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IWQ Series Service Manual
4.2.2 Main board P-932-
Parts side of the main board (indicator tubes and keys are mounted on the soldering side)
(1) Memory switch
•
Used for data rewriting at Test mode initialization
•
Used for data rewriting at country/span adjustment in Test mode.
(2) Connector XJ1
•
Directly mounted connector for connecting with I/F board P-934
PIN No.
Signal code
to P-934
PIN No.
Signal code
to P-934
1
IN1
1
6
NC
NC
2
OUT4
2
7
RESET
NC
3
OUT3
3
8
VPP
NC
4
OUT2
4
9
GND
NC
5
OUT1
5
10
VCC
10
(3) Connector XJ2
(NC: Non connection)
•
Directly mounted connector for connecting with AD board P-933
PIN No.
Signal code
to P-933
PIN No.
Signal code
to P-933
1
VCC
1
10
XIN
10
2
GND
2
11
ASWF2
11
3
VEX
3
12
ASWR2
12
4
CE
4
13
ASWF1
13
5
DRDY
5
14
ASWR1
14
6
SD0
6
15
NC
NC
7
SCLK
7
16
NC
NC
8
SD1
8
17
AIN+
NC
9
STANBY
9
18
AIN-
NC
(4) Connector XJ3
•
+5VDC input
PIN No.
Signal code
Wire color
to power supply
1
GND
Red
1
2
GND
Red
2
3
+5V
Red
3
4
+5V
Red
4
Memory switch
XJ2
XJ1
XJ4
XJ3
AD board
P-933
I/F board
P-934
P-932-
6 1
4 1
