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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.
Содержание NP6621
Страница 4: ...ii ...
Страница 8: ...vi ...
Страница 48: ...3 2 IMAGE FAULTS ...
Страница 49: ...3 3 IMAGE FAULTS NOT USED ...
Страница 50: ...3 4 IMAGE FAULTS B Image Fault Samples not available ...
Страница 80: ...4 16 TROUBLESHOOTING MALFUNCTIONS ...
Страница 98: ...6 8 ARRANGEMENT AND FUNCTIONS OF THE ELECTRICAL PARTS D PCBs Figure 6 603 1 2 3 4 5 6 7 8 9 10 11 12 ...
Страница 108: ...6 18 ARRANGEMENT AND FUNCTIONS OF THE ELECTRICAL PARTS 4 Fixing Heater Driver PCB Figure 6 611 J402 1 J401 W1 W2 ...
Страница 134: ...A 4 APPENDIX ...
Страница 135: ...A 5 APPENDIX C GENERAL CIRCUIT DIAGRAM not available ...
Страница 136: ...A 6 APPENDIX ...
Страница 144: ...A 14 APPENDIX ...