Icom IC-706MKIIG Service Manual page 54

SECTION 10 VOLTAGE DIAGRAM
5V
R9 10k
D14
R117
DAP222
680
(MENU)
(P.AMP R118
R1
S1
1.5k
/ATT) 150
(F-1)
PRED
R2
470
Q8 3 2 1
XP4111
D15
(F-2)
R119
DAP222
680
4 5 6
R120
(TUNER
S2 ATTD
/CALL) 1.5k
(F-3)
Q15
R3
DTA114EE
470
TUND
(DISP)
RITD
Q12 4 5 6
XP4111
(LOCK)
D16
R121
DAP222
1.8k
3 2 1
SUBD
(RIT R122 (MODE)
R99
S13
/SUB) 680
150
R7 (TS)
1k
R4
1k
LCKD
(LOCK)
DS1
R6
CL-170UR-CD-D
1k (UP)
TXD
(TX)
DS3
Q1
R5
CL-170UR-CD-D
DTC114EE
150
RXD
(RX)
DS2
(DN)
CL-170PG-CD-D
C33
0.0047
R30
J1
W2 1k
SQLS
L1
GND
C7 0.0047
100u
MICL MIC
MICEL MICEL
PTT
AF AF
L/D
8VLM 8VL
W1
(MIC)
D5
MA2S111
D6
MA2S111
Q4
R49
2SD1619
220
Q9
DTA114EE
R54
1M
R52 R53
220k 100k
CP1 SUP 8
EP1 10
CP2 5V 9
+5V
CP3 SDN IC3c
A
R58
GND
B 1M IC3
BU4030BF
GND
R56 R57
220k 100k
12
11
13
IC3d
IC4
S-80945CKMC-G7F
5 1
CD OUT
2
VDD
4 3
NC VSS
RSK
PRAK
S3
R123 390
R10
18k
MENK
R124 390
S4
R125 390
R11
10k
R126 390
S5
R127 390
R12
18k
F2K
R128 390
S6
R129 390
R13
10k
R130 390
S7
R131 1.2k R14
18k
MODK
Q13
R132 1.2k
2SB1132
S8
R133 1.2k
R15 D13
R116
10k DAN202U
820
KL2S
Q14
KL1S
2SC4081
R134 1.2k
S9 R115
R135 1.2k
R16 4.7k
18k
DISK
R136 1.2k
S10
R137 1.2k
R17
10k
Q2
2SB1132
D11
R112
R138 1.2k DAN202U
S11 2.2k
BL1S
R18
Q3
18k BL2S
2SC4081
BUPK
R111
1.2k
R140 820
S12
R141 820
R19
10k
TXD
R44
3.3k
PTTL
R47
47k
FUDL 1
PC3/AN11
2
AVSS
3
D7
TEST
DAP222
4
X2
5
X1
6
VSS
7
OSC1
8
OSC2
9
RES
PTTS 10
MD0
PRED 11
P20/IRQ4/ADTRG
R50
ATTD 12
1M P21/UD
TUND 13
P22
X1
RITD 14
P23
MA-406
LCKD 15
(9.8304 MHz) P24
RXD 16
MDAK P25
TXD 17
P26
PTTS 18
P27
BL1S 19
P30/SCK1
BL2S 20
P31/SI1
SUBD 21
P32/SO1
ECK 22
MDBK P33/SCK2
EDT 23
P34/SI2
WR 24
P35/SO2
RD 25
P36/STRB
R65 R66 R67
10k 10k 10k R68 10k
10 - 1
DS4
DLC-8309YBGF
CP11
CP12
Q11
2SB1143
IC5
R95 R96
S-81250AUA-C3E
10 10
Q10
I O CP13
2SC4081
G
D9
D12 MA2S111
MA2S111
DS5
D2264
R33
CP31 W3
2.2
D10
MA2S111
CP32
R108
47k
5V
8VL
5V L5
HF50ACC322513-B
KL1S
KL2S
75 SE40 COM7 1
P97/SEG40/CL1 COM7
74 SE39 SG68 2
P96/SEG39/CL2 SEG68
73 SE38 SG67 3
P95/SEG38/D0 SEG67
72 SE37 SG66 4
P94/SEG37/M SEG66
71 SE36 SG65 5
P93/SEG36 SEG65
70 SE35 SG64 6
P92/SEG35 SEG64
69 SE34 SG63 7
P91/SEG34 SEG63
68 SE33 SG62 8
P90/SEG33 SEG62
67 SE32 SG61 9
P87/SEG32 SEG61
66 SE31 SG60 10
P86/SEG31 SEG60
65 SE30 SG59 11
P85/SEG30 SEG59
64 SE29 SG58 12
P84/SEG29 SEG58
63 SE28 SG57 13
IC1
P83/SEG28 SEG57
HD6433832SD48H
62 SE27 SG56 14
P82/SEG27 SEG56
61 SE26 SG55 15
P81/SEG26 SEG55
60 SE25 SG54 16
P80/SEG25 SEG54
59 SE24 SG53 17
P77/SEG24 SEG53
58 SE23 SG52 18
P76/SEG23 SEG52
57 SE22 SG51 19
P75/SEG22 SEG51
56 SE21 SG50 20
P74/SEG21 SEG50
55 SE20 SG49 21
P73/SEG20 SEG49
54 SE19 SG48 22
P72/SEG19 SEG48
53 SE18 SG47 23
P71/SEG18 SEG47
52 SE17 SG46 24
P70/SEG17 SEG46
51 SE16 SG45 25
P67/SEG16 SEG45
R1
5V
RV-300
SQL
(AF)
GND
5V
AFV
(RF/SQL)
GND
DN
5V
(RIT)
UP
5V
SFT
(SHIFT)
GND
R2
TP96D231E20-20F
-10KB-1897
J1
W1
J3
R27
4.7k R102
SQLL SQL
220k
R26
4.7k
AFGL AFV
R85
100k
R29
4.7k
R106
SFTL SFT
D1
220k
DA221
R38
100
R37
22k
R73 R72 R71 R70 R69
4.7k 4.7k 4.7k 4.7k 4.7k
L4
HF50ACC322513-B
75 WR
R/W/(WR)
74 RD
E(RD)
73 R76 2.2M
CL(OSC2)
72
CS(OSC1)
71 AD
A0
70 SG0
SEG0
69 SG1
SEG1
68 SG2
SEG2
67 SG3
SEG3
66 SG4
SEG4
65 SG5
SEG5
64 SG6
SEG6
63 SG7
IC2
SEG7
SED1522F0C
62 SG8
SEG8
61 SG9
SEG9
60 SG10
SEG10
59 SG11
SEG11
58 SG12
SEG12
57 SG13
SEG13
56 SG14
SEG14
55 SG15
SEG15
54 SG16
SEG16
53 SG17
SEG17
52 SG18
SEG18
51 SG19
SEG19
5V
VR BOARD
AFL
AF
AFS
(PHONE)
(SPEAKER)
S1
R100 1M IC3
BU4030BF
R101
100k
6
4 SDAK
5
IC3b
R104 1M
R105
100k 7
2
3 SDBK
1
14
C14
IC3a
0.1
J2
AFS
PHNK
AFLS
R39
100
(PHONES)
MP19
R93 1k LRXD CP21
LTXD CP22
R92 1k
8V CP23
AF AFO CP24
MAIN (3)
L2 GND CP25
J1421
HF50ACC322513-B
MIC MIC CP26
MICEL MICE CP27
L3 PWK CP28
HF50ACC322513-B
(POWER)
TXD
R142 Q16
100k CPH3404
D2
DA221
S14
(POWER)
D3
DA221
DISPLAY BOARD