Tektronix Phaser 840, Service Manual

Page: 64 / 207

Service Guide
53
8. Media jammed on or
completely under stripper
fingers or rapid release
guide - margin too large or
too small a. Preheat sensor not
seated properly
b. Preheat sensor not
properly assembled to
bracket
c. Preheat sensor is bad
a. Confirm bracket is
properly screwed down
onto load frame
b. Reseat sensor
c. Replace preheat exit
sensor
9. Media over stripper
fingers or rapid release
guide - not damaged and
stopped at strip sensor a. Problem with strip flag
b. Bad transfix exit sensor a. Replace pivoting blue
lower exit guide
b. Replace sensor
assembly
10. Media under transfix
roller right at stripper
fingers a. Eccentric solenoid
problem
b. Transfix cam problem
c. Cam spring problem
a. Replace eccentric
solenoid
b. Replace cam
c. Replace drum transfix
assembly
11. Media doesn't make it
to the transfix roller a. Too much drag in drive-
train or preheater
a. Short-grained media
a. Use PC-based
diagnostics to run
“verify drive current
requirements” from the
paper path group, to
check for stall, or feel for
unevenness in motor
rotation by manually
turning. Replace paper
path motor if needed.
Check electronics if
needed
b. Use long-grained media
22,900.04 Unexpected front door event
1. Media perfect in media
path or tray a. Unknown (static?)
b. Someone opened a door a. Run again
b. Close door
22,901.05 Unexpected exit cover event
1. Media perfect in media
path or tray a. Unknown (static?)
b. Someone opened a door a. Run again
b. Close door
31,000 Motor Faults
31,001.4x
MP_FAULT_AUX_MOTOR
_ERROR Not used as a device fault condition.
31,002.4x
MP_FAULT_PROCESS_
MOTOR_STALL Not used as a device fault condition.
31,003.4x
MP_FAULT_PREHEAT_
EXIT_SENSOR_BAD Declared when the sensors around the preheater exit
sensor indicate the presence or absence of media
contrary to that indicated by the preheater exit sensor.
This is usually caused by a piece of media stuck in the
preheater exit sensor.
Error code
Additional clues Probable cause Action