- HP Printer User Manual

ENWW Conveyance section 33
Finisher unit explanation
3 M707 F/R (finisher CB to M707)
Signal to control the rotation direction
of M707
[L]: CCW
[H]: CW
SD704 (paper exit opening
solenoid) control
SD704 (paper exit opening) drives the nip
moving section. This solenoid allows the nip
paper exit roller to firmly contact the main
tray paper exit roller for nipping the paper.
The finisher CB (finisher control board)
controls the operation of SD704.
The related signals are PS704 (finisher
entrance) and PS706 (main tray paper exit).
1 Operation
a SD704 on
1 Straight, sort, and group modes:
When PS704 (finisher entrance) has
detected the rear end of the paper,
and a predefined time period has
elapsed, SD704 is activated (on).
2 Staple mode:
When the stapling operation has been
completed and a predefined time
period has elapsed, SD704 is
activated (on) for nipping the paper.
b SD704 OFF
In each mode, when PS706 (main tray
paper exit) has detected the paper and
a predefined time period has elapsed,
SD704 is deactivated (off).
2 Signals
a Finisher CB output signals
1 SD704 DRV (finisher CB to SD704)
Signal to drive/control SD704
[L]: SD704 on
[H]: SD704 off
M708 (paper exit opening) control
In the staple (when the length of the paper in
the feeding direction is larger than B5R),
booklet, or tri-folding mode, M708 (paper
exit opening) drives the open/close
operation of the paper exit opening through
the link mechanism.
The finisher CB (finisher control board)
controls the operation of M708.
The related signals are PS712 (paper exit
opening HP), PS725 (folding exit), and
PS729 (folding full PS).
5V
PS704 IN
GND
PS704
5V
PS706 IN
GND
PS706
FNS CBMAIN BODY
24V
SD704 DRV
SD704
24V
SD708 DRV
5V
PS712 IN
GND
5V
PS729 IN
GND
PS712
PS725
5V
PS729 IN
GND
5V
GND
PS729
LED729
FNS CB
MAIN BODY
M708