Olevia 232-S12 Service Manual

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Service Manu

LCD TV For 232-S12

Doc No. Version 1.0

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Service Manual

LCD TV For 232-S12

Doc No.： Version：1.0 Total Pages：41

Approval Made by

Hans Chung

2007/1/29

Kanzi Lee

2007/1/29

Revise by Revise by

Daniel Villa

12/8/06

Troubleshooting/disassembling

/Firmware Update/EDID

Update/Manual Structure

Randal J. Cook

12/7/06

Introduction

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Service Manual

LCD TV For 232-S12

Table of Contents

1. Introduction………………………………………………………………….......3

1-1 Preface……………………………….……… …… …. ……… …… ……… … ……………..3 1-2 Caution…………………………………………………..………………………………….3

1-3 Warning………………………………………………………..……………………………3

2. Specifications…………………………………..……………….…………………4

3. Wiring Diagram…………….……………………………………….…………….

4. Trouble shooting flow chart…………………………………………………….

4-1 Abnormal Display………………………………………………………………………....6

4-2 Abnormal Power On/Off…………………………………………………………………..7 4-3 LED Light Abnormal Display、Keypad Problem………………………………………..8

4-4 Image Abnormal Display………………………………………………………………….9 4-5 Audio Abnormal Output…………………………………………………………………..10 4-6 The Other Abnormal Display……………………………………………………………..11

5. Disassembly……………………………………………………………………12

5-1 Stand.……………………………………………………….……………………………….12

5-2 Back Cover……………………………………………………….…………………………1 5-3 System Board……………………………………………………………………………….1 5-4 Power Module………………………………………………………………………………14 5-5 Panel Module……………………………………………………………………………….15 5-6 Speaker..…………………………………………………………………………………..16 5-7 Keypad Board………………………………………………………………………………16

6. Firmware upgrade………………………………………………………………..17

7. EDID write in and ADC correction and Parameter Adjustment………………..20

7-1 EDID write in……………………………………………………………………………...20 7-1.1 EDID tools………………………………………………………………………………20 7-1.2 EDID write in……………………………………………………………………………20 7-2 ADC Correction and Parameter Adjustment………………………………………………21 7-2.1 ADC Correction…………………………………………………………………………21 7-2.2 Parameter Adjustment.……………………………………………………………………22

8. Exploded view…………………………………………………………………...23

9. Parts List and Photo……………………………………………………………...25

9-1 Parts List…………………………………………………………………………………...25 9-2 Parts Photo…………………………………..……………………………………………26 9-3 Parts List(Low bright panel)…………………………………………………………...33 9-4 Parts Photo(Low bright panel)……………..……………………………………………34

10. Block Diagram………………………………………………………………...41

5 6

2 3

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TITLE

Service Manual

LCD TV For 232-S12

1. Introduction

1-1 Preface

This service manual describes module-level LCD TV repair for qualified service personnel. This service manual also includes selected production troubleshooting information for electronic technicians and engineers.

1-2 Caution

This service manual contains important safeguards and instructions that must be followed for the safe and proper servicing of this TV.

1-3 Warning

1. Advise customers to follow all operating instructions and safety precautions that hav e been

furnished with the product.

2. Unplug the ac line cord before cleaning or disassembling the product.

3. Check the ac line cord and plug for wear or damage and replace as necessary.

4. Do not use liquid cleaners or aerosol cleaners to clean the display.

5. Do not place the product on an unstable table or cart. It can cause the product to fall,

resulting in injury and product damage. If a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.

6. Use only replacement parts specified by the manufacturer or replacement parts with the

same performance and safety characteristics. Use of substitute parts with different characteristics can result in fire or electric shock.

7. Do not hit the LCD panel. In case of breakage, use care when removing broken glass.

8. Keep the product away from heat sources such as radiators, heaters, stoves, and other

heat-generating apparatus.

9. Do not block any ventilation openings.

10. Do not use the product near water; for example, near a bathtub, washbasin, kitchen sink

laundry tub, in a wet basement, or near a swimming pool.

11. If the product uses a grounded-type ac plug and line cord, but the location has a 2-prong

receptacle, advice the customer to contact a qualified electrician to replace the outlet.

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Service Manual

LCD TV For 232-S12

2. Specifications

PRODUCT SPECIFICATIONS

LCD Panel Power Management

(Standby Mode) Displayable Resolution

Pixel Pitch LCD Display Color Viewing Angle

32" TFT ＜ 1W VGA 1360*768 max.

0.17025mm x 0.51075mm x RGB

16.7M colors(8-bits colors).

178(H)/178(V) (CR>10)

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Response Time Active Display Area RF Tuner

Power

Speaker Compliance Temperature

Weight w/o stand

Weight w/ stand

Gross Weight

Dimensions (WxDxH)

8ms (Gray to Gray)

697.685mm x 392.256mm (31.51" diagonal)

Combo RF (NTSC/ATSC)

Voltage : 100~240 V Consumption : 164W

10W FCC, cUL, CSA, Energy Star

Operating: -10℃~40℃ Storage: -10℃~60℃

33.63lbs

35.5lbs

45.421lbs

37.76 inches x 9.37 inches x 22.20 inches

Carton Dimensions (WxDxH)

42.80 inches x 12.40 inches x 25.35 inches

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Service Manual

LCD TV For 232-S12

3. Wiring Diagram

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Service Manual

LCD TV For 232-S12

4. Trouble shooting flow chart

4-1 Display Problems

Note: Refer to the Wiring Diagram during troubleshooting for a visual of inter-connections when indicated by this symbol.

Display Problems

Trouble Condition Check Item Replace Material Test

Abnormal display

1. No video Image

2. Video noise

3. Display flashes

4. Abnomal color

Bright spots

Dark spots

Backlight uniformity

Light leakage

Spot & Simi

Ghosting

Dust & Scratch

Step1：

1. Check for a loose video cable connection

2. Check video cable

3. Check source settings

4. Check TV input OK

Step2：

Check for a loose or broken connection between Con.J28 from system board to Panel LVDS connection.

Step3：

1. Check System board (5Vs) CN4-pin1 to ground = 5V,

2. Check System Board CN4-pin3 to ground = 5V CN5-pin2 to ground = 12V

Step1:

Check damage to

panel

Step2:

Check for a loose or broken connection between Con.J28 from system board to Panel LVDS connection .

1. Reconnect cable

2. Replace cable

Fail

3. Change source settings

4. Change TV input

5. Run auto Scan

Secure connection

Fail

or replace the LVDS wire

Fail

1.Replace Power Module if voltage is missing.

2.Replace Syste board if voltage is missing.

Fail

Fai

Replace Panel

Replace LVDS

connect wire

Test

Finish

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Service Manual

LCD TV For 232-S12

4-2 Abnormal Power On/Off

Trouble Condition Check Item Replace Material Test

Abnormal Power

On/Off

No Power

Note: Before proceeding confirm that Power cable is connected and that proper voltage is being fed to TV. (Check power switch located next to power input and confirm that it’s ON.)

Abnormal Power

Off

Shut down

Source can’t

switch

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Step1: Check Power Supply, Con. CN904–pin 7 to ground = 5VS Con .CN904 pin 8 to ground = 5V

Step2： Check Keypad board CN1-pin1 to ground = 5V or Check D1 lighting?

Step3： Check System Board CN4 pin1 to ground = 5Vs, and pin3 to ground = 5V,

Fail

Replace Power

supply

Replace Keypad

board

Replace System

board

Test

Finish

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Service Manual

LCD TV For 232-S12

4-3 LED is Malfunctioning、Keypad Problem

Trouble Condition Check Item Replace Material Test

LED is Malfunctioning

LED is not working

Step1：

Check CN 1 on system

board to CN 1 on Keypad

connection or bad cable

Step2：

Note: Before proceeding confirm that Power cable is connected and that proper voltage is being fed to TV. (Check power switch located next to power input and confirm that it’s ON.)

LED flashes

Check Power supply Con.

CN904-pin7 to ground =5V

Keypad doesn’t work

Step1：

Check connector CN 1 on

System board to CN1 located

on Keypad board for a loose

Step2：

Check connector CN 1 on

System board to CN1 located

on Keypad board for a broken

Step 3：

Replace Keypad Board

Step 4：

Replace System Board

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board for a loose

Check Keypad board

D1 & CN1-pin 1 to

ground = 5V

Step3：

Check System board

CN1-pin1 to ground =

connection

cable

Fail

Secure connection or

replace cable

Replace board if

there is no voltage

Replace System

board if there is no

voltage

Replace Power

Supply if there is no

voltage

Secure connection

Replace Cable

Test

Finish

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LCD TV For 232-S12

4-4 Image Problems

Trouble Condition Check Item Replace Material Test

Image Problems

Note: Before proceeding confirm that Power cable is connected and that proper voltage is being fed to TV. (Check power switch located next to power input and confirm that it’s ON.)

Note: Before proceeding make sure the PC is not in standby or hibernation mode. Make sure the video card is secure and not loose (AGP or PCI slot).

Service Manual

No picture through

component

No picture through

composite

No picture through

S-Video

No Picture through

Tuner

No picture through

HDMI

No picture through

VGA

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Step1：

1. Check video cable connection

2. Check video cable

3. Check source settings

Step2：

1. Check System Board component L29, L30,L31 for a short.

2. Check System Board component FB10,L20 for a short

3. Check System Board component FB11, FB12, L16, L17 for a short

4. Check System Board component L23 ,FB53, FB54 for a short

5. Check J2 Con. broken? E5 EDID OK?

Step1：

1. Check if VGA cable is loose.

2. Make sure the PC is set to a resolution the TV supports

3. Check both ends of VGA cable for broken or loose pins.

Step2： Check component J21 on system board for a short & component E6 that stores EDID information for a short.

Fail

1. Secure connection

Fail

2. Change PC resolution to fit the timing table

3. Replace VGA cable

Fail

1. Reconnect cable

2. Replace cable

3. Change source settings

Fail

Replace System

board

Replace System

board

Test

Finish

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4-5 Audio Problems

Trouble Condition Check Item Replace Material Test

Audio Problems

Make sure external audio

connection is secure before

proceeding with troubleshooting

Service Manual

LCD TV For 232-S12

Can’t adjustment

Volume

No audio

No audio on one

side of speaker

No audio through

earphone

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Check switches on the

keypad board

Step1： Check for loose connection between CN2 and peaker and CN3 and speaker

Step2： Check if the Speaker

module is broken

Step3： Check System board

CN5-pin1 to ground = 12V

Step1：

1. Check earphone

connection

2. Check earphone

cable

Step2：

Check OSD speaker

setting is off and not on

Step3：

Check System board

component J30 & Q28

for a short

Fail

Replace Keypad

Fail

Replace connect

Replace speaker

Replace Power

1. Secure earphone

connection.

2. Replace Earphone

cable

Replace System board

board

wire

module

Module

Set the speaker

setting to off

Test

Finish

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LCD TV For 232-S12

4-6 Other Problems

Trouble Condition Check Item Replace Material Test

Olevia 232-S12 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual