Sharp Z-810 Service Manual page 26

www.freeservicemanuals.info
3
After 0.15sec from when the main motor start rotating, the tray
paper feed solenoid (PFS) turns on at a moment.
This disengages the paper feed latch from the projection of the
clutch sleeve, transmitting rotation of the pick up drive gear to the
pick up roller shaft, rotating the pick up roller to feed the paper.
Tray paper feed solenoid
: Rotating section
Pick-up roller
4
After one rotation of the pick up roller, the paper feed latch is
brought in contact with the projection of the clutch sleeve, stop-
ping rotation of the pick up roller.
5
On the other hand, the paper fed is passed through the paper
entry detection switch (PPD1), the transport roller, and PPD2 to
the resist roller. Then the paper is temporarily stopped to make
synchronization with the lead edge of the image on the drum.
Since the transport roller keeps rotating at that time, the lead edge
of the paper is evenly pressed on the resist roller, preventing
against skew feeding.
PPD2 sensor
actuator
Resist
roller
Clutch sleeve
Paper
Paper feed latch
Clutch sleeve
projection
Paper feed
roller shaft
Pick-up roller
Clutch spring
drive gear
PPD2 sensor PWB
PPD1 sensor PWB
: Paper
Pick-up
PPD1 sensor
roller
actuator
Published in Heiloo, Holland.
6
To release the resist roller, the resist roller solenoid is turned on
by the paper start signal to disengage the resist start latch from
the clutch sleeve projection, transmitting rotation of the resist drive
gear to the resist roller shaft. Thus the paper is transported by the
resist roller.
7
After the resist roller starts rotating, the paper is passed through
the pre-transfer roller to the transfer section. Images are trans-
ferred on the paper, which is separated from the OPC drum by the
drum curve and the separation section.
Clutch sleeve Resist start latch
Resist roller
Resist roller
solenoid
Pre-transfer roller Resist roller
8
The paper separated from the drum is passed through the fusing
paper guide, the heat roller (fusing section), POD (paper out
detector) to the copy tray.
The figure below shows the time chart of the above operations.
PSW
MM
MIR
CL
C1PFS
150
RRC
PPD1
PPD2
POD
7 – 6
: Paper
1200
370
Resost amount
(400)
1/11/16