![background image](http://html.mh-extra.com/html/icom/ic-756pro-iii/ic-756pro-iii_service-manual_612292073.webp)
8 - 2
• MODE BOARD
(BOTTOM VIEW)
• PHONE BOARD
(BOTTOM VIEW)
• KEY BOARD
(BOTTOM VIEW)
• TEN-KEY BOARD
(BOTTOM VIEW)
• PREAMP BOARD
(BOTTOM VIEW)
• BPF-A BOARD
(BOTTOM VIEW)
• DSP-A BOARD
(BOTTOM VIEW)
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
105
110
115
120
125
130
135
140
145
0
Hor
iz
ontal
5
10
15
0
25
30
35
20
45
50
55
40
65
70
75
60
80
90
95
100
85
105
110
Vertical
5
10
15
20
0
Horizontal
5
10
15
0
25
30
35
20
Ve
rtical
5
10
15
0
Horizontal
5
10
15
0
25
30
20
Ve
rtical
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
105
0
Hor
iz
ontal
5
10
15
0
25
30
35
20
45
50
55
40
65
70
75
60
80
90
95
100
85
105
110
Vertical
GND
1
2
15
16
to DISPLA
Y
board J201
J1
5VF
KI2
CWK
FILK
SPEK
F2K
F4K
GND
KI1
SSBK
AMK
EXTK
F1K
F3K
F5K
SPLK
1
2
15
16
to DISPLA
Y
board J221
J1
3K
10K
18K
24K
50K
FINK
MPRK
1K
7K
14K
21K
28K
GENK
MPWK
GND
to DISPLA
Y
board J241
J2
MUPK
1
2
23
24
MWK
TSK
LOCK
NO
TK
5VF
LD
V
TXD
NO
TD
GND
GND
MDNK
MCLK
XFCK
PBTK
KI4
KI3
LOCD
RXD
PBTD
GND
GND
GND
GND
C3201
2
0
2
3
C
C3203
C3204
C3205
C3206
C3207
C3208
C3209
0
1
2
3
C
1
1
2
3
C
C3212
C3213
C3214
C3215
C3216
C3301
C3302
C3303
C3304
C3305
6
0
3
3
C
7
0
3
3
C
C3308
C3309
0
1
3
3
C
1
1
3
3
C
C3312
C3313
4
1
3
3
C
C3315
6
1
3
3
C
C3401
C3402
C3403
C3404
C3405
6
0
4
3
C
7
0
4
3
C
C3408
C3409
0
1
4
3
C
1
1
4
3
C
C3412
C3413
4
1
4
3
C
C3415
6
1
4
3
C
1
0
5
3
C
2
0
5
3
C
3
0
5
3
C
C3504
C3505
C3506
C3507
C3508
C3509
0
1
5
3
C
1
1
5
3
C
C3512
C3513
C3514
C3515
C3516
C3601
C3602
C3603
C3604
C3605
6
0
6
3
C
7
0
6
3
C
C3608
C3609
0
1
6
3
C
1
1
6
3
C
C3612
C3613
4
1
6
3
C
C3615
6
1
6
3
C
D3201
D3202
D3301
2
0
3
3
D
D3401
D3402
1
0
5
3
D
2
0
5
3
D
D3601
D3602
R3201
2
0
2
3
R
1
0
3
3
R
2
0
3
3
R
2
0
4
3
R
1
0
4
3
R
1
0
5
3
R
2
0
5
3
R
R3601
2
0
6
3
R
H0
H5
H10
H15
H20
H25
H30
H35
H40
H45
H50
H55
0
V
5
V
0
1
V
5
1
V
0
2
V
5
2
V
0
3
V
5
3
V
0
4
V
5
4
V
0
5
V
5
5
V
C4205
1
1
2
4
C
C4212
6
1
4
C
3
2
2
4
C
L4209
R4209
R4210
R4308
H0
H5
H10
H15
H20
H25
H30
H35
H40
H45
H50
H55
0
V
5
V
0
1
V
5
1
V
0
2
V
5
2
V
0
3
V
5
3
V
2
J2001
J2002
A
B-5704C
H0
H5
H10
H15
H20
H25
H30
H35
H40
H45
H50
H55
H60
H65
H70
H75
H80
0
V
5
V
0
1
V
5
1
V
0
2
V
5
2
V
0
3
V
5
3
V
0
4
V
5
4
V
0
5
V
5
5
V
0
6
V
5
6
V
0
7
V
5
7
V
0
8
V
5
8
V
0
9
V
5
9
V
0
0
1
V
5
0
1
V
0
1
1
V
5
1
1
V
0
2
1
V
5
2
1
V
756PROIII A3format.indd 14-15
2007/06/04 16:25:20