Toshiba B-570 Range : 1V / 0.2 m sec.

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

Contents

Main TABLE OF CONTENTS CAUTION: 1.2 CHECKS NOTE: Keep the carton and side pads for later transport. 1. UNPACKING 1.1 PROCEDURE 2. MAJOR UNIT REPLACEMENT 2.1 REPLACING THE PS UNIT, I/F PC BOARD AND CPU PC BOARD Replace only with same type and ratings of fuse for continued protection against risk of fire. Range : 1V / 0.2 m sec. 2.2 REPLACING THE STEPPING MOTOR 2.4 REPLACING THE TAKE-UP MOTOR NOTE: The following procedure can be employed without removing the top cover and left side cover. 2.3 REPLACING THE RIBBON MOTORS NEVER separate the take-up motor from the bracket because doing so will change the adjustment. 2.5 REPLACING THE SOLENOID NOTE: The following procedure can be employed without removing the top cover and left side cover. Page 2.6 REPLACING THE PRINT HEAD 2.6.1 Old type print head NOTE: Use caution to prevent damage to the element during adjustment of the print head. 2.6.2 New type print head NOTE:NEVER loosen screws other than two SM-4x8B. 2.7 REPLACING THE PLATEN AND FEED ROLLER Page 2.9 REPLACING THE RIBBON BACK TENSION BLOCK 2.8 REPLACING THE PAPER SENSOR NOTE: Turn the knob until the paper sensor reaches full forward. 2.10 REPLACING THE PINCH ROLLER SHAFT ASSY Page 2.11CORRECTING SKEW PRINTING 3. INSTALLATION PROCEDURE FOR THE OPTIONAL EQUIPMENT WARNING! 3.1 HIGH SPEED PC INTERFACE BOARD (B-4800-PC-QM) Page 3.2 CUTTER MODULE (B-4205-QM) Page Page 3.3 MEMORY MODULE 3.4 FANFOLD PAPER GUIDE MODULE (B-4905-FF-QM) 4. MECHANISM DESCRIPTION 4.1 CUTTER DRIVE (CUTTER MODE) 4.2 HARNESS WIRING Fig. 4-3 5. TROUBLESHOOTING Page CAUTION: TABLE OF CONTENTS 6. DIAG. TEST OPERATION 6.1 OUTLINE OF THE DIAG. TEST OPERATION Page 6.2 SELF TEST MODE [ ] 31 The data from 1 to 6.2.1 Maintenance Counter Printing Fig. 6-1 1) Maintenance Counter 2) Parameters 6.2.2 Automatic Diagnostic Printing The data from 1 to 9 on a sample print is printed. Fig. 6-2 2KANJI ROM Check 1PROGRAM/MASK ROM Check 5Flash Memory Card Check 3EEPROM Check 4DRAM Check 6Sensor 1 Check Page Connector: FCN-781P024-G/P Fig. 6-3 8DIP SW Check NOTE: The DIP switch 1-7 is to be set to 0 (OFF:OPEN) regardless of setting item. 9EXP. I/O Check 6.2.3 Head Broken Element Check [ ] 6-13 EM18-33010A 6. DIAG. TEST OPERATION 6.3 PARAMETER SETTING MODE (Revision Date: Dec. 10 99) 6.3 PARAMETER SETTING MODE Page 6.3.1 Feed Length Fine Adjustment 6.3.2 Cut/Strip Position Fine Adjustment 6.3.3 Back Feed Length Fine Adjustment Page Page Fig. 6-14 Strip Position Fine Adjustment Example Page 2. Max. fine adjustment 6.3.4 X Axis Fine Adjustment Page NOTES: 1 Holding the [FEED] key or [RESTART] key down for more than 0.5 seconds enables (Thermal transfer printing fine adjustment) (Thermal direct printing fine adjustment) 6.3.5 Print Tone Fine Adjustment 2. A changed font code is stored in memory by pressing the [PAUSE] key. 6.3.6 Character Code Selection 2. A changed zero font is stored in memory by pressing the [PAUSE] key. 6.3.7 Font Zero Selection 6.3.8 Control Code Selection NOTES: Refer to the following for the selection of the control codes 1 to 3. 6.3.9 Ribbon Type Selection 6.3.10 Ribbon Motor Drive Voltage Fine Adjustment (Ribbon feed motor voltage fine adjustment) (Ribbon rewind motor voltage fine adjustment) 6.3.11 Strip Wait Status Setting 6.3.12 Stacker Selection NOTE: 1. Holding the [FEED] key or [RESTART] key down for more than 0.5 seconds enables 2. A changed Stacker selection is stored in memory by pressing the [PAUSE] key. 6.3.13 Threshold Manual Fine Adjustment for the Black Mark Sensor Pressing the [RESTART] key onetime is a +0.1V change, up to 4.0V. 6.3.14 Threshold Manual Fine Adjustment for the Feed Gap Sensor How To Calculate Theshold Fine Adjustment Value B A D C 6.3.15 Kanji Code Selection 2. A changed Kanji code is stored in memory by pressing the [PAUSE] key. 6.3.16 Euro Font Code Selection 2. A changed Euro font code is stored in memory by pressing the [PAUSE] key. 6.3.17 Transmission Control Mode Selection 6.3.18 Reset Selection when the INPUT PRIME Signal is ON. 6.4 TEST PRINT MODE 6.4.1 Normal Test Print Page Page Page Page 6.4.2 Process Test Print Page 6.5 SENSOR SETTING MODE 6.5.1 Thermistor Check 6.5.2 Black Mark Sensor Adjustment 6.5.3 Feed Gap Sensor Adjustment 6.5.4 Paper End Setting for Black Mark Sensor 6.5.5 Paper End Setting for Feed Gap Sensor 6.6 RAM CLEAR MODE Page NOTE: Confirm that COMPLETE is displayed, then turn the power off. 6.6.1 Maintenance Counter Clear NOTE: Confirm that COMPLETE is displayed, then turn the power off. 6.6.2 Parameter Clear 7. PROGRAM DOWN LOAD 7.1 FLOPPY DISK 7.2 SETUP 7.3 DOWN LOAD PROCEDURE ) 7.4 ERROR CODE