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ERROR CODE and TROUBLESHOOTING
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[C970] High-voltage transformer abnormality
[CD60] Sub-hopper toner sensor-Y, -M, -C, -K abnormality
Classification Error item
Process related service call Leakage of the main charger is detected.
Check item Measures
Main charger • Install check
• Check if any foreign matter is on the needle electrode or
main charger grid.
• Harness check
EPU tray (process unit) • 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.
Replace parts Remarks
Main charger
Classification Error item
Process related service call
Check item Measures
EPU tray (process unit) • Connection check (05-2788)
• Connector check
• Harness check
Sub-hopper toner sensor (S38 - S41) • 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
EPU board • Connector check (CN550, CN551)
• Board check
LGC board • Connector check (CN308)
• Board check
Replace parts Remarks
Sub-hopper toner sensor-K/-C/-M/-Y
EPU board
LGC board
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