TEC B-570 SERIES User manual

TEC Thermal Printer
B-570 SERIES
Original Nov., 1993
(Revision Apr., 1994)
PRINTED IN JAPAN
Maintenance Manual
Document No. EM18-33010A

NOTES: 1. Manual instructions must be followed when installing option kits or adding cables
to avoid system failures and to insure proper performance and operation.
2. Failure to follow manual instructions or any unauthorized modification,
substitution or change to this product will void the limited product warranty.
WARNING!
Follow all manual instructions. Failure to do so could create safety hazards such as fire or
electrocution.

EM18-33010A
TABLE OF CONTENTS
1. UNPACKING ...................................................................................................... 1- 1
1.1 Procedures.................................................................................................. 1- 1
1.2 Checks ........................................................................................................ 1- 1
2. MAJOR UNIT REPLACEMENT.......................................................................... 2- 1
2.1 REPLACING THE PS UNIT, I/F PC BOARD AND CPU PC BOARD ......... 2- 2
2.2 REPLACING THE STEPPING MOTOR...................................................... 2- 4
2.3 REPLACING THE RIBBON MOTORS........................................................ 2- 5
2.4 REPLACING THE TAKE-UP MOTOR ........................................................ 2- 5
2.5 REPLACING THE SOLENOID.................................................................... 2- 7
2.6 REPLACING THE PRINT HEAD ................................................................ 2- 8
2.7 REPLACING THE PLATEN AND FEED ROLLER..................................... 2-11
2.8 REPLACING THE PAPER SENSOR......................................................... 2-13
2.9 REPLACING THE RIBBON BACK TENSION BLOCK .............................. 2-13
2.10REPLACING THE PINCH ROLLER SHAFT ASS’Y .................................. 2-14
2.11CORRECTING SKEW PRINTING ............................................................. 2-16
3. INSTALLATION PROCEDURE FOR THE OPTIONAL EQUIPMENT................ 3- 1
3.1 HIGH SPEED PC INTERFACE BOARD (B-4800-PC-QM)......................... 3- 1
3.2 CUTTER MODULE (B-4205-QM) ............................................................... 3- 3
3.3 MEMORY MODULE.................................................................................... 3- 5
3.4 FANFOLD PAPER GUIDE MODULE (B-4905-FF-QM).............................. 3- 7
4. MECHANISM DESCRIPTIONS.......................................................................... 4- 1
4.1 CUTTER DRIVE (CUT MODE) ................................................................... 4- 1
4.2 HARNESS WIRING .................................................................................... 4- 2
5. TROUBLESHOOTING........................................................................................ 5- 1
6. DIAG. TEST OPERATION.................................................................................. 6- 1
7. PROGRAM DOWN LOAD .................................................................................. 7- 1
7.1 FLOPPY DISK............................................................................................. 7- 1
7.2 SETUP ........................................................................................................ 7- 1
7.3 DOWN LOAD PROCEDURE ...................................................................... 7- 2
7.4 ERROR CODE............................................................................................ 7- 3
(Revision Date Feb. 01 ’96)
Page
CAUTION:
1. This manual may not be copied in whole or in part without prior written permission of
TOSHIBA TEC.
2. The contents of this manual may be changed without notification.
3. Please refer to your local Authorized Service representative with regard to any queries you
may have in this manual.
Copyright © 1999
by TOSHIBA TEC CORPORATION
All Rights Reserved
570 Ohito, Ohito-cho, Tagata-gun, Shizuoka-ken, JAPAN

1-1
EM18-33010A
1. UNPACKING
1.2 CHECKS
1) Check for any damage or scratches on the machine.
2) Confirm that none of the accessories are missing.
NOTE: Keep the carton and side pads for later transport.
Carton
Thermal Printer
Side Pad (L)
Power Cord
Owner’s Manual
Side Pad (R)
Fig. 1-1
1. UNPACKING
1.1 PROCEDURE
1) Open the carton.
2) Unpack the accessories from the carton.
3) Unpack the side pad (L)/(R) and the printer from the carton.
4) Place the printer on a level surface.
(Revision Date Sep. 14 ’95)
1.1 Procedure
Supply
Holder
Head Cleaner
Unpacking
Procedure
Rewinder
Guide Plate
Rear Pad

2-1
EM18-33010A
2. MAJOR UNIT REPLACEMENT
CAUTION: 1) Lubrication:During parts replacement
2) Kinds of oil:FLOIL G-488: 1 Kg can. (Part No. 19454906001).
NOTE: Instructions to remove the top cover and left side cover are omitted from each removal/
installation procedure provided below.
■Lubrication
WARNING!
Disconnect power cord before replacing important parts.
Anymachineisgenerallyinitsbestconditionwhendelivered;therefore,itisnecessarytotrytokeep
thiscondition. Unexpectedfailureoccursduetolackofoil,debrisordust. Tokeepitsbestcondition,
periodically clean the machine and apply proper kinds of oil to each part in which lubrication is
needed.
Although the frequency of lubrication varies according to how much the machine is used, at least it
isnecessarytolubricatebeforethemachinebecomesdry. Itisalsonecessarytowipeoffexcessive
oil as it collects dirt.
(Revision Date Dec. 09, ’94)
2. MAJOR UNIT REPLACEMENT
Fig. 2-1
2. MAJOR UNIT REPLACEMENT
CAUTION:
1. NEVER separate the ribbon motors from the attaching plate (bracket), because doing so will
change their adjustment. (See Fig. 2-8)
2. NEVER remove the two screws painted red on the side of the print block. (See Fig. 2-13)
3. NEVER remove the four screws on the side of the print block. (See Fig. 2-13)
4. NEVER remove the four screws painted red fixing the right plate and reinforcing plate.
(SeeFig. 2-16)However,themachinewithaserialnumberof4Txxxxxxorlaterisnotequipped
with the red screws because of the change in the right plate shape.
5. NEVER remove unmentioned screws because doing so will change their adjustment.
1) Turn the power off.
2) Open the top cover to remove the four FL-3x5 screws. Slide the top cover to the left to release the
damper and remove the top cover.
3) Remove the seven screws (FL-4x5 and B-4x5) to remove the left side cover.
4) Disconnect the FAN motor connector from the PS unit.
CAUTION: Do not spray the inside of the printer with lubricants. Unsuitable oil can damage
the mechanism.
Top Cover
Screw (FL-4x5)
Screw (B-4x5)
FAN Motor
Left Side Cover
Screw (FL-3x5)
Damper

2-2
EM18-33010A
2. MAJOR UNIT REPLACEMENT
3) Disconnect the 13 connectors from the CPU PC board.
4) Remove the six screws (SM-3x6B, SM-3x6C) to detach the CPU PC board from the printer.
(Revision Date Oct. 14, ’94)
2.1 REPLACING THE PS UNIT, I/F PC BOARD AND CPU PC BOARD
2.1 REPLACING THE PS UNIT, I/F PC BOARD AND CPU PC BOARD
CAUTION:
Replace only with same type and ratings of fuse for continued protection against risk of fire.
1) Remove the three FL-4x6 screws and disconnect the two connectors to detach the PS unit.
2) Remove the FL-3x5 screw and the four locking supports to remove the I/F PC board.
Fig. 2-2
5) Replace the PS unit, I/F PC board and CPU PC board. Insert the connectors correctly and install
in the reverse order of removal above. Do not mount the left side cover and top cover.
Fig. 2-3
PS Unit
Screw (FL-4x6)
Screw (FL-3x5)
I/F PC Board
Screw (FL-4x6)
Connector
Locking Support
Screw (SM-3x6B)
Screw (SM-3x6B)
CPU PC Board
Connector
Connector
Connector
Screw (SM-3x6B)
Connector
Connector
I/F Connector
Screw (SM-3x6C)
Screw (SM-3x6B) Connector

2-3
EM18-33010A
2. MAJOR UNIT REPLACEMENT
CAUTION:
Be careful when replacing the CPU PC board, since a non-resettable counter (IC12) is installed on
this board. (Refer to Section 6.2.1 Maintenance Counter Printing.)
If this counter should be reset, replace IC12.
Fig. 2-4
Fig. 2-5
2.1 REPLACING THE PS UNIT, I/F PC BOARD AND CPU PC BOARD
6) Adjust the ribbon end sensor.
Use the following Ribbons; TTM-78 (Maker: Fujicopian)
1 Set the ribbon so that the ribbon end sensor
can detect the ribbon. Turn the power on.
2 Turn the VR2 so that the voltage between Pin
1 (GND) and Pin 7 of CN10 is 3.0 ±0.2 V with
an oscilloscope.
3 Turn the power off and mount the left side
cover and top cover.
7) Adjust the black mark sensor.
As the black mark sensor is adjusted by key entries in system mode, refer to page 6-39 for the
adjustment procedure.
8) Adjust the feed gap sensor.
As the feed gap sensor is adjusted by key entries in system mode, refer to page 6-40 for the
adjustment procedure.
CN7
CN8 RA9 CN9
RA10
RA11
VR1 VR2
IC30
IC16
110
CN10
Range : 1V / 0.2 m sec.
Voltage
3.0 0.2V
VR2
GND

2-4
EM18-33010A
2. MAJOR UNIT REPLACEMENT
4) When replacing the stepping motor, place the platen belt first then the feed roller belt around the
pinion gear so that the partition is positioned between two belts. Hold down the stepping motor at
3.5 kg ±300 g force and secure it so that the belts have no slack or disengagament.
5) Reassemble in the reverse order of removal.
Fig. 2-6
2.2 REPLACING THE STEPPING MOTOR
2.2 REPLACING THE STEPPING MOTOR
1) Removethetwoblackscrewstodetachthefrontplate,removethetwoFL-4x6screwstodetachthe
belt cover.
2) Unclamp and disconnect the connector from CN14 on the CPU PC board.
3) Remove the two SM-4x8B screws, loosen the two belts from the pinion gear, and remove the
stepping motor.
Fig. 2-7
Black Screw
Front Plate
Belt Cover
Screw (FL-4x6)
CPU PC Board
CN14
PS Unit
Stepping Motor
Clamp
Partition
Pinion Gear
Feed Roller Belt
Screw (SM-4x8B)
Platen Belt

2-5
EM18-33010A
2. MAJOR UNIT REPLACEMENT
2) Replace the ribbon motors, then align the dowels to attach the ribbon motors. Reassemble in the
reverse order of removal.
2.4 REPLACING THE TAKE-UP MOTOR
NOTE: The following procedure can be employed without removing the top cover and left side cover.
1) Remove the four FL-3x5 screws to detach the motor cover.
2) Remove the connector for the rewind full sensor (LED).
3) Disconnect the connector from the CN1 on the PWM PC board and remove the two FL-3x5 screws
to detach the take-up motor.
Fig. 2-9
Fig. 2-8
2.3 REPLACING THE RIBBON MORTORS
2.3 REPLACING THE RIBBON MOTORS
CAUTION:
NEVER separate the ribbon motors from the attaching plate because doing so will change their
adjustment.
1) Disconnect the connector and remove the two SM-3x5B screws to detach the ribbon motors.
CAUTION:
NEVER separate the take-up motor from the bracket because doing so will change the adjustment.
4) Replace the take-up motor, then align the dowels to attach the motor cover and rewind full sensor
(Tr).
Dowels
FLOIL G-488
Attaching Plate
Ribbon Motor
Screw (SM-3x5B)
Connector (Black)
Connector (Red)
Screw (SM-3x5B)
Ribbon Motor
Attaching Plate FLOIL G-488
Connector (CN1)
Screw (FL-3x5)
Motor Cover
Screw (FL-3x5)
Connector
Take-up Motor
Bracket
PWM PC Board
FLOIL

2-6
EM18-33010A
2. MAJOR UNIT REPLACEMENT
Fig. 2-10
2.5 REPLACING THE SOLENOID
2.5 REPLACING THE SOLENOID
NOTE: The following procedure can be employed without removing the top cover and left side cover.
1) Before removing the ribbon stopper, check its attaching direction for later installation. Remove the
ribbon stopper from the ribbon shaft on which the ribbon is wound.
2) Remove the two SM-4x8B screws, disconnect the connector CN1 on the RSV PC board to detach
the solenoid unit.
3) RemovethetwoSM-3x5BscrewsanddisconnecttheCN2connectorontheRSVPCboardtodetach
the solenoid.
Fig. 2-11
Ribbon Shaft
Ribbon Stopper
Print Block
RSV PC Board
CN2 (2 pin)
Connector CN1 (3 pin)
Solenoid Attaching Plate
Screw (SM-4x8B)
Solenoid
Connector CN2 (2 pin)
RSV PC Board
Screw (SM-3x5B)
Solenoid Attaching Plate