Panasonic DP-C321 Service Handbook page 149

012-242 STAPLE MOVE SENSOR OFF FAILURE
Description In either one of the following cases:
• The STAPLE MOVE SENSOR did not turn Off within
500 ms after the move to the STAPLE POSITION has
started.
• The STAPLE MOVE SENSOR turned Off after STAPLE
POSITION has been fixed.
• The STAPLE MOVE SENSOR did not turn Off within
500ms after it has turned On when paper passed through
the 1st position of the DUAL STAPLE at moving to the
REAR STAPLE position.
Though it is possible to run the following Diag on
the machine not installed with the Finisher, an error
will be displayed.
BSD on : CH11.7 CH11.11B
Procedure
Open the FINISHER FRONT COVER. Turn the STAPLE
HEAD ASSEMBLY manually.
Does the STAPLE HEAD move smoothly without any load?
Y N
Remove the cause of STAPLE HEAD not moving, such as
rail breakage, drag, and gnawed gear.
Cheat the FRONT COVER INTERLOCK SWITCH.
Enter and run DC330 [012-224].
Turn On/Off the STAPLE MOVE SENSOR with paper, etc.
Is the display switched between H and L?
Y N
Repair the STAPLE MOVE SENSOR using the Generic
Permeable Sensor Failure FIP.
Execute DC330 [012-081] (FRONT direction) or DC330 [012-
083] (REAR direction).
Was the STAPLE MOVE MOTOR activated?
Y N
Is +24 VDC measured between the FINISHER PWB J847-
3 (+) and GND (-)?
3-75
Y N
Is +24 VDC measured between the FINISHER PWB
J844-4 (+) and GND (-)?
Y N
Check the INTLK ON +24 VDC circuit to the
FINISHER PWB J844-4 by referring to the BSD
CH11.1.
Replace the FINISHER PWB. (PL15.13)
Check the wire between the FINISHER PWB J847 and the
STAPLER MOVE MOTOR J888 for an open circuit or
poor contact. If no problems are found, replace the
STAPLER MOVE MOTOR (PL15.9) and the FINISHER
PWB (PL15.13) in sequence.
Replace the FINISHER PWB. (PL15.13)
012-244 STAPLE FAILURE
Description The STAPLE HEAD HOME SENSOR never turn
On within 200 ms after the STAPLER MOTOR started to
revolve backward (open).
Though it is possible to run the following Diag on
the machine not installed with the Finisher, an error
will be displayed.
BSD on : CH11.8 CH11.11B
Procedure
Run the DC330 [012-207].
Turn the STAPLE HEAD HOME SENSOR On/Off using paper,
etc.
Is the display switched between H and L?
Y N
Is +5 VDC measured between the STAPLE HEAD ASSY
J886-5 (+) and GND (-)?
Y N
Is +5 VDC measured between the FINISHER PWB
J852-1 (+) and GND (-)?
Y N
Is +24 VDC measured between the FINISHER
PWB J844-2 (+) and GND (-)?
Y N
Check the +24 VDC circuit to the
FINISHER PWB J844-2 by referring to the
BSD CH11.1.
Replace the FINISHER PWB. (PL15.13)
Check the wire between the FINISHER PWB J852-1
and the STAPLE HEAD ASSY J886-5 for an open
circuit or poor contact.
Turn the STAPLE MOTOR GEAR manually in order not
to interrupt the SENSOR.
Is +5 VDC measured between the FINISHER PWB J852-2
(+) and GND (-)?
Y N
Turn Off the power.
Pull out the J852 on the FINISHER PWB.
Turn On the power.
Is +5 VDC measured between the FINISHER PWB
J852-2 (+) and GND (-)?
Y N
Replace the FINISHER PWB. (PL15.13)
Check the circuit between the J852-2 and the
STAPLE HEAD ASSY J886-4 for short circuit.
Block the sensor.
Is 0 VDC measured between the FINISHER PWB J852-2
(+) and GND (-)?
Y N
Is 0 VDC measured between the STAPLE HEAD
ASSY J886-4 (+) and GND (-)?
Y N
Replace the STAPLE HEAD ASSY. (PL15.9)
Chapter 3 Troubleshooting