Toshiba e-STUDIO6520c - Laser Optical Unit Related Service Call

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ERROR CODE and TROUBLESHOOTING
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6.2.18 Laser optical unit related service call
[CA10] Polygonal motor abnormality
Is the polygonal motor rotating? (Perform the output check: 03-103)
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NO Æ 1. Check if the relay connector CN207 (28-pin connector) is almost
disconnected.
2. Check if the connector (CN329) on the LGC board is disconnected.
3. Check if the connector pins are disconnected or the harnesses are open-
circuited.
4. Check if the conductor pattern on the LGC board is short-circuited or open-
circuited.
5. Replace the LGC board.
6. Replace the laser optical unit.
YES
Is the printed image distorted or does an abnormal noise occur?
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YES Æ 1. Check if the laser unit cooling fan (front) and the laser unit cooling fan (rear)
have stopped.
(Perform the output check: 03-437 for front side, 03-439 for rear side)
2. Check if the suction areas of the laser unit cooling fan (front) and the laser
unit cooling fan (rear) are plugged up.
3. Check if the relay connector CN207 (28-pin connector) is almost
disconnected.
4. Check if the connector (CN329) on the LGC board is almost disconnected.
5. Check if the harnesses are almost open circuited or the connector pins are
almost disconnected.
6. Check if the conductor pattern on the LGC board is short circuited or open
circuited.
7. Replace the laser optical unit.
8. Replace the LGC board.
NO
Does an image control related/process related service call or an image failure occur?
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NO Æ 1. Check if the laser unit cooling fan (front) and the laser unit cooling fan (rear)
have stopped.
(Perform the output check: 03-437 for the front side, 03-439 for the rear
side)
2. Check if the suction areas of the laser unit cooling fan (front) and the laser
unit cooling fan (rear) are clogged up.
3. Check if the relay connector CN207 (28-pin connector) is almost
disconnected.
4. Check if the connector (CN329) on the LGC board is almost disconnected.
5. Check if the harnesses are open-circuited or the connector pins are almost
disconnected.
6. Check if the conductor pattern on the LGC board is short-circuited or open-
circuited.
7. Replace the laser optical unit.
8. Replace the LGC board.
YES
Perform the troubleshooting procedures for when an image control related/process related
service call or an image failure occurs.
Replace the laser optical unit.
Replace the LGC board.