January 2007
2-139
WorkCentre 7132
012-224
Status-indicator-raps
Revision
012-224 Rear Tamper Home Sensor Off RAP
BSD-ON:12.4
After the Rear Tamper started moving away from the home position, the Rear Tamper Home
Sensor did not turn Off within the specified time.
Initial Actions
• Power Off/On
• Remove foreign substances in the Compiler Tray.
Procedure
Manually operate the Tamper mechanism. The Tamper mechanism moves smoothly.
YN
Replace the parts that are interfering with operation.
Execute Component Control [012-221 Rear Tamper Home Sensor]. Actuate the Rear Tamper
Home Sensor with paper.
The display changes.
YN
Check the connections of P/J8805 and P/J8848. P/J8805 and P/J8848 are con-
nected correctly.
YN
Connect P/J8805 and P/J8848.
Check the wire between J8805 and J8848 for an open circuit or a short circuit (BSD 12.4
Flag 1/Flag 2).
The wire between J8805 and J8848 is conducting without an open
circuit or a short circuit.
YN
Repair the open circuit or short circuit.
Measure the voltage between the Finisher PWB P8848-A9 (+) and GND (-) (BSD 12.4
Flag 1).
The voltage is approx. +5VDC.
YN
Replace the Finisher PWB (PL 17.12).
Measure the voltage between the Finisher PWB P8848-A8 (+) and GND (-) (BSD 12.4
Flag 1).
Actuate the Rear Tamper Home Sensor with paper. The voltage changes.
YN
Replace the Rear Tamper Home Sensor (PL 17.9).
Replace the Finisher PWB (PL 17.12).
Alternately execute Component Control [012-026 Rear Tamper Motor FRONT ON] and Com-
ponent Control [012-029 Rear Tamper Motor REAR ON]. The Rear Tamper Motor starts up.
YN
Check the connections of P/J8824 and P/J8848. P/J8824 and P/J8848 are con-
nected correctly.
YN
Connect P/J8824 and P/J8848.
Check the wire between J8824 and J8848 for an open circuit or a short circuit (BSD 12.4
Flag 8).
The wire between J8824 and J8848 is conducting without an open circuit or
a short circuit.
YN
Repair the open circuit or short circuit.
Measure the resistance of the Rear Tamper Motor between J8824-2/5 (COM) and each
point of J8824-1/3/4/6 (BSD 12.4 Flag 7).
The resistance is approx. 750Ohm.
YN
Replace the Rear Tamper Motor (PL 17.9).
Measure the voltage between the Finisher PWB P8848-B2 (+) and GND (-), and between
P8848-B5 (+) and GND (-) (BSD 12.4 Flag 8).
The voltage is approx. +24VDC.
YN
Replace the Finisher PWB (PL 17.12).
Replace the Rear Tamper Motor (PL 17.9). If the problem persists, replace the Finisher
PWB (PL 17.12).
Replace the Finisher PWB (PL 17.12).
A
A
B
B
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