Image Control Related Service Call - Toshiba e-STUDIO2820C Service Handbook

6.2.20

Image control related service call

(1) Based on the procedure of [CE10], [CE20] and [CE40] described below, check the status and
take appropriate actions. And then perform the forced performing of image quality closed-loop
control according to the following procedure.
1. While pressing [0] and [5] simultaneously, turn ON the power.
2. Key in [396], and then press the [START] button. Confirm that the image quality control
has finished normally.
(2) After confirming the items in (1), clear the abnormal detection counter of image quality control.
1. While pressing [0] and [8] simultaneously, turn ON the power.
2. Key in [573], and then press the [START] button.
3. Rewrite the displayed status counter from "1" - "16" to "0", and then press the [ENTER]
or [INTERRUPT] button.
4. Key in [574], and then press the [START] button.
5. Rewrite the displayed status counter from "1" - "16" to "0", and then press the [ENTER]
or [INTERRUPT] button.
6. Key in [575], and then press the [START] button.
7. Rewrite the displayed status counter from "1" - "16" to "0", and then press the [ENTER]
or [INTERRUPT] button.
8. Key in [576], and then press the [START] button.
9. Rewrite the displayed status counter from "1" - "16" to "0", and then press the [ENTER]
or [INTERRUPT] button.
10. Turn the power OFF and then back ON. Make sure that the equipment enters the normal
ready state.
[CA00] Color registration abnormality
1. Check if there is any abnormality on the hand grips and rods of the main charger cleaner. Correct if
there is.
2. Check if the drum is rotated properly by turning the coupling of the developer unit. Correct the auger
and the surrounding hardware if not.
3. Check if the connectors CN337, CN346 and CN358 of the LGC board are disconnected from the
laser optical unit or the harnesses are open circuited.
4. Check if there is any stain or scratch on the glass surface of the laser optical unit. Clean or correct if
there is.
5. Check if there is any stain on the image quality sensor and Image position aligning sensors.
6. Check if the sensor shutter is working properly.
* If the error still occurs, check the following.
< Invalidating color registration control >
(1) Turn the power ON while [0] and [8] are pressed simultaneously.
(2) Key in "4546", then press the [START] button. (08-4546: Position adjustment control / Mode set-
ting)
(3) Set the value to "0" (not performed automatically).
(4) Turn the power OFF.
e-STUDIO2820C/2830C/3520C/3530C/4520C
ERROR CODE AND TROUBLESHOOTING
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