Icom IC-208H Service Manual page 49

MAIN UNIT (3)
BUS LINE1
HV_I
8V
5VS_W
5VS
C6
5p
m
C20 L1 L66 C41 L67
Q2
0.001 47n 0.82 18p 0.22
2SC4116
R4
100k
Q3
XP4601
3 4
2 5
1 6
R10
R29 R43
1.2k
100k 10k
DTCS_IN
WXALT
W507 W508
8V
C21 C31 R50 C49
0.0018 0.015 680k 0.033
6 5 4
1 2 3
AFO
MAIN
UNIT
(2)
8V
5VS_W
DTCS
R11 R12
C30
3.9k 39k
10
DTCS_SEL
Q1
UNR9213J
5VS_W
VRSTB VRSTB
h
i
R13
100
8V
R14
100k
R38
R15
100k
100k
R39
C19 R40 R41
100k
0.068 150k 220k
C32
180p
BUS LINE2
11 - 4
HV_I
5VS_W
C48 C58
3p 1p EP526
Q7
2SC4215
R73
1.5k
R49 R51 R56
68k 68k 68k
R53 R52
100k 10k
8 7 6 5
IC5
TC4W53FU
RX: 1.6V(AM)
RX: 1.0V(FM)
TX: 0V
R57 R67 R74 Q14
1 2 3 4
39k 22k 12k 2SJ144
C659
0.001
SQL CLOSE: 4.7V
SQL OPEN: 0V
IC4
M62363FP-650C
C72 R94
1 24
VIN1 VIN8 1 18k
2 23 l
VOUT1 VOUT8
3 22
VOUT2 VOUT7
4 21
VIN2 VIN7
5 20
VDD GND
6 19
LD RESET
7 18
CLK VDAREF
8 17
DI DO
9 16
VIN3 VIN6
C76
10 15
VOUT3 VOUT6 10
11 14
VOUT4 VOUT5
12 13
VIN4 VIN5
1
TUNE_V1 2
TUNE_V2 3
TUNE_V3 4
TUNE_U 5
R58
ATT 6
68k
BSHIFT 7
PCON_V 8
IC3 PCON_U 9
NJM12902V 10
1 14
2 13
- + + -
5VS_W
C59
3 12
390p
4 11
5 10
R88
220k
6 9
- + + -
7 8
R109 C92
180k 0.01
C99
0.1
6 5 4 6 5 4
1 2 3 1 2 3
R87
470k
C94
0.001
C71 R92 R95 C82
470p 33k 10k 220p
C83
220p
C95
0.1
IC8
TA31136FN
R111
470
8V
W527
D531
DAN222
EP524 W502
EP525
IC11
M62352GP
20
VSS GND
19
AO3 AO2
18 REF_V 8V
AO4 AO1
17 DA_DATA
AO5 DI
R629
16 DA_CK
AO6 CLK 330k
15 DA_STB TX_MUTE
AO7 LD
14
AO8 DO
13 REF_CON
Q42
AO9 AO12
12 TUNE_8 UNR9113J
AO10 AO11
11
VDD VCC
5VS_W
TX_MUTE
HV_I
5VS_W
IC9 FI1 IC10
TC4W53FU CFWS450HT TC4W53FU
1 8 8 1
O I
2 7 7 2
3 6 FI2 6 3
CFWM450E
4 5 5 4
I O
5VS_W
R120 R119
1k 330
Q24
UNR9114J
5VS_W
Q25
UNR911NJ
Q21
C110 R123 R129
UNR9213J
0.1 3.3k 22k
p
8V
R611 R615
150 100
C237 C297
0.047 0.047
R225 R212 R256 R252
10k 220k 220k 10k
IC15
NJM3404AV
1 8
R226 R255
33k 33k
2 7
- +
3 6
+ -
4 5
R234 R254
180k 180k
BUS LINE1
HV_I
HV_I
5VS_W
5VS_W
v
R5CTRL
AM
WN_SEL
MAIN
UNIT
(4)
8V
Q45
UNR9113J
BUS LINE3
BUS LINE2