Xerox 8850 Service Manual page 31

60K Ft. or 20 Replace the Media Exit Drive Roll
Km
INTERVAL TASK
1st 10K ft. or 3K Remove the drive chain slack.
m
40K ft. or 13K Remove the drive chain slack.
m
INTERVAL TASK
Normal Call Brush the developer from the Devel-
oper Seal and lower edge of the Devel-
oper Housing back into the Developer
Mag Roll and then clean the Seal.
Normal Call Check that the Developer Housing is
level.
Normal Call Check the canister for proper rotation. If the canister is not rotating correctly, the copies will
Normal Call Check the Developer drives.
Normal Call Check, clean, or replace the Developer
Housing spacing wheels, as required.
30K ft. 9 Km Check the trickle tube and toner Y tube
for obstruction.
30K ft. Check the Pressure
9 Km Tubes.
200 K ft. Replace Toner Dust Trap.
60 Km
200K ft. Replace Toner Dust Filter.
60 Km
200K ft. Check Vacuum Tube.
60 Km
INTERVAL TASK
Normal Call Clean the covers.
INTERVAL TASK
Normal Call Check the cam for lubrication.
8850/ 510DP
Table 4 Media Transport and Lower Sheet Feed Assembly
Roll wear causing wavy media and media jams.
Table 5 Media Feed
REASON
Feeding problems.
Feeding problems.
Table 6 Developer Module
REASON
Image quality problems can occur.
If the developer is not level, density may not be uni-
form side to side.
be light.
Worn gears will cause the housing to move up or
down, which will cause print quality defects.
Contaminated or worn spacing wheels will cause
print quality defects.
An obstructed Y tube or trickle tube will clog the
cleaning/trickle system.
Equalization Increased contamination due to poor air flow in the
Developer Housing.
Minimize toner dust contamination.
Minimize toner dust contamination.
An obstruction in the Tube will clog the Dust Control
System.
REASON
Customer satisfaction.
REASON
To ensure correct Cutter operation. The Cutter will
not provide a straight cut.
Replace the Media Exit Drive Roll
Loosen the feed motor hardware to allow the spring to tension the chain.
Tighten the hardware.
Loosen the feed motor hardware to allow the spring to tension the chain.
Tighten the hardware.
Clean as required.
Developer material should not be uniform from end to end. Check the level
of the copier.
Check the dry ink dispense motor for binding. Check that the cartridge is
locked in the drive hub.
Check the gears for worn or broken teeth; replace the gears, if necessary.
Ensure that the drive coupling is engaged.
Clean or replace spacing wheels.
Clean as required.
Remove Developer Housing. Remove and vacuum Pressure Equalizer
Tubes, vacuum lower holes for toner.
Remove existing Trap. Install a new Trap.
Remove existing filter. Install new Filter.
Clean as required.
Table 7 Covers
Formula A and antistatic fluid
Table 8 Cutter
Place a light film of lubrication on the cam surface.
03/2003
1-15
(PL 10.4).
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Service Call Procedures
Maintenance Procedures