Xerox Phaser 8400 Service Manual page 80

4,024.42:
This fault code indicates a problem with the wiper. The wiper is not
aligned properly and engaged the headtilt while in the waste lock position.
Troubleshooting Procedure for 4,024 Error Code
Step Questions and Actions
1 1. Ensure the process drive system is correctly
homed as described in "Homing the Process
Gear Drive Train" on page 6-8.
2 1. Run the Check Wiper Alignment test.
2. Did the test fail?
3 1. Run the Wiper Drive test.
2. Did the test fail?
4 1. Inspect the wiper drive system and wiper
lock system. Look for ink in the belts.
2. Is the wipe system operating correctly?
5 1. Inspect the head maintenance clutch.
2. Is there the presence of oil or
contamination?
6 1. Run the Head Maintenance Clutch test.
2. Is the head maintenance clutch operating
correctly?
4,025.46:
This fault code indicates a problem with the process control system.
Cannot successfully home the drum transfix mechanism.
Troubleshooting Procedure for 4,025 Error Code
Step Questions and Actions
1 1. Check for obstructions around the printhead.
Look for ink shards in gears of the tilt drive.
2. If the printhead is obstructed, remove any
obstruction from the system and reboot.
3. Did this fix the problem?
2 1. Ensure the wiring around the printhead is
routed properly.
2. Is the wiring blocking the printhead?
3-14
Yes
Is the problem
fixed?
Perform the
Wiper
Alignment
Procedure and
test again. Go to
Step 3 if the test
fails again.
Go to Step 4.
Go to Step 5.
Clean the
interior of the
system and
replace clutch if
necessary.
Replace in the
following order:
■ Exit module
■ Media drive
gearbox
■ Wiper blade
Yes
Complete.
Re-route all
wiring to the
printhead.
Phaser 8400/8500/8550 Color Printer
No
Go to Step 2.
Go to Step 3.
Go to Step 6.
Replace the
problem
component.
Go to Step 6.
Replace the
head
maintenance
clutch.
No
Go to Step 2.
Go to Step 3.