Xerox WorkCentre 7132 Service Documentation page 197

012-223 (A-Finisher) Front Tamper Home Sensor OFF Fail
BSD-ON:CH15.4
• At the end of the operation to turn Off the Front Tamper Home Sensor that was On, the
Front Tamper Home Sensor was not detected being Off.
• The Front Tamper Home Sensor should have turned Off and then the Front Tamper Motor
stopped, but the Front Tamper Home Sensor was On.
Initial Actions
• Check the Front Tamper Home Sensor is properly installed and has no foreign object and
that the actuator is not broken.
• Power Off/ON.
Procedure
Check the Front Tamper for any foreign object, deformation and binding that prevents it from
moving. The Front Tamper free from defects and binding.
Y N
Repair the deformation and remove the foreign object(s) and the binding.
Check the drive mechanism to the Front Tamper for a deformed or broken part and not-seated
gears. The drive mechanism is free from defects and the gears seat properly.
Y N
Repair the Front Tamper drive mechanism.
Run DC330[012-220].
Enter Component Control [012-220]. Move the Front Tamper by hand to block and unblock the
Front Tamper Home Sensor. The display changes.
Y N
Check the connections of P/J8700 and P/J8724. P/J8700 and P/J8724 are securely
connected.
Y N
Connect P/J8700 and P/J8724 securely.
Check for an open or short circuit between J8700 and J8724. The
J8700 and J8724 are OK.
Y N
Repair the open or short circuit.
Measure the voltage between Finisher PWB J8700-6 (+) and GND (-). The voltage is
approx. +5VDC.
Y N
Go to Wirenet 7.2.36 A-Finisher +5VDC and check the +5VDC circuit.
Measure the voltage between Finisher PWB J8700-5 (+) and GND (-). Move the Front
Tamper by hand to block and unblock the Front Tamper Home Sensor. The
changes.
Y N
Replace the Front Tamper Home Sensor (PL 22.10).
A B
Status-indicator-raps
012-223 (A-Finisher)
A B
Check the wires and connectors for an intermittent open or short circuit. If the problem
continues, replace the Finisher PWB (PL 22.7).
Enter [012-020] and [012-023] alternately. The Front Tamper Motor rotates.
Y N
Check the connections of P/J8710, P/J8738A and P/J8738B. P/J8710, P/J8738A and
P/J8738B are securely connected.
Y N
Connect P/J8710, P/J8738A and P/J8738B securely.
Check for an open wire or short circuit between J8710, P/J8738A and J8738B. The wire
between J8710, P/J8738A and J8738B are OK.
Y N
Repair the open wire or short circuit.
Measure the voltage between Finisher PWB J8710-5 (+) and GND (-), and between
J8710-7 (+) and GND (-). Each voltage is approx. +24VDC.
Y N
Go to Wirenet 7.2.38 A-Finisher +24VDC and check the +24VDC circuit. If the prob-
lem continues, replace the Finisher PWB (PL 22.7).
Replace the Front Tamper Motor (PL 22.10). If the problem continues, replace the Fin-
isher PWB (PL 22.7).
Check the wires and connectors for an intermittent open or short circuit. If the problem contin-
ues, replace the Finisher PWB (PL 22.7).
wires between
voltage
January 2007
2-174
Revision
WorkCentre 7132