Canon LBP-860 Service Manual page 179

M - 7
Possible rnusr
Delivery
paper sensor
DC rontrollw
5
Pick-up motor
sensor
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Is the regist paper sensor arm or
When the delivery papel- sensor arm
is moved, does the voltage between
change from zero to about 5 VDC?
the regist paper sensor arm is
moved. does the voltage between
connectors J605-6 (RESS) and
driver PCB change from about 5 VDC
to zero?
CHAPTER 6
has not
paper sensor arm is
damaged. If it is
it: if it is not, replace the
regist paper sensor.
Check whether the delivery
paper sensor arm is
damaged. If it is, replace it:
if It Is not, replace the
delivery paper sensor.
NO
Replace the pick-up motor
driver PCB. If the
problem persists, replace
the DC controller PCB.
Y E S Replace the damaged paper
sensor arm.
NO
Replace the delivery paper
sensor.
Y E S Replace the pick-up motor
driver PCB. If the problem
persists after replacing the
PCB. replace the DC
controller PCB.
NO Replace the regist paper
replace
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