Sony CDX-DAB500A / CDX-DAB500U Service Manual ▷ View online
CDX-DAB500A/DAB500U
CDX-DAB500A/DAB500U
17
17
: TUNER
: AUX
: AUDIO
SIGNAL PATH
R-ch is omitted due to same as L-ch.
A
ELECTRICAL VOLUME,
INPUT SELECTOR
IC401
SYSTEM CONTROLLER
IC501 (2/3)
AU_OUT_FL 36
AU_OUT_RL
R-CH
FL+
FL–
5
6
8
FR+
FR–
2
7
RL+
CN301 (1/2)
POWER AMP
IC301 (1/2)
RL–
RR+
3
4
1
RR–
R-CH
MUTING
Q404
MUTING
Q402
IN-RL
11
IN-FL
12
I2C_SDA
2
I2C_SCL
4
OUT-RL- 7
OUT-RL+ 9
OUT-FL- 3
OUT-FL+ 5
R-CH
DIAG
25
STB
22
BEEP
16
R-CH
R-CH
28
I2C_SDA
27
I2C_SCL
57
DIAG
58
AMPSTB
26
BEEP
56
ATT
J1
(ANTENNA IN)
TU_LCH
5
I2C_SDA
23
I2C_SCL
22
R-CH
FRONT
AUDIO OUT
L
R
R-CH
REAR
AUDIO OUT
L
R
B
PRE_R
PRE_L
27
AU_OUT_RCH
28
AU_OUT_LCH
30 AU_IN_SUB
FL
31 AU_IN_RL
33 AU_IN_FL
SUB
RL
AUX_LCH
8
MUTING
CONTROL
Q407, 409
J402
D403
A_ATT
D
TU001
TUX-DAB02
(TUNER UNIT)
AUDIO_OUT_L
RF_ANT_IN
ANT+B
SDA
SCL
RSTN
AUDIO_OUT_R
J901
AUX
38
45 HIT2_SDA
46 HIT2_SCL
47 HIT2_RESET
46 HIT2_SCL
47 HIT2_RESET
AU_OUT_SL 40
MUTING
Q406
75 DAB_SDA
76 DAB_SCL
82 DAB_PORn
76 DAB_SCL
82 DAB_PORn
SDA
SCL
RSTN
E
ANT_REM
4-2. BLOCK DIAGRAM - MAIN Section -
(Page 18)
(Page 16)
(Page 16)
(Page 16)
CDX-DAB500A/DAB500U
CDX-DAB500A/DAB500U
18
18
4-3. BLOCK DIAGRAM - PANEL, POWER SUPPLY Section -
SYSTEM CONTROLLER
IC501 (3/3)
ACC
13
SYS_REM
9
15 +B
B/U B+
REGULATOR
IC301 (2/2)
CN301 (2/2)
AUDIO+B (8.5V)
30
VP2 6
+8.5V
+8.5V
AMP-REM 29
ANT-REM 27
SERVO-3.3V
31
PANEL+B
34
BU+B
37
BU +3.3V
VP1 20
MECHA-6V
33
+3.3V
REGULATOR
IC402
ACCESSORY
CHECK
Q301
ACC_IN 55
VP 35
RESET
SYSRST
10
BU_IN
SYS_RST
C
ILL +B
DR_6V
VDD_3.3V
EN_USB 48
FLT_USB 50
EN_SYS 51
BUIN 17
SYNC_OUT 24
F4
USB_VBUS
VIN 3
2 LX
USB_IN
7
5 USB_OUT
DC/DC CONVERTER
IC1300
SYNC
8
EN_SYS
4
EN_USB
12
FL
T_USB
9
D805
D806
BATTERY
CHECK
Q802
BACK UP
VOLTAGE
DETECT
Q801, 803
LCD_CE
98
LCD_CLK
100
LCD_SO
99
OSCOUT
OSCIN
X501
7.92MHz
X502
32.768kHz
XOUT
XIN
11
13
9
8
LIQUID CRYSTAL
DISPLAY DRIVER
DISPLAY DRIVER
IC901
LCD_DATA 64
LCD_CLK 63
LCD_CE 62
17
17
CN901
CN102
NOSE_SW
1
S901 – 907,
S909 – 916,
RE901 (1/2)
S909 – 916,
RE901 (1/2)
(FRONT PANEL KEY)
RC_IN1
16
RC_IN0
95
J801
REMOTE IN
(VOLUME)
80 RE-IN0
79 RE-IN1
79 RE-IN1
ROTARY
ENCODER
RE901 (2/2)
89 KEYACK0
90 KEYACK1
92 KEYIN1
93 KEYIN0
SIRCS
2
REMOTE CONTROL
RECEIVER
IC902
DAB/HD +3.3V
DAB_ON 83
+3.3V
REGULATOR
IC1304
D501
ANT_REM
E
LED DRIVE
Q931
LIQUID CRYSTAL
DISPLAY PANEL
LCD901
COLOR1
2
LED DRIVE
Q901
BACK-LIGHT
1
LED901
(LCD BACK LIGHT)
S [1] – S [49]
SEG1 – SEG49
49
COM [1] – COM [4]
COM1 – COM4
4
LED931, 933, 935,
LED937, 939, 941,
LED943, 945, 947,
LED951, 953, 955,
LED957, 959, 961,
LED937, 939, 941,
LED943, 945, 947,
LED951, 953, 955,
LED957, 959, 961,
LED963, 965
(KEY ILLUMINATION)
LED931, 933, 935,
LED937, 947, 951,
LED953, 955, 957,
LED 959, 961, 963,
LED965, 967, 969
(KEY ILLUMINATION)
(Suffix-11)
(Suffix-21)
18
RESET SIGNAL
GENERATOR
IC403
D731
(Page 17)
(Page 16)
Note: Refer to the servicing notes “MAIN AND KEY BOARDS DISCRIMINATION”
(page 5) for how to distinguish Suffi x-11 and Suffi x-21.
CDX-DAB500A/DAB500U
CDX-DAB500A/DAB500U
19
19
For Schematic Diagrams.
Note:
• All capacitors are in μF unless otherwise noted. (p: pF) 50
• All capacitors are in μF unless otherwise noted. (p: pF) 50
WV or less are not indicated except for electrolytics and
tantalums.
tantalums.
• All resistors are in Ω and 1/4 W or less unless otherwise
specifi ed.
• f : Internal component.
• C : Panel designation.
• C : Panel designation.
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
(In addition to this, the necessary note is printed in each block.)
• A : B+ Line.
• Power voltages is dc 14.4V and fed with regulated dc
• Power voltages is dc 14.4V and fed with regulated dc
power supply from ACC and BATT cords.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : TUNER (DAB)
< > : CD PLAY
• Voltages are taken with VOM (Input impedance 10 M
< > : CD PLAY
• Voltages are taken with VOM (Input impedance 10 M
).
Voltage variations may be noted due to normal production
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
Voltage variations may be noted due to normal production
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F :
F :
AUDIO
f :
TUNER
J :
CD
d :
USB
E :
AUX
For Printed Wiring Boards.
Note:
• X : Parts extracted from the component side.
• Y : Parts extracted from the conductor side.
• f : Internal component.
•
• X : Parts extracted from the component side.
• Y : Parts extracted from the conductor side.
• f : Internal component.
•
: Pattern from the side which enables seeing.
(The other layers’ patterns are not indicated.)
• Indication of transistor.
C
B
These are omitted.
E
Q
Caution:
Pattern face side:
(Conductor Side)
Parts face side:
(Component Side)
Pattern face side:
(Conductor Side)
Parts face side:
(Component Side)
Parts on the pattern face side seen
from the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
from the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
• Waveforms
– MAIN Board –
3
IC501 qa (OSCOUT)
1 V/DIV, 50 ns/DIV
126 ns
2.9 Vp-p
5
IC701 yj (XO)
500 mV/DIV, 20 ns/DIV
59 ns
1.5 Vp-p
6
IC601 is (X2)
1 V/DIV, 50 ns/DIV
83 ns
2 Vp-p
2
IC501 9 (XOUT)
1 V/DIV, 20
Ps/DIV
30.4
Ps
2.6 Vp-p
1
IC1300 1 (BST)
5 V/DIV, 1
Ps/DIV
2.4
Ps
17 Vp-p
4
IC701 qd (RFO)
(CD play mode)
500 mV/DIV, 200 ns/DIV
1.2 Vp-p
The components identifi ed by mark 0
or dotted line with mark 0 are critical for
safety.
Replace only with part number specifi ed.
or dotted line with mark 0 are critical for
safety.
Replace only with part number specifi ed.
CDX-DAB500A/DAB500U
CDX-DAB500A/DAB500U
20
20
(2/4)
BOARD
1
MAIN
2
BOARD
(3/4)
MAIN
3
BOARD
(4/4)
MAIN
IC B/D
IC B/D
3.3
7.2
14.4
5
14.2
14.4
3.3
7.2
7.2
7.2
4.6
4.3
4.3
4.3
4.3
4.3
7.2
7.2
7.2
14.4
7.2
3.3
3.3
13.3
13.8
8.3
3.3
10.3
6
0
0
0.6
0
0
0
0
0
0
0
0
0
0
0
0
6
0
6
3.3
0
0
0
13.5
13.5
3.3
5
5
3.3
3.3
220
R404
R423
220
R411
10k
10k
R405
R410
220
R424
10k
0.22
C301
16V
C312
10
47k
R312
4.7k
R314
0.22
C308
150
R307
1
C306
22
R429
0.1
C401
R818
220k
1k
R820
220
R303
220
R304
47k
R313
10k
R422
10k
R409
220
R305
220
R306
100
R301
100
R302
220
R407
220
R421
J801
RKZ18B2KGP1
D806
RKZ18B2KGP1
D320
47k
R309
47p
C326
RKZ18B2KGP1
D323
16V
47
C313
BU_3.3V
DR_6V
D_GND
VDD_3.3V
BU_GND
R890
0
R891
0
GN1G
D324
GN1G
D318
GN1G
D321
25V
47
C416
R814
220k
0
R300
R340
0
R819
1k
RKZ7.5B2KGP1
D805
C300
1
2.2
C314
1000p
C323
16V
C425
10
6.3V
C309
220
6.3V
C403
220
6.3V
220
C411
16V
10
C413
16V
C420
10
16V
10
C424
0
R400
0
R396
0
R395
FB398
MM1836A33NRE
IC402
1
CONT
2
GND
3
NP
4
VOUT
5
VIN
DA2J10100L
D401
FB801
FB802
FB803
JL009
JL010
36V
2A
F4
JL011
JL012
JL013
0.47
C315
0.47
C317
0.47
C319
0.47
C321
0.47
C331
0.47
C330
10k
R311
10k
R378
0.1
C407
6.3V
C409
1000
140uH
L301
1
C402
4P
J402
C311
1
C421
22p
22p
C426
C412
22p
C423
22p
JL503
JL504
JL014
LTA014EUBFS8TL
Q407
LTC014EUBFS8TL
Q409
LTC014EUBFS8TL
Q802
LTC044EUBFS8TL
Q801
LSCR523UBFS8TL
Q301
LSCR523UBFS8TL
Q803
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
16P
CN301
RR+
RL+
RR–
RL–
FR+
FL+
FR–
FL–
SYS_REM
NC
ILL
NC
ACC
NC(TEL_ATT)
+B
GND
TDF8556AJ/N5
IC301
1
TA
B
2
I2C_SDA
3
OUT
-FL–
4
I2C_SCL
5
OUT
-FL+
6
VP2
7
OUT
-RL–
8
P-GND1
9
OUT
-RL+
10
SVR
11
IN-RL
12
IN-FL
13
S-GND
14
IN-FR
15
IN-RR
16
BEEP
17
OUT
-RR+
18
P-GND3
19
OUT
-RR–
20
VP1
21
OUT
-FR+
22
STB
23
OUT
-FR–
24
P-GND4
25
DIAG
26
RST
27
ANT
-REM
28
CRES
29
AMP-REM
30
AUDIO+B(8.5V)
31
SER
VO–3.3V
32
GND
33
MECHA–6V
34
P
ANEL+B
35
VP
36
CBU
37
BU+B
1000p
C398
0.1
C335
1
C302
1
C305
1
C327
R343
1k
R341
1k
R342
1k
R344
1k
R345
1k
16V
C307
220
LTC014TUBFS8TL
Q401
LTC014TUBFS8TL
Q402
LTC014TUBFS8TL
Q403
LTC014TUBFS8TL
Q404
LTC014TUBFS8TL
Q405
2.2
C422
10
C303
16V
3300
C334
BEEP
STB
RCIN0
RCIN1
I2C_SCL
I2C_SDA
RESET
DIAG
220
R402
2.2
C410
ACC
R403
10k
IC301
POWER AMP, REGULATOR
FU1
32V
10A
1
2
3
4
6
7
8
9
11
30
29
12
14
15
16
17
18
(1/4)
MAIN BOARD
+3.3V REGULATOR
IC402
PST8228UL
IC403
GENERATOR
RESET SIGNAL
IC403
IN
REMOTE
(CHASSIS)
A001
Q407, 409
MUTING CONTROL
MUTING
MUTING
LTC014TUBFS8TL
Q406
MUTING
MUTING
MUTING
MUTING
TO
CN301
ACCESSORY CHECK
Q801, 803
BACK-UP VOLTAGE DETECT
BATTERY CHECK
L
R
AUDIO OUT
FRONT
L
AUDIO OUT
REAR
R
F
G
2
4
8
A
12
C
18
E
10
16
11
15
14
H
B
17
5
19
I
6
J
3
13
1
D
9
K
L
7
0
R406
GN1G
D306
8
RR+
4
FL–
10
RR–
4
FL+
11
RL+
6
6
3
12
FR-
ACC
REM OUT
6
7
5
ACC
7
GND
16
RL–
4
8
1
FR+
7
15
3
RR-
BATT
BATT
RL–
9
2
2
1
5
FL-
FL+
13
RR+
FR+
14
GND
3
5
FR-
8
2
1
AMT REM
RL+
PW1
4
VOUT
3
VDD
VSS
NC
2
1
100k
R401
4-4. SCHEMATIC DIAGRAM - MAIN Section (1/4) -
• See page 31 for IC Block Diagrams.
(Page 23)
(Page 22)
(Page 21)
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