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