Konica Minolta bizhub C658 Service Manual page 1479

bizhub C658/C558/C458/C368/C308/C258
(2) Procedure
1. Check the fusing unit for correct installation (whether it is secured in position).
2. Check the open/close operation of the right door.
3. Check the fusing unit and MFPB for proper connection and correct or change as necessary.
4. Replace the fusing unit.
5. Replace MFPB.
3.13.7 C3825, C3826 (bizhub C368/C308/C258)
(1) Contents
Trouble type
Rank
Trouble detection condition
Trouble isolation
Relevant electrical parts
(2) Procedure
1. Check the fusing unit for correct installation (whether it is secured in position).
2. Check the open/close operation of the right door.
3. Check the fusing unit and MFPB for proper connection and correct or change as necessary.
4. Replace the fusing unit.
5. Replace MFPB.
3.13.8 C3922, C3925, C3926 (bizhub C368/C308/C258)
(1) Contents
Trouble type
Rank
Trouble detection condition
Trouble isolation
Relevant electrical parts
(2) Procedure
1. Check the fusing unit for correct installation (whether it is secured in position).
2. Check the open/close operation of the right door.
3. Check the fusing unit and MFPB for proper connection and correct or change as necessary.
4. Replace the fusing unit.
5. Replace MFPB.
3.13.9 C392A (bizhub C368/C308/C258)
(1) Contents
Trouble type
Rank
Trouble detection condition When the machine is in standby mode after a predetermined period of time after the warm-up stage is started,
Trouble isolation
Relevant electrical parts
• C3825: Fusing abnormally low temperature detection (Main of the heating roller)
• C3826: Fusing abnormally low temperature detection (Center of the heating roller)
A
• C3825: The heating roller temperature sensor (TEMS) continues to detect a temperature lower than a
predetermined one for a predetermined period of time.
• C3826: The heating roller thermistor/2 (TH2) continues to detect a temperature lower than a predetermined
one for a predetermined period of time.
-
• Fusing unit
• C3825: Heating roller temperature sensor (TEMS)
• C3826: Heating roller thermistor/2 (TH2)
• MFP board (MFPB)
• C3922: Fusing sensor wire breaks detection (Edge of the heating roller)
• C3925: Fusing sensor wire breaks detection (Main of the heating roller)
• C3926: Fusing sensor wire breaks detection (Center of the heating roller)
A
• C3922: After a predetermined period of time after the warm-up stage is started, the heating roller
thermistor/1 (TH1) voltage does not decrease by predetermined steps (temperature rise) within a
predetermined period of time.
• C3925: After a predetermined period of time after the warm-up stage is started, the heating roller
temperature sensor (TEMS) voltage does not increase by predetermined steps (temperature rise) within a
predetermined period of time.
• C3926: After a predetermined period of time after the warm-up stage is started, the heating roller
thermistor/2 (TH2) voltage does not decrease by predetermined steps (temperature rise) within a
predetermined period of time.
-
• Fusing unit
• C3922: Heating roller thermistor/1 (TH1)
• C3925: Heating roller temperature sensor (TEMS)
• C3926: Heating roller thermistor/2 (TH2)
• MFP board (MFPB)
C392A: Heating roller temperature sensor contamination (Main of the heating roller)
C
detected temperature of the heating roller temperature sensor (TEMS) higher than a given temperature for a
given period of time consecutively.
-
• Fusing unit
• Heating roller temperature sensor (TEMS)
• MFP board (MFPB)
K TROUBLESHOOTING > 3. TROUBLE CODE
K-151