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Printer detects a jam and stops even though a paper jam has not
M - 7
OCClUTCd
Regist paper
sensor
Sensor arm
Delivery
paper sensor
I
Pick-up motor
driver PCB
DC ~ontrollcr
PCB
5
'
Dclivrty
6
paprr smsor
t
P i c k - u p "lotor 7
driver PCB
DC rontroller
Conrwrt Ihe printer driver tester to
the printer. Is the REGIST SENSOR
LED of the tester ON'?
Is the DELIVERY SENSOR LED of the
tesier ON?
Is the rcgist paper sensor arm or
delivery paper sensor arm damaged?
When the regist paper sensor arm is
moved, does the voltage between
connectors J605-6 CRESS) and
J605-5 IGND) on the pick-up motor
driver PCB change from about 5 VDC
to zero?
paper sensor arm is
damaged. If it is
it; if it is not. replace the
regist paper sensor.
--.!I
Check whether the delivery
Y E S
paper sensor arm is
damaged. If it is, replace it:
if it is not, replace the
delivery paper sensor.
Replace the pick-up motor
driver PCB. If the
problem persists, replace
the DC controller PCB.
Replace the damaged paper
sensor arm.
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
sensor.
CItApTER 6
,
replace
6-31
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