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Model
CDX-GT420U CDX-GT424U CDX-GT427UE CDX-GT470U CDX-GT470US
Pages
48
Size
5.32 MB
Type
PDF
Document
Service Manual
Brand
Device
Car Audio
File
cdx-gt420u-cdx-gt424u-cdx-gt427ue-cdx-gt470u-cdx-g.pdf
Date
PREV: Sony XM-GTR2022 Service Manual

Sony CDX-GT420U / CDX-GT424U / CDX-GT427UE / CDX-GT470U / CDX-GT470US Service Manual ▷ View online

CDX-GT420U/GT424U/GT427UE/GT470U/GT470US
21
4-7-2.  Operating hours
The display mode is switched by each rotation of [2/ALBM+] or 
[1/ALBM–] keys during the CD error information display mode.
Operating hours
Recency of information
1-5: 1 represents the latest.
Diag code
07: USB error information
    9 9 9 9
USB error info history 1 (latest)
Error description plus error details display
USB error info history 3
Operating hours display
USB error info history 3
Error description plus error details display
USB error info history 2
Operating hours display
USB error info history 2
Error description plus error details display
USB error info history 1 (latest)
Operating hours display
    9 9 9 9
      9 9
    9 9 9 9
      9 9
    9 9 9 9
      9 9
USB error info history 5
Operating hours display
USB error info history 5
Error description plus error details display
USB error info history 4
Operating hours display
USB error info history 4
Error description plus error details display
      9 9
    9 9 9 9
      9 9
    9 9 9 9
Ver. 1.1
CDX-GT420U/GT424U/GT427UE/GT470U/GT470US
22
MEMO
CDX-GT420U/GT424U/GT427UE/GT470U/GT470US
CDX-GT420U/GT424U/GT427UE/GT470U/GT470US
23
23
SECTION  5
DIAGRAMS
5-1.  BLOCK  DIAGRAM  – MAIN Section –
1 ANT
SCL
SDA
CDMON
CDON
ELECTRONIC VOLUME
IC401
J1
(ANTENNA)
TU1
(TUNER UNIT)
I2C BUS CONTROLLED POWER AMP/
MULTIPLE VOLTAGE REGULATOR
IC300
SYSTEM CONTROL
IC501 (1/2)
CN300
(FRONT)
(REAR)
(FRONT)
BATT
6 CD-LCH
5 CD-RCH
6
S-METER
7
TUN MUTE
93 VSM
5
QUALITY
9
RDS OUT
88 QUALITY
8
MUTE CON
75 TUATTIN
18 DAVN
BU+3.3V
AEP,UK,RU MODEL
87 RDS ON
20 CDM ON
51 CD ON
22 Z MUTE
11
VDD+5V
4
L-CH
3
R-CH
BU+3.3V
10
VCC+8.3V
86 TUATT
85 NSMASK
CD ON
CDM ON
CD L
CD R
4 TU-LCH
3 TU-RCH
CD-RCH
A ATT
TU-RCH
AUDIO+8.3V
AUDIO+8.3V
19
SAOUT
18
SADA
5
3
OUT FL+
OUT FL–
9
7
OUT RL+
OUT RL–
29
27
AMP REM
R-CH
ANT REM
37
AUDIO+B
35
VP
20
VP1
6
VP2
BU+B
31
33
SERVO+3.3V
MECHA+6V
34
PANEL+B
28
MUTE
2 SDA
AUDIO+8.3V
BU+5V
SERVO+3.3V
MECHA+6V
PANEL+B
4 SCL
SDA
SCL
16 BEEP
22 STB
25 DIAG
13
7
10
12
11
16
1
9
2
4
3
5
6
29
30
SCL
SDA
SCL
SA CLK
SA DATA
SA IN
SDA
SCL
SDA
59
56
VOLATT
ATT
29
I2C SCK
30
I2C SIO
BUIN
12 IN FL
FL+
FL–
RL+
RL–
FR+
FR–
RR+
RR–
AMP-REM
ANT-REM
ACC
17
SACLK
MUTE
Q470
MUTE CONTROL
SWITCH
Q491,492
19
42
SYSRST
RESET
SYSRST
55
ACC IN
ACCESSORY CHECK
Q702
BATT
AEP,UK,RU MODEL
OVER VOLTAGE
CHECK
Q605
LOW VOLTAGE
CHECK
Q601,602
MUTE
Q401
MUTE CONTROL
SWITCH
Q411,412
MUTE
Q440
MUTE
Q432
SA IN
SA DATA
83
SA IN
89
SADATA
SA CLK
90
SA CLK
D491
F901
R-CH
23
24
OUT–RL
OUT–RR
J652
R-CH
25
26
(SUB)
R-CH
22
OUT–FL
OUT–FR
(SUB)
AUDIO OUT
REAR
R-CH
L
R
21
SUBOUT–L
SUBOUT–R
D353
D602
BATT
D603
DISPLAY
SECTION
A
BATT
TUNER
 VDD+5V
REG
Q3
NOISE MASK
SWITCH
Q1
RDS+3.3V
SWITCH
Q50,51
RDS DEMODULATOR
IC50
15
E2PVDD
13
SCL
16
E2PSCL
17
E2PSDA
14
SDA
BU+5V
BU+3.3V
REG
IC681
11 IN RL
TEL ATT
54
TELATT
TELEPHONE ATTENATION CHECK
Q701
57
DIAG
58
AMPSTB
26
BEEP
AUX
J901
9 AUX-LCH
7 AUX-RCH
AUX-RCH
AUX-RCH
CD-RCH
TU-RCH
ZMUTE
44 WAKE UP
WAKE UP
36 MC RX
MC RX
35 MC TX
MC TX
23 VBUS ON
VBUS ON
Z MUTE
SYS RST
MECHA+6V
BU+3.3V
SERVO+3.3V
B/U CHECK
RXD
TXD
DR+6V
BU+3.3V
A+3.3V
CDON
CDMON
ZMUTE
WAKE UP
WAKE UP
SYSRST
BU IN
VBUS ON
VBUS ON
MC TX
MC RX
CD
MECHANISM
UNIT
(MG-101I)
(1/2)
11
SCL
15
INTN
16 MPX
XTO
XTI
12
SDA
SCL
SDA
1
VDDA
7
VDDD
10
9
X50
8.664MHz
BUIN
30
BATT
• Signal Path
• R-CH is omitted due to same as L-CH.
• Abbreviation
   RU: Russian model
J
: CD PLAY
K
: FM
L
: AUX
f
: AM/MW/LW/SW
K
K
K
K
K
K
K
K
K
K
K
K
K
J
J
K
L
L
K
f
K
(Page 24)
CDX-GT420U/GT424U/GT427UE/GT470U/GT470US
CDX-GT420U/GT424U/GT427UE/GT470U/GT470US
24
24
RESET
MAIN
SECTION
A
13
15
95
1
2
100
94
4
SYSTEM CONTROL
IC501 (2/2)
USB POWER
CONTROL SWITCH
IC804
LCD DRIVE
IC901
KEYIN0
CL
CE
LCD DATA
LCD CLK
LCD CE
2
1
BACK LIGHT
4
BLINK
KEYIN1
82 RE–IN0
81 RE–IN1
92 KEYACK1
43 RC IN1
91 KEYACK0
97 RC IN0
SIRCS
12 RESET
OSCOUT
OSCIN
X501
11.06MHz
63
64
62
DIMMER
DI
PANEL+B
BU+3.3V
KEY MATRIX
LSW907–917,
S901–906
10
11
XOUT
XIN
X502
32.768kHz
28
SYNC OUT
25
USB OVER
24
DOOR SW
BU+3.3V
FM(200k)
MW(10k)
FM(50k)
MW(9k)
S501
FREQUENCY
SELECTOR
27
USB ON
BATT
40
DD ON
(VOLUME)
PUSH ENTER/ SELECT
RE901
ROTARY
ENCODER
REMOTE CONTROL
SIGNAL RECEIVER
IC971
RESET
IC602
IN
V–BUS
OUT
4 EN
5 OC
2
•
3
6
•
7
•
8
LED DRIVE
Q801
S103
RESET
LCD
BACK PANEL
D807
L802
D/D CONVERTER
CONTROL SWITCH
IC805
CD
MECHANISM
UNIT
(MG-101I)
(2/2)
USB D+
USB D–
3 CLR
2 B
5
Q
D/D CONVERTER
VBUS POWER SWITCH
IC803
6
DRV
1 RC
J370
(REMOTE IN)
70 AREASEL2
E,IND,MX MODEL
LCD
BACK LIGHT
DRIVE
Q932
LCD901
LIQUID CRYSTAL
DISPLAY PANEL
DIMMER
SWITCH
Q931
USB POWER
SWITCH
Q807
USB POWER
CONTROL SWITCH
Q808
USB+7.3V
REG
Q806
USB+5V
SWITCH
Q811
VOLTAGE
DETECT
Q810
1
2
3
4
CN902
CN902
(USB)
LED951–953
(RING ILLUMINATION)
USB POWER
CONTROL SWITCH
Q809
D805
PANEL+B
PANEL+B
PANEL+B
LED941–946,LED951–953,
LSW909–917,
LED931
• Signal Path
• Abbreviation
c
: USB
IND: Indian model
 MX: Mexican model
c
c
5-2.  BLOCK  DIAGRAM  – DISPLAY Section –
(Page 23)
Ver. 1.1
Page of 48
Display

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