ViewSonic N3260w-1NT, N3760w-1NT, N4060w-1NT, N3260wb-1NT, N3760wb-1NT Service Manual

Service Manual

ViewSonic N3260w-1NT

N3760w-1NT
N4060w-1NT

N3260wb-1NT

N3760wb-1NT

Model No. VS10847-NT-1P

VS10848-NT-1P

VS10846-NT-1P

32” 37” 40” LCD TV

(N3260w_N3760w_N4060w_N3260wb_N3760wb-1NT_SM_Rev.1c_Nov.2006)

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

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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 warranties, either expressed or implied, 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 2006/04/25 Initial Release Sophia Kao

N3760wb-NT's RSPL and BOM.

1b 2006/07/04

Add two models, N3260wb-NT and

Sophia Kao

Sophia Kao

1c 2006/11/14

Add Assembly and disassembly procedure

on SM.

TABLE OF CONTENTS

1. Precautions and Safety Notices 3

2. Specification 6

3. Front Panel Function Control Description 8

4. Circuit Description 9

5. Adjustment Procedure 16

6. Trouble Shooting Flow Chart 23

7. Block Diagram 27

8. PCB Layout Diagrams 28

9. Schematic Diagrams 32

10. Exploded Diagram and Exploded Parts List 47

11. Assembly and disassembly procedure 53

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12. Recommended Spare Parts List 56

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1. Precautions and Safety Notices

All rights reserved. No part of this publication may be reproduced, transmitted, transcribed,

stored in a retrieval system or translated into any language in any form or by any means,

electronic, mechanical, magnetic, optical, chemical, manual, or otherwise, without the prior

permission of the company.

Disclaimer

We make no representations or warranties, either expressed or implied, with respect to the

contents of this document, and specifically disclaims any warranties, merchantability or fitness

for any particular purpose. Further, reserves the right to revise this publication and make

changes in the contents without obligation to notify any person of such revision or change.

All rights reserved

VGA and XGA are registered trademarks of International Business Machines Co. Inc.

Product safety notice

Many electrical and mechanical parts in this product include specific, safety related

characteristics. These characteristics may not be immediately obvious by visual inspection and

the protection these components offer can not necessarily be obtained using replacement

components with the same voltage or power ratings.

offer can not necessarily be obtained using replacement components with the same voltage or

power ratings. Electrical components having such features are identified by shading on the

schematic diagram and in the parts list. Before replacing components, read the parts list in this

manual thoroughly.

The use of substitute parts which do not have the same safety characteristics as those indicated

in the parts list may cause electrical shock, fire, x-ray emissions, or other hazards.

Service notes

1. When replacing circuit boards or components, clamp the lead wires to the terminals before

soldering.

2. When replacing a high power resistor (oxide metal film resistor) on a circuit board, keep the

resistor at least 10 mm (0.5-inch) from the circuit board.

3. Keep leads and wires away from high voltage and high temperature components.

4. If any fuse in the product is blown, replace it only with the correct fuse specified in the parts

list.

Handling of broken glass and liquid crystal leakage

If the LCD is damaged, liquid crystal leakage may occur and the glass may shatter into small pieces. Do

not touch the broken glass or liquid crystal which is toxic. In addition to possible cuts resulting from

broken glass, toxic leakage may cause skin irritation or poisoning. If liquid crystal enters your eyes or

mouth, you should immediately rinse with clean water and consult a doctor.

Important safety information

1. Read all these instructions.

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2. Save these instructions for later use.

3. Unplug this television set from the wall outlet before cleaning.

4. Do not use accessories not recommended in the user manual as they may damage the product.

5. Do not use this product in wet locations such as near a bathtub, washbowl, kitchen sink, laundry

tub, swimming pool, or in a wet basement

6. Do not place this product on an unstable cart, stand, or table. The television receiver may fall

and causeserious injury as well as possibly damaging the product. Use only with a cart or

stand recommended serious injury as well as possibly damaging the product. Use only with a

cart or stand recommended instructions and only use a mounting kit as recommended by the

manufacturer.

7. Blocking the ventilation holes can cause overheating and fire. Take care not to block any

ventilation holes when siting the television close to walls or other objects. Never install this

product in a closed cabinet or bookcase unless sufficient ventilation is provided.

8. This television should be operated using only the type of power source indicated on the label

and in the user manual. If you are unsure what your home power supply is, you should

consult the Power Company or talk to your television dealer.

9. This television is equipped with a plug designed to fit only one way in the power socket. The

earth pin is an important safety feature of the plug. If the plug does not fit your outlets or your

outlets do not include a hole for the earth pin, you should consult a qualified electrician about

replacing the socket.

10. Do not rest anything on the power cord and do not allow the power cord to lie in a position

where it is likely to be stepped on or tripped over.

11. Follow all warnings and instructions marked on the television receiver.

12. During thunderstorms and when the television is unused for extended periods of time, you

should unplug the power cord from the outlet and disconnect the antenna.

13. External antenna systems should be sited away from overhead power lines and away from

electrical circuits. Extreme caution should be exercised when erecting an outside antenna.

Touching overhead power cables can be fatal.

14. Do not overload power outlets or extension cords as fire or electric shock can result.

15. Never push anything into the television through the ventilation slots as they may come into

contact with high voltage elements of the device and cause electric shock or fire. Take care

never to spill liquids into the product.

16. Servicing of this product should only be carried out by qualified service technicians.

17. Unplug this product from the power source and consult a qualified service technician in the

following

cases:

• The power cord is damaged or frayed.

• Liquid is spilled into the television.

• The television is exposed to rain or water.

• The television does not operate as the user manual describes. In this case, use only

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the controls covered by the operating instructions. Improper adjustment of this equipment

using controls not covered in the user manual may result in damage to the product that may

require extensive work by qualified technicians to rectify.

• The television or cabinet is damaged.

• The television shows a change in performance that indicates a need for servicing.

18. When replacement parts are used, ensure that the technician uses only parts recommended

by the manufacturer. Unauthorised replacement parts may cause a fire or electric shock.

19. After servicing, ensure that the technician performs routine safety checks to determine

whether the television is in a safe operating condition.

20. When moving this equipment, care should be taken to prevent damage due to dropping,

falling or impact.

Introduction

This service manual covers the LCD TV and is intended for the use of qualified service

engineers only. Service and repair of this product by unqualified persons may result in

permanent damage to the product or personal injury and should not be attempted.

This manual includes:
．A block diagram of the LCD TV
．An explanation of theory of operation
．An explanation of the service mode to enable you to adjust the internal settings
．A step by step guide to assembly and disassembly of the product
．A complete parts list for the product
．An exploded diagram of the product
．Pictures of the printed circuit boards

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2. Specification

Panel Type 32” (full 31.5” viewable diagonal area)

37” (full 37.02” viewable diagonal area)

40” (full 39.9” viewable diagonal area)

Active Matrix Wide-XGA, 136

6 x 768

Color Anti-reflective coating + Anti-glare coating

Viewing angles 32” 170° (H) / 170° (V)

37” 176° (H) / 176° (V)

40” 170° (H) / 170° (V)

Input signal Video VGA input * 1

TV system antenna

Composite Video input * 2

S-Video * 2

Component Video * 2 (YCbCr, YPbPr)

HDMI * 1

Audio Audio input (3.5 For V

GA*1)

Audio output * 1

Compatibility PC Up to 1360 x 768 Non-interlaced

Macintosh1 Up to 832 x 624 Non-interlaced

Resolution Supported 1280 x 1024 @ 60 Hz*

1024 x 768 @ 60/75 Hz

1280 x 768 @ 60 Hz

1280 x 720 @ 60 Hz

1360 x 768 @ 60 Hz (it is the PC reference mode)

832 x 624 @ 75 Hz (Mac)

800 x 600 @ 60/75 Hz

640 x 480 @ 60/75 Hz

720 x 400 @ 70 Hz

* is not supported at HDMI status.(PIP/POP)

Speaker Output 10 W + 10 W

Power Voltage 32”:190W 110V VAC ,50/60Hz (auto switch)

37”:220W 110-240 ,50/60Hz (auto switch)

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40”:260W 110-240 ,50/60Hz (auto switch)

Operating Temperature 0°C to 40°C (32°F to 104°F)

Conditions Humidity 10% to 85% (no condensation)

Altitude To 3000 meters

Storage conditions Temperature -20°C to 60°C (-4°F to 140°F)

Humidity 10% to 85% (no condensation)

Altitude To 12,000 meters

Dimensions Physical 32” : 820 mm (W) x 650 mm (H) x 230 mm (D)

32.3” (W) x 25.6” (H) x 9.1 “(D)

37” : 960 mm (W) x 730 mm (H) x 280 mm (D)

37.8” (W) x 28.7” (H) x 11” (D)

40” : 1015 mm (W) x 755 mm (H) x 280 mm (D)

40.0 ”(W) x 29.7” (H) x 11” (D)

Package 32” : 960mm (W) x 780 mm (H) x 320 mm (D)

37.8” (W) x 30.7” (H) x 12.6 “(D)

37” :1130 mm (W) x 870 mm (H) x 370 mm (D)

44.5” (W) x 34.3” (H) x 14.6” (D)

40” : 1145 mm (W) x 910 mm (H) x 370 mm (D)

45.1 (W) x 35.8” (H) x 14.6” (D)

Weight Net 32” : 22 kg (48.5 lb.)

37” : 31 kg (68.3 lb.)

40” : 33 kg (72.7 lb.)

Gross 32” : 26.5 kg (58.4 lb.)

37” : 38.5 kg (84.9 lb.)

40” : 40.0 kg (88.1 lb.)

Regulations BSMI

Power saving modes Stand by <1.5 W (Red LED)

Preset Timing Mode (Pre-adjusted to VESA 1360 x 768 at 60 Hz)

War nin g : Do not set the graphics card in you computer to exceed these refresh rates. Doing so may result in permanent

damage to the LCD.

Note : Product specifications are subject to change without notice.

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3. Front Panel Function Control Description

1. CH ▲/ ▼

Changes the channel.

2. VOL +/–

Used for changing the volume.

3. MENU

Display menu screen

4. SOURCE

Switch between display input sources.

5. POWER

Turns the TV on and off. A green light indicates that TV is on and red that it is off.

6. EARPHONE

Used for connecting headphones to the TV.

7. Power indicator LED

Green shall apply during all operational states(ie.with image preaent).

Orange shall apply DPMS State for RGB/DVI.

Red shall apply when the product in stand-by mode. (DPMS state only in PC mode.)

8. SPEAKERS

Audio output.

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4. Circuit Description

Power Circuit:

Exchanged Power Model provide this machine 3 batch power: +12V, +5V and +24V. +5V is Stand-By power, provide

every circuits in main board needed power with +12V.+24 is back light power.

A.

Cold-Start Mode

：

z Exchanged Power Model (+12V, +5V), via power1 jack transmits voltage to digital main board.

z When connect with AC110V, exchanged power produce +5V voltage immediately (circuit mark

5V_SB) and provide CPU U22 the needed stand-by voltage to turn on the machine

z This machine is in Stand-By Mode now.

B.

Stand-By Mode(+5V)

：

z In Stand-By Mode, Exchanged Power Model provides +5V voltage (circuit mark 5V_SB) and provides

the needed power to CPU U22 PIC 16F505.

z When this machine is in Stand-By mode, only U22- PIC16F505 keep working, so the system can

assure the consumption power is < 1.5W in Stand-by Mode.

z The Block Diagram 1 shows Stand-By Mode

C. Power ON Mode(+5V ,+12V)

z When the system receives the start order by Power Key of the remote control or Power ON/OFF of

the control panel, it will process the following action

z The system hands over CPU’s masterdom from CPU U22CPU to U27 M30620 .

z When exchanged power receives the start order by CPU U22, (signal mark POWER_ON), via Q3

MMBT3904 to control Exchanged Power Model provides +12V voltage (signal mark VCC_12V).

Every batches of digital board circuit would be able to process Power ON procedure.

z After every batches of digital board process Power ON procedure,U29 M30620 via BKLT_CNTL to

control circuit and light the back light.

z The Block Diagram 2 shows the voltage of Power ON Mode and IC.

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Antenna Circuit:

• Tuner FQ1236F receive the signal coming from CATV or antenna RF NTSC signal and demodulate image

composite signal (signal mark TV 1) and audio medium frequency signal (signal mark SIF1).

• Image composite signal (signal mark TV 1)

• Image composite signal enter Video SW IC AV BOXU1 MM1630 PIN 17 and switch with other input

signals in U1 inner switch circute .Output from PIN 60 (signal mark CYOUT2) than via Q38 Video buffer (signal

mark CVBS_EX) and enter U38 Scaler IC EX-52 (Pin 242) directly. Switches with other input signals in

U38 inner switch circute.

• Audio medium frequency signal (signal mark TV-S), transmits U3 CAX2104S to demodulate audio IF and

stereo.Then switches signal source with other Audio Source in U4 MM1631 Audio S/W.PIN 29,30 outputs via

Q25,Q26 Audio buffer to U49 SRS TA2136F , transmits to U39 AN5891K then enter D-amplifier U17 TPA3004

output.

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AV (Video) Input circuit (AV,S,YPbPr,PC,HDMI ): (AS block diagram 4)

• AV IN:AV1、AV2 、S1、S2、YPbPr1 、YPbPr2 、HDMI、PC

•AV BOX AV1 or AV2 Input:

• Composite video output signal of external AV1 or AV2 device respectively input IC U1 Video/Audio

SWITCH Input port PIN 65,71 and switch signal with other Video Source in CPU controlled inner switch circuit.

• U1 Composite video output:

After switching with other Video Signal source, output from U1 PIN 60 (signal mark CYOUT 2) goes through Q38 Video

buffer (signal mark CVBS_EX) and input U38 Scaler IC EX-52 input jack (Pin 243) (CVBS2)directly.

Switches with other input signals in U38 inner switch circuit.

• PIP/POP mode

U3 PIN 56 output AV composite image signal (CYOUT1) via Buffer Q36 translate into CVBS_7 signal then

input U30 SA7117 Video decode PIN L3 to proceed PIP/POP function in PIP/POP mode .

• S 、Composite video Terminal.

• U3 S1 or S2 input

S video include Y,C siganl . S1Y1 & C1 input respectively U3 PIN67,69 .S2 Y2 &C2 input respectively

from U3 PIN73,75.Switch signal with other Video Source in U1 inner switch circuit.

• U3 S Output

S(Y/C) output respectively from PIN56 and 55 .Y singal via Buffer(Q29) translates into LUMA_7 than input

U30 SA7117 Video decode PIN k2.

• PIP/POP mode

Via Buffer Q36,C signal (PBOUT2) translate into CHROMA_7 and input U30 SA7117 Video decode PIN

H2 to proceed PIP/POP function in PIP/POP mode .

• HDTV

: Receives outside AV DEVICE Component Video signal .YIN_1,PBIN_1,PRIN_1 input respectively U1

PIN21,23,25 and Switch signal with other Video Source in U1 inner switch circuit than Y via Q37 Video buffer

input U38 EX-52 PORT Y_G1(PIN246),Pb viaQ40 Video buffer input U38 EX-52 PORT PB_B1(PIN232),Pr via

Q39 Video buffer input U38EX-52 PORT PB_R1(pin225) and Switch signal with other Video Source in EX_52 .

• HDMI: Receives outside AV DEVICE HDMI Digital , U53 Sil9011 translate Digital Video signal decode into

24 bits Digital RGB signal DIN[0:23],than input U38 EX-52 Digital PORT DIN[0:23] and switch with other Audio

source in EX-52 .

• PC(VGA) signal includes: R、G、B、HS (Horizontal sync signal)、VS (Vertical sync signal), R transmits to U38

EX-52 PORT PR_R2_G1(PIN226)、G transmits to U38 EX-52 PORT Y_G2(PIN248)、B transmits to U38 EX-52

PORT PB_B2(PIN233) and switch with other EX-52 inner signals. HS(Horizontal sync signal) transmits to U38

EX-52 PORT AIN_HS(PIN10),VS (Vertical sync signal ) transmits to U38 EX-52 PORT AIN_VS(PIN11).

• U38 EX-52 transmits digital Video via LVDS (TXOUT0:3+,TXOUT0:3-) to PIN Set J10 and show out the image.

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AV Input Circuit(Audio):

• AV Audio input signal includes:AV(1,2)、S(1,2)、HDTV(1,2)、PC、TV、HDMI

• AV 1(S1),AV2(S2) Audio R/L Signals input respectively U4 MM1631 Audio Switch PIN35,36/PIN33,34 to

switch with other audio input source than output from U4 29,30 via Q25,Q26 Audio Buffer and input U49 SRS

TA2136F PIN1,2 to process SRS processing then output from PIN11,12.Input U39AN5891K PIN3,22 for sound

effect working .

• U39AN5891K PIN 12,13 output earphone signal and variable audio voice .Earphone signal trainsmits to U57

TDA1308T AMP to amplify earphone volum .

• HDTV (Y/Pb/Pr) left and right audio signals input repectively U4 MM1631 Audio Switch PIN1,2/3,4

• PC(VGA) left and right audio signals input to U22 MM1631 Audio Switch PIN 7,8 .

• HDMI Audio :

• Digital Audio signal :Via U53 Sil9011 Digital Vedio Decode decoded into I2s digital audio signal and via

U56 CS4334 D/A translate into analog audio signal than input U4 MM1631 Audio Switch PIN9,10.

• Analog Audio signal :input U4 MM1631 Audio Switch PIN 11,12.

• Digital /Analog Audio signal switch by OSD memu.

• After R/L audio signals switching (include AV,S,HDTV ,PC ,TV and HDMI ),All signals output from U39 AN5891

PIN12,13 and trainsmit to U17 TPA3004 amplify and output.

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CPU circuit

• U27 M30620 is 16 BITS CMOS CPU，the main CPU of the system.

• (Address Bus)：A[0:7] and A[8:18]

• Data Bus) ：AD[0:7]

• U19 W29C040 is 4Megabit(512K X 8- bit) Flash Memory，the main function is store program.

• U23 is Reset IC，reset CPU U29 at the beginning of Power ON

• CPU U27 via I2C SDA/SCL(SDA_5V /SCL_5V) to connect and control U38 SCALER IC EX52 and transmits data

via Address Bus：A[0:7] and Data Bus ：AD[0:7].

• U22 PIC16F505 is the second CPU，the main function is instead the main CPU U27 M30620 to detect Remote

controller and control On/Off button to order the system power on while this machine is in Stand-By mode. This

step can assure this machine has low consumption power as it is in Stand-By

mode.

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5. Adjusting Procedure (Service mode)

An internal settings service menu is provided to allow adjustment of the device by qualified

service personal. Improper use of the internal settings service menu may render the device

unusable. Refer to the following sections to learn how to operate the service menu.

Equipment Needed

This is necessary to burning LCD TV set about 30 MIN. before start Adjusting Procedure .

Starting the service mode

To start the service mode of operation and view the internal settings menu, do the following:

1. Switch on the LCD TV and make sure that the TV mode is selected.

to enter the internal settings menu.

3. Press ▲ and ▼ to scroll through the various menu options.

4. Press ◄ and ► to change the menu settings.

5. Press EXIT to save the new settings and exit.

6. Press DISPLAY to switch the service mode pages.

Factory Option

Firmware Update Connect to the equipment and update new software.

EEPROM clear While it displays the word “OK”, it finishes clearing.

Auto Power Up As the order shows “On”, it will turn on the power as you

connect to the power plug.

User Initialize off The suitable mode for customers.

Version Display the software version.

Factory Restore (no support)

Color Temperature Adjusts the image color intensity

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2. Press 100 991 (-/-- button followed by 991 on the number buttons) on the remote control

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Firmware Upgrade/Upgrade

1.connect Cable

Connect to the LPT1 jack
of PC

Connect to the VGA jack
of TV set

2. After connect the cable, turn on the TV set and enter Adjusting Procedure

Factory mode select [Firmware Upgrade] and press

► key to enter upgrade mode

TL3241T

3. Enter the [IAP Writer] on PC and enter the burner program.

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4. Press [open file] icon and show [open file] window picture. Select the file and
Press [OK]

5.Press [Write Device] and start writing.

The screen of TV SET when writing.

The write Device OK.

5. When writing finish, it is necessary to unplug and plug AC power. Turn on the TV
set and the upgrade OK

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Firmware Original Setting

【Factory-Options】:

X: no this function.

Item Original Setting Describe

TV/AV/S HDTV PC/DVI

Fireware Update X

Check Software version and update date when

press ►

LVDS Mapping X No Function

EEPROM clear off Clean EEPROM data

Auto Power Up off Turn on setting automatically

User Initialize X Original setting automatically

Version X Check software version when press ►

Factory Restore X Back to factory setting.

Color temperature

【TCD3】:

Item Original Setting Describe

TV/AV/S HDTV PC/DVI

Bright Middle 036 X Adjusts bright middle setting

Contrast Middle 107 X Adjusts contrast middle setting

Sharpness Middle: 002 X Adjusts sharpness middle setting

Color Middle: 152 X Adjusts color middle setting

Hue Middle: X Adjusts hue middle setting

YC Delay 000 X no function

U Delay 007 007 007 no function

V Delay 005 005 007 no function

PWM 110 110 110 Adjusts background bright .

【ScalerWhite Balance Adjust】:

Item Original Setting Describe

TV/AV/S HDTV PC/DVI

R offset 129 129 133 Adjusts R Offset

G offset 130 130 135 Adjusts R Offset

B offset 134 134 130 Adjusts R Offset

R Gain 135 135 157 Adjusts R gain

G gain 130 130 150 Adjusts R gain

B gain 137 137 176 Adjusts R gain

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Function Test

A. Control Bottom (control panel and remote control)

Check item Describe

POWER Press [POWER] to turn ON or OFF LCD TV

Press [SLEEP] to set the off timer from 15 to 120 min.
Remote control
effective range

The effective range is 5 meter from LCD sensor.

Indicator LED TURN ON : green light

TRUN OFF (standby mode): red light

DPMS state for PC/HDMI mode :orange light
EARPHONE Plug in the earphone, check the speakers is mute

Plug in the earphone, check the earphone is working

Plug in the earphone, Adjust the VOLUME and make sure the

volume of earphone follow the adjusting
MENU Press [MENU] key to make sure the OSD picture will show out
CHANNEL

Press [Channel]

▲ ▼ to check the channel number change normally

Press [RECALL] to check switching previously viewed channel normally

Press [NUMBER KEY] and [100] to enter the channel number

VOLUME Press + - to check the volume Increases or decreases
SOURCE Press [SOURCE] KEY and check each signal source is normally

Press [HDMI], [PC], [S-VIDEO], [AV], [COMPONENT] to enter

HDMI,PC,S-VIDEO, AV,COMPONENT mode
SCREEN Press [WIDE] will switches in several screen

mode :AUTO,4:3,16:9,Zoom,14:9)

Press [Display] will show the input signal source

Press [POWER SAVING] to select standard or soft to saving

power.
AUDIO Press [AUDIO MODE] to switch the audio mode: custom , soft ,

standard

Press [MUTE] to disable the audio output

Press [SRS] to switch SRS ON or OFF, STEREO SURROUND,

and MONO SURRONUD.

Press [SOUND AI] to adjust volume automatically.

Press [立體雙語 SOUND] to switch MONAURAL,STEREO mode.

VIDEO Press [VIDEO MODE] to switch video mode: custom, vivid, mild,

and standard.

Press [PIP/POP] to toggles between PIP and POP modes.

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B. OSD (MENU)
Press [menu] to check the OSD and adjust by

▲ ▼◄ ►KEY

Check item Describe

VIDEO

Press

▲ ▼ to check the BAR slide :picture mode- contrast - brightness-

colour- tint- sharpness –NR-

Press

◄ ► to check the red bar or number increases or decreases.

Picture mode : custom ,vivid ,mild ,standard

NR: ON,OFF

AUDIO

Press

▲ ▼ to check the BAR slide : volume- treble -bass-balancer-

SRS- MTS –audio mode-HDMI Audio

Press

◄ ► to check the red bar or number increases or decreases.

SRS : SRS ON, SRS OFF, stereo surround, mono surround.

MTS: ON,OFF

Audio Mode: custom, soft, standard

HDMI Audio: digital, analog

SCREEN

Press

▲ ▼ to check the BAR slide : display mode – default- color

temperature (PC ONLY:phase, clock,H position, V position, auto Sync)

Press

◄ ► to check the red bar or number increases or decreases.

Display mode: Auto,4:3,16:9,Zoom,14:9.

Color temperature: cold,standard,warm

SETUP

Press

▲ ▼ to check the BAR slide : tuning-auto search

Tuning

Press ▲ ▼ to check the BAR slide : CH-type-CH NO.- favorite CH -skip-

fine tuning-manual search

Press ◄ ► to check the red bar or number increases or decreases.

CH type : cable, TV.

Favorites CH: 12 Channels setting

SKIP: Select ON to delete the channel from channel list. Press [EXIT] to

make sure the channel has been deleted.

Fine tuning: press ◄ ►to adjust the frequency of channel. Check the

vision behavior Press [EXIT] to make sure the setting has been saved.

OPTION

Press

▲ ▼ to check the BAR slide : menu language-sleep timer-menu

background-source information-reset-PC display

Press ◄ ► to check the item correctly.

Menu language: Check the display language correctly (Chinese, English).

Sleep timer: From OFF –15-…-120MIN.

MENU background: Adjust the background color from light to heavy

Opaque/mode1/mode2/mode3/mode4

Reset: Reset all OSD setting to original setting.

PC display: adjusts the resolution of TV set in PC MODE

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6. Trouble Shooting Flow Chart

No power

z Make sure the LCD is properly connected. (see also pages 12)

z Make sure the AC power cord is properly connected. (see also page 12)

z Make sure the AC power is ON, DC power button is ON (Green LED).
z

Plug another electrical device (like a radio) to the power outlet to verify that the outlet is
supplying the proper voltage.

Poor or no picture

z The TV station may be experiencing problems. Try another channel.

z The Cable TV signal may be scrambled or encoded. Please contact your local cable

operator.

z Make sure that connection to other components are correct. (see also pages 12)

z Make sure that setup has been done correctly after connections. (see also pages 14-19)

z Make sure the correct input is selected and the input signal is compatible.

Strange color, light color, or color misalignment

z Ensure that the video cable is securely connected.

z The picture may appear dim in a brightly lit room.

z Adjust brightness and contrast.

z Check the input signal setting.

No sound

z Check your audio connections

z The MUTE button may have been pressed, try pressing this button again.

z Check your audio settings, your TV audio may be set to minimum.

z Press the Volume + (Up) button on the remote control.

Remote control unit does not operate

z Make sure batteries are inserted correctly. (see also page 11)

z Batteries could be weak or dead. Replace batteries.

z Is a fluorescent light illuminated near the remote control sensor?

z The path of the remote control beam may be blocked. Make sure the path is clear and that

the remote control is aimed at the remote control sensor on the TV.

z Press only one button at a time and it is the correct one for the operation you want to

perform.

Unit cannot be operated

z External influences such as lightning or static electricity may cause improper operation. In

this case, operate the unit after first turning on the power of the LCD and the AVC System,

or unplug the AC cord for 1 to 2 minutes, then replug again.

Power is cut off suddenly

z Is the sleep timer set? (see also page 19)

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z The internal temperature of the unit has increased. Remove any objects blocking the vent

or clean as necessary.

No CATV reception (or no reception above CH13)

z Is the AIR/CABLE option set correctly? Please set the AIR/CABLE option to CABLE.

z CATV is connected improperly or not connected; please check all the CATV connections.

z The cable TV service is interrupted; please contact your cable operator.

Picture is cut off/with sidebar screen

z Is the image positioned correctly?

z Are screen mode adjustments such as picture size set correctly?

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7. Block Diagram

32 ”/37”/40”

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8. PCB Layout Diagrams

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