Canon CLBR 460ps Service Manual page 69

DC Controller Input/Output Signals (5/7)
Laser/scanner unit
J1101
-24/-25
-1
-23
-22
-18
-17
-15
Laser
-2/-3/-5/-6/
driver
-8/-9/-1 1/-12
PCB
-1/-4/-7/-10/
-13/-16/-19/-21
J1102
-2
-1/-3
J551
-3
-2
BD PCB
-1
J1103
-4
-3
Scanner
-1
motor
-2
Front door switch
SW4
J3
24VB
-1
-2
-3
Power
-5
supply
-4
J2-2
J501
-15
-1
-13
Toner
-5/-6/-7/-8/-9/-10/-1
density
-4
sensor
-3
PS14
-2
-14
J1007
-1/-2
-3
-4
-8
-9
-11
-12
-14/-15/-17/-18/
-20/-21/-23/-24
-5/-7/-10/-13/
-16/-19/-22/-26
J1008
-2
-1/-3
J1006
-1
-2
-3
-4
-5
-7
-6
Rear door switch
SW5
24VA
J1013-1
-2
-3
-5
-4
J1012-12
J1010
-1
-15
-3
1/-12
-4/-5/-6/-7/-8/-9/-10/-1
-12
-13
-14
-2
Figure 2-2-7
DC controller PCB
LASER5V
/LSENB
"L" to permit image formation.
Laser current monitoring signal.
ILM
LON "H" to emit laser compulsively.
"L" to reset pulse width.
/HD
"H" to emit black dot compulsively.
BK
WHT "H" to emit white dot compulsively.
VOUT 0Å'7
Video signal
See Page 2-37 for details.
Printer clock signal
PCLK
+5V
/BDIN BD input signal
+5V
"L" to accelerate scanner motor rotation.
/ACC
/DEC "L" to decelerate scanner motor rotation.
See Page 2-42 for details.
24VA 24V when the ITB unit drawer, drum
cartridge drawer, toner cartridge door,
and delivery door are closed.
0V when any of the drawer or door is
24VB
open.
+5V
VLEVEL Controller type detection signal
+24VA
+5V
/DENB LED drive signal
1
/D0Å'7 LED intensity signal
DLSHIFT Toner density detection setting signal
/DENSEL Toner density detection switching signal
DNS Toner density detection signal
See Page 2-74 for details.
CHAPTER 2
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