Tatung V32ECBB, V32ELBB, V32EMBB Schematic

Service Manual

V32ECBB/V32ELBB/V32EMBB

LCD Multi-Media Display

(PAL/SECAM system)

Table of Contents

1. Safety and Precautions…………………………………………………………….1

2. Specifications……………………………………………………………………….3

2.1 Specification for V32ECBB…………………………………………………….3

2.2 Specification for V32ELBB…………………………………………………….4

2.3 Specification for V32EMBB……………………………………………………5

2.4 PC I/P Preset Timing Table………………………………… …………………6

3. Connection & Applications…………………………………………………………..7

4. Controls Location…………………………………………………………………….9

5. Remote Control………………………………………………… …………………….11

6. Disassembly Instructions…………………………………………………………….14

7. Block Diagram…………………… …… ……………………………………………..18

8. T r oubleshooting………………………………………………………………………19

8.1 Symptom Codes (for Call center use)………………………………………….19

8.2 Flow Chart (for Repair center use)…………………………………………….23

9. Electronic Circu i t Description………………………………………………………. 25

10. Circuit Diagram…… ……………………………………………………………… .. 30

10.1 Main Board……………………………………………………………………...30

10.2 Key, LED&IR Board …………………………………………………………..39

10.3 Tuner & Video Board…………………………………………………………..40

10.4 Connecting Board………………………………………………… …… ………41

10.5 Power Board…………………………………………………………………….42

11. PCB Layout……………………………………………………………………………43

11.1 Main Board PCB………………………………… …………………………….43

11.2 Key, LED&IR, Connecting Board PCB………………………………………45

11.3 Tuner & Video Board PCB……………………………………………………46

11.4 Connecting Board PCB………………………………………………………...47

11.5 Power Board PCB………………………………………………………………48

12. Spare Parts List……………………………………………………………………….49

13. Mechanical Disassembly………………………………… …………………………...51

14. Firmware Program Update Steps……………………………………………………53

1. Safety and Precautions

CAUTION

* The service of this LCD TV must be carried out by qualified persons only. * Do not change any module unless the set is switched off.

CLEANING：Always disconnect unit from mains supply before attempting to clean it.

Use soft cloth moistened with soapy water, wipe gently. Do not use solvents of abrasive materials.

SOME DO’S AND DONT’S ON THE SAFE USE OF EQUIPMENT

This equipment has been designed and manufactured to meet European safety standards but like any electrical equipment, care must be taken if you are to obtain the best results and safety is to be assured.

read the operating instructions before you attempt to use the equipment.

Do Do ensure that all electrical connections (Including the mains plug, extension leads

and interconnections between pieces of equipment) are properly made in accordance with the manufacturer’s instructions. Switch off and withdraw the mains plug when making or changing connections.

Do use only the Power Cord and Power Supply (option) provided.

consult your dealer if you are ever in doubt of the installation, operating, or safety of

your equipment.

Don’t exert pressure on the LCD TV . This could break the panel . Don’t continue to operate the equipment if you are in any doubt about it working

normally, or if it is damaged in any way. Switch off, withdraw the mains plug and consult your dealer.

Don’t remove any fixed covers as this may expose dangerous voltages. Don’t leave equipment switched on when it is unattended unless it is specifically stated

that it is designed for unattended operation or has a standby mode. Switch off using the switch on the equipment and make sure that everyone knows how to do this. Special arrangements may need to be made for infirm or handicapped people.

Don’t listen to headphones at high volume, as such use can permanently damage your

hearing.

Don’t obstruct the ventilation of the equipment, for example, with curtains or soft

furnishings. Overheating will cause damage and shorten the life of the equipment.

Don’t allow electrical equipment to be exposed to rain or moisture.

Above all

─ Never let anyone push anything into holes, slots or any other opening as this could

result in a fatal electric shock.

─ Never guess or take chances with electrical equipment of any kind. ─ It is better to be safe than sorry!

WARNING：TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT

EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE. DANGEROUS HIGH VOLTAGES ARE PRESENT INSIDE THE ENCLOSURE. DO NOT OPEN THE CABINET. REFER SERVICING TO QUALIFIED PERSONNEL ONLY.

2.1 V32ECBB

2. Specifications

ITEMS SPECIFICATION

Screen Size 31.51” TFT-LCD Panel (CPT)

Aspect Ratio 16：9

Resolution 1366 x 768 (WXGA)

Display Area (opening) H x V 697.68 mm x 392.25 mm

Panel

TV Function

Video

Input

Digital Input

PC Input (analog)

Audio Input

Video Output

Audio Output

Feature

Power Dimension W x H x D 964.8mm * 582.4mm * 279.8mm

Weight

(net)

Pixel Pitch 0.511 mm x 0.511 mm

Display colors 16,777,216 colors

Contrast Ratio 800 : 1 (typ.)

Brightness (center) 550 cd / m

Viewing Angle (CR>10) 176o Hor. / 176o Ve r. ( t y p . )

Response Time (GTG) 10 ms (typ.)

Broadcasting System PAL / SECAM

Receiving Channel B / G, D / K, I and L / L’ (Multi-Europe)

Sound System NICAM / A2 (IGR)

Data Broadcasting Teletext 255 pages (FLOF /TOP) , Auto Program Searching (APS)

Video Color System PAL / SECAM / NTSC

AV1 (scart) 21-pin Scart (RGB / CVBS / SVHS) x 2

AV2 (composite)

AV3 (component) Y Pb Pr (720P / 1080i , HDTV ready) x 1

HDCP / DVI HDCP 1.1 / DVI 1.0

Signal Connection D-Sub 15 pin x 1

PnP compatibility DDC / 2B

Scanning Frequency f

HDTV Ready (via D-sub 15 pin) 720p, 1080i

Audio 1 Scart (build-in) x 2

Audio 2

Audio 3 Component x 1

Audio 4 PC

SCART 1 TV x 1

SCART 2 TV / CVBS (scart 1) x 1

Composite (RCA jack) TV

Speaker ( build-in) 10W + 10W (rms) @ THD < 10% ( 7W + 7W @ THD < 1% )

Line Out Left / Right / Subwoofer

OSD Language

Function Keys Power , Source , Menu , Up/Down(Channel) , +/-(Volume) , Aspect .

Video Performance

Audio Performance Equalizer, Subwoofer, Auto Volume Control (AVC),

Other Control Sleep Timer, Auto Power Off.

Power Supply AC 100V ~ 240V , 50 / 60Hz

Power Consumption < 180 W

Without Accessories 22.2kg

Composite (RCA jack) x 1

S-Video

Composite x 1

S - Video

English, French , German , Spanish , Italian ,

Finnish , Swedish, Dutch, Demark, Norway

Picture in Picture (PIP) , Comb-filter , 3D De-interlace , Canal Plus ,

Tele text , Aspect Ratio Control (ARC) , Auto Picture Control(APC) ,

Video Enhance , Noise Reduction , Picture by Picture (PBP) .

(typ.)

31.5 ~ 60KHz / f

H =

= 56 ~ 75Hz

x 1

2.2 V32ELBB

ITEMS SPECIFICATION

Screen Size 31.51” TFT-LCD Panel (LG)

Aspect Ratio 16：9

Resolution 1366 x 768 (WXGA)

Display Area (opening) H x V 697.68 mm x 392.25 mm

Panel

TV Function

Video Input

Digital Input

PC Input (analog)

Audio Input

Video Output

Audio Output

Feature

Power

Dimension W x H x D 964.8mm * 582.4mm * 279.8mm

Weight (net) Without Accessories 22.2kg

Pixel Pitch 0.511 mm x 0.511 mm

Display colors 16,777,216 colors

Contrast Ratio 550 : 1 (typ.)

Brightness (center) 500 cd / m

Viewing Angle (CR>10) 176o Hor. / 176o Ver. (typ.)

Response Time (BTW) 16 ms (typ.)

Broadcasting System PAL / SECAM

Receiving Channel B / G, D / K, I and L / L’ (Multi-Europe)

Sound System NICAM / A2 (IGR)

Data Broadcasting Teletext 255 pages (FLOF /TOP) , Auto Program Searching (APS)

Video Color System PAL / SECAM / NTSC

AV1 (scart) 21-pin Scart (RGB / CVBS / SVHS) x 2

AV2 (composite)

AV3 (component) Y Pb Pr (720P / 1080i , HDTV ready)

HDCP / DVI HDCP 1.1 / DVI 1.0 x 1

Signal Connection D-Sub 15 pin x 1

PnP compatibility DDC / 2B

Scanning Frequency f

HDTV Ready (via D-sub 15 pin) 720p, 1080i

Audio 1 Scart (build-in) x 2

Audio 2

Audio 3 Component x1

Audio 4 PC x 1

SCART 1 TV x 1

SCART 2 TV / CVBS (scart 1) x 1

Composite (RCA jack) TV x 1

Speaker ( build-in) 10W + 10W (rms) @ THD < 10% ( 7W + 7W @ THD < 1% )

Line Out Left / Right / Subwoofer

OSD Language

Function Keys Power, Source, Menu, Up/Down (Channel), +/-(Volume), Aspect.

Video Performance

Audio Performance Equalizer, Subwoofer, Auto Volume Control (AVC),

Other Control Sleep Timer, Auto Power Off.

Power Supply AC 100V ~ 240V , 50 / 60Hz

Power Consumption < 180 W

Composite (RCA jack) x 1

S-Video

H =

Composite x 1

S - Video x 1

English, French , German , Spanish , Italian ,

Finnish , Swedish, Dutch, Demark, Norway

Picture in Picture (PIP) , Comb-filter , 3D De-interlace , Canal Plus ,

Tele text , Aspect Ratio Control (ARC) , Auto Picture Control(APC) ,

Video Enhance , Noise Reduction , Picture by Picture (PBP) .

(typ.)

31.5 ~ 60KHz / f

= 56 ~ 75Hz

x 1

2.3 V32EMBB

ITEMS SPECIFICATION

Screen Size 32.02” TFT-LCD Panel (CMO) Aspect Ratio 16：9 Resolution 1366 x 768 (WXGA) Display Area (opening) H x V 714.96 mm x 404.6 mm

Panel

Function

Video Input

Digital Input

PC Input (analog)

Audio Input

Video Output

Output

Feature

Power Dimension W x H x D 964.8mm * 582.4mm * 279.8mm

Weight

(net)

Pixel Pitch(Sub Pixel) 0.519 mm x 0.519 mm Display colors 16,777,216 colors Contrast Ratio 1000 : 1 (typ.) Brightness (center) 550 cd / m

(typ.) Viewing Angle (CR>20) 176o Hor. / 176o Ver. (typ.) Response Time (GTG) 8 ms (typ.)

Broadcasting System PAL / SECAM Receiving Channel B / G, D / K, I and L / L’ (Multi-Europe) Sound System NICAM / A2 (IGR) Data Broadcasting

Teletext 255 pages (FLOF /TOP), Auto Program Searching (APS)

Video Color System PAL / SECAM / NTSC AV1 (scart) 21-pin Scart (RGB / CVBS / SVHS)

AV2 (composite)

Composite (RCA jack) x 1 S-Video x 1

AV3 (component) Y Pb Pr (720P / 1080i , HDTV ready)

HDCP / DVI HDCP 1.1 / DVI 1.0 x1

Signal Connection D-Sub 15 pin x1 PnP compatibility DDC / 2B Scanning Frequency f

HDTV Ready (via D-sub 15 pin) 720p, 1080i

31.5 ~ 60KHz / f

H =

Audio 1 Scart (build-in) x 2

Audio 2

Composite x 1

S - Video x 1 Audio 3 Component Audio 4 PC

SCART 1 TV SCART 2 TV / CVBS (scart 1) Composite (RCA jack) TV

Speaker ( build-in) 10W + 10W (rms) @THD < 10% ( 7W + 7W @ THD < 1% ) Audio Line Out Left / Right / Subwoofer

OSD Language

English, French , German , Spanish , Italian , Finnish , Swedish, Dutch, Demark, Norway

Function Keys Power, Source, Menu, Up/Down (Channel), +/-(Volume), Aspect.

Picture in Picture (PIP), Comb-filter, 3D De-interlace, Canal

Video Performance

Plus, Tele text, Aspect Ratio Control (ARC), Auto Picture Control (APC), Video Enhance, Noise Reduction,

Picture-by-Picture (PBP). Audio Performance Equalizer, Subwoofer, Auto Volume Control (AVC), Other Control Sleep Timer, Auto Power Off.

Power Supply AC 100V ~ 240V , 50 / 60Hz Power Consumption < 180 W

Without Accessories 22.2kg

= 56 ~ 75Hz

x 1 x 1

x 1 x 1 x 1

x 2

x 1

2.4 PC I/P Preset Timing Table:

Analog Input

Mode

Name

1 VGA 640 * 480 31.469 59.940 - - 25.175

2 VGA 640 * 480 37.500 75.000 - - 31.500

3 US TEXT 720 * 400 31.472 70.100 - + 28.325

4 STB 768 * 576 31.250 50.000 - - 29.750

5 SVGA 800 * 600 37.879 60.300 + + 40.000

6 SVGA 800 * 600 46.875 75.000 + + 49.500

7 XGA 1024 * 768 48.363 60.000 - - 65.000

H-Resoluti

V-Resoluti

H.Freq . (KHz)

V.Fr eq

. (Hz)

Polarit

Pixel

CLK

(MHz)

8 XGA 1024 * 768 56.476 70.000 - - 75.000

9 WSGA 1280 * 768 47.708 60.000 + - 80.150

10 WXGA 1366 * 768 48.54 59.93 + + 80

* The resolution and the frequencies are displayed on the screen may not exactly same as this list.

3. Connection

Applications

＆

NOTE:

Audio out L/R & Subwoofer out

The level of audio output cannot be changed using the volume , treble , and bass controls on your TV . These connectors should be used with an external audio amplifier that can be used to control the volume.

4. Controls Location

Main Power Switch

Before operating the LCD display or remote control, users must press MAIN POWER switch to ON. The MAIN POWER switch is located at the bottom-left back of the LCD display (near

by Power Inlet).

Function Key

5. Remote Control

Summary of Control Buttons

PIP Control

ON / OFF

PIP Source

SIZE

POSITION

Press to watch one of the video sources on Sub-display, whilst in PC mode. Press again to turn off the Sub-display.

Press to select the PIP window input source as :

▲▼ button : TV→ Video → S-Video → SCART 1 → SCART 2

Press → SCART 2 S.

To make the PIP window double, large, small and tiny.

Press to move the PIP window to: Top Left → Top Right → Bottom Right → Bottom Left → Repeat.

Other Function

Audio SWAP

ARC

APC

SOUND

SLEEP

SUB-PAGE/TIME

Exchange sound between main and sub source

Set the display aspect: Full→Normal→16:9 Zoom→Panoramic→Auto. For PC mode, only Regular and Full options are available. Note: not available for Panoramic under 1080i of CV mode.

Select the picture brightness & contrast to “Standard", "Movie", "Bright", „Manual“ and "clear".

Press to choose stereo, bilingqual, and monaural broadcasts.

Press to select a preset time interval for automatic power off.

Press “Sub-Page/Time“ to display the digital clock in TV mode.

6. Disassembly Instructions

Face down the LCD-TV:

Face down the LCD-TV on a smooth plane with a soft material to protect the panel faceplate.

A. Remove it and pull out it along the slot. B. Remove the plastic cover from the back cover.

C. Remove 4 screws from the Neck and then takes neck apart from the cover. D. Remove 2 screws and pull out it along the slot.

E. Remove 10 screws from the back cover. F. Remove 1 screw from the back cover and then take back cover apar

from the LCD TV.

G. Remove 3 screws from Power box.

Remove 4 screws from Main PCB Shield and Visa bracket apart fro

Panel Bracket.

I. Remove 8 screws from the Main PCB and then take Main PCB apart fro

the Main Bracket.

J. Remove 6 screws from the Panel Bracket.

+ 42 hidden pages