Toshiba e-STUDIO2820C Service Handbook page 358

Abnormal
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Normal
If the density level is low on both front and rear sides, is the image printed normally in cases
other than noted above?
| NO
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
YES
(Proceed to step (28).)
< Checking with the enforced image position adjustment >
(28) Turn the power ON while [0] and [5] are pressed simultaneously.
(29) Key in "4719", then press the [START] button. (05-4719: Enforced position adjustment)
Does the error [CA00] occur during the position adjustment control?
| YES
NO (Proceed to step (30).)
e-STUDIO2820C/2830C/3520C/3530C/4520C
ERROR CODE AND TROUBLESHOOTING
• Abnormality in the main high-voltage transformer corresponding to the
color or abnormality in the laser optical unit.
• Replace one of 4 main high-voltage transformers which possibly con-
tains abnormality, and also the one possibly normal. Then print the
same test pattern.
• If the color which turned into black solid changes along with the
replacement of the main high-voltage transformer, this main high-volt-
age transformer is defined as abnormal.
• If the color which turned into black solid does not change, check if the
harness between the LGC board and the main high-voltage trans-
former is broken or if the power is sufficiently supplied to the main
charger (breaking of the high-voltage harness or connection defect). If
no problem is found, check the laser optical unit.
|
Check the following items:
1. Check if the photoconductive drum and the transfer belt are rotating. If
not, correct their mechanism.
2. Check if there are abnormal stain, large breaking or scratches on the
transfer belt surface.
3. Check if the connector of the transfer transformer is disconnected.
4. Check if the high-voltage harnesses of the main high-voltage trans-
former and the transfer transformer are disconnected.
5. Check if the harness between the LGC board and the transfer trans-
former is broken.
6. Check if the high-voltage joints of the transfer belt unit are securely
contacted or if they are not stained.
7. Check if the high-voltage harness is broken.
8. Check if the connector of the main high-voltage transformer is discon-
nected.
9. Check if the harness between the LGC board and the main high-volt-
age transformer is broken.
10.Replace the transfer transformer.
11. Replace the main high-voltage transformer.
|
Proceed to step (23).
Proceed to step (5).
6 - 92
© 2008 TOSHIBA TEC CORPORATION All rights reserved