
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5
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3
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2
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1
1
D
D
C
C
B
B
A
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LCD Panel POWER DRIVER
LCD Backlight POWER DRIVER
WDR831
C
Backlight & LCD Power
B
22
27
Thursday, December 13, 2007
Title
Size
Document Number
Rev
Date:
Sheet
of
VCC_1542
LCD_ON_OFF
(14)
LCD_ON_OFF
(14)
LED_BRIGHTNESS (14)
GND_DC
GND_DC
GND_DC
GND_A
VDD_LCD
GND
GND
VCC5
VEE_LCD
VCC_LED
GND_DC
GND_DC
GND_DC
GND_DC
VIN_SYS
R351
100K/J/0603
L16
10UH/1.14A/D63LCB
Q36
RSR020P03
G
D
S
R634
0/J/0805
R352
100K/J/0603
D24
D-B140-13-F
A
K
Q50
RSQ035P03
1
3
4
5
2
6
C333
2.2U/25V/1206
C335
0.1U/50V/0603
FB34
1A/600OHM/0603
R496
10K/F/0603
FB33
1A/600OHM/0603
C423
1U/50V/0805
C337
2.2N/50V/0603
C261
0.1U/25V/0603
C336
10N/50V/0603
U24
MP1542
1
2
3
4
5
6
7
8
9
COMP
FB
EN
GND
SW
IN
FSEL
SS
GND_T
R281
4.7K/F/0402
C332
10U/35V/1210
L12
10UH/1.14A/D63LCB
R438
0/J/0603
C334
10U/35V/1210
C260
10U/10V/1206
R362
4.7K/F/0603
R358
10K/F/0603
R194
100K/J/0603
Q25
PMBS3904
B
E
C
Q35
PMBS3904
B
E
C
R439
165K/F/0603
R495
80.6K/F/0603
R349
200K/J/0603
Summary of Contents for PET831
Page 9: ...3 0 INSTRUCTION FOR USE ...
Page 15: ...4 0 MECHANICAL INSTRUCTION 19 Finally we will get the back cabinet ...
Page 21: ...5 0 TROUBLESHOOTING SYMPTOM NO SOUND FROM HEADPHONE ...
Page 24: ...6 0 OVERALL BLOCK DIAGRAM ...
Page 52: ...PET831 main board TOP Layer ...
Page 53: ...PET831 main board BOT Layer ...
Page 54: ...Eject KEY TOP 5 direction KEY TOP LCD Turn board TOP ...
Page 55: ...Eject Key BOT 5 direction key BOT LCD Turn board BOT ...
Page 56: ...TOP Key TOP Layer ...
Page 57: ...TOP Key BOT Layer ...