E1-40 Optics Fan Motor (1) Rotation; E1-41 Optics Fan Motor (2) Rotation; E1-43 Optics Fan Motor (4) Rotation; E2-01 Lift Motor Rotation 1 (Copier Upper Tray) - Panasonic FP-7742 Service Manual

E1-40: Optics fan motor (1) rotation
E1-41: Optics fan motor (2) rotation
E1-43: Optics fan motor (4) rotation
A lock signal is detected when the fan
motor is rotating.
Is DC24V, detected on CN 106-9, 12 or
CN 107-3 (on LVPS PCB)?
YES
Connector is shorted or broken, Harness is defective. Fan is defective.
A rotation signal is detected when the fan motor stops.
Is 0V CN106-9, 12 or CN107-3
(on LVPS PCB)?
YES
Fan is defective.
E2-01: Lift motor rotation 1 (Copier upper tray)
E2-02: Lift motor rotation 1 (Copier lower tray)
E2-03: Lift motor rotation 1 (System console upper)
E2-04: Lift motor rotation 1 (System console middle)
E2-05: Lift motor rotation 1 (System console lower)
When the lift motor is turned on, the level sensor is not turned ON within a predetermined time.
Does the lift motor lift the plate?
NO
Does LUMX-2* changed "H" to "L"
when the lift motor is turned ON?
NO
* NOTE: X=1: Lift motor signal (Copier upper tray)
X=2: Lift motor signal (Copier lower tray)
X=3: Lift motor signal (System console upper)
X=4: Lift motor signal (System console middle)
X=5: Lift motor signal (System console lower)
4-46
NO LVPS is defective.
NO LVPS is defective.
YES Check level sensor signal(CN-2) when
the plate rises.
Changed: CPU PCB defective.
Not changed:
Check sensor lever.
Check DC5V of CN-1.
Level sensor is defective.
YES Lift motor drive mechanism is defective.
Lift motor is defective.
Driver PCB is defective.
Copier CPU PCB is defective.