Olivetti d-Color MF4003 Service Manual page 436

d-Color MF4003/MF3303
10. Replace DCPS.
3.9.6 C3922, C3925, C3926
Contents
Trouble type
Rank A
Trouble detection condition
Trouble isolation -
Relevant electrical parts
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 connector between the fusing unit-relay CN3-BASEB CN10E for proper connection and correct as necessary.
4. Check the connector between the fusing unit-relay CN2-DCPS CN2 for proper connection and correct as necessary.
5. Check CPUB for proper installation and correct as necessary.
6. Replace the fusing unit.
7. Replace CPUB.
8. Replace BASEB.
9. DCPS F102 or FU181 conduction check.
10. Replace DCPS.
3.9.7 C392B
Contents
Trouble type C392B: Fusing sensor wire breaks detection (difference of temperature)
Rank A
Trouble detection condition The difference between the temperature corrected by the heating roller thermistor/Edg (TH1) and the temperature
detected by the heating roller thermistor/Ctr (TH2) exceeds a predetermined value.
Trouble isolation -
Relevant electrical parts
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 connector between the fusing unit-relay CN3-BASEB CN10E for proper connection and correct as necessary.
4. Check the connector between the fusing unit-relay CN2-DCPS CN2 for proper connection and correct as necessary.
5. Check CPUB for proper installation and correct as necessary.
6. Replace the fusing unit.
7. Replace CPUB.
8. Replace BASEB.
9. DCPS F102 or FU181 conduction check.
10. Replace DCPS.
3.10 C4###
3.10.1 C4091
Contents
Trouble type C4091: Engine communication error
Rank C
Trouble detection condition Communication with the CTL is interrupted for one min. or longer during a stabilization sequence.
Service Manual
• 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)
• C3922: The maximum value and minimum value of detected temperature of the heating roller thermistor/Edg
(TH1) is compared after a lapse of given time from starting of warm up and the gap between the value of
maximum and minimum is below or above given temperatures.
• C3925: The maximum value and minimum value of detected temperature of the heating roller temperature
sensor (TEMS2) is compared after a lapse of given time from starting of warm up and the gap between the
value of maximum and minimum is below or above given temperatures.
• C3926: The maximum value and minimum value of detected temperature of the heating roller thermistor/Ctr
(TH2) is compared after a lapse of given time from starting of warm up and the gap between the value of
maximum and minimum is below or above given temperatures.
• Fusing unit
• C3922: Heating roller thermistor/Edg (TH1)
• C3925: Heating roller temperature sensor (TEMS)
• C3926: Heating roller thermistor/Ctr (TH2)
• DC power supply (DCPS)
• CPU board (CPUB)
• Base board (BASEB)
• Fusing unit
• Heating roller thermistor/Edg (TH1)
• Heating roller thermistor/Ctr (TH2)
• DC power supply (DCPS)
• CPU board (CPUB)
• Base board (BASEB)
L TROUBLESHOOTING > 3. TROUBLE CODE
L-38
Y119930-3