Read Sony CDX-GT480U / CDX-GT480US Service Manual online
CDX-GT480U/GT480US
CDX-GT480U/GT480US
16
16
4-2. BLOCK DIAGRAM – DISPLAY Section –
X402
32.768kHz
14
13
39
49
50
48
50
48
40
SYSTEM CONTROL
IC401 (2/2)
LCD DRIVER,LED CONTROL
IC901
KEYIN1
CLK LCD
CE
CE
LCD_SO
LCD_SCK
LCD_CE
KEYIN0
46 KEYACK1
11 RE-IN0
RE0
RE1
RE1
12 RE-IN1
XOUT
XIN
X401
7.92MHz
92
93 OSCOUT
7 NOSE_SW
OSCIN
63
64
62
DIMMER 2
BLINK 4
BACK-LIGHT 1
COM4
I
COM1
LCD901
LIQUID
CRYSTAL
DISPLAY
PANEL
5
|
50
•
55
•
60
51
|
54
SEG48
I
SEG1
DATA
PANEL+B
KEY MATRIX
LSW901,905–913,
S902–908
(VOLUME)
PUSH ENTER/SELECT
RE901
ROTARY
ENCODER
95 SIRCS
REMOTE
CONTROL
SIGNAL
RECEIVER
IC902
Q907
LED
DRIVER
Q901
LCD BACK LIGHT
DIMMER
CONTROL
Q902
LCD BACK
LIGHT
CONTROL
LED907,911,913-915,
922,924,925,930,931,
922,924,925,930,931,
LSW901,905-913
LED928,932,935
(RING ILLUMINATOR)
LED901
(LCD BACK LIGHT)
3
USB POWER
CONTROL SWITCH
IC503
99
SYNC OUT
24
USB OVER
21
USB ON
BATT
100
DD ON
VIN
VBUS
1
3
VOUT
D505
L502
DC/DC CONVERTER
CONTROL
IC502
CD
MECHANISM
UNIT
(MG-101Y)
(2/2)
USB D+
USB D–
USB D–
3 CLR
2 B
5
Q
DC/DC CONVERTER
IC501
6
DRV
1 RC
2
CONT
USB POWER
SWITCH
Q502
USB POWER
CONTROL
Q501
SWITCHING
REGULATOR
Q503
D510
USB OVER
CURRENT DETECT
Q504,505
1
3
2
3
2
VBUS
D+
D–
D–
4
CN902
(USB)
D502
34 RC IN1
45 KEYACK0
41 RC IN0
J801
(REMOTE IN)
• Signal Path
: USB
55
AREA SEL2
BU+3.3V
MY,TH MODEL
S402
FREQUENCY
SELECT
FM(200K)
AM(10K)
FM(50K)
AM(9K)
• Abbreviation
MY : Malaysia model
TH : Thai model
MY : Malaysia model
TH : Thai model
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