Viewsonic N1750W Service Manual

Service Manual

LCD TV N1750w-1

Model No. VS10621

ViewSonic

(N1750W-1_SM_- Rev. 1 – January 30, 2005)



381 Brea Canyon Road, Walnut, California 91789 USA - [phone]

Preface

Copyright © ViewSonic Corporation, 2004. All rights reserved.

Macintosh and Power Macintosh are registered trademarks of Apple Computer, Inc.

Microsoft, Windows, Windows NT, and the Windows logo are registered trademarks of Microsoft Corporation in the United
States and other countries.

ViewSonic, the three birds logo, OnView, ViewMatch, and ViewMeter are registered trademarks of ViewSonic Corporation.

VESA is a registered trademark of the Video Electronics Standards Association. DPMS and DDC are trademarks of VESA.

Disclaimer: ViewSonic Corporation shall not be liable for technical, editorial errors, or omissions contained herein; nor for
incidental or consequential damages resulting from furnishing this material, or the performance or use of this product.

In the interest of continuing product improvement, ViewSonic Corporation reserves the right to change product specifications
without notice. Information in this document may change without notice. For the most recent version of this document, please check
www.viewsonic.com.

No part of this document may be copied, reproduced, or transmitted by any means, for any purpose without prior written permission
from ViewSonic Corporation.

Important safety information

1. Read these instructions.

2. Keep these instructions.

3. Heed all warnings.

4. Follow all instructions.

5. Do not use this apparatus near water.

6. Clean only with a dry cloth.

7. Do not block any of the ventilation openings. Install in accordance with the manufacturers instructions.

8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce

heat.

9. Do not defeat the safety purpose of the polarized or grounding type plug. A polarized plug has two blades with one wider than the

other. A grounding type plug has two blades and third grounding prong. The wide blade or third prong is provided for your safety.

When the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.

10. Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they

exit from the apparatus.

11. Only use attachments/accessories specified by the manufacturer.

12. Use only with a cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used,

use caution when moving the cart/apparatus combination to avoid injury from tip-over.

13. The TV should be operated only from the type of power source indicated on the label. If you are not sure of the type of power

supplied to your home, consult your dealer or local power company.

14. Unplug this apparatus during lightning storms or when unused for long periods of time.

15. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such

as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into apparatus, the apparatus has been

exposed to rain or moisture, does not operate normally, or has been dropped.

16. This product may contain lead or mercury. Disposal of these materials may be regulated due to environmental considerations.

For disposal or recycling information, please contact your local authorities or the Electronic Industries Alliance: www.eiae.org

17. Damage Requiring Service – The appliance should be serviced by qualified service personnel when:

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A. The power supply cord or the plug has been damaged; or

B. Objects have fallen, or liquid has been spilled into the appliance; or

C. The appliance has been exposed to rain; or

D. The appliance does not appear to operate normally or exhibits a marked change in performance; or

E. The appliance has been dropped, or the enclosure damaged.

18. Tilt/Stability – All televisions must comply with recommended international global safety standards for tilt and stability

properties of its cabinets design.

! Do not compromise these design standards by applying excessive pull force to the front,

or top, of the cabinet, which could ultimately overturn the product.

! Also, do not endanger yourself, or children, by placing electronic equipment/toys on the top of the cabinet. Such items could

unsuspectingly fall from the top of the set and cause product damage and/or personal injury.

19. Wall or Ceiling Mounting – The appliance should be mounted to a wall or ceiling only as recommended by the manufacturer.

20. Power Lines – An outdoor antenna should be located away from power lines.

21. Outdoor Antenna Grounding – If an outside antenna is connected to the receiver, be sure the antenna system is grounded so as

to provide some protection against voltage surges and built up static charges. Section 810 of the National Electric Cord,

ANSI/NFPA No. 70-1984, provides information with respect to proper grounding of the mats and supporting structure grounding

of the lead-in wire to an antenna-discharge unit, size of grounding connectors, location of antenna-discharge unit, connection to

grounding electrodes and requirements for the grounding electrode. See Figure below.

22. Objects and Liquid Entry – Care should be taken so that objects do not fall and liquids are not spilled into the enclosure

through openings.

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Table of contents

Table of contents …………………………………………………………………………………… 4
Revision list…………………………………………………………………………………….…. 5

1. Specifications …...............................................................................................…………...…..

1.1 General specifications ….......................................................................…………....…. 6

1.2 LCD TV description ..................................................……………….……...………….. 7

1.3 Interface connector ......................................................……………………….….....…. 7

1.4 D-Sub pin distribution ...............................................................…………...………….. 7

1.5 Factory preset display modes ....................................…………………………….....…. 8

2. Theory of operation.................................................................……………...…………………. 8

2.1 Video.............................………...................................................................………….... 8

2.2 Audio ...........................................................................................................………….... 9

2.3 Electrical .......................................................................................................…………... 9

3. Adjustment............................................................................................................…………..... 10

3.1 Front panel adjustment………………………………………………….……………… 10

3.2 How to use the menu…………………………………………………………………… 10

4. Assembly and disassembly procedure....................................................................…………..... 12

4.1 Disassembly .……………………………………………………………...……………. 12

5. Explode view…………………………………………………………………………………... 15

6. PCB layout……………………………………………………………………………………... 16

6.1 Main board…………………………………………………….……….……………… 16

6.2 Power board………………………………………………………………….………… 17

7. Main board IC descriptions……………………………………………………………………. 18

7.1 SPV302A…………………………………………………….……….………………… 18

7.1.1 General description ………………………………………………………………… 18

7.1.2 Block diagram ……………………………………………………………………… 18

7.1.3 List of pins and package …………………………………………………………… 19

7.1.4 IO-Trap ……………………………………………………………………………. 26

7.2 AD9883………………………………………………………………….………..…… 27

7.2.1 Description ………………………………………………………………………… 27

7.2.2 Block diagram ……………………………………………………………………… 27

7.3 VPC3230D.……………………………………….….………………………….…….. 28

7.3.1 Description ………………………………………………………………………… 28

7.3.2 Block diagram ……………………………………………………………………… 28

7.3.3 Pin functions …………………………………………….………………………… 28

7.4 UPD64083………………………………………..…………………………………….. 30

7.4.1 Description ………………………………………………………………………… 30

7.4.2 Block diagram ……………………………………………………………………… 30

7.5 TDA7266D..…………..………………………………………………………………...

7.5.1 Description ………………………………………………………………………… 31

7.5.2 Block diagram ……………………………………………………………………… 31

8. Block diagram ........................................................…………………………………….……...

9. Schematic diagram ….......................................................................………………….………..

9.1 Main board………………………………………………………………….………….

9.2 Power board………………………………………………………………….…………

6

31

32
33
33
47

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Revision list

Revision Date Modification Description

A00 Jan-30-05 Initial Release

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1. Specifications

1.1 General specifications

LCD Panel

TV Function

PC Input

Audio Output Audio Output: L / R

Power

Environment

Panel Tilt Forwards/Backwards/ Rotation -4° / +18° / ±25°

Dimension W x H x D (with stand) 560 x 340 x 233 (mm)

Weight (net) Kg (w/o Accessories) 6.8 Kg

OSD language English / French / Spanish

Table Stand Included
Wall Mount VESA 100 x 100 mm

Accessories

Item Specification

Screen Size 17” TFT-LCD Panel

Aspect Ratio 15:9

Resolution 1280×768 (WXGA)

Display Area 372mm×223mm

Pixel Pitch 0.291mm×0.291mm
Display colors 16.7 million
Contrast Ratio 600:1

Brightness 450cd/m2

Viewing Angle 170 (Horizontal)/170 (Vertical)
Response Time 12ms

Lamp Type/Life 50,000hr
Color Temperature Cool/Warm
TV Tuning System NTSC 181 Channel with Electronic PLL Tuner

Sound System MTS/SAP

Closed Caption, V-chip Yes

Color System NTSC

AV1 RCA×1 Audio L/R×1

AV2

Component YPbPr×1 Audio L/R×1

Signal Input Analog: D-Sub 15 pin (detachable cable)

PnP compatibility DDC 2B

Input frequency Analog: FH: 31.5KHz to 61KHz FV: 56Hz to 75Hz

Recommended Analog: 1280 x 768 (60Hz)

Input Audio Headphone Mini-jack for stereo (3.5ø)

Power Supply AC100V~120V, 50/60Hz

Power Consumption <70W

Operating Temp. + 0°C ~ + 40°C

Storage Temp. - 25°C ~ + 60°C

Operating Humidity. 10 % ~ 85 %

Remote Controller, Batteries (x2), AC Power Cord, D-sub Signal Cable, Audio line, User’s
Manual, QSG

RCA×1

S-Video RCA×1

Speaker (built-in): Two 5 watt speakers

Headphone Mini-jack for stereo (3.5ø)

Line Output (RCA L/R)

Audio L/R×1(Share) Video Inputs

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1.2 LCD TV description

The LCD TV will contain a main board (include audio), a switching power board (include an inverter board), an IR board and
a function keyboard. The main board and power board will house the flat panel to control logic I
control logic for LCD panel, DC-DC conversion to supply the appropriate power to the whole board and transmitting TTL
level signals into LCD Module to drive the LCD display circuit.

The inverter board will drive the 6 CCFLs (Cold Cathode Fluorescent Tube).
The function keyboard and Remote Control will provide the OSD control signal to the Main Board.

2

C bus, DDC, brightness

1.3 Interface connector

All signal connections to this product are via external connectors locating at the rear of the product. The specifications of these
connectors are listed in the following table.

External Connector Specification

AC-In AC Jack 3-male receptacle

RGB Input

Audio Input (L/R) RCA Jack (White/Red)
Audio Input 3.5 Mini Jack for PC Audio
Audio Output (R/L) RCA Jack (Red / White)
Headphone Output 3.5 Mini Jack
Composite Video RCA Jack (Yellow)
Component Video RCA jack (Red, Blue, Green)
S Video 4 Din Jack

Molded-over, shielded, 15-pin subminiature D male plug with75Ω impedance.
Compliance with PC 99 Color Theme. Refer to Appendix B for pin layout.

1.4 D-Sub pin distribution

Connect the 15-pin color display shielded signal cable to your signal system device and lock both screws on the connector to
ensure firm grounding. The connector information is as follow:

1

6

11 15

5

10

15 - Pin Color Display Signal Cable

PIN NO. DESCRIPTION PIN NO. DESCRIPTION

1. RED Video 9. NC

2. GREEN Video 10. Sync Ground

3. BLUE Video 11. RXD (for ISP)

4. TXD (for ISP) 12. Serial Data for DDC

5. Ground 13. HORIZ. SYNC

6. Ground-R 14. VERT. SYNC

7. Ground-G 15. Serial Clock for DDC

8. Ground-B

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1.5 Factory preset display modes

Horizontal Vertical

Mode Resolution

VESA VGA

SVGA

VESA XGA 1024x768 48.4 60

MAC16” 832x624 49.725 74.55
MAC19” 1024x768 60.24 75

SVGA CVT 1280x768 47.8 60

640x480 31.5 60

640x480 37.9 72

640x480 37.5 75
720x400 31.5 70
800x600 37.9 60
800x600 48.1 72
800x600 46.9 75

Nominal Frequency

(KHz)

Nominal Frequency

(Hz)

2. Theory of operation

This section describes the operation theory of the N1750W LCD TV.

2.1 Video

“Analog Device” AD9883 shall provide analog to digital converter for this product. Video decoder shall be provided by
“Micronas” with a model number of VPC3230, and the de-interlace of this product shall be provided by “Sunplus” with a Model
Number of SPV302. The following tables define this product’s video specifications.

Input Parameter Specification

CVBS Characteristics:
Video Amplitude Signal
DC Level Sync Pulse:
S-Video Characteristics:
Video Amplitude Signal
Y, Pb, Pr Characteristics:
Video Amplitude Signal
Video Bandwidth NTSC: 6 MHz Maximum
RGB Characteristics:
Signal Type
Sync Type
Input Signal Rating

Sync Level:
Frequency Range
Pixel Color
DDC Compliance
EDID Data Table

0.7(min.) – 1.1(max.) V

Typical. 0.3 V
Y : 1.0Vp-p W / Neg. Sync (IN 75 Ω )
C : 0.285Vp-p (IN 75 Ω )
Y:1.0Vp-p (IN 75 Ω)
Pb:0.7 Vp-p(IN 75 Ω),Pr:0.7 Vp-p (IN 75 Ω)

Analog VGA
TTL, Separate Sync, with 4.7KΩ pull-down resistors
1250mV Max without damage to the product, 0-700 mV Full Range

2.5-5.25 V

Horizontal: 31.5-61K Hz, Vertical: 60-75 Hz
16 M
DDC2B Compliant
See Appendix B

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2.2 Audio

Audio processor of this product used a “SONY” CXA2104 audio decoder (for MTS) or “Micronas” MSP3425G (for NICAM),
and used a “YAMAHA” YDA135 audio processor amplifier. In addition, a pair of speakers shall be integrated within this
product. The audio signals of this product shall comply with the specification listed in the following table.

Parameter Specification

Tuner Input Base band Input

Speaker Power Output Max
Rating

Speaker Impedance

Line In Per Tuner Spec

Line Out
Flatness of Amplitude

Response

Total Harmonic Distortion
(Po=0.1 to 2 W, f=100Hz­15KHz)

Signal to Noise:

2W at 3 % T.H.D Distortion 2W at 3% T.H.D Distortion

8 Ω 8 Ω

Max. 1Vrms

N/A N/A

3 dB ( 6KHz deviation, 40Hz to 15KHz) 3 dB (200-16 kHz)

<10% <10%

30 dB (40Hz to 15KHz) 40dB (400Hz to 20 kHz)

2.3 Electrical

The following table defines the electrical specification of this product.

ELECTRICAL SPECIFICATION

1 Power Input Voltage Range 100-240VAC +/- 10% Wide Range

2 Input Frequency Range

Input Current 1.5A @ 230VAC

3

4 Power Supply Inrush

5 Power Consumption:

6 Interference with RF and Video

7 Electromagnetic Compatibility

Power Supply Transient Immunity

8

(Supply Transients and Outage)

9 Surge Immunity Test

Power Supply Missing Cycle

10

Immunity

11 Power Supply Acoustics

Efficiency >= 70% @ full load, nominal line

12

13 Leakage Current <3.5mA @ 110VAC

Power Saving

14

15 Recovery Time < 3 sec.

Power Factor Correction Compliant with EN61000-3-2

16

47-60 Hz ±3Hz

Max in < 35A (with fully loaded power supply) at 110Vac

Shall not result in permanent failure of power supply (including blown fuse)
Normal: 70 W (Max) // Sleep: < 3W (< 3W, when Power Off)

There shall be no visible interference between power supply, RF and video
signals. This applies to all available RF channels and video modes.
This product shall adhere to the compatibility and immunity specifications in
FCC.
Able to withstand an ANSI / IEEE C62.41 – 1980 6000V 200A ring wave
with no damage.
Able to withstand 1.5X nominal Line Voltage for one cycle with no damage.

Function properly without reset or visible screen artifact when ½ cycle of AC
Power is randomly missing.
The Power Supply shall not produce audible noise that would be detectable
by the user (Excluding Power Supply Fan).
“Audible” shall be defined in accordance with ISO 7779 (DIN
EN27779:1991).
Power Switch noise shall be Excluded.

When system is “OFF”, some minimal (<5W) power shall be consumed.

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3. Adjustment

3.1 Front panel adjustment

The following front panel adjustments are available for N1750W.
POWER switch: This switch shall be visible and accessible on the down right side of front PC frame. Soft Power Switch
(TURN ON SYSTEM) and one push of Soft-Power Switch shall turn on the system.
Note: This switch is not considered the “Mains Disconnection Device” for agency purposes. The AC switch in back cover
of product can also disconnect power. The power cord is the main disconnection device.

Power Indicator LED: This LED will illuminate “Green” light when the product is ON and “Red” light when the product in
stand-by mode.

CH +/-: These two switches shall be visible and accessible on the bottom of front panel control keys. While TV/CATV is
selected as input source, activation of these keys will cycle through all available TV/CATV channels. While OSD menu is
up, activation of these keys will highlight each available adjustment. The activation time for this switch includes Press and
Hold should be less than half second.

VOL +/-: These two switches shall be visible and accessible on the bottom of front panel control keys. Activation will
increase /decrease loudness of the audio output. In addition, while OSD menu is up, activation of these keys will regulate a
pre-selected adjustment. The activation time for this switch includes Press and Hold should be less than half second.

MENU: This switch shall be visible and accessible on the left side of VOL - switches. Once pressed, this key shall bring
up the corresponding OSD menu(s) based on the selected input source.

SOURCE: This switch shall be visible and accessible on the right side of VOL + switches. Once pressed, this key shall
toggle in a closed loop of the input source selection from TV, AV1, AV2, S-Video, Component, PC

Headphone: This connector is designed purpose to use headphone. Once the headphone connected, then the speakers will
auto mute on audio output.

3.2 How to use the menu

1. Press the MENU button to display each menu

2. Use the cursor up/down to select a menu item.

3. Use the cursor left/right to enter a submenu or enable/disable the function.

4. Press the MENU button to exit the menu.

OSD Table for N1750W

Items Description

Brightness Adjust the Black levels from 0 to 100
Contrast Adjust the White levels from 0 to 100
Saturation Adjust the color from light to heavy
Tint Adjust from Red to Green
Sharpness Adjust the Sharpness levels from 0 to 10
Black Level Adjust the Black light from 0 to 100
Volume Adjust the Volume levels from 0 to 100
Treble Adjust the Hi Frequency from light to heavy
Bass Adjust the Low Frequency from light to heavy
W / Head Phone No function at this model
SRS Enable SRS or disable SRS
Caption Selections Close Caption on or off .
Mode Selection Caption or Text for C.C
Channel Selections CC1 or CC2 or Text1 or Text2
Display Selection display Box or shadow for C.C
V-Chip V-Chip relative setting
Status Setting V-Chip function enable or disable
TV Guidelines TV Guidelines Setting
Movie Guidelines Movie Guidelines Setting
Change Pin Change Pin for V-Chip control
Sleep Timer Setting time to auto turn TV off
Set Up Setting TV basic function

TV / VIDEO MODE

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Blue Screen Sets Blue Screen on or off
Language Selections English, Spanish or French
Air / Cable Selections Air TV input or Cable TV input
Ch. Search Channel auto search by TV set
CH. Del ‹ Add › Skip or add current channel
View Mode Select view mode at 4:3 or 16:9 or non-Linear
Reset Reset TV to default value

PC

Brightness Adjust the Black levels from 0 to 100
Contrast Adjust the White levels from 0 to 100
Focus Adjust the color from light to heavy
H Position Adjust screen horizontal position
V Position Adjust screen vertical position
Auto Fine tuning clock and phase
Volume Adjust the Volume levels from 0 to 100
Treble Adjust the Hi Frequency from light to heavy
Bass Adjust the Low Frequency from light to heavy
SRS Enable SRS or disable SRS
Language Selections English, Spanish or French
PIP Select PIP relative function.
Position Adjust Sub-screen position
Source Selections Sub-screen display TV or AV1 or AV2 or S-Video
Audio Select Select audio from main-screen or sub-screen
Warm Setting color Temp. warm
Cool Setting color Temp. cool
Clock Adjust PC display clock for better performance
Caption Selections Close Caption on or off .
Mode Selection Caption or Text for C.C
Channel Selections CC1 or CC2 or Text1 or Text2
Display Selection display Box or shadow for C.C
Red Setting color Temp. more red.
Green Setting color Temp. more green.
Blue Setting color Temp. more blue.
Color Color Temp. Relative setting

V-Chip V-Chip relative setting f
Status Setting V-Chip function enable or disable
TV Guidelines TV Guidelines Setting
Movie Guidelines Movie Guidelines Setting
Change Pin Change Pin for V-Chip control

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4. Assembly and disassembly procedure

This section covers disassembly and reassembly of the N1750W LCD TV. Removal of external casing, its individual parts or

internal components can render the product dangerous. There can be a risk of electric shock from exposed components even when
the device is not connected to a power source.

4.1 Disassembly

1. Remove the cover rear as arrow direction

2. Unscrew and remove eleven screws marked red.

3. Remove the back rear.

For a screw under
the base

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4. Unscrew and remove four screws marked red.

5. Remove the shield as arrow direction.

Two speakers

6. Unscrew and remove six screws marked red in power board.

7. Remove the connector wire marked blue in power board.

8. Unscrew and remove four screws marked red in main board.

9. Remove the connector wire marked blue in main board.

10. Remove the power board and main board synchronously

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LCD Panel

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5. Exploded view

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6. PCB Layout

6.1 Main board

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6.2 Power board

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7. Main board IC descriptions

g

r

g

r

7.1 SPV302A

7.1.1 General Description

The SPV302A is a highly integrated processor solution for multi-media LCD/CRT TV applications. It is a dual source device

with input sources from D-sub. This chip provides 3D motion adaptive de-interlacing, 2:2/3:2 film mode detection, video PIP/POP,
SDRAM controller, color controls, OSD and embedded CPU. In addition to being a complete solution for multi-media LCD/CRT
TV applications, the SPV302A also has the full service and support of Sunplus.

7.1.2 Block diagram

Port A

Port B

Port C

Sync
signals

YUV/RGB
interface

Sync

Processor

SDRAM/SGRAM

main

sub

DRAM

controller

DMA

controller

Timing

Generator

Video mode

Graphic mode

Auto

Calibration

deinterlace

Scaling up/down

CPU

Flash ROM

engine

De-interlaced

timing
enerato

Display

timing
enerato

Skin/Gain/

Offset

Gamma

table/Dithering

Display timing

OSD MUX

OSD engine

output

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7.1.3 List of pins and package

388-pin PBGA

A

B

C

D

E

F

G

H

J

K

L

M

N

P

R

T

U

V

W

Y

AA

AB

AC

AD

AE

AF

Signal Description

Ball Pin Name Dir. Description Memo

AF13 MPLLVDD25 PG MPLL power (2.5V)

AF14 MPLLVSS25 PG MPLL ground

D7 OPLLVDD25 PG OPLL power (2.5V)

B6 OPLLVSS25 PG OPLL ground

B5 DPLLVDD25 PG DPLL power (2.5V)

D6 DPLLVSS25 PG DPLL ground

A4 UPLLVDD25 PG USB PLL power 2.5v
C6 UPLLVSS25 PG USB PLL ground
E1 XTALI I Crystal pad input (12MHz)
F2 XTALO O Crystal pad output
C4 RVDD33 PG RTC crystal pad input 3.3V
D3 XTALIRTC I 32768 crystal pad input
E3 XTALORTC O 32768 crystal pad output
B3 RVSS33 PG RTC crystal pad ground

A3 ADCVSS33 PG Key-scan ADC analog ground
C5 ADC0 Channel 0 input
D5 ADC1 Channel 1 input
B4 ADCVDD33 PG Key-scan ADC analog power 3.3V

If built-in USB transceiver is disabled, the SPV302A must

S

np

u

us

l

A

r

o

Clock Interface

Key-Scan ADC Interface

USB Interface

o

C

C

O

n

U

i

f

S

n

de

O

E

a

i

t

N

l

Y

L

Double

bound

Double

bound

Double

bound

Double

bound

Double

bound

Double

bound

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communicate with an external USB transceiver. Whether to use an
internal or an external USB transceiver is determined by an IO-trap.
If the external transceiver is selected, pins FM30-FM35 serve as the

interface connection to the external USB transceiver
E4 UVDD33 PG USB transceiver analog power
C2 DP B USB data plus
D2 DM B USB data minus
D1 UVSS33 PG USB transceiver analog ground

CPU Interface

H4 P10 B

F1 P11 B

G3 P12 B

G2 P13 B

J4 P14 B

G1 P15 B

H3 P16 B

H2 P17 B

F3 HWRST I Power on reset, active high D,S

J3 P00 B CPU port 0, address/data multiplex pin, bit 0 U,S
H1 P01 B CPU port 0, address/data multiplex pin, bit1 U,S
L3 P02 B CPU port 0, address/data multiplex pin, bit 2 U,S

J1 P03 B CPU port 0, address/data multiplex pin, bit 3 U,S
K3 P04 B CPU port 0, address/data multiplex pin, bit 4 U,S

J2 P05 B CPU port 0, address/data multiplex pin, bit 5 U,S
K2 P06 B CPU port 0, address/data multiplex pin, bit6 U,S
K1 P07 B CPU port 0, address/data multiplex pin, bit 7 U,S

L2 P20 B

L1 P21 B CPU port2, high byte address, bit1 U,S

M1 P22 B CPU port2, high byte address, bit2 U,S
M3 P23 B CPU port2, high byte address, bit3 U,S
M2 P24 B CPU port2, high byte address, bit4 U,S

N1 P25 B CPU port2, high byte address, bit5 U,S
N2 P26 B CPU port2, high byte address, bit6 U,S
N3 P27 B CPU port2, high byte address, bit7 U,S

Default function Alternative function

Default

function

General
purpose

IO1, bit0

(trap0)
General
purpose

IO1, bit1

(trap1)
General
purpose

IO1, bit2

(trap2)
General
purpose

IO1, bit3

(trap3)
General
purpose

IO1, bit4

(trap4)
General
purpose

IO1, bit5

(trap5)
General
purpose

IO1, bit6

(trap6)
General
purpose

IO1, bit7

(trap7)

CPU port 2, high byte address, bit0. This bus is an output bus in the

internal CPU mode and an input bus in the external CPU mode

Alternative

function

CPU port 1, bit0 EOSDEN (I) Probe 0 S

CPU port 1, bit1 EOSDB(I) Probe 1 S

CPU port 1, bit2 EOSDG(I) Probe 2 S

CPU port 1, bit3 EOSDR(I) Probe 3 S

CPU port 1, bit4

CPU port 1, bit5

CPU port 1, bit6 PWM1/ (O) Probe 6 S

CPU port 1, bit7 PWM0/ (O) Probe 7 S

Alternative

function

PWM3/
Backlight
power(O)

PWM2/ Panel

power(O)

Alternative

function

Probe 4 S

Probe 5 S

U,S

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P1 P30 B CPU port3, bit0. (RXD) General purpose IO3 bit0 U,S
P2 P31 B CPU port3, bit1. (TXD) General purpose IO3 bit1 U,S
P3 P32 B CPU port3, bit2. (INT0nn) General purpose IO3 bit2 U,S
P4 P33 B CPU port3, bit3 General purpose IO3 bit3 U,S
R1 P34 B CPU port3, bit4. (T0) General purpose IO3 bit4 U,S
R2 P35 B CPU port3, bit5. (T1) General purpose IO3 bit5 U,S
R3 P36 B CPU port3, bit6. (WRnn) General purpose IO3 bit6 U,S
R4 P37 B CPU port3, bit7. (RDnn) General purpose IO3 bit7 U,S

Adress latch enable. This pin is an

F4 ALE B

G4 PSEN B

T1 TESTMODE I D
T2 TVREMOTE I D

AC21 EXTMCLK I D

A5 EXTDCLK I D

E2 EOSDCLK B

AE3 PRMA0 O CPU low byte address bit0 Probe 8
AC7 PRMA1 O CPU low byte address bit1 Probe 9
AD5 PRMA2 O CPU low byte address bit2 Probe 10
AD7 PRMA3 O CPU low byte address bit3 Probe 11
AF3 PRMA4 O CPU low byte address bit4 Probe 12
AD6 PRMA5 O CPU low byte address bit5 Probe 13
AE4 PRMA6 O CPU low byte address bit6 Probe 14
AF4 PRMA7 O CPU low byte address bit7 Probe15
AE5 PRMA16 O CPU extended ROM address, bit 16
AF5 PRMA17 O CPU extended ROM address, bit 17
AE6 PRMA18 O CPU extended ROM address, bit 18

AF6 ROMWRNN O

TVOUT TCON

U1 VOUT0 B B2 B0 OB0 OB0 R,8
T3 VOUT1 B B3 B1 OB1 OB1 R,8
U2 VOUT2 B B4 B2 B0 OB2 OB0 OB2 R,8
U3 VOUT3 B B5 B3 B1 OB3 OB1 OB3 R,8
V1 VOUT4 B B6 B4 B2 OB4 OB2 OB4 R,8
V2 VOUT5 B B7 B5 B3 OB5 OB3 OB5 R,8
V3 VOUT6 B B8 B6 B4 OB6 OB4 OB6 R,8

W1 VOUT7 B B9 B7 B5 OB7 OB5 OB7 R,8

Y1 VOUT8 B G2 G0 OG0 OG0 R,8
W2 VOUT9 B G3 G1 OG1 OG1 R,8
W3 VOUT10 B G4 G2 G0 OG2 OG0 OG2 R,8
W4 VOUT11 B G5 G3 G1 OG3 OG1 OG3 R,8

Y2 VOUT12 B G6 G4 G2 OG4 OG2 OG4 R,8

Y3 VOUT13 B G7 G5 G3 OG5 OG3 OG5 R,8

AA1 VOUT14 B G8 G6 G4 OG6 OG4 OG6 R,8
AA2 VOUT15 B G9 G7 G5 OG7 OG5 OG7 R,8
AA3 VOUT16 B R2 R0 OR0 OR0 R,8
AB1 VOUT17 B R3 R1 OR1 OR1 R,8

ViewSonic Corporation N1750w

output pin when the built-in CPU

is enabled. When an external CPU

is used, this pin is an input pin

Program space enable. This pin is

an output pin when the built-in

CPU is enabled. When an external

CPU is used, this pin is input pin

EOSDCLK is a default to connect 2 times of display clock(i.e.,

EXTOCLKx2) for the test mode. It can be programmed to output an

internal display clock for an external OSD chip

External write pulse. This pin is used in the ISP (in-system-

programming) function

Video Output Interface

Video output interface can be routed to embedded DAC for testing.

VOUT[29:0] are routed to video DAC according to 10bit single

pixel format. VOUT]37:30] are routed to SVM DAC.

Single

pixel
10bit

Single

pixel 8bit

Single

pixel 6bit

21

SCL of I2C interface (I) S

SDA of I2C interface (B) S

Dual pixel

8bit

Dual
pixel

6bit

D

AB2 VOUT18 B R4 R2 RO OR2 OR0 OR2 R,8
AB3 VOUT19 B R5 R3 R1 OR3 OR1 OR3 R,8
AB4 VOUT20 B R6 R4 R2 OR4 OR2 OR4 R,8
AC1 VOUT21 B R7 R5 R3 OR5 OR3 OR5 R,8
AC2 VOUT22 B R8 R6 R4 OR6 OR4 OR6 R,8
AC3 VOUT23 B R9 R7 R5 OR7 OR5 OR7 R,8
AE1 VOUT24 B B0 EB0 EB0 R,8
AD3 VOUT25 B B1 EB1 EB1 R,8
AE2 VOUT26 B G0 EB2 EB0 EB2 R,8
AC5 VOUT27 B G1 EB3 EB1 EB3 R,8
AF1 VOUT28 B R0 EB4 EB2 EB4 R,8
AD4 VOUT29 B R1 EB5 EB3 EB5 R,8
AC6 VOUT30 B EB6 EB4 EB6 R,8

AF2 VOUT31 B EB7 EB5 EB7 R,8
AD18 VOUT32 B EG0 EG0 R,8
AF19 VOUT33 B EG1 EG1 R,8
AE19 VOUT34 B EG2 ER0 EG2 R,8
AF20 VOUT35 B EG3 ER1 EG3 R,8
AD19 VOUT36 B EG4 EG2 EG4 R,8
AE20 VOUT37 B EG5 EG3 EG5 R,8
AF21 VOUT38 B EG6 EG4 EG6 R,8
AD20 VOUT39 B EG7 EG5 EG7 R,8
AE21 VOUT40 B ER0 ER0 R,8
AF22 VOUT41 B ER1 ER1 R,8
AD21 VOUT42 B ER2 ER0 ER2 R,8
AE22 VOUT43 B ER3 ER1 ER3 R,8
AF23 VOUT44 B ER4 ER2 ER4 R,8
AF24 VOUT45 B ER5 ER3 ER5 R,8
AD22 VOUT46 B ER6 ER4 ER6 R,8
AE23 VOUT47 B ER7 ER5 ER7 R,8

AD1 HSOUT O Output horizontal sync STV1 T,R,8

AD2 VSOUT O Output vertical sync STV3 T,R,8

AC4 DEN O Output data enable OE1 T,R,8

Y4 CLK1 O Output clock 1 OE2 T,R,8

AA4 CLK2 O Output 2 OE3 T,R,8

Video DAC Interface

AE7 AVDD33 PG Video DAC Analog power 3.3V

AD8 AVDD33 PG Video DAC Analog power 3.3V

AE8 AVDD33 PG Video DAC Analog power 3.3V

AF7 AROUT DAC analog red/Y output

AF9 AGOUT DAC analog green/Pb output
AF10 ABOUT DAC analog blue/ Pr output

AE9 CBU Connect to power via a 0.1 UF capacitor
AD10 CBL Connect to power via a 0.1 UF capacitor

AD9 RSET DAC scale adjustment

AF8 VREF DAC voltage reference
AE10 AVSS33 PG Video DAC Analog ground
AD11 AVSS33 PG Video DAC Analog ground
AE11 AVSS33 PG Video DAC Analog ground
AE12 AVSS33 PG Video DAC Analog ground
AE13 SVMOUT SVM output
AD13 VMCBU Connect to power via a 0.1UF capacitor
AC13 VMCBL Connect to power via a 0.1UF capacitor
AF12 VMREF DAC scale adjustment
AF11 VMREF DAC voltage reference
AD12 AVDD33 PG SVM DAC Analog power 3.3V

General Purpose I/O power

A23 FM1 B GPIO

A22 FM2 B GPIO

A21 FM4 B GPIO

A20 FM5 B GPIO

ViewSonic Corporation N1750w

22

C20 FM6 B GPIO
B20 FM7 B GPIO
C19 FM8 B GPIO

A19 FM9 B GPIO

B19 FM10 B GPIO
C18 FM11 B GPIO

B18 FM12 B GPIO
A18 FM13 B GPIO
A17 FM14 B GPIO

C17 FM15 B GPIO

B17 FM16 B GPIO
A16 FM17 B GPIO

B16 FM18 B GPIO
A15 FM20 B GPIO

B15 FM21 B GPIO

C15 FM22 B GPIO
A14 FM23 B GPIO

B14 FM24 B GPIO

AC14 FM25 B GPIO
AE14 FM26 B GPIO
AD14 FM27 B GPIO
AF15 FM28 B GPIO
AE15 FM29 B GPIO
AD15 FM30 B GPIO
AF16 FM31 B GPIO
AE16 FM32 B GPIO
AD16 FM33 B GPIO
AF17 FM34 B GPIO
AE17 FM35 B GPIO
AD17 FM36 B GPIO
AF18 FM37 B GPIO
AE18 FM38 B GPIO

SDRAM Interface

AF25 MD0 B SDRAM data bus, bit0 R,8
AC22 MD1 B SDRAM data bus, bit1 R,8
AD23 MD2 B SDRAM data bus, bit2 R,8
AF26 MD3 B SDRAM data bus, bit3 R,8
AE24 MD4 B SDRAM data bus, bit4 R,8
AC23 MD5 B SDRAM data bus, bit5 R,8
AD24 MD6 B SDRAM data bus, bit6 R,8
AE25 MD7 B SDRAM data bus, bit7 R,8
AB24 MD8 B SDRAM data bus, bit8 R,8
AC25 MD9 B SDRAM data bus, bit9 R,8
AD26 MD10 B SDRAM data bus, bit10 R,8
AA24 MD11 B SDRAM data bus, bit11 R,8
AB25 MD12 B SDRAM data bus, bit12 R,8
AC26 MD13 B SDRAM data bus, bit13 R,8
AB26 MD14 B SDRAM data bus, bit14 R,8

Y24 MD15 B SDRAM data bus, bit15 R,8
W23 MD16 B SDRAM data bus, bit16 D,R,8

AA25 MD17 B SDRAM data bus, bit17 D,R,8
AA26 MD18 B SDRAM data bus, bit18 D,R,8

Y25 MD19 B SDRAM data bus, bit19 D,R,8
W24 MD20 B SDRAM data bus, bit20 D,R,8
Y26 MD21 B SDRAM data bus, bit21 D,R,8
W25 MD22 B SDRAM data bus, bit22 D,R,8
V24 MD23 B SDRAM data bus, bit23 D,R,8
W26 MD24 B SDRAM data bus, bit24 D,R,8
V25 MD25 B SDRAM data bus, bit25 D,R,8
U24 MD26 B SDRAM data bus, bit26 D,R,8
V26 MD27 B SDRAM data bus, bit27 D,R,8

ViewSonic Corporation N1750w

23

U25 MD28 B SDRAM data bus, bit28 D,R,8
U26 MD29 B SDRAM data bus, bit29 D,R,8

T24 MD30 B SDRAM data bus, bit30 D,R,8

T25 MD31 B SDRAM data bus, bit10 D,R,8
N24 DQM0L O SDRAM data mask signal, bank0, low byte R,8
M26 DQM0H O SDRAM data mask signal, bank0, high byte R,8
M25 DQM1L O SDRAM data mask signal, bank1, low byte R,8
M24 DQM1H O SDRAM data mask signal, bank1, high byte R,8

AC24 WENN O SDRAM write enable signal R,8
AB23 SDCLK O SDRAM clock R,8
AD25 RASNN O SDRAM raw address strobe signal R,8
AE26 CASNN O SDRAM column address strobe signal R,8

L26 MA0 O SDRAM address bus, bit0 R,8

L25 MA1 O SDRAM address bus, bit1 R,8

L24 MA2 O SDRAM address bus, bit2 R,8
K26 MA3 O SDRAM address bus, bit3 R,8
K25 MA4 O SDRAM address bus, bit4 R,8
K24 MA5 O SDRAM address bus, bit5 R,8

J26 MA6 O SDRAM address bus, bit6 R,8

J25 MA7 O SDRAM address bus, bit7 R,8
H26 MA8 O SDRAM address bus, bit8 R,8
H25 MA9 O SDRAM address bus, bit9 R,8

J24 MA10 O SDRAM address bus, bit10 R,8

J23 MA11 O SDRAM address bus, bit11 R,8
G26 MA12 O SDRAM address bus, bit12 R,8
H24 MA13 O SDRAM address bus, bit13 R,8
H23 MA14 O SDRAM address bus, bit14 R,8

Video Input Interface

The SPV302A supports three video interfaces, port A, port B and

T26 CLKC B CLKC (I) CPV (O) D,R,8
R25 DATAC0 B DATAC0 (I) CPH (O) D,R,8
R24 DATAC1 B DATAC1 (I) STH1 (O) D,R,8
R26 DATAC2 B DATAC2 (I) RLS (O) D,R,8
P24 DATAC3 B DATAC3 (I) LP (O) D,R,8
P25 DATAC4 B DATAC4 (I) POL (O) D,R,8

P26 DATAC5 B DATAC5 (I) SHC (O) D,R,8
N26 DATAC6 B DATAC6 (I) INV1 (O) D,R,8
N25 DATAC7 B DATAC7 (I) INV2 (O) D,R,8

YUV RGB(888)

F26 DATAA0 I UV0 R0 RA0
G25 DATAA1 I UV1 R1 RA1
G24 DATAA2 I UV2 R2 RA2

F25 DATAA3 I UV3 R3 RA3

E26 DATAA4 I V6/4/2/0 UV4 R4 RA4
G23 DATAA5 I V7/5/3/1 UV5 R5 RA5

F24 DATAA6 I U6/4/2/0 UV6 R6 RA6

E25 DATAA7 I U7/5/3/1 UV7 R7 RA7
D26 DATAA8 I DA0 YUV0 Y0 Y0 G0 GA0

F23 DATAA9 I DA1 YUV1 Y1 Y1 G1 GA1

E24 DATAA10 I DA2 YUV2 Y2 Y2 G2 GA2
D25 DATAA11 I DA3 YUV3 Y3 Y3 G3 GA3

C26 DATAA12 I DA4 YUV4 Y4 Y4 G4 GA4

E23 DATAA13 I DA5 YUV5 Y5 Y5 G5 GA5
D24 DATAA14 I DA6 YUV6 Y6 Y6 G6 GA6

port C. When the TCON interface is disabled, port C is used to

connect a video decoder in CCIR656 format. When the TCON

interface is enabled, port C is used to output TCON control signals.

8bit

(656)

422

format

8bit (601) 12bit 16bit 24bit 48bit

422 format 411 format 422 format

Single

pixel

Dual
pixel

ViewSonic Corporation N1750w

24

C25 DATAA15 I DA7 YUV7 Y7 Y7 G7 GA7

B26 DATAA16 I B0 BA0
D23 DATAA17 I B1 BA1

B25 DATAA18 I B2 BA2
A26 DATAA19 I VREFA VREFA VREFA B3 BA3
D22 DATAA20 I FIELDA FIELDA FIELDA B4 BA4

C24 DATAA21 I B5 BA5
D21 DATAA22 I HREFA HREFA HREFA B6 BA6

C23 DATAA23 I DVALIDA DVALIDA DVALIDA B7 BA7

C14 DATAB0 I UV0 RB0
A13 DATAB1 I UV1 RB1

B13 DATAB2 I UV2 RB2

C13 DATAB3 I UV3 RB3
A12 DATAB4 I V6/4/2/0 UV4 RB4

B12 DATAB5 I V7/5/3/1 UV5 RB5

C12 DATAB6 I U6/4/2/0 UV6 RB6
A11 DATAB7 I U7/5/3/1 UV7 RB7

B11 DATAB8 I DA0 YUV0 Y0 Y0 GB0

C11 DATAB9 I DA1 YUV1 Y1 Y1 GB1
A10 DATAB10 I DA2 YUV2 Y2 Y2 GB2

B10 DATAB11 I DA3 YUV3 Y3 Y3 GB3

C10 DATAB12 I DA4 YUV4 Y4 Y4 GB4

A9 DATAB13 I DA5 YUV5 Y5 Y5 GB5
B9 DATAB14 I DA6 YUV6 Y6 Y6 GB6
C9 DATAB15 I DA7 YUV7 Y7 Y7 GB7
A8 DATAB16 I BB0
B8 DATAB17 B VSB VSB VSB BB1
C8 DATAB18 I CLKB CLKB CLKB BB2
A7 DATAB19 I VREFB VREFB VREFB BB3
B7 DATAB20 I FIELDB FIELDB FIELDB BB4
A6 DATAB21 B HSB HSB HSB BB5
D8 DATAB22 I HREFB HREFB HREFB BB6

C7 DATAB23 I DVALIDB DVALIDB DVALIDB BB7
B24 HSA B Horizontal sync of video port A S
C22 VSA B Vertical sync of video port A S

D20 CLKA I Input clock of video port A

C21 PCHS I Raw horizontal sync of video port A S

A25 CLAMP B Clamp signal for DC restoration of analog input data (trap 10)
A24 CVS B Regenerated vertical sync from composite sync (trap 8)

B23 CHS B Regenerated horizontal sync from composite sync (trap 9)

Digital IO Power Pair

A1,A2,B1,B2,C1,C3,D4,M12,M13,M14,

M15,N12,N13,N14,N15,P12,P13,P14,

P15,R12

AA23,AC9,AC10,AC18,AC19,AC20,

D12,D13,D14,M4,M23,N4,N23,P23,R23,

Y23

Digital Core Power Pair

L11,R13,R14,R15,D15,L12,L13,L14,

L15,L16,M11,M16,N11,N16,P11,P16,

R11,R16,T11,T12,T13,T14,T15,T16,

AC12,D16,T4

AC8,AC11,AC15,AC16,AC17,D9,

D10,D11,D17,D18,D19,K4,K23,L4,L23,

T23,U4,U23,V4,V23

No Connection Pins

B22,B21,C16 N.C.

DVSS33

DVDD33 3.3V

DVSS25

DVDD25 2.5V

Memo:

U: internal pull-up R: Limited slew rate output
D: internal pull-down 8: 8mA output current
S: Schmitt trigger input 16: 16mA output current
T: 3-state output

ViewSonic Corporation N1750w

25

7.1.4 IO-Trap

While most configurations of the SPV302A can be programmed by firmware, there are some configurations that must be

determined immediately after the chip is powered-on. The SPV302A adopts an IO-trap mechanism to set these configurations. These

configurations are not changed during the operation of the SPV302A. The SPV302A samples signal states on the video output bus

when the reset signal goes form high to low. These samples values, in turn, set the internal configurations. The following table lists all

the IO-trap values in the SPV302A:

Name Description Note

Trap[0] Extcpu

Trap[1] Fastrsten

Trap[2] MPU_I2C

Trap[4:3] I2Cslave

Trap[5] Extusb 1’b1

Trap[6] Extflash

Trap[7] Lvrsten

Trap[9:8] Lvdelay

Trap[10]

0: use internal CPU

1: use external CPU (or ICE)

0: Normal mode (10 ms reset)

1: Fast reset (32 xtal clock)

Use external CPU interface

0: use serial I2C interface

1: use parallel MPU interface

Set I2C alave address

00: 68H 01: 6AH

10: 6CH 11: 6EH

0: executes internal ROM code

1: executes external ROM code

0: disables low voltage reset

1: enable low voltage reset

Configures low voltage detector response time

00: delay 64 xtal clocks

01: delay 128 xtal clocks

10: delay 256 xtal clocks

11: delay 512 xtal clocks

0: set video output interface to VOUT port

1: set parallel MPU interface to VOUT port

ViewSonic Corporation N1750w

26

7.2 AD9883

7.2.1 Description

The AD9883A is a complete 8-bit, 140 MSPS monolithic analog interface optimized for capturing RGB graphics signals from
personal computers and workstations. Its 140 MSPS encode rate capability and full power analog bandwidth of 300 MHz supports
resolutions up to SXGA (1280 x 1024 at 75Hz).

7.2.2 Block diagram

ViewSonic Corporation N1750w

27

7.3 VPC3230D

7.3.1 Description

The VPC 323xD/324xD is a high-quality, single-chip Multi-standard color decoder which is targeted for 4:3 and 16:9, 50/60 and
100/120 Hz TV sets. it integrates 4H comb filter Y/C separator, high-quality A/D converter, multi-type scaler, multi-outputs
formats interfaces ,high-quality soft mixer and I square C bus interface. It can supports PIP which can be processed in 15
predefined positions and provides linear horizontal scaling and non-linear scaling for different purposes. It only take few
peripheral components and a 20.25 MHz crystal and the package of it is 80-pin PQFP.

7.3.2 Block diagram

7.3.3 Pin functions

Pin No.
PQFP
80-pin

1 B1/CB1IN IN VREF Blue1/Cb1 Analog Component Input
2 G1/Y1IN IN VREF Green1/Y1 Analog Component Input
3 R1/CR1IN IN VREF Red1/Cr1 Analog Component Input
4 B2/CB2IN IN VREF Blue2/Cb2 Analog Component Input
5 G2/Y2IN IN VREF Green2/Y2 Analog Component Input
6 R2/CR2IN IN VREF Red2/Cr2 Analog Component Input
7 ASGF X Analog Shield GNDF
8 FFRSTWIN IN LV or GNDD FIFO Reset Write Input **
9 VSUPCAP OUT X Digital Decoupling Circuitry Supply Voltage
10 VSUPD SUPPLYD X Supply Voltage, Digital Circuitry
11 GNDD SUPPLYD X Ground, Digital Circuitry
12 GNDCAP OUT X Digital Decoupling Circuitry GND
13 SCL IN/OUT X I2C Bus Clock
14 SDA IN/OUT X I2C Bus Data
15 RESQ IN X Reset Input, Active Low
16 TEST IN GNDD Test Pin, connect to GNDD
17 VGAV IN GNDD VGAV Input
18 YCOEQ IN GNDD Y/C Output Enable Input, Active Low
19 FFIE OUT LV FIFO Input Enable
20 FFWE OUT LV FIFO Write Enable
21 FFRSTW OUT LV FIFO Reset Write/Read

Pin Name Type Connection

Short Description

(if not used)

ViewSonic Corporation N1750w

28

22 FFRE OUT LV FIFO Read Enable
23 FFOE OUT LV FIFO Output Enable
24 CLK20 IN/OUT LV Main Clock Output 20.25 MHz
25 GNDPA OUT X Pad Decoupling Circuitry GND
26 VSUPPA OUT X Pad Decoupling Circuitry Supply Voltage
27 LLC2 OUT LV Double Clock Output
28 LLC1 IN/OUT LV Clock Output
29 VSUPLLC SUPPLYD X Supply Voltage, LLC Circuitry
30 GNDLLC SUPPLYD X Ground, LLC Circuitry
31 Y7 OUT GNDY Picture Bus Luma (MSB)
32 Y6 OUT GNDY Picture Bus Luma
33 Y5 OUT GNDY Picture Bus Luma
34 Y4 OUT GNDY Picture Bus Luma
35 GNDY SUPPLYD X Ground, Luma Output Circuitry
36 VSUPY SUPPLYD X Supply Voltage, Luma Output Circuitry
37 Y3 OUT GNDY Picture Bus Luma
38 Y2 OUT GNDY Picture Bus Luma
39 Y1 OUT GNDY Picture Bus Luma
40 Y0 OUT GNDY Picture Bus Luma (LSB)
41 C7 OUT GNDC Picture Bus Chroma (MSB)
42 C6 OUT GNDC Picture Bus Chroma
43 C5 OUT GNDC Picture Bus Chroma
44 C4 OUT GNDC Picture Bus Chroma
45 VSUPC SUPPLYD X Supply Voltage, Chroma Output Circuitry
46 GNDC SUPPLYD X Ground, Chroma Output Circuitry
47 C3 OUT GNDC Picture Bus Chroma
48 C2 OUT GNDC Picture Bus Chroma
49 C1 OUT GNDC Picture Bus Chroma
50 C0 OUT GNDC Picture Bus Chroma (LSB)
51 GNDSY SUPPLYD X Ground, Sync Pad Circuitry
52 VSUPSY SUPPLYD X Supply Voltage, Sync Pad Circuitry
53 INTLC OUT LV Interlace Output
54 AVO OUT LV Active Video Output
55 FSY/HC/HSYA OUT LV Front Sync/ Horizontal Clamp Pulse/Front-End

Horizontal Sync Output **
56 MSY/HS IN/OUT LV Main Sync/Horizontal Sync Pulse
57 VS OUT LV Vertical Sync Pulse
58 FPDAT/VSYA IN/OUT LV Front-End /Back-End Data/Front-End Vertical

Sync Output **
59 VSTBY SUPPLYA X Standby Supply Voltage
60 CLK5 OUT LV CCU 5 MHz Clock Output

61 NC –

62 XTAL1 IN X Analog Crystal Input
63 XTAL2 OUT X Analog Crystal Output
64 ASGF X Analog Shield GNDF
65 GNDF SUPPLYA X Ground, Analog Front-End
66 VRT OUTPUT X Reference Voltage Top, Analog
67 I2CSEL IN X I2C Bus Address Select
68 ISGND SUPPLYA X Signal Ground for Analog Input, connect to

69 VSUPF SUPPLYA X Supply Voltage, Analog Front-End
70 VOUT OUT LV Analog Video Output
71 CIN IN LV* Chroma / Analog Video 5 Input
72 VIN1 IN VRT* Video 1 Analog Input
73 VIN2 IN VRT Video 2 Analog Input
74 VIN3 IN VRT Video 3 Analog Input
75 VIN4 IN VRT Video 4 Analog Input
76 VSUPAI SUPPLYA X Supply Voltage, Analog Component Inputs Front-

LV OR
GNDD

Not connected

GNDF

End

ViewSonic Corporation N1750w

29

77 GNDAI SUPPLYA X Ground, Analog Component Inputs Front-End
78 VREF OUTPUT X Reference Voltage Top, Analog Component

Inputs Front-End
79 FB1IN IN VREF Fast Blank Input
80 AISGND SUPPLYA X Signal Ground for Analog Component Inputs,

connect to GNDAI

61 NC –

LV OR
GNDD

Not connected

7.4 UPD64083

7.4.1 Description

The µPD64086 realizes a high precision Y/C separation and a noise reduction by the three-dimension signal processing for
NTSC signal.
This product has the On-chip 4-Mbit memory for flame delay, 2ch of high precision internal 10-bit A/D converter, and single­chip system of 3D Y/C separation.
This LSI includes the Wide Clear Vision ID signal (Japanese local format) decoder and ID-1 signal decoder.

7.4.2 Block diagram

ViewSonic Corporation N1750w

30

7.5 TDA7226D

7.5.1 Description

The TDA7266D is a dual bridge amplifier specially designed for LCD monitor, PC Motherboard, TV and Portable Ratio

applications

7.5.2 Block diagram

ViewSonic Corporation N1750w

31

8. Block diagram

ANT

VIDEO 1

VIDEO 2

S-VIDEO

PHILIPS

FQ1236/F-H3

Tuner

NJM2244
Selector

17”VIEW SONIC Block Diagram

UPD64083

VPC 3230

Decoder

AT29LV040A

Flash ROM

Key PAD

IR

GTL5640L16

SDRAM

24LC16

EEPROM

17 inch
Panel

SPV302A
SCALAR

OSD

MCU

Y/Pb/Pr

D-SUB

SDA

SCL

TV_audio

D-SUB_audio

Audio 1

Audio 2

Y/Pb/Pr

PCA9554D
Selector

HCT 4052
Selector

M61323
Selector

AD 9883

MSP 3425G

AUDIO Decoder

ADC

Z86129

V-CHIP

Audio Line Out
(RCA)

PT2308
EAR AMP

AC 120 V

TDA7266D

Audio AMP

12V/5V

Inverter

POWER

Speaker (2Wx 2)

Headphone

NOTE: .AV2 and S-VIDCO USE the same Audio Input

ViewSonic Corporation N1750w

32

9. Schematic diagram

9.1 Main board

L115

150 OHM

EMI

L118

150 OHM

PAN_PWR5,13

P_Hs6,13

P_Vs6,13

P_DATAEN6,13

P_CLK6,13

R[0..7]6,13

G[0..7]6,13

B[0..7]6,13

Comp_L10

SVIDEO_C4

SVIDEO_Y4

Comp_R10

COMP_Y2

COMP_Pb2

COMP_Pr2

L143

120 OHM

L142 120 OHM

AV_22

AV2_L2

AV2_R2

L144

C137

0.1uF

120 OHM

O_PRO_PB

O_PRO_PR

2

1

50

49

48

47

46

45

44

43

42

41

40

39

CP103 22pF

1

2

3

4

1

2

3

C130

22pF

4

J100JACK

7

1

3

5

Place near by I/O

O_PRO_Y

5

3

4

R128 75 1/16W

R129 75 1/16W

R130 75 1/16W

8

J102A

JACK

9

6

7

AGND

150 OHM

38

J105A

L128

JACK

37

36

35

8

7

6

5

CP105

8

22pF

7

6

5

AGND

L120150 OHM

AGND

34

33

R7

switch

2

1

32

R6

3

31

R5

30

R4

5

4

CN101

EAR_R10

5VP

EAR_L10

4

5

INV_PRO6

BL_ADJ5

5V

12V

3.3VM

C159

C160

CP100

22pF

12VP

+5VP

5V

8

7

6

5

120 OHM(8P4R)

R119

10K 1/16W

0.001uF

0.001uF

R117

NC

LP110

L136 600 OHM

5

6

7

8

120 OHM(8P4R)

1

2

3

4

1

2

3

16

8

1

2

3

4

5

6

CN105

CONN

VCCGND

DA

DB

DC

DD

L113 150 OHM

L114 150 OHM

L116 150 OHM

L117 150 OHM

EMI

CN106

CONN

4

7

12

9

U104

PI5V330

EMI

Remote5

KEY_AD5

3230_Y

3230_PB

3230_PR

2

1

7

8

AGND

INTERLACE_Y 4

INTERLACE_PB 4

INTERLACE_PR 4

3

6

W_ENABLE6

Audio_L+10

Audio_L-10

29

28

27

26

25

24

23

22

21

20

19

18

17

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

CP102
22pF

5

6

7

8

5

CP104

6

22pF

7

8

5

CP106

6

22pF

7

8

5

CP107

6

22pF

7

8

R1

R2

R3

R0

8

9

2

4

6

8

9

6

7

G4

G7

AV1_R 2

AV1_L 2

AV_1 2

G6

G5

NC

G3

L123

150 OHM

R120

G2

G1

G0

B7

Q103

B6

NC

B5

B4

AGND

R121

B3

150 OHM

150 OHM

NC

AGND

B2

L126

L127

B0

B1

Remote

Q102

NC

O_PRO_Y

O_PRO_PB

O_PRO_PR

C134
10uF/16V

C135

10uF/16V

R122

I_DVD_PR

I_DVD_PB

I_DVD_Y

DVD_AL2

DVD_AR2

+

+

NC

4

3

2

1

4

3

2

1

4

3

2

1

4

3

2

1

L138 600 OHM

AGND

5

6

7

8

120 OHM(8P4R)

L130 600 OHM

AGND

DVD_L

DVD_R

L133 600 OHM

RN105

NC

1

2

3

4

LINE_O_L 11

LINE_O_R 11

MUTE

6,10

LP107

8

7

6

5

COMP_SEL5

4

3

2

1

L131
150 OHM

3230_Y
3230_PB

3230_PR

O_PRO_Y

I_DVD_Y

O_PRO_PB

I_DVD_PB

O_PRO_PR

I_DVD_PR

Audio_R+10

Audio_R-10

AGND

L132150 OHM

C139
100pF

C140

100pF

2

3

5

6

14

13

11

10

1

15

C142

100pF

100pF

S1A
S2A

S1B
S2B

S1C
S2C

S1D
S2D

IN
/EN

100pF

C138

C141

5V

AGND

3

2

1

2

1

R118

10K 1/16W

C131
22pF

AGND

LP108

4

3

2

1

C136

0.1uF

C1560.001uF

C1550.001uF

CONN

CONN

L137

600 OHM

C132

22pF

C1580.001uF

C1540.001uF

CN111

CN112

C1570.001uF

C1430.1uF

C145

0.1uF

10

AGND

C1440.1uF

CN102

1

2

3

4

5

6

7

8

9

CONN

1

2

3

4

5

6

7

8

6

5

4

3

2

1

CN107

CONN

CN103

CONN

ViewSonic Corporation N1750w

33

SEL1

SEL2
0

AGND

C112

C111

22pF

22pF

AV_11
AV_21

TUNER_OUT3

CH_SEL36
CH_SEL26

AV1_R_1
AV2_R_1

Comp_R_110

DVD_AR1

AV1_L_1

AV2_L_1

Comp_L_110

DVD_AL1

CH_SEL16

CH_SEL26

5V

C124

10uF/16V

12VS

+

R125

10 2W

R108

75 1/16W

C113

22pF

U100

12

X0

14

X1

15

X2

11

X3

1

Y0

5

Y1

2

Y2

4

Y3

10

A

9

B

6

EN

7

VEE

16

VDD

+

R109

75 1/16W

13

X

3

Y

GND

74HC4052D

8

U105

3 2

VI VO

C164

10uF/16V

1

GND

+

+

+

C114
10uF/16V

C116
10uF/16V

C117
10uF/16V

5V_MUX

0

0

1
0

1

1

1

5V

AGND

ASEL_O_R 11

ASEL_O_L 11

VGA_HS9
VGA_VS9

COMP_Pr1

COMP_Y1

COMP_Pb1

VIDEO_SEL6

+

C168
10uF/16V

C163

0.1uF

SEL3
0
1
1
1

C121

0.1uF

VGA_G9

VGA_B9

1
3
5

2
4

6

VGA_R9

audio
AV1
SCART
PC
SVIDEO

U102

VIN1
VIN2
VIN3

SW1
SW2

V+

video
AV1
SCART
TUNER

VOUT

GND

NJM2244

8

R114 75 1/16W

R115 75 1/16W　R111 75 1/16W

7

5V_MUX

Ri

Gi

Bi
Hi
Vi

Pr

Y

Pb

R116 75 1/16W

Ri
Gi
Bi
Hi
Vi

C126 47uF/16V

C127 47uF/16V

C128 47uF/16V

LOW:INPUT1
HIGH:INPUT2

R113 75 1/16W

R112 75 1/16W

RN102 NC1

2
3
4

R126 NC

CVBS_SEL_O 15

L140

L139

5V

C151 0.1uF

C122 47uF/16V

C152 0.1uF

C123 47uF/16V

C153 0.1uF

C125 47uF/16V

+

+

+

8
7
6
5

R123

C167100pF

+

+

+

1K 1/16W

C162100pF

C161100pF

Ro
Go
Bo
Ho
Vo

AV2_R1

AV2_L1

AV1_R1

AV1_L1

600 OHM

600 OHM

R124

47K 1/16W

AGND

10
11
12
13
14
15
16
17
18

8V

C147

C146

22pF

22pF

AGND

U103

1

Vcc

2

Rin1

3

Vcc

4

Gin1

5

Vcc

6

Bin1

7

Hin1

8

Vin1

9

GND
GND
Rin2
PS
Gin2
SEL
Bin2
Hin2
Vin2
NC

SyncSEP_I

SyncSEP_O

RN101

10K 1/16W
5
6
7
8

L108

L109 150 OHM

L110

L112 150 OHM

C148

C149

22pF

22pF

NC

Vcc

ROUT

GND

Vcc

GOUT

GND

Vcc

BOUT

GND

GBuf

Vcc
Vcc

HOUT

VOUT

GND

4
3
2
1

150 OHM

150 OHM

5
6
7
8

4.7K 1/16W

36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19

RN100

Ro

Go

Bo

R127

Ho
Vo

47uF/16V

C115
10uF/16V

+

C118
10uF/16V

+

C119
10uF/16V

+

C120
10uF/16V

+

4
3
2
1

NC

VSEL_HS 9
VSEL_VS 9

C129

+

AV2_R_1

AV2_L_1

AV1_R_1

AV1_L_1

C150

0.1uF

VSEL_R 9

VSEL_G 9

VSEL_B 9

VSEL_G 9

C100

0.1uF

AGND

ViewSonic Corporation N1750w

RN103 NC

Pr
Y
Pb

1
2
3
4

34

8
7
6
5

Ro
Go
Bo

12V_T

R102

2.5 2W

15

ANT_Cable

SCL4,5,6,9,11,14,15

SDA4,5,6,9,11,14,15

C165
100pF

L104
NC

C166

100pF

TU100

NC/AGC

1

2

TUNER

NC/Monitor

VCC

SCL

SDA

AS

3

4

5

6

75 1/16W

AGND

R101

9

NC

10

NC

11

18

16

17

CHASSIS

CHASSIS

CHASSIS

SIF

CVBS

VCC-IF

AF O/P CHASSIS

12

13

14

SIF_IN

L101

600 OHM

C102
47pF

R104

75 1/16W

L102

600 OHM

TUNER_SIF 11

L103

600 OHM

C101
47pF

AGND

2.5 2W

+

R103

C105

NC

3

VI VO

U101

GND

1

AGND

2

5V_A

C106
NC

AGND

C103

0.1uF

L105
NC

+

C107

NC

C104

+

100uF/16V

L106

600 OHM

1

R105

NC

R107

220 1/16W

5V

3

Q101

PMBS3904

2

L107

600 OHM

R106

75 1/16W

C109

0.1uF/16V

C110
47pF

+

100uF/16V

C108

TUNER_OUT 2

ViewSonic Corporation N1750w

35

AGND

AGND

VIN2:With Comb Filter
(3D_Y)/Without Comb
Filter (CVBS)

SVIDEO_C1

3D_C15

3D_Y15

SVIDEO_Y1

CC_FB14

CC_B14

CC_G14

CC_R14

INTERLACE_PB1

INTERLACE_Y1

INTERLACE_PR1

C241

22pF

C209

22pF

C210

22pF

C211

22pF

75 1/16W

L201

150 OHM

L200

150 OHM

L202

150 OHM

L203

150 OHM

C246

R227

0.68uF/16V

0.68uF/16V

R20975 1/16W

R20875 1/16W

R228

R21075 1/16W

75 1/16W

R20775 1/10W

AGND

R213 1K 1/16W

R214 3.6K 1/16W

R215 3.6K 1/16W

R216 3.6K 1/16W

330pF

75 1/16W

C203

0.001uF

C205

0.68uF/16V

C206

C208

R229

CIN

VIN1

VIN2

VIN3

R218

C242

0.1uF

4.7uF/16V

R219

1K 1/16W

VD_VOUT14

+

C212

C217

0.22uF

R220

1K 1/16W

1K 1/16W

R223 75 1/16W

R224 75 1/16W

R225 75 1/16W

C218

0.22uF

VIN4

C214

0.047uF

C216

0.22uF

C243

100pF

AGND

AGND

C244

C201

3.3pF

C202

3.3pF

C204

4.7uF/16V

+

C207

0.047uF

R206

100 1/16W

C245

100pF

100pF

C224
330pF

1M 1/16W

AGND

C225
330pF

VDDA

X200

20.25MHz

R205

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

C219 0.22uF

C220 0.22uF

C226
330pF

GNDF
VRT
I2CSEL
ISGND
VSUPF
VOUT
CIN
VIN1
VIN2
VIN3
VIN4
VSUPAI
GNDAI
VREF
FB1IN
AISGND

VDDI

C227

0.0015uF

63

62

61

60

64

NC

ASGF

XTAL1

XTAL2

B1/Cb1IN

G1/Y1IN

R1/Cr1IN

B2/Cb2IN

1

2

3

4

5

C221 0.22uF

C223

0.068uF

C228

390pF

R231
10K 1/16W

58

57

59

CLK5

VSTBY

FPDAT/VSYA

VPC3230D

G2/Y2IN

R2/Cr2IN

ASGF

6

7

8

C229

0.22uF

53

56

55

54

VS

AVO

MSY/HS

FSY/HC/HSYA

GNDD

FFRSTWIN

VSUPCAP

VSUPD

11

9

10

12

51

52

INTLC

GNDSY

VSUPSY

SCL

GNDCAP

SDA

13

14

50

C0

RESQ

15

+

49

16

46

47

48

C3

C2

C1

TEST

YCOEQ

VGAV

18

17

19

100 1/16W

C222
NC

R201 0 1/16W

R202 0 1/16W

R203 0 1/16W

R204 0 1/16W

43

41

42

44

45

GNDC

VSUPC

FFWE

FFIE

20

R217

C4

FFRSTW

22

21

R222

NC

C5

C6

FFRE

FFOE

23

U200

C7

VSUPY

GNDY

GNDLLC

VSUPLLC

LLC1
LLC2

VSUPPA

GNDPA

CLK20

24

Y0
Y1
Y2
Y3

Y4
Y5
Y6
Y7

R226

R230

VDDI

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

0.0015uF

VD_RST 5

75 1/16W

75 1/16W

100 1/16W

RP201

1

2

3

4

1

2

3

4

100 1/16W

100 1/16W

1

2

3

4

100 1/16W

1

2

3

4

R211 10 1/16W

R212 NC

C200

VDDI

8

7

6

5

8

7

6

5

RP202

RP200

8

7

6

5

RP203

8

7

6

5

C215

0.047uF

SDA 3,5,6,9,11,14,15

SCL 3,5,6,9,11,14,15

VD_VS 6

VD_HS 6,14

VD_VREF 6

VD_Field 6

C0

C1

C2

C3

C4

C5

C6

C7

Y0

Y1

Y2

Y3

Y4

Y5

Y6

Y7

EMI

C[0..7] 6

Y[0..7] 6

VD_CLK 6

C213

22pF

AGND

5V

L207
600 OHM

100uF/16V

C230

+

AGND

C232

0.1uF

C233

0.1uF

C234

0.1uF

VDDA

R200

0 1/16W

3.3VS

L208

600 OHM

10uF/16V

C231

ViewSonic Corporation N1750w

VDDI

+

C235

0.1uF

C236

0.1uF

C237

0.1uF

C238

0.1uF

C239

0.1uF

C240

0.1uF

36

3.3VM

C364

10uF/16V

R322

4.7K 1/16W

R325

C367

15pF

C369

15pF

C368

15pF

R381

R380

0 1/16W

0 1/16W

X300

12MHz

R334

1M 1/16W

3.3VM

Note: for ISP function

Internal ROM: CPUP16 pull LOW
External ROM: CPUP16 pull HIGH

WP

+

NC

C393

270pF

R360 10K 1/16W
R357 10K 1/16W
R338 10K 1/16W
R339 10K 1/16W
R340 NC

Remote1

U305

1

XIN

2

XOUT

3

FS1

4

LF

P2781

C370

15pF

SW300

SW

KEY_AD1

X301

32.768KHZ

VDD

FS0

MOUT

VSS

R389

510 1/16W

R300

0 1/16W

R333

0 1/16W

U304

1

A0

2

A1

3

A2

7

WP

M24C16-MN6T

R321 220 1/16W

VCC

SDA

R324

33 1/16W

R326

3.3VM

8
7
6
5

C392

0.1uF/16V

R335

0 1/16W

SCL

GND

4

C391

0.001uF

0 1/16W

C394

0.1uF

R387
10 1/16W

XTALI

XTALO

TESTMODE

PANPWR_ON

12VS

5VP

CPUP12

WP
SCL
SDA

CPUP15

CPUP32

VD_RST
PANPWR_ON
CPUP10
CPUP17

8

5
6

C378

0.1uF

F3

HWRST

AC21

EXTMCLK

A5

EXTDCLK

E2

EOSDCLK

T2

IRRECV

C5

ADC0

D5

ADC1

C2

TP314

L300

L309

600 OHM

4.7K 1/16W

75 1/16W

75 1/16W

NC

USB-DP

D2

USB-DM

D3

XTALIRTC

E3

XTALORTC

E1

XTALI

F2

XTALO

T1

TESTMODE

R336

10K 1/16W

R362 NC

R341 100K 1/16W
R342 100K 1/16W
R343 100K 1/16W
R344 100K 1/16W
R358 100K 1/16W
R359 100K 1/16W

3.3VM

R349

R353

R354

U300B SPV301A

Misc

ROMA0
ROMA1
ROMA2
ROMA3
ROMA4
ROMA5
ROMA6
ROMA7

ROMA16
ROMA17
ROMA18

ROMWRnn

P30-RXD

P31-TXD

P32-INT0nn

P34-T0
P35-T1

P36-WRnn

P37-RDnn

ALE_SCL

PSEN_SDA

32

Q301

1

PMBS3904

10K 1/16W

R350

4.7K 1/16W

SDA 3,4,6,9,11,14,15
SCL 3,4,6,9,11,14,15

P00
P01
P02
P03
P04
P05
P06
P07

P20
P21
P22
P23
P24
P25
P26
P27

P10
P11
P12
P13
P14
P15
P16
P17

P33

R337

J3
H1
L3
J1
K3
J2
K2
K1

L2
L1
M1
M3
M2
N1
N2
N3

AE3
AC7
AD5
AD7
AF3
AD6
AE4
AF4

AE5
AF5
AE6

AF6

H4
F1
G3
G2
J4
G1
H3
H2

P1
P2
P3
P4
R1
R2
R3
R4

F4
G4

CPUP32
SCL
SDA

CPUP00
CPUP01
CPUP02
CPUP03
CPUP04
CPUP05
CPUP06
CPUP07

CPUP20
CPUP21
CPUP22
CPUP23
CPUP24
CPUP25
CPUP26
CPUP27

ROMA0
ROMA1
ROMA2
ROMA3
ROMA4
ROMA5
ROMA6
ROMA7

CPUA16
CPUA17
CPUA18

ROMWRZ

CPUP10
VD_RST
CPUP12
PANPWR_ON

R323 100 1/16W
CPUP15

WP
CPUP17

TP313
TP312

TP300
PSENZ

COMP_SEL 1
VD_RST 4

ISP 9

R327 100 1/16W
R328 100 1/16W
R329 100 1/16W

R330 100 1/16W

1
2
3
4

Q300

S1
S1
S1
G1

AO4403

ROMA7
ROMA6
ROMA5
ROMA4
ROMA3
ROMA2
ROMA1
ROMA0
CPUP00

D1
D1
D1
D1

RX 9
TX 9
PWR_ON 12
SCL 3,4,6,9,11,14,15
SDA 3,4,6,9,11,14,15
LVDS_EN 13

8
7
6
5

+

C371
1uF/16V

5
6
7
8

9
10
11
12
13

PAN_PWR 1,13

CPUP24

CPUA16

CPUP27

A16

A15

A12

A7
A6
A5
A4

AT29LV040A-15JC

A3
A2
A1
A0
IO0

IO1

IO2

GND

14151617181920

CPUP02

CPUP01

3.3VM

CPUA18

CPUP03

BL_ADJ 1

CPUA17

ROMWRZ

512KB

3031321234

WE

A17

A18

VCC

A14
A13

A8
A9

A11

OE

A10

CE

IO7

IO3

IO4

IO5

IO6

CPUP05

CPUP06

CPUP04

+

100uF/16V

U310

29
28
27
26
25
24
23
22
21

U300D SPV301A

C366

CPUP26
CPUP25

CPUP20
CPUP21
CPUP23

PSENZ
CPUP22

CPUP07

SDRAM Port

MA0
MA1
MA2
MA3
MA4
MA5
MA6
MA7

MA8

MA9
MA10
MA11
MA12
MA13
MA14

DQM0L

DQM0H

DQM1L

DQM1H

MD0
MD1
MD2
MD3
MD4
MD5
MD6
MD7

MD8

MD9
MD10
MD11
MD12
MD13
MD14
MD15

MD16
MD17
MD18
MD19
MD20
MD21
MD22
MD23

MD24
MD25
MD26
MD27
MD28
MD29
MD30
MD31

WEnn

SDCLK

RASnn
CASnn

L26
L25
L24
K26
K25
K24
J26
J25

H26
H25
J24
J23
G26
H24
H23

N24
M26
M25
M24

AF25
AC22
AD23
AF26
AE24
AC23
AD24
AE25

AB24
AC25
AD26
AA24
AB25
AC26
AB26
Y24

W23
AA25
AA26
Y25
W24
Y26
W25
V24

W26
V25
U24
V26
U25
U26
T24
T25

AC24
AB23
AD25
AE26

MA0
MA1
MA2
MA3
MA4
MA5
MA6
MA7

MA8
MA9
MA10
MA11
MA12
MA13
MA14

DQML0
DQMH0
DQML1
DQMH1

MD0
MD1
MD2
MD3
MD4
MD5
MD6
MD7

MD8
MD9
MD10
MD11
MD12
MD13
MD14
MD15

MD16
MD17
MD18
MD19
MD20
MD21
MD22
MD23

MD24
MD25
MD26
MD27
MD28
MD29
MD30
MD31

WENN
SDCLK
RASNN
CASNN

3.3VM

DQML0

DQMH0

DQML1

DQMH1

CS

3.3VM

3.3VM

3.3VM

3.3VM

C381

C380

0.1uF

0.1uF

R345 22 1/16W

R347 22 1/16W

R351 22 1/16W

R355 22 1/16W

MDQML0

MDQMH0

MDQML1

MDQMH1

MCSNN

MAR0
MAR1
MAR2
MAR3
MAR4
MAR5
MAR6
MAR7
MAR8
MAR9
MAR10
MAR11
MAR13
MAR14
MAR12
SDCLKR

MCASNN
MRASNN

CKER
MDQMH0
MDQML0
MWENN
MCSNN

MAR0
MAR1
MAR2
MAR3
MAR4
MAR5
MAR6
MAR7
MAR8
MAR9
MAR10
MAR11
MAR13
MAR14
MAR12
SDCLKR

MCASNN
MRASNN

CKER
MDQMH1
MDQML1
MWENN
MCSNN

C382

0.1uF

3.3VM

SDCLK

CASNN

RASNN

WENN

U302

23
24
25
26
29
30
31
32
33
34
22
35
21
20
36
38

17
18

37
39
15
16
19

1
14
27

3

9
43
49 6

23
24
25
26
29
30
31
32
33
34
22
35
21
20
36
38

17
18

37
39
15
16
19

1
14
27

3

9
43
49 6

CKE

DQ0

A0

DQ1

A1

DQ2

A2

DQ3

A3
A4

DQ4

A5

DQ5

A6

DQ6

A7

DQ7

A8

DQ8

A9

DQ9

A10

DQ10

A11

DQ11

BS1/A12

DQ12

BS0/BA

DQ13

NC

DQ14
DQ15

CLK

CAS
RAS

CKE
DQMU
DQML
WE
CS

GND

VCC

GND

VCC

GND

VCC

VCCQ

VSSQ

VCCQ

VSSQ

VCCQ

VSSQ

VCCQ VSSQ

GTL540L16

U303

DQ0

A0

DQ1

A1

DQ2

A2

DQ3

A3
A4

DQ4

A5

DQ5

A6

DQ6

A7

DQ7

A8

DQ8

A9

DQ9

A10

DQ10

A11

DQ11

BS1/A12

DQ12

BS0/BA

DQ13

NC

DQ14
DQ15

CLK

CAS
RAS

CKE
DQMU
DQML
WE
CS

GND

VCC

GND

VCC

GND

VCC

VCCQ

VSSQ

VCCQ

VSSQ

VCCQ

VSSQ

VCCQ VSSQ

GTL540L16

C383

0.1uF

R346 22 1/16W

R348 22 1/16W

R352 22 1/16W

R356 22 1/16W

CKER

C384

0.1uF

SDCLKR

MCASNN

MRASNN

MWENN

MD0

27

C373

0.1uF

MD1
MD2
MD3

MD4
MD5
MD6
MD7

MD8
MD9
MD10
MD11

MD12
MD13
MD14
MD15

MA0
MA1
MA2
MA3

MA4
MA5
MA6
MA7

MA8
MA9
MA10
MA11

MA12
MA13
MA14

MD16
MD17
MD18
MD19

MD20
MD21
MD22
MD23

MD24
MD25
MD26
MD27

MD28
MD29
MD30
MD31

C374

0.1uF

2

MDR0

4

MDR1

5

MDR2

7

MDR3

8

MDR4

10

MDR5

11

MDR6
MDR7

13
42

MDR8

44

MDR9

45

MDR10

47

MDR11

48

MDR12
MDR13

50
51

MDR14

53

MDR15

28
41
54

52
46
12

2

MDR16

4

MDR17
MDR18

5

MDR19

7

MDR20

8
10

MDR21

11

MDR22
MDR23

13

MDR24

42

MDR25

44
45

MDR26
MDR27

47
48

MDR28
MDR29

50
51

MDR30
MDR31

53

28
41
54

52
46
12

C386

C385

0.1uF

0.1uF

3.3VM

3.3VM

1

14

C372

0.1uF

3.3VM

5
6
7
8

5
6
7
8

5
6
7
8

5
6
7
8

5
6
7
8

5
6
7
8

5
6
7
8

5
6
7
8

5
6
7
8

5
6
7
8

5
6
7
8

5
6
7
8

RN300

RN307

RN308

RN309

RN310

RN311

RN312

RN313

RN314

RN315

RN316

RN317

3

22 1/16W

4
3
2
1

22 1/16W

4
3
2
1

22 1/16W

4
3
2
1

22 1/16W

4
3
2
1

22 1/16W

4
3
2
1

22 1/16W

4
3
2
1

22 1/16W

4
3
2
1

22 1/16W

4
3
2
1

22 1/16W

4
3
2
1

22 1/16W

4
3
2
1

22 1/16W

4
3
2
1

22 1/16W

4
3
2
1

9

C375

0.1uF

MDR0
MDR1
MDR2
MDR3

MDR4
MDR5
MDR6
MDR7

MDR8
MDR9
MDR10
MDR11

MDR12
MDR13
MDR14
MDR15

MAR0
MAR1
MAR2
MAR3

MAR4
MAR5
MAR6
MAR7

MAR8
MAR9
MAR10
MAR11

MAR12
MAR13
MAR14

MDR16
MDR17
MDR18
MDR19

MDR20
MDR21
MDR22
MDR23

MDR24
MDR25
MDR26
MDR27

MDR28
MDR29
MDR30
MDR31

43

C376

0.1uF

49

C300

0.1uF

C377

0.1uF

ViewSonic Corporation N1750w

37

U300A

D20 B23

CLKA CHS

B24

HSA

C22

VSA

C21

PCHS_SOG

F26

DATA_PA0

G25

DATA_PA1

G24

DATA_PA2

F25

DATA_PA3

E26

DATA_PA4

G23

DATA_PA5

F24

DATA_PA6

E25

DATA_PA7

D26

DATA_PA8

F23

DATA_PA9

E24

DATA_PA10

D25

DATA_PA11

C26

DATA_PA12

E23

DATA_PA13

D24

DATA_PA14

C25

DATA_PA15

B26

DATA_PA16

D23

DATA_PA17

B25

DATA_PA18

A26

DATA_PA19

D22

DATA_PA20

C24

DATA_PA21

D21

DATA_PA22

C23

DATA_PA23

C14

DATA_PB0

A13

DATA_PB1

B13

DATA_PB2

C13

DATA_PB3

A12

DATA_PB4

B12

DATA_PB5

C12

DATA_PB6

A11

DATA_PB7

B11

DATA_PB8

C11

DATA_PB9

A10

DATA_PB10

B10

DATA_PB11

C10

DATA_PB12

A9

DATA_PB13

B9

DATA_PB14

C9

DATA_PB15

A8

DATA_PB16

B8

DATA_PB17

C8

DATA_PB18

A7

DATA_PB19

B7

DATA_PB20

A6

DATA_PB21

D8

DATA_PB22

C7

DATA_PB23

T26

CLKC_CPV

R25

DATA_PC0_CPH

R24

DATA_PC1_STH1

R26

DATA_PC2_RLS

P24

DATA_PC3_LP

P25

DATA_PC4_POL

P26

DATA_PC5_SHC

N26

DATA_PC6_INV1

N25

DATA_PC7_INV2

U301 PCA9554D

A0

A1

A2

I/O0

I/O1

I/O2

I/O3

VSS I/O4

VDD

SDA

SCL

INT

I/O7

I/O6

I/O5

CVS_COAST

16

15

14

13

12

11

10

A25

CLAMP

A24

5VP

5V

R374

R375

NC

NC

R3131K 1/16W

R315 100 1/16W

R317 100 1/16W

R319 100 1/16W

R320 100 1/16W

audio
AV1
SCART
PC
SVIDEO

CLK_ADC
HS_ADC
VS_ADC

R331 NC

PB16

VHREF
VDEN

video
AV1
SCART
TUNER

ROUT0
ROUT1
ROUT2
ROUT3
ROUT4
ROUT5
ROUT6
ROUT7

GOUT0
GOUT1
GOUT2
GOUT3
GOUT4
GOUT5
GOUT6
GOUT7

BOUT0
BOUT1
BOUT2
BOUT3
BOUT4
BOUT5
BOUT6
BOUT7

C0
C1
C2
C3
C4
C5
C6
C7

Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7

1

2

3

4

5

6

7

8 9

AD_CLK9
AD_HS9
AD_VS9

AD_SOG9

ROUT[0..7]9

GOUT[0..7]9

BOUT[0..7]9

C[0..7]4

Y[0..7]4

TP306 TP

VD_VS4
VD_CLK4
VD_VREF4
VD_Field4
VD_HS4,14

W_ENABLE1

CH_SEL12

CH_SEL22

CH_SEL32

SEL1

SEL2

0

0

1

0
1

0

1

1

VVS

VCLKB

VFIELD

VHS
TP307 TP
TP308 TP

R309 100 1/16W

R310 100 1/16W

R311 100 1/16W

R312 100 1/16W

R314 100 1/16W

R316 100 1/16W

R318 100 1/16W

SEL3
0
1
1
1

R363 100K 1/16W

R364

R367

R366100K 1/16W

R365100K 1/16W

DACV3

DACV3

VIDEO_SEL for ADC input selection
(source :HD & VGA)

COAST 9

AD_Clamp 9

100K 1/16W

100K 1/16W

3.3VM

R305
91K 1/16W

C356

0.1uF

C357

0.1uF

C358

0.1uF

C360

0.1uF

C361

0.1uF

C362

0.1uF

CBU

CBL

R306

RSET

1.5K 1/16W

R307
91K 1/16W

R308

9.1K 1/16W

Change to 5VP
will increase
the Power
Consumption
about

0.4~0.5W

SDA 3,4,5,9,11,14,15

SCL 3,4,5,9,11,14,15

MUTE 1,10

SRS_CTL 10

VIDEO_SEL 2

100 1/16W

R371

VREF

5VP

AD10

AD13

AC13

AF12

AF11

R370

NC

Q302
NC

AE9

AD9

AF8

U300C

SPV301A

Display Port

CBU

CBL

RSET

VREF

VMCBU

VMCBL

VMRSET

VMREF

INV_PRO 1

CLK1
CLK2

VSOUT
HSOUT

DEN

VOUT0
VOUT1
VOUT2
VOUT3
VOUT4
VOUT5
VOUT6
VOUT7

VOUT8

VOUT9
VOUT10
VOUT11
VOUT12
VOUT13
VOUT14
VOUT15

VOUT16
VOUT17
VOUT18
VOUT19
VOUT20
VOUT21
VOUT22
VOUT23

VOUT24
VOUT25
VOUT26
VOUT27
VOUT28
VOUT29
VOUT30
VOUT31

VOUT32
VOUT33
VOUT34
VOUT35
VOUT36
VOUT37
VOUT38
VOUT39

VOUT40
VOUT41
VOUT42
VOUT43
VOUT44
VOUT45
VOUT46
VOUT47

AROUT
AGOUT
ABOUT

SVMOUT

Y4
AA4

AD2
AD1

AC4

U1
T3
U2
U3
V1
V2
V3
W1

Y1
W2
W3
W4
Y2
Y3
AA1
AA2

AA3
AB1
AB2
AB3
AB4
AC1
AC2
AC3

AE1
AD3
AE2
AC5
AF1
AD4
AC6
AF2

AD18
AF19
AE19
AF20
AD19
AE20
AF21
AD20

AE21
AF22
AD21
AE22
AF23
AF24
AD22
AE23

AF7
AF9
AF10

AE13

PCK1

PVSOUT
PHSOUT

PDENOUT

TROUT
TGOUT
TBOUT

R301 100 1/16W

R302 100 1/16W
R303 100 1/16W

R304 100 1/16W

RN301

4
3
2

RN302

1
4
3

22 1/16W

2
1

RN303

4

22 1/16W

3
2

RN304

1
4
3

22 1/16W

2
1

RN305

4

22 1/16W

3
2

RN306

1
4
3

22 1/16W

2
1

22 1/16W

TP309 TP
TP310 TP
TP311 TP

B0
B1
B2
B3
B4
B5
B6
B7

G0
G1
G2
G3
G4
G5
G6
G7

R0
R1
R2
R3
R4
R5
R6
R7

CN300

CONN

C389

22pF

22pF

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
30
31
32
33
34
35
36

R372 22 1/16W

37

R373 22 1/16W
38
39
40

C390

22pF

5
6
7
8
5
6
7
8

5
6
7
8
5
6
7
8

5
6
7
8
5
6
7
8

P_CLK

P_VS
P_HS

P_DATAEN

C388

C359 10uF/16V

5
6
7
8
5
6
7
8
5
6
7
8
5
6
7
8
5
6
7
8
5
6
7
8
5
6
7
8
5
6
7
8

C363

10uF/16V

C387
22pF

B[0..7] 1,13

G[0..7] 1,13

R[0..7] 1,13

+

4
3
2
1
4
3
2
1
4
3
2
1
4
3
2
1
4
3
2
1
4
3
2
1
4
3
2
1
4
3
2
1

+

P_CLK 1,13

P_VS 1,13
P_HS 1,13

P_DATAEN 1,13

C397

0.1uF

RN327
22 1/16W

RN320
22 1/16W

RN321
22 1/16W

RN322
22 1/16W

RN323
22 1/16W

RN324
22 1/16W

RN325
22 1/16W

RN326
22 1/16W

C396

0.1uF

L311

300 OHM

FM0
FM1
FM2
FM3
FM4
FM5
FM6
FM7
FM8
FM9
FM10
FM11
FM17
FM18
FM19
FM20
FM21
FM22
FM23
FM24
FM25
FM26
FM27
FM28
FM29
FM30
FM31
FM32
FM33
FM34
FM35
FM36
FM37
FM38

L310

300 OHM

FM0
FM1
FM2
FM3
FM4
FM5
FM6
FM7

FM8
FM9
FM10

FM11
TP301 TP
TP302 TP
TP303 TP
TP304 TP

TP305 TP

FM17

FM18

FM19

FM20

FM21

FM22

FM23

FM24

FM25

FM26

FM27

FM28

FM29

FM30

FM31

FM32

FM33

FM34

FM35

FM36

FM37

FM38

3.3VM

5V

B22
A23
A22
B21
A21
A20
C20
B20

C19
A19
B19
C18
B18
A18
A17
C17

B17
A16
B16
C16
A15
B15
C15
A14

B14
AC14
AE14
AD14
AF15
AE15
AD15
AF16

AE16
AD16
AF17
AE17
AD17
AF18
AE18

U300E

FM0
FM1
FM2
FM3
FM4
FM5
FM6
FM7

FM8
FM9
FM10
FM11
FM12
FM13
FM14
FM15

FM16
FM17
FM18
FM19
FM20
FM21
FM22
FM23

FM24
FM25
FM26
FM27
FM28
FM29
FM30
FM31

FM32
FM33
FM34
FM35
FM36
FM37
FM38

SPV301A

Storage Port

ViewSonic Corporation N1750w

38

3.3VM

3.3VM

2.5V

2.5V

3.3VM

3.3VM

L301

600 OHM

L303

600 OHM

L305

600 OHM

L307

600 OHM

UPLLVDD

C324

+

10uF/16V

MPLLVDD

C330

+

10uF/16V

ADCV3

C347

+

10uF/16V

DACV3

C353

+

10uF/16V

2.5V

2.5V

3.3VM

3.3VM

L302

600 OHM

L304

600 OHM

L306

600 OHM

L308

600 OHM

OPLLVDD

C325

+

10uF/16V

DPLLVDD

C331

+

10uF/16V

VMV3

C348

+

10uF/16V

USBVDD3

C354

+

10uF/16V

UPLLVDD

MPLLVDD

OPLLVDD

DPLLVDD

A4

AF13

D7

B5

C303 0.1uF

C307 0.1uF

C311

0.1uF

C315 0.1uF

2.5V

A4

C6

AF13

AF14

D7

B6

B5

D6

AC8

AC11

AC15

AC16

AC17

D9

D10

D11

D17

D18

D19

K4

K23

L4

L23

T23

U4

U23

V4

V23

AC12

D16

T4

D15

L12

L13

L14

L15

L16

M11

M16

N11

N16

P11

P16

R11

R16

T11

T12

T13

T14

T15

T16

L11

R13

R14

R15

U300F

SPV301A

UPLLVDD25
UPLLVSS25

MPLLVDD25
MPLLVSS25

OPLLVDD25
OPLLVSS25

DPLLVDD25
DPLLVSS25

Power and Ground

DVDD25_1
DVDD25_2
DVDD25_3
DVDD25_4
DVDD25_5
DVDD25_6
DVDD25_7
DVDD25_8
DVDD25_9
DVDD25_10
DVDD25_11
DVDD25_12
DVDD25_13
DVDD25_14
DVDD25_15
DVDD25_16
DVDD25_17
DVDD25_18
DVDD25_19
DVDD25_20

DVSS25_1
DVSS25_2
DVSS25_3

DVSS25_TB1
DVSS25_TB2
DVSS25_TB3
DVSS25_TB4
DVSS25_TB5
DVSS25_TB6
DVSS25_TB7
DVSS25_TB8
DVSS25_TB9
DVSS25_TB10
DVSS25_TB11
DVSS25_TB12
DVSS25_TB13
DVSS25_TB14
DVSS25_TB15
DVSS25_TB16
DVSS25_TB17
DVSS25_TB18
DVSS25_TB19
DVSS25_TB20
DVSS25_TB21
DVSS25_TB22
DVSS25_TB23
DVSS25_TB24

ADCVDD33

ADCVSS33

RVDD33

RVSS33

UVDD33

UVSS33

AVDD33_1
AVDD33_2
AVDD33_3
AVDD33_4

AVSS33_1
AVSS33_2
AVSS33_3
AVSS33_4

DVDD33_1
DVDD33_2
DVDD33_3
DVDD33_4
DVDD33_5
DVDD33_6
DVDD33_7
DVDD33_8

DVDD33_9
DVDD33_10
DVDD33_11
DVDD33_12
DVDD33_13
DVDD33_14
DVDD33_15
DVDD33_16

DVSS33_1
DVSS33_2
DVSS33_3
DVSS33_4
DVSS33_5
DVSS33_6
DVSS33_7

DVSS33_TB1
DVSS33_TB2
DVSS33_TB3
DVSS33_TB4
DVSS33_TB5
DVSS33_TB6
DVSS33_TB7
DVSS33_TB8

DVSS33_TB9
DVSS33_TB10
DVSS33_TB11
DVSS33_TB12
DVSS33_TB13

B4

A3

C4

B3

E4

D1

AE7

AD8

AE8

AD12

AE10

AD11

AE11

AE12

AA23

AC9

AC10

AC18

AC19

AC20

D12

D13

D14

M4

M23

N4

N23

P23

R23

Y23

A1

A2

B1

B2

C1

C3

D4

M12

M13

M14

M15

N12

N13

N14

N15

P12

P13

P14

P15

R12

C306 0.1uF

C310 0.1uF

C314

B4

C4

E4

SW_DACV3

AD12

0.1uF

3.3VM

ADCV3

3.3VM

USBVDD3

DACV3

C332

0.1uF

VMV3

2.5V

C301 0.1uF

C304 0.1uF

C308 0.1uF

C312 0.1uF

C316 0.1uF

C318 0.1uF

C320 0.1uF

C322 0.1uF

C326 0.1uF

C328 0.1uF

C333 0.1uF

C335 0.1uF

C337 0.1uF

C339 0.1uF

C341 0.1uF

C343 0.1uF

C345 0.1uF

C349 0.1uF

U2.AA23

U2.AC9

U2.AC10

U2.AC18

U2.AC19

U2.AC20

U2.D12

U2.D13

U2.AC8

U2.AC11

U2.AC15

U2.AC16

U2.AC17

U2.D9

U2.D10

U2.D11

U2.D17

U2.V4

2.5V

DACV3

C302 0.1uF

C305 0.1uF

C309 0.1uF

C313 0.1uF

C317 0.1uF

C319 0.1uF

C321 0.1uF

C323 0.1uF

C327 0.1uF

C329 0.1uF

C334 0.1uF

C336 0.1uF

C338 0.1uF

C340 0.1uF

C342 0.1uF

C344 0.1uF

C346 0.1uF

C350 0.1uF

C351 0.1uF

C352 0.1uF

C355 0.1uF

U2.D14

U2.M4

U2.M23

U2.N4

U2.N23

U2.P23

U2.R23

U2.Y23

U2.D18

U2.D19

U2.K4

U2.K23

U2.L4

U2.L23

U2.T23

U2.U4

U2.U23

U2.V23

U2.AE7

U2.AE8

U2.AD8

ViewSonic Corporation N1750w

39

ZD500

MLL752A

3.3VA

VGA_HS

VGA_SDA

AGND

ZD502
MLL752A

VGA_VS

NC

1K 1/16W

AGND

RX

VGA_VS

AGND

D503

MLL4148

R512

VGA_SCL

VGA_SDA

R513

L501

600 OHM

L502

600 OHM

L503

600 OHM

11

12

13

14

15

VGA_SCL

ZD501
MLL752A

ZD503
MLL752A

AGND

5V

CN501

17

16

U500

8

VCC

7

VCLK

6

SCL

5

24LC21A/SN

1

6

2

7

3

8

4

9

5

10

DB15

D504

MLL4148

5VD_ADDC

NC
NC
NC

VSSSDA

3.3V_AP

3.3V_AD

3.3VDD

TX

AGND

R508

4.7K 1/16W

1

C523

2

0.1uF

3

4

AGND

2

D500

BAV99

RED

GREEN

BLUE

5VP

R509

4.7K 1/16W

1

3

L504

600 OHM

R500

1K 1/16W

VGA_VS 2

VGA_HS 2

TX

TX 5

RX

RX 5

CN500

2

4

6

8

10

2

D501

BAV99

CONN

3

600 OHM

1

3

5

7

9

1

L505

SCL3,4,5,6,11,14,15

SDA3,4,5,6,11,14,15

5VP

D502

BAV99

2

1

AGND

3

L506

600 OHM

ISP 5

C502

0.1uF

VGA_R 2

VGA_G 2

VGA_B 2

100uF/16V

3.3V_AP

C524

10uF/16V

C513

+

SCL3,4,5,6,11,14,15

SDA3,4,5,6,11,14,15

3.3V_AD

+

C526

0.1uF

VSEL_B2

VSEL_G2

VSEL_R2

R506

75 1/16W

R507

75 1/16W

C514

0.1uF

C527

0.1uF

C515

0.1uF

C528

0.1uF

AGND

AD_Clamp6

COAST6

C505

0.47uF/50V

C506

0.47uF/50V

C508

0.47uF/50V

C516

0.1uF

C529

0.1uF

C507

0.001uF

C509

0.1uF

3.3V_AD

AD_SOG6

C517

0.1uF

100uF/16V

AGND

C518

0.1uF

C525

R503

1K 1/16W

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

AD9883A

+

C501

0.1uF

AGND

40

U501

GND
VD
BAIN
GND
VD
VD
GND
GAIN
SOGIN
GND
VD
VD
GND
RAIN
A0
SCL
SDA
REF BYPASS
VD
GND

61

C520

C519

0.1uF

0.1uF

3.3VDD

C530

0.1uF

39

38

37

VD

GND

CLAMP

MIDSCV

GNDVDGND

VSOUT

64

63

62

C531

0.1uF

3.3V_AP

36

35

34

PVD

GND

SOGOUT

HSOUT

67

66

65

C521

0.1uF

AGND

R501

2.7K 1/16W

C500

0.0082uF

33

32

31

30

29

28

PVD

FILT

GND

COAST

VSYNC

HSYNC

DATACLK

GND

VDDR7R6R5R4R3R2R1R0

73

72

71

70

69

68

R510

75 1/16W

R511

75 1/16W

C522

0.1uF

C532

C533

0.1uF

0.1uF

C503

0.082uF

27

26

VD

GND

75

74

VD

25

GND

76

24

23

22

VDD

VDD

GND

VDD

VDD

79

78

77

L500

120 OHM

C511

100pF

C534

0.1uF

R505

1K 1/16W

21

GND

GND

B0
B1
B2
B3
B4
B5
B6
B7

VDD

GND

G0
G1
G2
G3
G4
G5
G6
G7

GND

GND

80

AD_HS 6

C512

100pF

C535

0.1uF

R502

22 1/16W

3.3VDD

AGND

20

19

18

17

16

15

14

13

12

11

RP500 100 1/16W

10

9

RP502

8

7

6

5

4

3

2

1

AD_VS 6

RP501

100 1/16W

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

RP503

100 1/16W

100 1/16W

1

2

3

4

1

2

3

4

100 1/16W

C537
NC

AGND

C504

33pF

RP504

RP505

R504
22 1/16W

BOUT0

8

7

BOUT1

6

BOUT2

BOUT3

5

8

BOUT4

BOUT5

7

6

BOUT6

BOUT7

5

100 1/16W

8

GOUT0

7

GOUT1

GOUT2

6

5

GOUT3

8

GOUT4

7

GOUT5

6

GOUT6

5

GOUT7

ROUT0

8

ROUT1

7

6

ROUT2

ROUT3

5

ROUT4

8

ROUT5

7

ROUT6

6

ROUT7

5

VSEL_VS 2

VSEL_HS 2

C536

1000pF

AGND

BOUT[0..7] 6

GOUT[0..7] 6

ROUT[0..7] 6

AD_CLK 6

ViewSonic Corporation N1750w

40

8V

L_OUT11

R_OUT11

For without SRS

R600NC

R617NC

C639

0.47uF/50V

100K 1/16W

47K 1/16W

C641

0.0047uF

C6590.001uF

3.9K 1/16W

R637

1K 1/16W

R614

100 1/16W

R616

R618

4.7K 1/16W

R627

3.9K 1/16W

R631

3.9K 1/16W

R635

R613

100 1/16W

R615

1K 1/16W

31.6K 1/16W

0.47uF/50V

R620

3.9K 1/16W

R621

R622

1.5K 1/16W

R619

C640

EAR_L1

EAR_R1

L610

150 OHM

C646

100uF/16V

+

1

OUT1 VDD

2

IN1- OUT2

3

IN1+ IN2-

4

GND IN2+

U600

1

2

3

4

5

M62438FP

C642

+

2.2uF/16V

R623

100 1/16W

U603

PT2308S

8V

VCC

REF IN

IN R

IN L

DIFF

OUT L

FILTER

CNTL

OUT R GND

R626

10K 1/16W

8

7

6

5

3.9K 1/16W

CN601

PC_AUDIO

10

9

8

7

6

R632

1

5

4

3

2

C648

100uF/16V

+

C652

100uF/16V

C638
22uF/16V

+

C643

+

2.2uF/16V

R624

100 1/16W

+

C6580.001uF

L605

150 OHM

SRS_CTL 6

R648 0 1/16W

R633

10K 1/16W

L604

150 OHM

L600

150 OHM

5V_A

C634

560pF

R654

4.7K 1/16W

MUTE1,6

C635
560pF

PRE_L

PRE_R

PC_L 11

PC_R 11

R655

4.7K 1/16W

R646

NC

R628

1K 1/16W

R647

NC

R634

1K 1/16W

C6570.001uF

R639

10K 1/16W

Comp_L1

Comp_R1

C6560.001uF

R636

PMBS3904

1K 1/16W

1

Q600

R630

1K 1/16W

R629

10K 1/16W

C650

1uF

C651

10uF/16V

3

2

R609

10K 1/16W

C632

+

10uF/16V

C633

+

10uF/16V

R611

4.7K 1/16W

12V_A

R625

10K 1/16W

C647
1uF

C649

+

10uF/16V

+

R640

10K 1/16W

R643

R649

4.3 3W

4.3 3W

150 OHM

C655

0.1uF

7

9

13

14

8

1

10

11

20

R610

10K 1/16W

R612

4.7K 1/16W

L607

IN1

ST_BY

S_GND

IN2

MUTE

PW_GND
PW_GND
PW_GND
PW_GND

TDA7266D

R644

R650

6

VCC

U602

4.3 3W

4.3 3W

15

VCC

L608

150 OHM

OUT1+

OUT1-

OUT2+

OUT2-

C654

0.1uF

+

C644

220uF/16V

2

5

19

16

Comp_L_1 2

Comp_R_1 2

C645

0.1uF

L611

150 OHM

L612

C662

150 OHM

0.001uF

C663

L613

0.001uF

150 OHM

L614

C664

150 OHM

0.001uF

C665

0.001uF

EAR_R

PRE_R

PRE_L

EAR_L

Audio_L+ 1

C666

0.001uF

Audio_L- 1

Audio_R+ 1

C667

0.001uF

Audio_R- 1

LP600

5

6

7

8

120 OHM(8P4R)

4

3

2

1

CP600

22pF

CN600

5

4

3

2

1

CONN

8

7

6

5

L606

150 OHM

4

3

2

1

R638

1K 1/16W

+

C653

10uF/16V

R645 0 1/10W

AGND

ViewSonic Corporation N1750w

AUDIO_GND

41

TUNER_SIF3

5V_A

C661

0.1uF

C660

10uF/16V

5V_A

C614

10uF/16V

R607

4.7K 1/16W

5V_A

SCL3,4,5,6,9,14,15

SDA3,4,5,6,9,14,15

+

+

R602

100 1/16W

R604

100 1/16W

C615

0.0015uF

C616

220pF

C617

470pF

5V_A

600 OHM

L602

1

SCL

2

SDA

3

I2S_CL

4

I2S_WS

5

I2S_DA_OUT

6

I2S_DA_IN1

7

ADR_DA

8

ADR_WS

9

ADR_CL

10

DVSUP

11

DVSS

12

I2S_DA_IN2

13

NC

14

NC

15

NC

16

RESETQ

62

63

64

NC

ADR_SEL

STANDBYQ

C601

3.3pF

X600

18.432MHz

56

57

58

59

60

61

NC

NC

NC

D_CTR_I/OUT1

D_CTR_I/OUT0

U601

MSP3455

C602

3.3pF

53

54

55

TP

XTAL_IN

XTAL_OUT

C603

56pF

50

51

52

NC

ANA_IN-

TESTEN

VREFTOP

SC1_IN_R

SC1_IN_L

SC2_IN_R

SC2_IN_L

C604
56pF

C605

100uF/16V

49

AVSUP

AVSS

ANA_IN1+

MON_IN

ASG

ASG

NC
NC
NC
NC
NC

AGNDC

AHVSS

48

47

46

45

44

43

42

41

40

39

38

37

36

35

34

33

L601

600 OHM

+

C606

470pF

C608

0.1uF

C607

0.0015uF

C609

+

10uF/16V

C622

0.1uF

C610

+

1uF/16V

+

C611

1uF/16V

+

C612

1uF/16V

+

C613

1uF/16V

C618

330pF

C619

330pF

C620

330pF

470 1/16W

470 1/16W

470 1/16W

470 1/16W

C621

330pF

R601

ASEL_O_R 2

R603

ASEL_O_L 2

R605

PC_R 10

R606

PC_L 10

+

C623

22uF/16V

R608

0 1/16W

NCNCVREF2

17

C627

1uF/16V

R_OUT10

L_OUT10

1uF/16V

+

+

C629

C630

0.001uF

0.001uF

18

19

C631

DACM_R

DACM_LNCNCNCNCNCVREF1

20

21

22

23

24

25

26

SC1_OUT_R

SC1_OUT_L

27

28

29

30

NC

AHVSUP

CAPL_M

31

32

+

C625

10uF/16V

R641

100 1/16W

R642

100 1/16W

C600

0.0015uF

+

C624

3.3uF/16V

C628

470pF

+

10uF/16V

LINE_O_L 1

LINE_O_R 1

8V

C626

L603

600 OHM

ViewSonic Corporation N1750w

42

0

+5VP

45

L701

L

13

C725

0.1uF

AGND

R701

47K 1/16W

R702
22K 1/16W

PWR_ON5

Q702

PMBS3904

3

1

2

AGND

1

2

3

4

C705

0.1uF

5VP

Q701

S1
S1
S1
G1

AO4403

5VP

D1
D1
D1
D1

C706

47uF/16V

AGND

8

7

6

5

+

5V

5V

R703
3K 1/16W

AGND

10uF/16V

L712

L711

600 OHM

10uF/16V

C701

600 OHM

C707

U701

3

VI VO

C702

+

+

0.1uF

C700

0.1uF

U702

3

VI VO

U700

3

VI VO

1

AGND

1

AGND

2

GND

2

GND

2

L702

600 OHM

C703

10uF/16V

L703

600 OHM

C708

10uF/16V

L704

600 OHM

3.3VS

12VP : From Power Supply12V

8V :FOR MSP3455G/M62438/uPD64038

+

C704

0.1uF

5V : For Tuner/VPC3230D/MSP3455G/
TVP5150/PT2308/PT2314/Z86129/uPD64

3.3VS : For Video Decoder VPC3230D
/ Teltext SAA5264

3.3VA : For ADC AD9883

3.3VA

3.3VM : For Scaler spv301

2.5V : For Scaler spv301

12V_A : For Audio AMP TDA7266D

+

C709

0.1uF

3.3VM

12V_T : For tuner boost

R716 0 1/10W

R715 0 1/10W

R714 0 1/10W

5VP : From Power Supply 5V

12VP

C719

10uF/16V

R705

22K 1/16W

45

+

AGND

1

Q703

PMBS3904

L707

L

3

2

AGND

AGND

13

R704

47K 1/16W

C722

0.1uF

AGND

12VS

AO3401

+

C710

100uF/16V

12V

Q700

C726

0.1uF

AGND

R719

R718

L709

600 OHM

L700

600 OHM

C711

10uF/16V

6.2 1W

6.2 1W

C715

10uF/16V

C720

10uF/16V

12V_A

12V_T

+

+

0.1uF

2.5V

C724

C714

0.1uF

C718

0.1uF

8V

+

10uF/16V

AGND

C721

R712 0 1/10W

R711 0 1/10W

R515

R516

AGND

0 1/10W

0 1/10W

AGND

C712

0.1uF

C716

0.1uF

C723

0.1uF

3

U704

3

VI VO

GND

1

AGND

U703

VI VO

GND

1

AGND

GND

1

2

2

AGND

+

+

+

C713

47uF/16V

L706

600 OHM

C717

47uF/16V

L708

600 OHM

R700

120 1/16W

R706

620 1/8W

ViewSonic Corporation N1750w

43

3.3VM

L802

600 OHM

C801

0.1uF

P_CLK1,6

R[0..7]1,6

G[0..7]1,6

B[0..7]1,6

P_Hs1,6

P_Vs1,6

P_DATAEN1,6

R803

3.3VM

LVDS_EN5

NC

R800

0 1/16W

R802

10K 1/16W

C802

0.1uF

R0

R1

R2

R3

R4

R5

R6

R7

G0

G1

G2

G3

G4

G5

G6

G7

B0

B1

B2

B3

B4

B5

B6

B7

31

51

52

54

55

56

3

50

2

4

6

7

11

12

14

8

10

15

19

20

22

23

24

16

18

27

28

30

25

17

32

C803

0.1uF

1K 1/16W

CLKIN

TXIN0
TXIN1
TXIN2
TXIN3
TXIN4
TXIN6
TXIN27
TXIN5
TXIN7
TXIN8
TXIN9
TXIN12
TXIN13
TXIN14
TXIN10
TXIN11
TXIN15
TXIN18
TXIN19
TXIN20
TXIN21
TXIN22
TXIN16
TXIN17
TXIN24
TXIN25
TXIN26
TXIN23

VCC

PWRDN

R805

R806
1K 1/16W

1

9

26

VCC1

VCC2

VCC3

U800

NT7181FQ

GND1

GND2

GND3

GND4

GND5

34

44

PVCC

OVCC

TXOUT0
TXOUT0

TXOUT1

TXOUT1

TXOUT2

TXOUT2

TXOUT3

TXOUT3

TXCOUT

TXCOUT

PGND1

OGND1

OGND2

OGND3

C800

0.1uF

47

48

45

46

41

42

37

38

39

40

PGND2

TXA0m

TXA0p

TXA1m

TXA1p

TXA2m

TXA2p

TXA3p

TXACKp

L800

600 OHM

L801

600 OHM

C805

0.1uF

C810

5P

C811

C813

C814

3.3VM

+

C804

10uF/16V

PAN_PWR1,5

C812

5P

C806

10uF/16V

L803NC

U802

1

IN OUT

2

+

C807

0.1uF

3

GND

LM3940S-3.3

C809

+

10uF/16V

C808

0.1uF

1K 1/16W

CN800

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

CONN

R801

R804

5

13

ViewSonic Corporation N1750w

21

29

53

36

44

43

49

33

35

5V_CC

VD_VOUT

C401

+

10uF/16V

R401

22K 1/16W

R403

470 1/16W

R405

22K 1/16W

SDA3,4,5,6,9,11,15

SCL3,4,5,6,9,11,15

VD_HS4,6

1

C409

0.068uF

R402
47 1/16W

3

Q401
PMBS3904

2

C402 0.1uF

R406
470 1/16W

C400

0.0068uF

R408

6.8K 1/16W

R404

470 1/16W

C407

560pF

C408

0.1uF

R413 100 1/16W

R414 100 1/16W

R400 100 1/16W

U401

13

VIN/INTRO

7

VIDEO

9

LPF

8

CSYNC

6

SMS

4

SEN

16

SDO

14

SDA

15

SCK

5

HIN

12

VDD

C405

0.1uF

RED

GREEN

BLUE

BOX

RREF

VSS

VSS_A

47uF/16V

18

2

3

17

10K 1/16W

10

1

11

+

C410

R412

5V_CC

CC_R 4

CC_G 4

CC_B 4

R407
NC

R409
NC

R411

NC

CC_FB

Q400
NC

NC

R410

5V_CC

8V

L401

U402

3

2

600 OHM

VI VO

C411

0.1uF

GND

C404

47uF/16V

+

C406

0.1uF

1

ViewSonic Corporation N1750w

45

Z86129

R415 100 1/16W

8V

3D_C4

75 1/10W

3D_Y4

75 1/10W

R945

0 1/16W

For without Com Filter

CVBS_SEL_O2

R948

75 1/10W

R908

R932

8V

AGND

R906

120 1/2W

Q902

2SA1037AK

470 1/16W

470 1/16W

R929

120 1/2W

Q908

2SA1037AK

470 1/16W

470 1/16W

C933

0.1uF/16V

C936

47uF/16V

R915

R919

AGND

R937

R942

C927

22pF

AGND

27K 1/16W

+

10K 1/16W

5V

C947

10uF/16V

5V

C955

10uF/16V

R907

47 1/16W

Q903

2SA1037AK

C920

22pF

R930

47 1/16W

Q909

2SA1037AK

R946

R949

+

+

R909
1K 1/16W

5.6K 1/16W

Q904

2SC2412K

R920

220 1/16W

R933

1K 1/16W

R940

5.6K 1/16W

Q910
2SC2412K

R943

220 1/16W

Q912
2SC2412K

R951

470 1/16W

3

C948

0.1uF

3

C956

0.1uF

R916

U903

VI VO

AGND

U904

VI VO

AGND

GND

1

GND

1

2

3

4

2

3

4

2

C950

10uF/16V

2

C958

10uF/16V

R914

560 1/16W

1

FL901

6

EMI FILTER

R936

560 1/16W

1

FL902

6

EMI FILTER

Q913
2SC2412K

R950

820 1/16W

R952

470 1/16W

+

+

C960

0.1uF

R913

4.7K 1/16W

Q906

2SA1037AK

R935

4.7K 1/16W

Q900

2SA1037AK

EMI FILTER

1

6

AGND

L914

600 OHM

C951

0.1uF

L915

600 OHM

L913

600 OHM

47uF/16V

R917

10 1/16W

R941

10 1/16W

FL900

2

3

4

D33

D25

A25

C959

+

C961

0.1uF

C916

0.1uF/16V

AGND

AYO

R953

3.3K 1/16W

C957

47uF/16V

ACO

R947

1.8K 1/16W

Q914

2SA1037AK

+

C949

0.1uF

220 1/16W

AYI

A25

R921

0.1uF/16V

C900

0.001uF

C937

1uF/16V

+

0.1uF/16V

0.1uF/16V

0.1uF/16V

0.1uF/16V

0.1uF/16V

0.1uF/16V

0.1uF/16V

C917

AGND

C919

1uF/16V

+

R925

220K 1/16W

C928

0.1uF/16V

C929

0.1uF/16V

C932

0.1uF/16V

AGND

C938

C939

C940

C941

C942

10uF/16V

C943

C945

C946

AGND

D25

R910

47K 1/16W

Q907

2SC2412K

+

R911

1K 1/16W

R926

2.2K 1/16W

AGND

U902

UPD64083GF

81

AVDD

82

CBPC

83

ACO

84

AYO

85

CBPY

86

AGND

87

AGND

88

AYI

89

VCL

90

VRBY

91

VRTY

92

AVDD

93

AVDD

94

VRTC

95

VRBC

96

ACI

97

AGND

98

TEST25

99

TEST26

100

DVDD

C954

0.1uF/16V

Q901

2SA1037AK

R922

470 1/16W

R944

0 1/16W

80

DGND

DGND

TESTIC1

1

2

3

D33

R912

4.7K 1/16W

Q905
2SC2412K

78

79

KIL

TESTIC2

TEST01

4

LINE

TEST02

5

77

RPLL

R900

0 1/16W

76

CSI

TEST03

6

R924

10K 1/16W

57

58

SLA0

EXTDYCO4

EXTDYCO5

23

24

RSTB

25

D33

600 OHM

56

CLKB

EXTDYCO6

26

L904

55

EXTDYCO7

DGND

27

R939
0 1/16W

54

CKMD

EXTDYCO8

EXTDYCO9

28

C921

0.1uF/16V

C922

10uF/16V

C923

0.1uF/16V

52

53

FSCI

AVDD

DGNDRAM

29

30

+

51

AGND

DVDDRAM

DVDDRAM

DGNDRAM

5.6uH

C924

560pF

FSCO

AGND

XO

XI

AVDD

DVDD

TEST24

TEST23

TEST22

TEST21

DGND

TEST20

DVDIO

TEST19

TEST18

TEST17

TEST16

TEST15

L905

50

49

48

47

46

45

44

43

42

41

40

39

38

37

36

35

34

33

32

31

D25

R934

360 1/16W

C925

820PF

C935

0.1uF/16V

C944

0.1uF/16V

C952

0.1uF/16V

C953

0.1uF/16V

AGND

X901

20MHz

C934

0.1uF/16V

R931

220 1/16W

Q911

2SA1037AK

C930
22pF

C931
22pF

D33

D900

1N4148W

C918

10uF/16V

+

R923

10K 1/16W

SCL3,4,5,6,9,11,14

SDA3,4,5,6,9,11,14

D25

C926

0.1uF/16V

64

65

66

67

68

69

70

71

72

73

74

75

ALTF

DYCO8

DYCO9

TEST04

TEST05

TEST06

7

8

9

10

DYCO5

DYCO6

DYCO7

TEST07

TEST08

TEST09

11

12

13

DYCO2

DYCO3

DYCO4

TEST10

TEST11

TEST12

14

15

16

DVDD

DYCO0

DYCO1

TEST13

TEST14

17

18

R927

100 1/16W

R928

100 1/16W

R938

1K 1/16W

62

63

ST1

NSTD

EXTALTF

EXTDYCO0

19

20

R918

100 1/16W

60

61

ST0

SDA

EXTDYCO1

EXTDYCO2

21

22

59

SCL

EXTDYCO3

ViewSonic Corporation N1750w

46

9.2 Power board

R919

47 1/8W

1

C904 0.22uF/250V

C903 0.47uF/250V

R901

680K 1/8W

Varistor/470V/10A

C901

0.001uF/250V

4

3

BD901
D10XB60

-+

2

3

2

L904

73L 174-26-LS

4

1

3

2

L902
73L174-29-LS

4

1

NR901

NTCR 5A5

2.5A/250V

0.001uF/250V

R900

F901

R902

680K 1/8W

VAR901

C902

FG

C905

+

150uF/400V

680K 1/8W

t

CN902

2A

2

NC

1A

1

C908

0.1uF/50V

24K 1/10W
R911

R915 30K 1/4W

ZD901

20V

R917
100 1/10W

C922

+

4.7uF

R912
20K 1/10W

4

RI

5

RT

2

3

0.1uF/50V

R906
1M 1/8W

R907
1M 1/8W

3

Vin

GATE

SG6841

BiCOMS

SENSE

GND

1

Q903

PMBS3906

1

C912

7

VDD

FB

2

R904
1M 1/8W

R905
1M 1/8W

8

6

C911

0.1uF/50V

1

R918

4.7K 1/10W

D904

1N4148

R909 10 1/4W

R910 0 1/8W

C909
N.C

+

R916

4.7K 1/10W

3

Q902

PMBS3904

2

C906
1500pF/1KV

D902
PS102R

C907
22uF/50V

R913

20K 1/10W

1N4148

R903
100K 2W

Q901
2SK2996

D903

R928

20K 1/10W

D901

FR107

R908

3.3 1/8W

FB901
BEAD

R914

0.27 2W

D905

1N4148

T901
PQ26/22.5

4

O

6

3

O

2

C921

C910
1000pF

12

11

8

O

7

0.0047uF/250V

4

IC902

PC123FY2 4P

3

IC903

H431BA

R920

47 1/8W

MOSPEC20100

D911
MOSPEC20100

D910

C913

0.001uF

80LL17T-5

1

2

C918

0.1uF/50V

1000uF/16V
C914

1000uF/16V

+

R921
470 1/8W

R922
1K 1/10W

R923
0 1/10W

C919

0.01uF

C915

+

+

C920
1000uF/16V

ZD902

R924
1K 1/10W

L903
73L-253-91L

C916

470uF/16V

12V/SMD

+

R925
1K 1/10W

12V

C917

0.1uF/50V

F902

5A/24V/1206

R926

9.31K 1/10W

R927

2.43K 1/10W

V12A

+5V

12V

10

1

2

3

4

5

6

7

8

9

CN903

DIM

ON/OFF

CONN

1

CN901

SOCKET

3

2

ViewSonic Corporation N1750w

47

+12V

1.
эC211 C213,C213 C211

ON/OFF

C212

0.1uF/0805

DTA144WKA

Q207

DTC144WKA

1

C226
1uF/0805

C232

0.0015uF/0805

Q205

1

32

ZD203

5.6V

C217

0.1uF/0805

C219
1uF/0805

C221

0.47uF/0805

C222

2.2uF/1206

0.0068uF/25V

R201
10K 0805

3 2

R214
0 0805

R202

15 1206

C228

1

C213
1uF/0805

R206 10K 0805

IC201

1

CTIMR

2

OVP

3

ENA

4

SST

5

VDDA

6

GNDA

7

REF

9

FB

10

CMP

R244
15 1206

32

Q206
PMBS3904

R207

10K 0805

C211
1uF/25V

R245
NC 0805

NDRV_B

PDRV_A

PWRGND

OZ960

LPWMRT1

PDRV_C

NDRV_D

CT

RT

LCT

DIM

20

19

18

17

16

15

14

138

12

11

ZD204
N.C/ 15V

R210
N.C / 47K 0805

Q201

22 0805

NC 0805

220PF/0805

4700PF/0805

R223

1M 0805

N.C / RK7002

R209

C214

0.047uF/0805

C218

C220

JP202

C224

C227

0.1uF/0805

R220
22 0805

D205
0

R221
33K 0805

R222 51K 0805

C240

0.1uF/0805

ZD202

Q202

N.C / RK7002

R216

12

1M 0805

R217
62K 0805

C230

0.047uF/0805

5.6V

JP207

R204

10K 0805

1 2

R229 560 0805

JP206

R203

10K 085

ZD201

5.6V

220uF/25V

C202
104/0805

C210
104/0805

C225
470uF/25V

104/0805

104/0805

+

C201

+

C229

SB240
D-822017600

C235

D-822017600

SB240

1

S1N

D1N

2

G1N

D1N

3

S2P

D2P

4 5

G2P D2P

D-822017601SB240

D-822017600SB240

1

S1N

D1N

2

G1N

D1N

3

S2P

D2P

4 5

G2P D2P

D-822017601SB240

D-822017600

SB240

1

S1N

D1N

2

G1N

D1N

3

S2P

D2P

4 5

G2P D2P

D-822017601SB240

1

S1N

D1N

2

G1N

D1N

3

S2P

D2P

4 5

G2P D2P

D-822017601SB240

8

7

6

8

7

6

8

7

6

8

7

6

FSI4532
Q204

C203 2.2uF/1206

C206

2.2uF/1206

C207

2.2uF/1206

Q208
FSI4532

Q209

C231

FSI4532

2.2uF/1206

C233

2.2uF/1206

C234

2.2uF/1206

FSI4532

Q210

80LL17T

1 6

4 5

80LL17T

1 6

4 5

PT201

1 6

4 5

80LL17T

PT203

C204

5pF/3KV

PT202

C236

5pF/3KV

2

D201
BAV99

2

5pF/3KV

3

D206
BAV99

3

1

C205

2

220 0805

1

R248

220 0805

220 0805

3

D203
BAV99

1

R255

5.1K 0805

R208

6.2M 1/2W

R249

5.1K 0805

R252

5.1K 0805

R224

6.2M 1/2W

R256

R250

NC 0805

R246

6.2M 1/2W

R253

R257

NC 0805

1

R254

NC 0805

3

D207
BAV99

1

3

D202
BAV99

1

2

2

3

D204
BAV99

2

2

CN202

D212
BAV99

2

3

150 0805

D211
BAV99

1

1
2
3
4

CN202

3

150 0805

R258

1

CN201

1
2
3
4

CN201

R251

R227

10K 0805

R230
0 0805

C243

0.1uF/0805

R235
0 0805

C245

0.1uF/25V

R240
0 0805

C246

0.1uF/0805

R242
0 0805

C247

0.1uF/0805

1 2

R228
51K 0805

DIM

R236 220K 1/4W

is power GND

JP201

R232

1/10W

D208

N.C

R226
160K 0805

1 2

JP205

R233
1M 0805

R237
150K 0805

12

JP203

1 2

Q211
RK7002

C244
N.C

is signal GND

R225
100K 0805

Q212
RK7002

Q213

RK7002

Q214

RK7002

Q215

RK7002

R231

1M 0805

R238

1M 0805

R241

1M 0805

R243

1M 0805

ViewSonic Corporation N1750w

48

1 6

4 5

80LL17T

PT204

C237

5pF/3KV

2

3

D209
BAV99

R259

220 0805

1

R247

6.2M 1/2W

R260

5.1K 0805

R261

NC 0805

1

3

D210
BAV99

2

12V

+5V

C102

0.1uF/50V

R106

33K 1/16W

C103

0.1uF/50V

R108
47K 1/16W

IC101

2

Vcc

7

RT

5

SCP

6

DTC

FP5001DR

C104

0.1uF/50V

R114

1K 1/16W

R113
100 1/16W

1

Vo

FB

COMP

GND

FP5001

8

3

R116

3.6K 1/16W

+

C115

0.1uF/50V

1000uF/16V

C101

R111
15K

1

1

4

C113
NC

C114

3

1uF/50V

Q102

PMBS3904

2

R115
22 1/16W

2

Q103

PMBS3906

3

R109

3K 1/16W

1

2

3

4

2.7K
R112

Q101

S1

D1

S1

D1

S1

D1

G1

D1

AO4411

8

7

6

5

D101
SR24

L101

L

C108

470uF/16V

+

FB101

BEAD

C109

0.1uF/50V

C110

+

470uF/16V

R110

3.6K 1/16W

ViewSonic Corporation N1750w

49

*Readers Response*

Dear Readers:

Thank you in advance for your feedback on our Service Manual,which allows continuous improvement

of our products. We would appreciate your completion of the Assessment Matrix below, for return to ViewSonic

Corporation.

Assessment

A. What do you think about the content after reading N1750w-1 Service Manual?

tinU tnellecxE dooG riaF daB

1.PRECAUTIONS AND NOTICES

2.SPECIFICATIONS

3.USER OSD MAIN MENU DESCRIPTION

4.ADJUSTMENT PROCEDURE / EDID DATA

5.FACTORY OSD MAIN MENU INSTRUCTION

6.TROUBLE SHOOTING FLOW CHART

7.WAVE FORMS

8.EXPLODED DIAGRAMS

9.EXPLODED PARTS LIST

10.DISASSEMBLY INSTRUCTION

B.Are you satisfied with the N1750w-1 service ma nual?

metI tnellecxE dooG riaF daB

tnetnoClaunaMecivreS.1

tuoyaLlaunaMecivreS.2

gnitsildnamrofehT.3

C. Do you have any other opinion or suggestion about this service manual?

Readers basic data:

:emaN:eltiT

:ynapmoC

:ddA

:leT:xaF

:liam-E

After completing this form, please return it to ViewSonic Quality Assurance

1-909-839-7943.
([e-mail])

ViewSonic Corporation

You may also e-mail any suggestions to the Director of Quality Assurance

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