e-STUDIO5520C/6520C/6530C © 2008-2011 TOSHIBA TEC CORPORATION All rights reserved
ERROR CODE and TROUBLESHOOTING
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[CA20] H-Sync detection error
[CF90] Laser optical unit shutter abnormality
1. Take off the left center cover so that the connector relay plate and the shutter motor can be seen.
2. Is the shutter motor working? (Perform the output check: 03-201).
* If it is working properly, proceed to 10. If not, check 3 to 9 below.
3. Check if the shutter motor connector CN214 (2-pin connector) is disconnected.
4. Check if the connector CN218 (8-pin connector) on the connector relay plate is disconnected.
5. Check if the connector CN327 on the LGC board is disconnected.
6. Check if the connector pins are disconnected or the harnesses are open circuited.
7. Check if the conductor pattern on the LGC board is short circuited or open circuited.
8. Replace the shutter motor.
9. Replace the LGC board.
10.Is the shutter motor working and the shutter plate moving? (Perform the output check: 03-201)
* If it is working properly, proceed to 14. If not, check 11 to 13 below.
11. Check if the shutter motor and the shutter crank are assembled correctly, or not damaged.
12. Check if the shutter plate is assembled correctly.
13.Check if the shutter plate contacts with any parts inside the machine.
14.Is the shutter motor working, and the shutter plate reciprocates one cycle to stop at its original
position.
* If it is working properly, proceed to 25. If not, check 15 to 24 below.
15.Perform the input check for the shutter detection sensor (Perform the input check: 03-[All OFF]/
[7]/[D] and /[E]).
16.Manually move the shutter to see that it is “opened” when the crank is in the front, and it is
“closed” when the crank is in the back. Therefore, check if the sensor detects as described in the
table below.
17.Check if the detection sensor is coming off of or lift off from the plate base.
18.Check if the connector of the shutter status detection sensor (CN216, CN217) are disconnected.
19.Check if the detection sensor cut-out part of the shutter plate is deformed.
20.Check if the connector (CN327) on the LGC board disconnected.
21.Check if the connector pins are disconnected or the harnesses are open-circuited.
22.Check if the conductor pattern on the LGC board is open-circuited or short-circuited.
Is the relay connector (CN212) disconnected or almost disconnected? (Are they locked with
the latches?)
Is the harness between the LGC board (CN321) and the SNS board open circuited, broken or
disconnected?
Is the cable between the LGC board (CN326) and the LDR board open circuited or broken?
Are the connectors (CN321 and CN326) on the LGC board disconnected?
|
È
YES Æ 1. Reconnect the harness and the cable.
NO
Has the contact terminal of the cable between the LGC board (CN326) and the LDR board
come off?
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È
NO Æ 1. Replace the laser optical unit. between the power supply unit and the LGC
board.
YES
1. Check if the conductor pattern on the LGC board is open-circuited or short-circuited.
2. Check if the equipment is grounded.
3. Replace the laser optical unit.
4. Replace the LGC board.
States End detection HP detection
Abnormal H H
Open H L
Close L H
Midstream L L
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