Read Sony CDX-GT420U / CDX-GT424U / CDX-GT427UE / CDX-GT470U / CDX-GT470US Service Manual online
CDX-GT420U/GT424U/GT427UE/GT470U/GT470US
CDX-GT420U/GT424U/GT427UE/GT470U/GT470US
24
24
RESET
MAIN
SECTION
A
13
15
95
1
2
2
100
94
4
SYSTEM CONTROL
IC501 (2/2)
USB POWER
CONTROL SWITCH
IC804
LCD DRIVE
IC901
KEYIN0
CL
CE
CE
LCD DATA
LCD CLK
LCD CE
2
1
BACK LIGHT
4
BLINK
KEYIN1
82 RE–IN0
81 RE–IN1
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
SWITCH
Q811
VOLTAGE
DETECT
Q810
1
2
3
4
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
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