Toshiba e-STUDIO2820C Service Handbook page 359

< Validating the color registration control >
Check the operation and correct if necessary. Then be sure to perform the following:
(30) Turn the power ON while [0] and [8] are pressed simultaneously.
(31) Key in "4546", then press the [START] button. (08-4546: Position adjustment control / Mode set-
ting)
(32) Set the value to "5" (performed automatically).
(33) Turn the power OFF.
<Checking the image position aligning sensor>
(34) Clean the image position aligning sensor (S16/S17).
<Checking the power supply>
(35) Check if any of the springs for supplying power to the transfer belt unit is deformed. Replace the
spring if it is deformed.
[CE10] Image quality sensor abnormality (OFF level)
Is the connector of the image quality sensor, or the connector CN337 on the LGC board dis-
connected?
Is the harness between the LGC board and the image quality sensor, or the harness between
the LGC board and the switching power supply open circuited?
YES Connect the connector securely. Replace the harness.
NO
Is the output voltage from the 12V-power supply normal?
(Is +12V voltage normally output by the CN345-7pin on the LGC board?)
NO Check the power supply system and replace the switching power supply.
YES
1. Replace the image quality sensor.
2. Replace the LGC board.
© 2008 TOSHIBA TEC CORPORATION All rights reserved e-STUDIO2820C/2830C/3520C/3530C/4520C
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