Canon NP6621 Service Manual page 68

OPERATIONS AND TIMING
5. Outputs from the DC Controller PCB (5/5)
Scanner cooling fan
(FM2)
Heat exhaust fan
(FM1)
Feeding fan
(FM4)
Power supply
cooling fan
(FM3)
Pre-exposure
lamp
Total copy counter
Control Card N
Remote
Diagnostic
Device II
3–12
+24V
J12-4
Composite power
-3
PSCFD
supply PCB
-2
J 401
- 1
- 2
Figure 3-112
COPYRIGHT © 1998 CANON INC.
DC controller PCB
+24V
J 310A- 4
When '0', the Scanner cooling fan turns ON.
- 5
(Scanner cooling fan rotates)
FM2D
+24V
J 315B- 2
When '0', the heat exhaust fan turns ON.
- 1
(heat exhaust fan rotates)
HEFD*
+24V
J 314A- 7
When '0', the feeding fan turns ON.
- 8
(feeding fan rotates)
FDFD*
J307
When '1', the power supply cooling fan turns ON.
+24V
J 315A
- 10
When '0', the pre-exposure lamp
turns ON.
- 9
PEXP*
+24V
J 315B
- 9
When changes from '0' to '0', the
count is incremented.
- 8
TCNTD*
+5V
J 306A- 11
- 13
CCD* When '0', the count is incremented.
- 12
When '0', the control card is present.
CCDT*
- 10
5V
J 311A- 7
- 8
- 6
When '0', a copy is counted.
AST-CNTP*
- 5
Transmission data (IPC communication)
AST-TXD
- 4
Reception data (IPC communication)
AST-RXD
24V
- 2
- 3
CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)