Sharp AR-5012 Service Manual page 30

2) When the PRINT button is pressed, the manual paper feed
solenoid (MPFS) turns on to disengage the manual paper feed
latch.
A from the manual paper feed clutch sleeve A, rotating the manual
paper feed roller and the manual take-up roller. At the same time,
the manual paper feed stopper opens and the manual take-up
roller is pressed to the surface of the paper to start paper feeding.
ON
MPFS
3) When pawl C of the manual paper feed clutch sleeve is engaged
with the manual feed latch, the manual feed stopper falls and the
manual take-up roller rises. At that time, the manual paper feed
roller is rotating.
ON
MPFS
C
A
A
C
AR-5012 OPERATIONAL DESCRIPTIONS 7 - 6
4) The lead edge of the transported paper is pressed on the resist
roller by the transport roller. Then the paper is stopped temporarily
to allow synchronization with the lead edge of the image on the
OPC drum.
From this point, the operation is the same as the paper feed
operation from the tray. (Refer to A-5 - 8.)
5) The solenoid turns off to close the gate and return to the initial
state.
OF F
MPFS
(3) Conditions of occurrence of paper misfeed
a. When the power is turned on:
PPD or POD is ON when the power is turned on.
b. Copy operation
a PPD1 jam PPD1 does not turn off within 4 sec after turning
on the resist roller.
b PPD2 jam PPD2 is off immediately after turning on the
resist roller.
PPD2 does not turn off within 1.2 sec after
turning off the resist roller.
c POD jam POD does not turn on within 2.9 sec after turning
on the resist roller.
POD does not turn off within 1.5 sec - 2.7 sec
after turning off PPD2.
A
C