7004-7403 Codes - Kyocera FS-C5150DN Service Manual

Code Contents
7004 Toner motor Y error
When the toner motor Y is
driven, the motor over-current
detection signal is detected
continuously for 50 times (5 s)
at 100 ms intervals.
7401 Developing unit K non-
installing error
No density detection signal is
output from toner sensor K in
developing unit K.
7402 Developing unit C non-
installing error
No density detection signal is
output from toner sensor C in
developing unit C.
7403 Developing unit M non-
installing error
No density detection signal is
output from toner sensor M in
developing unit M.
Causes
Defective connec- Reinsert the connector. Also check for conti-
tor cable or poor nuity within the connector cable. If none,
contact in the con- replace the cable.
nector. Toner motor Y and engine PWB (YC26)
Defective drive Check if the rollers and gears rotate
transmission sys- smoothly. If not, grease the bushes and
tem of the toner gears. Check for broken gears and replace if
motor Y. any.
Defective toner Replace the toner motor Y.
motor Y.
Defective engine Replace the engine PWB and check for cor-
PWB. rect operation (see page 1-5-26).
Reinsert the connector. Also check for conti-
Defective connec-
tor cable or poor nuity within the connector cable. If none,
contact in the con- replace the cable.
nector. Developing unit K and Drum relay PWB
(YC6)
Drum relay PWB (YC1) and engine PWB
(YC34)
Defective toner Replace the developing unit K (see page 1-
sensor K. 5-18).
Defective engine Replace the engine PWB and check for cor-
PWB. rect operation (see page 1-5-26).
Defective connec- Reinsert the connector. Also check for conti-
tor cable or poor nuity within the connector cable. If none,
contact in the con- replace the cable.
Developing unit C and Drum relay PWB
nector.
(YC10)
Drum relay PWB (YC1) and engine PWB
(YC34)
Defective toner Replace the developing unit C (see page 1-
sensor C. 5-18).
Defective engine Replace the engine PWB and check for cor-
PWB. rect operation (see page 1-5-26).
Defective connec- Reinsert the connector. Also check for conti-
tor cable or poor nuity within the connector cable. If none,
contact in the con- replace the cable.
nector. Developing unit M and Drum relay PWB
(YC7)
Drum relay PWB (YC1) and engine PWB
(YC34)
Defective toner Replace the developing unit M (see page 1-
sensor M. 5-18).
Defective engine Replace the engine PWB and check for cor-
PWB. rect operation (see page 1-5-26).
1-4-25
Check procedures/
corrective measures
2KT/2KV