January 2007
2-152
WorkCentre 7132
012-310
Revision
Status-indicator-raps
012-310 Front Tamper Home Sensor On Fail RAP
BSD-ON:12.4
After the Front Tamper started moving to the home position, the Front Tamper Home Sensor
did not turn On within 800ms.
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 [012-220 Front Tamper Home Sensor]. Actuate the Front Tamper
Home Sensor with paper. The display changes.
The display changes.
YN
Check the connections of P/J8807 and P/J8848. P/J8807 and P/J8848 are con-
nected correctly.
YN
Connect P/J8807 and P/J8848.
Check the wire between J8807 and J8848 for an open circuit or a short circuit (BSD 12.4
Flag 5/Flag 6).
The wire between J8807 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-A3 (+) and GND (-) (BSD 12.4
Flag 6).
The voltage is approx. +5VDC.
YN
Replace the Finisher PWB (PL 17.12).
Measure the voltage between the Finisher PWB P8848-A2 (+) and GND (-) (BSD 12.4
Flag 5).
Actuate the Front Tamper Home Sensor with paper. The voltage changes.
YN
Replace the Front Tamper Home Sensor (PL 17.9).
Replace the Finisher PWB (PL 17.12).
Alternately execute Component Control [012-020 Front Tamper Motor FRONT ON] and Com-
ponent Control [012-023 Front Tamper Motor REAR ON]. The Front Tamper Motor starts up.
YN
Check the connections of P/J8823 and P/J8848. P/J8823 and P/J8848 are con-
nected correctly.
YN
Connect P/J8823 and P/J8848.
Check the wire between J8823 and J8848 for an open circuit or a short circuit (BSD 12.4
Flag 7).
The wire between J8823 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 Front Tamper Motor between J8823-2/5 (COM) and each
point of J8823-1/3/4/6 (BSD 12.4 Flag 7).
The resistance is approx. 750Ohm.
YN
Replace the Front Tamper Motor (PL 17.9).
Measure the voltage between the Finisher PWB P8848-B8 (+) and GND (-), and between
P8848-B11 (+) and GND (-) (BSD 12.4 Flag 7).
The voltage is approx. +24VDC.
YN
Replace the Finisher PWB (PL 17.12).
Replace the Front 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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