Olivetti d-color MF651, Service Manual, Page: 949 / 1053

Field Service Ver. 2.0 Jul. 2009 22. IMAGE QUALITY PROBLEM
889
TROUBLESHOOTING
22.3.25 Printer monocolor: blank copy, black copy
A. Typical faulty images
B. Troubleshooting procedure
A02EF4C518DA
Blank copy Black copy
Step Section Check item Result Action
1 Image check A blank copy occurs. YES Check PH unit connector for
proper connection.
2 Imaging unit Coupling of IU drive mechanism
is installed properly. NO Check and correct drive
transmitting coupling.
Change IU.
3 The PC drum charge corona
voltage contact or PC drum
ground contact of the imaging unit
is connected properly. NO Check, clean, or correct the con-
tact.
4 High voltage unit/
1 Connector is connected properly. NO Reconnect.
5 The problem has been eliminated
through the check of step 4. NO Change high voltage unit/1.
o
Change printer control board
o
Change PH unit.
Y110571-1 Service Manual