AOC 919swa Service Manual
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Page 21
19 LCD Color Monitor AOC 919Swa
21
7.2 Power Board
R 821
1M 1/10W 5%
R816
10K 1/ 10W 1%
C 807
1uF
D 801 LL4148
R805
100R 1/ 10W 5%
R8245K 1 1/10W
R830
NC
OEM MOD EL
SizeRev
Date
Sheet
of
TPV MOD EL
PC B NAME
称爹
T P V ( Top Victory Electronics Co . , Ltd. )Key Component絬 隔 瓜 絪 腹
PW PC 9941LH D 1 2Custom
24 Monday , J une 29, 2009715G2824-2
OD M MOD EL 02.Inv erterG2824-2-X-X-4-090627919Swa
R828
6. 2M...
Page 22
19 LCD Color Monitor AOC 919Swa
22
ZD921
R LZ 22B12
R903
100K O HM 2W
L904
LL903
L
F B903
BEAD1
2
L905
L
O E M MO D EL
SizeRev
Date
Sheet
of
TP V MO D E L
PCB NAME
称爹
T P V ( Top Victory Electronics Co . , Ltd. )Key Component絬 隔 瓜 絪 腹
PW PC 9941LH D 1 2Custom
34 Monday , J une 29, 2009715G2824-2
O D M MO D E L 03. Adapt erG2824-2-X-X-4-090627919Swa
+16V+5V
C921
NC
-+
BD 901
GBU 408
2
1
3
4
VOL
C912
0....
Page 23
19 LCD Color Monitor AOC 919Swa
23
O E M MO D E L
SizeRev
Date
Sheet
of
TPV MOD EL
PC B N AME
称爹
T P V ( Top Victory Electronics Co . , Ltd. )
Key Component絬 隔 瓜 絪 腹
PW PC 9941LH D 1 2A
44 Monday , J une 29, 2009715G2824-2
OD M MOD EL 04. AUD IOG2824-2-X-X-4-090627919swa
IC with Heat-sink(90G6295-3)
IC601
APA2069J I TU LSHUTDOWN
1
BY PASS 2RIN- 3GN D 4GN D 5LI N - 6VOLUME 7SE/ BTL
8
LOU T-9VD D10LOU...
Page 24
19 LCD Color Monitor AOC 919Swa 24 8. PCB Layout 8.1 Main Board
Page 25
19 LCD Color Monitor AOC 919Swa 25
Page 26
19 LCD Color Monitor AOC 919Swa 26 8.2 Power Board
Page 27
19 LCD Color Monitor AOC 919Swa 27
Page 28
19 LCD Color Monitor AOC 919Swa 28 8.3 Key Board
Page 29
19 LCD Color Monitor AOC 919Swa 29 9. Maintainability 9.1 Equipments and Tools Requirement 1. Voltmeter. 2. Oscilloscope. 3. Pattern Generator. 4. DDC Tool with an IBM Compatible Computer. 5. Alignment Tool. 6. LCD Color Analyzer. 7. Service Manual. 8. User Manual.
Page 30
19 LCD Color Monitor AOC 919Swa
30
9.2 Trouble Shooting
9.2.1 Main Board
1. NO SCREEN APPEAR
No power
No power
Press power key and look if
the picture is normal
Please reinsert and make
sure the AC of 100-240 is
normal
Measure U404 Vout=3.3V
U405 Vout=1.8V
Reinsert or check the
power section
X401 oscillate waveforms
are normal...