Canon PC921 Service Manual - Page 47
Inputs to and Outputs from the ADF, Composite power supply PCB, J114-1
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CHAPTER 2 BASIC OPERATION 5. Inputs to and Outputs from the ADF J60 -8 -7 -6 -5 To the ADF -4 -3 -2 -1 To the ADF J24 -4 -3 -2 -1 +24V +5V +5V +24V J202-1 -2 -3 -4 -5 -6 Composite power supply PCB J114-1 REQ -2 -3 ACK -4 -5 TXD -6 -7 RXD -8 J105-6 -5 -4 -3 -2 -1 DC controller PCB See Chapter 8. Figure 2-109 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 2-11
CHAPTER 2
BASIC OPERATION
COPYRIGHT
©
1999
CANON INC.
CANON
PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
2-11
5.
Inputs to and Outputs from the ADF
Figure 2-109
Composite power supply PCB
+24V
+5V
+5V
+24V
J114-1
-2
REQ
-3
-4
ACK
-5
-6
TXD
-7
-8
-8
-7
-6
-5
-4
-3
-2
-1
RXD
DC controller PCB
See Chapter 8.
To the ADF
-4
-3
-2
-1
To the ADF
J60
J105-6
-5
-4
-3
-2
-1
J202-1
-2
-3
-4
-5
-6
J24