Icom IC-7700 Service Manual page 84

SECTION 7 BOARD LAYOUTS
<FRONT UNIT>
• DISPLAY BOARD
(TOP VIEW)
• LED BOARD
(TOP VIEW)
7 - 1
• PBT BOARD • PITCH BOARD
(TOP VIEW) (TOP VIEW)
J1
R1
• TENKEY BOARD
(TOP VIEW)
S11 S15 S19
1.8(1) 3.5(2) 7(3)
S51
FILTER
S12 S16 S20
DS51
10(4) 14(5) 18(6)
S52
PBT CL
S13 S17 S21
21(7) 24(8) 28(9)
S14 S18 S22
GENE(.) 50(0) F-INP(ENT)
DS52
S53
DIGI-SEL
S1 S4 S6
DS53
UP MP-W MP-R
S54
S2 S5 S3 APF-TPF
DOWN MW V/M DS54
S55
NOTCH
S8 S23
S7
A/B A=B
XFC
S24
S56
RIT
TS
S57
d-TX
S58
RIT-CL
S59
SPEECH
S61 S60
LOCK SPLIT
• SW-A BOARD
(TOP VIEW)
DS5
DS6
S1
POWER
A
MP1 M P 1 M P 1
DS12 DS17 DS18
S11 S21 S22
S2 B
MONITOR
VOX BK-IN
TRANSMIT
DS15
DS16
C
S3
TUNER
D
DS7
S4
TIMER
E
F
G
• MIC BOARD • JACK BOARD
(TOP VIEW) (TOP VIEW)
J1
J1
L6 L5
J2
B6761B
JACK
L101 L102
• USB BOARD
(TOP VIEW)
DS8 DS9 DS10
S3 S2 S1
DS11
J107
J108
• VR-A BOARD • VR-B BOARD
(TOP VIEW) (TOP VIEW)
B6759B
VR-A
R1
J103
TO JACK J1
J103
J106
TO DISPLAY J604
R2
J107
TO MAIN J841
R108
EP121
EP120
EP122
R107
J104
• SW-B BOARD
(TOP VIEW)
S1 F-1 S2 F 2 - S3 F 3 - S4 F-4 S5
SSB
S8 S9 S10 S11 S12
CW T R Y T P / K S A / M M F
J1
L4
L103
J102
• VR-C BOARD
(TOP VIEW)
V0 V5 V10 V15 V20
F 5 - S6 F 6 - S7 F 7 -
DATA S13 S14
M.SCOPE EXIT/SET
AUTO TUNE
REC PLAY
S17
S 5 1 S 6 1