Diagnostic information 2-125
5021-0XX
White print service check
Blank page (no print at all) is printed or a specific color is missing.
Problem area Action
Solid white print
1 Optical Unit (Printhead) Laser light path is blocked by paper or
other material stuck at the opening of
the optical unit. Ensure there are no
foreign particles stuck at the opening
of the optical unit.
2 Transfer roller Transfer roller is not properly
installed. Remove transfer roller and
reinstall. See “Transfer roller
removal” on page 4-8. Ensure
transfer roller bias pole is touching
spring contact on left side (as viewed
from front of printer) of roller.
3 HVPS Replace faulty HVPS. See “High
voltage power supply (HVPS)
removal” on page 4-59.
One color missing
4 Toner cartridge Replace faulty toner cartridge.
5 Toner retract system Replace specific faulty toner retract
system. See “Toner retract solenoid
and cam removal” on page 4-64.
