Toshiba Bsx4t Manual

10. MAJOR UNIT REPLACEMENT EO18-33012A 
10.4 STEPPING MOTOR 
 
10- 8  5) Remove the four SMW-4x8 screws to detach the stepping motor from the motor bracket. 
 
 
 
 
 
 
 
 
 
 
6) Replace the stepping motor with a new one, then reassemble in the reverse order of removal.   
At this time, take care of the following points. 
· Place the stepping motor so that the harness faces the Main PC board. 
· When reassembling the stepping motor, place the two timing belts around the pulley so that the 
partition is...

10. MAJOR UNIT REPLACEMENT EO18-33012A 
10.5 RIBBON MOTORS (TAKE-UP, FEED) 
 
10-9 10.5 RIBBON MOTORS (TAKE-UP, FEED) 
 10.5.1 Ribbon Motor (Take-up) 
1) Remove the side panel (L). (Refer to Section 3.2.) 
2) Remove the ribbon motor (take-up) harness from CN13 on the Main PC board and the cable 
clamp. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
3) Remove the two SMW-3x6 screws to detach the ribbon motor (take-up). 
 
 CN13 Main PC Board Cable Clamp 
Ribbon Motor (Take-up) Harness  SMW-3x6 Screw 
Ribbon Motor...

10. MAJOR UNIT REPLACEMENT EO18-33012A 
10.5 RIBBON MOTORS (TAKE-UP, FEED) 
 
10-10 4) Replace the ribbon motor (take-up) with a new one, then reassemble in the reverse order of 
removal.  At this time, take care of the following points. 
· Tighten the two SMW-3x6 screws with 58.8 to 88.2N cm torque. 
 
 
 
 
 
 
 
 
 
 
 
 
· Fit the positioning tabs of the ribbon motor (take-up) into the positioning holes of the ribbon 
motor block. 
· Apply FLOIL G-488 to the pulley using a soft cloth. 
· Place the...

10. MAJOR UNIT REPLACEMENT EO18-33012A 
10.5 RIBBON MOTORS (TAKE-UP, FEED) 
 
10-11  10.5.2 Ribbon Motor (Feed) 
1) Remove the side panel (L). (Refer to Section 3.2.) 
2) Remove the ribbon motor (feed) harness from CN12 on the Main PC board and the cable 
clamp. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
3) Remove the two SMW-3x6 screws to detach the ribbon motor (feed). 
 
 
 CN12 Main PC Board Cable Clamp 
Ribbon Motor (Feed) Harness  SMW-3x6 Screw 
Ribbon Motor (Feed)    

10. MAJOR UNIT REPLACEMENT EO18-33012A 
10.5 RIBBON MOTORS (TAKE-UP, FEED) 
 
10-12 4) Replace the ribbon motor (feed) with a new one, then reassemble in the reverse order of 
removal.  At this time, take care of the following points. 
· Tighten the two SMW-3x6 screws with 58.8 to 88.2N cm torque. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
· Fit the positioning tabs of the ribbon motor (feed) into the positioning holes of the ribbon 
motor block. 
· Apply FLOIL G-488 to the pulley using a soft cloth. 
· Place the...

10. MAJOR UNIT REPLACEMENT EO18-33012A 
10.6 RIBBON MOTOR SENSORS (TAKE-UP, FEED) 
 
10-13 10.6 RIBBON MOTOR SENSORS (TAKE-UP, FEED) 
 10.6.1 Ribbon Motor Sensor (Take-up) 
1) Remove the side panel (L). (Refer to Section 3.2.) 
2) Disconnect the sensor harness from the ribbon motor sensor ass’y (take-up). 
 NOTE: The other end of the sensor harness is connected to CN51 on the Main PC board. 
3) Remove the SMW-3x6 screw to detach the ribbon motor sensor ass’y (take-up)....

10. MAJOR UNIT REPLACEMENT EO18-33012A 
10.6 RIBBON MOTOR SENSORS (TAKE-UP, FEED) 
 
10-14 5) Replace the ribbon motor sensor (take-up) with a new one, then reassemble in the reverse 
order of removal.  At this time, take care of the following points. 
· Attach the ribbon motor sensor (take-up) to the ribbon sensor plate (take-up) in the correct 
direction. 
· Fit the positioning tabs of the ribbon sensor plate (take-up) into the positioning holes of the 
ribbon motor block....

10. MAJOR UNIT REPLACEMENT EO18-33012A 
10.6 RIBBON MOTOR SENSORS (TAKE-UP, FEED) 
 
10-15  10.6.2 Ribbon Motor Sensor (Feed) 
1) Remove the side panel (L). (Refer to Section 3.2.) 
2) Disconnect the sensor harness from the ribbon motor sensor ass’y (feed). 
 NOTE: The other end of the sensor harness is connected to CN51 on the Main PC board. 
3) Remove the SMW-3x6 screw to detach the ribbon motor sensor ass’y (feed). 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
4) Detach the ribbon motor sensor (feed) from the...

10. MAJOR UNIT REPLACEMENT EO18-33012A 
10.6 RIBBON MOTOR SENSORS (TAKE-UP, FEED) 
 
10-16 5) Replace the ribbon motor sensor (feed) with a new one, then reassemble in the reverse order 
of removal.  At this time, take care of the following points. 
· Attach the ribbon motor sensor (feed) to the ribbon sensor plate (feed) in the correct 
direction. 
· Fit the positioning tabs of the ribbon sensor plate (feed) into the positioning holes of the 
ribbon motor block. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
· Make...

10. MAJOR UNIT REPLACEMENT EO18-33012A 
10.7 PRINT HEAD 
 
10-17 10.7 PRINT HEAD 
 
 
 
 
 
CAUTION! 
1. Never touch the element when handling the print head. 
2. Never touch the connector pins to avoid a breakdown of the print head by static electricity. 
3. Never remove the screws which secure the print head to the bracket.  Doing so may cause 
improper print quality. 
 
 
 
 
 
 
 
 
 
 
4. Never disassemble the head block frame.  Doing so may cause a print failure, such as 
ribbon wrinkle, blurred...