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LCD TV
AT1921
Service manual
Acer AT1921 Service Manual page 46
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Table of Contents
Troubleshooting
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Table of Contents
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A
5VSB
Q1
1
8
2
7
3
6
R2
4
5
10k/6
C4
SI9435
2200pF/6
4
SB33B
R4
2.2K/6
C
3
R308
10k/6/NC
B
2
1
Q4
R354
4.7k/6
2
8201UP3_4
2N3904
SOT23
SYSTEM POWR
3
5VSB
CN1
L1
Bead_121_4A/8
+5V_IN
1
2
3
CE1
+
4
330uF/25V
5
6
+12V_CN
7
8
BL_ON/OFF
9
Dimming
L52
10
Bead_121_4A/8
C N_GND
CON10 2.54
MAIN CONNECTOR
2
R6
10k/6
4
URST#
R9
2
C7
Q5
220/6
2N3904
1
0.1uF/6
D1
PSM-A
SYSTEM RESER
A
B
VCC
+12V_IN
Q2
1
2
3
4
R1
C5
C6
10k/6
+
SI9435
0.1uF/6
10uF/25V
R3
2.2K/6
Q3
R352
4.7k/6
2
4
2N3904
SOT23
SYSTEM POWR
+12V_CN
L3
Bead_121_4A/8
CB96
CB1
CE47
+
330uF/25V
0.1uF/6
0.1uF/6
SB33B
SB33B
U1
CB5
CE4
+
1
NC
VCC
10uF/25V
0.1uF/6
2
NC
WP
3
NC
SCL
4
GND
SDA
24C16
SOIC8
SYSTEM EEPROM
R11
47k/6
B
C
+12V
+5V_IN
8
7
6
5
C1
C2
+
C3
R290
10k/6/NC
2200pF/6
0.1uF/6
10uF/25V
R291
2.2K/6/NC
C
3
B
2
1
Q26
R353
2
8201UP3_4
4
2N3904/NC
SOT23
+12V
+12V_IN
L2
Bead_121_4A/8
CB97
CB2
CE2
+
0.1uF/6
330uF/25V
0.1uF/6
AUDIO AMP POWER
SB33B
R15
20k/6
8
SYSROMWP
Q8
7
R328
10R/6
SCL
2N3904
6
R327
10R/6
S DA
SOT23
5
C211
C212
2
22P/6/NC
22P/6/NC
SYSTEM EEPROM
C
D
5VSB
Q25
1
8
2
7
3
6
4
5
C195
C196
C197
+
SI9435/NC
0.1uF/6/NC
10uF/25V/NC
2200pF/6/NC
C
3
B
2
1
4.7k/6/NC
Control_Power
7
EXTERNAL MCU POWER
DV33B
R309
+12VAUDIO
10k/6/NC
CE3
CB3
R10
+
PWM0
4
PWM0
0.1uF/6
47uF/16V
4.7k/6
PANEL BRIGHTNESS
2
3
4
5
MTH276D126
2
3
SB33B
4
5
MTH276D126
R310
10k/6/NC
R16
10k/6
SCL
GPIO10
4
S DA
R17
L : WP ENAB LE
URST#
10k/6/NC
H : WP DISABLE
Title
Size
Custom
Date:
D
E
DV33B
DV33B
R13
R12
10k/6
1k/6
BL_ON/OFF
R14
PWM1
Q7
2
4
PWM1
2N3904
SOT23
4.7k/6
PANEL BACKLIGHT
DV33B
R5
1k/6
R7 100R/6
R8 0R/6
Dimming
Q6
2
2N3904
SOT23
CB4
1uF/6
H1
H2
9
2
9
8
3
8
1
1
7
4
7
6
5
6
MTH276D126
H3
H4
9
2
9
8
3
8
1
1
7
4
7
6
5
6
MTH276D126
8201UP3_4
SCL
4,6,8,11
8201UP3_4
+12VAUDIO
SDA
4,6,8,11
+12VAUDIO
URST#
4
PROJECT :E9T-PV
POWER_RESET_EEPROM
Document Number
<Doc>
Tuesday, May 29, 2007
Sheet
2
o f
14
E
4
3
2
4
11,13
1
R e v
C3B
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