Toshiba e-STUDIO556 Service Manual page 648

[C270] Carriage home position sensor not going OFF within a specified time
e-STUDIO556/656/756/856
Proced
Check item
ure
1 Is the carriage moved?
2 Carriage home position
sensor
SLG board
Scan motor
3 Carriage locking
Carriage home position
sensor
SLG board
Scan motor
4 Exposure lamp
Replace parts
Carriage home position sensor
Carriage home position sensor harness
SLG board
Scan motor
e-STUDIO556/656/756/856/557/657/757/857
ERROR CODE AND TROUBLESHOOTING
Result
Yes It is moved.
No It is not moved.
1. Check if the harness of the carriage home position sensor is
connected properly.
2. Check if the harness is scratched or open circuited.
3. Check if the carriage home position sensor are damaged or
abnormal.
4. Replace the Carriage home position sensor.
5. Replace the Carriage home position sensor harness.
1. Check if the harness (CN16) of the carriage home position sensor is
connected properly.
2. Check if the mounted parts on the SLG board are damaged or
abnormal.
3. Replace the SLG board.
1. Check if the belt tension is loosened.
2. Check if the motor fixing screw is loosened.
3. Check if the carriage wire and the timing belt come off.
4. Check if the connector is connected to the motor properly.
5. Check if the harness of the motor is caught or open circuited.
6. Replace the Scan motor.
7. Replace the Scan motor harness.
Check if the carriage locking screw for packaging is attached.
1. Check if the harness of the carriage home position sensor is
connected properly.
2. Check if the harness is scratched or open circuited.
3. Check if the carriage home position sensor are damaged or
abnormal.
4. Replace the Carriage home position sensor.
5. Replace the Carriage home position sensor harness.
1. Check if the harness (CN16) of the carriage home position sensor is
connected properly.
2. Check if the mounted parts on the SLG board are damaged or
abnormal.
3. Check if 24 V on the SLG board is short-circuited.
4. Check if 24 V is supplied to the SLG board.
5. Replace the SLG board.
1. Check if the belt tension is loosened.
2. Check if the motor fixing screw is loosened.
3. Check if the carriage wire and the timing belt come off.
4. Check if the connector is connected to the motor properly.
5. Check if the harness of the motor is caught or open circuited.
6. Replace the Scan motor.
7. Replace the Scan motor harness.
If the exposure lamp blinks twice, download the correct ROM.
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