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2-3. BLOCK DIAGRAM — TUNER SECTION —
ISO701 (1/5)
11
S-REMOTE
IC561
19
CDC-L
12
8
20
R-CH
CDC-R
7
TEL (+)
TEL (–)
12
TUNER UNIT
TU101
J101
1
AM ANT
L CH
18
(ANTENNA)
FM ANT
R CH
2
16
R-CH
AM DET
12
3
AM IF
14
16
FM 8.5V
8
FM +B
+B
TU 8.5V
9
10 AM +B
AM 8.5V
SEEK
13
19
S-METER
SD
20
VT
5
ST-IND
22
AM IFC
11
FM IFC
21
VCO
6
DX/LO
4
WID/NAR
15
FORCED
24
WID/NAR
Q161
FM DET
23
POWER
TU8.5V
CONTROL
FM 8.5V
Q101
POWER
CONTROL
AM 8.5V
Q103
8.5V REG
TU +B
VT +B
Q130
POWER
CONTROL
ANT +B
Q136,137
04
3
1
TAPE
2
A
TAPE L
SECTION
IC521
IC581
3
1
Q571
SOURCE SELECT
IC511
5
AM NOISE
9
1
7
CANCEL
3
IC141
Q140
2 4
MUTE
CONTROL
Q573,574
RV171
S-METER
S-METER
CONTROL
Q171,172
PLL
IC211
22
AOUT
CE
2
9
MONO/STE
D IN
3
13
AM IF
CLK
4
14
FM IF
D OUT
5
17
FM OSC
16
AM OSC
XOUT
1
11
DX/ILO
8
WID/NAR
X IN
24
X120
12
FM ON
7.2MHz
11
AM ON
WID/NAR
CONTROL
Q151,152
RDS MODULATOR
IC210
2
MPX
SYNC
18
ID
19
12
XO
DO
20
X210
CL
21
4.332MHz
13
XI
DI
22
CE
23
SYR
24
NOISE
5
DET
1
IC181
Q181
APS
1
5
IC303
– 13 –
S-
REMOTE
Q705
BATT
SOURCE SELECT
IC531
15
POWER
DSP
CONTROL
12
B
13
AUDIO L
Q801,802
11
SECTION
14
D252
9 10
BATT H
CHECK
Q253
BATT
BATT L
Q254
CHECK
Q251,252
D251
R-CH
RESET
VDD B
2
1
IC802
SUB SYSTEM CONTROL
IC201 (1/2)
23
TU MUTE
B/U DOWN
16
RESET
14
POWER
69 SEEK
VDD A
CONTROL
VDD D
Q236,237
56
S-METER (AM)
57
18
S-METER (FM)
VDD
P-ON
55
MULTI PATH
POWER
38
SD
VDD A
CONTROL
VDD C
Q804,805
17
WAKU-UP
73
CE
BUSY
43
75
DO
CLK
44
74
CLK
D-IN
45
76
DI
D-OUT
46
GALA
15
S-CONTACT
53
77
WID/NAR 1
78
WID/NAR 2
52
SYNC
TIM CONTROL
51
ID
IC301
50
D IN
62
CLK
63
D OUT
AOUT
18
61
CE
64
SYR
XT
47
X301
4.195MHz
PDWN
65
35
PWN
XT
48
TIR DEMOD
54
NOISE DET
D0-3
D0-3
SAS
36
22
4
67
NOISE ON
RESET
66
53
RESET
TAS
37
18
WR
80
54
WR
SADX
39
23
RD
1
55
RD
CSI
40
17
CE
79
56
D IN/OUT
44
15
CE
11
72
FM MS
WE
46
16
26
LIN
RWCK
50
2
24
ANT ON
VDD B
5V REG
VDD A
Q803
SYSTEM CONTROL
IC801 (1/2)
ANT OPEN
57
DET
ANT OPEN
Q131-134
ANT SHORT
ANT OPEN
58
DET
Q135
16
S-REMOTE
BATT
69 MAIN 1
Q815
70
MAIN 2
SAFE
73
99
SUB 2
DET
CONTROL
Q861-863
72
SUB 1
98
HOLD
39
TEL MUTE
D802
K-LINE
19
KLINE/TEL
17
B/U CHECK
IC821
15
RESET
RX
37
1
RX
D812
38
4
TX
TX
31
VDD P-ON
MODE
88
65 WAKU-UP
74 BUSY
POWER
BATT
CONTROL
66 CLK
Q825,826
68 D-OUT
Q902
67 D-IN
ILLMI
ILL DUTY
26
DET
Q901
82 GALA
18 S-CONTACT
GALA
Q703
S-
CONTACT
Q714
DSP
C
ILL DUTY
SECTION
IC302
SAS
D31-51, 53-56
TAS
(KEY BACK LIGHT)
SAD
Signal path
CS
DOUT
: FM
DIN
: AM
WE
: CD
RWCK
– 14 –
XR-5W497RB
35
F701
+B
33
SAFE DET
1
2
SAFE
IC841
30
TEL MUTE
TEL-MUTE
DET
Q785,786
31
K-LINE
6
SECURITY
TX
Q827-829
34
ILLUMI
Q906
BATT
29
GALA
32
S-CONTACT
ISO701 (2/5)
LED
DRIVE
Q31,32
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