BenQ G920HDA, Service Manual

Page: 39 / 54

18.5” LCD Color Monitor BenQ G920HDA
39
DDC1_SCL {3}
DIM# {2}
IICSDA
RTD_SD3/SDI {5}
C410
0.1uF/16V
U403
NC
1
2
3
4
5
6
7
8
NC
NC
NC
VSS SDA
SCL
WC
VCC
POWER_KEY # R433 100R 1/16W
1
VCC3
Volume# {2}
IICSCL
R439
6K8 1/16W
R415
6K8 1/16W
2
X401
24mhz
1 2
Closed to MCU
R402
1K 1/16W
PPWR_ON# {6}
R437
3.9K OHM +-1% 1/16W
U401
RTD2122L-LF
1
2
3
4
5
6 7
8
1
7
1
5
4
1
4
0
3
9
3
8
3
7
3
6
3
5
3
4
3
3
1
9
28
29
20
21
22
23
24
25
26
27
1
6
9
10
11
12
13
14
1
8
30
31
32
4
3
4
2
44
45
46
47
48
P5.5/PWM5
DSCL2/P5.6
DSDA2/P5.7
R
S
T
ASCL1/P3.0/RXD
N
C
N
C
ASDA1/P3.1/TXD
V
S
S
X
O
V
C
C
P
1
.0
/T
2
P
1
.1
P
1
.2
P
1
.3
P
1
.4
P
1
.5
P
1
.6
P
1
.7
N
C
VSY NC
NC
P6.0/ADC0
P6.1/ADC1
P6.2/ADC2
P6.3/ADC3
P6.4
P6.5
P6.6/CLKO1
P6.7
X
I
P3.2/INT0
P3.3/INT1
P3.4/T0
P3.5/T1
P7.6/CLKO2
P7.7
N
C
NC
NC
NC
N
C
N
C
P5.0/PWM0
P5.1/PWM1
P5.2/PWM2
P5.3/PWM3
P5.4/PWM4
R401
3.9K OHM +-1% 1/16W
MCU_VCC
'06-11-24 D402 change
Value from BAT54 to
BAV70
R431
6K8 1/16W
Q401
PMBS3904
MCU_VCC
DSUB_V1
R412
4K7 1/16W
RTD_SCLK {5}
R407
N
C
WP
PANEL_ID#
R416
10K 1/16W
IICSDA
Mute
C404
NC
R435 100R 1/16W
R428 22R 1/16W
Volume#
R408 NC
+ C405
10UF50V
2007-1/18 change X401 to 75
Degree
2007-1/3 change ref from Y401
to X401
DDC1_SDA {3}
MCU_VCC
R424 1K 1/16W
2007-1-15 change R413, R414 from
4.7K to 2.2K
CMVCC
MCU_VCC
PPWR_ON#
R432 100R 1/16W
LED_G# {2}
R451
4
K
7
1
/1
6
W
R409 NC
C409
NC(22pF/16V)
MCU_VCC
IICSCL
RTD_SCLK
R430 100R 1/16W
R414
4
K
7
1
/1
6
W
D401
BAT54C(NC)
1
3
2
R454
1
K
1
/1
6
W
R406
N
C
Mute {2}
2006-11/7 Add pull high R451 to MVCC
,R453,R454 pull up MCU_VCC
C412
1uF 10V
R453
1
K
1
/1
6
W
BAT54C
CMVCC
R405
N
C
PANEL_VCC
R436
10K 1/16W
R422 100R 1/16W
MCU_VCC_S
INV_ON#
MCU_VCC
KEY 1
PANEL_ID# {2}
RTD_SD3/SDI
R420 100R 1/16W
KEY 1 {2}
LED_R#
MCU_VCC_S
Reserve for powerBoard
CMVCC=3V
T8RARPD8FWBUNN 1.0
BenQ G920HDA
B
5 7 Friday , Nov ember 28, 2008
715G2498-1E-AO
< 称称 >
5.MCU/RTD2122
G2498-1E-AO-X-9-081110
OEM MODEL Size
Rev
Date Sheet of
TPV MODEL
PCB NAME
称称
T P V ( Top Victory Electronics Co . , Ltd. )
Key Component
絬 隔 瓜 絪 腹
CRY STAR_OUT
C406
0.1uF/16V
DDC1_SCL
CRY STAR_OUT {5}
POWER_KEY # {2}
KEY 0
R404
10K 1/16W
U402
AZ431AN-AE1
R425
10K 1/16W
DSUB_V
R413
4
K
7
1
/1
6
W
R423 1K 1/16W
2006-12-8 change R437,R401 from 10K to 3.9K
MVCC
LED_R# {2}
R434 100R 1/16W
R427 NC/0R05 1/16W
D402
BAV70
R411
4K7 1/16W
R426 22R 1/16W
DSUB_5V
C402
NC
WP
DIM#
R438
3.9K OHM +-1% 1/16W
DSUB_CONNECT {3}
C403
0.1uF/16V
R410 NC
R403
3.9K 1/16W

2006-11/23 change R413-4, pull high pin
from DSUB_VCC ,DVI_VCC to MCU_VCC
R429 0R05 1/16W
KEY 0 {2}
C401
10pF
DSUB_V {3}
DSUB_CONNECT
DDC1_SDA
C411
10pF
INV_ON# {2}
LED_G#
2006-11/7 R423-R424
change from 100R to
1K
3