ViewSonic N2750w-1, N2750w-1M, VS10576-1M Service Manual
Service Manual
ViewSonic N2750w-1(M)
Model No. VS10576-1M
27” LCD TV
(N2750w-1M_SM Rev. 1a Apr. 2006)
ViewSonic® 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583
Copyright
Copyright © 2006 by ViewSonic Corporation. All rights reserved. No part of this publication may be
reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or
computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical,
manual or otherwise, without the prior written permission of ViewSonic Corporation.
Disclaimer
ViewSonic makes no representations or warr anties, either expressed or impl ied, with respect to the contents
hereof and specifically disclaims any warranty of merchantability or fitness for any particular purpose. Further,
ViewSonic reserves the right to revise this publication and to make changes from time to time in the contents
hereof without obligation of ViewSonic to notify any person of such revision or changes.
Trademarks
Optiquest is a registered trademark of ViewSonic Corporation.
ViewSonic is a registered trademark of ViewSonic Corporation.
All other trademarks used within this document are the property of their respective owners.
Revision History
Revision SM Editing Date ECR Number Description of Changes Editor
1a 04/04/06 Initial Release Sophia Kao
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TABLE OF CONTENTS
1. Precautions and Notices .................................
.....................................3
2. Service Tool & Equipment Required.....................................................4
3. Specifications........................................................................................4
4. Exploded View and Parts List................................................................8
5. Block Diagram.......................................................................................10
6. Schematic Diagrams.............................................................................11
7. Working Theorem................................................................................. 25
8. Wiring Diagram..................................................................................... 27
9. PCB Layout Diagrams..........................................................................28
10. Trouble Shooting Flow Chart..............................................................36
11. Adjustment.......................................................................................... 40
12. Recommended Spare Parts List.........................................................42
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1. Precautions and Notices
1.1. SAFETY PRECAUTIONS
This LCD TV is manufactured and tested on a ground principle that a user's safety comes first.
However, improper use or installation may cause damage to the LCD TV as well as to the user.
Carefully go over the following WARNINGS before installing and keep this guide handy.
WARNINGS:
This LCD TV should be operated only at the correct power sources indicated on the label on
!
the rear end of the LCD TV. If you're unsure of the power supply in your residence, consult
your local dealer or power company.
Use only the special power adapter that comes with this LCD TV for power input.
!
Do not try to repair the LCD TV yourself as it contains no user-serviceable parts. This
!
LCDTV should only be repaired by a qualified technician.
Do not remove the LCD TV cabinet. There is high-voltage parts inside that may cause
!
electric shock to human bodies, even when the power cord is unplugged.
Stop using the LCD TV if the cabinet is damaged. Have it checked by a service technacian.
!
Put your LCD TV only in a clean, dry environment. If it gets wet, unplug the power cable
!
immediately and consult your service technician.
Always unplug the LCD TV before cleaning it. Clean the cabinet with a clean, dry cloth.
!
Apply non-ammonia based cleaner onto the cloth, not directly onto the glass screen.
Keep the LCD TV away from magnetic objects, motors, TV sets, and transformer.
!
Do not place heavy objects on the LCD TV or power cord.
!
1.2. PRODUCT SAFETY NOTICE
Many electrical and mechanical parts in this chassis have special safety visual inspections and the
protection afforded by them cannot necessarily be obtained by using replacement components
rated for higher voltages, wattage, etc. Before replacing any of these components read the parts
list in this manual carefully. The use of substitute replacement parts which do not have the same
safety characteristics as specified in the parts list may create shock, fire, or other hazards.
1.3. SERVICE NOTES
1. When replacing parts or circuit boards, clamp the lead wires around terminals before
soldering.
2. When replacing a high wattage resistor (more than 1W of metal oxide film resistor) in circuit
board, keep the resistor about 5mm away from circuit board.
3. Keep wires away from high voltage, high temperature components and sharp edges.
4. Keep wires in their original position so as to reduce interference.
5. Usage of this product please refer to also user's manual.
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2. Service Tool & Equipment Required
1. SIGNAL GEN.
2. MULTIMETER
3. OSCILLOSCOPE
4. SCREW DRIVER
5. IRON
6. ABSORBER
7. SOLDER
8. DUMMY LOAD (5Ω/200W)
9. DVD PLAYER
3. Specifications
3.1. PRODUCT SPECIFICATIONS
LCD Panel 27" TFT
Power Management < 5W
(OFF MODE)
Displayable Resolution VESA 1366 x 768 max.
Pixel Dimension 0.4365(H)×0.4365(W)mm
LCD Display Color 16.7M Color Max. (8b it/co lor)
Viewing Angle CR≧10
Horizontal: -85°+85°
Vertical: -85°+85°
Contrast Ratio 1000 : 1 (typical)
Brightness 550 cd/m
Response Time 8ms (typical ,gray to gray )
Active Display Area 596.259mm×335.232mm
RF Tuner Input level: 0 ~ +15 dB mV
Rang: NTSC 55.25 to 801.25 MHz, 2-69 channels for Off-Air
and 2-125 Channeis for CATV
Power Voltage: 100~240 V
Consumption:150 Watts(Max.)
Speaker 10W×2
Compliance FCC,UL
Temperature Operating : 0°C~ +40°C
Storage : -20°C~+60°C
2
(typical)
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3.2. FACTORY SUPPORTING MODES
ITEM 1 2 3 4
TIMING
640× 480 60HZ 640× 480 67HZ 640× 480 75HZ 720× 400 70HZ
Pixel Rate 25.175MHZ 30.240MHZ 31.500MHZ 28.322MHZ
H TOTAL 31.778us 28.571us 26.667us 31.778us
H DISPLAY 25.422us 21.164us 20.317us 25.422us
H B-Porch 1.907us 3.175us 3.810us 1.907us
H Width 3.813us 2.116us 2.032us 3.813us
H Border 0.318us 0.000us 0.000us 0.318us
V TOTAL 16.683ms 15.000ms 13.334ms 14.268ms
V DISPLAY 15.253ms 13.714ms 12.800ms 12.710ms
V B-Porch 1.049ms 1.114ms 0.427ms 1.111ms
Vs Width 0.064ms 0.086ms 0.080ms 0.064ms
V Border 0.254ms 0.000ms 0.000ms 0.254ms
H/V Sync -/- -/- -/- -/+
Interlace No. No. No. No.
ITEM 5 6 7 8
TIMING
800× 600 56HZ 800× 600 60HZ 800× 600 72HZ 800× 600 75HZ
Pixel Rate 36.000MHZ 40.000MHZ 50.000MHZ 49.500MHZ
H TOTAL 28.444us 26.400us 20.800us 21.333us
H DISPLAY 22.222us 20.000us 16.000us 16.162us
H B-Porch 3.556us 2.200us 1.280us 3.232us
H Width 2.000us 3.200us 2.400us 1.616us
H Border 0.000us 0.000us 0.000us 0.000us
V TOTAL 17.778ms 16.579ms 13.853ms 13.333ms
V DISPLAY 17.066ms 15.840ms 12.480ms 12.800ms
V B-Porch 0.626ms 0.607ms 0.478ms 0.448ms
Vs Width 0.057ms 0.106ms 0.125ms 0.064ms
V Border 0.000ms 0.000ms 0.000ms 0.000ms
H/V Sync +/+ +/+ +/+ +/+
Interlace No. No. No. No.
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ITEM 9 10 11 12
TIMING
832× 624 74.5HZ 1024× 768 60HZ 1024× 768 70HZ 1024× 768 75HZ
Pixel Rate 57.280MHZ 65.000MHZ 75.000MHZ 78.750MHZ
H TOTAL 20.111us 20.677us 17.707us 16.660us
H DISPLAY 14.525us 15.754us 13.653us 13.003us
H B-Porch 3.910us 2.462us 1.920us 2.235us
H Width 1.117us 2.092us 1.813us 1.219us
H Border 0.000us 0.000us 0.000us 0.000us
V TOTAL 13.417ms 16.666ms 14.272ms 13.328ms
V DISPLAY 12.549ms 15.880ms 13.599ms 12.795ms
V B-Porch 0.784ms 0.600ms 0.513ms 0.466ms
Vs Width 0.060ms 0.124ms 0.106ms 0.050ms
V Border 0.00ms 0.000ms 0.000ms 0.000ms
H/V Sync -/- -/- -/- +/+
Interlace No. No. No. No.
ITEM 13
TIMING
1280 × 1024 60HZ
Pixel Rate 108MHZ
H TOTAL 15.630us
H DISPLAY 11.852us
H B-Porch 2.296us
H Width 1.037us
H Border 0.000us
V TOTAL 16.661ms
V DISPLAY 16.005ms
V B-Porch 0.594ms
Vs Width 0.047ms
V Border 0.00ms
H/V Sync +/+
Interlace No.
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3.3. D-SUB CONNECTOR
Connector pin assignments for VGA cable
The signal cable connector shall be a molded-over, shield twisted pair cable. T he cable shall be
1.8 meters long. The pin assignments shall be listed as below:
Connector pin assignments for DVI cable
DVI: 24 pins DVI connector is designed to match with DVI-D digital signal cable, the pin
assignment is as the following:
PIN D-SUB Connector
1 Red Video
2 Green Video
3 Blue Video
4 NC
5 GND
6 GNC
7 GND
8 GND
9 +5V for DDC
10 GND
11 NC
12 SDA
13 H-sync
14 V-sync
15 SCL
Pin Signal Assignment Pin Signal Assignment Pin Signal Assignment
1 TMDS RX2- 9 TMDS RX1- 17 TMDS RX02 TMDS RX2+ 10 TMDS RX1+ 18 TMDS RX0+
3 TMDS Ground 11 TMDS Ground 19 TMDS Ground
4 Floating 12 Floating 20 Floating
5 Floating 13 Floating 21 Floating
6 DDC Clock 14 +5V Power 22 TMDS Ground
7 DDC Data 15 Ground 23 TMDS Clock+
8 Floating 16 Hot Plug Detect 24 TMDS Clock-
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FIG.1
FIG.1
MAIN PCB ASS'Y
KEYPAD PCB ASS'Y
POWER PCB ASS'Y
NOTE.1
1F15
1F16
X3
1F17
1F18
X3
1F38
1F29
X2
1F25
1F30
1F31
X10
1F25
1F33
1F22
1F24
X6
V901
1F10
1F11
X2
1F11
X3
X3
1F11
1F11
X2
1F01
1F12
X4
1F06
X4
IR PCB ASS'Y
1F12
X6
1F12
X4
AUDIO PCB ASS'Y
1F28
X2
1F26
1F25
1F29
X2
1F19
X2
1F21
X4
1F21
1F13
X2
1F32
1F14
X3
5B02
X6
5B01
X4
5B03
2C01
2C05
2C03
2C04
2C06
X2
1F23
X4
1F23
X4
1F27
1F36
1F21
X2
1F05
1F12
1F39
X3
1F25
1F25
1F25
1F25
1F25
4. Exploded View and Parts List
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ViewSonic Model Number: VS10576-1M
Rev: 1a
Serial No. Prefix: PJL
Item ViewSonic P/N Ref. P/N Description Q't
y
1F01 C-00001791 2603307683 BEZEL ASS’Y JC278 ABS 94V0 BLACK #4001 1 1
1F05 N/A 2044266501 FUNCTION KEY JC278 ABS 94V0 AL-PLATE POWER 1 1
1F06 M-SCW-0824-0285 2084730082 SCREW,BND T+ M3X8(BND T+) 4 4
1F10 N/A 2071971300 METAL FITTG JC278 SECC t=1.0mm FOR PANEL 1 1
1F11 N/A 2080005200 SCREW,SPE M3*3 TYPE I FOR HS PANEL NI 10 10
1F12 M-SCW-0824-0811 2080003700 SCREW,SPE 1SZZTER001A M3*6LMSWR17/FZMY1 14 14
1F13 N/A 2072050400 METAL FITTG-I/O JC278 SECC t=1.0mm IO MAIN(U) 1 1
1F14 N/A 2083730108 SCREW,BND T+ M3X10,T24,F,NI 3 3
1F15 N/A 2072050500 METAL FITTG-I/O JC278 SECC t=1.0mm IO SIDE(U) 1 1
1F16 N/A 2082340102 SCREW,CSK+ SCREW F M4X10 (CSK+) 3 3
1F17 N/A 2027259402 DUST COVER JC278 ABS 94HB BLACK #4001 1 1
1F18 N/A 2083730108 SCREW,BND T+ M3X10,T24,F,NI 3 3
1F19 N/A 2071971400 METAL FITTG JC278 SECC t=1.0mm FOR SPK 1 1
1F21 M-SCW-0824-0285 2084730082 SCREW,BND T+ M3X8(BND T+) 8 8
1F22 N/A 2071870300 BRACKET,FIX JC278 Aluminum 1 1
1F23 N/A 2082740122 SCREW,BND+ M4X12 (BND+) 8 8
1F24 N/A 2082340102 SCREW,CSK+ SCREW F M4X10 (CSK+) 6 6
1F25 M-SCW-0824-0811 2080003700 SCREW,SPE 1SZZTER001A M3*6LMSWR17/FZMY1 8 8
1F26 N/A 2027259002 DUST COVER JC278 ABS 94HB BLACK #4001 1 1
1F27 N/A 2044266601 FUNCTION KEY JC278 ABS 94V0 AL-PLATE FUNCTI 1 1
1F28 M-SCW-0824-0285 2084730082 SCREW,BND T+ M3X8(BND T+) 2 2
1F29 M-SCW-0824-0811 2080003700 SCREW,SPE 1SZZTER001A M3*6LMSWR17/FZMY1 11 11
1F30 N/A 2071671000 SHIELD PLATE JC278 SECC t=1.0mm 1 1
1F31 N/A 2082340102 SCREW,CSK+ SCREW F M4X10 (CSK+) 10 10
1F32 N/A 2083630068 SCREW FMS+ M3X6,M,S-TITE,F,NI 2 2
1F33 N/A 2080040062 SCREW,SPE M4*8 PMS-3/W 1 1
1F36 N/A 2072459100 INSULATOR PC FR700 180X130 SONY T4000 1 1
1F38 N/A 2071871100 BRACKET,FIX JC278 SECC T=0.8mm FOR SWITCH 1 1
1F39 M-SCW-0824-0811 2080003700 SCREW,SPE 1SZZTER001A M3*6LMSWR17/FZMY1 3 3
2C01 C-00001790 2022262602 CABI BACK JC278 ABS 94HB BLACK #4001 1 1
2C03 N/A 2027259202 DUST COVER JC278 ABS 94HB BLACK #4001 1 1
2C04 N/A 2027259302 DUST COVER JC278 ABS 94HB BLACK #4001 1 1
2C05 N/A 2027259102 DUST COVER JC278 ABS 94HB BLACK #4001 1 1
2C06 N/A 2082740122 SCREW,BND+ M4X12 (BND+) 2 2
5B01 C-00001876 2071870401 BRACKET,FIX JC278 BASE ALUMINUM BLACK 4001 1 1
5B02 PL-PD-0714-0069 2039802303 FOOT PAD VA520 CR420x φ 16.5x5.8 BLACK 6 6
5B03 N/A 2082750402 SCREW,BND+ M5X40,M,P,ZN-CC 4 4
EXPLODED PARTS LIST (N2750w)
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TV Tuner
Philips FQ1236/F H-3
TV Sound
Processor
Micronas MSP3445/
MSP3425
Audio Amp
YAMAHA YDA135
MUX
HEF 4052BT
Video Decoder
Trumpion
T0956
Video SW
TS5V330/ADG774 ADC
AD9883KST
SDRAM
2Mx32x3
K4S643232H
IR Receiver
Keypad Control
EEPROM
24C16
MCU
128K
Scaler
w/ de-interlace
trumpion
p.HD (t0932)
LVDS Tx
PC Audio In
YPbPr Audio In
AV Audio In
TV
AV
Audio Out
L+R L+R
VGA input
CCIR656
RGB 24bits
A port
B port
I2C Control
To Panel
ANT
DVI+HDCP interface
SiI169
YPbPr
S-video
YCbCr W/3D-COM,C.C&V-CHIP
SDRAM
1Mx16
M12L16161A
POWER
SUPPLY
To INVERTER +24V
To main board +12V
DC to DC
+5V
+5V
+3.3V
+2.5V
+12V
Earphone Amp
TI TPA6110A2
EARPHONE
STK6012
5. Block Diagram
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VCC=+5V
ION_OFF
IADJ
IADJ
ION_OFF
PANELPWR11
BACKLITn11
PHDPWM08
TVM_PWRp
11
TVM_PWRp
11
SYS_PD11
Vpnl
VCC
P
VCCV
VCC
+3V3
VCCV
VCCV
VCCV
P
+12VIN
+12VIN
VCCV +3V3
+12V
VCC
P
+12VIN
VCC
+2V5
+2V5
+2V5S
VCC
+3V3
VCC
+3V3
+3V3S
+5VS
R269NCR270
NC
L182 3.5X9X0.8
L1813.5X9X0.8
C105100n
D101
MS22
1 2
I101
SAKEN/8050SD
1
3
5 2
4
VIN
GND
ON/OFF OUTPUT
FEEDBACK
L104 40uH
C107100n
Q104
MMBT3904
1
3
2
C111
100n
C121
NC
R101
NC/0R
R102
NC/0R
L107
CHOKE
P101
CON10
1
2
3
4
5
6
7
8
9
10
C106
1500uF/10VLESR
C101
1000uF/16V
R103
NC/0R
C110100n
C113
NC
C115
1500uF/10VLESR
I104
LM1084/3V3/TO263
3 2
1
VI VO
ADJ
R116 NC
R104
10K
R117
0R
C118
47uF/16V
C119
220uF/16V
R111
4K7
C116100n
L108 40uH
I103
SAKEN/8050SD
1
3
5 2
4
VIN
GND
ON/OFF OUTPUT
FEEDBACK
D103
MS22
1 2
C114100n
R509 0R
Q111
SI9933ADY
1
2
3
4 5
6
7
8
S1
G1
S2
G2 D2
D2
D1
D1
R272
10K
4
Q113
AP9620M
4
7
123
865
Q105
MMBT3904
1
3
2
Q112
MMBT3904
1
3
2
C117
330p
R106
10K
R115 4K7
R114 4K7
R105
2K2
R118 NC
R108 4K7
Q102
MMBT3904
1
3
2
C112
47uF/16V
R124
10K
R121
4K7
L101
CHOKE
L106
BEAD/80R
R107
2K2
R123NC
Q106
MMBT3904
1
3
2
Q103
MMBT3904
1
3
2
R110 4K7
R109
150R/0805
4
Q101
FDS9435
4
7
123
865
R122
4K7
R271 4K7
R273 4K7
C574
330p
P126
4 HEADER
1
2
3
4
R274
NC
R268
10K
R267 4K7
R275 4K7
Q110
MMBT3904
1
3
2
6. Schematic Diagrams
6.1 DC-Power
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SiI1161 USE ONLY SiI1161 USE ONLY
RX1-
RX0-
RXC+
RX1+
DVI_DET
RX2RX2+
RXC-
DFP5V
RX0+
DVI_VCC
AIB1
AIB4
AIR2
RX0+
AIR0
RX1+
AIB3
AIR6
RX1-
AIB6
AIB2
AIG7
AIB0
AIR7
AIR1
RX2-
AIG2
RX2+
RXC+
AIB7
AIG0
AIR3
DVI_AVCC
AIR4
AIB5
AIG4
AIG1
RXC-
RX0-
AIG3
AIG5
AIR5
AIG6
DVI_SDA
DVI_SCL
STDRI
OCKINV
DVI_OVCC
DVI_AVCC
DVI_SDA
DVI_SCL
DVI_SDA
DVI_SCL
OCKINV
STDRI
DVI_DET 11
AIB[0..7] 6,8
AIG[0..7] 6,8
AIR[0..7] 8
DVI_SCDT 11
DVI_DE 8
DVI_PDn11
DVI_CLK 8
DVI_HS 8
DVI_VS 8
VCC
VDDCD
+3V3
+3V3
+3V3
+3V3
+3V3
VDDCD
VDDCD
+3V3
+3V3
R512
4K7
R129
NC
C135100n
R133 0R
R131 0R
C125100n
C134100n
L111
BEAD/200R
C132100n
C130100n C124100n
R139 0R
R12810K
RP02 47RX4
1
5
2
6
3
7
4
8
I106
M24LC21
1
2
3
45
6
7
8
PRE
E1
E2
VSSSDA
SCL
/WC
VCC
RP01 47RX4
1
5
2
6
3
7
4
8
+
C13310uf/50V
C131100n
P105
DVI_29pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
TX2TX2+
TX2/4GND
TX4TX4+
DDC_CLK
DDC_DATA
CRT_Vsync
TX1TX1+
TX1/3GND
TX3TX3+
+5V/50mA
GND
HTPLG
TX0TX0+
TX0/5GND
TX5TX5+
TXC_GND
TXC+
TXC-
Red
Green
Blue
CRT_Hsync
AGND
R126
4K7
RP04 47RX4
1
5
2
6
3
7
4
8
RP05
47RX4
1
5
2
6
3
7
4
8
RP06 47RX4
1
5
2
6
3
7
4
8
D105
1N4148
1 2
C141
NC
R125 510R
R127
4K7
RP03
47RX4
1
5
2
6
3
7
4
8
ODD REDODD GREENODD BLUEEVEN REDEVEN GREENEVEN BLUE
I105
SII169
10
11
12
13
14
15
16
17
20
21
22
23
24
25
26
27
30
31
32
33
34
35
36
37
49
50
51
52
53
54
55
56
59
60
61
62
63
64
65
66
69
70
71
72
73
74
75
77
44
46
48
47
40
41
42
100
4
1
7
3
9
2
90
91
85
86
80
81
93
94
96
99
6
38
67
5
39
68
18
29
43
57
78
19
28
45
58
76
82
84
88
95
79
83
87
89
92
97
98
8
QE0
QE1
QE2
QE3
QE4
QE5
QE6
QE7
QE8
QE9
QE10
QE11
QE12
QE13
QE14
QE15
QE16
QE17
QE18
QE19
QE20
QE21
QE22
QE23
QO0
QO1
QO2
QO3
QO4
QO5
QO6
QO7
QO8
QO9
QO10
QO11
QO12
QO13
QO14
QO15
QO16
QO17
QO18
QO19
QO20
QO21
QO22
QO23
ODCK
DE
HSYNC
VSYNC
CTL1/KSCL
CTL2/KSDA
CTL3
OCKinv/SCL
PIXS
RESETp
STAG_OUT
SDA
PDOn
PDn
RX0+
RX0RX1+
RX1RX2+
RX2RXC+
RXC-
EXT_RES
RSVD
VCC1
VCC2
VCC3
GND1
GND2
GND3
OVCC1
OVCC2
OVCC3
OVCC4
OVCC5
OGND1
OGND2
OGND3
OGND4
OGND5
AVCC1
MODE
AVCC2
AVCC3
AGND1
AGND2
AGND3
AGND4
AGND5
PVCC
PGND
SCDT
R141
10K
D104
1N4148
1 2
C140
NC
C126100n
C142
10p
L109
BEAD/200R
C122
100n
L113
BEAD/200R
C143
100n
+
C12910uf/50V
R134 10R
R136 10R
R132 10R
R145
NC
R137 100R
R143
NC
R135
10K
R140 NC
R138 NC
C138100n
C137100n
+
C12710uf/50V
+
C13910uf/50V
C128100n
R130 10R
+
C12310uf/50V
L110
BEAD/200R
L112
BEAD/200R
C136100n
R142 NC
R144 NC
R146NCR147
NC
6.2 DVI
ViewSonic Corporation Confidential - Do Not Copy N2750w-1
12
SlaveAddr: 0x98
YPbPr-Y
YPbPr-Pb
YPbPr-Pr
YPbPr
input
BIR7
BIR6
BIR5
BIR4
BIR3
BIR2
BIR1
BIR0
BIG7
BIG6
BIG5
BIG4
BIG1
BIG2
BIG3
BIG0
BIB7
BIB6
BIB5
BIB4
BIB1
BIB2
BIB3
BIB0
VSYNC
Dsub_SCL
Dsub_SDA
VSYNC
HSYNC
Dsub_SCL
Dsub_SDA
VSYNC
Dsub_SDA
HSYNC
Dsub_SCL
HD_RIN
HD_GIN
HD_BIN
HD_PY
HD_GIN
HD_RIN
PC_G
PC_R
HD_PB
HD_BINPC_B
HD_PRHD_Y
HD_PR
HD_PB
HD_Y
HSYNC
Dsub_SDA
Dsub_SCL
VSYNC
USBDP
USBDM
5V_DCC
VGA_DET
PC_B
PC_R
PC_G
HD_COAST8
HD_RGHS8
SCL4,5,6,7,8,11
SDA4,5,6,7,8,11
BIG[0..7] 7,8,11
BIR[0..7] 8
BIB[0..7] 7,8,11
HDTV_CLK 8
HDTV_HS 8
HDTV_CS 8
VGA_DET 11
GHSYNC 8
GVSYNC 8
DDCSCL 11
DDCSDA 11
USBDP 11
USBDM11
HD_SEL11
VA_PLL
VADA
VAD_D
VCC
VAD_D
VADA
VA_PLL
VDDCA
5V_DDC
5V_DDC
+3V3
VA_PLL
VDDCA
VCC
VCC
R165 47R
R168 47R
I108
M24LC21
1
2
3
45
6
7
8
PRE
E1
E2
VSSSDA
SCL
/WC
VCC
R148
4K7
R150
100R
D107
1N4148
12
R149
4K7
C148 47n
R173
NC
R163 10R
C366
47p/ESD
C367
47p/ESD
C368
47p/ESD
C369
47p/ESD
P106
15-pin D-SUB connector
8
7
6
5
4
3
2
1
9
10
11
12
13
14
15
L119 BEAD/80R
R167 100R
R1774K7
R175 100R
R172 100R
C16647p
C167
100p
R174 100R
D106
1N4148
1 2
L118 BEAD/80R
L117 BEAD/80R
C161
22p/ESD
C159
22p/ESD
C160
22p/ESD
R155NC
R1764K7
L123
BEAD/80R
L121
BEAD/80R
R18075R
C185
22p/ESD
C163
47uF/16V
L122
BEAD/80R
R159 22R
C179
22p/ESD
C144
100n
R170
75R
R17875R
C146100n
R161
1K5
R169
75R
R17975R
C175100n
C192
22p/ESD
C176100n
C171100n
C164100n
C165100n
C172100n
C169100n
P107
RCA JACK 1X3
1
2
3
4
5
6
C170100nC177100n
C178100n
C186100n
C187100n
C188100n
C189100n
C190100n
C191100n
R166 100R
I109
AD9883KST-110
54
48
43
49
38
30
31
29
58
37
33
2627394245465152596234351122236978
79
1102021242528323640414447505360616368
80
70
71
72
73
74
75
76
77
2
3
4
5
6
7
8
9
12
13
14
15
16
17
18
19
67
66
64
65
57
56
55
Rain
Gain
Bain
SOGIN
CLAMP
HSYNC
VSYNC
COAST
REF
MIDSCV
FILT
VDVDVDVDVDVDVDVDVD
VD
PVD
PVD
VDD
VDD
VDD
VDD
VDD
VDD
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
R7
R6
R5
R4
R3
R2
R1
R0
G7
G6
G5
G4
G3
G2
G1
G0
B7
B6
B5
B4
B3
B2
B1
B0
DATACLK
HSOUT
VSOUT
SOGOUT
SDA
SCL
A0
L114 BEAD/200R
C181100n
C182100n
C183100n
C184100n
C145
100uF/16V
L115 BEAD/200R
RP11 47RX4
1
5
2
6
3
7
4
8
RP12 47RX4
1
5
2
6
3
7
4
8
RP10 47RX4
1
5
2
6
3
7
4
8
RP9 47RX4
1
5
2
6
3
7
4
8
RP7
47RX4
1
5
2
6
3
7
4
8
RP8 47RX4
1
5
2
6
3
7
4
8
R164 100R
R153 100R
R154 820R
R152 100R
R158
3K3
L116
BEAD/200R
+
C155
470uF/16V
R157NC
C152
22p
R151 100R
C153
22p
C162
10p
R171
75R
C174
47uF/16V
L120
BEAD/200R
I110
PI5V330
2
3
4
5
6
7
11
10
9
14
13
12
16
8
1
15
S1A
S2A
DA
S1B
S2B
DB
S1C
S2C
DC
S1D
S2D
DD
VCC
GND
IN
EN
C173100n
C370
47p/ESD
C371
47p/ESD
C372
47p/ESD
C373
47p/ESD
C561
100uF/16V
R444
10K
R443
47K
C149 47n
R156NC
R160 22R
R162NC
C180
100uF/16V
C150 10n
C157NC
C158NC
C156
39n
C154 3n9
C168
100uF/16V
I107
LT1117-3V3
3
1
2
VI
GND
VO
C147 47n
C151
22p
6.3 VGA/YPbPr
ViewSonic Corporation Confidential - Do Not Copy N2750w-1
13
TV_TUNER FQ1236MK3 ONLY
AND MOVE S_VIDEO TO
VIDEO DECODER PAGE
YPbPr-Audio-L
YPbPr-Audio-R
SCL
SDA
VFOUT
AFOUT
TSDA
TV_2ndF
TSCL
1CVBS_TV
I_AFL
I_AFR
I_AFL
I_AFR
SCL 3,5,6,7,8,11
SDA 3,5,6,7,8,11
1TV_AFmono 5
1TV_2ndF 5
AV1_AFR5
AV1_AFL5
AF_SEL011
AF_SEL111
HD_AFL5
AV_AFR 5
AV_AFL 5
HD_AFR5
1CVBS_TV 6,7
+5VS
AGND AGND
AGND AGNDAGND
+12V
+12V
+12V
+12V
+12V
+5VS
P108
RCA JACK 1X2
1
2
3
R187100KR199100K
R200100K R188100K
R197100K R185100K
R186100KR198100K
R208 10K
R210 10K
Q108
MMBT3904
1
3
2
R488
56R
L157 3.3uH
C386
330p
R190 100R
C203
68n
R209
1K
R207
NC
L126
BEAD/200R
I111
FQ-1236MK3
2
3
4
5
6
11
12
13
14
9
7815
16
1
10
NC/VTout
Vb(+5V)
SCL
SDA
AS
2ndIFout
CVBSout
VIF(+5V)
AFout
AF-R
TH1
TH2
TH3
TH4
NC/AGC
AF-L
+
C202
10uF/50V
R189 100R
L125
BEAD/200R
C201
330p
R205
18R
L128
BEAD/200R
L127
BEAD/200R
R201 22R
R182100K
I113
HEF4052D
12
14
15
11
1
5
2
4
6
10
9
13
3
16
8
7
X0
X1
X2
X3
Y0
Y1
Y2
Y3
/INen
A
B
X
Y
VDD
VSS
VEE
R194100K
R206 10K
R184100K
Q107
MMBT3904
1
3
2
R196100K
R202 NC
R183100K
R203 0R
+
C198 10uF/50V
+
C197 10uF/50V
R195100K
R204 10K
R181100K
C196
47uF/16V
C199
47uF/16V
C200100n
C195100n
C194
100n
R193100K
+
C204
10uF/50V
L130
BEAD/600R
C205
100p
+
C207
10uF/50V
R212 15K
C209
100p
C206
100p
R211 15K
L129
BEAD/600R
C208
100p
6.4 TV-Tuner
ViewSonic Corporation Confidential - Do Not Copy N2750w-1
14
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