XR-5W497RB SERVICE MANUAL
AEP Model
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. • Notice that the minus side of a tantalum capacitor may be damaged by heat.
FM/AM CASSETTE CAR STEREO MICROFILM
–1–
XR-5W497RB
3-2. BLOCK DIAGRAM — TAPE SECTION —
TUNER SECTION
TAPE L
SUB SYSTEM CONTROL IC201 (2/2)
EQ AMP/DOLBY NR IC401 R/F 18 70U/120U 17 ON/OFF 14
48
FWD EQ AMP
R-CH
A
DOLBY NR
34 F/R 27 METAL 35 DOLBY
OSC 1 8
37 XI 11
AUTO MUSIC SENSOR
X201 8MHz
OSC 2 9
MS
21
X202 32.768kHz
XO 12
36 AMS
46 R-CH REV 43 R-CH
TAPE MECHANISM
INSERT S-CLK S-DATA C-REQ RESET
28 AMS GAIN 33 MUTE E2D 70 E2CK 68
41
RV431 DOLBY LEVEL L-CH
BATT
POWER CONTROL Q231,232
TU +B 8.5V REG Q233
TU 8.5V
ISO701 (3/5) CDC-CTL 42 37 30 31 32 26 POWER CONTROL Q450,451
TA 5V
INSERT SCL SDA CRQ RESET
INDICATOR 25
BATT LED DRIVE Q81
D81 BATT
POWER SWITCH Q911,912
16
17
CDC +B
CDC-CLT
BATT
5V REG Q452
29 TAPE ON
– 11 –
DATA CLK
TA +B TA 5V
TA +B
04
5 6
TUNER ON 19
1 4 5 6 8
Signal path : PB
EEP ROM IC241
CDC
CN451 SW+B 3 SW5V 7
MS-GV 19 RADIO/TAPE 16
D OUT 41
CDC DATA OUT Q702
14
D IN 40
CDC DATA IN Q703
13
CLK 39
CDC CLK IN Q704
15
– 12 –
CDC DOUT
CDC DIN
CDC CLK
XR-5W497RB 2-3. BLOCK DIAGRAM — TUNER SECTION — ISO701 (1/5) 11
SREMOTE Q705
S-REMOTE IC561
19 CDC-L
12
8
20 R-CH
CDC-R 7
3 2
TEL (+) TEL (–) 12
1
TAPE SECTION
A IC521
TAPE L SOURCE SELECT IC531
TUNER UNIT TU101
15 12 11 14
IC581 AM ANT
L CH 18
2
FM ANT
R CH 16
3
1
AUDIO L
13
D252
9 10
BATT H CHECK Q253
SOURCE SELECT IC511 3 AM NOISE CANCEL 16 IC141
5 1 3
9
8
FM +B
TU 8.5V
9
+B
AM 8.5V
10 AM +B
ANT OPEN 57
ANT OPEN DET Q131-134
ANT OPEN 58
ANT SHORT DET Q135
BATT 7
Q140 FM 8.5V
B
R-CH Q571
AM DET 12 AM IF 14
SYSTEM CONTROL IC801 (1/2)
POWER CONTROL Q801,802
BATT L CHECK D251Q251,252
S-REMOTE 16
Q254
69 70 73 72
R-CH
2 4
35
F701
+B
BATT MAIN 1 MAIN 2 SUB 2 SUB 1
DET 99
SAFE
1
DSP SECTION
AUSEL
J101 (ANTENNA)
VDD B VDD A
5V REG Q803
BATT
Q815
SAFE CONTROL Q861-863
1
33
SAFE DET 2 IC841
SAFE
HOLD 98 VDD B
SUB SYSTEM CONTROL IC201 (1/2)
SEEK 13 S-METER 19
RV171 S-METER
22 9 13 14 17 16 11 8 12 11
DX/LO 4 WID/NAR 15
WID/NAR CONTROL Q151,152
CE DO CLK DI
65 74 66 68 67
GALA 15 S-CONTACT 53
12 XO
X210 4.332MHz
13 XI
SYNC ID DO CL DI CE SYR
18 19 20 21 22 23 24
52 51 50 62 63 61 64
SYNC ID D IN CLK D OUT CE SYR
54 NOISE DET
TU +B
8.5V REG Q130
VT +B
POWER CONTROL Q136,137
ANT +B
1
04
APS 5 IC303
BATT
29 GALA
32 S-CONTACT ISO701 (2/5)
C
AOUT 18 XT 47 35
PWN
D0-3
DSP SECTION
ILL DUTY
LED DRIVE Q31,32
X301 4.195MHz
XT 48 TIR DEMOD IC302
D0-3 RESET WR RD CE
66 80 1 79
4
53 54 55 56
SAS TAS RESET SADX WR CSI RD D IN/OUT CE
26
LIN
72 FM MS
36 37 39 40 44
WE 46 RWCK 50
22 18 23 17 15 11 16 2
SAS TAS SAD CS DOUT DIN WE RWCK
D31-51, 53-56 (KEY BACK LIGHT)
Signal path : FM : AM : CD
24 ANT ON
– 13 –
ILLUMI Q906
TIM CONTROL IC301
Q181 67 NOISE ON
34
ILLMI DET Q901
SCONTACT Q714
3-6
5
AM 8.5V
NOISE DET 1 IC181
Q902
POWER CONTROL Q825,826
GALA Q703
PDWN 65 POWER CONTROL Q103
K-LINE
SECURITY TX Q827-829
BATT
82 GALA 18 S-CONTACT
1-4
2 MPX
WAKU-UP BUSY CLK D-OUT D-IN ILL DUTY 26
RDS MODULATOR IC210
FM DET 23
31
TX
4
MODE 88
17 43 44 45 46
77 WID/NAR 1 78 WID/NAR 2
Q161
FM 8.5V
73 75 74 76
TX 38
VDD C
RDS
FORCED 24 WID/NAR
CE 2 AOUT MONO/STE D IN 3 CLK 4 AM IF D OUT 5 FM IF FM OSC XOUT 1 AM OSC DX/ILO X IN 24 WID/NAR X120 FM ON 7.2MHz AM ON
RX
1
6
31 VDD P-ON POWER CONTROL Q804,805
VDD A WAKU-UP BUSY CLK D-IN D-OUT
RX 37
D812
VDD D
57 S-METER (FM) VDD 18 P-ON 55 MULTI PATH 38 SD
PLL IC211
VT 5 ST-IND 22 AM IFC 11 FM IFC 21 VCO 6
POWER CONTROL Q101
S-METER CONTROL Q171,172
POWER CONTROL Q236,237
TEL-MUTE
K-LINE IC821
KLINE/TEL 19
17 B/U CHECK 15 RESET VDD A
69 SEEK 56 S-METER (AM)
SD 20
TU8.5V
D802
23 TU MUTE B/U DOWN 16 RESET 14
30
TEL MUTE DET Q785,786
TEL MUTE 39
K-LINE
MUTE CONTROL Q573,574
RESET 2 1 IC802
– 14 –
XR-5W497RB
2-4. BLOCK DIAGRAM — DSP SECTION — ELECTRONIC VOLUME IC605
AUDIO DSP IC603 LINE AMP IC602
1 7
92 93
36 30 29 35
ADC
DAC
DRDY WRQ CS WRDY
FL
3
84
LPF 1 IC604
20
15
VOL DATA CE CLK
2
3 AMP 1 2 IC721
Q711
Q973
ISO701 (4/5) 25 FL (+) 24 FL (–)
4 6
1
8 7 9
DSP
11 MODE
R-CH
DIAG 12 DAC PD RESET
81 SPEAKER
34 37 33
26
8 7 9
27
11 MODE
DATA CE CLK
5 6
RL
3
X601 16.9344MHz
LPF 1 IC606
20
15
VOL
3 AMP 1 2 IC771 Q975 AMP MODE CONTROL Q960-964
Q761
MUTE CONTROL Q781,782
SYSTEM CONTROL IC801 (2/2)
C
ILL DUTY
LED CONTROL Q905 LED DRIVE Q21,22
DAR CLK CE DAF
AUDIO MUTE BEEP DA AMP DIAG AMP MODE SP RL OPEN SP(R) SHORT SP(F) SHORT
SCLK DIN DOUT RST PD WRDY CS WRQ DRDY
89 92 93 20 86 21
ILLUMI ON ROT A ROT B ON-KEY TP-KEY TIM/EJ
DSP
48 46 47 51 35 45 44 50 49
S3
S2
TP SET
TIM
IC941 R-CH
1
ENI 22
3
IC921
1
DIAG DET Q921
DIAGNOSTIC DETECT IC301,302
Q706
Q701
BATT
R-CH
POWER CONTROL Q810,811
R-CH
D815
ISO701 (5/5) 8 CLK 9 2ND DOUT DISPLAY 10 CE 4 FL 3 FR 1 LINE OUT RL 2 RR 6 AMP-REM
D816 BATT EXT AMP CHECK Q816
1
9V REG 2 IC811 4
S9V 5V REG Q808
P-ON 32 +B DET D819
+B-AD 25
(EJECT)
Q705
Q707
EXAMP ON 80
S1
21 RR (+) 22 RR (–)
DIAG DET Q941
Q821 CLK 43 DO 42 ENO 41
EXAMP NG 76
D20-29 (LCD BACKLIGHT)
3
SP FL OPEN 27
85 TIM-KEY 84 EJ-KEY
RE1 (ON) (ROTARY ENCODER)
POWER AMP IC902
DIAG CONTROL Q971,972
56 34 78 81 29 64 61
SP(R) CLIP 63 SP(F) CLIP 60
2ND DISPLAY
52 53 55 54
27 RL (+) 28 RL (–)
4 6
1
ELECTRONIC VOLUME IC606
TUNER SECTION
23 FR (+) 24 FR (–)
DIAG 12
BATT BATT
POWER CONTROL Q806,807
S5V
AUD +B
SEG 7-65 SEG 1-6
LCD DRIVER IC1
KEY-REQ LCD OFF STB DATA SCK
16 14 19 18 17
1 5 6 7 8
KEY-REQ LCD ON CE DATA CLK
X2 10 LCD1
LCD1 LIQUID CRYSTAL DISPLAY PANEL
COM 0-7
32-90
93-100
AUDIO ON 79
26-31
TUNER SECTION
AUDIO L
SI SO SCLK
B
POWER AMP IC901
X1 11
Signal path : FM
X801 4.915MHz
KEY 1-4 22-25
04
KEY-IN MATRIX S4-25, 27
– 15 –
– 16 –
• IC Block Diagrams
HPF1
DETECTOR
LPF
13 VCC
12
11
10 9
OR
IF AGC IF AMP
WF AFOUT
14
GATE
IFDET
15
VTH
AFAGC
16
VCC
IF-IN
IC141 HA12181FP
PULSE DETECTOR
AF AMP
LPF
REFERENCE CURRENT CIRCUIT
AF AGC
NOISE AGC
PULSE DETECT 1 GATE PULSE GENERATOR
HPF PULSE DETECT 2 GATE PULSE 1
GATE PULSE 2 SW2
PHASE CURRENT
HIGH PASS AMP (WAVEFORM COMP.)
LEVEL DIFFERENCE DETECTION
SW3
BUFFER AMP
SW4
SW1
1
2
3 4
5
GND 6 7 8
BIAS1
AF-IN BIAS2
PHASE
HOLD GND HP
REFERENCE CURRENT CIRCUIT (WAVEFORM COMP.)
IFAGC
REFERENCE VOLTAGE CIRCUIT
SW5
IC531 MC14052B IC210 LC72720M
VREF
1
MPXIN
2
VDDA
3
ANTIALIASING FILTER 24 SYR REFRENCE VOLTAGE
VSSA
4 57KHz BPF (SCF)
RAM (24 BLOCK DATA)
23 CE 22 DI 21 CL
CCB
16 VDD
2X0
1
2X2
2
2XCOM
3
14 X1
2X3
4
13 XCOM
15 X2
12 X0
2X1 5 INH
6
11 X3
VEE
7
10 A
VSS
8
9
B
VS
K
GND DRIVER
18 SYNC 17 T7 16 T6 15 VSSD
CLK(4.332MHz) SYNC DETECT-1
5
SYNC DETECT-2
14 VDDD 13 XIN
1.75V
– 46 –
1
2
3
4 TX
XOUT 12
SYNC/EC CONTROLLER
TEST
OSC/DIVIDER
6
+ –
ERROR CORRECTION (SOFT DECISION)
7
VCC
T1 7 T2 8 T3 9 T4 10 T5 11
8 19 RDS-ID
+ –
–
DATA DECODER
VREF
LI
CLOCK RECOVERY (1187.5Hz)
LO
PLL (57KHz)
DRIVER
6
IC821 L9637D
RX
CIN
MEMORY CONTROL
+ –
5
DRIVER
FLOUT
+
20 DO SMOOTHING FILTER
IC121 LC72146M
XOUT
1
CE
2
DI
3
CLK
4
DO
5
REFERENCE DIVIDER CCB I/F
24 XIN 23 VSS
22 AOUT
6
SWALLOW COUNTER 1/16,1/17 4BITS
7
21 AIN WIDNARW
8
MONO STE
9
20 PD0 12BITS PROGRAMMABLE DIVIDER
DATA SHIFT REGISTER LATCH
DX.LO 10
PHASE DETECTOR CHARGE PGMP
19 PD1 18 VSS
AM.ON 11 FM.ON 12 17 FM.OSC
16 AM.OSC
POWER ON RESET
15 VDD
14 FM.IF
UNIVERSAL COUNTER
13 AM.IF
N.C
R-IN (–)
N.C
R-IN (+)
L-IN (+)
N.C
L-IN (–)
N.C
IC561 TA2050F
16
15
14
13
12
11
10
9
+
–
–
+
1
2
3
4
5
6
7
8
R-OUT
VREF
N.C
GND
N.C
VCC
N.C
L-OUT
V REF
– 47 –
IC241 S-24C04AFJA
DOUT
VCC
7
TEST
6 5
SCL SDA
42 41 40 39 38 37 36
CS3 CS2 CS1 SADX SADY
DATA OUTPUT ACKNOWLEDGE OUTPUT CONTROL CIRCUIT
DIN
Y DECODER
1 2 3
R/W
SELECTOR
X DECODER
A0 A1 A2
8
ADDRESS COUNTER LOAD
EEPROM
INC
DATA REGISTER
DEVICE ADDRESS COMP COMPARATOR LOAD SERIAL CLOCK CONTROL CIRCUIT
START/STOP DETECTION CIRCUIT
GND
HIGH VOLTAGE GENERATOR
4
MON
RWCK DVDD
XT XT
WE
DROM DI/0
CS4
50 49 48 47
46
45 44
43
TIMING CONTROLLER MCU I/F
REGISTER CONTROLLER
TAS SAS
35 PDWN 34 TEST 33 TEST
STATUS REGISTER
ACON 8 TEST 9 MCUM 10
ADDRESS CONTROLLER
32 RSEL2 31 RSEL1
ADPCM ANALYZER/ SYNTHESIZER
CE 11
TEST CIRCUIT
30 DGND 29 AGND
SG CIRCUIT
FOUT AOUT
19 20 21 22 23 24
25
26
27
28 MIN
17 18
MOUT
16
LINE
15
ADIN
LPF
+ -
12BIT ADC
+ -
12BIT DAC
TEST
TEST 12 TEST 13 TEST 14
DATA I/O
OSC
LOUT
BUSY 5 RPM 6 VPM 7
51
– 48 –
SG SGC
1 2 3 4
56 55 54 53 52
FIN AMON DVDD AVDD
D0 D1 D2 D3
CE RD WR RESET NAR
IC301 MSM6688GS-2K
TIMING GENERATOR ADDRESS MULTIPLEXER
VCC RS/A
24
RFSH
VCT 1
INAO 1
VRIN 1
OUT 1
N.C.
GND VCT VCC
20 19
18
17
16
15
14
13 12 11
– +
8dB STEP VOLUME
LATCH CONTROL
LATCH
ROW ADDRESS COUNTER SAD SAS
18
TAS
17
CS
16
WE
15 14
DOUT
RAI (L)
N.C
PB-OUT (L)
N.C
N.C
N.C
NR-DET (L)
N.C
40
39
38
37
36
35
34
33
32
31
FFI
RIP
41
MS-VREF
TAI (L)
42
30
29
DOLBY B NR (L) T/R EQ-OUT 43
28 NOI
EQ-OUT-M 44
27 MS-GND 120/70 26 MA-OUT
–
+ 25 MSI
NFI (L) 45 24 MS-DET
DET RIN (L) 46
23 MS-VCC
F/R VREF (L) 47
22 VCC FIN (L) 48 MS AMP
21 MS-OUT
– 20 D-GND
+
– GND 50
+
LPF
19 MS-GV
FIN (R) 51 18 R/F VREF (R) 52 17 70U/120U
F/R RIN (R) 53
16 RADIO/TAPE NFI (R) 54 15
+
120/70 EQ-OUT-M 55 T/R
EQ-OUT 56
6
7
8
BIAS
RAI (R)
N.C
PB-OUT (R)
N.C
N.C
9
10
11
– 49 –
12
13
14 ON/OFF
5
N.C
4
N.C
3
NR-DET (R)
2
N.C
1
TAI (R)
DOLBY B NR (R)
6
7
8
9 10 CLK INIT
4 5
DATA
3
CE
2
VRIN 2
1
INAO 2
NC
1dB STEP VOLUME
OUT 2
8dB STEP VOLUME
+ –
IC401 HA12164
GND 49
VCT BUFFER
ZC DET
SHIFT REGISTER
VCT 2
WRITE CLOCK GENERATOR
23 22
INN 2
ROW ADDRESS REGISTER
COLUMN ADDRESS COUNTER
–
1dB STEP VOLUME
REFRESH ADDRESS COUNTER
INP 2
COLUMN DECODER I/O CONTROL
VSS 13
ROW DECODER
8,388,608DATA REGISTER
TEST 9 TEST 10 DIN 11 NC 12
REFRESH TIMER
26 25
N.C
NC TEST TEST
1 2 3 4 5
N.C
TEST RWCK
IC605, 607 CXA1846N INP 1 INN 1
IC302 MSM6684JSDR1
A10 A9 A8
A13 A12 A11
A15 A14
A16
I06 I05 I04 I03 I02 I01 I00
I07
DVDD DVSS DZFSET DVDD DVSS
DVB DVB
IC603 AK7712A
A10 A9 A8
A13 A12 A11
A15 A14
I07 I06 I05 I04 I03 I02 I01 I00
DZF2 76 77 78 79 80 81
DXF1 NC AVB A-OUT-R2 A-OUT-L2
A16
75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51
A7 DZF AOUTR AOUTL
SDATA LRCK VREFL DADC2 BCLK MCLK VREFH
NC 82
A6 A5
SDOUT3
A4 A3 A2 A1 A0 DSP
DZF 83 84 85 86 87 88 89
AOUTR AOUTL VREFL
SDOUT2
DRDY RDY SI SCLK
AINRAINR+ AINLAINL+
SDATA
SDIN2
MCLK
MCLK
90 91 92 93 VCOM 94 VRADL 95 AVSS 96 AVDD 97 VRADH 98
DVDD
48 47 46 45 44 43 42 41 40 39 38 37 36 35
A7
34 33 32 31 30 29
RQ CS
BCLK LRCK
VREFH
AINRAINR+ AINLAINL+
DVSS
A6 A5 A4 A3 A2 A1 A0 WE RASCE CASRF SO DRDY RDY SI SCLK DVDD DVSS WRQ CS
ADC BCLK
VREFL
28 DVDD
LRCK DSPCLK AD/DACLK
VREFH
27
Divider XTO XTI
26
BCLK LRCK CKLO
NC 100
TESTI2 TESTIO3 DVB DVB SDIN2
SDOUT3 SDOUT1 SDIN1 SMODE
PDAD PDDA PD RESET TESTIO1
SDDA SDDA2
8
SDAD SDOUT2
3 4 5 6 7
TESTI1 OPCL
9 10 11 12 13 14 15 16 17 18 19 20
1 2
21 22 23 24 25
DVDD DVSS
99
BCLK LRCK CLKO
AVB
SDATA LRCK DAC1 BCLK MCLK
SDOUT1 SDIN1 SMODE
A-OUT-R1 A-OUT-L1 VRDAL AVSS AVDD VRDAH NC
WE RASCE CASRF SO
50 49
IC901, 902 TDA8563AQ
POWER STAGE
POWER STAGE
POWER STAGE
POWER STAGE
VP
+ –
STANDBY SWITCH
INVERT AMP
NON-INVERT AMP
NON-INVERT AMP
INVERT AMP MUTE SWITCH
S-GND
VP1
OUT-1 (+) GND-1 OUT-1 (–) OUT-2 (–) GND-2 OUT-2 (+)
10
11
12
13 IN-2
4 5 6 7 8 9
V-DIAG
3
MODE
2
DIAGNOSTIC CIRCUIT
VP2
1 IN-1
MUTE CONTROL CIRCUIT
– 50 –
XTO XTI
