TOSHIBA 1550 SERVICE HANDBOOK

SERVICE HANDBOOK

PLAIN PAPER COPIER

PAPER FEEDING UNIT

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1550

MY-1004

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GENERAL PRECAUTIONS REGARDING THE INSTALLATION AND THE SERVICE OF THE 1550/MY-1004

1. Transportation/Installation

• When transporting/installing the copier, using two persons, be sure to use the positions as indicated below. The copier is fairly heavy and weighs approximately 35 kg (76.8 lb), therefore pay full attention when handling it.

4 portions

2. Installation

• Be sure to use a dedicated outlet with AC 115V/15A (220V, 240V/10A) or more for its power source.

• The copier must be grounded for safety. Never ground it to a gas pipe or a water pipe.

• Select a suitable place for installation. Avoid excessive heat, high humidity, dust, vibration and direct sunlight.

• To insure adequate working space for the copying operation, keep a minim um clearance of 80 cm (31.5”) on the left, 80 cm (31.5”) on the right and 10 cm (3.9”) in the rear.

3. Service of Machines

• Basically, be sure to turn the main switch off and unplug the power cord during service.

• Be sure not to touch high temperature sections such as the exposure lamp, the fuser unit, the damp heater and their periphery.

• Be sure not to touch high-voltages sections such as the chargers and the high-voltage transformer.

• Be sure not to touch rotating/operating sections such as gears, belts, pulleys, etc.

• When servicing the machines with the main switch turned on, be sure not to touch live sections such as the lamp terminal etc.

• Use suitable measuring instruments and tools.

4. Main Service Parts for Safety

• The thermofuse, thermistor, fuse, breaker and door s witch, etc. are particularly important for safety. Be sure to handle/install them properly.

5. Notice Labels

• Be sure to check the rating plate and the notice labels such as “Unplug the power cord during service”, “Hot area”, etc. to see if there is any dirt on their surface or if they are properly stuck to the copier during servicing.

6. Disposition of Consumable Parts/Packing Materials

• Regarding the recovery and disposal of the copier, consumable parts and packing materials, it is recommended to follow the relevant local regulations or rules.

7. When parts are disassembled, reassembly is basically the reverse of disassembly unless otherwise noted in this manual or other related documents. Be careful not to reassemble small parts such as screws, washers, pins, E-rings, toothed washers in the wrong places.

8. Basically, the machine should not be operated with any parts removed or disassembled.

1. ADJUSTMENT ITEMS

1.1 Error Code Table

When the “CLEAR PAPER” or “CALL SERVICE” symbol is flashing, pressing the “CLEAR/STOP” key and the “8” key simultaneously causes one of the following error codes to be displayed while the keys are pressed.

(1) Paper misfeeding in the copier paper path

Error code Content Remarks

E01 Paper misfeeding inside the copier Bypass misfeeding is also included.

(Bypass feeding LED comes ON.)

E02 Paper misfeeding in the neighborhood

of the fuser

E03 Paper misfeeding inside the copier when

the power is turned on.

E05 Non-arrival-at-aligning-switch misfeed- After the paper fed from PFU has passed

ing the transport roller or fed from PPC?

(2) Paper misfeeding in the paper feeding section

Error code Content Remarks

E14 Lower cassette paper misfeeding (PFU) Paper does not arrive at the transport roller.

(3) Paper misfeeding in the ADF transport path

Error code Content Remarks

E71 Misfeeding in the ADF original feeding

section

E72 Midfeeding in the ADF original transport

section

E73 Misfeeding in the ADF original exiting

section

E75 2 in 1 (2nd-original misfeeding in the

feeding section)

1 - 1Oct. 1995 © TOSHIBA CORP. 1550 ADJUSTMENT

(4) Paper misfeeding in the sorter transport path

Error code Content Remarks

E81 Paper delaying jam in the sorter Paper does not arrive at the entrance

transport path sensor.

E82 Paper staying jam in the sorter Paper stays at the entrance sensor.

transport path.

(5) Service call for the copier’s drive system

Error code Content Remarks

C01 Abnormal operation of the main motor

(6) Service call for the optical system

Error code Content Remarks C21 Optical system initialization error Scanning, lens or mirror abnormal operation. C22 Optical system initialization error When the lens is moved in the paper exit

direction at the time of the start of initialization,and only if it is not detected by the switch.

C26 Blown exposure lamp detection

(7) Service call for the process system

Error code Content Remarks C32 Easy setup (UA mode) error

(8) Fuser unit related

Error code Content Remarks

C41 Abnormal thermistor or broken heater

when the power is turned on.

C43 Abnormal thermistor during warming up. C44 Heater breakage after the copier

becomes ready.

(9) Communication related service call

Error code Content Remarks C54 Abnormal communication between the

C55 Abnormal communication between ADF

1550 ADJUSTMENT

sorter and the main CPU

and the main CPU

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Oct. 1995 © TOSHIBA CORP.

(10) ADF related

Error code Content Remarks C71 Locked ADF main motor ADF jam LED is flashed. C72 Maladjusted aligning sensor detection ADF jam LED is flashed. C73 Faulty EEROM initialization ADF jam LED is flashed .

(11) Sorter related service call

Error code Content Remarks C81 Abnormal paper transport motor C82 Abnormal bin-moving motor C83 Upper limit error C84 Lower limit error C85 Home sensor error C88 Copy-removal sensor error

(12) Service call for other abnormalities

Error code Content Remarks C94 Faulty optical system initialization in The content is similar to C21 error.

special modes (CH, AJ).

1 - 3Oct. 1995 © TOSHIBA CORP. 1550 ADJUSTMENT

1.2 Self-Diagnostic Mode

Keys pressed

simultaneously

0+1

0+2 Aging mode Aging “09”

0+3 Test mode “09”

0+5 Adjustment mode Various adjustments “09” 0+6 Forced ready mode Forces the copier to become ready. — 0+7 Aging mode Aging (with ADF) “09”

0+8 Setting mode “09”

All control-panel LEDs ON mode

Mode Description Clearing

All LEDs on the control panel come on.

Motor test and input/output check (including initialization)

Motor test and input/output checkTest mode0+4 “09”

System changing and setting defaults and PM counter

“Clear/Stop” key

Note: How to access each mode:

While pressing the two keys for the mode to access (ex. “0” and “5” for the adjustment mode), turn on the main (power) switch.

• All control-panel LEDs ON mode (01) :

Indication

—

AJ —

Power

All control-panel LEDs come on C/S Clear

• Aging mode (02) :

Power

Aging operation

C/S 0 9 Clear

• Test mode (03 or 04) : For this mode, refer to the “Input/Output Check” on page 1-6.

• Adjustment mode (05) : For this mode, refer to the “Adjustment Mode” on page 1-9.

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Oct. 1995 © TOSHIBA CORP.

•Forced ready mode (06) :

Power

Forced ready status

Note: This mode should be used only when checking paper feeding operation.

•Setting mode (08) : For this mode, refer to “Setting Mode” on page 1-12.

Self-diagnostic mode progress diagram :

Power ON

“06”

Warming up

Stand-by

“C”

All control-panel LEDs ON

“01”

“05”

“02”

“07”

Aging

“P”

Temporary stop

“C”

“03/04”

Test mode

“09”

“05”

Adjustment mode Setting mode

“08”

“09” “09”

“P” : Press PRINT. “C” : Press CLEAR/STOP.

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1.2.1 Input check (Test mode 03/04)

In the 03 or 04 test mode, you can check the status of each of the following input signals by pressing the corresponding keys.

DARKLIGHT AUTO

Input value

2 ————

EXP1

————

—

EMP-SW

(No paper)

RGT-SW

(Paper

present)

—

( ) means that LEDs come on.

EXP2

CTR-CNT (No CTR)

EXIT-SW

(Paper

present)

CST2

(No cassette)

—

——

EXP3

HTR-RDY

(Not ready)

TNR-FUL

(Normal)

EMP-SW2

(No paper)

Paper width

sensor 2

(ON)

Removal

sensor

(ON)

Paper width

EXP4 EXP5 EXP6

DF-CNT (No DF)

————

FED-SW

(Paper

present)

sensor 1

(ON) Limit

sensor

(ON)

PFU cover

switch (open)

S-CNT

(No sorter)

SIZ03 (OFF)

SIZ13 (OFF)

Empty sensor

(ON)

Bin-home

sensor

(ON)

Developer unit switch

(none)

MRR-HOM

(Home

position)

SIZ02 (OFF)

SIZ12 (OFF)

Open sensor

One-rotation

sensor

(ON)

EXP7 EXP8

Main motor

PLL

(NG)

LNS-HOM

(Home

position)

SIZ01 (OFF)

SIZ11 (OFF)

Exit sensor

(ON)

Paper-on-tray

sensor

(ON)

—

CRG-HOM

(Home

position)

SIZ00 (OFF)

SIZ10 (OFF)

Aligning

sensor

(ON)

Entrance

sensor

(ON)

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Power

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Nemeric keys

LED ON

Oct. 1995 © TOSHIBA CORP.

1.2.2 Output check mode (Test mode 03/04)

In the 03 or 04 test mode, you can check the status of each of the output signals by entering the following corresponding code.

Code

1 Main motor 2 Feed roller clutch (copier) 3 Aligning roller clutch (copier) 6 Toner motor 7 Optics fan 8 Exit fan 9 Pick-up roller clutch (copier)

10 Total counter Increases at each “P” key press.

20 Scanning motor At 1st “P” key press, scans forward and backward at 2nd press. 21 Lens motor At 1st “P” key press, moves to 50% position and to 200%

22 Mirror motor At 1st “P” key press, moves to 50% position and to 200%

30 HVT-M 31 HVT-TR 32 HVT-AC 33 Exposure lamp If forced on for 5 sec., it goes off. 61 PFU motor (PFU) 62 Pick-up roller clutch (PFU) 63 Feed roller clutch (PFU) 64 Aligning roller clutch (PFU) 80 DF independent aging At 1st “P” key press, starts and stops at 2nd press. 82 DF pick-up roller rotation

Function Code Function Group

64444474444448

position at 2nd press.

64748 64474448

At 1st “P” key press, comes on and goes off at 2nd press.

11 Main motor 12 Feed roller clutch (copier) 13 Aligning roller clutch (copier) 16 Toner motor 17 Optics fan 18 Exit fan 19 Pick-up roller clutch (copier)

71 PFU motor (PFU) 72 Pick-up roller clutch (PFU) 73 Feed roller clutch (PFU) 74 Aligning roller clutch (PFU)

644444444474444444448

64444474444448

OFF

64474448

OFF

83 DF aligning roller 84 DF transport belt rotation 85 DF pick-up roller rotation/Weight solenoid 86 DF weight solenoid 87 DF clutch 90 Sorter transport motor 91 Sorter bin motor 92 Sorter aging without paper At 1st “P” key press, starts and goes off at 2nd press.

*1: Scanning motor rotates at the preset reproduction ratio.

At 1st “P” key press, comes on and stops at 2nd press.

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Group 1

03/04

Power supply

Group 2

03/04

Power supply

Group 3

03/04

Power supply

Code Print

Operation

(one direction)

Operation

(ON)

Stop code

Print 09 Warm up

C/S

Oparation

OFF

Test mode standby state Warm up

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Oct. 1995 © TOSHIBA CORP.

1.2.3 Adjustment mode (AJ: 05)

In this adjustment mode, the following items can be adjusted or modified. (Refer to the adjustment code list.) The adjustment mode can be accessed b y turning on the power while pressing the “0” and “5” keys simultaneously.

Code Description

0 Automatic auto-toner adjustment — — Set to 24. 1 Manual exposure 100% 0~255 128 The larger, the lighter. 2 Manual exposure 154% 0~255 128 The larger, the lighter. 3 Manual exposure 50% 0~255 128 The larger, the lighter. 4 Manual exposure 200% 0~255 128 The larger, the lighter. 5 Auto-exposure 100% 0~255 128 The larger, the lighter. 6 Auto-exposure 154% 0~255 128 The larger, the lighter. 7 Auto-exposure 50% 0~255 128 The larger, the lighter. 8 Auto-exposure 200% 0~255 128 The larger, the lighter.

9 Exposure (light) Inclination 0~255 255

10 Exposure (dark) Inclination 0~255 0

14 Photo exposure 100% 0~255 128 The larger, the lighter.

Allowable Initial

input value value *1

Content

The larger, the lighter at the light side.

The larger, the lighter at the dark side.

15 Photo exposure 154% 0~255 128 The larger, the lighter. 16 Photo exposure 50% 0~255 128 The larger, the lighter. 17 Photo exposure 200% 0~255 128 The larger, the lighter.

Lengthwise reproduction

ratio adjustment

25 Eraser LED timing adjustment 100%

26 Eraser LED timing adjustment 200% 0~15 8

27 Eraser LED timing adjustment 50%

0~15 8

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Each increase by “1” causes the lenthwise reproduction ratio to increase by 0.1%

Each increase by “1” causes the erased position by LED to shift approx. 1mm toward the trailing edge of the paper. But the image position relative to the paper does not change. (with original surface as reference)

Code Description

Eraser LED leading edge margin

adjustment Eraser LED trailing edge margin

adjustment 35 Margin on the leading edge 36 Margin on the trailing edge

Allowable Initial

input value value *1

0~15 8

0~15 0

Content

Each increase by “1” causes the erased position by LED to shift 1mm toward the trailing edge. (with paper surface as reference)

0:No margin 1–15:Margin present (approx.

1mm/step)

38 Grid bias adjustment 0~255 128 The larger, the larger output. 39 Transfer transformer adjustment 0~255 128 The larger, the larger output. 40 Separation transformer adjustment 0~255 128 The larger, the larger output. 42 Grid bias adjustment (photo) 0~255 121 The value should be 121.

49 Automatic auto-exposure adjustment — — 53 Leading edge (copier; 100%) 54 Leading edge (copier; 200%) 55 Leading edge (copier; 50%) 0~15 8 56 Leading edge (bypass feeding)

Each increase by “1” causes the image to shift 0.80mm toward the paper leading edge.

57 Leading edge position (PFU) 60 Lens position adjustment (100%) 61 Mirror position adjustment (100%)

Each increase by “1” moves toward the exit side.

62 Enlargement correction (200%) 63 Enlargement error ratio (200%)

0~40 20

64 Reduction correction ( 50%) 65 Reduction error ratio ( 50%) 80 Aligning value (PFU) 0~31 8

Each increase by “1” causes the paper to bend more.

81 Aligning value (short size) 0~31 16 82 Aligning value (copier) 0~31 8 83 Aligning value (B5) 0~31 16

Short size: A4/A5-R,LT/ST-R B5: for B5 only The adjustment sequence must be 82

→89→81→83→80.

Each decrease by “1” causes

84 ADF aligning amount 0~15 8

the original stop position to shift about 1mm toward the original scale.

ADF original-to-original gap

(2 in 1 mode)

0~15 8

Each increase by “1” causes the gap between the originals to increase about 1mm.

Each increase by “1” causes

89 Aligning value (middle size) 0~31 16

the paper to bend more Middle size: A4-R/B5-R/FOLIO,

LG,LT-R

90 Auto-toner adjustment 0~255 128

97 ADF EEPROM initialization — —

ADF aligning sensor

automatic adjustment

——

Shows the adjustment value of the auto toner sensor.

*1: The initial value signifies the value set by the NV-RAM initialization program and not the value set at the time

of shipping from the factory.

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July 1996

Oct. 1995 © TOSHIBA CORP.

Power

Code

Adjustment

Automatic auto-toner adjustment

INTERRUPT

Memorize

ENERGY SAVER

Test copy

INTERRUPT

Memorize

Clear

0 Clear

0 Power

Power

97 98

Automatic auto-exposure adjustment

ADF EEROM initialization ADF Aligning roller automatic adjustment

Ends 2 sec. later.

09 Clear

(Possible only after the  automatic adjustment  is completed.)

Clear

1.2.4 Setting mode (08)

In this mode, it is possible to set or modify the various modes shown in the following setting code list.

Code Description

2 Size indication by the carriage 0, 1 1 0: None; 1: Available

4 Automatic sort mode 0~3 0

7 Access control mode 0, 1 0 0: None; 1: Available 8 Version 0~2 Each version 0: EUR; 1: UC; 2: JPN 9 ACT selection (reproduction ratio

in the direction of copy movement) 1: UC

10 Timer mode (auto reset) 0~10 3 (45 sec.) 2: 30sec.; 3: 45 sec.

11 Auto power saving 0~15 0

12 Maximum number of copies 0~3 0 1: Max. 99; 2: Max. 9

Allowable Initial

input value value

0, 1

0: EUR

Content

0: None; 1, 2: Sort; 3: Group

0: 100%; 1: 101%

0: None; 1: 15 sec. 4: 60 sec.; N:

0: None; 1: 30 sec. 2: 60 sec.; 3: 90 sec. 4: 120 sec.; 5: 150 sec. 6: 3 min.; 7: 4 min.

8: 5 min.; 9: 7 min. 10: 10 min.; 11: 15 min. 12: 20 min.; 13: 30 min. 14: 45 min.; 15: 60 min.

0: Max. 999 copies 3: Max. 500

N x15 sec.

13 Paper feeding retry 0,1 0 0: Retry; 1: No retry

14 Cassette priority selection 0~4 0

15 Exposure priority selection 0~2 0

16 A3-size double counting 0,1 0 0: Single count; 1: Double count 17 Bypass auto start 0,1 0 0: Manual start; 1: Auto start

19 Sorter priority selection 0~3 0

20 Pre-run ON/OFF 0~15 0

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0: A4/LT 3: Copier; 4: PFU

0: Auto; 1: Manual 3: Photo mode

0: Non-sort; 1, 2: Sort; 3: Group

0: OFF

N x10 sec.

1~15:

Code Description

21 Auto cassette change 0,1 1 0: None; 1: Available

Allowable Initial

input value value

Content

22 ADF mode 0~5 0 2: AMS; 3: 2 in 1+AMS

23 Thick paper selection at bypass

pre-running

27 ADF’s APS mode 0~2

Pressing PRINT after suspension of

APS/AMS

37 Default sorter key selection 0,1 0 0: Normal; 1: Sort default

38 Heater temperature during power saving 0~7 0 4: 150°C; 5: 160°C

44 All clearing after copying 0,1 0 0: None; 1: Available 51 Easy set-up method (UA mode) 0,1 0 0: No; 1: Yes

52 Quick copy mode 0,1

53 Broken exposure lamp detection 0~2 0

0,1 0 0: None; 1: Available

0: UC

1: EUR

0~2 0 1: 2nd Copying possible

0: EUR

1: UC

0: Manual; 1: APS 4: 2 in 1+APS 5: 2 in

0: Detection for each original; 1: Detection for 1st original only; 2: Prevents copying blank originals

0: 1st copying possible 2: Copying not possible

0: Heater off; 1: 120°C

2: 130°C; 3: 140°C

6: 170°C; 7: 180°C

0: None; 1: Available

0: All exposure modes 1: Auto only; 2: None

54 Coin-vender mode 0,1 0 0: None; 1: Available 58 Reproduction-ratio display time 0~15 0 2+0.2xN sec. 59 LG size 0,1 0 0: 14 inch; 1: 13 inch

62 AMS copy stop switching 0,1 0

63 DF key selection order switching 0,1 → 2in1 + APS → 2in1

69 PM counter setting 0~999,999 0 Other than 0: When set value

79 Current PM counter value 0~999,999 0

0: EUR

1: UC

0: No stop; 1: Temporary stop

0: APS → AMS → 2in1 + AMS 0: APS → AMS → 2in1 + AMS 0:No PM counter; < code 79, PM call occurs.

0 Power

Code

Setting or modifying the value

INTERRUPT

Memorize

Clear

Code Description

89 Heater abnormal counter 0~7 0

Error code Code 89 Timing of the error Cause of the error

C41 1

C43 4 During warming up

Allowable Initial

input value value

Value

When the power is turned on

Content

Abnormal thermistor (disconnection) or broken heater

Abnormal thermistor (disconnection)

C44 6

Absent (normal) 0 --- ---

• When the power is the turned on, if an abnormality occurs, the C41 “CALL SERVICE” symbol will flash, and the value of the setting mode code 89 will be counted up.

• When the Code 89 value is 0~1, rewarming up is performed by turning on the machine again. If the value is 2 or more, “CALL SERVICE” symbol will flash immediately.

• If an abnormality occurs during warming up or the standby mode, C43 or C44 “CALL SERVICE” symbol will flash immediately, and the value of the setting mode code 89 depends on the conditions present at the time of the occurrence.

After the finish of warming up

Broken heater Abnormal thermistor

(disconnection) Broken heater

1550 ADJUSTMENT

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® July 1996

1.3.A Installing the Carriage Drive Wire

(1) Set the wire so that its spherical terminal is

placed in the hole of the wire take-up pulley.

Spherical terminal

Wire takeup pulley

(2) Using the wire holder jig, wrap the wire on the

take-up pulley, 3-1/4 turns of the fixture-side

Wire take-up pulley

end and 5-1/4 turns of the other end.

Wire holder jig

(3) Wrap the wires on the front and rear sides, as shown and fasten them with screws.

[Front side]

Hook (feed side)

Front side wire fixture (Marking “F”)

Hook (feed side)

[Rear side]

Rear side wire fixture (Marking “R”)

5 turns

closely fit

Spherical terminal

3 turns

closely fit closely fit

Shaft

3 turns

5 turns

closely fit

(4) Install carriage 2. (5) As shown on figure , attach the wires.

[Feed side]

Wire fixing 1

8.5 turns

Shaft

Fixed to CRG 1

CRG 2

View as seen from the rear

[Exit side]

Wire fixing 7

1.3.B Adjusting the Carriage Wire Tension

After having removed the wire, adjust the tension of the wire with the adjustment screw so that the exit side leaf spring will be deflected as shown in the drawing below. Also, always adjust the positions of the carriage 1 and 2 after finishing the tension adjustment.

Carriage drive wire

(12.8)

(Before) (After)

(Deflect it by 2 mm)

(14.8)

Hook

Adjustment screw

Wire tension bracket

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