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XR-5W497RB
Service Manual
14 pgs2.38 Mb0

AUDI XR-5W497RB Service Manual

XR-5W497RB
SERVICE MANUAL
AEP Model
MICROFILM
Dolby noise reduction manufactured under license from Dolby Labo­ratories Licensing Corporation. “DOLBY” and the double-D symbol a are trademarks of Dolby Laboratories Licensing Corporation.
Notes on Chip Component Replacement
• Never reuse a disconnected chip component.
damaged by heat.
FM/AM CASSETTE CAR STEREO
– 1 –
XR-5W497RB
3-2. BLOCK DIAGRAM — TAPE SECTION —
FWD
REV
MECHANISM
TAPE
SW+B SW5V
INSERT
S-CLK
S-DATA
C-REQ
RESET
CN451
3 7
1 4 5 6 8
R-CH
R-CH
EQ AMP/DOLBY NR
IC401
48 18
EQ
AMP
46
R-CH
43
41
RV431
DOLBY
LEVEL
L-CH
TA +B TA 5V
DOLBY
NR
AUTO
MUSIC
SENSOR
RADIO/TAPE
70U/120U
R/F
ON/OFF
MS
MS-GV
IC201 (2/2)
TUNER ON
CDC-CTL
INDICATOR
TUNER
SECTION
OSC 1
OSC 2
XI
XO
E2D
E2CK
A
8
9
11
12
70 68
19
42
X201 8MHz
X202
32.768kHz
EEP ROM
IC241
5
DATA
CLK
6
LED
DRIVE
Q81
BATT
D81
POWER CONTROL Q231,232
BATT
8.5V REG Q233
POWER SWITCH
Q911,912
TU +B
TU 8.5V
BATT
ISO701 (3/5)
16
17
CDC +B
CDC-CLT
TAPE L
SUB SYSTEM CONTROL
34 17 14
37
21
19 16
F/R
27
METAL
35
DOLBY
36
AMS
28
AMS GAIN
33
MUTE
37
INSERT
30
SCL
31 25
SDA
32
CRQ
26
RESET
POWER
TA +B
Signal path : PB
04
TA 5V
5V REG
Q452
CONTROL Q450,451
BATT
29 40
TAPE ON
CDC
D OUT
D IN
CLK
41
39
CDC DATA
OUT
Q702
CDC DATA
IN
Q703
CDC CLK
IN
Q704
14
13
15
CDC DOUT
CDC DIN
CDC CLK
– 11 – – 12 –
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
31
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
1623 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
2-3. BLOCK DIAGRAM — TUNER SECTION —
– 13 – – 14 –
XR-5W497RB
XR-5W497RB
2-4. BLOCK DIAGRAM — DSP SECTION —
B
TUNER
SECTION
AUDIO L
C
2
TUNER
SECTION
LINE AMP
IC602
1 7
ILL DUTY
92 93
DRDY
36
WRQ
30
CS
29
WRDY
35
LED
CONTROL
Q905
LED
DRIVE
Q21,22
D20-29
(LCD BACKLIGHT)
LCD1
LIQUID CRYSTAL
DISPLAY PANEL
AUDIO DSP
IC603
ADC DAC
DSP
DAC
PD
RESETSISO
5 6 34 37 33 26 27
SCLK
X601
16.9344MHz
(ROTARY ENCODER)
COM
0-7
93-10032-9026-31
SEG
7-65
FL
RL
(ON)RE1
LCD DRIVER
IC1
ELECTRONIC VOLUME
IC605
LPF
SET
TP
3 1
IC604
LPF
3 1
IC606
TIM
KEY-REQ
LCD OFF
STB
DATA
SCK
S1S2S3
(EJECT)
16 14 19 18 17
84
81
20
20
ELECTRONIC VOLUME
SYSTEM CONTROL
DAR
52
CLK
53
CE
55
DAF
54
SCLK
48
DIN
46
DOUT
47
RST
51
PD
35
WRDY
45
CS
44
WRQ
50
DRDY
49
ILLUMI ON
89
ROT A
92
ROT B
93
ON-KEY
20
TP-KEY
86
TIM/EJ
21
TIM-KEY
85
EJ-KEY
84
KEY-REQ
1
LCD ON
5
CE
6
DATA
7
CLK
8
VOL
DATACECLK
8 7 9
8 7 9
CE
DATA
VOL
IC606
IC801 (2/2)
AUDIO MUTE
SP RL OPEN
SP(R) SHORT
SP(F) SHORT
DSP
SP FL OPEN
LCD1
CLK
BEEP DA
AMP DIAG
AMP MODE
SP(R) CLIP
SP(F) CLIP
CLK
ENO
2ND DISPLAY
ENI
EXAMP ON
EXAMP NG
P-ON
+B-AD
AUDIO ON
15
15
DO
X2
X1
56 34 78 81 29 64 61
63 60
27
43 42 41
22
80
76
32
25
79
10
11
Q711
Q761
CONTROL Q781,782
DIAGNOSTIC
IC301,302
Q707
Q701
BATT
MUTE
DETECT
X801
4.915MHz
POWER CONTROL Q810,811
EXT AMP
CHECK
Q816
+B DET
D819
3 1
AMP
IC721
2
3 1
AMP
IC771
2
D815
BATT
BATT
Q975
Q973
DIAG CONTROL Q971,972
9V REG
1 2
IC811
4
AMP MODE
CONTROL Q960-964
BATT
1
11
MODE
11
MODE
1
POWER AMP
IC901
DIAG
DIAG
POWER AMP
IC902
Q706
D816
5V REG
Q808
POWER CONTROL Q806,807
ISO701 (4/5)
25
)
4 6
IC941
Q705
3
1
DIAG
DET
Q921
R-CH
R-CH
IC921
R-CH
R-CH
12
12
4 6
3
1
DIAG
DET
Q941
Q821
S9V
S5V
AUD +B
24
23 24
27 28
21 22
ISO701 (5/5)
8 9
10
4 3 1 2
6
FL (+
)
FL (–
)
FR (+
)
FR (–
)
RL (+
)
RL (–
)
RR (+
)
RR (–
CLK DOUT CE FL FR RL RR AMP-REM
SPEAKER
2ND DISPLAY
LINE OUT
Signal path : FM
SEG 1-6
KEY 1-4
22-25
KEY-IN
MATRIX
04
S4-25, 27
– 15 – – 16 –
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