Tektronix Phaser 840, Service Manual

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34
Phaser 840 and 850 Color Printers
4,013.43
PC_DEV_FAULT_GEAR
_GRIND The printhead is unable to move on its tilt axis. The head is
unable to move on its tilt axis, perhaps because it is
colliding with something (head restraint pin, cap, poorly
installed ink loader, screwdriver.) Prior to declaring this
fault, the engine has attempted to move the process motor
through enough revolutions to disengage the head tilt
mechanism, but the motor stalled. The X-axis was then
displaced to the right 3.8 mm (0.15 in.) and the disengage
was repeated, but the motor stalled again. This fault is
then declared.
Table 4 Front panel and fault history log error codes and messages
Error code Meaning
Remove obstruction:
printhead heater cable,
C/W/P assembly, poorly
installed ink loader
4,013.43
Printhead
unable to tilt
Tilt
arm motion
obstructed?
Tilt
arm parked on its
locking pin?
Resistance
approximately
12.5 Ohms?
Replace the power
control board
Replace the x-axis
motor
Measure the resistance
of the x-axis motor
Replace damaged
gears or reset belt
tension
Visually inspect the
process motor drive
train (left side
of printer)
No
No
Yes
Yes
Yes
No
0388-82