Icom IC-7800 Service Manual page 148

The transcever
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8-17 MEMORY BOARD
• TOP VIEW
40
35
30
J2
1
+3R3V
+3R3V
40
CE01
+3R3V
25
CE00
CE11
CE02
CE10
CE21
CE12
CE20
CE31
CE22
CE30
VPEN
CE32
RP#
WE#
OE#
STS
20
D15
D7
D14
D6
D13
D5
D12
D4
D11
D3
D10
D2
D9
D1
15
D8
D0
GND
BYTE#
20
GND
GND
21
to the LOGIC unit J2
10
5
0
0
5
28
29
10
15
20
25
8 - 11
1
28
56
29
30
35
40
45
Horizontal
1
56
50
55
60
J1
1
+3R3V
+3R3V
30
+3R3V
A22
A21
A20
A19
A18
A17
A16
A15
A14
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
A23
GND
15
GND
GND
16
to the LOGIC unit J1
65

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