Copy Process Related Service Call - Toshiba e-STUDIO2820C Service Handbook

6.2.21

Copy process related service call

[C370] Transfer belt motor abnormality
(1) Check if the connector of the transfer belt unit is not disconnected.
(2) Is the transport belt unit working normally?
(3) Check if the connector of the transfer belt motor is not disconnected.
(4) Check if the connector CN342 on the LGC board is disconnected.
(5) Check if the fuse on the switching power supply has blown.
(6) Check if the transfer belt release detection sensor is working properly.
(7) Replace the transfer belt motor.
(8) Replace the LGC board.
[C380] Auto-toner sensr-K abnormality (upper limit)
[C381] Auto-toner sensr-K abnormality (lower limit)
[C390] Auto-toner sensr-C abnormality (upper limit)
[C391] Auto-toner sensr-C abnormality (lower limit)
[C3A0] Auto-toner sensr-M abnormality (upper limit)
[C3A1] Auto-toner sensr-M abnormality (lower limit)
[C3B0] Auto-toner sensr-Y abnormality (upper limit)
[C3B1] Auto-toner sensr-Y abnormality (lower limit)
(1) Is the developer unit installed properly?
(2) Check if the connector CN340 on the LGC board is disconnected from the auto toner sensor or
the harnesses are open circuited. Correct if necessary.
(3) Check if there is any foreign matter such as toner in the drawer connector of the equipment and
fuser unit or the connector of the auto toner sensor. Remove if there is and reconnect it.
(4) Replace the auto-toner sensor.
(5) Replace the LGC board.
[C970] High-voltage transformer abnormality
(1) Is the main charger installed securely?
(2) Check if the spring of high-voltage supply contact point is deformed.
(3) Check if the needle electrode is broken or the main charger grid is deformed.
(4) Check if any foreign matter is on the needle electrode or main charger grid.
e-STUDIO2820C/2830C/3520C/3530C/4520C
ERROR CODE AND TROUBLESHOOTING
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