Canon FAX-L1000 User Manual
Page 416
5-58
FAX-L1000 Chapter 5: Appendix
3.1.4 Maintenance and service
a) Troubleshooting
The fax does not recognize the DRAM boards even when the test mode D-
RAM test is executed.
Solutions:
(1) Check that the DRAM boards are securely connected.
(2) Replace the DRAM board.
(3) Replace the SCNT board.
b) Signal description
SCNT board (J1)
,/
,/
,/
,/
,/
Memory board
J1
Memory Signal name
Description
A1
.
1
DGND
Ground
A2
.
2
VD0
Data signal
A3
.
3
VD1
Data signal
A4
.
4
VD2
Data signal
A5
.
5
VD3
Data signal
A6
.
6
VD4
Data signal
A7
.
7
VD5
Data signal
A8
.
8
VD6
Data signal
A9
.
9
VD7
Data signal
A10 /
10
+VB
Logic drive voltage
A11 .
11
N.C
Not connected
A12 .
12
AX0
Address/data signal
A13 .
13
AX1
Address/data signal
A14 .
14
AX2
Address/data signal
A15 .
15
AX3
Address/data signal
A16 .
16
AX4
Address/data signal
A17 .
17
AX5
Address/data signal
A18 .
18
AX6
Address/data signal
A19 .
19
AX10
Address/data signal
A20 .
20
N.C
Not connected
A21 /
21
VD8
Data signal
A22 .
22
VD9
Data signal
A23 .
23
VD10
Data signal
A24 .
24
VD11
Data signal
A25 .
25
VD12
Data signal
A26 .
26
VD13
Data signal
A27 .
27
VD14
Data signal
A28 .
28
AX7
Address/data signal
A29 .
29
N.C
Not connected
A30 /
30
+VB
Logic drive voltage
A31 .
31
AX8
Address/data signal
A32 .
32
AX9
Address/data signal