Olivetti d-Color MF2552 plus Service Manual page 340

Code Contents
6720 Belt rotation error (IHPWB)
6730 Abnormally high IGBT1
temperature (IHPWB)
6740 Abnormally high IGBT2
temperature (IHPWB)
6750 Abnormally output overcur-
rent (IHPWB)
6760 Abnormally AC input over-
current (IHPWB)
6770 Abnormally low electric
power (IHPWB)
Service Manual
Causes
Defective PWB. Replace the IH PWB and check for correct
operation (see page 1-5-51).
Defective fuser Replace the fuser motor.
motor.
Defective fuser Replace the fuser unit (see page 1-5-17).
unit.
Defective PWB. Replace the IH PWB and check for correct
operation (see page 1-5-51).
Defective cooling Replace the IH fan motor.
fan motor.
Defective PWB. Replace the IH PWB and check for correct
operation (see page 1-5-51).
Defective cooling Replace the IH fan motor.
fan motor.
Defective PWB. Replace the IH PWB and check for correct
operation (see page 1-5-51).
Defective fuser Replace the fuser unit (see page 1-5-17).
unit.
Defective PWB. Replace the IH PWB and check for correct
operation (see page 1-5-51).
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.
Defective PWB. Replace the IH PWB and check for correct
operation (see page 1-5-51).
1-4-42
Check procedures/
corrective measures
2NP
Y116141-8