Canon LBP-1260, Руководство по обслуживанию

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Possible cause Step
Check Result Procedure
1 Does the print Improve when Adjust the image density
the image density is adjusted? from the external device.
High-voltage
contact
2 Clean the printer drum grounding Clean the contacts so they
contact and cartridge contact, then
make proper contact.
perform one test print. Does the print
density Improve?
High-voltage
power supply
PCB
high voltage)
3 About one second after the main YES Check whether the
motor starts, does the voltage between voltage contact is making
and good contact the
on the DC controller PCB change from
primary charging roller of
0 v to about 5
the cartridge. If it Is. replace
the power
supply PCB. If the problem
replacing the
PCB, check by using the
laser malfunction diagnosis
flowchart in Section III c.
DC controller
PCB NO
Replace the DC controller
If the problem persists
after the PCB.
check by using the laser
flowchart in III C.
6-17