E050; E051 - Canon NP6251 Service Manual

CHAPTER 11 TROUBLESHOOTING

15. E050

Cause Step
Holding tray X 1
home position
sensor (PS21)
Holding tray X 2
motor (M8)
Holding tray 3
driver PCB
DC controller
PCB

16. E051

Cause Step
Holding tray Y 1
home position
sensor (PS20)
Holding tray Y 2
motor (M9)
Holding tray 3
driver PCB
DC controller
PCB
11-94
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Checks
Is the holding tray X home
position sensor (PS21) normal?
Disconnect J209 from the holding
tray driver PCB. Is there electrical
continuity between the following
pins on the motor side?
J209-1 and -2
J209-5 and -6
Replace the holding tray driver
PCB. Is the problem corrected?
Checks
Is the holding tray Y home
position sensor (PS20) normal?
Disconnect J208 from the holding
tray driver PCB. Is there electrical
continuity between the following
pins on the motor side?
J208-4 and -5
J208-8 and -9
Replace the holding tray driver
PCB. Is the problem corrected?
CANON NP6350/NP6251 REV. 0 JULY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
YES/NO Action
NO Replace the sensor
(PS21).
NO Replace the holding tray
X motor (M8).
YES End.
NO Replace the DC
controller PCB.
YES/NO Action
NO Replace the sensor
(PS20).
NO Replace the holding tray
Y motor (M9).
YES End.
NO Replace the DC
controller PCB.