Specifications

3
Flowcharts and TablesTroubleshooting
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Step Check Result Action
3 Are the high-voltage
contacts making good
contact with the toner
cartridge?
No Clean the contacts or replace the
high-voltage contact assembly.
4 Remove the toner cartridge
from the printer. Is any
foreign material blocking
the laser beam outlet on the
inside of the printer
chassis? Is any foreign
material adhering to the
laser beam access slot on
the toner cartridge?
Yes Remove the foreign material.
5 Replace the transfer roller.
Does the print quality
improve?
Yes Problem solved.
6 Connect the multimeter
between connectors P15-7
and P15-1 on the DC
controller board. Does the
voltage measure +24 VDC
when you switch on the
printer?
No Go to Table 11, Power Supply Failure
(+24 VDC).
7 For Steps 7 and 8, remove
the top covers, rear cover,
I/O board mount, and power
supply switch lever.
Remove the high-voltage
contact assembly and
check the continuity on all
the high-voltage contacts.
Do you find continuity on all
the high-voltage contacts?
No Replace the high-voltage contact
assembly.
8 Is there continuity between
connector RTN (red wire)
on the high-voltage power
supply and the red spade
connector on the paper
delivery guide?
No Replace the paper delivery guide.
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