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041-325 MCU PWB F2 Open RAP
BSD-ON:
BSD 1.9 - Power Interlock Switching (2 of 2)
BSD-ON:
BSD 9.1 - CRU Life Control
BSD-ON:
BSD 9.3 - Development and Toner Dispense Control
Fuse 2 on the MCU PWB has blown.
NOTE: Remove the cause of Fuse meltdown before replacing the MCU PWB.
When turning the power OFF, turn OFF the power switch first and then the main power switch.
Chip fuses on the MCU PWB seldom fail because of an internal MCU problem. The cause is
almost always a short circuit in the wiring or components fed by the fuse. You MUST determine
the source of the short before replacing the MCU PWB.
Procedure
1.
Dispense Motor for revolution failure:
2.
Check the Toner Dispense Motor +24 Volt
voltage, and then replace the faulty parts or repair the circuits.
3.
Check the CRU Fan +24 Volt
IOT wirenets
then replace the faulty parts or repair the circuits.
4.
Turn the power OFF and replace the MCU PWB
Status Indicator RAPs
041-325, 041-326
CAUTION
Component Control
[093-002]
(PL
8.2)
IOT wirenets
circuits for overcurrent and over-
circuits for overcurrent and overvoltage, and
(PL
18.2).
BUS Updated 12/2011
041-326 MCU PWB F3 Open RAP
BSD-ON:
BSD 1.9 - Power Interlock Switching (2 of 2)
BSD-ON:
BSD 9.2 - Charging and Exposure
BSD-ON:
BSD 8.5 - Registration
Fuse 3 on the MCU PWB has blown.
NOTE: Remove the cause of Fuse meltdown before replacing the MCU PWB.
When turning the power OFF, turn OFF the power switch first and then the main power switch.
Chip fuses on the MCU PWB seldom fail because of an internal MCU problem. The cause is
almost always a short circuit in the wiring or components fed by the fuse. You MUST determine
the source of the short before replacing the MCU PWB.
Procedure
1.
Check the HVPS
(PL
18.1) circuit +24 Volt
and then replace the faulty parts or repair the circuits.
2.
Check the Registration Clutch
overvoltage, and then replace the faulty parts or repair the circuits.
3.
Turn the power OFF and replace the MCU PWB
07/2011
2-756
CAUTION
IOT wirenets
for overcurrent and overvoltage,
(PL
15.1) circuit +24 Volt
IOT wirenets
for overcurrent and
(PL
18.2).
WorkCentre 5335 Family Service Documentation
Initial Issue
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