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Possible Cause Action
Defective laser shutter. Check the laser shutter for free operation
when inserting the EP Toner Cartridge.
EP Cartridge Support damaged,
improperly positioned, or missing.
Refer to item 4 in Figure 8-4a. Guide
must be installed properly above the EP
Cartridge, between the laser shutter
opening and the fuser stop plate.
Toner Cartridge. No toner is available for
print.
Remove sealing tape or replace the
Toner Cartridge.
No Transfer Roller voltage. Without
transfer charge roller voltage, toner
cannot be attracted from the surface of
the drum to the paper.
Perform the “Half Self Test Functional
Check” which follows to check all other
electro-photographic processes.
No Developing Bias. With no Developing
Bias charge, toner is not attracted to the
drum.
Refer to “High Voltage System Checks.”
No drum ground path. With no ground
path the drum cannot discharge. The
negative charge on the drum repels
toner, and leaves a white page.
Refer to “High Voltage System Checks.”
Bad Laser Scanning Cable Assembly.
Low-level signals exchanged between
the Laser/Scanning Assembly, and the
DC Controller may be affecting laser
output.
Replace the Laser/Scanning Cable
Assembly.
Table 7-28
White or Blank Pages
7-48 Troubleshooting