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2-84 Service Manual
5016-001
Black or Color Spots Service Check
Note: This symptom may require replacement of one or more
customer replaceable units, designated as supplies or maintenance
items, which are the responsibility of the customer. With the
customer's permission, you may need to install an ITM unit or a print
cartridge.
Developer Drive System Service Check
Print quality problems - Either all blank pages, some color, or one
color missing from the printed page.
FRU Action
1 Print Cartridge Try a new print cartridge.
2 Cleaning Unit Check the fuser cleaning unit for correct
operation and signs of contamination. Replace
the cleaning unit, if any problems are found.
3 ITM Unit Check the ITM belt for signs of color or black
toner left on the belt after the a page has
printed. If toner is found, the ITM is not
functioning properly. Try a new ITM assembly.
4 Fuser Assembly Check the backup and hot rolls for signs of toner
buildup or contamination. If toner buildup is
found, repair or replace the fuser assembly.
FRU Action
1 Print Cartridge(s) Try a new print cartridge(s).
2 Developer Drive
Gear B16
Timing Belt
Developer Sleeve
Idler Pulley
Developer
Decrease Gear
Spring
Check the developer drive gear, timing belt and
developer sleeve located in the motor mounting
stay A assembly for correct operation. If
problems are found, repair or replace Stay A
assembly as needed.
Check the idler pulley, timing belt, developer
decrease gear and spring, located on the right
side frame under the motor mounting C
assembly. If problems are found, repair or
replace any failing FRUs.