Canon FAX L1000 Service Manual page 343

SCNT board (J25) ,/ NCU board (J6)
J25 J6
.
1 14
/
2 13
/
3 12
.
4 11
/
5 10
,
6 9
,
7 8
,
8 7
,
9 6
,
10 5
,
11 4
,
12 3
,
13 2
,
14 1
NCU board (J4) ,/ Power Supply unit (CN22)
J4 CN22
,
1 2
.
2 1
NCU board (J5) ,/ to Grounding wire
J5 G.wire
. .
1
NCU board (J7) ,/ Modular board (J3)
J7 J3
.
1 6
.
2 5
.
3 4
.
4 3
.
5 2
.
6 1
FAX-L1000 Chapter 4: Maintenance and Service
Signal name Description
OUT Direct current of line detection signal
IPSEL1 HIC terminal impedance setting
IPSEL2 HIC terminal impedance setting
IPSEL3 HIC terminal impedance setting
DCSEL DC registance switching when line is
connected
DCLIM DC current limitation control signal
RRD R relay control signal
NOR CI reception sensitivity setting signal when
no ringing reception
C1 DC cut capacitor selection signal
C2 DC cut capacitor selection signal
CIST1 CI reception sensitivity setting signal
CIST2 CI reception sensitivity setting signal
AST For Australian regulations signal
NZ For N.Z. regulations signal
Signal name Description
VH For off-hook detection during communication
VH-GND Ground
Signal name Description
ARG Ground (arrester)
Signal name Description
T2 Line from L1, L2 to wall socket via the fax
W Line from handset terminal T11 in priority
mode (handset/extension telephone).
L2 Telephone line
L1 Telephone line
R Outside line access signal
T1 Line from L1, L2 to wall socket via the fax
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