Schematic Diagram - BenQ LCD G2020HDA Service Manual

20" LCD Color Monitor

Schematic Diagram

Main Board
CN201
1 CMVCC
2
3 CMVCC
4 CMVCC
5 BKLT-VBRI
DIM#
6 BKLT-EN
7 C_PANEL_INDEX
PANEL_ID#
8 Volume#
Volume#
9 Mute
Mute
CONN
Panel ID(3.3V PWM)
Back light
Dimming(3.3V PWM)
CN202
1
2
3
4
5
6
CONN ZD202 C209 ZD203 C201 ZD201
NC
NC 0.1uF/16V 0.1uF/16V
Near to Connect
MVCC
{4}
CMVCC
{4}
FB201
{4}
{4}
3
120
C202
C204
+
100UF25V
0.1uF/16V
'07-01-10 change to Elite
* BKLT-EN High ON(3.3V)
KEY0
KEY 0
KEY1
KEY 1
POWER_KEY #
POWER_KEY# {4}
LED_G
LED_R
C210
NC 0.1uF/16V
FB202
NC
VCC3
U201
2
VIN VOUT
AP1117E33LA C205 C203
+
100UF25V
0.1uF/16V
'07-01-10 change to Elite
VCC3
R202
4K7 1/16W
BKLT-EN R201
200 1/16W
C206
Q202
0.1uF/16V PMBS3904
{4}
{4}
T P V ( Top Victory
G2498-2A-AO-X-15-090209
絬 隔 瓜 絪 腹
Key Component 3.POWER
Date Monday , February 09, 2009
38
INV_ON# {4}
VCC3
R207 R208
'06-12-29-3 Change R207,R208 Value
120R 1/16W 120R 1/16W
from 470ohm to 120ohm
Q204
PMBS3906
R210 10K 1/16W
LED_R#
LED_R
R213 10K 1/16W
Q205
LED_G PMBS3906
Electronics Co . , Ltd. ) OEM MODEL
BenQ G2020HDA
TPV MODEL TA9SRKN8FWBQNN
PCB NAME 715G2498-2A-AO
Sheet 3 of 7
BenQ G2020HDA
{4}
LED_G# {4}
Size B
Rev 1.0
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