Icom IC-7851 Servise Manual page 114

• TENKEY UNIT B-8104C
(TOP VIEW)
S11 S15
3.5(2)
1.8(1)
S12 S16
10(4) 14(5)
S13 S17
21(7) 24(8)
S14 S18
50(0)
GENT(.)
S1 S3
UP
V/M
S2 S4
DOWN
MP-W
D 3 S
D 1 S
S8
MAIN
S7
XFC
S9
M=S
• LED UNIT B-8107B
(TOP VIEW)
MAIN
[SPLIT]
[TX] [LOCK]
[RX]
D 1 S D 2 S D 3 S DS4
6-9
S19
7(3)
S20
18(6)
S21
28(9)
S22
F-INP(ENT)
S5
MW
S6
MP-R
D 4 S
D 2 S
S23
SUB
S24
CHANGE
SUB
[TX] [RX]
[LOCK]
D 5 S 6 S D D 7 S
B-8107B LED
TO DISPLAY J11
J1
J1
• PBT1 UNIT B-8105A
(TOP VIEW)
MAIN VR
[DIGI-SEL NOTCH]
PBT1
C2
B-8105A
C1
J1
R1
J1
TO TENKEY J4
• PBT2 UNIT B-8106B
(TOP VIEW)
[CW PITCH]
[DIGI-SEL
R5
C3
R2
PBT2 B-8106B
• MIC UNIT B-8103A
(TOP VIEW)
L1
EP12
C1 C3
C8
EP10
R6
C7
EP3 L3
C6
J1
C5
[MIC]
• JACK UNIT B-8102B
(TOP VIEW)
[PHONES]
MAIN VR
[TWIN-PBT]
J2
C3
S1
C101
C2
C1 C102
J1
TO VR-C
SUB VR
SUB VR
NOTCH]
[TWIN-PBT]
J1
R1
R4
J1
R3
TO SW-C J2
• SD UNIT B-8107B
(TOP VIEW)
[SD CARD]
DS23
R21
J2
C1 SD J2
R3
C2
[ELEC-KEY]
MP1
J103
EP102 EP101 JACK
B-8102B
J1
J3
S1
[USB]
DS24
R22