Canon LBP-860 Service Manual page 182

P i c k - u p nwtor 2
DC controller
Faulty Envelope Feeder Pick-up Motor
driver PCB
DC controller
PCB
Envelope
3
feeder pick-up
motor
Envelope
f e e d e r d r i v e r
PCB
Note:
Before checking the envelope feeder operation, be sure to hold the bottom of the PCB up
or lape il to the frame if the right cover is removed.
Download Service Manual and Resetter Printer at http://printer1.blogspot.com
Check
paper frrdrr is replaced?
and prrlbmm a test print by using the
printer drivrr tester. After the
prescribed time. do the voltages
PCB change from about 24 VDC to
about 15 VDC?
l
Check
Are Ihe connectors (J601, 5604. 5136,
controller PCB Lo connertor 5932 on
the envelope feeder driver PCB making
Does the problem improve when the
envelope feeder is replaced7
Place some envelopes on the envelope
feeder and perform a test print by
using thr printer driver tester. After
the prescribed time, do the voltages
between the following pairs of
terminals on the envelope feeder driver
PCB rhange from about 24 VDC to
about 15 VDC7
l
l
Procedure
driver PCB. If the problem
persists after replacing the
PCB, replace the DC
controller PCB.
Procedure
N O IR econnect the connectors.
NO
Replace the pick-up motor
driver PCB. If the problem
persists after replacing the
PCB, replace the DC
controller PCB.
Replace the envelope feeder
pick-up motor.
N O
Replace the envelope feeder
driver PCB.