- HP Printer User Manual

Table Of Contents
ENWW Scanner section 47
MFP unit explanation
1 Operation with AE
2 Operation without AE
2 Signals
a Input signals
1 SIG/SCANHP_PS (PS61 to SCDB to
PRCB)
Scanner home position detection
signal
The reference position of the home
position of the exposure unit is
detected.
[L]: The exposure unit is detected.
[H]: The exposure unit is not
detected.
b PRCB output signal
1 SCAN_CLK (PRCB to SCDB)
M11 (scanner) clock signal
2 SCAN_F/R (PRCB to SCDB)
M11 (scanner) rotational direction
switchover signal
[L]: The exposure unit is moved
toward the paper exit side.
[H]: The exposure unit is moved
toward the paper feed side.
3 MODE1 to 3 (PRCB to SCDB)
M11 (scanner) energize switchover
signals
4 SCAN_CUR1 to 3 (PRCB to SCDB)
M11 (scanner) energize current
switchover signals
c SCDB output signals
1 U, V, W (SCDB to M11)
M11 (scanner) drive control signals
These signals are used to control
rotation of M11 (scanner). By
supplying and stopping clock pulses,
the motor is turned on/off and the
rotational direction is switched.
PS61
Home position search
First white correction
Second
white correction
Platen APS
read position
AE scanning
Exposure scanning
PS61
Home position search
First white correction
Second
white correction
Platen APS
read position
Exposure scanning