Toshiba 1550 User manual

SERVICE MANUAL
PLAIN PAPER COPIER
PAPER FEEDING UNIT
1550,1560
MY-1004
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Copyright TOSHIBA CORPORATION 1998
ALL RIGHTS RESERVED

GENERAL PRECAUTIONS REGARDING THE INSTALLATION
AND THE SERVICE OF THE 1550/1560/MY-1004
1. Transportation/Installation
• When transporting/installing the copier, using two persons, be sure to use the positions as indi-
cated below.
The copier is fairly heavy and weighs approximately 35 kg (76.8 lb), therefore pay full attention
when handling it.
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 minimum 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 trans-
former.
• 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 portions

4. Main Service Parts for Safety
• Thethermofuse,thermistor,fuse,breakeranddoorswitch,etc.areparticularlyimportantforsafety.
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.

Mar. 1998 © TOSHIBA 1 - 1 1550/1560 SPECIFICATIONS
1. SPECIFICATIONS, ACCESSORIES AND OPTIONS
1.1 Specifications
1.1.1 1550
Copy process ........................... Indirect electrophotographic process (dry)
Type ......................................... Desk top
Exposure type .......................... Slit exposure with fixed table
Original size ............................. Type: Sheets, books and three-dimensional objects
Maximum size: A3 or Ledger
Copy paper
Size Thickness
Cassette A3~A5-R 64~80g/m2
Ledger~Statement-R 16lb.~22lb.
Manual A3~A5-R 64~130g/m2Sheet bypass
Ledger~Statement-R 16lb.~34lb. feeding only
678
Special paper: Label paper (type recommended by Toshiba) and OHP film (80 µm or more in thickness,
type recommended by Toshiba)
– bypass feeding only
Copy speed (sheets/minute)
Actual size Reduction/Enlargement
Paper size Cassette Manual (Cassette/Manual)
A4, B5, A5-R 15 1 8
LT, ST-R
A4-R, B5-R 12 1 8
LT-R
B4, FOLIO 10 1 8
LG, COMPUTER
A3 8 1 8
LD
First copy time...........About 5.8 seconds (100%, A4/LT copier cassette feeding)
About 8.3 seconds (100%, A3/LG/LD PFU cassette feeding)
Warm-up time............About 28 seconds (100V series), About 28 seconds (200 V series)

1550/1560 SPECIFICATIONS 1 - 2 Mar. 1998 © TOSHIBA
Multiple copying ........Up to 999 sheets
Setting to adjustment mode allows selection of 9, 99, 500 and 999 copies.
Reproduction ratio.....Actual size 1:1
By setting to adjustment mode, vertical reproduction only can be altered to
1:1.01.
Reduction/Enlargement 3R3E
50, 65, 78, 129, 154, 200% (For U.S.A, Canada)
50, 71, 82, 122, 141, 200% (For Europe)
Paper feeding
Type Capacity
Cassette Front Loading 500 sheets (50 mm or less)
Manual * Foldable tray 1 sheet * For Europe
Manual start: At the time of shipping, the copying operation is started by
the PRINT key. By inputting data for adjustment mode, it
can be changed to auto-start.
Toner supply..............Automatic density detection and replenishment
Toner cartridge replacement method
Exposure ................... Automatic control and manual control
Weight .......................35 kg
Power source ............110 V – 50/60 Hz
115V – 60 Hz
127 V – 60 Hz
220 V – 50/60 Hz
220~240 V – 50/60 Hz
Power consumption...1.5 kW or less
Total counter..............Mechanical total counter (6 digits)
Machine size .............See the next page.
1.1.2 1560
The differences from the 1550 are shown below.
Bypass
Copying speed ..........8 copies/minute ( all sizes)
Size ...........................A3~A5-R
LD~ST-R
Paper stacking capacity
...................................... 60 copies

Mar. 1998 © TOSHIBA 1 - 3 1550/1560 SPECIFICATIONS
Copy paper size ........64~80g/m2: 60 copies stacking
16~22lbs : 60 copies stacking
80~130g/m2: single-sheet feeding
22~34lbs : single-sheet feeding
Weight of machine.....38kg
Size of a machine......W571 x D541 x H340mm
541 mm
548 mm
340 mm

1550/1560 SPECIFICATIONS 1 - 4 Mar. 1998 © TOSHIBA
1.2 Accessories
Copy receiving tray .................. 1 pc
Operator’s manual.................... 1 pc
Drum ........................................ 1 pc
Lever caps................................ 2 pcs
Setup report ............................. 1 pc
1.3 Options and Supplies
Options
Automatic document feeder MR-2004LT 660 84890
MR-2004A4 660 84891
Sorter MG-1003 660 84838
Key copy counter (6 digit) MU-8 660 02050
Key copy counter kit MU-10 660 02051
Counter bracket kit KN-1550K 660 84840
Cassette KC-1550AF 660 84841
KC-1550LF 660 84842
KC-1550AFE 660 84914
Damp heater kit MF-1550U 660 84848
MF-1550E 660 84849
Paper feed unit MY-1004L 660 84835
MY-1004AE 660 84913
MY-1004A 660 84836
Sorter bracket kit KN-1550S 660 84839
(for MG-1003)
Supplies
Drum PS-OD1550 66084854
Developer material PS-ZD1550 66084853
Toner PS-ZT1550 66084851
Toner (for Europe) PS-ZT1550E 66084852
Toner bag PS-TB1550 66084859
Toner bag (for Europe) PS-TB1550E 66084860
For Europe
For Europe

Mar. 1998 ©TOSHIBA 2 - 1 1550/1560 GENERAL
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2. OUTLINE OF THE MACHINE
2.1 Sectional Views and Electrical Parts Location Diagram
2.1.1 Front and rear sectional views for the 1550
1 Carriage 1
2 Mirror 1
3 Reflector
4 Exposure lamp
5 Exposure adjustment plates
6 Carriage 2
7 Mirror 2
8 Mirror 3
9 Mirror unit
10 Mirror 4
11 Mirror 5
12 Mirror 6
13 Slit glass
14 Auto exposure PC board
15 Lens
16 Original cover
17 Original glass
18 Main charger
19 Discharge lamp
20 Ozone filter
21 LED erasing array
22 Main blade
23 Recovery blade
24 Toner recovery auger
25 Transfer charger
26 Separation charger
27 Drum
28 Pre-transfer bias guide
29 Transport guide
30 Magnetic roller
31 Leveler (doctor)
32 Auto toner sensor
33 Mixer
34 Bypass feed guide
35 Bypass feed tray
39 Aligning roller (upper)
40 Aligning roller (lower)
41 Aligning switch
42 Transport roller (left) (MY-1004)
43 Transport roller (right) (MY-1004)
44 Paper stop switch (MY-1004)
45 Separation roller
46 Feed roller
47 Pick-up roller
48 Heat roller
49 Heat roller (lower)
50 Cleaning felt roller
51 Thermistor
52 Thermostat
53 Heater lamp
54 Separation claws
55 Exit switch
56 Exit roller (upper)
57 Exit roller (lower)
58 Discharge brush
59 Fuser guard
65 Air filter
69 Cleaning blade
82 Paper empty switch
83 Empty switch (MY-1004)

1550/1560 GENERAL 2 - 2 Mar. 1998 ©TOSHIBA
60 Scanning motor
61 Carriage drive wire
62 Lens motor
63 Mirror motor
64 Developer-unit drive gear
66 Drum gear
67 Main motor
68 Heat roller gear
70 Exit roller gear
72 Aligning roller clutch
73 Transport roller clutch (MY-1004)
75 Cassette
76 Feed roller clutch
77 Pick-up roller clutch
78 (PFU) cassette (MY-1004)
79 (PFU) feed roller clutch (MY-1004)
80 (PFU) pick-up roller clutch (MY-1004)
81 (PFU) drive motor (MY-1004)
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Mar. 1998 © TOSHIBA 2 - 3 1550/1560 GENERAL
2.1.2 Front and Rear sectional views for the 1560
(The differences from the 1550)
Bypass paper guide
Bypass paper-feed roller
Bypass pick-up roller
Bypass separation pad

1550/1560 GENERAL 2 - 4 Mar. 1998 © TOSHIBA

Mar. 1998 ©TOSHIBA 2 - 5 1550/1560 GENERAL
2.1.3 Electrical parts location diagram
[A] DC electrical parts excluding motors
Symbol Name
1 Control panel PC board (PWA-F-PNL)
2 Total counter (T-CTR)
3 Feed roller clutch (FED-CLT)
4 Pick-up roller clutch (PKUP-CLT)
5 Aligning roller clutch (CLT-REG)
6 High-voltage transformer (PS-HVT)
7 Heat roller thermistor (THMS-HTR)
8 Exit switch (EXT-SW)
9 Logic PC board (PWA-F-LGC)
10 Power supply unit (PS-ACC)
11 Size switch (SIZE1-SW)
12 Paper empty switch (EMP2-SW)
13 Aligning switch (RGT-SW)
14 Toner-full switch (T-FUL-SW)
15 Auto-toner sensor (SNR-ATC)
16 Eraser lamp PC board (ASM-F-ERS)
17 LED discharge array PC board (ASM-DCH)
18 Mirror switch (MRR-SW)
19 Auto-exposure PC board (PWA-F-AES)
20 Lens switch (LNS-SW)
21 Home switch (HOME-SW)
1
2
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1550/1560 GENERAL 2 - 6 Mar. 1998 ©TOSHIBA
[B] Electrical parts such as motors
Symbol Name
1 Main motor (MAIN-MTR)
2 Scanning motor (SCN-MTR)
3 Mirror motor (MRR-MTR)
4 Lens motor (LNS-MTR)
5 Front optics fan (OPT-FAN-F)
6 Rear optics fan (OPT-FAN-R)
7 Exit fan (EXIT-FAN)
8 Toner motor (TNR-MTR)
8
7
6
5
4
3
2
1

Mar. 1998 ©TOSHIBA 2 - 7 1550/1560 GENERAL
[C] AC electrical parts
Symbol Name
1 Door switch (DOOR-SW)
2 Main switch (MAIN-SW)
3 Damp heater L (D-HTR-L)
4 Thermostat
5 AC power cable
6 Fuse PC board (PWA-F-FUS)
7 Damp heater U1 (D-HTR-U1)
8 Exposure lamp (EXPO-LAMP)
9 Thermofuse (FU-EXPO)
10 Lamp regulator PC board (PS-LRG)
11 Heater thermostat (K-THMO)
12 Heater lamp (HTR-LAMP)
13 Damp heater U2 (D-HTR-U2)
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8
9
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Mar. 1998© TOSHIBA 2 - 8 1550/1560 GENERAL
2.2Symbol and Function of Electrical Parts
(1)Motors
Symbol Code name Function Remarks *Page/item No.
M1 MAIN-MTR (Main motor) Drives the drum, developer IC motor P9, I1
and heat roller
M2 SCN-MTR (Scanning motor) Scans the optical system Pulse motor P8, I14
M3 LNS-MTR (Lens motor) Drives the lens unit Pulse motor P8, I4
M4 MRR-MTR (Mirror motor) Drives the mirror unit Pulse motor P8, I4
M6 OPT-FAN-F (Optics fan (front)) Cools the optical system IC motor P3, I8
M7 OPT-FAN-R (Optics fan (rear)) M60
M8 EXIT-FAN (Exit-fan) Cools the drum and cleaner IC motor: M60 P3, I8
M9 TNR-MTR (Toner motor) Replenishes the toner Brush motor P17, I31
(2)Electromagnetic spring clutches
Symbol Code name Function Remarks *Page/item No.
CLT1 RGT1-CLTTransmits aligning roller P7, I4
(Aligning roller clutch) drive.
CLT2 FED1-CLTTransmits feed roller drive. P7, I22
(Feed roller clutch)
CLT3 PKLP-CLTTransmits pick-up roller P7, I22
(Pick-up roller clutch) drive.
(3)Counters
Symbol Code name Function Remarks
TT-CTR (Total counter) Total counter 6-digit
KK-CTR (Key-copy counter) Individual counter 6-digit (option)
* Refer to SERVICE PARTS LISTED-1550
Go to 1550 DC Harness
Connection Diagram
Go to 1560 DC Harness
Connection Diagram

1550/1560 GENERAL 2 - 9 Mar. 1998 © TOSHIBA
(4)Switches
Symbol Code name Function Remarks *Page/item No.
S1 MAIN-SW (Main switch) Power supply Tumbler type P4, I2
S2 DOOR-SW (Door switch) For safety, cancels Push switch P4, I4
abnormal condition
S3 EMP1-SW Detects lack of paper in the Reflecting photo P6, I20
(Paper-empty switch 1) cassette sensor
S4 SIZE1-SW (Size switch) Detects cassette size Push switch P6, I26
S5 RGT-SW (Aligning switch) Detects paper in front of the Photointerruptor P7, I15
aligning roller
S6 EXIT-SW (Exit switch) Detects exiting paper Photointerruptor P20, I15
S7 HOME-SW (Home switch) Detects home position of thePhotointerruptor P12, I16
optical system
S8 LNS-SW (Lens switch) Detects home position of thePhotointerruptor P12, I16
lens unit
S9 MRR-SW (Mirror switch) Detects home position of thePhotointerruptor P8, I27
mirror unit
S10 T-FUL-SW Detects when the used tonerMicroswitch P17, I22
(Toner-full switch) bag is full
(5)Heaters and lamps
Symbol Code name Function Remarks *Page/item No.
EXP EXPO-LAMP Exposes the original Halogen lamp P10, I14
(Exposure lamp) 300W
HTR HTR-LAMP (Heater lamp) Fixing Halogen lamp P19, I6
900W
ERS ERS-LAMP Discharges the drum LED type P15, I14
(Discharge lamp)
DCH DCH-LED To interrupt the charge LED P15, I15
(LED eraser array)
DHU D-HTR-U (Damp heater U) Keeps optical system warm PTC P12, I33
(option)
DHL D-HTR-L (Damp heater L) Keeps the drum and transfer/PTCP6, I36
separationcharger case
warm (option)
Go to 1550 DC Harness
Connection Diagram
Go to 1560 DC Harness
Connection Diagram

Mar. 1998 © TOSHIBA 2 - 10 1550/1560 GENERAL
(6)PC boards
(7)Transformers
Symbol Code name Function Remarks *Page/item No.
HVT PS-HVT Generates high voltage P5, I18
(Charging transformer) electricity for charging
(negative voltage)
(Transfer/separation transformer) Generates high voltage
electricity for transfer/
separation and developing
bias voltage
Symbol Code name Function Remarks *Page/item No.
LGC PWA-F-LGC (Logic PC board) Controls the entire copier P5, I14
ACC PS-ACC Supplies electrical power to P5, I19
(Power supply PC board) ICs, solenoids and motors
PNL PWA-F-PNL Controls condition displays P2, I22
(Control panel PC board) and operation keys
LRG PS-LRG Controls exposure lamp P4, I35
(Lamp regulator PC board)
DCH ASM-DCH Turns on and drives LED P15, I15
(LED eraser array PC board) during reduction
ERS ASM-ERS Discharge lamp P15, I14
(Discharge lamp PC board)
AES PWA-F-AES Reads dark/light of the original P8, I28
FUS PWA-F-FUS (Fuse PC board) Fuse for the damp heater Option P5, I23
circuit.
(8)Others
Symbol Code name Function Remarks *Page/item No.
ATS SNR-ATC Reads toner density with a P18, I26
(Auto-toner sensor) magnetic sensor
THMS THMS-HTR Detects temperature of the P20, I9
(Heat-roller thermistor) heat roller
THERMOK-THERMO Prevents abnormal heating P20, I8
(Thermostat) of heat roller
FU FU-EXPO (Thermofuse) Prevents abnormal heating P10, I5
of the exposure lamp
TMS-DRM TMS-DRM (Drum thermistor) Detects the drum tempera- P3, I39
ture roughly
Go to 1550 DC Harness
Connection Diagram
Go to 1560 DC Harness
Connection Diagram

1550/1560 GENERAL 2 - 11 Mar. 1998 © TOSHIBA
2.3 Wire-Harness Location Diagram
A. Location Diagram for Upper Unit
T
J16 J17
PWA-F-PNL
M6
OPT -FAN-F
EXIT-FAN
OPT -FAN-R
S8
S7
EXPO-LAMP
S9
DUMP HTR-U1
MRR-MTR
M9
J
T-FUL-SW
S10
TNR-MTR
LNS-MTR
PS-LRG
J502
J501
ASM-FUS PS-ACC
LGC
SCN-MTR
J9
J5J4
PWA-F-LGC
J53 M8
M7
J57
LNS-SW
PWA-F AES
K- CTR
M4
ASM-ERS ASM-DCH SNSR-A/T
MRR -SW
M2
M3
J83
J11
T-CTR
FU-EXPO
J60
J64
J51
J52 J86 J81 J77
J82
J73 J73
J74
J75J76
J77
J21
J79
J508
J25 J80
J61
J18
HOME-SW
J58
J59
DRM-THMS
J90
J78
AC
DC
DUMP HTR-U2

Mar. 1998 © TOSHIBA 2 - 12 1550/1560 GENERAL
B. Location Diagram for Lower Unit
S6
PS-HVT
S4
J506
PWA-F FUS
J31
MAIN-SW
TO UPPER UNIT
TO UPPER UNIT AC INPUT POWER SUPPLY
S1
DOOR-SW
S2
S5
S3
PS-ACC
PWA-F-LGC
J521
K-THERMO
HTR-LAMP
SEPARATION-CHARGER
TRANSFER-CHARGER
J84
J526
J527
J528 J529
CLT1 CLT3 CLT2
J511
J10
J8
J63 J85 J64
THMS-HTR
J7
J3
J522
A3 A1 A2
EXIT-SW
J62
RGT-SW
J69
SIZE-SW
J65
EMP-SW
J72
J66 J67
J71
J68
J70
D-HTR-L
PRE-TRANSFER-GUIDE
B2
J531
J532
B1 B3
M1
AC
DC

1550/1560 GENERAL 2 - 13 Mar. 1998 © TOSHIBA
2.4 Removing Covers and Electrical
Parts
2.4.1 Removing covers
[A] Front cover
(1) Remove the cassette (in the direction of the
arrow).
(2) Removethe screwsfasteningthehinge (4pcs.).
[B] Inner cover (upper)
(1) Open the front cover.
(2) Remove the toner cartridge.
(3) Remove three screws.
Front cover
Cassette
Hinge
Inner cover (upper)