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Service Manual
Power part---5V+3.3V+1.8V+Vlcd
ESD_5V
ESD_5V
CMVCC
D403
5, 6
CMVCC
BAT54C
CN404
1
SM340A
2
D402
3
CMVCC
4
CMVCC
5
BKLT-VBRI
R450
NC
6
BKLT-EN
NC(R0402)
7
C_PANEL_INDEX
8
Volume
9
Mute
CONN
VCC3.3
R441
1K 1/16W 5%
R442
BKLT-VBRI
adj_BACKLIGHT
100R 1/16W 5%
2008/01/14
BAT99 : If 0.05A,VF=1.0V
BAV70 : If 0.05A,VF=1.0V
5
It's need to use Low Dropout Regulator.
DSUB_5V
DSUB_5V 5
D401
NC
VCC3.3
R437
CMVCC1
10K 1/16W 5%
CMVCC1
5
BKLT-EN
R449
Q406
NC
2N3904S-RTK/PS
PANEL_ID#
5
C425
Mute
5
NC
VCC3.3
VCC3.3
R446
NC
Volume
Q408
2N3904S-RTK/PS
5
R448
4K7 1/16W 5%
Due to LG doen't request PC'99 Function.
VCC3.3
R439
10K 1/16W 5%
on_BACKLIGHT
5
R440
4K7 1/16W 5%
CMVCC1
MVCC
R447
10K 1/16W 5%
+
C426
100UF25V
Volume#
5
U404 can use package 232 or 252.
T P V ( Top
Victory
Electronics
G2904-2-2-IO-1-090120
絬 隔 瓜 絪 腹
Key Component
05.Power
Tuesday , January 20, 2009
Date
17
D401
R458
LG
NC
0Ohm 1/16W
OTHER
BAV99
NC
VCC3.3
2
3
Q410
VCC1.8
MMBT2907AK
2
3
Q409
MMBT2907AK
C432
C423
+
5
VCTRL
0.1uF/16V
100UF25V
FB403
NC
VCC3.3
3
VIN
2
VCC3.3
VOUT
1
ADJ(GND)
C428
0.1uF/16V
U404
C422
+
C427
AP1117D33LA
0.1uF/16V
100UF25V
Co . , Ltd. )
OEM MODEL
IO A19
TPV MODEL
CBPCRM5D1Q1J
PCB NAME
715G2904-2-2
Sheet
7
of
7
AOC831S
VCC1.8
5
4, 5
Size
B
Rev
-2-2
<称爹>
称爹
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