Diagnostic Information 2-87
5016-001
Low Image Density Service Check
Note: Media which is out of specification, or media containing a
high moisture content may cause this problem.
FRU Action
1 Print Cartridges Run the print quality tests pages and determine
the failing print cartridges producing light print or
low image density. The toner cartridge may also
be low on toner.
Replace any failing cartridges.
2 Intermediate
Transfer Unit
(ITM)
Be sure the ITM is installed correctly and the
contacts on the ITM are contacting the grid block 1
and 2 high voltage contacts.
If no problem is found try a new ITM unit.
3 Transfer Roller Note: The transfer roll is spring loaded against the
inner cover so that it properly contacts the transfer
belt in the ITM unit.
Check the transfer roll for correct installation. Be
sure the transfer roll rotates freely.
Check the left and right side transfer roll springs
and bushings for signs of binding or damage.
Replace parts as necessary.
4 High Voltage
Contacts
Grid Block 1
Grid Block 2
Check the high voltage contacts in grid block 1
and 2 to ensure they are clean, not bent, deformed
or pitted.
If incorrect, replace the failing grid block assembly.
