Service manual

I103
MST5151LA
Video Image
Processor
32"TV/LCD FLAT
PANEL
INVERTER
SWITCHING
POWER
SUPPLY DC
AC 110~220V
INPUT
+24V for INVERTER
TO
BACKLIGHT
High Volt
N3250w-G LCD TV/Monitor Block Diagram
OSC.
24.576MHZ
X101
Backlight ON/OFF Control
2
D-SUB Input(P101) R,G,B,HS,VS
I105
DDR NT5DS4M32EG
OSC.
14.318MHz
X100
5VD
I107 SAA7117
Video Decoder
MA[0..11]
MD[0..31]
MCLK(+/-)
CKE RAS
CAS
SBA(0/1)
I118 Tuner LG
TAPE-S701D
TCVBS
SIF
AV (RCA)
S-Video
YPbPr(RCA)
I127
MSP3410G
(BBE)
Audio
Processor
I129 TPA3004D2
Audio AMP
AV / S-Video
PC / DVI
Lout Rout
L/R Speaker
RXEC(+/-)
Brightness Control
/RD
/WR
ALE
I102(TO-263)
1084K18
I2C BUS(MSDA,MSCL)
TV RF
signal from
antenna
I137(SOT252)
LM7808-8.0V
A V_8V for I127 MSP 34XX
G
Audio processor use
12V for I129 TPA3004D2 Audio AMP
RCA and SCART2
Audio L/R OUT
SWITCH( I136
AP9435M,Q105
MM3904 )
+24V
5VD
STB_5V
I140(TO263)
AP1084K33
I106(TO-223)
AP1117E3.3V
2.5V for I103 MST5151LA SCALER and I105 DDRI141(TO223
)
AP1117D25A
1.8V for I103 MST5151LA SCALER
5VD for I113 W79E632A1 MCU and I114 24C16 EEPROM
,I115 24C04 HDCP EEPROM
I118 TUNER ,I109 MM1501 CBVS SW,I110 PI5V330 SCART SW,I125 24LC16 EEPROM
I100 24C21 DVI EEPROM and I101 24C21 D_SUB EEPROM
I127 MSP 34XXG Audio processor and I135 AP9435M PANEL VCC use
SCART1 (AV, R G B)
YPbPr
SCART1 for TV only
Audio L/R OUT
Lout
Rout
EAR Phone JACK
OSC.
18.432MHZ
X106
3.3V for I103 MST5151LA SCALER
3.3V_S for I107 SAA7117 Video Decoder
I108(TO-223)
AP1117E1.8V
1.8V_VA for I107 SAA7117 Video Decoder
+12V
I114 24LC16
EEPROM ,
I115 24LC04
HDCP EEPROM
I113 W79E632
Microprocessor
OSC.
24.00MHZ
X103
I2C BUS(MSDA,MSCL)
/INT0
HWRESET
KeyPad
VDXA[0..7]
VCLK
SCART2
(SV,AV / R G B)
SCART1
I101 24LC21
DDC
EEPROM
DSCL
DSDA
I100 24LC21
DVI EEPROM
SCL-DVI
SDA-DVI
DVI Input(P100)
RXC,RX0,RX1,RX2,HPD_CAB
SCART1 for TV only
Video CBVS OUT
SCART2 Video CBVS OUT
SCART2
RXE0(+/-)
RXE1(+/-)
RXE2(+/-)
RXE3(+/-)
WE
DQM[0..3]
DQS[0..3]
Image
Audio
48
ViewSonic Corporation Confidential
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Do Not Copy N3250w-G
9. Block Diagram