Toshiba e-STUDIO5540C Service Manual page 178

[C970] High-voltage transformer abnormality
Classification
Process related service call
Check item
Main charger
EPU tray (process unit)
Replace parts
Main charger
[CD60] Sub-hopper toner sensor-Y, -M, -C, -K abnormality
Classification
Process related service call
Check item
EPU tray (process unit)
Sub-hopper toner sensor (S38 - S41) •
EPU board
LGC board
Replace parts
Sub-hopper toner sensor-K/-C/-M/-Y
EPU board
LGC board
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Leakage of the main charger is detected.
• Install check
• Check if any foreign matter is on the needle electrode or
main charger grid.
• Harness check
• Check if any foreign matter is adhering on the high-voltage
terminal of the EPU tray.
• Check if there is a sign of discharge on the joint of the
high-voltage terminal of the EPU tray and the main
charger. Correct if there is.
• Connection check (05-2788)
• Connector check
• Harness check
Sensor check
(Perform the input check: K: 03-[FAX]ON/[0]/[C], C: 03-
[FAX]ON/[0]/[F], M: 03-[FAX]ON/[9]/[A], Y: 03-[FAX]ON/[9]/
[D], Installation detection: 03-[FAX]ON/[9]/[G])
• Connector check
• Harness check
• Connector check (CN550, CN551)
• Board check
• Connector check (CN308)
• Board check
e-STUDIO5540C/6540C/6550C/5560C/6560C/6570C
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Error item
Measures
Remarks
Error item
Measures
Remarks
ERROR CODE and TROUBLESHOOTING
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