Konica Minolta PagePro 1390 MF - Manual (Page 141)

T-31
(8) Printer system: Blank or black prints
Step Check Result Action
1 Is a printed page blank? YES Check the PH Unit connectors
for proper connection.
2 Is the coupling of the drive mechanism of
the Imaging Cartridge properly connected? NO Check the coupling of the
drive mechanism for connec-
tion and correct it as neces-
sary, or replace the Imaging
Cartridge (Drum Cartridge,
Toner Cartridge).
3 Is the drum charge voltage contact point or
PC Drum ground contact point of the Imag-
ing Cartridge properly connected? NO Check, clean, or correct the
contact point.
4 Is the High Voltage Unit (HV1) connector
connected properly? NO Connect it properly.
5 Was the problem eliminated when step 4
was checked? NO Replace the High Voltage Unit
(HV1).
Replace the Controller/Image
Control Board (PWB-I).
Replace the PH Unit.
4011T035AA 4011T036AA