Kyocera TASKalfa 3050ci Service Manual page 298

Code Contents
6920 Coil fan motor 1 error
When the coil fan motor 1 is
driven, alarm signal is
detected for 5 s continuously.
6930 Coil fan motor 2 error
When the coil fan motor 2 is
driven, alarm signal is
detected for 5 s continuously.
6940 IH fan motor error
When the IH fan motor is
driven, the alarm signal is
detected for 5 s continuously.
6950 Fuser IH PWB communica-
tion error
No response is received in 30
ms since a command is sent
to IHCPU.
A checksum error is detected
10 times in succession.
6990 Fuser power supply incom-
patibility
Information won't match
between the engine backup
and the fuser IH PWB.
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. Coil fan motor 1 and front PWB (YC4)
Front PWB (YC3) and engine PWB (YC7)
Defective coil fan Replace coil fan motor 1.
motor 1.
Defective engine Replace the engine PWB and check for cor-
PWB. rect operation (see page 1-5-54).
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. Coil fan motor 2 and engine PWB (YC26)
Defective coil fan Replace coil fan motor 2.
motor 2.
Defective engine Replace the engine PWB and check for cor-
PWB. rect operation (see page 1-5-54).
Defective connec- Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
tor cable or poor
contact in the con- replace the cable.
nector. IH fan motor and feed PWB 1 (YC11)
Feed PWB 1 (YC2) and engine PWB (YC5)
Defective IH fan Replace the IH fan motor.
motor.
Defective engine Replace the engine PWB and check for cor-
PWB. rect operation (see page 1-5-54).
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. Fuser IH PWB (YC4) and engine PWB
(YC26)
Defective fuser IH Replace the fuser IH PWB and check for
PWB. correct operation.
Defective engine Replace the engine PWB and check for cor-
PWB. rect operation (see page 1-5-54).
Defective fuser IH Replace the fuser IH PWB and check for
PWB. correct operation.
Defective engine Replace the engine PWB and check for cor-
PWB. rect operation (see page 1-5-54).
1-4-58
2LK/2LN/2LM/2LC
Check procedures/
corrective measures