COPYRIGHT © 2001 CANON INC.
2000 2000 2000 2000
CANON SUPER G3 FAX BOARD-J1 REV.0 JUNE 2001
CHAPTER 2 BASIC OPERATION
2-8
G3 fax control PCB (J104)
¬ ®
Composite power supply PCB (J124), Off-hook de-
tection PCB (J715)
J104
J124/J715signal
Description
1
-
GND4
not used
2
-
+12V
not used
3
1(J124) GND0
3.3V digital ground
4
2(J124) GND0
3.3V digital ground
5
3(J124) +3.3V
3.3V power supply (at time of ESS, OFF)
6
4(J124) +3.3V
3.3V power supply (at time of ESS, OFF)
7
5(J124) GND3
3.3VS digital ground
8
6(J124) +3.3VS
ESS 3.3V all-time drive power supply
9
7(J124) GND2
5V digital ground
10
8(J124) GND2
5V digital ground
11
9(J124) +5V
5V power supply (at time of ESS, OFF)
12
10(J124) +5V
5V power supply (at time of ESS, OFF)
13
1(J715) +5VS
ESS 5V all-time drive power supply
14
1(J715) GND1
5VS analog ground
G3 fax control PCB (J105)
¬ ®
Relay connector to speaker
J105
SPK
signal
Description
1
1
SPKR1
Speaker output
2
2
SPKR2
Speaker output
NCU PCB (J3)
¬ ®
Modular PCB (J911)
J3
J911
signal
Description
7
1
T1
not used
6
2
T2
not used
5
3
NC
not used
4
4
L1
telephone line connection
3
5
L2
telephone line connection
2
-
-
not used
1
-
-
not used
NCU PCB (J4)
¬ ®
Off-hook detection PCB (J714)
J4
J714
signal
Description
1
1
VH
off-hook detection power supply
2
2
OVH
ground
Содержание Super G3 Fax Board-J1
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