e-STUDIO5540C/6540C/6550C/5560C/6560C/6570C © 2011 - 2015 TOSHIBA TEC CORPORATION All rights reserved
ERROR CODE and TROUBLESHOOTING
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Check the drum surface potential sensor output (05-2782).
Check the values of the sub codes “3”, “8” and “13” in the following list.
Perform 3-1 or 3-2 according to the output value.
[ 3-1 ] If the drum surface potential sensor output is “0-30” or “1010-1020” in the grid bias
voltage of the target sensor, the drum surface potential sensor shutter may become
closed.
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Connector between the V0S board and the EPU board
Connector between the drum surface potential sensor and the V0S board
Connector between the drum shutter solenoid and EPU board
Connectors CN308 and CN310 of the LGC board
|NO Reconnect the connector when it is disconnected. Then perform image
quality closed-loop control (05-2742) and check the controlling status.
YES
Sub-code Color Grid bias Voltage
measurement [-V]
0Y
300
1M
2C
3K
5Y
900
6M
7C
8K
10 Y
500
11 M
12 C
13 K
Is the shutter opened and closed smoothly when the arm of the drum shutter solenoid is moved
by hand and is the detecting element of the drum surface potential sensor (2 mm) seen
completely when the drum shutter is opened?
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NO If the sensor or the shutter is dirty, wipe off with soft pad or cloth.
If a spring or any part connecting the solenoid and the shutter has been
removed, reinstall it securely.
Then perform “4. Image quality closed-loop control (05-2742) / check the
controlling status” (described later).
When an adjustment error occurs
Replace the shutter and then perform “4. Image quality closed-loop control
(05-2742) / check the controlling status” (described later).
When an adjustment error occurs
YES
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