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Manual No. 0158A
40/68
IWB
−
IWX Series (Overseas Use) Service Manual
Item 2. Main Board P-936
Parts side of the main board (indicator tubes and tactile keys are mounted on the soldering side)
XJ1
XJ2
AD board
P-933A
I/F board
P-934
(Contact BOX)
XJ3
XJ5
XJ4
SW1
Memory
Switch
Battery BOX
connector
RS232C
AC adaptor
2
1
1
1
2
2
1
4
6
17
1
18
10
9
(1) SW1 Memory Switch
Used for data re-writing at Test Mode initialization
Used for storing the data in E2ROM (data rewriting) after changing country No., scale No. and
span adjustment in Test Mode.
(2) Connector XJ1
Connector for connecting with I/F board P-934
PIN No.
Signal
code
P-934
XJ3
PIN No.
Signal
code
P-934
XJ3
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)
Connector for connecting with AD board P-933
PIN No.
Signal
code
P-933
XJ1
PIN No.
Signal
code
P-933
XJ1
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