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BUS Updated 12/2011
07/2011
2-772
WorkCentre 5335 Family Service Documentation
059-316, 059-317
Initial Issue
Status Indicator RAPs
059-316 Rear Thermistor Failure RAP
BSD-ON:
BSD 10.1 - Fusing Heat Control
The Rear Thermistor has an open circuit.
Initial Actions
•
Power OFF/ON
Procedure
Check the installation of the Fuser Unit. The Fuser Unit is securely installed.
Y
N
Install the Fuser Unit securely.
Check the resistance of the Rear Thermistor between
J621
-7 and
J621
-3 (
BSD 10.1
). The
resistance is 3k ohms or higher.
Y
N
Replace the Fuser Unit (
PL 7.1
).
Check the Rear Thermistor wiring between
P/J411
and
J621
for an open circuit or a short cir-
cuit (
BSD 10.1
). The wire between
P/J410
and
J621
is conducting without an open cir-
cuit or a short circuit.
Y
N
Repair the open circuit or short circuit.
Replace the Fuser Unit (
PL 7.1
). If the problem persists, replace the MCU PWB (
PL 18.2
).
059-317 Rear Thermistor Over Temperature Failure RAP
BSD-ON:
BSD 10.1 - Fusing Heat Control
The Rear Thermistor detected a temperature higher than the specified value.
Procedure
NOTE: When this fault occurs, NVM location 744-005 is set to 1, 2, or 3, depending on the
fault. You must reset this location to 0 in order to clear the fault.
Check the resistance of the Rear Thermistor between
J621
-7 and
J621
-3 (
BSD 10.1
). The
resistance is 3k ohms or higher.
Y
N
Replace the Fuser Unit (
PL 7.1
).
Check the Rear Thermistor wiring between
P/J411
and
J621
for an open circuit or a short cir-
cuit (
BSD 10.1
). The wire between
P/J410
and
J621
is conducting without an open cir-
cuit or a short circuit.
Y
N
Repair the open circuit or short circuit.
Replace the Fuser Unit (
PL 7.1
). If the problem persists, replace the AC Drive PWB (
PL 18.2
)
before replacing the MCU PWB (
PL 18.2
).