5–10
TROUBLESHOOTING FEEDING FAULTS
6
The lifter fails to rise (paper deck).
Cause
Deck
Lifter cable
Spring,
Lever
Pedestal
motor
Pedestal
controller
PCB
Pedestal
motor
Deck open
sensor
(PS6)
Deck lifter
drive clutch
(CL4)
Pedestal
controller
PCB
Step
1
2
3
4
5
6
7
Checks
Is the deck properly set?
Is the lifter cable properly attached?
Push up the pick-up roller release
lever by a finger. Does the pick-up
roller lower?
Does the pedestal motor rotate?
Set the meter to the 50VDC range.
Does the voltage between J202-2 (+)
and J202-4 (–) on the pedestal
controller PCB change to +34V when
the deck is slid in and then to 0V?
Set the meter to the 12VDC range.
Does the voltage between J113-10 (+)
and J113-8 (–) on the pedestal
controller change as follows?
0V when the deck is opened; and
5V when the deck is closed.
Set the meter to the 30VDC range.
Does the voltage between J114-4 (+)
and J114-5 (–) on the pedestal
controller PCB change to 24V when
the deck is slid in and then to 10V?
Yes/No
NO
NO
NO
YES
NO
YES
NO
YES
NO
Remedy
Set the deck properly.
Attach the cable properly.
Detach the pick-up assem-
bly, and check the spring and
lever.
Go to step 6.
Replace the pedestal control-
ler PCB.
Check the wiring up to the
pedestal motor; if normal,
replace the pedestal motor.
Check the lever and wiring; if
normal, replace the sensor.
Check the wiring up to the
deck lifter drive clutch; if
normal, replace the clutch.
Replace the pedestal control-
ler PCB.
Summary of Contents for NP6621
Page 4: ...ii ...
Page 8: ...vi ...
Page 48: ...3 2 IMAGE FAULTS ...
Page 49: ...3 3 IMAGE FAULTS NOT USED ...
Page 50: ...3 4 IMAGE FAULTS B Image Fault Samples not available ...
Page 80: ...4 16 TROUBLESHOOTING MALFUNCTIONS ...
Page 134: ...A 4 APPENDIX ...
Page 135: ...A 5 APPENDIX C GENERAL CIRCUIT DIAGRAM not available ...
Page 136: ...A 6 APPENDIX ...
Page 144: ...A 14 APPENDIX ...