SHARP SF-1014 Diagram

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SERVICE MANUAL

CODE: 00ZSF1014SM1E

Copier

MODEL SF-1014

CONTENTS

[ 1 ] GENERAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

[ 2 ] PRODUCT SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1

[ 3 ] EXTERNAL VIEW AND INTERNAL STRUCTURE . . . . . . . . . . . . . . . . . . . . . . . 3-1

[ 4 ] UNPACKING AND INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

[ 5 ] GENERAL DESCRIPTIONS OF EACH SECTION . . . . . . . . . . . . . . . . . . . . . . . 5-1

[ 6 ] DISASSEMBLY AND ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

[ 7 ] ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

[ 8 ] SIMULATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

[ 9 ] SELF DIAGNOSTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

[10] SERVICE AT MEMORY TROUBLE AND

[10] MAIN CONTROL PWB REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10- 1

[11] MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1

[12] ELECTRICAL SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-1

Parts marked with "!" is important for maintaining the safety of the set. Be sure to replace these parts with specified ones for maintaining the safety and performance of the set.

This document has been published to be used

SHARP CORPORATION

for after sales service only. The contents are subject to change without notice.

CONTENTS

[ 1 ] GENERAL DESCRIPTION . . . . . . . . . . . . . . . . . . . 1-1

1. Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

2. Target users . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

3. System outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

[ 2 ] PRODUCT SPECIFICATIONS . . . . . . . . . . . . . . . 2-1

1. Basic specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2. Details of each section . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

3. Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

[ 3 ] EXTERNAL VIEW AND INTERNAL

STRUCTURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

1. External view and internal structure . . . . . . . . . . . . . . . 3-1

2. Operation panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

3. Cross section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

4. Switches, sensors, detectors . . . . . . . . . . . . . . . . . . . . 3-4

5. Clutches, solenoids . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

6. Motors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

7. PWBs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

[ 4 ] UNPACKING AND INSTALLATION . . . . . . . . . 4-1

1. Packing drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

2. Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

(1) Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

(2) Space around the machine . . . . . . . . . . . . . . . . . . . 4-2

(3) Installing table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

(4) Power source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

(5) Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

3. Installation procedure . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

(1) Optical system unlocking . . . . . . . . . . . . . . . . . . . . . 4-3

(2) Cassette setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

(3) Developer setting . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

(4) Toner supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

(5) Toner density sensor level check . . . . . . . . . . . . . . 4-5

(6) Accessory attachment . . . . . . . . . . . . . . . . . . . . . . . 4-5

4. Locking procedure for transit or repacking . . . . . . . . . . 4-6

(1) No.2/No.3 mirror unit (Mirror base B) lock . . . . . . . 4-6

(2) No.4/no.5 mirror unit (Mirror base C) lock . . . . . . . 4-6

5. Optional multi bypass feeder unit Installation Manual . . 4-6

(1) Open the upper unit of the main copier unit. . . . . . . 4-6

(2) Release the lock for the manual bypass unit and

remove the manual bypass unit. . . . . . . . . . . . . . . . 4-6

(3) Mount the multi bypass feeder unit onto

the main copier unit. . . . . . . . . . . . . . . . . . . . . . . . . 4-7

[ 5 ] GENERAL DESCRIPTIONS OF

EACH SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

1. Paper feed section . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

2. Separation, transport section . . . . . . . . . . . . . . . . . . . . 5-2

3. Fuser, paper exit section . . . . . . . . . . . . . . . . . . . . . . . 5-2

4. Developer section . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

4-1. General descriptions . . . . . . . . . . . . . . . . . . . . . . . 5-2

(1) Two-component developer . . . . . . . . . . . . . . 5-2

(2) Two-component magnetic brush

development . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

(3) Developing bias . . . . . . . . . . . . . . . . . . . . . . 5-2

5. Optical system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

5-1. General descriptions . . . . . . . . . . . . . . . . . . . . . . . 5-3

(1) Original table . . . . . . . . . . . . . . . . . . . . . . . . 5-3

(2) Copy lamp . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

(3) Mirror . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

(4) Lens (Fixed focus lens) . . . . . . . . . . . . . . . . .5-3

(5) Lens home position sensor (LHPS) . . . . . . . .5-3

(6) Lens base . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-3

(7) Lens drive shaft . . . . . . . . . . . . . . . . . . . . . . .5-4

(8) Lens drive wire . . . . . . . . . . . . . . . . . . . . . . . .5-4

(9) No. 4/5 mirror base . . . . . . . . . . . . . . . . . . . .5-4

(10) Mirror motor . . . . . . . . . . . . . . . . . . . . . . . . . .5-4

(11) Mirror home position sensor (MHPS) . . . . . . .5-4

(12) No. 2/3 mirror base . . . . . . . . . . . . . . . . . . . .5-4

(13) Copy lamp unit . . . . . . . . . . . . . . . . . . . . . . .5-4

(14) Thermal fuse . . . . . . . . . . . . . . . . . . . . . . . . .5-4

(15) Reflector . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-4

(16) Exposure adjustment plates . . . . . . . . . . . . . .5-4

(17) Mirror base drive wire . . . . . . . . . . . . . . . . . . .5-4

(18) Lens drive motor . . . . . . . . . . . . . . . . . . . . . .5-4

(19) AE sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-4

5-2. Basic operations . . . . . . . . . . . . . . . . . . . . . . . . . . .5-4

6. Copy process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-6

(1) Photoconductor . . . . . . . . . . . . . . . . . . . . . . . . . . .5-6

(2) Process diagram . . . . . . . . . . . . . . . . . . . . . . . . . . .5-6

(3) Actual process . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-7

(4) Transit of photoconductor drum surface

potential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-11

(5) Process correction system . . . . . . . . . . . . . . . . . .5-12

1) Outline of the correction system . . . . . . . . . . .5-12

2) Correction operation . . . . . . . . . . . . . . . . . . . .5-12

[ 6 ] DISASSEMBLY AND ASSEMBLY . . . . . . . . . . . 6-1

1. Paper feed section, paper transport section,

power section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1

1-1. Paper feed unit . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1

1-2. Paper feed roller ass’y removal . . . . . . . . . . . . . .6-1

1-3. Separation roller . . . . . . . . . . . . . . . . . . . . . . . . .6-2

1-4. Takeup roller, paper feed roller . . . . . . . . . . . . . .6-2

1-5. Resist roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-3

1-6. Transport belt . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-4

1-7. Socket holder unit . . . . . . . . . . . . . . . . . . . . . . . . .6-4

1-8. Lower unit PWB . . . . . . . . . . . . . . . . . . . . . . . . . .6-4

1-9. Cassette paper empty detector (CPED1) . . . . . . .6-4

1-10. Power unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-4

2. Manual paper feed section . . . . . . . . . . . . . . . . . . . . . . .6-5

2-1. Manual paper feed roller, manual takeup roller . . .6-5

2-2. Reverse rotation roller ass’y . . . . . . . . . . . . . . . . . .6-5

3. Fuser section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-6

3-1. Fuser unit removal . . . . . . . . . . . . . . . . . . . . . . . . .6-6

3-2. Heater lamp replacement . . . . . . . . . . . . . . . . . . . .6-6

3-3. Upper heat roller ass’y removal . . . . . . . . . . . . . . .6-7

3-4. Upper separation pawl replacement . . . . . . . . . . . .6-7

3-5. Lower cleaning roller and

lower heat roller replacement . . . . . . . . . . . . . . . . .6-7

3-6. Scraper replacement . . . . . . . . . . . . . . . . . . . . . . .6-8

3-7. Thermistor/thermostat removal . . . . . . . . . . . . . . . .6-8

4. Optical system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-9

4-1. Copy lamp replacement . . . . . . . . . . . . . . . . . . . . .6-9

4-2. Copy lamp unit replacement . . . . . . . . . . . . . . . . . .6-9

4-3. Mirror base drive wire replacement . . . . . . . . . . . .6-9

4-4. Lens and lens drive wire replacement . . . . . . . . .6-10

4-5. No. 4/5 mirror unit and

peripheral parts replacement . . . . . . . . . . . . . . . .6-11

4-6. Optical unit removal . . . . . . . . . . . . . . . . . . . . . . 6-11

4-7. Other parts in the optical system . . . . . . . . . . . . . 6-11

4-8. Light adjustment plate/temperature fuse

removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-12

5. Drum section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-13

5-1. Drum unit removal . . . . . . . . . . . . . . . . . . . . . . . . 6-13

6. Developer section . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-13

6-1. Developer unit removal . . . . . . . . . . . . . . . . . . . . 6-13

6-2. Developer cartridge removal . . . . . . . . . . . . . . . 6-13

6-3. Toner motor removal . . . . . . . . . . . . . . . . . . . . . 6-13

6-4. Toner density sensor . . . . . . . . . . . . . . . . . . . . . 6-14

7. Operation panel section/medium cabinet . . . . . . . . . . 6-14

8. Major parts in the frame side . . . . . . . . . . . . . . . . . . . . 6-14

8-1. Ozone filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-14

8-2. Optical unit cooling fan removal . . . . . . . . . . . . . 6-14

8-3. Ventilation fan motor . . . . . . . . . . . . . . . . . . . . . 6-15

8-4. Transport roller clutch . . . . . . . . . . . . . . . . . . . . 6-15

8-5. Paper exit sensor . . . . . . . . . . . . . . . . . . . . . . . . 6-15

[ 7 ] ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

1. Developer section . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

(1) MG roller main pole position adjustment . . . . . . . . . 7-1

(2) Adjustment of clearance between DV doctor and

MG roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

2. Optical section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

A. Adjustments list . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

B. Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

C. Adjustment contents . . . . . . . . . . . . . . . . . . . . . . . . 7-6

(1) Lens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6

(2) Mirror . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7

(3) Image distortion adjustment . . . . . . . . . . . . . . . 7-8

(4) Copy image center position adjustment . . . . . 7-12

(5) Focus adjustment (R esoluti on adjust m ent) . . . 7-14

(6) Copy magnification ratio adjustment . . . . . . . . 7-15

(7) Uniformity adjustment . . . . . . . . . . . . . . . . . . . 7-18

(8) Image loss/void area adjustment . . . . . . . . . . . 7-18

3. COPY DENSITY ADJUSTMENT . . . . . . . . . . . . . . . . 7-23

(1) Copy density adjustment timing . . . . . . . . . . . . . 7-23

(2) Note for copy density adjustment . . . . . . . . . . . . 7-23

(3) Necessary items for the co py density adjustment 7-23

(4) Copy density adjustment mode . . . . . . . . . . . . . . 7-23

(5) Copy density adjustment procedure . . . . . . . . . . 7-23

A. Test chart (UK0G-0162FCZZ) setting . . . . . . 7-23

B. Normal copy mode (Non-toner-save mode)

copy density adjustment . . . . . . . . . . . . . . . . 7-23

C. Normal copy mode (Toner save mode)

copy density adjustment . . . . . . . . . . . . . . . . 7-24

D. Photo copy mode (Non-toner-save mode)

copy density adjustment . . . . . . . . . . . . . . . . 7-24

E. Auto copy mode (Non-toner-save mode)

copy density adjustment . . . . . . . . . . . . . . . . 7-24

F. Auto copy mode (Toner save mode) copy

density adjustment . . . . . . . . . . . . . . . . . . . . . 7-25

(6) Copy density adjustment table . . . . . . . . . . . . . . 7-26

4. Others . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-27

(1) Transfer charger wire installation . . . . . . . . . . . . 7-27

(2) How to adjust the separation corona valtage . . . 7-27

(3) How to adjust the developing bias voltage . . . . . 7-27

[ 8 ] SIMULATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

1. Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

2. Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

3. Operating procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

4. Purpose list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2

5. Details of simulations . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3

6. User simulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-12

[ 9 ] SELF DIAG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-1

1. Summary/purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-1

2. Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-1

3. Clearing the self diag display . . . . . . . . . . . . . . . . . . . . .9-1

4. Self diag contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-2

5. Conditions for the JAM display . . . . . . . . . . . . . . . . . . . .9-7

[10] SERVICING AT MEMORY TROUBLE AND

MAIN CONTROL PWB REPLACEMENT . . . .10-1

1. General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-1

2. Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-1

3. Remedies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-1

4. Set value recording sheet . . . . . . . . . . . . . . . . . . . . . . .10-4

5. Memory simulation list . . . . . . . . . . . . . . . . . . . . . . . . .10-5

[11] MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-1

[12] ELECTRICAL SECTION . . . . . . . . . . . . . . . . . . . .12-1

1. System block diagram . . . . . . . . . . . . . . . . . . . . . . . . . .12-1

2. System operation at power ON . . . . . . . . . . . . . . . . . . .12-1

3. Main circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-2

(1) Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-2

(2) CPU (IC110) M37702 . . . . . . . . . . . . . . . . . . . . . .12-2

1 Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-2

2 Pin arrangement . . . . . . . . . . . . . . . . . . . . . . .12-2

3 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . .12-3

4 CPU: M37702 (IC110) pin signals . . . . . . . . . .12-4

(3) Start/stop control circuit . . . . . . . . . . . . . . . . . . . .12-5

(4) Heater lamp control circuit . . . . . . . . . . . . . . . . . .12-6

1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-6

(5) Driver circuit (Solenoid, magnetic clutch) . . . . . . .12-7

1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-7

2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-7

(6) Stepping motor drive circuit . . . . . . . . . . . . . . . . .12-7

1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-7

(7) AE (Auto Exposure) sensor circuit . . . . . . . . . . . .12-7

(8) Toner supply motor drive circuit . . . . . . . . . . . . . .12-8

(9) Reset IC (IC113) . . . . . . . . . . . . . . . . . . . . . . . . . .12-8

1 Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-8

2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-8

(10) Copy lamp control section . . . . . . . . . . . . . . . . . .12-9

4. Operating section . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-11

(1) Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-11

(2) Display circuit . . . . . . . . . . . . . . . . . . . . . . . . . . .12-12

1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . .12-12

2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . .12-12

(3) LED display . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-13

5. Power section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-13

(1) Signal name and output voltage . . . . . . . . . . . . .12-13

[1] GENERAL DESCRIPTION

1. Features

[Small]

• Compact design

• Small area for operation

[Speedy]

• Warm-u p time 30 se c or less, the fi rst co py 5.9 sec ∼ the fastest in

the class.

[Soft]

• The energy save mode reduces the total power consumption.

• Ozone generation is limited.

• Use of materials which can be recycled.

User simulation

The user can select the desired operating conditions easily. Auto clear time, power save mode time, power save mode warm up time can be set by the user simulation.

2. Target users

Average copy volume of 2,000 ∼ 3,000 sheets/mon th (max. 15,000 sheets/month)

3. System outli ne

Zooming range (64 ~ 129%)

Single manual feed (Standard)

250-sheet tray

50-sheet multi manual feed unit (SF-MF14) (Option)

1 – 1

[2] PRODUCT SPECIFICATIONS

1. Basic specifica tio ns

(1) Type: Table top (2) Copy speed

Paper size Normal Enlargement Reduction

B4 11 sheets/min 10 sheets/min 12 sheets/min A4 (Landscape) 14 sheets/min 10 sheets/min 12 sheets/min B5 (Landscape) 14 sheets/min 10 sheets/min 12 sheets/min

10″ × 14″ 11 sheets/min 10 sheets/min 12 sheets/min

Legal 11 sheets/min 10 sheets/min 12 sheets/min

Letter

(Landscape)

Note: Copy speeds in the enlargement/reduction copy are the

same in all the rates.

(3) Warm-up time

Normal 30 sec or less (20 °C, 65%RH, rated

(Preheat YES/NO) 10sec or less (Preheat mode)

Jam recovery time 8sec (Conditions: Standard condition

(4) First copy time

First copy time from each paper feed port

(5) Jam recovery time: 5 sec (Condition: Jam in a section except

(6) Multi copy

Max. quantity of multi copy 99 sheets

(7) Original

Max. original size B4/10″ × 14″ Original reference

position Detection NO Detection size AB series

14 sheets/min 10 sheets/min 12 sheets/min

voltage)

Max. 30sec (auto power shut off mode)

after 60sec of leaving after opening the door.)

Tray: 5.9sec Manual: 5.9sec

for the fuser section, within 6.0 sec from door open, standard condition.)

Left side, about 12mm from the rear

Inch series

(10) Void width

Normal Reduction Enlargement

Lead edge

3.0mm or less

Void area

Image

loss

(11) Paper exit

Paper exit tray capacity 100 sheets

(12) External view

W × D × H (mm) OC top 500 × 492 × 288 Occupying area W (mm) 500 + 257 (paper exit tray) +

Weight About 27.4 kg

(13) Power source

Voltage 100V, 110V, 120V, 127V, 220V, 220 ∼ 230V,

Frequency 50/60Hz common

(14) Power consumption

Max. power consumption 1.4 kW Average power consumption when operating

(Ref. value) Power consumption in standby (Ref. value) 72.5 Wh Power consumption in pre-heating (Ref. value) 47.7 Wh Power consumption in auto power shut off

(Ref. value) Auto OFF mode (Ref. value)

Dry heater connected Dry heater not connected

Energy consumption efficiency 49.4 Wh

Note: Max. value when an option is installed.

Side (front)

3.0mm or less Rear edge

1mm ∼ 3.0mm

Lead edge

3.0mm max. Side (front)

3.0mm max.

Rear edge

4.0mm max.

D (mm) 492

230 ∼ 240V, 240V

Lead edge

3.0mm or less Side (front)

3.0mm or less

Rear edge

1mm ∼ 3.0mm

Lead edge

5.0mm max. Side (front)

5.0mm max.

Rear edge

6.0mm max.

205 (option Multi paper feed unit)

Lead edge

3.0mm or less Side (front)

3.0mm or less

Rear edge

1mm ∼ 3.0mm

Lead edge

2.5mm max. Side (front)

2.5mm max.

Rear edge

3.0mm max.

582.4 Wh

14.8 Wh

9.5 Wh 0 Wh

(8) Copy magnification ratio

Fixed ratio

(9) Exposure

AB series 3R+3E/129, 122, 115, 81, 70, 64%

Inch series 2R+2E/129, 117, 78, 64%

Zoom width 64 ∼ 129%

Exposure mode Auto/Manual/Photo

Manual steps 9 steps

2. Details of each section

(1) Paper feed

Copying size (Max. ∼ Min.)

Paper feed system 1 tray + single manual feed Paper feed capacity 250 sheets × 1

2 – 1

AB series B4 ∼ A6 (Postcard) Inch series 10 × 14 ∼ 5 1/2 × 8 1/2

• AB series

Each paper

feed port

Tray B4 ∼ A5

Single manual feed

Paper feed

size

(Landscape) B4 ∼ A6

postcard (Portrait)

*For paper of 104 ∼

130g/m2, A4 or smaller.

Multi manual feed (OP)

• When in

multi paper feed

• When in

single paper feed

B4 ∼ A5 (Landscape)

B4 ∼ A6 52 ∼

*For paper of 104 ∼

130g/m2, A4 or smaller.

• Inch series

Each paper

feed port

Tray 10 × 14 ∼

Single manual feed

Paper feed

size

5 1/2 × 8 1/2

10 × 14 ∼ 5 1/2 × 8 1/2

*For paper of 28 ∼

34.5lbs, letter size or smaller.

Multi manual feed (OP)

• When in

multi paper feed

• When in

single paper feed

10 × 14 ∼ 5 1/2 × 8 1/2

*For paper of 28 ∼

34.5lbs, letter size or smaller.

Paper

weight

56 ∼ 80g/m

52 ∼ 130g/m

56 ∼ 80g/m

130g/m

Paper

weight

15 ∼ 21 lbs. Recommended

14 ∼ 34.5 lbs.

15 ∼ 21 lbs. Recommended

14 ∼ 34.5 lbs.

Special paper

Recommended recycle paper

No. 2 original, OPH, label, recommended recycle paper, postcards

Recommended recycle paper

Recommended recycle paper, No. 2 original, OPH label

Special paper

recycle paper

No. 2 original, OHP. recommended recycle paper

recycle paper

No. 2 original, OHP, label, recommended recycle paper

Paper

feed

position

Front

Side

Paper

feed

position

Front

Side

(2) Optical section

Light source Halogen lamp Exposure system Slit exposure by moving the

light source

Magnification ratio changing system

Lens Fixed focus lens

(3) Process section

Charging system (–) DC scorotron system Transfer system (–) DC scorotron system Separation

system

Copy mode

Main charger grid voltage

Charge/Transfer charger applied voltage

(4) Developer section

Developing system Two-component developing

Toner density detection system

Toner box capacity Toner 210 ±5g Developing bias DC–200V±3V

Standard 8-02 –750V

Photo 8-03 –460V

Toner save 8-04 –634V

By changing the lens position and scan speed.

Discharge plate/separation pawl

Simulations

No.

–50.0µA ± 4µA

system Magnetic sensor system

• Developer

Material Iron powder carrier Charging system Negatively charged by friction

• Toner

Charging system Positively charged by friction

(5) Fuser section

Fusing system Heat roller system

Upper heat roller surface temperature

Heater lamp 100V Halogen lamp 1000 W × 1 pc.

110V Halogen lamp 1000 W × 1 pc. 120V Halogen lamp 1000 W × 1 pc. 127V Halogen lamp 1000 W × 1 pc. 220V Halogen lamp 1000 W × 1 pc. 230V Halogen lamp 1000 W × 1 pc. 240V Halogen lamp 1000 W × 1 pc.

180°C

Grid

voltage

(6) Drive section

2 – 2

Main motor

standard

3-phase full wave drive, DC brushless

Rating: DC32V, max. 1.32A, 1500 rpm

3. Supplies

Middle and South America

No. Name Content Product name Life

1 OPC drum kit

2 Black developer

3 Black toner

4 Heat roller kit

Note 1: The heat roller kit for this series is common with the previous

models SF-2314/2414/2514.

OPC drum x 1 Cleaning blade x 1

SF114DR 50K

Black developer (560g) x 10 SF114LD

(SF114DVx10)

Black toner cartridge (200g) x 10 SF114LT

(SF114Tx10) Upper heat roller x 1 Upper fusing separation pawl x 3 Fusing bearing (F) x 1 Fusing bearing (R) x 1

SF214HR

(For LAG: SF214HR1)

Roller stopper x 2 Lower heat roller x 1 Lower fusing separation pawl x 4

60K × 10

6K × 10

80K

Environmental conditions Observe the following environmental conditions to ensure the copy

quality and machine performance. 1 Standard condition

20 ∼ 25 °C, 65 ±5% RH

2 Operational condition

(%)RH

85 60

10 30 35

(˚C)

3 Shipping condition of copier (within 2 weeks)

(%)RH

4 Supply storing condition

(%)RH

-5

Storage peri od: OPC drum Max. 36 mont hs fr om product i on Developer /T oner Max. 24 mon ths fr om pro duct ion

(˚C)

5 Identification of production number A. OPC drum The lot no. is of 10 digits. Each digit indicates as follows. This number

is printed on the F side flange.

1 2 3

7 8

-20 30 45

(˚C)

1 Numeral

Indicates the OPC drum sensitivity.

2 Alphabet

Indicates the model code. "M" is the code for this model.

3 Numeral

The end digit of the year of coating.

4 Numeral or X, Y, Z

Indicates the month of coating. X means October, Y November, and Z December.

56 Numeral

Indicates the day of coating.

7 Numeral or X, Y, Z

Indicates the month of packing. X means October, Y November, and Z December.

89 Numeral

Indicates the day of packing.

2 – 3

F Alphabet

Indicates the factory of production. "A" is the code for Nara plant. B. Developer and toner The lot number of toner is put on the individual cartridge package and

on the group package, and that of toner is put on the bag and the group package. The lot number is of 7 digits, each digit indicating as follows:

2 3

4 5 6

1 Alphabet

Indicates the factory of production. 2 Numeral

Indicates the end digit of the year of production. 34 Numeral

Indicates the month of production. 56 Numeral

Indicates the day of production. 7 Numeral

Indicates the sub lot number.

Normal C A B

1234

When a change is made on the product in the same operation system:

Normal C A B

15263748

A,B,C: Operation system

2 – 4

[3] EXTERNAL VIEW AND INTERNAL STRUCTURE

1. External view and intern al str uctu r e

1 2

Upper un i t

Lower unit

No. Name No. Name No. Name

Exit tray

Operation panel

Power switch

Fusing unit lever

Photoconductive drum

Document cover

Manual bypass

Front cover

Toner cartridge

Release lever

13 14

Document glass

Manual bypass guide

Paper tray

Fusing unit

3 – 1

2. Operation panel

SF-1014

AUTO

2 3 5 6 7 8 9 10 11 12 13 14

1/2x11

1/2x81/2

129%

1/2x11 10x14

117%

100%

1/2x14

78%

1/2x1151/2x 1/2

64%

51234

1/2x11

ZOOM

No. Name No. Name No Name

Auto/manual/photo key and indicators

Developer replacement required

indicator Copy ratio selector key and indicators

Copy quantity display

Clear key

Zero/readout key

Light and dark keys and exposure

indicators Misfeed indicator

Zoom keys

Copy ratio display key

Power save indicator

Print button and READY indicator

Maintenance required indicator

Toner required indicator

ZOOM indicator

10-key pad

Tray select key and indicators

1716

3 – 2

3. Cross section

51098

11 12

15 16

17 18

19 20

21 22

No. Name No. Name No Name

No.3 mirror

Cleaner unit

No.1 mirror

No.6 mirror

No.4 mirror

Manual paper feed roller

Tray paper feed takeup roller

Tray paper feed roller

Resist roller

Suction belt

Lower heat roller

[

Heater lamp

No.2 mirror

Discharge lamp

Copy lamp

Blank lamp

No.5 mirror

Manual feed take-up roller

Tray transport follower roller

Option tray transport roller

Transfer charger

Upper heat roller

Lower separation pawl

2829

2627

Drum separation pawl

Main charger unit

Lens unit

Developer magnet roller

Developer tank

Manual paper feed follower roller

Transport roller (Upper)

Resist roller

Photoconductor drum

Lower cleaning roller

Upper separation pawl

]

3 – 3

4. Switches, sensors, detectors

7 6

No. Abbreviation Function Type Operation

POD Paper out sensor Transmission photo sensor H when paper is sensed.

MHPS Mirror home position sensor Transmission photo sensor H at the home position.

LHPD Lens home position sensor Transmission photo sensor H at the home position.

PWD Paper size (large/small) sensor Transmission photo sensor L with the large size.

PPD Paper transport sensor Transmission photo sensor L when paper is sensed.

CPED1 Tray paper empty sensor Transmission photo sensor H when paper is present.

PID (MFD1)

Paper sensor for Manual paper feed unit (only single Manual Paper feed unit)

Transmission photo sensor L when the cover is open.

3 – 4

5. Clutches, sol eno id s

No. Abbreviation Name Function and operation

PSPS Paper separation solenoid For paper separation solenoid drive

RRC Resist roller clutch For resist roller rotation

TRC Transport roller clutch For transport roller rotation

MPFS Manual paper feed solenoid For takeup roller pressing

CPFC1 Tray paper feed clutch For paper feed roller rotation

MPFC Multi paper feed clutch For multi paper feed roller rotation

3 – 5

6. Motors

No. Abbreviation Name Function Type

VFM Paper exit fan motor

CFM Cooling fan motor For cooling the optical system DC brushless

MM Main motor For the main body drive and the option drive DC brushless

LM Lens motor For the optical lens drive DC stepping

MRM Mirror motor For the optical mirror base drive DC brushless

TM Toner motor For toner supply DC synchronous

For ventilation of the fuser unit. For cooling the machine and removing ozone.

DC brushless

3 – 6

7. PWBs

2 1

No. Name Description

AC circuit PWB AC power input

Discharge lamp PWB Discharge lamp drive

Main PWB Main body control

AE PWB Document density auto exposure detection

Blank lamp PWB Blank lamp control

Lower unit PWB Lower unit parts control

High voltage PWB Supply of the process high voltage and the developer bias voltage.

Operation PWB Operation input, display control

3 – 7

[4] UNP ACKING AND INSTALLAT ION

1. Packing drawi ng

List of packing materials and accessories

Name Q’ty 1 Packing case 1 2 Body 1 3 Polyethylene bag for paper exit tray 1 4 Vinyl sheet for body 1 5 Bottom case 1 6 Bottom case pad (L) 1 7 Bottom case pad (R) 1 8 AC cord sleeve 1 9 Paper exit tray 1

10 Instruction Manual 1

2. Installat ion

Installation conditions

The following installing conditions must be satisfied to assure the normal operations of the machine.

(1) Environment

1 Keep the machine away from direct sunlight and avoid instal-

lation near a window or in a bright place.

(Draw the curtain and close the blind shutter completely.) The plastic parts and the original cover may be deformed by direct sunlight. Avoid installation near a window even with frosted glass.

2 Avoid installation in high temperature or high humitity en-

vironments. Also, avoid installation where temperature or humidity may change quickly. (e.g., near an air conditioner).

Otherwise copy papers may be dampened and condensation may be generated in the machine. This may result in paper jams or poor copy quality.

(Ideal conditions): The best suitable conditions for machine

operation: 20°C ∼ 25°C: 65 ±5%RH

(Temperature/humidity range): 15°C ∼ 30°C (59°F ∼ 86°F),

20% ∼ 85% 65% for 35°C (95°F)

% RH

Humidity

˚C

15 30 35

(59˚ ) (86˚ ) (95˚)

(˚F)

4 – 1

3 Avoid installation where there is a lot of dust or vibrations.

If dust enters the machine, it may degrade copy quality and cause malfunctions.

4 Avoid installation on an unstable surface.

To assure the proper operations, install on a level surface.

5 Install in a well ventilated place.

(2) Space around the machine

Allow a space of about 15 cm (6 inches) between the rear side of the machine and the wall for ventilation of the cooling fan. Also allow sufficient space around the machine for operations.

(3) Installing table

Use a level (UKOGM0054CSZZ) to install the machine horizontally.

(Allowable tilt: 5 mm between the front and rear frames) (Note) If the machine is not installed horizontally, toner density con-

trol may not function properly. This may result in poor copy quality.

(4) Power source

1 The power source should be the rated voltage ±10% with the

capacity corresponding to the max. power consumption.

2 Do not use an extension cord, or operate any other equipment

from the same wall outlet.

6 Avoid installation where there is inflammable gases or am-

monium gases.

Installation near a diazonium copier may degrade copy quality and cause malfunctions.

7 Install near a power outlet.

(5) Grounding

To avoid electrical hazard, use the properly grounded wall outlet only.

(Carrying the machine)

When carrying the machine, remove the copy tray and hold the dent portions on the bottom.

4 – 2

3. Installation procedure

(1) Optical system unlocking

1 Unlock the No.2/No.3 mirror unit.

Remove the No.2/No.3 mirror unit fixing screw (1 pc.) on the left side of the copier.

(2) Cassette setting

1 Pull out the cassette.

Lift the cassette and slowly pull it out from the copier until it stops.

Mirror unit fixing screw

2 Unlock the No.4/No.5 mirror unit.

Remove the No.4/No.5 mirror unit fixing screws (2 pcs.) on the right side of the copier.

Mirror unit fixing screw

[In the case of SF-1014 with SF-MF14 (Optional) equipped.]

Open the paper feed tray on the right side of the copier.

2 Loading copy paper.

Set the copy papers in the cassette. Do not exceed the limit line indicator.

Gently insert the cassette fully into the copier.

Remove the No.4/No.5 mirror unit fixing screws (2 pcs.). Then close the paper feed tray.

Mirror unit fixing screw

4 – 3

(3) Developer setting

1 Open the front cabinet.

Push the front cabinet open buttons which are on the left and right sides of the copier, and open the front cabinet.

5 Remove the developer tank.

Slightly open the pawl which is fixing the developing unit and the developer tank with a screw driver, and pull out the developer tank.

Front cabinet open button

2 Open the toner cartridge.

While pressing the toner cartridge release lever (B), open the toner cartridge.

Release lever (B)

Toner cartridge

Developing unit

Developing tank

Pawl

6 Supply developer.

Supply a bag of developer to the developer supply port of the developing unit. At that time, move the bag of developer to supply developer evenly.

Developing

Developing unit

3 Remove the toner cartridge.

Slowly turn the toner cartridge clockwise to remove.

4 Remove the developing unit.

Loosen the fixing screw (step screw) which is fixing the copier and the developing unit, and slowly pullout the developing unit and Lenz hold Plate from the copier.

Fixing screw (step screw)

Lenz hold plate

7 Install the developer tank.

Insert the developer tank to the developing unit along the guide of the developing unit. At that time, check that the developer tank is securely fixed in the developing unit.

Developing unit

Developing tank

8 Install the developing unit.

Slowly insert the developing unit into the copier along the guide of the copier until it stops. Tighten the fixing screw which was removed in procedure (D), and fix the developing unit to the copier.

Fixing screw (step screw)

Developer unit

4 – 4

(4) Toner supply

1 Shake the toner cartridge up and down.

Shake the toner cartridge up and down 9 to 10 times.

2 Install the toner cartridge.

Install the toner cartridge to the copier along the guide of the copier. Turn the toner cartridge counterclockwise to lock.

(5) Toner density sensor level check

1 Turn on the power switch of the copier.

2 Adjust the developer level.

(a) Perform the key operations of simulation 25 sub 2.

C0 0 C

25 2

3 Supply toner.

Remove the sheet from the toner cartridge and supply toner. Slowly return the toner cartridge to the original position.

4 Close the front cabinet.

With the above key operations, simulation 25 is performed and the developer is stirred for 3 minutes.

(b) After stirring the developer for 3 minutes, the toner density

level is read by the main PWB. During stirring, the toner density sensor level is displayed on the MULTI COPY display. (Range: 1 ∼ 99) [Note] If the simulation is cancelled during execution, the

automatic reading cannot be performed. Do not cancel the simulation during execution.

c c c

(6) Accessory attachment

Attach the copy tray.

4 – 5

4. Locking procedure for transit or repacking

In general, reverse the procedures in "3. Installation procedure." For the optical system lock, perform the following procedure.

(1) No.2/No.3 mirror unit (Mirror base B) lock

1 Perform locking with the unit at its home position (normal copy

position) with the power ON and with the mirror stopped and with the external covers installed.

2 Lock the unit with the mirror unit fixing screw. (The hole in the left

cabinet)

Mirror unit fixing screw

(2) No.4/no.5 mirror unit (Mirror base C) lock

1 Turn off the power at the 64% position. Perform locking with the

external fitting installed.

2 Open the paper feed tray at the right side of the body, and fix the

unit with two fixing screws. (Two holes in the right cabinet)

Mirror unit fixing screw

2 Open the paper feed tray at the right side of the body, and fix the

unit with two fixing screws. (Two holes in the right cabinet)

5. Optional multi bypass feeder unit Installation Manual

(1) Open the upper unit of the main copier unit.

1 Press the release buttons on the left and right sides of the main

copier unit’s front cover, then open the front cover.

2 Push the upper half release lever (green) to the right and down,

then gently open the upper unit.

(2) Release the lock for the manual bypass unit and

remove the manual bypass unit.

1 Release the manual bypass unit by pressing upward on the rock

claws (green; 2 locations) which lock it in place in the main copier unit’s upper unit. The manual bypass unit will come out toward you slighly.

2 Pull out upon the manual bypass unit to remove it from the main

copier unit.

Mirror unit fixing screw

[SF-1014 with SF-MF14 (Optional) equipped.]

1 Turn off the power at the 64% position. Perform locking with the

external fitting installed.

Rock claw (latch)

Manual bypass unit

Rock claw (latch)

4 – 6

(3) Mount the multi bypass feeder unit onto the

main copier unit.

1 Slide the positioning pins which project from the multi bypass

feeder unit in to the grooves in the main copier unit, then push the multi bypass feeder unit into place to in stall it. At this time, to be sure that the multi bypass feeder unit is securely installed, push down once more on the fourcorners of the unit. (If it has not been securely installed, "CH" may appear in the COPIES MADE display when the power is turned on.)

Multi bypass feeder unit

Rock claw (latch)

Rock claw

(latch)

2 Close the upper unit of the main copier unit.

Positioning pins

Multi bypass feeder unit

4 – 7

[5] GENERAL DESCRIPTIONS OF

EACH SECTION

The general descriptions of the following sections are given:

1 Paper feed section 2 Separation, transport section 3 Fuser, paper exit section 4 Developer section 5 Optical system 6 Image forming section

Internal structure

When the CPCF turns off, rotation is stopped, and the takeup roller is pushed up by the roller release arm spring to the position.

(Manual paper feed operation) Multi When the solenoid B (MPFS) turns on, the takeup roller falls and the gate rises. Almost simultaneously the solenoid A (MPFC) turns on and the takeup roller and the paper feed roller turns to perform the paper feed operation.

1. Paper feed secti on

The paper feed system is in two ways: the tray feed and the manual feed. The cassette is of the universal type and has the capacity of 250 sheets. It is attached and detached at the front cabinet, that is, the front loading system. The manual paper feed is single for the this model. (The multi paper feed unit (SF-MF14) is an option.)

(Tray paper feed operation) The cassette paper feed clutch (CPFC) turns on, the paper feed roller shaft, the paper feed roller, and the takeup roller rotate. At the same time, the roller release arm is lowered by the limiter spring. As a result, the takeup roller falls by its own weight to reach the paper surface, performing the paper feed operation.

When the PPD turns on, the MPFS turns off and the RRC turns on. Almost simultaneously the MPFC turns off to return the roller and the gate to the initial state.

OFF

5 – 1

2. Separation, transport section

4. Developer section

After passing the resist roller section, the paper is transported to the transfer section. After transfer, the paper is separated from the drum by the separation electrode and the drum separation pawl, then transported to the fuser section by the transport belt.

3. Fuser, paper exit section

The toner image transferred on the paper is fused by the heat and pressure of the upper and the lower heat rollers. After fusing, discharge static electricity on the paper with the discharge brush. Then the paper is discharged to the copy tray.

4-1. General descriptions

(1) Two-component developer

The developer is composed of toner and carrier. Carrier serves as a medium for attaching toner onto the electrostatic image on the photoconductor drum. By stirring toner and carrier, they are rubbed to be charged positive (+) and negative (–) respectively. Since developer will deteriorate to degrade copy quality, it should be replaced regularly.

(2) Two-component magnetic brush development

The rotatable non-magnetic sleeve is provided over the magnet roller and is rotated. Carrier forms a magnetic brush on the sleeve surface by magnetic force to attach toner onto the electrostatic image on the photoconductor drum.

(3) Developing bias

When the photoconductor is charged and exposed to light (exposure), the surface potential (voltage) of the photoconductor will not be lost completely. (The residual potential remains.) Toner is attracted to the photoconductor by this residual potential, dirtying the photoconductor. As a result, a dirty copy of white background is generated. To prevent against this, a voltage of the same polarity and higher than the residual potential is applied to the MG roller, preventing toner from being attached to the photoconductor surface.

• Temperature control

Heat roller surface temperature detection

The heat roller is heated by the heater lamp. (When the heat roller surface temperature is 180 C˚ or lower, the heater lamp is actuated)

Contact open (*)

Abnormal high tem p erature

CPU

(Heater troub l e) Self diag di spl ay

Thermistor

Heat r olle r

Heater lamp

Thermostat

• Abnormally high temperature (H3)

• Abnormally low temperature (H4)

• Thermistor disconnection (H2)

When the thermostat contact is open, it is required to press the

reset button in the upper side of the thermostat. (The contact is not reset automatically.)

Toner Carrier

Residual potential < DV BIAS

MG roller

DV BIAS

-200V

Developing bias voltage

5 – 2

5. Optical system

5-1. General descriptions

• The optical system is composed of the fixed focus lens and six

mirrors. Since the fixed focus lens is employed, No.4/No. 5 mirror base is moved as well as the lens to change the distance between the document and the drum (OID, Original Image Distance) for reduction and enlargement. To move the lens and No.4/No. 5 mirror unit, he stepping motor is driven by the signal from the main control PWB to allow zooming of 0.70 to 1.22 (inch series: 0.64 ∼ 1.29) with 1% increment. (The SF-2314 has no zooming function, and its lens and No.4/No.5 mirror base are fixed.)

• Exposure is adjusted by changing the voltage of the copy lamp.

The copy lamp unit is provided with the AE sensor for detection of the original density to adjust the light quantity of the copy lamp according to the original density.

• For exposure, the slit exposure system is employed where the light

source is moved. (The original table is fixed.)

615

127

1311316

8 14

1 Copy lamp 2 Reflector 3 No. 1 mirror 4 No. 2 mirror 5 No. 3 mirror 6 Lens 7 No. 4 mirror 8 No. 5 mirror 9 No. 6 mirror F No. 2/No. 3 mirror base unit G Copy lamp unit H No. 4/No. 5 mirror base unit I Mirror motor J Lens/No. 4/No.5 mirror base drive motor K Lens home position sensor L Mirror home position sensor M Auto exposure sensor

(1) Original table

The original table is fixed, and originals are set to the left frame side as the reference.

(2) Copy lamp

100V s ystem (285W) 200V s ystem (285W)

(3) Mirror

Six mirrors are used. No. 1 mirror is provided in the copy lamp, No. 2/3 mirrors at the No.2/3 mirror base, No. 4/5 mirrors at the No. 4/5 mirror base. The No.2/3 mirror base is scanned during copying. The No.4/5 mirror base is moved to change the distance between the original and the photoconductor during zoom copying.

(4) Lens (Fixed focus lens)

• Construction (One group 3 lenses)

• Brightness (F8)

• Focus (175mm)

(5) Lens home position sensor (LHPS)

This sensor is used to sense the lens position. The sensor output signal serves as the basic signal to control the copy magnification ratio.

(6) Lens base

The lens is mounted to this lens base. It is moved in the paper feed direction in reduction copying, and in the paper exit direction in enlargement copying.

5 – 3

(7) Lens drive shaft

This shaft is to control the optical axis of the lens in zoom copying. The lens follows on the slide base shaft.

(8) Lens drive wire

The wire is used to drive the lens base and the 4/5 mirror base.

(9) No. 4/5 mirror base

The No. 4/5 mirror is installed to this base. It is moved in zoom copying in order to fit the distance between the original and the photoconductor.

(10) Mirror motor

The mirror motor is a stepping motor, and used to move the copy lamp unit and the No. 2/3 mirror base in order to obtain the rpm corresponding to each magnification ratio.

(11) Mirror home position sensor (MHPS)

Used to sense the home position of the copy lamp unit. This sensor is a photo transmission type sensor.

(12) No. 2/3 mirror base

The No. 2/3 mirrors are attached to this base. The mirror base is scanned by the mirror motor.

(13) Copy lamp unit

This is composed of No. 1 mirror, the thermal fuse, the copy lamp, the exposure adjustment plate, and the reflector, and is scanned by the mirror motor.

5-2. Basic operati on s

(Relationship among the original, the lens and the image in each magnification ratio)

Normal copy: The distance between the surface of original on the

table glass and the lens is made equal to the distance between the lens and the exposure surface of the photoconductor to make the original and the image equal to each other.

Enlargement copy: The lens is nearer to the original when compared

with the normal copy to shorten the distance between the original surface and the lens. The No. 4/5 mirror base is positioned further away from the lens to increase the distance between the lens and the exposure surface of the photoconductor. The distance between the original and the exposure surface of the photoconductor is greater than that in the normal copy.

(14) Thermal fuse

The thermal fuse is closely attached to the reflector in order to prevent against abnormal temperature rise in the optical system. In case of abnormal temperature rise, the power for the copy lamp is turned off.

100V system 200V system

(117°C) (117°C)

(15) Reflector

Light from the copy lamp is reflected onto the original.

(16) Exposure adjustment plates

Four exposure adjustment plates are attached to the copy lamp unit to adjust the exposure balance in the front and the rear frame direction.

(17) Mirror base drive wire

This wire is used to transmit the drive power of the mirror motor to the copy lamp unit and the No. 2/3 mirror base to scan the mirror base.

(18) Lens drive motor

This is a stepping motor, which is used to move the lens and the No. 4/5 mirror base.

(19) AE sensor

The original density is detected with the intensity of the copy lamp light reflected from the original. The measurement area is the mirror base scan area of about 100mm at the center. The element is a photo diode.

Reduction copy: When compared with the normal copy, the lens

comes closer to the photoconductor to increase the distance between the original and the lens. The distance between the lens and the exposure surface of the photoconductor is decreased. The No. 4/5 mirror base is positioned further away from the lens. The distance between the original and the exposure surface of the photoconductor is longer than that in the normal copy.

5 – 4

The mirror base scan speed (mirror motor rpm) is changed t o z oom.

The lens and the mirror are

Copy paper

feed direction

The mirr or sc an speed is c hanged to zoom .

Mirror scan speed Drum rotating speed < Mirror scan speed

Enlargement

moved to zoom.

(Optical system dirt correction)

The SF-1014 perform dirt correction by changing the copy lamp intensity according to the dirt degree in the optical system (the copy lamp unit, No. 1 mirror, No.2 mirror, No.3 mirror) to prevent against remarkable degrading of copy quality. The reference value is the AE sensor output value which is obtained when the reference plate is exposed with the copy lamp voltage of

67.7V (135.4V) at power ON.

This value is checked with sim 44-02.

Reference plate (Glass holder)

Table glass

Copy lamp light quantity "UP"

Original

(Copy lamp control in each copy density)

CLV (Copy lamp application voltage)

60 50 40

(V)

Reduction

[MAX. 85V(170V)]

[MIN. 40V(80V)]

The lens and the mirror are move to zoom.

Automatic exposure sensor

CPU

Reference value

> Measured value

Correction data output

EX1

234

EX5

5 – 5

6. Copy process

(1) Photoconductor

• This model uses OPC (organic photoconductor) as photoconduc-

tive material.

OPC layer CTL (Electric charge moving layer)

CGL (Electric charge generating layer) Aluminum layer

(2) Process diagram

Original

Copy lampMirror lens

High voltage unit

Exposure

Transfer

Exposure

Development

Drum up per

ima ge/paper

synchronization

Resist roller

Discharge lamp

Cleaning bl ade

Waste toner collection

Paper exit

Main corona unit

Separ a tion

Fusing

Charging

Discharging

Cleaning

Separation

Blank lamp

Toner

Developer

High voltage unit

Paper feed roller Transportroller

Manual paper feed Pape r ca sse tte

Discharge lamp

Cleaning bl ade

Seper ati on pa w l

Heat r olle r

Heater lamp

Separation cor ona unit

High voltage unit

Main corona unit

Seperation corona unit

Transfer charger

High voltage unit

Blank lamp

Devel oper u nit MG roller

Resist roller

Transfer corona unit

Image forming process

Paper transport path

5 – 6

(3) Actual process

Step 1 (charging)

The OPC drum is negatively charged by corona discharge of the transfer charger . Positive charges are generated in the aluminum layer.

Aluminum layer

OPC drum

CGL

CTL

Seperation pawl

Transfer corona unit

High voltage unit

Step 2 (Discharging)

When the OPC drum is exposed to the discharge lamp light, positive and negative charges are generated in the OPC drum CGL. The negative charges move to the positive charges generated in the aluminum layer in step 1, and the positive charges move to the negative charges on the OPC drum surface charged in step 1. The positive charges and the negative charges are neutralized each other in the aluminum layer and on the OPC drum surface. As a result, the OPC dru m surface potential becomes 20V ∼ 30V.

Discharge lamp

Cleaning blade

Main corona unit

Seperation corona unit

Blank lamp

Devel oper u nit MG roller

Resist roller

Transfer corona unit

Discharge lamp

Light

OPC drum

CTL

CGL

Aluminum layer

By performing step 1 (Charging) and step 2 (Discharging), the photoconductor itself is initialized to stabilize the drum surface potential.

Discharge lamp

Cleaning blade

Seper ati on pa w l

Main corona unit

Seperation corona unit

Blank lamp

Devel oper u nit MG roller

Resist roller

Transfer corona unit

5 – 7

Step 3 (Main Charging)

By negative discharging of the main charger, uniform negative charges are applied to the OPC drum surface. The OPC drum surface potential is controlled by the screen grid voltage to maintain the grid voltage at a constant level.

• When the drum surface potential is lower than the grid voltage,

electric charges generated by discharging of the charger go through the screen grid to charge the drum surface potential until it becomes equal to the grid voltage.

• When the drum surface potential virtually reaches the grid potential

level, electric charges generated by discharging of the charger flows through the electrode of the screen grid to the high voltage unit grid voltage output circuit, thus always maintaining the drum surface potential at a level virtually equal to the grid voltage.

• The main corona unit employs the scorotron system to charge the

photoconductor surface to a certain level uniformly. In addition, the conventional corona wire is replaced with the corona charging mechanism by saw-teeth plate (stainless steel plate of 0.1 mm thick). In corona discharge, oxygen molecules in the air are ionized to generate ozone (O3). The mechanism restrict the generation of ozone.

Main corona unit

Blank lamp

High voltage unit

Screen grid

CTL

CGL

OPC drum

Aluminum layer

Step 4 (Exposure)

Light from the copy lamp is radiated on the document, and the optical image of the document is reflected by the mirrors and projected through the lens to the OPC drum. The lighter portion of the document reflects more light (high intensity) to the OPC drum, and the darker portion of the document reflect less light (low intensity) to the OPC drum. Positive or negative charges are generated in the CGL of the OPC drum where lights are radiated. Negative charges generated in the CGL move towards the positive charges in the aluminum layer generated in step 3. While the positive charges in the CGL move towards the negative charges on the CPU drum surface generated in step 3. Therefore, positive charges and negative charges are neutralized in the aluminum layer and the OPC drum surface at the light radiating position, decreasing the OPC drum surface potential. The CGL electric charge generating amount increases in proportion to the document density, that is, reflected light intensity (the OPC drum surface intensity). Therefore, electric charges are generated less in the CGL layer corresponding to the lighter density of document (higher intensity of the OPC drum surface), and a greater quantity of the negative charges on the OPC drum surface is neutralized, decreasing the OPC drum surface potential more.

Discharge lamp

Cleaning blade

Seperation pawl

Seperation corona unit

On the contrary, electric charges are generated more in the CGL layer corresponding to the darker density of document (lower intensity of the OPC drum surface), and less quantity of the negative charges on the CPU drum surface is neutralized, decreasing the OPC drum surface less. Therefore, the OPC drum surface potential corresponding to the lighter portion of the document is lower, and that corresponding to the darker portion of the document is higher. Latent static-electricity images are formed in the above manner.

Transfer corona unit

Developer unit MG roller

Resist roller

5 – 8

CTL

CGL

Low intensity in the area corresponding to the darker density portion of the document

Medium intensity in the area corresponding to the medium density portion of the document

HIgh intensity in the area corresponding to the lighter density of the document

Aluminum layer

OPC drum

Surface potential

(High)

CTL

CGL

Surface potential (Medium)

Surface potential (Low)

Aluminum layer

OPC drum

Step 5 (Development)

Toner is attached to the latent static-electricity images on the drum surface to change them to visible images. The two-component magnetic brush development system charges toner positively by friction with carriers, and toner is attached to negative charges on the drum surface. The potential in the darker document projecting area (low intensity) is high (much negative charges) and attracts more toner. The potential in the lighter document projecting portion (high intensity) is low (less negative charges), and attracts less toner.

Discharge lamp

Cleaning blade

Seperation pawl

Main corona unit

Seperation corona unit

Blank lamp

Developer unit MG roller

Resist roller

Transfer corona unit

OPC drum

CGL

Aluminum layer

Higher surface potential (Much negative

(charges)

Medium surface potential (Less negative

(charges)

Lower surface potential (No negative

(charges)

CTL

MG roller

-200V

High voltage unit bias voltage

At that time, a bias of –200V is applied to the MG roller (magnet roller), which is provided for preventing toner from being attracted by the residual voltage (about –80V to –100V) in the lighter portion after exposure.

Discharge lamp

Cleaning blade

Seperation pawl

5 – 9

Main corona unit

Seperation corona unit

Blank lamp

Developer unit MG roller

Resist roller

Transfer corona unit

Step 6 (Transfer)

The transfer paper is charged higher than the OPC drum surface potential by strong negative discharge of the transfer charger, making the binding force between the transfer paper and toner stronger than that between the drum and toner, attracting toner to the transfer paper.

Aluminum layer

OPC drum

CGL

CTL

Toner

Transfer paper

Seperation pawl

Transfer corona unit

h voltage unit

Step 7 (Separation)

After transfer, the copy paper and the drum are negatively charged. Since, however, the negative potential of the copy paper is higher than that of the drum, a attraction force is applied between the drum and the copy paper. To avoid this, AC corona is applied to the copy paper by the separation charger to decrease the copy paper potential to the same level as the drum surface potential. The attraction between the copy paper and the drum is weakened by this, allowing separation of the copy paper by its own extending force. If the copy paper is not separated by the separation charger, it is separated by the separation pawl mechanically.

Discharge lamp

Cleaning blade

Main corona unit

Seperation corona unit

Blank lamp

Developer unit MG roller

Resist roller

Transfer corona unit

Aluminum layer

CGL

CTL

High voltage unit

Seperation corona unit

OPC drum

Toner

Transfer paper

Discharge lamp

Cleaning blade

Seperation pawl

5 – 10

Main corona unit

Seperation corona unit

Blank lamp

Developer unit MG roller

Resist roller

Transfer corona unit

Step 8 (Cleaning)

Residual toner on the drum is removed by the cleaning blade. The removed toner is sent to the waste toner container by the waste toner transport screw.

Blade Aluminum layer

CTL

CGL

Residual toner

OPC drum

Step 9 (Discharging)

When the OPC drum is exposed to the discharge lamp light, positive and negative charges are generated in the OPC drum CGL. The negative charges generated in the CGL move towards the residual positive charges in the aluminum layer, while the positive charges in the CGL move towards the residual negative charges on the OPC

Discharge lamp

Cleaning blade

drum surface. Therefore, the positive and the negative charges are neutralized in the aluminum layer and on the OPC drum surface, removing the residual charges on the OPC drum surface. As a result, the OPC drum surface potential becomes 20V ∼ 30V.

Main corona unit

Seperation pawl

Seperation corona unit

Main corona unit

Blank lamp

Developer unit MG roller

Resist roller

Transfer corona unit

Blank lamp

Residual charge

OPC drum

CTL

CGL

Aluminum layer

Residual cha rge

(4) Transit of photoconductor drum surface potential

-800V

-600V

-400V

-200V

Separate (OFF)

Clean

DLTransfer

Charge

Exposure

Discharge lamp

Cleaning blade

Seperation pawl

Develop

Dark area

Light area

Seperation corona unit

Transfer

Developing bias voltage

Transfer corona unit

Separate Clean

Developer unit MG roller

Resist roller

T (Time)

5 – 11

Residual potential

(5) Process correction system

1) Outline of the correction system

This model is provided with the correction system for the optical unit and the photoconductor drum unit. The combination of the two correction systems provides stable clear copy. These functions are to maintain the copy quality for a long time and to correct the characteristics of the parts, and are controlled by the software and invisible from the outside.

2) Correction operation

1. Photoconductor drum unit correction (Photoconductor drum sensitivity correction)

Cleaner

Fig. 2

Correction level (CL voltage)

Fig. 3

VCL

OPC drum

Fig. 1

(NEW)

CTL

CGL

Change the tickness of the carrier transport layer (CTL).

Develop

By the developper. By the cleaner blade.

Manual mode exposure 1

Correction level is initialized by Simulation 46 or by repl ac ing the photoco ndu c tor dr um .

1000

200

300 400

(USED)

CTL

CGL

Photo mode exposure 1

Drum rotating time

Wear down

Manual mode exposure 5

Photo mode exposure 5

500

min

The photoconductor drum is subject to mechanical stress by the cleaning blade, resulting in wear in the OPC layer. In addition to that, the photoconductor drum receives optical stress from the copy lamp. These stresses reduce the photo sensitivity of the photoconductor drum, producing unnecessary dirt copy. This trouble is removed by adjusting the copy lamp voltage. For this model, however, to reduce the number of service calls, the copy lamp voltage is automatically dropped according to the reduction in the photo sensitivity of the photoconductor drum to correct it.

The drum rotating time from installation of a new photoconductor drum is counted by the timer and the copy lamp voltage is corrected in every mode. (Refer to Fig. 3.) The correction is performed within the range of the max. supply voltage of the copy lamp. (The rotating time of the photoconductor drum can be checked with Simulation 44-4.)

* The correction level is initialized by Simulation 46 or by replacing

the photoconductor drum.

* Replace the OPC drum for every 40K copies. After replacement,

be sure to reset the drum count value to "0" with SIM 24-7. The replacement timing of the OPC drum is indicated by lighting the OPC drum replacement lamp. The copy count of the OPC drum can be checked with SIM 22-12.

5 – 12

2. Optical unit correction (Dirt correction)

Diagram of correction system in the optical section

Referan c e r ef r ection plate

Copy lamp

AC power supply unit (Copy lamp control circuit)

AE SENSORMirror

The purpose of this correction is to maintain the copy density even though the optical unit is contaminated and to reduce troublesome cleaning of the optical unit. When the lamp, the mirror, and the reflector are dirtied with dusts and toner, the light quantity radiated to the photoconductor drum is reduced, increasing the copy density and producing unnecessary background copy. The above trouble is removed by changing the copy lamp voltage to adjust the copy density. It, however, requires serviceman’s operation. In this model, the AE sensor senses dirt on the copy lamp, the mirror, and the reflector, and the copy lamp light quantity is changed according to the dirt level to reduce the change in the copy density due to the optical unit dirt. When the optical parts are dirtied, the reflection rate is reduced to reduce the quantity of light which is passed to the optical dirt sensor. In this manner the dirt level is sensed.

[Initial setting]

After making a copy by Simulation 46, the scanner unit stops at the position of the standard reflection plate on the back of the document stopper to light the copy lamp at a certain level, and the AE sensor output level at that time is recorded as the reference value. (The reference value can be checked with Simulation 44-2.)

[Correction timing]

The correction is performed after the copy cycle after turning on the power, or after the specified time of rotation of the photoconductor drum.

[Correction operation]

The same operation as the initializing is performed to change the copy lamp voltage until the AE sensor output level reaches the same level as the reference value, performing the correction. The copy lamp voltage is revised to a new value at every correction, and the new value will be used in the next correction. (The correction voltage value can be checked with Simulation 44-3.)

[Correction timing]

• When the power is turned on.

• Once for every 155 min. of drum rotation.

AMP

Driver

Referan c e r ef r ection plate

MAIN CONTROL PWB

A/D converter

START

The scanner starts initializing.

The scanner unit stops at the standard reflection plate position.

Correction mode ?

YES

Copy lamp ON (67.7V/135V)

Optical di rt sensor reference level (DSENS) memory

END

CPU

Timer

Arithmetic unit

Copy lamp control clock generator

Copy lamp ON (67.7V/135V)

Sensor output =

Reference level

(DSENS) ?

No correction is made.

Copy lamp voltage correction

Table glass

YES

AE sensor (Next to the lens)

Copy lamp referance control level

Copy lamp voltage

0.3V ( 0.6V) up

YES

Sensor output

< Reference level

(DSENS) ?

Copy lamp correction voltage calculati on

EE-PROM

Copy lamp ON

Sensor output = Referenc e level

Copy lamp voltage

0.3V (0.6V) down

Copy lamp ON

Sensor output =

Reference level

(DSENS) ?

YES

(DSENS) ?

YES

5 – 13

[6] DISASSEMBLY AND ASSEMBLY

The descriptions of this chapter are divided into the following sections:

1. Paper feed section, paper transport section, power section

2. Manual paper feed section

3. Fuser section

4. Optical system

5. Drum section

6. Developer section

7. Operation panel/medium cabinet

8. Major parts in the frame side

1.Paper feed section, paper transport section, power section

1-1. Paper feed unit

1 Open the front cover and open the body. Release the right and

the left lock levers and pull out the manual paper feed unit.

2 Disconnect the CN-B connector of the lower PWB, remove the

paper feed unit fixing screws (4 pcs.), and lift the paper feed unit to remove.

1-2. Paper feed roller ass’y removal

1 Disconnect the connector of the magnetic clutch in the rear frame

side.

2 Remove the hook section of the paper feed roller bearing in the

front frame side by using a screwdriver.

3 Remove the roller release arm spring from the paper feed frame.

6 – 1

4 Remove the bearing in the rear frame and remove the paper feed

roller ass’y. Note for assembly (1): Hang the roller release arm spring on the

spring hook of the roller release arm. Attach the paper feed roller ass’y to the paper feed unit, and hang the spring on the paper feed frame.

Note for assembly (2): Attach the paper feed roller ass’y so that

the paper feed roller clutch faces the lower frame. When attaching the paper feed unit, insert it in the base unit hole of the copier.

1-3. Separation roller

1 Remove the paper feed unit and remove the separation roller.

1-4. Takeup roller, paper feed roller

1 Remove the paper feed roller ass’y, and remove the takeup roller.

2 Remove the roller holder, the stop ring, and the bearing, then

remove the paper feed roller.

6 – 2

Note for assembly (1): Attach the paper feed roller so that the

one-way clutch in the rear frame side. (Be careful to the installing direction.) Attach the roller holder as shown below:

One-way clutch side

3 Remove the clutch, and the gear as shown below:

1-5. Resist roller

1 Insert a screwdriver into the front frame hole to release the lock

pawl, and remove the TC case.

2 Disengage the hook section of the bearing in the front frame side,

lift it upward and remove towards the upper frame side. Remove the spring in the rear frame side. Disconnect the CN-E connector in the lower frame PWB unit. Slide the resist roller ass’y to the rear frame side and remove it upwards.

Note for assembly (1): When assembling, attach the positioning

pin of the resist roller clutch in the direction of paper exit.

Note for assembly (2): When assembling the resist roller ass’y to

the copier, attach it over the PS roller lower mylar and rotate the mylar and return the mylar to the original position. (To prevent deformation of the mylar)

6 – 3

1-6. Transport belt

1 Remove the fuser unit. 2 Remove the TC case. 3 Remove the transport belt drive shaft in the TC case from the

holder, and remove the drive shaft in the paper exit side, and remove the belt.

1-7. Socket holder unit

1 Remove the CN-C connector of the lower unit PWB, the ground-

ing wire, and the red high voltage lead wire (for separation electrode) which in the socket holder.

2 Remove the two fixing screws in the paper feed side, remove the

pawl from the positioning hole in the paper exit side, and slide it in the direction of paper feed to remove.

1-8. Lower unit PWB

1 Open the body up, and remove the rear lower cabinet. 2 Remove the connector, the PWB fixing screw (1 pc.), and the

CN-F fixing screws (2 pcs.). Slide the lower unit PWB to the front frame side and remove it upwards.

1-9. Cassette paper empty detector (CPED1)

1 Remove the rear lower cabinet. 2 Remove the fixing screw and the CN-D connector, and remove

CPED1.

1-10. Power unit

1 Remove the upper and the lower cabinets in the rear side. 2 Remove 12 connectors, two fixing screws, and the grounding

wire. Lift the power unit to remove it upwards.

6 – 4

Note for assembly (1): When attaching the harness, be careful to

the connector color and the lead wire color. (Carefully refer to the indication on the PWB for connection of the harness.)

Example: YE (WH) → Yellow connector and white lead wire

YE = Yellow, WH = White, BK = Black, GR = Green, BL = Blue

2. Manual paper feed section

2-1. Manual paper feed roller, manual takeup roller

1 Remove the manual paper feed unit from the copier. 2 Remove the roller auxiliary spring, the manual solenoid connector,

the E-rings in the front and the rear frames, and the bearing. Remove the manual roller ass’y together with the solenoid holder.

4 Remove the manual arm and the E-ring, and remove the manual

paper feed roller. Note: Gear 20T has a positioning pin. When removing the

manual arm, be careful not to miss the positioning pin.

Gear 20T (Positioning pin included)

Arrow mark

3 Remove the manual feed takeup roller from the manual arm.

Note for assembly (1): The manual paper feed roller is provided

with the one-way clutch. When attaching it, attach so that the arrow mark on the roller is in the E-ring side. (Be careful to the installing direction.)

2-2. Reverse rotation roller ass’y

1 Remove the manual feed roller ass’y. 2 Remove the reverse roller ass’y from the roller holder.

6 – 5

3. Fuser section

3-1. Fuser unit removal

1 Open the front panel 2 Remove the table glass. 3 Turn the open/close lever to the right and open the upper unit

slowly.

4 Remove the connectors (2 pin × 2), slightly lift the right side of the

unit and pull it out.

5 Move the copy lamp unit to the left of the body (the paper exit

side).

6 Disconnect the connector (2-pin) of the dehumidifier heater which

extends from the dark box cover. Insert a long screwdriver (+) into that port and remove the screw which is fixing the fuser cover.

7 Remove the fuser cover in the direction of arrow A.

8 Remove an E-ring and two connectors.

3-2. Heater lamp replacement

1 Remove the fuser cover fixing screw (1 pc.), and slide it to the

front side, and remove it.

2 While pushing the projection of the Faston terminal connected to

the thermostat, remove the lead wire from the connected section.

3 Remove the lamp holder fixing screw on the top of the rear frame,

and remove the holder. 4 Pull out the heater lamp from the front frame. For assembly, reverse the disassembly procedures.

6 – 6

3-3. Upper heat roller ass’y removal

1 Remove the bearing fixing screws (2 pcs.) in the front and the rear

frames.

2 Put the paper guide to the paper exit side and separate the

separation pawl from the roller and fix it.

3 Rotate the fixing screw section of the bearing about 45 degrees

below and pull it upwards.

For assembly, reverse the disassembly procedures.

3-5. Lower cleaning roller and lower heat roller

replacement

1 Remove the fuser unit. 2 Remove the CL roller springs (2 pcs.) which is fixing the lower

cleaning roller from the hook section.

3 Remove the lower cleaning roller. 4 Lift the paper exit guide, and remove the lower heat roller without

making contact between the roller and the scraper. For assembly. reverse the disassembly procedures.

3-4. Upper separation pawl replacement

1 Remove the fuser unit and remove the cover. 2 Place the fuser unit so that the paper guide is in the lower side.

(The separation pawl is in the upper side.)

3 Remove the tension spring, hold the tip of the separation pawl and

remove it from the supporting section, and tilt it to remove.

For assembly, reverse the disassembly procedures.

6 – 7

3-6. Scraper replacement

1 Remove the upper fuser unit. 2 Remove the paper exit paper guide fixing screw (step screw) in

the front frame side, and remove the paper exit paper guide.

Paper exit paper guide

3 Remove the scraper hook section from the paper exit paper guide,

and remove the scraper.

3-7. Thermistor/thermostat removal

Press this projection to desassemble

* Note for assembly

• Be sure to bring the thermistor center into contact with the heat

roller.

• Clean and remove foreign materials from the thermistor surface

with alcohol.

Scraper

Note: When attaching the scraper, be careful not to deform it. Also

be careful to check that the scraper hook section is completely inserted into the paper exit paper guide.

6 – 8

4. Optical system

4-1. Copy lamp replacement

1 Open the body up. Release the lock lever of the manual paper

feed unit and remove the manual paper feed unit.

2 Remove the fixing screws (2 pcs.) in the right upper cabinet, and

remove the right upper cabinet.

3 Remove the fixing screws (4 pcs.) of the glass holder, and remove

the glass holder.

4 Remove the table glass.

4-2. Copy lamp unit replacement

1 Remove the manual paper feed unit, the right upper cabinet, the

glass holder, the table glass, and the operation panel.

2 Move the copy lamp unit to the frame notch (refer to the figure). 3 Remove the terminal section of the copy lamp lead wire. (One

screw and insertion terminal) 4 Loosen the fixing screw of the front and the rear frame wire, fixing

plate and remove the wire from the copy lamp unit. 5 Slide the whole unit forward, and remove the rear frame side

upwards. For assembly, reverse the disassembly procedures.

Wire fixing screw

5 While pushing the copy lamp electrode in the rear frame, remove

the copy lamp.

For assembly, reverse the disassembly procedure. Note: Be careful to the direction of the copy lamp installation.

Wire fixing screw

Note: When the copy lamp unit is removed, the position adjustment

must be required when attaching again. Refer to the adjustment item for the work.

4-3. Mirror base drive wire replacement

1 Remove the manual paper feed unit, the right upper cabinet, the

glass holder, the table glass and the operation panel. 2 Remove the fixing screws (2 pcs.) of the left upper cabinet, and

slide to the rear frame side to remove the cabinet. 3 Loosen the fixing screw of the copy lamp unit wire fixing plate, and

remove the wire from the unit. 4 Remove the tension spring (7 in the figure) of the mirror base

drive wire in the paper exit side from the hook section. 5 Slightly shift the mirror base to the paper feed side, and remove

the terminal 1 of the mirror base drive wire. 6 Remove the wire fixing screw of the drive pulley.

1 Set the mirror base to the positioning plate position. 2 Set the terminal side of the mirror base drive wire on the hook

section 1, turn the mirror base pulley 2 outside to wind the wire

around the drive pulley from the above. 3 Wind the wire 8 turns from the outside to the inside of the drive

pulley, and put the 7th turn into the groove, and fix it with a screw

temporarily. 4 Pass the wire under the mirror base and wind around the paper

exit pulley (the larger one). 5 Pass the wire to the inside of the mirror base pulley, and pass

through the paper exit pulley (the smaller one), then fix the tension

spring to the hook section 7. 6 Check that the mirror base is in contact with the positioning plate,

and tighten the wire fixing screw of the drive pulley.

6 – 9

Note: After replacement of the mirror base drive wire, perform the

vertical skew copy adjustment, the focus adjustment, and the horizontal skew copy adjustment.

4-4. Lens and lens drive wire replacement

1 Remove the manual paper feed unit, the right upper cabinet, and

the table glass.

2 Remove the dark box cover fixing screw (1 pc.) and the cover.

3 Shift the lens carriage unit to the paper feed side. 4 Remove the tension spring of the lens drive wire from the hook

section, and remove the wire.

5 Remove the shaft mounting plate in the paper feed side, and

remove the shaft and the carriage unit.

1 Pass the lens drive shaft through the carriage unit, and set the

shaft to the shaft support section of the base plate.

2 Fix the shaft mounting plate in the paper feed side. 3 Store the lens unit projection in the lens guide rail. 4 Set the lens drive wire on the carriage unit. 5 Align the No.4/5 mirror zoom cam and the carriage unit to the

normal copy position 6 Manually hold and fix the carriage unit, and wind the wire around

the drive gear. 7 Wind the wire around the pulley, pull it slightly and attach the

spring to it, and set the spring on the hook section. Note: When the lens unit is removed, the right angle adjustment, the

magnification ratio adjustment, and the focus adjustment are required.

6 – 10

Note: When the lens drive wire is removed, the magnification adjust-

ment and the focus adjustment are required.

4-5. No. 4/5 mirror unit and peripheral parts

replacement

1 Remove the manual paper fed unit, the right upper cabinet, and

the table glass.

2 Remove the dark box cover fixing screw (1 pc.) and remove the

cover.

3 Remove the mirror holder spring. 4 Remove the shaft mounting plate, pull out the shaft towards the

paper feed side, and remove No. 4/5 mirror unit.

4-6. Optical unit removal

1 Remove the drum unit and the developer unit. 2 Remove the right cabinet, the left cabinet, the operation panel, the

medium cabinet, and the rear cabinet. 3 Remove three connectors A from the sensors in the rear as

shown in the figure. 4 Remove connector B between the mirror motor and the main

PWB (CN-C). 5 Remove two snap bands C which are binding cables of the

operation panel. 6 Remove the optical unit .

5 Remove the fixing screw of the center section of the drive pulley,

and remove the pulley.

6 Remove the CN-E connector of the main PWB, remove the drive

motor fixing screws (2 pcs.), and remove the No.4/5 mirror unit from the mounting secti on (square hole in the bas e plate).

For assembly, reverse the disassembly procedures.

4-7. Other parts in the optical system

1 Remove the rear upper cabinet. 2 Remove the CN-C connector of the main PWB and the fixing

screws (2 pcs.), and pull out the mirror motor towards the rear

frame.

6 – 11

3 Remove the connector and the fixing screw (1 pc.), and remove

the mirror home position sensor (MHPS) towards the rear frame.

4 Remove the connector and the fixing screw and pull out the lens

home position sensor (LHPS) towards the rear frame.

5 Remove the fixing screw (1 pc.) of the upper frame and the screw

and the connector in the rear frame, then remove the main PWB.

4-8. Light adjustment plate/temperature fuse

removal

1 Remove the document glass. 2 Remove the parts as shown in the figure.

6 Remove the connector, the manual paper feed unit, the right

upper cabinet, the table glass, and the dark box cover. Remove the fixing screw from the above and remove the AE sensor towards the front frame side.

For assembly, reverse the disassembly procedures.

6 – 12

5. Drum section

5-1. Drum unit removal

1 Open the front cover. 2 While pressing down the release lever A, open the toner

cartridge slowly. (Arrow B)

3 Remove the screw and remove the drum unit.

6-2. Developer cartridge removal

1 Place the magnet roller of the developer unit on the box to protect

it.

6. Developer section

6-1. Developer unit removal

1 Open the front cover. 2 While pressing down the release lever, open the toner cartridge

slowly and remove it.

3 Loosen the step screw A. 4 Pull out the developer unit.

2 As shown in the figure below, open the section which is pressing

the cartridge pawl with a screwdriver, and pull out the developer

cartridge.

6-3. Toner motor removal

1 Remove four short screws A and one long screw B, and the

connector, and separate the toner cartridge section.

6 – 13

2 Remove two screws C and remove the motor.

6-4. Toner density sensor

8. Major parts in th e frame side

8-1. Ozone filter

1 Remove the document glass. 2 Remove the black sheet and remove the ozone filter.

7. Operation pan el sect io n/med iu m cabinet

1 Open the front cabinet. 2 Remove three screws A and two harnesses from the operation

panel.

3 Remove the operation panel unit.

8-2. Optical unit cooling fan removal

1 Remove the rear cabinet. 2 Remove as shown below.

4 When removing the medium cabinet, first remove the process unit

and the developer unit then remove four screws B and remove the medium cabinet.

6 – 14

8-3. Ventilation fan motor

1 Remove the optical unit. (For details, refer to "4. Optical unit

removal.")

2 As shown in the figure below, remove the ventilation fan motor.

8-4. Transport roller clutch

1 Remove the rear cabinet. 2 Remove the transport clutch as shown in the figure below.

8-5. Paper exit sensor

1 Open the front panel. 2 Move the open/close lever to the right and open the upper unit

slowly.

3 Remove the sensor as shown in the figure below.

6 – 15

[7] ADJUSTMENTS

The descriptions of this chapter are divided into the following sections:

1. Developer section

(1) MG roller main pole position adjustment (2) Adjustment of clearance between DV doctor and MG roller

2. Optical section

(1) Lens unit angle adjustment (2) Mirror unit angle/position adjustment (3) Image distortion adjustment (4) Copy image center position adjustment (5) Focus adjustment (6) Copy magnification ratio adjustment (7) Uniformity adjustment (8) Image loss/void area adjustment

3. Copy density adjustment

(1) Copy Density adjustment timing (2) Note for copy density adjustment (3) Necessary thing for copy density adjustment (4) Copy density adjustment mode (5) Copy density adjustment procedure (6) Copy density adjustment table

4. Others

(1) Transfer charger wire installation (2) DV bias adjustment (3) Separation charger output adjustment

2 Tie a string to a needle as shown in the figure below. 3 Hold the string and move the needle to the MG roller. 4 Mark the point where the needle makes contact with the MG

roller.

Marking

5 Measure the distance between the marking and the developer unit

bottom A and check that the distance is within 15.1mm. If the measured distance is outside the range, loosen the MG adjustment plate fixing screw, and move the adjustment plate in the arrow direction to perform procedures 3 to 5 again.

1. Developer section

(1) MG roller main pole position adjustment

If the MG roller main pole position is improper, the following troubles may occur:

• Insufficient copy density

• Toner splash

1 Remove the DV unit from the body and remove the DV cover.

DV cover

15.1mm

6 Tighten the MG adjustment plate fixing screw.

7 – 1

(2) Adjustment of clearance between DV doctor

and MG roller

If the clearance between the DV doctor and the MG roller is improper, the following troubles may occur:

• Insufficient copy density

• Copy dirt

• Toner splash

1 Remove the DV cover. 2 Loosen the DV doctor fixing screw. 3 Insert a 0.625mm thickness gauge into the clearance between the

MG roller and the DV doctor in the range of 30mm width under the DV doctor fixing screw.

4 Press the DV doctor in the arrow direction and tighten the DV

doctor fixing screw.

5 Check that the clearance of the DV doctor is 0.625 ±0.03mm in

the range of 30mm width under the DV doctor fixing screw.

0.625±0.03mm

30mm

Note: When adjusting, be careful not to scratch the DV doctor.

7 – 2

2. Optical section

A. Adjustments list

Classification No. Adjustment content

Parts installation position

Copy picture quality

For details, refer to the Ref. page.

(1)

Lens

(2)

Mirror

(3)

Image distortion adjustment

(4)

Copy image center position adjustment

(5)

Focus adjustment (Resolution adjustment)

(6)

Copy magnification ratio adjustment

(7)

Uniformity adjustment

(8)

Image loss, void area adjustment

Lens unit right angle adjustment

No.4/5 mirror unit right angle adjustment

No. 4/5 mirror unit drive cam position adjustment

Horizontal image distortion adjustment

Vertical image distortion adjustment

Vertical copy magnification ratio adjustment (normal copy)

Vertical copy magnification ratio adjustment (zoom copy)

Horizontal copy magnification ratio adjustment (zoom copy)

Copy image position adjustment

Lead edge void area adjustment End edge void area adjustment

Adjustment

value/Standard

value

— — 7-6

— — 7-7

— — 7-8

— — 7-8 — — 7-11

0 ±1.5 mm — 7-12

100 ±0.8% — 7-15

100 ±0.9% — 7-16

100 ±0.8% — 7-16

— — 7-18

Necessary

special tool

— 7-14

* — 7-19

* — 7-23

Ref.

page

B. Notes

When performing the adjustment, observe the following notes:

1) Observe the sequence of procedures shown in the flowchart

below.

2) Adjustment can be started midway in the flowchart only if all the

previous items have been properly adjusted.

3) If the content of an adjustment item in the flowchart is changed,

all the following items must be adjusted accordingly. Any adjustment item is based on the previous adjustment items and relates to the following adjustment items.

4) "Sim" in the flowchart stands for "Simulation."

START

(1)-a

Adjust the lens unit inclination to zero.

(2)-a

Adjust No.4/5 mirror unit inclination to zero.

Check the lens No. (OL No.)

Obtain the lens reference position set value from the lens No. table.

Execute Sim48-1 to set the lens reference position set value.

Obtain the lens reference position set value in the zo om c o py mode from the lens No. table.

Execute Sim26-08 to set the lens

reference position set value in the

zoom copy mode.

Set to the normal copy state in the

(2)-b

normal copy mode and set the lens unit to the normal position. Then fix the No.4/5 mirror drive cam position to the specified position.

Fix the blank lamp to the center.

(4)

Fix the lens center position adjustment rail at the center t e mporarily.

(5)

Fix No.4/5 mirror position to the center.

Standard setting value in the sim48-1 and 26-8 (Reference)

Lens No. –1 0 1 2 3 4 5 6 7 8 9 10 11 12 sim48 77 75 73 72 70 68 67 65 63 61 60 58 56 55 sim26-8 0 1 2 3 4 5 6 7 8 9 10 11 12 13 Lens No. 13 14 15 16 17 18 sim48 53 51 49 48 46 44 sim26-8 14 15 16 17 18 19

7 – 3

(3)-a

Make a test chart. (Draw a rectangle on B4 or 8 1/2" x 14" paper.)

With the document cover open, make a 90% copy on B4 or 8 1/2" x 14"paper.

Check horizontal image distortion.

The

distances at the

right and the left of the horizontal

copy image line and the black background

made by the blank lamp are equal

to each other.

(3)-b

With the do cument cover closed, make a 10% copy on B4 or 8 1/2" x 14" paper.

Check that the right corner and the left corner angles of the copy image are right angles.

of the copy image equal

With the document cover closed, make a 100% copy on B4 or 8 1/2" x 14" paper.

Check the copy image vertical distortion.

four angles of the copy

Make a test chart. (Draw a rectangle at

(4)

the center of B4 or 8 1/2" x 14" paper in the longitudinal direction.)

YES

Is the

right corner angle

to the left corner

angle ?

YES

Ar e t he

image rectangle right

angles ?

YES

Use the test chart (UKOG-0089CSZZ)

(5)

Change the relative positions of the rear or the front frame side

scanner drive pulley and the shaft, and adjust horizontal image distortion.

Change the height balance of right and left scanner slide rails, and adjust so that the corner

angles of the copy imag e rectangle are equal to each other.

//9/

Change No. 4/ 5 mi rror height

balance and adjust vertical image distortion.

or the resolution chart to make a 100% copy on B4 or 8 1/2" x 14" paper so that the resolution patterns are copied at the center and the four corners.

Check the resolution at the center and the four corners.

Is the center

resolution more than

5.0 lines/mm and are the corner resolu tions more th an

4.5 lines/mm ?

(6)-a

Set the scale along the document reference plate (verti cal to the paper transport direction) and make a 100% copy on B4 or 8 1/2" x 14" paper.

Compare the scale and its copy image size.

YES

Are they the same size ?

(6)-b

Make a copy on B4 or 8 1/2" x 14" paper at the max. enlargement ratio. (Z oom model only)

Check that the max. enlargement ratio matches with the copy image size.

(6)-c

Set the scale in the paper transport direction, and make a copy on B4 or 8 1/2" x 14" paper at 100%.

YES

Are the

enlargement ratio and

the copy image size

matched ?

YES

Change No.4/5 mirror positions

to adjust focus .

Set the Sim48-1 set value smaller.

Is the copy

image greater than the

actual scale ?

Set the Sim26-8 set value smaller.

image greater for the

enlargem ent ratio ?

YES

Is the copy

Set the Sim48-1 set value greater.

Set the Sim26-8 set value greater.

Set the test chart to the document positioning reference plate, and make a 100% copy on B4 or 8 1/2" x 14" paper by cassette paper feed.

Check that the copy image is at the center of the copy paper.

Is the

copy image at the

center of the copy

paper ?

YES

Change the lens rail position so

that the copy image comes at the center of the copy paper.

Compare the scale and its copy image size.

Are they the same size ?

YES

Is the S PF installed ?

7 – 4

Set Sim48-2 s et value smaller.

YES

Compare the scale and the copy image in the paper transport direction.

YES

Is the copy image grea ter than the actual

Set a document with th e fixed size images in the SPF mode and make a copy on B4 or 8 1/2" x 14" paper at 100%.

Are th ey the same size ?

scale ?

YES

Set the Sim48-3 set value smaller.

Set the Sim48-2 set value greater.

YES

Is the copy

image greater than

the actual scale ?

Set the Sim48-3 set value greater.

(7)

Use a half-tone document and make a 100% copy on B4 or 8 1/2" x 14" paper in the half tone mode.

Check the uniformity.

Is the uniformity OK ?

YES

Put the scale to the document reference plate and set in the paper transport direction.

Set the Sim45 set value to "0."

(8)-a

Set the Sim50-1 set values A and B to "0."

YES

Change the installing position of

the exposure adjustment plate to adjust the uniformity.

Make copies at the max. enlargement ratio and the min. enlargement ratio.

Measure the distances between the copy image lead edge and the copy paper lead edge of the max. enlargement copy and the min. enlargement copy, and compare the two.

0 ± 1.0 mm ?

Make a 100% copy with Sim50-1.

Measure the distance between the copy image lead edge and the copy paper lead edge.

0 ± 1.0 mm ?

YES

Change the Sim50-1 set value A

so that the difference is within the spe c i fied range.

Change the Sim50-1 set value B so that the difference is within the specified range. (SF-2414/2514)

Change the Sim50-1 set value A so that the difference is

within the specified range. (SF-2314)

Make a copy on B4 or 8 1/2" x 14" paper at the max. enlargement rat io and the min. reduction ratio in the document table mode.

Measure the distance between the copy image lead edge and the paper lead edge of each copy.

Distance in the max. enlargem

L1 =

ent ratio Distance in the min. reduction

L2 =

ratio

Calculate the Sim50-1 set value from the following formula. A = 8.243 x (L1 - L2) B = 16.0668 x L2 -7.9661 x L1

Set the Sim50-1 set values A and B.

YES

Change the Sim45-1 set value to adjust the end edge void area.

(8)-b

Make a 100% copy in the document table mode and check the lead edge void area. (Document table mode)

0 mm ?

-0

YES

Use a blac k co lo r document and make a 100% copy on the A4 or 8 1/2" x 14" paper

1 ~ 3mm ?

YES

End

Change the Sim45-1 set value

to adjust the void area.

7 – 5

C. Adjustment contents

(1) Lens

a. Lens unit right angle adjustment

I. Summary

By setting the optical axis of the copier body and that of the lens in parallel with each other, copy image distortion due to the lens can be reduced. The horizontal angle of the lens unit slide shaft is changed by changing the position of the lens unit slide shaft fixing plate. This adjustment is performed not by checking a copy image, but by visual measurement with the mark on the optical unit base as the reference. The copy image distortion must be adjusted not only in this adjustment but also in the mirror parallelism adjustment.

II. Purpose

The purpose of this adjustment is to reduce copy image distortion due to the lens by setting the optical axis of the copier body and the optical axis of the lens in parallel with each other.

III. Note

The copy image distortion adjustment is completed by making a copy and adjusting parallelism of the mirror. For that purpose, this adjustment must have been properly performed.

IV. Cases when the adjustment is required

1) When the lens or the lens unit is disassembled or its part is replaced.

2) When the copy image is distorted as follows (because of different copy magnification ratios in different sections):

Large copy magnification ratio

Normal copy magnification ratio

Small copy

Document Copy

V. Necessary tool

Screwdriver (+)

VI. Adjustment procedure

1) Remove the right upper side cabinet and the document reference plate.

magnification ratio

Optical unit cover

4) Hold section A of the lens unit slide, and move the lens unit side section to the mark on the optical unit base.

Section A

Optical unit base

5) Loosen the lens unit slide shaft fixing screw.

Mark

Document reference plate

2) Remove the document glass.

3) Remove the optical unit cover.

Document table glass

Right upper side cabinet

7 – 6

Center mark

Lens unit slide shaft fixing plate

6) Fix the lens unit slide shaft fixing plate in the center mark position.

VII. Troubles caused by improper adjustment

(2) Mirror

There are following adjustments of parts installation positions related to the mirror.

No. 4/5 mirror unit right angle adjustment

No. 4/5 mirror unit drive cam position adjustment

a. No. 4/5 mirror unit right angle adjustment

I. Summary

Copy image distortion caused by No. 4/5 mirror unit van be reduced by setting the optical axis of the copier and No. 4/5 mirror unit. The horizontal angle of the lens unit slide shaft is adjusted by changing the position of No. 4/5 mirror nit slide shaft fixing plate. This adjustment is performed not by checking a copy image but by visual measurement with the optical unit base plate as the reference. Copy image distortion must be adjusted ont only in this adjustment but also in the No. 1/2 scanner unit parallelism adjustment.

II. Purpose

The purpose of this adjustment is to eliminate copy image distortion by setting the optical axis of the copier and that of the No. 4/5 mirror unit in parallel with each other.

III. Note

The copy image distortion adjustment is completed by making a copy and adjusting the parallelism of No. 1 and No. 2 scanner units. For that purpose, this adjustment must have been properly performed.

IV. Cases when the adjustment is required

1) When No. 4/5 mirror unit is disassembled or its part is replaced.

2) When the copy image is distorted as follows:

2) Remove the document glass.

Optical unit cover

3) Loosen the fixing screw of the No. 4/5 mirror unit slide shaft fixing plate.

Document Copy A Copy B

V. Necessary tools:

Screwdriver (+)

Scale

VI. Adjustment procedure

1) Remove the right upper side cabinet and the document reference plate.

Document reference plate

Document table glass

No. 4/5 mirror unit slide shaft fixing screw

4) Move the No. 4/5 mirror unit slide shaft fixing plate in directions A and B so that the No. 4/5 mirror unit side is in parallel with the optical unit frame side plate, and fix it. Use a scale to check the parallelism.

Right upper side cabinet

7 – 7

VII. Trouble caused by improper adjustment

b. No. 4/5 mirror unit drive cam position adjustment

I. Summary

The copy magnification ratio and focus are properly adjusted by matching the lens unit movement and the No. 4/5 mirror movement. This adjustment is performed by changing the relative positions of the lens unit drive gear and the No. 4/5 mirror unit drive cam.

II. Purpose

The purpose of this adjustment is to adjust the relative positions of the lens unit drive gear and the No. 4/5 mirror unit drive cam and to adjust the copy magnification ratio and the focus.

III. Note

IV. Cases when the adjustment is required

1) When the lens and the No. 4/5 mirror drive section are disassembled or its part is replaced.

2) When the focus is improper though the copy magnification ratio is proper, or vice versa.

V. Necessary tools

Screwdriver (+)

M4 x 20 screw

VI. Adjustment procedure

1) Set the copy magnification ratio to 100%, and set the lens unit to the position for 100% copy magnification ratio.

2) Remove the right side cabinet and the document reference plate.

5) Loosen the No. 4/5 mirror unit drive cam fixing screw without moving the lens unit drive gear.

Cam

Do not move

Cam fixing screw

6) Turn the No. 4/5 mirror unit drive cam without moving the lens unit drive gear so that the cam positioning hole is fit with the reference hole in the optical unit frame.

Requires changing relative position of cam and gear

Standard fixing position

when having an out of focus copy in the enlargement reduction copy mode

Document reference plate

3) Remove the document glass.

4) Remove the optical unit cover.

Document table glass

Right upper side cabinet

Optical unit cover

Cam fixing screw

Do not move.

7) Pass the M4 x 20 screw through the No. 4/5 mirror unit drive cam positioning hole and fix the screw to the frame without turning the cam.

8) Tighten the cam fixing screw to fix the No. 4/5 mirror unit drive cam to the lens unit drive gear without moving the lens unit drive gear.

9) Remove the screw which was fixed to the frame in procedure

7).

VII. Troubles caused by improper adjustment

(3) Image distortion adjustment

There are following two types of image distortion.

Horizontal image distortion

Vertical image distortion

Image distortion is generated mainly by insufficient parallelism of the mirror and misalignment of the lens optical axis. In this model, image distortion is adjusted by adjusting parallelism of each mirror.

a. Horizontal image distortion adjustment

I. Summary

This adjustment is to adjust horizontal image distortion by setting the horizontal optical axis of the copier and the horizontal optical axis of each mirror in parallel with each other. The relative posi-

7 – 8

tions of the front frame and the scanner unit drive pulley of the frame are changed to perform the above adjustment.

Frame

Reference hole

Install the No. 1 and No. 2 scanner units to the specified positions, adjust the mechanical horizontal parallelism, and perform the final adjustment while making copies.

II. Purpose

The purpose of this adjustment is to reduce horizontal image distortion by setting the horizontal optical axis of the copier and the No. 1 and No. 2 scanner unit horizontal optical axis in parallel with each other.

III. Note

Before starting this adjustment, the following items must have been completed. If not, this adjustment cannot reduce image distortion.

The lens unit right angle adjustment must have been com-

pleted. The No. 4/5 mirror unit right angle adjustment must have

been completed.

IV. Cases when the adjustment is required

1) When the No. 1 and No. 2 scanner units are disassembled or their part is replaced.

2) When the scanner unit drive section is disassembled or its part is replaced.

3) When the copy image is distorted as shown below:

Document Copy A Copy B

V. Necessary tools

Screwdriver (+)

Hex wrench

Scale

Test chart for distortion adjustment (Make a chart shown

below by yourself.) Draw a rectangle on a paper (B4 or 8 1/2" x 14") as shown below. Be sure to make four right angles.

2) Remove the document glass.

3) Loosen the fixing screw of the No. 1 scanner unit wire.

Wire fixing screw

4) Manually turn the scanner unit drive gear to bring No. 2 scanner unit into contact with No. 2 scanner unit positioning plate. When No.2 scanner unit makes contact with No.2 scanner unit positioning plate in the rear frame side simultaneously, the mechanical parallelism of No.2 scanner unit is proper. If one side of No.2 scanner unit makes contact with No.2 scanner unit positioning plate and the other side does not, the parallelism is improper. If the parallelism is improper, perform the procedure of step

5).

L=10mm

VI. Adjustment procedure

1) Remove the right upper side cabinet and the document reference plate.

Document reference plate

Document table glass

Right upper side cabinet

5) Loosen the scanner unit drive pulley setscrew in the side where No.2 scanner unit does not make contact with No.2 scanner unit positioning plate.

Set screw

Scanner unit drive pulley

7 – 9

6) Without moving the scanner unit drive pulley shaft, manually turn the scanner unit drive pulley in the same side of the loosened setscrew. When it makes contact with No.2 scanner unit positioning plate, tighten and fix the setscrew.

Do not move the shaft.

No.2 scanner unit

Positioning plate

Scanner unit drive pulley

(Note) Allow a clearance of about 0.5mm between the scanner unit drive pulley and the positioning E-ring.

Procedures 1) to 8) are for adjustment of mechanical horizontal parallelism. No.1 scanner unit and No.2 scanner unit are fixed to the specified positions and the mechanical horizontal parallelism of No.2 scanner unit is adjusted.

0.5mm

7) Manually turn the scanner unit drive gear to bring No.2 scanner unit into contact with the positioning plate, and perform the procedure of step 4). Repeat procedures of steps 4) to 7) until the parallelism of No.2 scanner unit is properly set.

8) With No.2 scanner unit being in contact with No.2 scanner unit positioning plate, and insert the 1.0 mm spacer between No.1 scanner unit and upper-R frame, bring No.1 scanner unit into contact with upper-R frame, and fix it to the scanner unit drive wire.

No.1 scanner unit

Upper-right frame

Wire fixing screw

Then the optical horizontal parallelism must be adjusted in the following procedures.

9) Set the image distortion check chart on the document table, and make a reduction copy (90%) on an B4 or 14" x 8 1/2" paper with the document cover open.

50mm

B4 or "11 x 14" size paper

Wire fixing screw

1.0mm spacer

7 – 10

10) Check the horizontal image distortion. If LL = LR, there is no horizontal distortion.

LL and LR = Distance between the copy

horizontal line and the outer edge of the black background

Black background

11) If LL is not equal to LR, perform the following procedure. Loosen the setscrew of the scanner unit drive pulley in the front or the rear frame.

Set screw

Scanner unit drive pulley

b. Vertical image distortion adjustment

I. Summary

This adjustment is to adjust parallelism of the vertical optical axis of the copier and that of each mirror to eliminate vertical image distortion. For adjusting vertical image distortion, the overall adjustment and the right-left balance adjustment must be performed independently. The overall adjustment is performed by changing the height of No.4/5 mirror unit in the front frame side. The right-left balance adjustment is performed by changing the right-left balance of No.2 scanner unit rail. The right-left balance adjustment must be performed in advance to the overall adjustment.

II. Purpose

The purpose of this adjustment is to set parallelism of the vertical optical axis of the copier and that of No.4/5 mirror unit and No.2 mirror unit to eliminate vertical image distortion.

III. Note

Before performing this adjustment, the following adjustments must have been completed. If not, this adjustment cannot be performed properly.

The lens unit right angle adjustment

No.4/5 mirror unit right angle adjustment

Horizontal image distortion adjustment

IV. Cases when the adjustment is required

1) When No.4/5 mirror unit is disassembled or its part is replaced.

2) When the scanner unit drive section is disassembled or its part is replaced.

3) When the copy image is distorted as follows:

12) Without moving the scanner unit drive pulley shaft, manually turn the scanner unit drive pulley whose setscrew was loosened, and adjust the parallelism of No.1 and No.2 scanner units.

Do not move the shaft.

Scanner unit drive pulley

13) Tighten the set screw of the scanner unit drive pulley.

14) Check the image distortion in the same manner as step

10). Repeat procedures 11) to 14) until horizontal image distortion is eliminated.

VII. Troubles caused by improper adjustment

No.2 scanner unit.

No.1 scanner unit

Document Copy C Copy D

V. Necessary tools

Screwdriver (+)

Screwdriver (–)

Scale

Test chart for distortion adjustment (Make by yourself.)

Draw a rectangle on A4 or 8 1/2" x 11" paper as shown below: Be sure to make four right angles.

L = 10mm

7 – 11

VI. Adjustment procedure

1) Set the test chart for image distortion adjustment on the

document glass, and make a normal copy on a paper of A4 or 8 1/2" x 11".

2) Check image distortion in the right and the left sides.

If the both vertical lines are in parallel with each other, the right-left distortion balance is proper. (However, there may be some distortion.) If all the four angles are right angles, there in no distortion and the following procedures are not required.

4) Change the height of the roller in No.4/5 mirror unit front frame side to adjust the vertical image distortion. If the copy image is tilting as shown in sample (X) below, lower No.4/5 mirror unit. If it is tilting as shown in sample (Y) below, lift No.4/5 mirror unit.

Large distortion

3) If the right-left distortion balance is improper, loosen the fixing screw of No.2 scanner unit rail to change and adjust the right-left balance of No.2 scanner unit rail. (Note) This procedure is to have the balance between the right image distortion and the left image distortion, which does not mean to eliminate the image distortion. Change the height of No.2 scanner unit rail in the greater distortion side. If the distortion in the lead edge side (when viewed in the paper transport direction) is greater, change the height of the left rail of No.2 scanner unit. If the distortion in the rear edge side (when viewed in the paper transport direction) is greater, change the height of the right rail of No.2 scanner unit.

Change the right side height of the rail.

Small distortion

(X) (Y)

5) Make a copy to check the vertical image distortion. If the four angles are right angles, the adjustment is completed.

Change the left side height of the rail.

Scanner unit fixing screw

Scanner unit rail

Repeat procedures 2) and 3) until the right-left balance of image distortion is proper.

Repeat procedures 4) and 5) until the vertical image distortion is eliminated.

(Note) If a vertical image distortion is not eliminated with

procedure 4), change the overall height of No.2 scanner unit rail. Then repeat procedures 1) to 5).

VII. Troubles caused by improper adjustment

(4) Copy image center position adjustment

I. Summary

The optical axis is changed by changing the lens rail position to optically align the document table and the vertical position of the copy image on the copy paper. When the lens rail position is changed, the lens position in the front and the rear frame direction is changed to change the optical axis. As a result, the document table is optically aligned with the copy image on the copy paper.

II. Purpose

The purpose of this adjustment is to set the copy image center at the vertical center of the copy paper.

7 – 12

III. Note

Before performing this adjustment, the following adjustment must have been completed. If not, this adjustment cannot be performed properly.

Lens unit right angle adjustment

No.4/5 mirror unit right angle adjustment

Image distortion adjustment

IV. Cases when the adjustment is required

1) When the lens unit is disassembled or its part is replaced.

2) When the lens rail is disassembled or its part is replaced.

3) When the copy image is shifted from the vertical center of the paper.

V. Necessary tool

Screwdriver (+)

Scale

Test chart for center position adjustment (Make a chart

shown below by yourself.) Draw a line in the paper transport direction at the center of A4 or 8 1/2" x 11" paper.

Center Copy paper

(A4 or 8 1/2" x 11")

5) Remove the right side cabinet and the document reference plate.

Document reference plate

Document table glass

Right upper side cabinet

6) Remove the document glass.

7) Remove the optical unit cover.

Optical unit cover

VI. Adjustment procedure

1) Set the test chart for center position adjustment at the document reference position.

2) Make a normal copy (100%) on A4 or 8 1/2" x 11" paper.

3) Check that the image of the line is at the center of the paper. (Standard: 0±1.5mm)

1.5mm or less

(Copy A)

Shift

1.5mm or less

(Copy B)

Shift

Copy image Folding of copy paper

Folding of copy paper Copy image

4) If the image of the line is not at the center of the paper, perform the following procedure.

8) Loosen the lens rail fixing screw, and slide the lens rail back and forth.

Lens rail

Fixing screw

7 – 13

Lens unit

9) Make a copy and check that the image line is at the center of the paper. If not, repeat the procedures 1) to 9) until the image line comes at the center of the paper.

VII. Troubles caused by improper adjustment

(5) Focus adjustment (Resolution adjustment)

I. Summary

The distance between the document and the photoconductor drum is changed by changing No.4/5 mirror unit drive lever position to adjust the focus.

II. Purpose

The purpose of this adjustment is to correct the lens variations and the optical section dimensional variations to have good copy images with a proper focus.

III. Note

Before performing this adjustment, the following adjustment must have been completed. If not, this adjustment cannot be performed properly.

Image distortion adjustment

IV. Cases when the adjustment is required

1) When the lens or the mirror unit is disassembled or any one of their parts is replaced.

2) When the scanner unit drive section is disassembled or its part is replaced.

3) When a copy image of improper focus is obtained.

V. Necessary tools

Screwdriver (+)

Test chart (One with the resolution adjustment chart)

VI. Adjustment procedures

1) Set the test chart on the document table.

2) Make a normal copy (100%) on A4 or 8 1/2" x 11" paper.

3) Check that resolutions at the copy paper center and the four angles are as shown in the table below:

(Standard) (Unit: lines/mm)

Copy center Corner Normal (100%) 5.0 4.5 Enlargement 5.0 4.5 Reduction 4.5 3.6

(Copy)

Check the corners.

If any resolution is out of the above specifications, perform the following procedures.

4.5

5.0

5.6

6.3

7.1

8.0

9.0

9.1

9.2

9.2 9.2

2.8

3.2

3.6

4.0

4) Remove the right cabinet and the document reference plate.

Document reference plate

Document table glass

Right upper side cabinet

5) Remove the document glass.

6) Remove the optical unit cover.

Optical unit cover

7) Loosen the fixing screw of No.4/5 mirror unit drive lever to change the position of No.4/5 mirror unit drive lever or No.4/5 mirror unit. In this case, do not shake No.4/5 mirror unit, just change its position.

No.4/5 mirror rive lever fixing screw

No.4/5 mirror drive lever

7 – 14

No.4/5 mirror unit frame

8) Make a copy and check that the resolutions are in the specified range. If any resolution is out of the specified range, repeat procedures 1) to 8).

VII. Troubles caused by improper adjustment

(6) Copy magnification ratio adjustment

The copy magnification ratio adjustment must be performed in the vertical direction and in the horizontal direction. In addition, the horizontal copy magnification ratio adjustment must be performed both in the document table mode and in the SPF mode. Firstly perform the vertical copy magnification ratio adjustment, then perform the horizontal copy magnification ratio adjustment.

a. Vertical copy magnification ratio adjustment (Normal

copy)

I. Summary

The vertical copy magnification ratio adjustment must be performed in the normal (100%) copy mode and in the zoom copy mode. In the normal (100%) copy mode, the lens home position is changed voluntarily with simulations 48-1 to adjust the vertical copy magnification ratio. In the zoom copy mode, the lens shift ratio is changed with simulations 48-1 according to the lens home position set with simulations 48-1 to adjust the zoom copy magnification ratio. The vertical copy magnification ratio adjusted in this procedure is used for the horizontal copy magnification ratio adjustment.

II. Purpose

The purpose of this adjustment is to fit the displayed copy magnification ratio with the actual copy image size.

III. Note

Before performing this adjustment, the following adjustments must have been completed. If not, this adjustment cannot be performed properly.

Image distortion adjustment

Focus adjustment

Firstly adjust the vertical magnification ratio in the normal (100%) copy mode, then adjust in the zoom copy mode. Never reverse the sequence. The vertical magnification ratio adjustment in the zoom copy mode must be performed when the vertical magnification ratio in the normal (100%) copy mode is proper but the copy size is not proper in the zoom copy mode. The vertical magnification ratio adjustment must be performed in advance to the horizontal copy magnification ratio adjustment. Never reverse the sequence. (The horizontal copy magnification ratio is based on the vertical copy magnification ratio.)

IV. Cases when the adjustment is required

1) When the lens and the mirror unit are disassembled or the

part is replaced.

2) When the scanner unit drive section is disassembled or the

part is replaced.

3) When the main PWB is replaced.

4) When the RAM in the main PWB is replaced.

5) When "U2" trouble occurs.

6) When the position of the lens home position sensor is

changed.

7) When the lens home position sensor is replaced.

8) When the copy image distortion adjustment is performed.

9) When the center position of copy image is adjusted.

10) When the focus is adjusted.

V. Necessary tools

Screwdriver (+)

Scale

VI. Adjustment procedure

(Normal (100%) copy mode: Vertical copy magnification ratio adjustment)

1) Set the scale vertically on the document table. (Use a long scale for precise adjustment.)

Scale

7 – 15

2) Set the copy magnification ratio to 100%.

3) Make a copy on A3 or 11" x 17" paper.

4) Measure the length of the copied scale image.

(When a 100mm scale is used as the original.)

10 20

1/2mm

Paper feed direction

mm 1/2mm

10 20

100 110

JAPAN

120 130

JAPAN

120 130

140

150

HARDDENCD STAINLESS

Shizuoka

HARDDENCD STAINLESS

Shizuoka

Original scale

Reference Comparison point

5) Calculate the vertical copy magnification ratio. Vertical copy magnification ratio =

Copy image size

Original size

6) Check that the actual copy magnification ratio is within the specified range (100 ±0.8%). If it is out of the specified range, perform the following procedures.

7) Execute simulations 48-1. (C → 0 → 0 → C → 48 → CB → 1 → CB) The set vertical copy magnification ratio will be displayed in the COPIES SELECTED display.

8) Enter a new vertical copy magnification ratio with the numeric key and press PRINT button. The above procedure changes the lens home position and the vertical copy magnification ratio. When the copy magnification ratio is set to a larger value, the actual copy magnification ratio becomes larger. When the copy magnification ratio is set to a smaller value, the actual copy magnification ratio becomes smaller.

Repeat procedures 1) to 8) until the vertical copy magnification ratio in the normal (100%) copy mode is within the specified range.

b. Vertical copy magnification ratio adjustment (Zoom

copy)

Scale

x 100 (%)

Copy

110

1) Set a scale vertically on the document table as shown below: (Use a long scale for precise adjustment.)

2) Set the copy magnification ratio to the max. level.

3) Make a copy on A4 or 8 1/2" x 11" paper.

4) Measure the length of the copied scale image.

5) Calculate the vertical copy magnification ratio. Vertical copy magnification ratio =

6) Check that the actual copy magnification ratio is within the specified range (129 ±0.9%). If it is out of the specified range, perform the following procedures.

7) Execute simulations 26-8. (C → 0 → 0 → C → 26 → CB → 8 → CB) The set vertical copy magnification ratio in the zoom copy mode will be displayed in the COPIES SELECTED display.

8) Enter a new vertical copy magnification ratio with the numeric key and press PRINT button. The above procedure changes the lens shift ratio and the vertical copy magnification ratio in the zoom copy mode. When the copy magnification ratio is set to a larger value, the actual copy magnification ratio becomes larger. When the copy magnification ratio is set to a smaller value, the actual copy magnification ratio becomes smaller.

Repeat procedures 1) to 8) until the vertical copy magnification ratio in the zoom copy mode is within the specified range.

VII. Troubles caused by improper adjustment

c. Horizontal copy magnification ratio adjustment (Zoom

copy)

I. Summary

The horizontal copy magnification ratio adjustment must be performed in the document table copy mode. In the document table copy mode, scanning speed is changed with simulations 48-2 to adjust the horizontal copy magnification ratio.

Copy image size

Original size

x 100 (%)

7 – 16

II. Purpose

The purpose of this adjustment is to fit the displayed copy magnification ratio with the actual copy magnification ratio.

III. Note

Before performing this adjustment, the following adjustments must have been completed. If not, this adjustment cannot be performed properly.

Image distortion adjustment

Focus adjustment

Vertical copy magnification adjustment

IV. Cases when the adjustment is required

1) When the lens and the mirror unit are disassembled or the part is replaced.

2) When the scanner unit drive section is disassembled or the part is replaced.

3) When the main PWB is replaced.

4) When the RAM in the main PWB is replaced.

5) When "U2" trouble occurs.

6) When the copy image distortion adjustment is performed.

7) When the center position of copy image is adjusted.

8) When the focus is adjusted.

V. Necessary tools

Screwdriver (+)

Scale

VI. Adjustment procedure

1) Set the scale on the document table as shown below. (Use a long scale for precise adjustment.)

Scale

2) Set the copy magnification ratio to 100%.

3) Make a copy on A3 or 11" x 17" paper.

4) Measure the length of the copied scale image.

mm 1/2mm

10 20

100 110 12 0

Reference Comparison point Copy

5) Calculate the horizontal copy magnification ratio. Horizontal copy magnification ratio =

Copy image size

Original size

x 100 (%)

6) Check that the actual copy magnification ratio is within the specified range (100 ±0.8%). If it is out of the specified range, perform the following procedures.

7) Execute simulations 48-2. (C → 0 → 0 → C → 48 → CB → 2 → CB) The set horizontal copy magnification ratio will be displayed in the COPIES SELECTED display.

110

Original scale

HARDDENCD

JAPAN

130

140

JAPAN

130

140

8) Enter a new horizontal copy magnification ratio with the

Repeat procedures 1) to 8) until the horizontal copy magnification ratio in the normal (100%) copy mode is within the specified range.

VII. Troubles caused by improper adjustment

STAINLESS

150

Shizuoka

HARDDENCD STAINLESS

150

Shizuoka

numeric key and press PRINT button. The above procedure changes the lens home position and the horizontal copy magnification ratio. When the copy magnification ratio is set to a larger value, the actual copy magnification ratio becomes larger. When the copy magnification ratio is set to a smaller value, the actual copy magnification ratio becomes smaller.

Paper feed direction

7 – 17

(7) Uniformity adjustment

I. Summary

The uniformity adjustment is performed by changing the exposure plate position attached to No.1 scanner unit. The above procedure changes the balance of light quantity radiated onto the document.

II. Purpose

The purpose of this adjustment is to have uniform copy density.

III. Note

When this adjustment is performed, the exposure will be changed. Therefore, the copy density adjustment must be performed after this adjustment. Also, this adjustment must be performed always before the copy density adjustment.

IV. Cases when the adjustment is required

1) When the reflector is replaced.

2) When the copy lamp is replaced.

3) When the exposure adjustment plate is disassembled or replaced.

4) In maintenance

V. Necessary tools

Screwdriver (+)

A4 or 8 1/2" x 11" paper

Half-tone paper of A4 or 8 1/2" x 11" or larger

VI. Adjustment procedure

1) Set a half-tone paper of A4 or 8 1/2" x 11" on the document table.

2) Set the exposure level to the min. level in the photo mode, and make a copy on A4 or 8 1/2" x 11" paper.

3) Check the uniformity. If there is any unevenness, perform the following procedures.

4) Move the exposure adjustment plate of the lighter copy section towards Y or move the exposure adjustment plate of the darker copy section towards X.

(Example) If a copy shown below is made, move the front frame side of the sub exposure adjustment plate in the direction of X to adjust the exposure balance.

Less exposure (Dark copy)

Paper exit direction

Half-tone copy

[Fig. 1]

Standard fixing position

Hole (Center)

Exposare adjusting plate

5) Make a copy in the same manner as procedure 2), and check the uniformity. Repeat procedures 1) to 5) until proper uniformity is obtained.

VII. Troubles caused by improper adjustment

(8) Image loss/void area adjustment

The image loss/void area adjustment is performed by the combination of the copied image position adjustment on the copy paper and the void area adjustment. Since the image loss and the void area are closely related each other, they must be adjusted simultaneously. (Definitions of image loss and void area) Void area: Empty (white) area on a copy paper (without toner on it) Image loss: The quantit y (le ng th) of an imag e los t on a cop y pa pe r .

(Document)

(Copy)

Paper lead edge

Li: Lead edge image loss

Lv: Lead edge void area (In some cases, Lv

a. Copy image position adjustment

I. Summary

In order to adjust the copy image position on a copy paper, the lead edge position of an image on the photoconductor for the lead edge position of a document on the document table is changed with simulations 50-1, and the relative position of the paper to the image position on the photoconductor is changed. In the models which have no zoom copy functions, however, the lead edge position of an image on the photoconductor for the lead edge position of a document on the document table is not changed. The relative position of the paper is changed at OFF timing of the scanner home position sensor after starting scanning to adjust the copy image position on the paper. After adjusting the copy image position with the above procedure, the M.C grid OFF timing for the lead edge position of an image on the photoconductor is changed with simulations 45-1 to adjust the void area.

II. Purpose

The purpose of this adjustment is to improve separation in the photoconductor section and in the fuser section and reduce dirt on the fuser section pawl by obtaining the max. effective copy area and the paper void area.

III. Note

If the proper void area is not obtained, the separation ability in the photoconductor section may be degraded and dirt on the fuser section pawl may be increased. Before performing this adjustment, the following adjustments must have been completed. If not, this adjustment cannot be performed properly.

Adjustment of paper pressure against the resist roller

(Sim 51-2 set value must be properly set.)

Lv)

7 – 18

IV. Cases when the adjustment is required

1) When the optical section is disassembled or its part is replaced (including the scanner home position sensor).

2) When the main PWB is replaced.

3) When the RAM in the main PWB is replaced.

4) When "U2" trouble occurs.

5) When the resist roller unit is disassembled or replaced.

6) When the blank lamp is replaced.

V. Necessary tools

Screwdriver

Scale

Test chart

(Copy image position adjustment)

1) Execute simulations 45-1. (C → 0→ 0 → 45 → CB → 1 →

CB) Simulations 45 is to adjust the size of the void area in the lead edge of the copy paper. The set adjustment value is displayed on the COPIES SELECTED display.

2) Set the set value of simulations 45-1 to "0."

Enter "0" with the numeric key and press PRINT button.

3) Execute simulations 50-1. (C → 0 → 0 → C → 50 → CB →

1 → CB) This simulation adjusts the copy image position for the paper. One of the set adjustment values is displayed on the COPIES SELECTED display.

Adjustment value A: Corresponds to the time interval from

the scanner unit starting and the scanner home position sensor OFF to reaching at the lead edge of the document. That is, this is the value used to determine the optical document lead edge reference position, and it must be fit with the edge section of the document reference plate. If this value is improper, when the copy magnification ratio is changed, the copy image lead edge position for the copy paper edge will fluctuate. (Does not exist in the models which have no zoom copy functions.)

Adjustment value B: Corresponds to the time interval from

the scanner unit starting and the scanner home position sensor OFF to the resist roller ON. According to this value, the paper feed timing for the image on the photoconductor drum is changed and the copy image position on the copy paper is also changed. When the set value is changed by "1," the position of the copy image on the copy paper is changed by about

0.123 mm. When the set value is made greater, the copy image position for the copy paper moves backward. When the set value is made greater, the copy image position for the copy paper moves forward.

Use the paper tray select key to select the display of adjustment value A, adjustment value B, and to select the set mode.

Display lamp Display content/set mode

Copier tray cassette paper feed lamp ON.

Copier tray cassette paper feed lamp BLINKS.

4) Set adjustment value A, adjustment value B to "0." Enter "0" with the numeric key and press PRINT button.

5) Press the scale onto the document alignment plate and set it horizontally as shown below:

6) Execute simulations 50-1 to make several copies at each of 129% and 64%.

Scale

7) Measure the distance from the paper lead edge to the copy image lead edge of each copied papers, and calculate the average value.

L1: Average distance (mm) from 129% copied paper lead

edge to the copy image lead edge

L2: Average distance (mm) from 64% copied paper lead

edge to the copy image lead edge

1/2mm

Scale image lead edge

Adjustment value A

Adjustment value B

20 30

7 – 19

Enlargement copy (x 1.54)

30 40

Scale image lead edge

Reduction copy (x 0.64)

8) Enter the measure values in procedure 7) into the formula below to calculate adjustment value A and adjustment value B. A = 8.2423 x (L1 – L2) B = 16.0568 x L2 – 7.9661 x L1

9) Set the adjustment values obtained in procedure 8).

10) Execute simulations 50-1 to make several copies at each of 129% and 64%.

11) Measure the distance from the paper lead edge to the copy image lead edge of each copied papers (129% and 64%), and calculate the average value.

12) Check that the difference between the distance from the copy paper lead edge to the copy image lead edge of 129% copy and that of 64% copy is in the range of 0 ± 1.0 mm. If the difference is out of the above range, change adjustment value A and repeat procedures 10) and 12) until the difference is within the above range. If adjustment value A is improper, the copy image lead edge position fluctuates in proportion to the copy magnification ratio.

10 20 30 40

60 70

Scale image lead edge

Reduction copy (x 0.64)

13) Make a 100% copy, and check that the copy image lead edge is in the range of 0 ±1.5 mm from the paper lead edge position reference. If it is out of the above range, change adjustment value B and repeat procedure 13) until it is within the above range.

Copy scale image

10 20 30

1/2mm

0±1.0mm

Paper lead edge

10 20 30

1/2mm

Scale image lead edge

Enlargement copy (x 1.54)

LA-LB =±1.0mm

7 – 20

b. Void area adjustment

I. Summary

The copy image position on the copy paper is adjusted with simulations 50-1, then the main corona grid ON timing for the image lead edge on the photoconductor is changed with simulations 45 to adjust the lead edge void area. In concrete, in the case of the document table mode, the adjustment is performed by changing the time interval from the scanner motor ON to the main corona grid ON. In the case of the SPF mode, the adjustment is performed by changing the time interval from the SPF resist roller ON to the main corona grid ON. On the other hand, the rear edge void is adjusted by varying the OFF timing of the main corona grid after the PPD detects the rear edge of paper and turns off. There are two kinds of the rear edge void adjustment. One is in the tray paper feed mode, and the other is in the manual paper feed mode. Selection of the adjustment mode is made by the paper feed unit select button and the display lamp.

Mode

Paper

tray

Lead edge void amount adjustment mode Light — Read edge void amount adjustment mode

(Tray feed) Read edge void amount adjustment mode

(Manual paper feed)

Blink —

— Blink

II. Purpose

III. Note

If the proper void area is not obtained, the separation ability in the photoconductor section may be degraded and dirt on the fuser section pawl may be increased. Before performing this adjustment, the following adjustment must have been completed. If not, this adjustment cannot be performed properly.

Adjustment of paper pressure against the resist roller

(Sim 51-2 set value must be properly set.) Adjustment of copy image position (Sim 50-1, A, B)

IV. Cases when the adjustment is required

1) When the optical section is disassembled or its part is replaced (including the scanner home position sensor).

2) When the main PWB is replaced.

3) When the RAM in the main PWB is replaced.

4) When "U2" trouble occurs.

5) When the resist roller unit is disassembled or replaced.

V. Necessary tools

Screwdriver

Scale

Test chart

Manual

Paper feed

unit lamp

VI. Adjustment procedure

(Lead edge void area adjustment)

1) Press the scale onto the document alignment plate and set it horizontally as shown below:

Scale

2) Execute simulations 45-1. (C → 0 → 0 → C → 45 → CB → 1 → CB) Simulations 45-1 is to adjust the size of the void area in the lead edge of the copy paper. The set adjustment value is displayed on the COPIES SELECTED display. Press the paper feed unit select button to light the tray paper feed lamp and set the machine to the lead edge void adjustment mode.

3) Set the adjustment value to "99." Enter "99" with the numeric key, and press PRINT button.

4) With the document cover open, make several copies at 100%.

5) Measure the lead edge void area of each copy.

mm 1/2mm

6) Calculate the average void area.

7) Calculate the void area adjustment value from the formula shown below.

Current set value (99) – = Adjustment value (Decimal point rounded)

8) Set the adjustment value obtained in procedure 7). (Decimal point rounded off)

9) With the document cover open, make several copies at 100%.

10) Measure the copy lead edge void area.

Void area

20 30

Black background edge

Paper lead edge

B4 or "14 x 8½" paper

Copy scale image

current void area (mm)

0.123

7 – 21

11) Measure the distance from the paper lead edge to the copy image lead edge of each copied papers (129% and 64%), and calculate the average value. (Not required for the models without zoom functions.)

12) Check that the void area is within the specified range.

Void area

5) Measure the end edge void area of each copy.

Void area

1/2mm

20 30

mm 1/2mm

20 30

Copy scale image

Black background edge

Paper lead edge

Standard:

–0

If the void area is outside the specified range, change the set value of simulations 45 and repeat procedures 9) to

12). When the set value is changed by "1," the void area is

changed by about 0.123 mm. When the set value is made greater, the void area becomes greater, and vise versa.

(End edge void area adjustment) Tray paper feed mode

1) Set a scale and A4 or 8 1/2" x 11" paper on the document table as shown below:

Black background edge

Paper end edge

6) Calculate the average void area.

7) Calculate the void area adjustment value from the formula shown below.

Current set value (99) –

current void area (mm)

0.123

= Adjustment value (Decimal point rounded)

8) Set the adjustment value obtained in procedure 7). (Decimal point rounded off)

9) With the document cover open, make several copies at 100%.

10) Measure the copy end edge void area.

11) Measure the distance from the paper end edge to the copy image lead edge of each copied papers (129% and 64%), and calculate the average value.

12) Check that the void area is within the specified range.

Void area

Scale

B4 or "14 x 8½" paper

2) Execute simulations 45. (C → 0 → 0 → C → 45 → CB → 1 → CB)

The set adjustment value is displayed on the COPIES SELECTED display. Press the paper feed unit select button to blink the cassette paper feed lamp and to set the machine to the end edge void adjustment mode in the cassette paper feed mode.

3) Set the adjustment value to "99." Enter "99" with the numeric key, and press PRINT button.

4) With the document cover open, make several copies at 100%.

1/2mm

20 30

Black background edge

Paper end edge

Standard: 1 ∼ 3 mm If the void area is outside the specified range, change the

set value of simulations 45 and repeat procedures 9) to

12). When the set value is changed by "1," the void area is

changed by about 0.123 mm. When the set value is made greater, the void area becomes greater, and vise versa.

(End edge void area adjustment) Manual paper feed tray mode

1) Press the paper feed unit select button to blink the manual paper feed lamp and to set the machine to the rear edge void adjustment mode in the manual paper feed mode.

2) Perform the end edge void adjustment in the manual paper feed mode similarly with the end edge void adjustment in the tray paper feed mode.

7 – 22

3. COPY DENSITY ADJUSTMENT

(1) Copy density adjustment timing

The copy density adjustment must be performed in the following cases:

✱ When in maintenance. ✱ When the high voltage unit output current or voltage is adjusted. ✱ When the developing bias voltage is adjusted. ✱ When the copy lamp is replaced. ✱ When the optical section is cleaned. ✱ When an optical part is replaced. ✱ When the optical section is disassembled. ✱ When the photoconductor drum is replaced. ✱ When the developer is replaced. ✱ When the AE sensor is replaced. ✱ When the main control PWB is replaced. ✱ When the EEPROM on the main control PWB is replaced. ✱ When the memory trouble (U2) occurs. ✱ When a part of the copy lamp control circuit is replaced. ✱ When the AC power source PWB is replaced.

(2) Note for copy density adjustment

1) Necessary procedures before ad justment

✱ Clean the optical section. ✱ Clean the AE sensor. ✱ Clean or replace the charger wire. ✱ Check that the high voltage section voltage and the developing

bias voltage are in the specified range.

2) Note

✱ The auto mode copy density adjustment must be performed after

the normal mode copy density adjustment. Never reverse the sequence.

(4) Copy density adjustment mode

The copy density adjustment must be performed in the following five mode:

Exposure

level

Sim No

Original table copy mode

Copy density adjustment mode

Normal mode Non-toner-save mode 1 5 46-1

Toner save mode 1 5 Photo mode Non-toner-save mode 1 5 Auto mode Non-toner-save mode 1 5

Toner save mode 1 5

(5) Copy density adjustment procedure

The copy density is adjusted by using Simulations 46 to change the exposure level and the copy lamp voltage in each copy mode. The copy density adjustment must be performed in the five modes. To select each mode, use the copy mode select key.

A. Test chart (UK0G-0162FCZZ) setting

1) Set the test chart and B4 (14 ″ × 8 1/2″) white paper on the original table as shown below. The sensing area of the AE sensor is about 120 mm wide from the rear frame side edge on the original table glass. Place the white paper on that area, but keep the test chart away from that area.

White paper

Test chart

120mm

(3) Necessary items for the copy density adjustment

✱ Test chart

(Use one of the following three: UKOG-0162FCZZ, UKOG0089CSZZ, KODAK GRAY SCALE)

✱ B4 (14″ × 8 1/2″) white paper

1 10

678

Test chart comparison

UKOG-0162FCZZ DENSITY No.

UKOG-0089CSZZ DENSITY No.

KODAK GRAY SCALE

12345678910W

0.1 0.2 0.3 0.5 1.9 0

123419A

SHARP CORPORATION

MADE IN JAPAN

W234

Front side

2) Close the document cover.

3) Execute Sim 47.

4) Cancel the Sim 47 after off the copy lamp.

B. Normal copy mode (Non-toner-save mode) copy

density adjustment

1) Enter the simulations 46-1 mode.

2) Set the adjustment mode to the normal copy mode (Non-tonersave mode). (Press the copy mode select key to light the normal copy mode lamp.)

Lighting

Copy mode lamp

AUTO MANUAL

PHOTO

Copy mode select key

Copy density display lamp

234

Copy density adjustment key

Copy sheet display

TRAY SELECTEXPOSURE

COPY RATIO

129%

117%

100%

78%

64%

ZOOM

11 10

12x81

7 – 23

3) Set the density level to "1" with the copy density adjustment key.

(The currently set copy lamp voltage level will be displayed on the COPIES SELECTED display.)

Copy mode lamp

Copy density display lamp

Copy sheet display

C. Normal copy mode (Toner save mode) copy density

adjustment

1) Set the adjustment mode to the normal copy mode (Toner save mode). (Press the copy mode select key to light the normal copy mode lamp and the photo copy mode lamp.)

Lighting

AUTO MANUAL PHOTO

Copy mode select ke

234

Copy density ad

ustment ke

TRAY SELECTEXPOSURE

COPY RATIO

129%

12x

117%

100%

78%

64%

11 10

ZOOM

4) Press the print button to make a copy. Check the gray scale copy to insure that "6" is slightly copied and "5" is not copied. When the copy density is too dark, increase the copy lamp voltage level. When the copy density is too light, decrease the copy lamp voltage level. Enter a new set value of the copy lamp voltage level with the numeric keys and press the print button, then the entered value will be set and the copy density will be adjusted according to the set value.

1 10

234567

Slightly copied

Not copied

5) Set the copy density level to "5" with the copy density adjustment key. (The currently set copy lamp voltage level will be displayed on the COPIES SELECTED display.)

Copy mode lamp Copy density display lamp Copy sheet display

Lighting

AUTO MANUAL PHOTO

Copy mode select ke

1234

Copy density

ustment ke

TRAY SELECTEXPOSURE

COPY RATIO

129%

117%

100%

78%

64%

1 1

12x

11 10 14

ZOOM

11 5

Adjust in the same manner as the above copy density adjustment procedures i the normal mode (Non-toner-save mode).

D. Photo copy mode (Non-toner-save mode) copy density

adjustment

There is no toner save mode in the photo copy mode.

1) Set the adjustment mode to the photo copy mode. (Press the copy mode select key to light the photo copy mode lamp.)

Copy mode lamp Copy density display lamp Copy sheet display

Lighting

AUTO MANUAL PHOTO

Copy mode select key

5123

Copy density adjustment key

TRAY SELECTEXPOSURE

COPY RATIO

129%

117%

100%

12x

78%

64%

11 10 14

11 5

ZOOM

Copy mode lamp Copy density display lamp Copy sheet display

Lighting

AUTO MANUAL PHOTO

Copy mode select ke

1234

Copy density ad

ustment ke

TRAY SELECTEXPOSURE

Lighting

COPY RATIO

129%

117%

100%

78%

64%

ZOOM

11 10

12x

11 5

6) Press the print key to make a copy. Check the gray scale copy to insure that "2" is clearly copied and "1" is not copied. When the copy density is too dark, increase the copy lamp voltage level. When the copy density is too light, decrease the copy lamp voltage level. Enter a new set value of the copy lamp voltage level with the numeric keys and press the print button, then the entered value will be set and the copy density will be adjusted according to the set value.

1 10

Not copied

Copied

Check the gray scale copy to insure that "7" is slightly copied and "6" is not copied. When the copy density is too dark, increase the copy lamp voltage

level. When the copy density is too light, decrease the copy lamp voltage level. Enter a new set value of the copy lamp voltage level with the numeric keys and press the print button, then the entered value will be set and the copy density will be adjusted according to the set value.

1 10

234567

Slightly copied

Not copied

E. Auto copy mode (Non-toner-save mode) copy density

adjustment

1) Set the adjustment mode to the auto copy mode (Non-toner-save mode). (Press the copy mode select key to light the auto copy

mode lamp.)

7 – 24

Copy mode lamp Copy density display lamp Copy sheet display

120mm

White paper

Test char t

Front side

Lighting

AUTO MANUAL PHOTO

234

TRAY SELECTEXPOSURE

COPY RATIO

129%

117%

100%

78%

64%

12x

11 10 14

11 5

F. Auto copy mode (Toner save mode) copy density

adjustment

1) Set the adjustment mode to the auto copy mode (Toner save mode).

ZOOM

(Press the copy mode select key to light the auto copy mode lamp and the photo copy mode lamp.)

Copy mode select ke

Copy density ad

ustment ke

2) Set the density level to "1" with the copy density adjustment key. (The currently set copy lamp voltage level will be displayed on the COPIES SELECTED display.)

Copy mode lamp Copy density display lamp Copy sheet display

Lighting

AUTO MANUAL PHOTO

Copy mode select ke

234

Copy density ad

ustment ke

TRAY SELECTEXPOSU RE

COPY RATIO

129%

117%

100%

12x

78%

64%

11 10 14

14 11 5

ZOOM

3) Set the copy lamp voltage level set value to "0." Enter the new set value with the numeric key and press the print button, then the entered value will be set. (Be sure to set to "0.")

4) Set the copy density level to "5" with the copy density adjustment key. (The currently set copy lamp voltage level will be displayed on the COPIES SELECTED display.)

Copy mode lamp Copy density display lamp Copy sheet display

Lighting

AUTO MANUAL PHOTO

TRAY SELECTEXPOSURE

51234

COPY RATIO

129%

117%

100%

78%

64%

1 1

12x 1

11 10 14

ZOOM

Copy mode lamp Copy density display lamp Copy sheet display

Lighting

AUTO MANUAL PHOTO

Copy mode select key

51234

Copy density adjustment key

TRAY SELECTEXPOSURE

Lighting

COPY RATIO

129%

12x

117%

100%

12x

78%

64%

ZOOM

11 10

11 5

5) Press the print button to make a copy. Check the gray scale copy to insure that "3" is slightly copied and "1" is not copied. When the copy density is too dark, increase the copy lamp voltage level. When the copy density is too light, decrease the copy lamp voltage level. Enter a new set value of the copy lamp voltage level with the numeric keys and press the print button, then the entered value will be set and the copy density will be adjusted according to the set value.

1 10

678

Slightly copied

Not copied

Copy mode select ke

Copy density ad

ustment ke

Adjust the copy density in the same manner as the Photo copy mode

W234

(Non-toner-save mode) copy density adjustment.

7 – 25

A : Auto copy mode N.TS : Non-toner-save mode

(6) Copy density adjustment table

P : Photo copy mode TS : Toner save mode N : Normal copy mode

Copy mode Mode display Density level Test chart copy density

1 10 W2

N.TS N

Not copied

1 10

Normal

Not copied

1 10

Copied

TS N & P

Not copied

1 10

Copied

Not copied

1 10

Slightly copied

Photo N.TS P

N.TS A

Auto

TS A & P

Slightly copied

Not copied

1 10

Not copied

Copied

234

56789

10 W

Slightly co pie d

Not copied

1 10

3456789

Slightly co pie d

Not copied

7 – 26

4. Others

(1) Transfer charger wire installation

Install the transfer charger wire as shown below. (Clean the charger wire at every 40K copies and replace it at every 80K copies.) Transfer charger unit (TC unit)

10 0.5

(Note for replacement of the charger wire)

a Do not twist or deform the charger wire.

b After replacement, be sure to clean the charger wire with alcohol.

(Be sure to use alcohol only.)

c After wiping with alcohol, wipe with a dry cloth. d Use charger wire of 70µ (DWIR-0466CSZZ).

Cut the wire at the

Tension spring

2~3mm

root of the screw

Wind two turns and tight en t he sc rew

(2) How to adjust the separation corona voltage

1) Install the developer unit and OPC drum unit into the main body.

2) Set the hight voltage probe (1000:1) to digital multimeter.

3) Set the digital multimeter range to DC V.

4) Connect the digital multimeter to the SHVG check pin on the lower unit control PWB and chassis GND.

5) Execute simulation 8-7 and adjust the separation corona voltage to 3.5 ± 0.35v by rotates VR1 on the lower unit control PWB. (SHVG turns on 30 sec)

(3) How to adjust the developing bias voltage

1) Install the developer unit and OPC drum unit into the main body.

2) Set the digital multimeter range to DC 500V.

3) Connect the digital multimeter to the developing bias output terminal on the lower unit control PWB and chassis GND.

4) Execute simulation 8-1 and adjust the developing bias voltage to –200 ± 3v by rotates VR2 on the lower unit control PWB. (Developing bias turns on 30sec)

Charger wire

Improper

Charger wire

Improper

CORONA VOLTAGE IN THE EACH COPY MODE

MAIN CORONA UNIT

COPY MODE

N.T.S NORMAL –5.3Kv 780 –5.3Kv +2.7Kv

AE –5.3Kv 780 –5.3Kv +2.7Kv PHOTO –5.3Kv 478 –5.3Kv +2.7Kv

T.S NORMAL –5.3Kv 660 –5.3Kv +2.7Kv

AE –5.3Kv 660 –5.3Kv +2.7Kv

MAIN CORONA VOLTAGE

(V)

MAIN CORONA GRID

VOLTAGE (V)

TRANSFER CORONA

VOLTAGE (V)

SEPAREATION CORONA

VOLTAGE (V)

7 – 27

[8] SIMULATIONS

1. Outline

This model is equipped with the simulations feature which allows the following operations with the keys on the operation panel:

1) Adjustments

2) Setting of sp ec if ic at ions and functions

3) Resetting trouble codes

4) Checking operations

2. Purpose

The purpose of the simulations feature is to improve serviceability in repairs and adjustments. Since the mechanical adjustments can be performed electrically, the above purpose is achieved with low costs.

3. Opera tin g pr oc edu r e

Simulations operating procedure

Start

Press the cle a r ke y

Press the zero key

Press the cle a r ke y

All l a mps and indicators on the operation panel go off. Ready for entry of the main test command number

Enter the main test command number with numeric keys

The s et adjus tment v alue or the counter value is displayed on the copy quantity display

To change t he set adjustment value or the counter value, enter a new value with numeric keys

The entered value is displa yed on the copy quantity display

Press the print key

The new set value is stored

Is there a su b co de ?

Press the prin t key

Is the test

command for operati on check?

Operat i o ns acc or ding to th e sim u l at ions are perfor med

Do you perform anot he r simulations?

Press the cle a r ke y

YES

Press the print ke y

"00" blinks on the copy quantity display. Ready fo r entry of the s ub code.

Enter the sub code with numeric keys

Press the print key

YES

Is the main code same?

The main sim ulations number i s displayed o n the copy quantity display

Is the sub code display?

Enter a new m ain code

The main code is display on the copy quantity display

YES

Press the clear key

All the lamps and indicators on the operation panel go off. Ready for entry of the main simulations number

Press the cle a r ke y

End

8 – 1

4. Purpose list

Purpose Section Main Sub Function

Adjustments Paper feed section 51 2 Resist amount adjustment

Optical section 26 8 Copy magnification ratio adjustment (zooming)

45 1 Lead edge void amount setting 46 1 Copy density (exposure level) adjustment 8-4 47 AE sensor characteristics value data auto input 48 1 Front-rear direction magnification ratio adjustment (Vertical direction)

2 Paper transport direction magnification ratio adjustment (Horizontal direction)

50 1 Lead edge image position adjustment

Developer 8 1 Developing bias voltage check

25 2 Auto developer adjustment

Process 8 2 MC/TC output check (Normal mode)

3 MC/TC output check (Photo mode) 4 MC/TC output check (Toner save mode) 7 Separation charger (SC) 9 MC/TC/SC output check

SPF 48 4 Exposure correction in enlargement copy of 120% or more 8-5

51 2 Resist quantity adjustment 8-3

Setting Specifications 26 6 Destination setting

30 CE standards setting Paper feed section 26 12 Manual copy mode setting Fuser section 26 13 Main motor operation mode setting at warming up

43 1 Fuser temperature setting

2 Fuser temperature setting (in power save)

Process 44 1 Correction mode setting

Counter Maintenance

Operation check

Trouble cancel

counter

Drum counter 24 7 Counter value reset

Developer counter 42 1 Counter value reset

Total counter 0 Key

General (Aging mode)

Paper feed section 30 1 Main body sensor operation check

Optical section 1 1 Mirror base scan operation check

Operation panel 5 1 LED lighting check Fuser section 5 2 Heater lamp lighting check Process 5 4 Discharge lamp lighting check

Developer section 10 Toner motor auto operation check

20 1 Counter value reset 21 1 Maintenance cycle setting 22 2 Maintenance cycle display 22 1 Counter value display

22 12 Counter value display

22 6 Counter value display

Counter value display

(Does not enter the

simulation mode.)

7 1 Warm-up time display and aging

4 Omitting warm-up 6 Intermittent operation aging

2 Option tray sensor operation check

2 Optical system sensor operation check 3 Lens operation check 4 Lens operation aging

5 3 Copy lamp lighting operation

5 Blank lamp lighting check

6 2 Separation pawl auto operation check

44 2 Optical system dirt correction reference value display

3 Optical system dirt correction voltage correction value display 4 Photoconductor drum rotation time display

25 1 Toner density sensor operation check/toner density monitor 14 Cancel of troubles other than U2 16 U2 trouble cancel

Ref.

page

8-3

8-5

8-6

8-7

8-8

8-9

—

8-12

8-9

8-10

8-11

8 – 2

5. Details of simulations

PPD

TRC

(SPPD)

(SPFC)

Purpose/kind Section Main

Adjustment Paper feed

section

Optical unit 26 8 Used to adjust the copy magnification ratio in zoom copy.

Contents

code

Sub

code

Description

51 2 Used to adjust contact pressure between paper and the main body resist

roller. (Amount of paper buckle at the resist roller) Change the set value when the shift between the paper and the image varies.

(Operation/procedure) When the simulation key operation is performed, the currently set value is displayed on the COPIES SELECTED display. Enter the set value with the numeral key and press the print button, and the entered set value will be stored in the main PWB RAM. The standard set value is 25. Tray paper feed mode: Tray paper feed lamp ON Manual paper feed mode: Manual paper feed lamp ON The set value corresponds to the time interval between when the paper detector (PPD/SPPD) in front of the main body resist roller detects paper and when the transport roller (TRC/SPFC) turns off. The greater this time interval is, the greater the contact pressure between the paper and the resist roller is.

@ The time interval can be set. The

greater the time interval is, the greater the contact pressure between the paper and the resist roller is. If the contact pressure is too great, a paper jam may occur. If the contact pressure is too small, variations of image position for the copy paper becomes greater. This must be adjusted according to the paper quality.

The lens shift amount in zoom copy is changed to provide suitable magnification ratio. There is a slight variation in each lens focal distance. If the lenses are shifted in a same amount in zoom copy, suitable magnification ratio may not be obtained. To correct this, therefore, each lens is shifted according to its focal distance. The lens must be shifted in accordance with its focal distance in zoom copy,

(Operation/Procedure) When the simulation key operation is performed, the currently set lens number is displayed. Enter the lens number with the ready lamp ON and press the print button, and the entered number will be stored in the main PWB RAM. The lens number is in proportion to the lens focal distance.

45 1 Used to adjust the copy paper lead edge void and the rear edge void amount.

(Operation/procedure) When the simulation key operation is performed, warming-up operation is performed. After completion of warming up, the currently set void amount is displayed on the COPIES MADE display. Use the tray select key to select between the lead edge void amount adjustment and the rear edge void amount adjustment mode. The upper tray lamp will change as shown in the table below.

Mode

Lead edge void amount adjustment mode

Read edge void amount adjustment mode (Paper tray)

Read edge void amount adjustment mode (Manual Paper feed)

Paper cassette

lamp Light —

Blink —

— Blink

Manual Paper

feed lamp

Enter the set value with the numeral keys and press the PRINT button, and the set value will be stored. The standard set value is 50. The void area increases 0.123mm for an increase of the set value by 1.

Ref. page

7-16

7-19

8 – 3

Contents

12345

MAX 85V (170V)

MIN 40V (80V)

Great

Exposure

Small

Light

Copy density

Dark

Copy lamp application voltage

( ): 200V system Density display level in the operation panel

Purpose/kind Section Main

code

Sub

code

Description

Adjustment Optical unit 46 1 Used to adjust the copy density (exposure level) and the copy density gradient

(exposure gradient) in each copy mode. The exposure level is changed by changing the copy lamp applying voltage. The adjustment points are exposure levels "1" and "5" in each copy mode. The copy density (exposure level) and the copy density gradient (exposure gradient) can be adjusted arbitrarily.

(Operation/procedure) When the simulation key operation is performed, the currently set exposure level will be displayed on the COPIES SELECTED display. Select exposure level "1" or "5" with the copy density adjustment key, and enter the set value with the numeral keys and press the print button. Then the set value is stored. To select each copy mode, use the copy mode key.

Exposure

level

Sim No

Original table copy mode

Copy density adjustment mode

Normal mode Non-toner-save mode 1 5 46-1

Toner save mode 1 5 Photo mode Non-toner-save mode 1 5 Auto mode Non-toner-save mode 1 5

Toner save mode 1 5

Copy density level (exposure level (copy lamp applying voltage) to operation panel density display level)

Ref. page

7-26

In the manual copy mode and the photo copy mode Set point A (exposure level (copy lamp applying voltage) at copy density level "1") and point B (exposure level (copy lamp applying voltage) at copy density level "5"), and the exposure gradient (copy density gradient) and the exposure level (copy density level) will be set. A – B characteristic: A great exposure gradient ( copy density gradient ). A′ – B′ character istic: A small exposure gr adient (copy density gradient) . Point A and point B can be set arbitrarily.

8 – 4

Contents

[V] 80(160) 50(100)

[V]

AE sensor output level (AE sensor light receotion amount)

Copy lamp application voltage to AE sensor output characteristics (When simulation 47 is performed)

Copy lamp application voltage (Exposure amount)

Copy lamp application voltage

AE sensor output to copy lamp application voltage characteristics (AE copy mode)

AE sensor output level (Document density)

Dark Light

Purpose/kind Section Main

code

Sub

code

Description

Adjustment Optical unit 47 Used to store the characteristics of the AE sensor and the optical section for

the change in the copy lamp applying voltage. The exposure level in the auto copy mode is automatically determined by the stored data and the document density. This simulation is used to correct the output characteristics of the AE sensor output characteristics, which differ in different machines.

(Operation/procedure) When the simulation key operation is performed, the scanner unit performs initializing and feeds about 10cm and stops. When the print button is pressed again, the copy lamp applying voltage changes from 80V (160V) to 50V (100V) by the increment of 5V. The AE sensor output characteristics at that time are stored in the main PWB RAM. At that time, the AE sensor gain is automatically adjusted. This operation must be performed before the copy density adjustment in the auto copy mode.

48 1 Used to adjust the vertical (Machine front to rear) copy magnification ratio.

The adjustment is performed by changing the lens home position arbitrarily. (Operation/procedure)

When the simulation key operation is performed, the currently set value is displayed on the COPIES SELECTED display. Enter the adjustment value with the numeric key and press the print button, and the value will be stored in the main PWB RAM. It is required to make a copy and adjust. However, the rough input value can be obtained from the following formula: Input value = Current set value + Magnification ratio correction rate × 10

2 Used to adjust the horizontal magnification ratio.(Lead to Trail)

The adjustment is performed by changing the scanning speed of the scanner (mirror motor). (Operation/procedure) When the simulation key operation is performed, the currently set value is displayed on the COPIES SELECTED display. Enter the adjustment value with the numeric key and press the print button, and the value will be stored in the main PWB RAM. It is required to make a copy and adjust. However, the rough input value can be obtained from the following formula: Input value = Currently set value + copy magnification ratio x 10 Copy magnification ratio = (Document length – Copy image length) ÷ Document length x 100 [%]

4 Exposure correction in enlargement copy of 120% or more

Exposure correction voltage in enlargement copy of 120% or more V = V + N * 0.3V Nor m al N = 0 V: Reference copy lamp voltage v: Voltage after exposure correction

Ref. page

7-26

7-15

7-16

8 – 5

Contents

RRC ON

Mirror unit scan st art

Reaching the docu men t le ad edge position

Purpose/kind Section Main

code

Adjustment Optical unit 50 1 Used to adjust the copy image position on the copy paper. 7-19

Sub

code

(Operation/procedure) The adjustment is performed by changing the three set values A, B. The zoom machine has two set values, the SPF machine three, but the normal machine only one. When the simulation key operation is performed, warming-up is performed and the ready lamp is lighted. Then the currently set value is displayed on the COPIES SELECTED display. In the case of the zoom machine, there are three set values. Every time when the tray select key is pressed, set values A, B is displayed in turn. In this case, the pause lamp status allows monitoring the three set values.

Display lamp Set value

Copier tray cassette paper feed lamp BLINKS.

Tray cassette paper feed lamp ON A

Set all three set values A, B to "0", make copies at 64% and 129% and measure the shift between the copy paper lead edge and the copy image. Put the measure values into the following formulas to obtain the rough values of A and B. L1 = Shift between 129% copy paper lead edge and copy image (mm) L2 = Shift between 64% copy paper lead edge and copy image (mm) A = 8.2423 x (L1 – L2) It corresponds to the time required for the scanner to reach the document lead edge image position from starting scanning. It is, in other word, the value used to determine the optical position of the document lead edge reference position of the document table, and must be fitted to the edge section of the document reference plate. If this value is not proper, the distance between the copy image lead edge and the purpose edge is varied when the copy magnification ration is varied. B = 16.0568 x L2 – 7.9661 x L1 (Only in the zoom model) It corresponds to the timer required for the resist roller (RRC) to turn on from when the scanner started scanning and reached the optical document lead edge reference position. This set value is used to determine the paper feed timing for the image position on the OPC drum, and the relationship between the paper and the image is changed. C = 8.0906 x L3 (timer value) (Only in the SPF machines) This set value is used to change the paper feed timing for the scanning start timing (the image position on the OPC drum), and to change the relationship between the paper and the image position.

Description

B (Only in the zoom machine).

Ref. page

In the non zoom model only set value "A"

Developer unit 8 1 Used to check the developing bias voltage.

(Operation/procedure) The developing bias voltage is outputted for 30 sec.

25 2 Used for initial setting of toner density when replacing developer. 4-5

8 – 6

7-30

Contents

3min

8sec

DV.Bias

M.M

500msec

Purpose/kind Section Main

code

Sub

code

Adjustment Developer unit 25 2 (Operation/procedure)

After 3 minutes from start of stirring of the DV unit after the main motor rotation, toner density is sampled 16 times during 8 sec, and the average value is stored as the toner density reference value in the RAM. With this reference value as the threshold value, the toner density is controlled.

(Note) Do not perform this simulation except for when replacing the developer with a new one. If this simulation is performed in the other case, overtoning or undertoning may occur, resulting in a poor copy quality.

Process 8 2 Used to check the voltage of the main charger and the transfer charger in the

manual and auto copy mode. The main charger and the transfer charger unit are turned on for 30 sec in the

manual and auto copy mode.

3 Used to check the voltage of the main charger and the transfer charger in the

photo copy mode. The main charger and the transfer charger unit are turned on for 30 sec in the

photo copy mode.

4 Used to check the voltage of the main charger and the transfer charger in the

manual and auto copy mode.. The main charger and the transfer charger unit are turned on for 30 sec in the

toner save mode. (manual and auto copy mode)

7 Used to check the separation charger voltage. 7-30

The separation charger unit is turned on for 30 sec.

9 Used to check the voltage of the main charger, the transfer charger, and the

separation charger. The main charger unit, the transfer charger unit, and the separation charger

unit are turned ON for 30 sec.

Setting Specifications 26 6 Used to set the destination.

(Operation/procedure) When the simulation key operation is performed, the code number of the currently set destination is displayed. Enter the code number corresponding to the desired destination and press the print button, and the specifications for the destination will be set.

Code No. Destination

00 Japan 01 SEC 02 SECL 03 SEEG 04 SUK 05 SCA 06 Other inch series 07 Other AB series 08 LAG

Description

Ref. page

4-5

Grid voltage

–750±10V

Grid voltage –459.9±10V

Grid voltage –634.4±10V

30 Setting for CE standards

After pressing the print switch, the currently set code is displayed. Enter the following set code with the 10-key pad and press the print switch. 0: non CE 1: CE (Set to 1 for the areas of 200V/50Hz.

1: CE (Set to 0 for the areas of 100V/60Hz.)

8 – 7

Contents

Purpose/kind Section Main

code

Setting Paper feed unit 26 12 Used to set the manual paper feed mode.

Fuser unit 26 13 Used to set the operation mode of the main motor in warming up.

Sub

code

There are two operation modes: auto and manual. Either of the two can be set.

(Operation/procedure) When the simulation key operation is performed, the code number of the currently set operation mode is displayed. Enter the code number corresponding to the desired operation mode and press the print button, and the operation mode will be set.

Code number Operation mode Operation

1 Manual

0 Auto

There are two operation modes: auto and manual. Either of the two can be set.

Code number Operation mode Operation

0 Normal mode

1 Long mode

Description

Ref. page

When the print button is pressed, copying is started.

When copy paper is set, coping is automatically started.

The main motor rotates until the process cleaning is completed.

The main motor keeps rotating until completion of warming up.

43 1 Used to set the fusing temperature.

(Operation/procedure) When the simulation key operation is performed, the lower two digits of the currently set temperature is displayed on the COPIES SELECTED display. (Example: 75 ——— 175 °C) Pressing the paper select key under that state allows selection of fusing temperature by the increment of 5 °C. To set the temperature, press the print button. (Standard set value: 85 ——— 185°C)

2 Used to set the fusing temperature in the power save mode.

(Operation/procedure) When the simulation key operation is performed, the lower two digits of the currently set temperature is displayed on the COPIES SELECTED display. Pressing the paper select key under that state allows selection of fusing temperature by the increment of 5 °C. To set the temperature, press the print button. *00 → 05 → 10 → 85 → 90 → 95 *: Standard set value

Process 44 1 Used to set the correction modes.

(Operation/procedure) When the simulation key operation is performed, the code number of the currently set mode is displayed on the COPIES SELECTED display. Enter the code number corresponding to the desired correction mode and press the print button, and the mode will be set.

Code Correction mode

2 Optical system dirt correction enable 4 Photoconductor drum membrane wear correction enable

10 Toner correction control

Set the total of codes of above modes. Factory setting is "16."

8 – 8

Contents

Purpose/kind Section Main

code

Counter Copy count 22 1 Used to check the maintenance count value.

Maintenance 20 1 Used to reset the maintenance counter.

Drum count 24 7 Drum count data is reset.

Developer count

Operation check

Paper feed unit 30 1 Used to check the operations of the sensors and detectors in the paper feed

Sub

code

(Operation/procedure) The maintenance count value is displayed dividedly by two digits three times on the COPIES SELECTED display. There is a pause between any two displays. After the longest pause, the top two digits are displayed.

2 Used to check the set maintenance cycle (maintenance preset counter).

21 1 Used to set the maintenance cycle.

(Operation/procedure) After performing the simulation key operation, enter the code number corresponding to the desired maintenance cycle listed below.

Code

No.

Set to "4" when shipping.

22 12 Used to check the drum counter value inside the installed OPC drum unit. 42 1 Used to reset the developer count value.

22 6 Used to display the developer count value.

section, and their related circuits. The operations of the sensors and the detector in the paper feed section can be monitored by the lamps on the operation panel.

(Operation/procedure) ON/OFF of the sensors and detectors in the paper feed section can be monitored with the lamps on the operation panel.

Paper size detector (PWD) Toner empty lamp Resist detector (PPD) Jam lamp Paper exit detector (POD) OPC drum lamp Tray open/close detector (PED1) No.1 paper feed cassette lamp Manual paper feed detector (PID) Manual paper feed lamp

Maintenance lamp ON cycle Photoconductor lamp ON cycle

1 Every 10,000 copies Every 40,000 copies 2 Every 20,000 copies Every 40,000 copies 3 Every 40,000 copies Every 40,000 copies 4 Lamp not ON Lamp not ON

Sensor name Display lamp

Description

Ref. page

3-4

2 Used to check the operations of the sensors and detectors in the option tray

and their related circuits. The operations of the sensors and detectors in the option tray can be monitored with the display lamps on the operation panel.

(Operation/procedure) ON/OFF of the sensors and detectors in the option tray can be monitored with the lamps on the operation panel. The operations of the sensors and detectors in the option tray can be monitored with the lamps on the operation panel. Used to check the operations of the sensors.

Sensor name Display lamp Option tray cover open/close detector (CSDSW) Toner empty lamp Option tray paper feed sensor (CSPPD) Jam lamp Option tray open/close detector (CPED2) Upper tray lamp Option tray detector (OCSD) Lower tray lamp

8 – 9

Purpose/kind Section Main

1sec

4sec

EXP1~5 voltage

CLV

Full power

code

Operation

Optical unit 1 1 Used to check the operation of the scanner unit and its control circuit.

check

5 3 Used to check the operation of the copy lamp and its control circuit.

Contents

Sub

code

Description

(Operation/procedure) When the print button is pressed, scanning is performed at the speed corresponding to the currently set copy magnification ratio. The copy magnification ratio can be set arbitrarily.

2 Used to check the operations of the sensors and detectors in the optical unit

and their related circuits. (Operation/procedure)

ON/OFF of the sensors and detectors in the optical unit can be monitored with the lamps on the operation panel.

Sensor name Display lamp Mirror home position sensor (MHPS) OPC drum lamp Lens home position sensor (LHPS) Toner empty lamp

3 Used to check the operation of the lens unit and its control circuit.

(Operation/procedure) The lens unit moves to each position of the following copy magnification ratios continuously, and stops at each position for about 0.5 sec. The copy magnification ratio corresponding to each stop position of the lens is displayed on the operation panel. 10% → Reduction 1 → Reduction 2 → Enlargement 1 → Enlargement 2 → 100%

4 Used to check the operation of the optical unit and its control circuit.

(Operation/procedure) The operation of simulation 1-3 is repeatedly performed.

(Operation/procedure) The copy lamp lights up for first one sec at full power, and lights for 4 sec at the currently set exposer level (copy density).

Ref. page

3-4

Operation unit 5 1 Used to check the operations of the lamps on the operations panel and their

control circuits. (Operation/procedure)

All display lamps on the operation panel turns on for 5 sec.

Fuser unit 5 2 Used to check the operation of the heater lamp and its control circuit.

(Operation/procedure) The heater lamp turns on for 500ms, and off for 500ms five times repeatedly.

Process 5 4 Used to check the operation of the discharge lamp and its control circuit.

(Operation/procedure) The discharge lamp lights up for 30 sec.

5 Used to check the operation of the blank lamp and its control circuit.

(Operation/procedure) The blank lamps lights up sequentially from the rear frame side to the front frame side, and all the lamps light up for 10 sec.

Operation check

6 2 Used to check the operation of the OPC separation pawl solenoid and its

control circuit. (Operation/procedure)

The OPC separation pawl solenoid repeats 0.5 sec ON and 0.5 sec OFF twenty times.

8 – 10

Purpose/kind Section Main

code

Operation check

Trouble code resets

Process 44 2 Used to display the reference value of the optical system dirt correction.

Developer unit 10 Used to check the operation of the toner motor and its control circuit.

25 1 Used to check the operation of the sections other than the optical unit and to

Gereral (Aging mode)

7 1 Warm-up time display and aging

14 Used to cancel troubles other than self diag U2 trouble code.

16 Used to cancel the self diag U2 trouble code.

Contents

Sub

code

This value affects the process correction system. For details, refer to the descriptions on the process correction system.

3 Used to display the reference value of the optical system dirt correction. 5-13

(Operation/procedure) When the simulation key operation is performed, the current correction amount is displayed in hexadecimal number on the COPIES SELECTED display. The decimal number converted from the hexadecimal number shows the actually corrected copy lamp voltage. Example --- 1d] : 2.9V correction

4 Used to display rotating time of the photoconductor drum.

This value affects the process correction system. For details, refer to the descriptions on the process correction system.

(Operation/procedure) When the simulation key operation is performed, the current rotating time of the photoconductor drum is displayed in the unit of minute on the COPIES SELECTED display.

(Operation/procedure) The toner motor turns on for 30 sec.

check the operation of the toner density sensor. (Operation/procedure)

The main motor rotates and the units connected to the main motor operate accordingly. The output level of the toner density sensor is displayed on the COPIES SELECTED display.

When this simulation is executed, warm-up is started, and the warm-up time is counted every second and displayed on the copy quantity display. At completion of warm-up, counting is stopped and RPL is lighted. Press CA key to clear the warm-up time display, set the desired copy quantity and press the PRINT button, and copying will be performed to make the set quantity of copies.

4 Omitting warm-up

When this simulation is executed, the machine goes into the ready state (RPL on).

6 Intermittent aging

When this simulation is executed, warm-up is started. After completion of warm-up, set the copy quantity and press the PRINT button, and copying will be performed to make the set quantity of copies.

(Operation/procedure) After cancellation of the trouble code, the simulation is also automatically cancelled.

Description

Ref. page

5-5

5-13

5-12

8 – 11

6. User simulation

[Specifications which does not conform to International EnergyStar]

A) Preheat mode (The machine enters this mode after passing a

certain time from completion of the final operation.)

• The fusing section temperature is lower than the normal ready

state.

• The fan speed is reduced. (Patent avoidance)

• The energy-saving lamp is turned on and the other display lamps

are also turned on. (Including the ready lamp.)

• Preheat is terminated when any operation is made (key input,

cassette loading, original setting, or other operation which the machine can detect). The energy-saving lamp blinks. At the same time, the fusing section temperature rises to the copy ready level within 10 sec.

B) Auto power shut off mode (The energy-saving effect is greater

than the preheat mode. The machine enters this mode after passing a certain time from completion of copying. When, however, the machine is temporarily stopped by paper jam, paper empty, toner empty (with the toner supply lamp ON), etc., the machine does not enter this mode.)

• Power supply is stopped only to the fusing section.

• The fan speed is reduced. (Patent avoidance)

• The energy-saving lamp is turned on, and the other lamps are

turned off.

• When the print button is pressed, the auto power shut off is ter-

minated and the energy-saving lamp blinks. At the same time, the fusing section temperature rises to the copy ready level within 10 sec.

• The time from completion of the auto off mode to turning off of the

energy-saving lamp after returning to the ready state is the same as the max. warm-up time after turning on the power.

Time required to enter the preheat mode or auto off mode and

cancellation of the mode can be set by the user program. (For details, refer to the descriptions on the user program.)

Energy-saving mode Auto start from D, E

Machine state A. Warmup B. Ready C. Copying

Operation panel ON

Energy-saving LED

Ready lamp ON

Power switch ON ON ON ON ON ON ON

@1: When the copy button is pressed during preheating, the machine enters the state of "G. Reserved."

Blink

OFF

D. Preheating

(@1)

E.Auto power shut off mode

OFF

F. Resetting

Blink Blink

G. Reversed

(Reset)

OFF

Auto start function

Even during warming up or during resetting after completion of energy-saving mode, copy condition can be set and copy reservation can be accepted. When reservation is made, copying is started when the fusing temperature of the machine reaches the specified level. When copy reservation is made, the copy conditions cannot be changed until the reservation is canceled with the clear key.

8 – 12

(2) User simulation prcedure

Paper jam/

Simulation procedure State

1. Pres s the paper feed section select key for more than 5 sec.

2. Enter a code number with 10 key. Simulation code selection.

3. Press the COPY button. Simulation code determined.

4. Enter the selection code with 10 key. Simulation code menu selection.

5. Press the COPY button. Simulation code menu determined.

6. Pres s the paper feed section select key.

User simulation input allowed.

Escape from user simulation.

developer

replacement/

toner supply

warning LED

Blink OFF

Blink ON

Blink OFF

OFF

Copy quantity

display

Returns to copy quantity display.

Print LED

• When this key is pressed during user

simulation selection, the mode returns to state 1 (user simulation input allowed.)

* Press the clear key.

(Use this key to correct mistyping of input.) Blink OFF

• After completion of program setting, when

this key is pressed, the mode the following program input can be made.

( : Blink)

—

(3) User program code table

[ES conforming area]

1

2

3

4

5

Selection code:

0: NO 1: 30 sec. 2: 60 sec. 3: 90 sec. 4: 120 sec.

1: 30 min. 2: 60 min. 3: 90 min. 4: 120 min. 5: 240 min.

0: NO 1: YES

Program

Auto clear passing time setting

Preheat mode setting and passing time setting

Auto off mode passing time setting

Stream feeding mode setting and cancel (Only models with SPF)

Auto power shut off mode setting, cancel

code

Set content

Factory setting

2: 60 sec.

0: N O

Since P code [5] is set to "[0]: NO," this setting is set to [0] though there is no selection code specified.

0: NO

When auto power shut off mode passing time setting (operation

with P code [3]) is made under the state where the auto power shut off mode is canceled ("[0]: NO" is selected with P code [5]), the machine enters the auto power shut off mode set conditions without operation with program [5].

8 – 13

[9] SELF DIAG

1. Summary/purpose

This model has the self diag function for the following purposes:

1) When a trouble occurs in the machine, the machine detects the trouble and displays the trouble content on the copy quantity display to alert the customer and the serviceman.

2) When any abnormality is detected, the power supply line is cut off immediately for safety and to protect the machine from damage.

2. Operation

The self diag content is displayed in the following procedure.

A trouble occurs

The abnormalality is detected by sensors and detectors

The main trouble code is displayed on the copy quantity display

YES

Is there

sub code?

Check the trouble position (Use the suitable simulation)

Repair

Turn off/on the power or cancel the self diag with simulation 14 or 16

Press the print key

The sub trouble code is displayed on the copy quantity display

3. Clearing the self diag display

After repairing the trouble section, clear the self diag display according to the table below: Clearing the self diag display

Self diag display Display clearing procedure

L1, L3, L4, L5, L8 Turn off/on the power.

H3, H4 Execute simulation 14.

U2 Execute simulation 16.

CH, PC

When the trouble is cancelled,, the display is cleared.

9 – 1

4. Self diag contents

Error code

Main Sub

L1 0 Content Scanner feed trouble 8-10

L3 0 Content Scanner return trouble 8-10

L4 1 Content Main motor lock trouble

Item Description Ref. page

Detail 1) 86 pulses (45 mm) of the scanner motor drive pulse have been outputted after the

scanner unit started scanning, but the scanner home position sensor (MHPS) does not turn off.

2) The scanner unit is not at its home position (MHPS does not turn on) when the scanner unit starts scanning.

3) The scanner home position sensor (MHPS) does not turn on when the scanner performs the initial operation.

Cause 1) Scanner motor trouble

2) Scanner motor control circuit trouble

3) Scanner motor rotation sensor and its control circuit tr ouble

4) Sc anner home po sition se nsor (MH PS)and its inpu t circuit trouble (main cont rol circ uit trouble)

5) Scanner unit drive m echani s m trouble

6) An overload to the drive secti on

Remedy Use simulations 1-1 and 1-2 to check the following:

A. Check the mirror motor control circuit and its peripheral sections.

1) The scanner unit operates normally.

2) The scann er home pos iti on se nsor (( MHPS) oper ates n ormal ly an d i ts ou tpu t sig na l is inputted to the main control PWB.

3) The scanner m otor drive signal is out putted.

4) The scanner motor rotation sensor signal is inputted to the control circuit.

B. Check the scanner unit drive mechanism.

1) Drive wire

2) Pulley

3) Gear

After repair, turn off/on the power switch.

Detail 1) The scanner motor drive pulses required for the scanner unit to return are shifted more

than 50 pulses for the drive pulses required for feeding. (The corresponding distance is 10mm or more.)

2) The scanner motor drive pulses required for the scanner unit to return are within 50 pulses for the dr ive pulses req uired to feed.

3) The scanner unit does not return. Or through it returns, the scanner unit does not return to its home position (the MHPS does not turn on). (Though the scanner motor drive pulses required to return are 50 pulses greater than the drive pulses required for the scanner unit to feed, the scanner unit is not in the home position (the MHPS does not turn on).

4) After the scanner unit returns, the MHPS does not turn on.

Cause 1) Scanner motor trouble

2) Scanner motor control circuit trouble

3) Scanner motor rotation sensor and its peripher al secti ons trouble

4) Scanner home position sensor (MHPS) and its input circuit trouble

5) Scanner unit drive m echani s m trouble

6) Overload at the scanner motor drive section

Remedy Use simulation 1-1 and 1-2 to check the following:

A. Check the mirror motor control circuit and its peripheral.

1) The scanner unit operates normally.

2) The scanner home position sensor (MHPS) operates normally and its output signal is inputted to the main control circuit.

3) The scanner m otor drive signal is inputted.

4) The scanner motor rotation sensor signal is inputted to the control circuit.

B. Check the scanner unit drive mechanism.

1) Drive wire

2) Pulley

3) Gear

After repair, turn off/on the power switch.

9 – 2

Error code

Main Sub

L4 1 Detail The rotary encoder signal cannot be detected for more than 50ms during delivery of the

L5 2 Content Lens drive motor trouble 8-10

L8 1 Content Power frequency abnormality

3 Content During execution of simulation 47, the AE sensor output does not change according to

Item Description Ref. page

main motor On signal output.

Cause 1) Main moor trouble

2) Main control circuit trouble

3) Main motor rotation sensor and its input circuit (main control circuit) trouble

4) Main motor d rive mechanism trouble

5) An overload on the main motor drive section

Remedy Check the following items:

A. Check the main motor control circuit and its peripheral sections.

1) Main moto r drive signal is inputted .

2) The main motor rotation sensor signal is inputted to the control circuit.

B. Check the main motor drive mechanism.

1) Drive wire

2) Pulley

3) Gear

After repair, turn off/on the power switch.

Detail 1) During the initial operation, the lens does not move from the reduction copy position to

the enlarged copy position. Or the lens home position sensor (LHPS) does not turn on even though the lens moves (130mm/lens motor drive pulse output).

2) During the initial operation, the lens does not move to the enlargement copy position. Or the lens moves (70mm/ 50 pulses of lens motor drive pulse are outputted) but the lens home position sensor (LHPS) does not turn off.

3) When the lens moves from the reduction coy position to the enlargement copy position, the specified number of pulses required for the lens home position sensor (LHPS) to move from ON position to OFF position is shifted by 20 pulses (4mm) or more.

4) AT the c ompletion of le ns m ov em e nt , t h e le ns home position s en so r is no t O N when in enlargement copying, or not OFF when in reduction copying.

Cause 1) Lens motor trouble

2) Main control circuit trouble

3) Lens motor rotation sensor and its in put circ uit (main control PWB) trouble

4) Lens motor d rive mechanism t rouble

5) An overload on lens motor drive mechanism

Remedy Use simulations 1-3 or 1-4 to check the following items:

A. Check the lens motor control circuit and its peripheral sections.

1) The lens motor drive signal is outputted.

2) Lens motor rotation sensor signal is inputted to the control circuit.

B. Check the lens motor drive mechanism.

1) Drive wire

2) Pulley

3) Gear

After repair, turn off/on the power switch.

Detail The power frequency is shifted from the specified level by 5% or more for 10 cycles or

more, or the FW signal cannot be detected for more than 5 sec.

Cause 1) FW is not outputted or the output waveform is abnormal.

2) Power circuit trouble (AC power unit/DC power unit)

3) FW input circuit tr ouble (m ain control circ uit)

4) AC power tr ou ble (wa veform/voltag e)

Remedy Check the waveforms of the following units with an oscilloscope.

1) FW signal waveform in the DC power unit

2) FW signal waveform in the main control circuit

3) AC power line

After repair, turn OFF/ON the power switch.

change in the copy lamp voltage. Detail AE sensor trouble Cause 1) AE sensor or its input circuit (main control PWB) trouble

2) Cop y lamp cont rol circ uit troub le (copy lamp control sign al abnormality)

3) A white paper is not set on the document table or the document table or the document cover is dirty.

8-11

8-5

9 – 3

Error code

Main Sub

L8 3 Remedy Check the following items:

H2 0 Content Fuser section thermistor trouble

H3 0 Content Abnormally high temperature in the fuse section 8-11

H4 0 Content An abnormally high temperature in the fuse section 8-11

U2 1 Content In the main PWB EEPROM data sum check, the data do not correspond to the CPU data. 8-12

4 Content memory line communication trouble 8-12

Item Description Ref. page

1) AE sensor or its in put circ uit

2) Cop y lamp cont rol circ uit (copy lamp cont rol signal)

After repair, turn off/on the power switch.

Detail The voltage across the thermistor input circuit remains 4.6V or more for 1500 ms or more. Cause 1) Thermistor and its input circuit (main control PWB) trouble (disconnection) Remedy Check the thermistor and its input circuit (main control circuit) for disconnection.

AFter repair, used simulations 14 to cancel the self diag.

Detail The voltage across the thermistor input circuit remains 1.39V or less for 1500 ms or more.

(A high temperature above 241 C is detected.)

CAuse 1) Thermistor and its input circuit (main control PWB) trouble (disconnection)

2) Heater lamp control signal and its co ntrol circuit tr ouble

(The heater lamp remains ON.)

Remedy Check the following items:

1) Ther mistor and its input circuit ( m ain control PWB) disconnection

2) Heater lamp control signal and its co ntrol circuit

After repair, use simulations 14 to cancel the self diag.

Detail 1) The voltage across the thermistor input circuit remain 3.39V o r more for 1500ms. (A

temperature below 148°C is detected.)

2) The tempe rat ure doe s n ot re ach the sp ecifi ed t em perat ure wi thi n 60 sec af ter start ing warming up.

Cause 1) Thermistor and its input circuit (main control circuit) trouble (disconnection)

2) Heater lamp trouble

3) Heater lamp control signal and its co ntrol circuit tr ouble (The heat er lamp remains ON.)

Remedy Check the following items:

1) Che c k the thermistor a nd its input circuit (main control PWB) for di sconnection or shot.

2) Heater lamp control signal and its co ntrol circuit

3) Heater lamp

After repair, use simulations 14 to cancel the self diag.

Cause 1) Main PWB EEPROM trouble

2) Main control circuit trouble

3) Communication line trouble between the main PWB EEPROM and the CPU

4) CPU trouble

5) Data bus line trouble

Remedy Check the following items:

1) main PWB EEPROM

2) Memory control circuit

3) Communication line between main PWB EEPROM and CPU

4) CPU

5) Data bus line

After repair, use simulations 16 to cancel the self diag. When the power is turned on, data in the main PWB EEPROM are transferred to the CPU

to perform sum check. The operation can be checked at that time.

Detail 1) In a ccess to the main PWB EEPROM, the respond c ommand ACK is not inputted to

the CPU.

2) When writing da ta in to th e main PWB EEPROM, the writ e e nabl e s igna l is n ot input ted to the CPU for 11ms or more.

Cause 1) Main EEPROM RAM trouble

2) Memory control circuit trouble

3) Communication li ne trouble between main PWB and CPU

4) CPU trouble

5) Data bus line trouble

9 – 4

Error code

Main Sub

U2 4 Remedy Check the following items: 8-12

U5 5 Content Abnormally high temperature on the original glass when using the SPF.

EE EU Content Toner density initial setting trouble (undertoner) 8-6

EL Content Toner density initial setting trouble (overtoner) 8-6

CH Light Content Paper feed section cover open 8-10

Light Content Manual paper feed unit installation trouble (MFD0, MFD1) 8-10

Item Description Ref. page

1) Main PWB EEPROM

2) Memory control circuit

3) Communication line between main PWB EEPROM and CPU

4) CPU

5) Data bus line

After repair, use simulation 16 to cancel the self diag When the power is turned on, data communication is performed with the main PWB

EEPROM and the CPU. The operation can be checked at that time.

Detail The thermistor detects 55°C or above. Cause 1) Thermistor and input circuit (main control PWB) trouble (disconnection)

2) Copy lamp control signal and control circuit trouble (Copy lamp remains ON.)

Remedy Check the following items.

1) Thermistor and inp ut circuit (main control PWB) di sconnection

2) Copy lamp control signal and control circuit Turn OFF/ON the power to cancel the diagnostics.

Detail When setting the toner density initial level with simulation 25-2, the toner density sensor

output is below the specified voltage (1.53V).

Cause 1) Toner sensor trouble

2) Toner sens or input circuit t rouble (main con tr ol PWB)

Remedy Use simulations 25-2 to check the following items:

1) Toner sensor

2) Toner sens or input circuit

After repair, use simulations 14 to cancel the self diag.

Detail When setting the toner density initial level with simulation 25-2, the toner density sensor

output is above the specified voltage (3.49V).

Cause 1) Toner sensor trouble

2) Toner sens or input circuit t rouble (main con tr ol cir cuit)

3) Toner motor and its control circuit trouble

Remedy Use simulations 25-2 to check the following items:

1) Toner sensor

2) Toner sensor input circuit

3) Toner motor and its control circuit

After repair, use simulations 14 to cancel the self diag.

Detail 1) The paper feed section cover open/close detector (CSDSD) and its input circuit

remains Low (0V).

Cause 1) Paper feed section cover open/close mechanism trouble

2) Pape r feed sect ion cover op en/close d etector sig nal (CSDSW) an d its cont rol circuit trouble

3) Pap er feed sect ion cove r open/close detector (CSDSW ) troubl e

Remedy check the following items:

1) Paper feed section cover open/close mechanism

2) Paper feed section cover open/close detector signal (CSDSW) and its input circuit

3) Pap er feed secti on cover open/close detector (CSDSW)

Detail 1) The manual paper feed unit signal (CSDSW) and its control circuit remains MFD0 level

and MFD1 level.

Cause 1) The manual paper fee d unit signal (MFD1) line is not connected or disconnection in the

line. (The manual paper feed unit is not installed.)

Remedy Check the following item:

1) Manual paper feed unit signal (MFD1) line

9 – 5

Error code

Main Sub

PC Content Personal counter installation trouble

Paper empty

Toner empty Light Content Toner concentration fall 8-6

Toner empty Blink Content Toner concentration fall (Copy stop) 8-12

JAM Content Copy paper misfeed trouble 8-3

Item Description Ref. page

Detail The personal counter is not installed in the personal counter mode.

The input circuit of the personal counter installation detect signal does not turn HIGH level.

Cause 1) Personal counter trouble

2) Personal counter in stallation detecting signal input circuit (main P WB) trouble

3) Personal counter wir ing

Remedy Check the following items:

1) Personal counter

2) Personal counter installation detecting signal input circuit (main PWB)

3) Personal counter wiring

Content Paper tray open/no copy paper Detail 1) The selected paper tray is removed.

2) There is no paper in the selected paper tray.

Cause 1) The selected paper tray is removed.

2) There is no paper in the selected paper tray.

3) The select ed pap er t ray de tect o r (CP ED 1 , CPE D2 ) and i ts inpu t ci rcu it ( ma in PWB ) t rou bl e

4) The selected paper tray paper empty detector (CPED1/CPED2) and its input circuit (main PWB)

Remedy Check the following items:

1) The selected paper tray paper empty detector (CPED1/CPED2) and its input circuit (main PWB)

Detail 1) No toner in the toner box

2) Toner supp ly tr ouble

Cause 1) No toner in the toner box

2) Toner motor and its control circuit (main PWB) trouble

3) Toner supply section clog ging

4) Toner sensor and its input cir cuit (main PWB) tr ouble

Remedy Use simulation 25-2 to check the following items:

1) Toner box

2) Toner motor and its control circuit (main PWB)

3) Toner supply section

4) Toner sens or and its control circuit (main PWB)

Detail 1) No toner in the toner box

2) Toner density falls below the specified level.

Cause 1) No toner in the toner box

2) Toner motor and its control circuit (main PWB) trouble

3) Toner supply section clog ging

4) Toner sensor and its input cir cuit (main PWB) tr ouble

Remedy Check the following items:

1) Toner box

2) Toner motor nd its control circuit (main PWB)

3) Toner supply section

4) Toner sensor and its input cir cuit (main PWB)

Detail 1) Misfeed of copy paper occurs in the copy paper feed section, t he transfer section, the

transport section, or the fuse section.

Cause 1) The copy paper detector in each section remains ON or OFF.

2) The copy paper detector in each sectio n and its input circuit (main PWB) trouble

3) The co py pa per feed and tr an sport clutches in each section an d its control cir cu it ( m ain PWB) trouble

4) Paper feed roller and transport roller trouble

5) Copy paper fed and transport drive me chanism trouble (motor, gear, etc.)

6) Insufficient or excessive contact pressure between copy paper and the resist roller because of improper setting with simulation 51-2.

Remedy Check the following items:

1) Copy paper detector in each section

2) Cop y paper detector and its inpu t circuit (main PW B) in each section

3) Cop y paper feed and transport clutches and their control circuit (main PWB) trouble

4) Paper feed roller, transport roller

5) Copy paper feed and transport drive mechanisms trouble (motor, gear, etc.)

6) Set value of simulation 51-2

9 – 6

Error code

Main Sub

Item Description Ref. page

SPFJAM Content Document misfeed trouble 8-11

Detail 1) When the document is in the SPF section, a misfeed of copy paper occurs. Cause 1) The document detector in he SPF section remains ON or OFF.

2) The document detec tor in the S PF section and it s input circuit (main PWB) trou ble

3) The paper feed and transport clutches in the SPF section and its control circuit (main PWB) trouble

4) SP F sectio n paper feed roller and transport roller tr ouble

5) Document pa per feed section and its transpor t drive s ystem trouble (motor, gear, etc.)

6) Insufficient or excessive contact pressure between the SPF resist roller and the document because of improper setting with simulation 51-7

Remedy Use simulation 2 to check the following items:

1) SP F section document detector

2) SP F sectio n document detector and its input c ircuit (main PWB)

3) SP F section paper feed and transport cl utches and their control circuit (main PWB)

4) SP F sectio n paper feed roller, transport roller

5) Document paper feed and transport drive system (motor, gear, etc .)

6) Set value of simulation 51-7

5. Conditions for the JAM display

1) Paper feed section

(1) The JAM lamp lights up if 9 PPD does not turn on within about

1.5 sec after N CPFC1 ON.

(2) The Jam lamp lights up if 9 PPD does not turn on within about

1.0 sec after O MPFC ON.

2) Transport section

(1) The JAM lamp lights up if 5 PPD does not turn off within about

3.2 sec after H RRC ON.

(2) The JAM lamp lights up if 1 POD does not turn off within about

2.8 sec after 5 PPD ON.

(3) The JAM lamp lights up if 1 POD does not turn on within about

2.4 sec after H RRC ON.

9 – 7

[10] SERVICING A T MEMORY

TROUBLE AND MAIN CONTROL PWB REPLACEMENT

1. General

The control PWB stores various set values, adjustment values, and counter values. These data are very important and used for operating the machine properly and for service control. In the following cases, therefore, various set values, adjustment values and counter values must be set again.

When a memory trouble (U2) occurs.

When the EEPROM in the main control PWB is replaced.

When the main control PWB is replaced.

When "U2" trouble occurs, the data cannot be relied upon, and they must be set properly.

Memory trouble

Procedures for memory trouble, main control PWB replacement, and main control PWB EEPROM replacement

"U2" troub l e

occurs

Repair the

defective section

Do you replace

the main control

PWB?

YES

Replace the main

control PWB

Cancel "U2" trouble

with simulation 16

2. Purpose

The purpose is to reset the memory data to operate the machine properly. Use the attached service memory data recording sheet to memorize the newest data when servicing in order to cope with the above situations. This improves efficiency in servicing and realizes quick recovery.

3. Remedies

Perform the procedures according to the following flowcharts. "Sim" in the flowchart means "Simulation."

Replace the main

control PWB

Is the

EEPROM in the main control PWB defective?

YES

Replace the main

control PWB

Clear the drum counter with Sim 24 -7.

Reset the mainte nance counter with Sim 20-1.

Replace the

EEPROM in the

main control PWB

Mount the EEPROM of

the old main control to

the new main control

End

Replace the EEPROM

10 – 1

Is the toner

density reference value

recorded?

YES

Enter the toner density reference v alue with Sim 73-1.

Use Sim 43-1 to set the fusing temperat ure

Set the temperature in the power save mode with Sim 43-2.

Set the model with Sim 26-1.

Use Sim 21-1 to set the maintenance cycle to the specifie d va lue

Use Sim 26-6 to set the desitinatio n specifications

Use Sim 26-13 to set the ope ration mode in warm-up

Set to the manual paper feed mode with Sim 26-12.

Use Sim 25-2 to set the toner den sity r e ference v a l u e

Is the co py

densi ty adjustmen t

value r ecor ded?

YES

Use S im 46- 1/ 51-6 to set the copydensity adjustment value

Is the

YES

Is the vertical

copy magnificat ion

ratio adjustment value

recorded?

Use Sim 48 -1 to the vertical copy magnification ratio adjustment value

horizontal copy magnification

ratio adjustment value

recorded?

YES

Use Sim 48-2 to set the horizontal copy magnification ratio adjustment value

Make a copy and adjust the copy density (Sim 46-1/ 51-6)

Make a copy and adjust the vertical magnification rati o

Make a copy and adjust the horizontal copy magnification ratio

Set to the correction mode with Sim 44-1.

Execute Sim 47.

Is the v ertical

copy magnification

ratio adjustment value

in zoom copying

recorded?

Use Sim 26-8 to set the vertical magnification ratio adjustment value in zoom copying

Is the adjustment

value of contact pressur

between the main body resist

roller and the copy paper

recorded ?

YES

Use Sim 51-2 to set the adjustment value of contact pressure between the main body resis t rolle r and th e copy pape r

Make a copy amd adjust the vertical magnification ratio in zoom copying

Make a copy and adjust t he contact pressure betwee n the main body resist roller and the c o py paper

10 – 2

Are the image

lead edge position

adjustment value and

the resist roller ON

timing adjustment value

recorded?

YES

Use S im 50- 1 t o set t he i mage lead edg e position adjus tment value and the resist roller ON timing adjustment valu e

Is the SPF mode

horizontal copy magnif icat ion

ratio adjustment

value recoded?

YES

Use Sim 48-3 to set SPF mode horizontal copy magnification ratio adjustment value

Is the adjustment

value of c ont a c t pressure

between the S PF resist roller

and the document

recorded?

YES

Make a copy and adjust the im age lead efge position an d the resist roller ON timing

Make a copy and adj ust the S P F mode horizontal copy magn ification ratio

Make a copy and adjust the contac t pressure bet ween the SPF resist roller and the document

Use S im 51- 2 to set t he adjuatmen t value of c on tact pressu re betwee n t he SPF resist roller and the document

Is the SPF

resist roller ON timing

adjustment value

recorded?

Use Sim 50-1 to set the SPF resist roller ON timing adjustment value

Is the void

amount adjustmant

value rec o rd ed?

YES

Use S im 45-1 to s et the void am ount adjust me nt value

Make a c o py and adj us t the SPF resist roller ON timing

Make a c o py and adj us t the void amount

End

10 – 3

SHARP SF-1014 Diagram

Specifications and Main Features

Frequently Asked Questions

User Manual