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4-54 Phaser 8400/8500/8550/8560 Color Printer Service Manual
General Troubleshooting
Mechanical Initialization (8500/8550/8560)
Home XA and move XA to the
HEADTILT position
6000
Use the Headtilt
Solenoid and tilt the
head to Standby
7007, 7006, 7008, 8005,
8055, 8007, 8008, 8009
Is the
head tilt CAM
engaged
(head tilted?)
Move the wiper and the head to determine if
the head is fully restrained or not. This will
allow the head to tilt to the standby position so
the wiper can be homed.
7007, 7006
Home the CAP/wiper
without disengaging the
Head Tilt CAM
8005,
8007, 8008, 8009
Engage the Headtilt
Solenoid
MECHANICAL RECOVERY
Start Mechanical
Recovery
Start the
thermals.
13,xxx
Close preheater
Set FIRMWARE states:
CapState = UNKNOWN
HeadTiltState = UNKNOWN
DmfixState = UNKNOWN
YaState = HOMELESS
Mechanical Recovery
POWER ON
Unbind Media
Path Motor and
HOME the MPT
31,001
Home the Y-Axis
5001, 5004
Wait for head to read
OK_TO_WIPE
temperatures
13,xxx
s8500-137
No
Values in NVRAM are used to determine if
printhead and wiper have contact or if the
printhead was parked on last power down. If
printhead and wiper are in contact, the printhead
warms first before moving the wiper.
The BLUE line traces what happens if printhead
was parked on last power down.
NOTE: Headtilt CAM will be engaged when the
printhead is in the PARKED (restrained) position.
The RED numbers indicate errors that may be
displayed at that point in the process.
Yes
No
Home XA
6000
Did
the Process Motor
Device Fault?
Move XA to Left
Side Hard Stop
6000
Move XA to Tilt
Position
6000
homeDmfix
again
4025
Move XA to Left Side
Hard Stop
6000
Move XA to Tilt position
6000
Move Head to the
Standby position,
7007, 7006, 7008, 8005,
8055, 8007, 8008, 8009
Move Head to the
Home/Print position
7006, 7010
Start YA SLEW
5004
DONE
Jog the X
Axis in
order to
release the
HeadTilt
Arms.
Rehome XA
6000
RECOVERY ROUTINE
Device Fault Codes
80xx - Wiper
8021 - Pump Not Inited
7009 - Wiper Alignment
7002 - PM stalled
70xx - Headtilt
7006 - Headtilt Solenoid
7014 - Head Not Restrained
31001 - Media Path
5001 - Ya Home Timer
5004 YA - General Motion Error
6000 - XA Error
4025 - PM Init Failed (homeDmfix)
4024 - Wiper Alignment Failed
Others... - Thermal faults, ECM
Faults, HC, PM faults oiling drum
_headParkedOn
LastPowerDown?
homeDmfix
7002
Move Head to the
PARK position,
7007, 7008, 8005, 8055,
8007, 8008, 8009, 7014
After the printer is warm,
the head will tilt to the
print position and
Oil Drum 4 times
Move Cap/Wiper to the PARK
ARMS - and restrain head
again.
8035, 7009
s8500-138
Jog the X
Axis in order
to release the
HeadTilt
Arms.
Try to recover from
Process Motor Stall
Yes
No
Yes
No
Yes
Warmup will be responsible for moving
the head to the print position after the
wipe and purge are performed.