- HP Printer User Manual

ENWW Folding/Tri-folding section (Q3634A only) 59
Finisher unit explanation
M720 (folding conveyance) control
M720 (folding conveyance) operates the
folding roller(s), which rotates the tri-folding
roller.
The finisher CB (finisher control board)
controls the operation of M720.
The related signals are PS722 (folding knife
HP), PS725 (folding paper exit), and PS726
(folding passage).
1 Operation
PS726 (folding passage) detects the
paper and the booklet stopper stops at the
folding position. After a predefined time
period has elapsed since then, M719
(folding knife) is activated. When PS722
(folding knife HP) detects the paper, M720
(folding conveyance) is activated to fold
the paper with the folding roller(s) and the
tri-folding roller. The folded paper is
delivered to the booklet tray.
When PS725 (folding paper exit) has
detected the trailing edge of the paper and
a predefined time period has elapsed
since then, M720 stops.
2 Signals
a Finisher CB input signals
1 M720 PLL (M720 to RB to finisher
CB)
Signal for monitoring the rotation of
M720
[L]: M720 is rotating at a specified
speed.
[H]: M720 is not rotating at a specified
speed.
b Finisher CB output signals
1 M720 BLK (finisher CB to RB to
M720)
Signal to apply braking to the M720
[L]: Braking on
[H]: Braking off
2 M720 CONT (finisher CB to RB to
M720)
Signal to drive/control M720
[L]: M720 on
[H]: M720 off
M720 BLK
M720 CONT
M720 CLK
M720 PLL
M720 F/R
24V
24V
PGND
PGND
SGND
5V
PS722 IN
GND
PS722
5V
PS725 IN
GND
PS725
5V
PS726 IN
GND
PS726
RB
M720 BLK
M720 CONT
M720 CLK
M720 PLL
M720 F/R
24V
PS726 IN
PS725 IN
PS722 IN
FNS CBMAIN BODY
M720