Sony CDX-GT475ER / CDX-GT475UR / CDX-GT525UR Service Manual ▷ View online
CDX-GT475ER/GT475UR/GT525UR
CDX-GT475ER/GT475UR/GT525UR
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4-3. BLOCK DIAGRAM - PANEL/POWER SUPPLY Section -
SUB SYSTEM
CONTROLLER
IC601 (2/2)
MAIN SYSTEM CONTROLLER
IC501 (3/3)
ACC
13
AMP_REM
9
15 VCC
B/U B+
REGULATOR
IC301 (2/2)
CN301 (2/2)
AUDIO+B (8.5V)
30
VP2 6
+8.5V
AMP-REM 29
SERVO-3.3V
31
PANEL+B
34
BU+B
37
BU +3.3V
VP1 20
BU +5V
MECHA-6V
33
+3.3V
REGULATOR
IC402
ACCESSORY
DETECT
Q301
ACC_IN 55
VP 35
IC701 VDD +1.5V
IC601 +1.2V
IC701 VDDM +1.5V
+1.5V
REGULATOR
IC682
ILL +B
DR +6V
VDD +3.3V
USB1_ON 116
USB1_OVR 115
EN_SYS 51
BUIN 17
SYNC_OUT 24
USB_VBUS
DSP_1_5V 65
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, 806
BATTERY
CHECK
Q801 - 803
NOSE_SW
1
S901 – 907,
S909 – 916,
RE901 (1/2)
S909 – 916,
RE901 (1/2)
(FRONT PANEL KEY)
RC_IN1
19
RC_IN0
95
J801
REMOTE IN
(VOLUME)
80 RE-IN0
79 RE-IN1
79 RE-IN1
ROTARY
ENCODER
RE901 (2/2)
89 KEY_ACK0
90 KEY_ACK1
92 KEYIN1
93 KEYIN0
OSCOUT
OSCIN
X501
7.92MHz
X502
32.768kHz
XOUT
XIN
11
13
9
8
SIRCS
2
REMOTE CONTROL
RECEIVER
IC902
LIQUID CRYSTAL
DISPLAY DRIVER
DISPLAY DRIVER
IC901
LCD_DATA 64
LCD_CLK 63
LCD_CE 62
LED DRIVE
Q931
LIQUID CRYSTAL
DISPLAY PANEL
LCD901
LED939, 941, 943, 945
(GT475ER, Former type (GT475UR/GT525UR)),
LED967, 969
(New type (GT475UR/GT525UR)),
LED931, 933, 935,
LED937, 947, 951,
LED953, 955, 957,
LED959, 961, 963, 965
(KEY ILLUMINATION)
COLOR1
2
LED DRIVE
Q901
BACK-LIGHT
1
LED901
(LCD BACK LIGHT)
LCD_CE
28
LCD_CLK
29
LCD_DO
26
S [1] – S [49]
SEG1 – SEG49
49
COM [1] – COM [4]
COM1 – COM4
4
+1.5V
REGULATOR
IC681
IC601 +3.3V
+1.2V
REGULATOR
IC703
GHOST_3_3V 67
+3.3V
REGULATOR
IC603
17
17
CN901
CN102
Ver. 1.1
Note: Refer to “MAIN AND KEY BOARDS DISCRIMINATION”
on page 2 on supplement-1 for New/Former types.
CDX-GT475ER/GT475UR/GT525UR
CDX-GT475ER/GT475UR/GT525UR
22
22
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 (FM)
< > : 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 –
Note: When the complete MAIN board is replaced, the destination
setting is necessary. Refer to “NOTE THE MAIN BOARD OR
SYSTEM CONTROLLER (IC501) REPLACING” on page 4.
SYSTEM CONTROLLER (IC501) REPLACING” on page 4.
Note: When the complete MAIN board replaced, the destination set-
ting is necessary. Refer to “NOTE THE MAIN BOARD OR
SYSTEM CONTROLLER (IC501) REPLACING” on page 4.
SYSTEM CONTROLLER (IC501) REPLACING” on page 4.
Note: The components identifi ed by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specifi ed.
1
IC1300
1 (BST)
5 V/DIV, 1
Ps/DIV
2.46
Ps
18.2 Vp-p
3
IC501
qa (OSCOUT)
1 V/DIV, 50 ns/DIV
126.5 ns
3.6 Vp-p
2
IC501
9 (XOUT)
1 V/DIV, 20
Ps/DIV
30.4
Ps
2.6 Vp-p
4
IC701
yj (XO)
1 V/DIV, 20 ns/DIV
59 ns
3.7 Vp-p
5
IC601
<zc/ (XO)
500 mV/DIV, 50 ns/DIV
83 ns
1.1 Vp-p
CDX-GT475ER/GT475UR/GT525UR
CDX-GT475ER/GT475UR/GT525UR
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4-4. SCHEMATIC DIAGRAM - MAIN Section (1/5) -
• See page 32 for IC Block Diagrams.
BOARD
(4/5)
MAIN
2
(3/5)
BOARD
MAIN
3
MAIN
(2/5)
1
BOARD
IC B/D
IC B/D
5
14.3
14.4
10.3
6
0 <3.3>
8.4
13.8
3.3
4.9
3.3
4.9
14.4
4.9
4.9
3.7
3.7
3.7
3.7
3.7
3.7
4.9
4.9
14.4
4.9
3.3
4.9
3.3
5
0
6.9
0.6
6.9
0
0
3.3
0
3.3
5
0.22
C301
47k
R312
4.7k
R314
0.22
C308
150
R307
1
C306
22
R429
R818
220k
1k
R820
47k
R313
100
R301
100
R302
J801
RKZ18B2KGP1
D806
47k
R309
47p
C326
RKZ18B2KGP1
D323
16V
47
C313
R308
0
BU_3.3V
DR_6V
BU_GND
VDD_3.3V
GN1G
D324
GN1G
D318
GN1G
D321
10V
C307
220
25V
47
C416
0
R300
R340
0
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
PA
N
E
L+
B
35
VP
36
CBU
37
BU+B
R819
1k
RKZ7.5B2KGP1
D805
2.2
C314
1000p
C323
6.3V
C309
220
6.3V
C403
220
C399
1
0
R400
0
R396
FB398
MM1836A33NRE
IC402
1
CONT
2
GND
3
NC
4
VOUT
5
VIN
DA2J10100L
D401
FB801
FB802
FB803
JL009
JL010
16V
3300
C334
JL012
JL013
1
C305
1
C327
1
C302
1000p
R310
0.47
C315
0.47
C317
0.47
C319
0.47
C321
0.47
C331
0.47
C330
C398 0.001
0.1
C335
0.1
C407
1
C402
16V
220
C387
C401
0.1
140uH
L301
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–
NC
NC
NC
AMP_REM
ACC
TELL_ATT
VCC
GND
C320
10
16V
470
C411
JL014
2.2uH
L395
JL503
JL504
JL015
JL016
R306 220
R303
220
R305
220
R304
220
LTC014EUBFS8TL
Q802
LTC044EUBFS8TL
Q801
LSCR523UBFS8TL
Q301
LSCR523UBFS8TL
Q803
R323
1k
1k
R325
R324
1k
1k
R326
47p
C364
47p
C365
47p
C366
47p
C367
C303
10
C802
1000p
C801
1000p
10k
R311
10k
R378
C311
47p
47p
C358
JL505
JL506
FB306
FB314
FB891
0
R899
DR_GND
FB890
A_GND
D_GND
BEEP
STB
DIAG
I2C_SCL
I2C_SDA
RESET
ACC
RCIN1
RCIN0
XM_RX
IC301
POWER AMP, REGULATOR
MAIN BOARD (1/5)
1
2
4
6
7
8
9
3
11
13
12
14
15
16
+3.3V REGULATOR
IC402
FU1
10A
32V
(CHASSIS)
BK301
IN
REMOTE
Q801 - 803
BATTERY CHECK
R833
100k
ACCESSORY DETECT
I
6
H
15
1
C
12
K
13
5
F
16
8
2
B
D
G
11
10
E
J
9
A
4
3
7
14
17
(GT525UR)
(GT475ER/GT475UR)
REAR RCH (+)
8
REAR RCH (–)
5
13
11
BATT
3
GND
14
REM OUT MAX0.4A
4
PW1
15
FRONT RCH (–)
1
6
FRONT LCH (+)
FRONT RCH (+)
REAR LCH (+)
7
9
16
2
REAR LCH (–)
12
ACC
10
FRONT LCH (–)
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
TO
CN301
CN301
TO
(Page 24)
(Page
26)
(Page
25)
CDX-GT475ER/GT475UR/GT525UR
CDX-GT475ER/GT475UR/GT525UR
24
24
4-5. SCHEMATIC DIAGRAM - MAIN Section (2/5) -
• See page 32 for IC Block Diagrams.
(3/5)
BOARD
4
MAIN
BOARD
1
(1/5)
MAIN
(4/5)
BOARD
5
MAIN
KEY
CN902
BOARD
A
IC B/D
8
(5/5)
BOARD
MAIN
13.8
0
0
0
0
4.2
8.4
4.2
3.3
3.3
8.4
0
4.2
4.2
3.3
2.5
2.3
8.4
0
0
0
13.8
13.8
4.2
4.2
4.2
0
0
0
0
0
0
0
4.2
4.2
4.2
4.2
4.2
4.2
4.2
4.2
4.2
4.2
4.2
4.2
4.2
4.2
4.2
40
39
38
37
36
35
34
7
6
5
4
3
2
1
33
32
30
31
8
27
28
29
9
10
11
12
13
14
24
17
25
26
23
22
21
20
19
18
15
16
BD3467FV-E2
IC401
BUS_LCH
BUS_RCH
NCO
NCO
TU_LCH
TU_GND
TU_RCH
AUX_LCH
AUX_GND
AUX_RCH
XM_LCH
XM_GND
XM_RCH
FP1
FN1
FN2
FP2
NCO
NCO
NCO
MUTE
I2C_SCL
I2C_SDA
GND
FIL
VCC(8.5V)
AU_OUT_RCH
AU_OUT_LCH
NCO
AU_IN_SUB
AU_IN_RL
AU_IN_RR
AU_IN_FL
AU_IN_FR
AU_OUT_FR
AU_OUT_FL
AU_OUT_RR
AU_OUT_RL
AU_OUT_SR
AU_OUT_SL
1k
R415
2.2k
R419
12k
R418
1k
R416
1
C436
1
C437
C100
0.1
0
R116
R406
0
12k
R417
RKZ6.8B2KGP1
D114
RKZ6.8B2KGP1
D115
D1
19
RKZ6.8B2KGP1
CL081
CL069
CL074
CL077
CL070
CL079
CL071
CL063
CL075
CL064
CL078
CL066
CL072
CL067
CL065
CL068
CL073
CL061
AU_GND
RF_ANT_IN
RF_GND
AUDIO_OUT_L
AUDIO_OUT_R
RSTN
SCL
SDA
+8.5V
POWER_GND
CN01
9
4
5
3
1
2
6
7
8
R432
10k
R433
0
J1
C499
1
R434
0
1
C10
16V
47
C11
4.7uH
L1
1
C15
0
R10
1k
R13
R102
0
JL011
C440
1000p
C439
1000p
C201
1
0.1
C414
C442
0.1
DM
DP
16V
10
C420
16V
10
C424
16V
10
C425
16V
10
C413
47k
R405
1
C438
C419
10
CL076
R470
0
R471
0
C158
1
2.2uH
L431
0
R426
LTA014EUBFS8TL
Q407
LTC014EUBFS8TL
Q409
1000p
C457
10k
R409
10k
R424
10k
R411
10k
R422
1000p
C105
R403
47k
R19
0
FB420
FB411
FB412
FB413
FB414
FB415
47p
C480
47p
C481
CAM003
CAM002
FB416
2.2
C422
C410
2.2
0
R490
0
R491
0
R492
0
R493
0
R494
0
R495
FB404
FB405
FB406
FB407
FB408
FB410
LTC014TUBFS8TL
Q401
LTC014TUBFS8TL
Q402
LTC014TUBFS8TL
Q403
LTC014TUBFS8TL
Q404
LTC014TUBFS8TL
Q405
Q406
LTC014TUBFS8TL
220
R407
220
R421
220
R423
220
R410
220
R404
0
R466
0
R465
0
R464
0
R463
0
R462
0
R442
0
R443
0
R444
0
R445
0
R446
R402
220
CN102
15P
1
GND
2
KEY_GND
3
AUX_L
4
AUX_R
5
AUX_GND
6
RE_0
7
RE_1
8
KEY_1
9
KEY_0
10
SIRCS
11
LCD_DATA
12
LCD_CE
13
LCD_CLK
14
ILL
15
PANEL_SW
AU_SUB_CH
AU_FR_CH
AU_RR_CH
AU_RL_CH
AU_IN_LCH
AU_IN_RCH
AU_FL_CH
AU_IN_RCH
AU_IN_LCH
KEY0
RE1
LCD_CE
I2C_SCL
AU_FR_CH
AU_FL_CH
AU_RR_CH
AU_RL_CH
AU_SUB_CH
I2C_SDA
LCD_DATA
NOSE_SW
SIRCS
KEY1
RE0
AU_IN_RCH
AU_SUB_CH
AU_RL_CH
AU_RR_CH
AU_FL_CH
AU_IN_LCH
AU_FR_CH
LCD_CLK
1000p
C446
MAIN BOARD (2/5)
8
7
4
2
6
9
1
3
27
25
24
20
26
21
22
23
IC401
ELECTRICAL VOLUME, INPUT SELECTOR
BUS1
TUX-DSP02
(TUNER UNIT)
Q401 - 406
MUTING
18
Q407, 409
MUTING CONTROL
(ANTENNA IN)
I
6
H
1
C
12
K
13
5
F
8
2
B
D
G
11
L
10
E
J
9
A
4
3
7
14
J401
L
AUDIO OUT
REAR/SUB
R
5P
CN1300
1
USB_SHIELD
2
USB_GND
3
D–
4
D+
5
V_BUS
FB130
0
L108
3
1
2
4
R109
0
R110
0
680
R131
680
R132
USB1
(Page 27)
(Page 31)
(Page 26)
(Page 23)
(Page 25)
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