Dc Controller Input/Output Signals - Canon LBP-860 Service Manual

CHAPTER 2
D. DC Controller Input/Output Signals (l/2)
Laser/scanner
High-voltage
,ower supply
PCB
motor
Mm
0
Ml
2-4
,
,
unit
connecter PCB Flxmg unit
J131-1
~____
c5v
5206.1
,' "L" to switch the laser ON forcibly.
/LON _' "L" to watch the laser ON according to
/
the NDATA signal.
/ENBL
The laser switches ON when the /ENBL
N DATA ,"
signal and this signal are "L".
APCIN ~~ Avoltage proportional to the Intensity 01
APCCUT,
the laser beam IS input.
The analog signal is output to adjust
the intensity of the laser beam
;ir
27
/BDI BD input signal (pulse)
e5V
_t
Scanner motor reference clock signal
-24VA
f
'r to drive the scanner motor.
ISCNON
"L" when the scanner motor reaches the
ISCNRDY
prescribed speed
t24VB
4
f
+5v
_f
TVIN
High-voltage mon!tor signal
,
HVRST
High-voltage reset signal
I'NOUT Constant-voltage output signal
SLl2 INPUT SERIAL LINE 2
SLO2
OUTPUT SERIAL LINE 2
J211-1
"c' when the main motor runs
IMRDY
correctty.
"L" to drive the main motor.
IMON
I
-z
+24VB
2
Figure
2-4
DC controller