Sharp SF-2118, SF-2116 Service Manual

SERVICE MANUAL

CODE: 00ZSF2118SMRE

MODEL SF-2116

MODEL SF-2118

SF-2116

SF-2118

CONTENTS

[ 1 ] PRODUCT OUTLINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 – 1

[ 2 ] PRODUCT SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 – 1

[ 3 ] PRODUCT VIEWS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 – 1

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

[ 5 ] DESCRIPTION ON EACH SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 – 1

Option • Paper tray (SF-UB15)

• Multi paper feed unit (SF-MF15)

• Two-step paper feed unit (SF-CM15)

• Personal counter (SF-71A/71B)

• 10-bin sorter (SF-S17) @

• Reverse document feeder (SF-A15) @

@For the options, refer to their service

manuals.

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

[ 7 ] ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 – 1

[ 8 ] SIMULATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 – 1

[ 9 ] SELF DIAGNOSTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 – 1

[10] MEMORY TROUBLES, FLOWCHART FOR REPLACEMENT OF

MAIN CONTROL PWB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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.

[1] PRODUCT OUTLINE

1. Product features

(1) Compact body

• Compact body size

The body width of 600mm is the smallest in the class.

• The employment of the front loading tray and the folding-type multi

manual paper feed cassette realizes the small occupying area. (Option)

2. System configuration (options)

(2) Clean copy gentle to the environment

• Silent design of 46dB,

• Low level of ozone, use of recyclable materials

• The energy-saving mode reduces the power consumption.

(3) High capacity of copying

• Warm-up time is less than 35 sec. The first copy of 5.3 sec is the

fastest in the class.

(4) Fully expandable system. (Refer to "2. System configuration.")

Reverse document feeder SF-A15

10-bin sorter SF-S 17

Two-step paper feed unit SF-CM15 (Option for SF-211 8 onl y)

Multi paper feed unit SF-MF-15

Tray (reserve) SF-UB15

1 – 1

Personal counter

[2] PRODUCT SPECIFICATIONS

1. Basic specifications

(1) Type: Table top (2) Copy speed: <SF-2116>

Normal

A3 9 sheets/min 9 sheets/min

B4 11 sheets/min 11 sheets/min 11 sheets/min A4 (Portrait) 16 sheets/min 13 sheets/min 13 sheets/min A4 (Landscape) 13 sheets/min 13 sheets/min 13 sheets/min B5 (Portrait) 16 sheets/min 13 sheets/min 13 sheets/min B5 (Landscape) 13 sheets/min 13 sheets/min 13 sheets/min W letter 9 sheets/min 9 sheets/min 9 sheets/min Legal 11 sheets/min 11 sheets/min 11 sheets/min Letter (Portrait) 16 sheets/min 13 sheets/min 13 sheets/min Letter (Landscape) 13 sheets/min 13 sheets/min 13 sheets/min

(Note) The copy speeds for enlargement and reduction are the lowest

ones.

<SF-2118>

Normal

A3 10 sheets/min 10 sheets/min

B4 12 sheets/min 12 sheets/min 12 sheets/min A4 (Portrait) 18 sheets/min 14 sheets/min 14 sheets/min A4 (Landscape) 14 sheets/min 14 sheets/min 14 sheets/min B5 (Portrait) 18 sheets/min 14 sheets/min 14 sheets/min B5 (Landscape) 14 sheets/min 14 sheets/min 14 sheets/min W letter 10 sheets/min 10 sheets/min 10 sheets/min Legal 12 sheets/min 12 sheets/min 12 sheets/min Letter (Portrait) 18 sheets/min 14 sheets/min 14 sheets/min Letter (Landscape) 14 sheets/min 14 sheets/min 14 sheets/min

(Note) The copy speeds for enlargement and reduction are the lowest

ones. (3) Warm up time: 35 sec or less (4) First copy time: 5.3 sec (Paper feed port: Upper tray)

First copy time from each paper feed port

Paper feed port SF-2116 SF-2118 Body tray upper stage 5.3 sec Body tray lower stage NO 5.8 sec Option paper feed unit first step NO 6.1 sec Option paper feed unit second

step

(5) Jam recovery time: 8 sec (Conditions: After leaving the door

open for 60 sec, the standard conditions) (6) Multi copy Max. 99 sheets (7) Original

Max. original size A3/W letter Reference original size Left side/Center Original sensing

Sensing size — A3 ∼ B5R

Enlargement

(Magnification)

(200%)

Enlargement

(Magnification)

(200%)

NO 6.4 sec

SF-2116 SF-2118

Reduction

(Magnification) 9 sheets/min

(50%)

Reduction

(Magnification) 10 sheets/min

(50%)

YES

(Japan only)

(8) Copy magnification ratio

Fixed magnification: 200, 141, 122, 115, 100, 86, 81, 70, 50% (9

steps)

Zoom range: 50% ∼ 200% (151 steps by the increment of 1%)

(9) Exposure

Exposure mode: Auto/Manual/Photo No. of manual steps: 9 steps

(10) Void width

Void area: Lead edge/rear edge: 3mm or less Image loss Normal: 4mm or less

(11) Paper exit/finishing

Paper exit tray capacity: 250 sheets Finishing: option 10-bin sorter

(12) Additional functions

Function

SF-2116 SF-228

Auto Paper Selection

× F

Auto Magnification ratio Selection

Shift × 1-set 2-copy F Enlargement is impossible. Edge erase × F Trimming × Masking × Centering × Move image × Covers/inserts × Overlay × Job memory × Monochrome × F (Red, Blue)

(13) External dimensions

W x D x H mm 600 x 585 x 375 600 x 585 x 460 Occupying area

(W x D) Weight 43.5Kg 49.5Kg

(14) Power source

Voltage: 100V 50/60Hz, 110V 50/60Hz, 120V 60Hz, 127V 60Hz,

Frequency: 50/60Hz common

(15) Power consumption

Max. power consumption 1.5kw Stand-by power

consumption Average power

consumption during operation

Preheating 70W Auto power shut off 15W

2 – 1

× F

SF-2116 SF-2118

220 ∼ 230V 50/60Hz, 240V 50Hz

18W (Heater lamp OFF) 1kW (Heater lamp ON)

1320W

For the SF-2118 (outside Japan version), original sensing is possible when the ADF (option) is installed.

Inhibited in mixed size paper feed. For outside Japan version, the original size is entered.

850 x 585

Remark

2. Description of each section

(1) Paper feed section

SF-2116 SF-2118 Copying size A3 ∼ A6/W letter ∼ Invoice Paper feed

system Paper feed

capacity

Cassette Paper size Paper weight Paper kind Remark

Body tray upper stage

Body tray lower stage

Manual feed

Two-step paper feed unit (Option)

Multi

Multi manual paper feed (Option)

Single

1 tray + Single manual feed

AB series: A3 ∼ A5

Inch series: W letter ∼ Invoice

AB series: A3 ∼ A5

Inch series: W letter ∼ Invoice

AB series: A3 ∼ A6R

Inch series: W letter ∼ Invoice

AB series: A3 ∼ A5

Inch series: W letter ∼ Invoice

AB series: A3 ∼ A6R Inch series: W letter ∼ Invoice

2 trays ∼ Single manual feed

250 sheets 250 x 2 sheets

56 ∼ 80g/m

Standard paper,

recycled paper

Standard

15 ∼ 20 lbs

56 ∼ 80g/m

paper,

15 ∼ 20 lbs

52 ∼ 128g/m

recycled paper

Standard

paper, specified paper, special paper, OHP film,

14 ∼ 34 lbs

Second original paper, postcards (without folding)

56 ∼ 80g/m

Standard paper,

15 ∼ 20 lbs

recycled paper

56 ∼ 80g/m2Standard

paper,

15 ∼ 20 lbs

specified paper, special

52 ∼ 128g/m

paper, OHP film,

Second original paper,

14 ∼ 34 lbs

postcards (without folding)

SF-2118 only

(3) Process

Charging system (–) DC saw teeth electrode system Transfer system (–) tungsten system Separation system (AC) separation tungsten system

(4) Developing section

Developing system Dry, two-component magnetic brush

development (developer replacement)

Developing bias voltage DC–200V ±5V

(5) Fusing section

Fusing system Heat roller system Upper heat roller

surface temperature

190 degrees

Heater lamp Halogen lamp 1000W × 1

(2) Optical section

Light source Halogen lamp Exposure system Slit exposure by moving the light source Zooming system By changing the lens positions and the scan

speed.

Lens Fixed focus lens

2 – 2

3. Supply parts

U.S.A., Canada

Name Content Life Product name

1 Photoconductor kit Photoconductor drum x 1

Cleaner blade x 1

Drum separation pawl x 2 2 Black developer Black Black developer (530g) x 10 50K x 10 SF-216MD1 3 Color developer Red Color developer (550g) x 10 10K x 10 SF-780MD2

Blue SF-780MD3 4 Black toner Black Black toner cartridge (210g) x 10 5K x 10 SF-216MT1 5 Color toner Red Color toner cartridge (210g) x 10 5K x 10 SF-216MT2

Blue SF-216MT3 6 Color developing unit

kit

7 Upper heat roller kit Upper heat roller x 1

8 Lower heat roller kit Lower heat roller x 1

Red Developing unit x 1

Blue SF-216NK3

Color developer (550g) x 1 Color toner cartridge (210g) x 1 Storage case x 1

Upper fusing separation pawl x 4 Fusing bearing (F) x 1

Lower fusing separation pawl x 2

Europe/U.K.

Name Content Life Product name

1 Photoconductor kit Photoconductor drum x 1

Cleaner blade x 1

Drum separation pawl x 2 2 Black developer Black Black developer (530g) x 10 50K x 10 SF-216LD1 3 Color developer Red Color developer (550g) x 1 10K SF-780DV2

Blue SF-780DV3 4 Black toner Black Black toner cartridge (210g) x 10 5K x 10 SF-216LT1 5 Color toner Red Color toner cartridge (210g) x 1 5K SF-216T2

Blue SF-216T3 6 Color developing unit

kit

7 Upper heat roller kit Upper heat roller x 1

8 Lower heat roller kit Lower heat roller x 1

Red Developing unit x 1

Blue SF-216K3

Color developer (550g) x 1 Color toner cartridge (210g) x 1 Storage case x 1

Upper fusing separation pawl x 4 Fusing bearing (F) x 1

Lower fusing separation pawl x 2

50K SF-216DR

SF-216NK2

100K SF-216UH

50K SF-216LH

50K SF-216DM

SF-216K2

100K SF-216UH

50K SF-216LH

Australia/New Zealand

Name Content Life Product name

1 Photoconductor kit Photoconductor drum x 1

Cleaner blade x 1

Drum separation pawl x 2 2 Black developer Black Black developer (530g) x 10 50K x 10 SF-216LD1 3 Color developer Red Color developer (550g) x 10 10K x 10 SF-780LD2

Blue SF-780LD3 4 Black toner Black Black toner cartridge (210g) x 10 5K x 10 SF-216LT1 5 Color toner Red Color toner cartridge (210g) x 10 5K x 10 SF-216LT2

Blue SF-216LT3 6 Color developing unit

kit

7 Upper heat roller kit Upper heat roller x 1

8 Lower heat roller kit Lower heat roller x 1

Red Developing unit x 1

Blue SF-216K3

Color developer (550g) x 1 Color toner cartridge (210g) x 1 Storage case x 1

Upper fusing separation pawl x 4 Fusing bearing (F) x 1

Lower fusing separation pawl x 2

2 – 3

50K SF-216DM

SF-216K2

100K SF-216UH

50K SF-216LH

Middle and South America/Asia

Name Content Life Product name

1 Photoconductor kit Photoconductor drum x 1

2 Black developer Black Black developer (530g) x 10 50K x 10 SF-216CD1 3 Color developer Red Color developer (550g) x 10 10K x 10 SF-780LD2

Blue SF-780LD3 4 Black toner Black Black toner cartridge (210g) x 10 5K x 10 SF-216CT1 5 Color toner Red Color toner cartridge (210g) x 10 5K x 10 SF-216CT2

Blue SF-216CT3 6 Color developing unit

kit

7 Upper heat roller kit Upper heat roller x 1

8 Lower heat roller kit Lower heat roller x 1

Red Developing unit x 1

Blue SF-216SK3

Cleaner blade x 1 Drum separation pawl x 2

Color developer (550g) x 1 Color toner cartridge (210g) x 1 Storage case x 1

Upper fusing separation pawl x 4 Fusing bearing (F) x 1

Lower fusing separation pawl x 2

50K SF-216DR

SF-216SK2

100K SF-216UH

50K SF-216LH

Middle East/Africa (excluding Russia)

Name Content Life Product name

1 Photoconductor kit Photoconductor drum x 1

Cleaner bladex 1

Drum separation pawl x 2 2 Black developer Black Black developer x 10 50K x 10 A3SF216LD1 3 Black toner Black Black toner bottle (250g) x 10 6K x 10 A3SF116LT 4 Upper heat roller kit Upper heat roller x 1

Upper fusing separation pawl x 4

Fusing bearing (F) x 1 5 Lower heat roller kit Lower heat roller x 1

Lower fusing separation pawl x 2

50K A3SF216DM

100K A3SF216UH

50K A3SF216LH

Asia (Excluding Taiwan(AURORA)/Hong Kong (SRH))

Name Content Life Product name

1 Photoconductor kit Photoconductor drum x 1

2 Black developer Black Black developer x 10 50K x 10 A3SF216CD1 3 Black toner Black Black toner bottle (250g) x 10 6K x 10 A3SF116CT 4 Upper heat roller kit Upper heat roller x 1

Lower heat roller kit Lower heat roller x 1

Cleaner bladex 1

Drum separation pawl x 2

Upper fusing separation pawl x 4

Fusing bearing (F) x 1

Lower fusing separation pawl x 2

50K A3SF216DR

100K A3SF216UH

50K

A3SF216LH

2 – 4

4. Optional specifications

(1) Automatic document feeder (ADF) <SF-A15>

Original set direction Face down Original set position Center reference Original transport system Belt (half size) system

Remark For an original of A4 or greater, it is once transported

to the paper exit section and switched back to set the

next original. Original feed sequence Top taking (Face up exit) Original size A3 ∼ A5/11" x 17" ∼ 8 1/2" x 5 1/2" Original change speed

(S → S) Original weight 35 ∼ 128g/m

Original set quantity 50 sheets, 80 ~ 128 g/cm2,

Original stop system Stopper system Dimensions 586 (W) x 525 (D) x 99 (H) (mm)

Weight About 11kg Power source AC100V ∼ 200V supplied from the

Functions

Original sensing on the tray

Tray form Slide system Sensing size Inch series: 11" x 17", 8 1/2" x 14", 8

Original mixture Allowed (However, no linkage with the

Original reverse NO

16 sheets/min (SF-2116), 18 sheets/min (SF-2118)

Thin paper mode (35 ∼ 50g/m2) Standard mode (50 ∼ 128g/m2)

thickness max. 5 mm

(Width: when the tray is installed. Height: Excluding the auxiliary guide.)

copier’s power section.

YES (Scanning read for uncertain size originals.)

1/2" x 11", 8 1/2" x 11"R, 8 1/2" x 5 1/2" AB series: A3, B4, A4, A4R, A5

AMS)

Display section

1 Original feed display

section

2 Original remaining

display

SDF mode Selection between the SDF mode and

Thin paper mode Selection between the thin paper

ADF shows the operation valid state. Lighted when an original is set.

When the original transport cover is used as the original cover, the LED lights up on completion of the final exposure. When the transport cover is opened, the LED goes off.

the ADF mode is possible. (Selectable with the user program.)

mode and the standard mode is possible. (Selectable with the user program.)

(2) 10-bin sorter <Model name: SF-S17>

Type Copier installation type/Hanging type Distribution system Bin shift by lead screw No. of bins 10 bins (The top bin is used also for

non-sort.)

Capacity 30 sheets/bin (L4/letter size), 100

Sorting 30 sheets (A4/letter)

Grouping 20 sheets (A4/letter)

Paper size (Non-sort) A3 ∼ A6 (Postcard)R/11" x 17" ∼

(Sort/group) A3 ∼ A5/11" x 17" ∼ 8 1/2" x 11" Process capacity 16/18 sheets/min Paper transport Center reference Paper reception Face up Paper weight (Non-sort) 52 ∼ 128g/m2 (14 ∼ 34lbs)

(Sort/group) 56 ∼ 80g/m2 (15 ∼ 21lbs) Power source Supplied from the copier.

sheets for the top bin only.

15 sheets (B4/legal) 15 sheets (A3/W letter)

8 1/2" x 5 1/2"

Dimensions 335 (W) x 493 (D) x 298 (H)

Weight 7kg

2 – 5

(Width: Including the tray.)

(3) Multi manual feed unit <Model name: SF-MF15>

Paper size A3 ∼ A6 (Postcard) R

11" x 17" ∼ 8 1/2" x 5 1/2" Paper weight 52 ∼ 128g/m2, (14 ∼ 34lbs) Paper feed

capacity

Paper kind Standard paper, specified paper,

Paper empty sense NO Manual feed size sense NO Paper feed tray Folding type Paper set Same size only Power source Supplied from the copier. Dimensions (W x D x H) 350 (W) x 493 (D) x 185mm (H) Weight About 2kg

MUlti paper feed

Single paper feed

56 ∼ 80g/m2 (15 ∼ 21lbs) (50 sheets) Postcard (20 sheets)

52 ∼ 128g/m2, (14 ∼ 34lbs) and special paper (For paper of 105g/m2 (28lbs) or heavier, A4 size or lower.)

special paper, OHP film, Second

original paper, postcards (without

folding)

(4) Two-step paper feed unit (SF-2118 only) <Model name: SF-CM15>

Paper size A3 ∼ A5 Paper feed capacity 250 sheets x 2 steps Paper weight 56 ∼ 80g/m2 (15 ∼ 21 lbs) Paper kind Standard paper, recycled paper Size selection Tray replacement/user handling Power source Supplied from the copier. Dimensions (W x D x H) 570 (W) x 570 (D) x 188mm (H) Weight About 14kg

2 – 6

[3] PRODUCT VIEWS

1. External view and internal structure

12 14

15 16 18

Upper unit

Lower unit

No. Name No. Name No. Name

1 Original cover 2 Original table 3 Paper exit tray 4 Grip 5 Manual feed unit 6 Manual feed original guide 7 Operation panel 8 Front cover 9 Power switch F Paper tray G Developing unit grip H Developing unit strap I Toner hopper J Developing unit lock lever K Release lever L Fusing unit M Drum

3 – 1

2. Operation panel

SF-2118

SORT ER

SORT

GROUP

SF-2116

DUAL PAGE COPY

EDGE ERASE

3 4 5 6 7 8 9 10 11121314 15 16 17

EXPOSURE

AUT O MANUAL PHOTO

0 1 2 3 4

. . . .

ORIGI NA L SIZE

ORIGINAL S IZE ENTER

EXTRA

PAPER SIZE

AUTO PAPER

SELEC T

TRAY SELECT

AUTO I MAG E

PRESET RAT IO

100%

115%

86%

122%

81%

141%

70%

200%

50%

0 1 2

ZOOM

6 4 8 5 9

18 19 2 0 21 22 23 24 25 26 27 28 2 9 30

...

0,2,3,

...

0,2,3,

...

1,2,

...

0,1,

357

AUTO

1 2 3 4

. . . .

A4 A4 A5

B4 EXTRA

910 11121314 15 16 17

A3 A5

100%

A5 A3

200%

141%

122%

115%

ZOOM

86%

81%

70%

50%

012

64859

// C

POWER SAVE

19 21 23 24 26 27 28 29 30

No. Name No. Name No. Name

1 Sorter key and indicators 2 Dual page copy key and indicators 3 Auto/Manual/Photo key and indicators 4 Original size indicators 5 Paper size indicators 6 Auto paper select indicators 7 Paper required indicator 8 Misfeed indicator 9 Paper feed location/misfeed location

indicators

F Preset ratio indicators G Copy quantity display H Maintenance required indicator I Developer replacement required

J Toner required indicator K 10-Key pad

indicator

L Power save indicator M Clear all key N Edge erase O Light and dark keys and indicator P Original size enter key Q Tray select key R Auto image key and indicator S Copy ratio keys T Zoom indicator U Copy ratio display key V Zoom keys W Interrupt key and indicator X Zero/readout key Y Clear key Z Print button and ready indicator

3 – 2

3. Clutches, solenoids, and motors

Clutches and solenoids

3 8

No. Signal name Name Functions, operations

1 PSPS Paper separation solenoid Paper separation solenoid drive 2 RRC Resist roller clutch For resist roller rotation 3 TRC Transport roller clutch For transport roller rotation 4 CPFC1 Tray paper feed clutch For paper feed roller rotation 5 CPFC2 Tray paper feed clutch (SF-2118) For paper feed roller rotation 6 CPFC3 Option tray paper feed clutch For paper feed roller rotation 7 CPFC4 Option tray paper feed clutch For paper feed roller rotation 8 MPFS Manual paper feed solenoid

(Option 2-step paper feed unit: SF-MF15 only)

For pressing take-up roller

Motors

No. Signal name Name Functions, operations Type

9 VFM Ventilation fan motor Used to ventilate around the fusing section, cools

down the machine, and remove ozone.

F MM Main motor Used to drive the body. DC brush G CFM Optical system cooling fan Used to cool and ventilate the optical system. DC brushless H LM Lens motor Used to move the optical lens. DC stepping I TM Toner motor Used to stir toner. DC synchronous J MRM Mirror motor Used to move the mirror base. DC stepping K CS2M Paper feed motor (SF-2118) Used to drive the paper feed roller. (SF-2118) DC brush L CS3M Option paper feed motor Used to drive the option paper feed roller. DC brush M CS4M Option paper feed motor Used to drive the option paper feed roller. DC brush N SMF Suction fan motor Used to ventilate the suction section. DC brushless

3 – 3

DC brushless

4. PWB

19 10

213 4 51

16 1214 1315

No Name Description No Name Description

1 Operation PWB A Operation input, display control 2 Operation PWB B Operation input, display control 3 Blank lamp PWB Used to control the blank lamp. 4 DL PWB Used to drive the discharge lamp. 5 Optical PWB AE sensor and lens motor interface 6 Process control PWB Used to sense the toner density. 7 Main PWB Used to control the body. 8 AC circuit PWB AC power input 9 CSD PWB Used to sense the body cassette

size.

G Paper feed power PWB Used to supply power to drive the

paper feed unit.

I CSD B PWB Used to sense the cassette size of

2nd ∼ 4th tray.

K Tray module PWB Vertical transport of 2nd ∼ 4th

cassette, JAM detection, paper feed clutch interface

M Paper feed I/F PWB Body paper detection, paper feed

clutch interface

O PPD PWB Body PR roller JAM detection P High voltage PWB Process high voltage, developing

Q PDD PWB Body paper exit section JAM

detection, ventilation fan motor interface

F DC circuit PWB DC power input

H Motor control PWB Used to drive and control the

paper feed motor and the transport motor.

J Motor sensor PWB Encoder for 2nd ∼ 4th paper feed

motor

L DPPD PWB Vertical transport of 2nd ∼ 4th tray,

JAM detection and cover open detection

N PID PWB Manual paper entry detection

bias voltage supply

R Mark sensor PWB Drum marking point detection

3 – 4

5. Sensors and switches

2 3 5 4 6

2224 25 26 2120

No. Signal name Name Type Operation, function

1 TCS Toner density control sensor Transmission sensor HIGH when toner density falls. 2 ILSW Front cabinet open/close switch Interlock switch ON when closed. 3 MSW Power switch Seesaw switch 4 TH Fusing heater thermistor Thermistor Greater resistance at low

temperature

5 TS Fusing heater thermostat Thermostat Contact open at abnormally high

temperature

6 POD Paper exit paper sensor Transmission photo sensor LOW when paper is present. 7 MHPS Mirror home position sensor Transmission photo sensor HIGH when paper is sensed. 8 MMRE Main motor encoder Transmission photo sensor Rotation pulse output 9 TFD Waste toner full switch Lead switch HIGH when sensed. F LHPS Lens home position sensor Transmission photo sensor LOW when reduction. G PPD Paper transport sensor Transmission photo sensor LOW when paper is present. H 1 CSD0 ∼ 2 Body upper tray paper size detection Tact switch Shorted when the switch is turned on. I 2 CSD0 ∼ 2 Body lower tray paper size detection (SF-2118) Tact switch Shorted when the switch is turned on. J 3 CSD0 ∼ 2 Option upper tray paper size detection Tact switch Shorted when the switch is turned on. K 4 CSD0 ∼ 2 Option lower tray paper size detection Tact switch Shorted when the switch is turned on. L PED1 Body upper tray paper presence detection Transmission photo sensor HIGH when paper is present. M PED2 Body lower tray paper presence detection (SF-2118) Transmission photo sensor HIGH when paper is present. N PED3 Option upper tray paper presence detection Transmission photo sensor HIGH when paper is present. O PED4 Option lower tray paper presence detection Transmission photo sensor HIGH when paper is present. P Motor sensor 2 Body lower stage paper feed motor encoder sensor

Transmission photo sensor Rotation pulse output

(SF-2118)

Q Motor sensor 3 Option upper paper feed motor encoder sensor Transmission photo sensor Rotation pulse output R Motor sensor 4 Option lower paper feed motor encoder sensor Transmission photo sensor Rotation pulse output S DPPD1 Body upper tray paper transport sensor Transmission photo sensor LOW when paper is present. T DPPD2 Body lower tray paper transport sensor (SF-2118) Transmission photo sensor LOW when the side door is open

and paper is present.

U DPPD3 Option upper tray paper transport sensor Transmission photo sensor LOW when the option door is open

and paper is present.

V DPPD4 Option lower tray paper transport sensor Transmission photo sensor LOW when the option door is open

and paper is present.

W PID Single manual feed paper entry sensor Transmission photo sensor HIGH when paper is present.

3 – 5

6. Rollers, mirrors, etc.

30 29 28

20 19 18 3 4 17 7 34 16

5 8 14

31 27 26 25 24 23 22 21 43 42 41

38 40

No. Name No. Name No. Name

1 No. 3 mirror 2 No. 2 mirror 3 No. 1 mirror 4 Copy lamp 5 No. 4 mirror 6 No. 5 mirror 7 No. 6 mirror 8 Developing unit toner box 9 Manual tray F — G Take-up roller (SF-MF15 only) H Paper feed roller (SF-MF15 only) I Reverse roller (SF-MF15 only) J PS front roller follower roll

(SF-MF15 only)

L Developing unit M Blank lamp N Main charger unit O Photoconductor drum P Cleaner unit Q Resist roller follower roll R Resist roller S Transfer charger T Separation charger U Drum separation pawl V Suction unit W Suction belt X Fusing thermistor Y Heater lamp Z Upper heat roller [ Lower heat roller \ Transport roller (upper) follower roller ] Transport roller (upper) ^ Developing magnet roller _ Tray paper feed roller ‘ Tray paper feed reverse roller a Tray paper feed take-up roller b PE actuator c Transport roller (lower) (SF-2118) d Transport roller (lower) follower roller

(SF-2118)

g Tray paper feed take-up roller

(SF-2118)

@ Since \, ], _ ~ g are the same as in the SF-C M 15 (option), they are omitted. @ The above figure shows the machine with the SF-MF15 installed.

e Tray paper feed reverse roller

(SF-2118)

K PS front roller (SF-MF15 only)

f Tray paper feed roller (SF-2118)

3 – 6

[4] UNP ACKING AND INSTALLATION

1. Unpacking

2 Avoid high temperature and high humidity, and avoid sudden

temperature change. (Avoid installation near a cooler or a heater.) If not, paper absorbs moisture and dew forms in the machine, causing paper jam or degraded image quality.

(Standard condition): The best condition to use the machine.

20 ∼ 25 °C, 65±5% RH

(Temperature and humidity): 15 ∼ 30 °C

85 65

20% ∼ 85% RH 35 °C for 65%

Humidity

Packing material /accessory list

Name Q’ty 1 Paper exit tray 1 2 Instruction Manual 1 3 Maintenance card 1 4 Dust cover 1 5 Service contract 1 6 Installation manual 1 7 Magnification select label 1

2. Installat ion

Install a ti on c onditions

The surrounding conditions of the machine affect the machine performance gr eatly. U se great care for the following items:

(1) Environm en t

1 Avoid direct sunlight, and avoid installation near the window.

(Curtains or blinds must be shut completely.) If not, the plastic parts and the original cover may be deformed. Even if the window is of frosted glass, there is no difference.

15 30 35

3 Avoid dusts and vibrations.

If dusts enter the machine, malfunctions may occur.

4 Avoid installation to an unstable place.

Keep the machine in horizontal state to maintain the performances.

˚C

4 – 1

5 Avoid installation to a poorly ventilated place.

6 Avoid installation to a place where there are flammable materials

or ammonia gas, etc. If the machine is installed near a diazo copier, the picture quality may be degraded and malfunctions may occur.

(5) Grounding wire connection

1 Connect the grounding wire to prevent against a danger. 2 When connecting the grounding wire, connect only to the ground-

ing object (the grounding terminal of the power outlet, etc.) and never connect to a gas pipe.

Grounding terminal

7 Install near a power outlet.

(2) Space around the machine

Install the machine with its rear side about 10cm apart from the wall in order to allow space for ventilation by the cooling fan. Also allow eno ug h space around th e ma ch ine for proper operation.

(3) Installation base

Set the machine in horizontal position in the following procedure. Be sure to use a le veling instrumen t (UKOGM0054CSZZ) to install the machine on a flat, horizontal place.

[Note] If the machine is not in horizontal position, the toner density

control function may not work normally, resulting in degraded picture quality.

(4) Power sou rc e

1 Use the power source of the rated capacity. 2 Avoid complicated wiring. If not, the breaker or the fuse may be

blown off to cause a fire.

4 – 2

3. Optical system lock release

4. Charger cle ani ng

A. No. 2/3 mirror unit lock release

Remove the one fixing screw of the No. 2/3 mirror unit on the let side of the copier.

Mirror unit fixing screw

B. Lens and No. 4/5 mirror unit lock release

Remove two fixing screws of the No. 4/5 mirror unit on the right side of the copier, Open the fr ont cabinet and r emove one fixi ng screw of the lens on the lower side of the operation panel.

A. Main charger unit electrode cleaning

1 Press the hook section of the main charger unit to release lock,

and pull out and remove the main charger unit from the copier.

Hook

Main charger unit

2 Remove one fixing screw of the main charger unit (on the back

side).

Fixing screw

Electrode section

Lens fixing screw

Main charger un i t

3 Press the electrode cleaner onto the tips of the electrode so that

the tips are inserted into the cleaner a few times to clean.

[Note] Do not move the cleaner back and forth with the electrode

tips inserted into it.

Mirror unit fixing screw

Electrode cleaner

Electrode section

4 – 3

4 Return the electrode section to the original position and fix it with a

screw.

5 Insert the main charger unit along the guide groove in the copier

fully to the bottom.

3 Remove three fixing screws of the toner hopper of the developing

unit, and remove the toner hopper.

Fixing screw

Toner hopper

Main charger unit

5. Developing nit set tin g

A. Developing unit setting

1 Open the front cabinet, remove the installation toner fixed to the

developing unit lever with tape, and pull the developing unit lever toward you.

Developing unit lever

Installation toner Fixing tape

Front cabinet

2 Hold the grip of the developing unit, and slowly pull out the

developing unit until it stops. Then hold the hand carry strap and press the developing lever,

and remove the developing unit.

Developing unit

4 While supplying developer from the developer supply port of the

developing unit, turn the MG gear clockwise with a screwdriver or a scale to supply fully in the developing unit.

Developer

Developer supply port

Developing unit

MG gear

Developing unit

5 Install the toner hopper to the developing unit and fix it with two

screws.

Fixin g scr ew

Toner hopper

Fixing screw

DV lever

Developing unit

Hand carry strap

Developing unit

Grip

4 – 4

6 Hold the hand carry strap of the developing unit and insert it into

the copier fully to the bottom.

Hand carry strap

7. Accessor y i nst all ation

A. Copy tray installation

Install the copy tray to the paper exit section on the left side of the copier.

Developing unit

7 Close the developing unit lever and close the front cabinet.

Grip

Developing unit lever

Front cabinet

With the above procedure, setting of the developing unit is completed.

6. Toner density sensor level adjustment

Copy tray

8. Toner supply

Toner cartridge tone r supply

1 With the sheet surface of the toner cartridge facing upward, shake

the cartridge right and left several times.

Sheet surface

Toner cartridge

Turn on the copier power switch.

A. Developing unit level adjustment

1 Execute simulation 25.

2 After 3 minutes, simulation 25 is completed.

[Note] If the simulation is terminated halfway, automatic reading is

not performed. Do not terminate it halfway.

3 Cancel simulation 25 with the CA key.

2 Install the toner cartridge to the toner hopper of the developing

unit, and slide it toward you until it clicks. Be careful not to place toner one-sidedely in the toner cartridge.

Toner cartridge

4 – 5

3 Hold the grip of the toner hopper shutter, and slowly pull out the

shutter fully toward you. If the shutter won’t move, the procedure in 2 may have not

performed properly. In that case, slide the toner cartridge again toward you until it clicks.

Shutter

Grip

6 Slide the toner cartridge to the bottom and remove it slowly.

If the shutter have not been pushed completed in procedure 5, the toner cartridge cannot be slid. In that case, push the shutter completely and slide and remove the cartridge.

Toner cartridge

4 While pressing the toner cartridge securely, strongly pull the toner

cartridge sheet toward you. This will supply toner into the toner hopper. The toner cartridge sheet must be removed completely.

Then tap the top of the toner cartridge several times to feed toner.

Toner cartridge

Sheet

5 Hold the grip of the toner hopper shutter and slowly push the

shutter completely to the bottom.

Shutter

7 Hold the grip of the developing unit, and insert the developing unit

slowly to the bottom.

Developing unit

Grip

8 Close the developing unit lever, and close the front cabinet.

Grip

Developing unit lever

Front cabinet

4 – 6

9. Center shift adjustment

10. Label attachment

There is basically no need to perform the center shift adjustment because it is made when shipping. If the center should be shifted, adjust in the following procedures.

Make a c opy. If the center is shifted as shown in Fig. 1 or Fig. 2, loosen the four screws which are fixing the cassette grip cabinet.

Section b

Section a

Direction A

Section b

Section a

Direction B

[Note] When fixing the cassette cabinet, the fixing screws and the

cabinet clearance a and b are in symmetry.

Section b

Section a

A. Label attachment

Attach the magnification select label packed together with the Operation Manual to the position shown in the figure below.

• When attaching the label to the copier with the original cover.

Magnification ratio select label

• When attaching the label to automatic original feeder (SF-A15)

(1) Fig. 1 Move the cassette grip cabinet in direction A, tighten two fixing

screws (a) and two fixing screws (b) in this sequence. Make a copy again and check the center.

[Fig.1]

Paper center line

Image center (First image)

(2) Fig. 2 Move the cassette grip cabinet in direction B, tighten two fixing

screws (a) and two fixing screws (b) in this sequence. Make a copy again and check the center.

Magnification ratio select label

[Fig.2]

Paper center line

Image center (First image)

4 – 7

11. Optional two- stage paper feed unit (SF-CM15) installation

Parts packed together

3 The following procedure must be performed by two persons.

Hold the grips of the copier, and insert the positioning bosses (2 positions) of the two-stage paper feed unit into the positioning holes (2 positions) on the bottom of the copier. Then put the four legs of the copier on the two-stage paper feed unit.

Grip

Connec tion adjustment plate x 1 pc.

Connection screw A x 2 pcs.

Connection screw B x 1 pc.

Connection screw C x 2 pcs.

Disconnect the power plug of the copier and perform the following procedures.

1 Remove two screws which are fixing the rear cabinet on the lower

stage of the copier, and remove the rear cabinet.

Rear cabinet

Fixin g scr ew

Positioning boss

4 While lifting the lower stage tray slightly, pull it out until it stops.

Then hold the both sides of the tray and lift and remove it.

5 Attach the connection adjustment plate as shown in the figure and

fix it with two screws A. Then fix the left side with screw B. Install the paper tray which was removed in procedure 4 to the copier.

Positioning boss

2 Remove the notched section of the lower stage of the copier.

Notched section

4 – 8

Connection screw B

Connection adjustment plate

Connection screw A

Connect the rear side of the copier with two connection screws C.

Connection screw C

6 Remove the connecter which is fixed to the rear cabinet of the

two-stage paper feed unit with tape. Connect the 4P connector and 10P connector with the 4P connector and 16P connector of the copier.

12. Optional multi paper feed unit (SF0MF15) installation

Disconnect the power plug of the copier and perform the following procedures.

1 Open the front cabinet of the copier and lift the upper unit slowly

with the open/close lever.

4P connector

16P connector

4P connector

Fixing tape

7 Install the rear cabinet which was removed in procedure 1 to the

original postilion, and fix it with two screws.

Rear cabinet

Body open/close lever

Upper unit

Front cabinet

2 Remove two fixing screws of the right cabinet, and remove the

right cabinet. The two removed screws are used for installation of the multi paper feed unit to the copier.

Right cabinet lower

Fixing screw

8 Adjust according to "9. Center shift adjustment" in [4] UNPACK-

ING AND INSTALLATION.

Fixing screw

* Keep the right cabinet, which is required when the multi paper feed

unit is removed.

4 – 9

3 Insert the positioning pins of the multi paper feed unit into the

installation holes of the copier. At that time, first insert the rear pins, then insert the front pins. (Check that the multi paper feed unit connecting pins are properly connected.) Then fix the multi paper feed unit with the two screws which were removed in procedure (2).

Rear side

Positioning pin

Installation holes

Fixing screw

Multi paper feed unit

13. Tray paper size selection (Explained with the SF-2118.)

Either of the upper and lower trays allows setting of the paper size as shown in t he fi gu re. To select the d esi red s ize, fol low the proc ed ures below. (A5 size is handled as the special size. The factory setting is A3: 11″ × 17″ size.)

1. Fit partitioning plates A and B in the tray to the

vertical and horizontal sizes according to the paper s i ze .

Fit the plates to the scales of the paper size. Partitioning plate A is of slide ty pe. Hold the fixing knob a nd slide partitioning plate A to the sc ale. Partiti oning plat e B is of in sertion type . Remove it and ins ert to the scale po sit i on .

Lever

Positioning pin

Front side

4 With the above procedure, the multi paper feed unit installation is

completed.

* Clo se th e uppe r uni t slow ly and c lose t he fr ont cab inet. The mul ti

paper feed unit mode is automatically set.

Left guide

Front guide

2. Remove the tray.

Pull out the tray fully toward you, and tilt it upward to remove.

4 – 10

3. Remove the size block upward, and attach it to the selected size.

Attach the size block according to the selected size as shown below:

Paper size block

(Inch series) (AB series)

11" x 17"

x 11R 8-1/2

8-1/2" x 5-1/2"

EXTRA

Top view from front side

11x17

8-1/2 x 5-1/2

8-1/ 2" x 14 " 8- 1/ 2" x 11 "

x 11

8-1/ 2

8-1/2

x 14

8-1/2" x 11"R

8-1/2

x 11R

x 14

8-1/2

EXTRA

x 5-1/2 8-1/2

8-1/2

x 11

EXTRA

(Note)

• When the tray paper size is changed, be sure to adjust the size

block. If not, the paper size display remains unchanged. (The previous size is displayed.)

4. Attach the tray.

Reverse the removing procedure. That is, tilt the tray upward and insert into the body. Then push it in horizontally.

Extra

A3 B4

A4R

EXTRA

B4 A4

B5 A4R

R R

B5R

5. Set the papers on the tray, and select the display of the paper size display slit.

Remove the paper size display plate, and insert it according to the selected paper size so that the paper size indication can be seen from the display slit. When A5 size is selected, display "Special."

Paper size plate

4 – 11

[5] DESCRIPTIONS OF EACH SECTION

Descri ptions are made on the following sections:

1 Paper feed section 2 Developing section 3 Optical section 4 Process section 5 Separation/transport section 6 Fusing/paper exit section 7 High voltage section

In the case of SF-2118:

The SF-2118 is provid ed with the thr ee-way pa per fe ed syst em. Th e tray is of the universal t y pe an d has cap ac it y o f 2 50 sheets. Th e front loading system allows the tray to be loaded from the lower side of the front cabinet. (The SF-2116 ha s the two-way pape r feed system with one 250-sheet tray and ma nual feed.) Manual pa per feed is in the sin gle mode. The mu lti paper feed un it (SF-MF15) is an option. The tray has the capacity of 500 sheets (250 sheets for the SF-2116). In addi tion to that, th e option al paper feed uni t allows loading o f 500 sheets more.

2) Basic operati ons

(Tray paper feed operat ion)

When the CPFC (Cassette paper feed clutch) turn on, the paper feed roller shaft, t he paper fe ed roller, and the ta ke-up roller rotat e in the direction of A. At the same time, the limiter spring moves down the roller release arm. As a result, the take-up roller falls by its own weight onto the paper su rface, starting paper feed .

Roll er r elease arm

Take-up roller

1. Paper feed secti on

1) General descriptions

To r ealize th e compact design, t he front l oading system and the fo ldable multi paper feed unit (option) are employed. Use of t he optional tw o- s ate paper fee d un it and the spar e tr ay allo w s a varie ty of sy st e m co nf i gu r ations. (System configuration) Example with the SF-2118:

SF-2118

Sheet

250 sheets 250 sheets

SF-CM15

(Two-step paper feed unit)

50 sheets

SF-MF15(Multi paper feed unit)

250 sheets

SF-UB15

(Spare tray)

Paper f eed ro l l er

Paper feed roller shaft

When the CPFC turns off, rotation stops and the take-up roller is pushed up to the original position by the roller release arm spring.

(Single manual paper feed operation)

There is no special mechanism for manual paper feed other than the manual feed paper sensing actuator and the paper guide.

(Multi manual paper feed operation)

When the MPFS (multi paper feed solenoid) turns on, the spring clutch rotates to pr ess the take- up roller on t he paper, feeding the paper.

5 – 1

2. Developing secti on

1) General descriptions

(1) Two-component developer

The developer is composed of toner and carrier. Carrier serves as a me dium for attachi ng ton er onto the ele ctrostat ic image on the photoconductor drum. By stirring toner and carrier, they are rubbed to be charged positive (+) and negative (–) respectively. Since deve loper will deter iorate to degra de copy quality, it shou ld 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 b rush on the sleev e surface by magn etic 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 ), th e surfac e poten tia l (volt ag e) of the p ho tocon duct or w ill no t be lost completely. (The residual potential remains.) Toner is attracted to the photoconductor by this residual potential, dirty ing the phot oconductor. As a r esult, a dirt y copy of whi te background is generated. To prevent ag ainst 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 photocondu ctor surface .

(Detail s of DV harness co nnect or)

For color identification

GND

Resistor

*For toner density sensor

GND

*Resistance value is identified by color

2) Basic composition

For bias

Residual potent i al < D V B IAS

MG rolle r

DV BIAS

Toner

Carrier

Devel opi ng bia s v olt age

-200V

(4) DV harness

The toner density sensor, the developing bias, and the developing unit identification resistance harness. (For details, refer to [6] DISASSEMBL Y AND ASSEMBLY.)

(View ed fr om th e rear of devel oi ng uni t )

3 5

No. Name

Magnet roller Forms a magnetic brush of carrier

Developing doctor blade Limits the height of the magnetic

Developing MIX roller Stirs carrier in the developing unit

Toner transport roller Transport toner sent from the

Toner density sensor Senses toner density in

by magnetic force.

brush.

and distributes toner evenly.

toner hopper unit to the stirring section.

developer.

DV har ness c onnec t or

5 – 2

3) Basic operations

(Cassette paper feed)

When t he CPFC (cassette paper feed clutch) is turned on, the paper feed roller shaft, the paper feed roller, and the take-up roller rotates in the dire ction of A, an d the r oller re lease arm is moved downwa rd by the limiter spring. As a result, the take-up roller falls by its weight to reach the paper surface, feeding the paper. When the CPFC is turned off, the take-up roller is pushed up to the position by the roller release arm spring.

(3) Optical section

Stirring roll er

MG roller

Transport roller(upper)

Transport roller(lower)

DV drive unit

PS roller

Multi manual insertion paper feed unit (Option)

Paper fe ed unit

Proccess unit

Paper feed rive unit

Main drive unit

Cleaner unit

Transport unit

Main motor

Fuser unit

Paper ex it roller

1. General description

• The optical section of this model is composed of the fixed focus

lens and six mirrors. Since the fixed focus lens is used, No. 4/5 mirror base is shifted according to the shift of the lens to change the distance between the original and the drum (OID, Original Image Distance) in reduction or enlargement copy. The lens and No. 4/5 mirror unit are shifted by driving the stepping motor with the signals from the main control PWB, allowing zooming of 151 steps in 1% increment in the range of 0.50 to 2.00.

5 6 910

• Exposure is adjusted by changing the copy lamp voltage. The AE

sensor is provided in the zoom base to sense the density of the original. The copy lamp light is reflected by the original to the AE sensor, which senses the density of the original and adjust the copy lamp light quantity according to the density.

• The exposure system is the slit exposure system by moving light

source.

151 2

14 8 12

711 1316 4

Copy lamp

No. 2 mirror

No. 4 mirror

No. 2/3 mirror base unit

Mirror motor

Mirror home position sensor

Reflector

No. 3 mirror

No. 5 mirror

Copy lamp unit

Lens/No. 4/5 mirror base drive motor

Automatic exposure (AE) sensor/

Optical system dirt sensor

5 – 3

No. 1 mirror

Lens

No. 6 mirror

No. 4/5 mirror base unit

Lens home position sensor

(1) Original table

The original table is fixed. The original is set in the left center position.

Mirror base sc an spe ed is chang ed f o r zoomi ng

Enlargment

(2) Copy lamp

100V s eries: 85V, 275W 200V series: 170V, 310W

(3) Mirror

This model uses six mirrors. No. 1 mirror is attached to the copy lamp unit, No. 2/3 mirrors are attached to No. 2/3 mirror base, No. 4/5 mirrors are attached to No. 4/5 mirror base. The copy lamp unit and th e No. 2/3 mir ror base unit are scanne d in copying. The No. 4/5 mirror base is shifted in zoom copying to change the distance between ten original and the drum.

(4) Lens (fixed focus lens)

• Construction (1 group 3 lenses)

• Brightness (F8.5)

• Focus: (195mm ±1%)

(5) Lens home position sensor (LHPS)

This sens or sen ses the le ns home position . The out put sign al of thi s sensor is the basic signal to control the copy magnification ratio.

(6) Lens base

The lens is mounted to the lens base, which is shifted toward the paper feed direction in reduction copy or toward the paper exit direction in enlargement copy by the lens drive motor.

Copy direction

Normal

Zooming b y c hangi ng th e le ns and mirror positi on

Original

Reduct i o n

5 – 4

Parts identification and functions

Mirror home position sensor

No. 2/3 mirror un it

Copy lamp unit

Lens drive wire

Reflector

Copy lamp

Lens home position sensor

AE sensor

Lens No. 4/5 mi rr or uni t drive motor

Mirror motor

No. 4/5 mirr or uni t

Lens

Lens unit

Mirror base wire Tempera t ure fuse

(7) Lens drive shaft

This shaft controls the optical axis of the lens in zoom copy. The lens follows along the slide base shaft.

(8) Lens drive wire

This is to shift the lens unit and the No. 4/5 mirror base.

(9) No. 4/5 mirror unit

No. 4/ 5 mirro rs a re a ttach ed t o this unit. It is shif ted by the le ns driv e motor to change the distance between the original and the drum according to the zooming ratio.

(10) Mirror m otor

This st epping motor shifts the co py lamp unit and the No. 2 /3 mir ror base. It is rotated at the rpm according to each zooming ratio.

(11) M irror home position sensor (MHPS)

This sensor senses the home position of the copy lamp unit. It is of light t r ansmission ty pe.

(12) No. 2/3 mirror unit

No. 2/3 mirrors are attached to th is unit. It is scann ed by the mirror motor.

(13) Copy lamp unit

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

(14) Temperature fuse

This is attached closely to the reflector to prevent against abnormal temperature rise in th e optic al syste m. If the temperatu re ri ses a bnormally, it turns off the copy lamp power directly. 100V s eries (117°C) 200V s eries (117°C)

(15) Reflector

Light from the copy lamp is reflected by the reflector to the original.

(16) Exposure adj ustment plate

Four exp osure adjust ment plat es are attac hed to the copy lamp unit to adjust exposure balance in back and forth direction of the frame.

(17) Mirror base drive wire

This wire transmits the m irror motor p ower to th e copy lamp unit and the No. 2/3 mirror base to scan the mirror base.

(18) Lens drive m ot or

This stepping motor drives the lens and the No. 4/5 mirror base.

(19) AE sensor

This AE sensor senses the original density by the light emitted from the copy l am p a nd r ef lec te d by the orig ina l, c on tr o llin g the develop ing bias. The photometric area is about 100m width at the center and in the mirr or base scannin g direction. The element is photo diodes.

5 – 5

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