Hyundai hlcd 32zt4 schematic

32″ LCD TV Hyundai HLCD-32ZT4

Service

Horizontal Frequency

31KHz-60KHz

TABLE OF CONTENTS

Description Page Description Page

Table Of Contents.......……..............................…........1

Important Safety Notice……….……………………….……2

Revision List.…........................................……......3

1. Monitor Specification.................................………........4

2. Operating Instructions……………...……….……….......5

2.1 The Use Of Remote Control..……………...................5

2.2 Front Panel Control Knobs.…...............……...............6

2.3 OSD Operations…...………........................…............7

2.4 How To Connect.……….….……......………..............14

3 Input/Output Specification…………..........................15

6. White Balance Luminance Adjustment….…….......26

7. PCB Layout ………….………………….…....….......27

7.1 Main Board.………..........................................27

7.2 Power Board………..…..…..............................30

7.3 IR Board….………..................….......................33

7.4 Key Board……….....….......................... ...... ...... ..34

8. Block Diagram.……….….........................................35

9. Schematic Diagram……………...…………………...36

9.1 Main Board……………..…..………………………..36

9.2 Power Board..............….....................................52

3.1 Input Signal Connector……......................................15

3.2 RGB Input Signal Timing …….....……......................16

4. Mechanical Instructions………………...…..................17

5. Repair Flow Chart ……………………….……….....21

SAFETY NOTICE

ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE

CHASSIS AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING

ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES.

10.Exploded View………………….....................…..53

11.BOM List…............................................................55

12.Different Parts List…..............................................85

CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING

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32″ LCD TV Hyundai HLCD-32ZT4

Important Safety Notice

Proper service and repair is important to the safe, reliable operation of all AOC Company Equipment. The service

procedures recommended by AOC and described in this service manual are effective methods of performing service

operations. Some of these service operations require the use of tools specially designed for the purpose. The

special tools should be used when and as recommended.

It is important to note that this manual contains various CAUTIONS and NOTICES which should be carefully read in

order to minimize the risk of personal injury to service personnel. The possibility exists that improper service

methods may damage the equipment. It is also important to understand that these CAUTIONS and NOTICES ARE

NOT EXHAUSTIVE. AOC could not possibly know, evaluate and advise the service trade of all conceivable ways in

which service might be done or of the possible hazardous consequences of each way. Consequently, AOC has not

undertaken any such broad evaluation. Accordingly, a servicer who uses a service procedure or tool which is not

recommended by AOC must first satisfy himself thoroughly that neither his safety nor the safe operation of the

equipment will be jeopardized by the service method selected.

Hereafter throughout this manual, AOC Company will be referred to as AOC.

WARNING

Use of substitute replacement parts, which do not have the same, specified safety characteristics might create

shock, fire, or other hazards.

Under no circumstances should the original design be modified or altered without written permission from AOC.

AOC assumes no liability, express or implied, arising out of any unauthorized modification of design.

Servicer assumes all liability.

FOR PRODUCTS CONTAINING LASER:

DANGER-Invisible laser radiations when open AVOID DIRECT EXPOSURE TO BEAM.

CAUTION-Use of controls or adjustments or performance of procedures other than those specified herein may

result in hazardous radiation exposure.

CAUTION -The use of optical instruments with this product will increase eye hazard.

TO ENSURE THE CONTINUED RELIABILITY OF THIS PRODUCT, USE ONLY ORIGINAL MANUFACTURER'S

REPLACEMENT PARTS, WHICH ARE LISTED WITH THEIR PART NUMBERS IN THE PARTS LIST SECTION OF

THIS SERVICE MANUAL.

Take care during handling the LCD module with backlight unit

-Must mount the module using mounting holes arranged in four corners.

-Do not press on the panel, edge of the frame strongly or electric shock as this will result in damage to the screen.

-Do not scratch or press on the panel with any sharp objects, such as pencil or pen as this may result in damage to

the panel.

-Protect the module from the ESD as it may damage the electronic circuit (C-MOS).

-Make certain that treatment person’s body is grounded through wristband.

-Do not leave the module in high temperature and in areas of high humidity for a long time.

-Avoid contact with water as it may a short circuit within the module.

-If the surface of panel becomes dirty, please wipe it off with a soft material. (Cleaning with a dirty or rough cloth may

damage the panel.)

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32″ LCD TV Hyundai HLCD-32ZT4

Revision List

Version Release Date Revision Instructions TPV Model

E327AZNSBWH2NN

A00 Nov-30-2007 Initial Release

E327AZNSBWH5NN

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32″ LCD TV Hyundai HLCD-32ZT4

1. Monitor Specification

Item Specification

Screen Size 32” TFT-LCD Panel

LCD Panel

VGA Function

TV Function

Video Input

Aspect Ratio

Resolution 1366 x768 (XGA)

Display Area 697.685 (H) x 392.256(V)

Pixel Pitch 0.51075 mm (H) X 0.51075 mm

Display Colors 16.7 million

Lamp Type/Life 60000 hr

Color Temperature Cool / Warm/Normal

Input support

definition

TV Standard ATSC

Sound System MTS

Color systems NTSC

AV RCA x 1

S-VIDEO S-Videox 1

Component YPbPr x 1 Audio L/R x 1

16 : 9

Could support to 1360*768

This product could only support to 60Hz, ‘Input out of range’

will displayed when the input vertical frequency out of 60Hz

Audio L/R x 1

Audio output Audio output: L / R

Table Stand Yes

Wall Mount VESA 100 x 100 mm

Power

Environment

Dimension

Net weight Without accessory 12 Kg

Accessory

Power AC100V-240V, 50/60Hz

Power Consumption <180W

Temperature + 0 °C ~ + 40 °C

storage - 10 °C ~ + 50 °C

operating 10% ~ 85%

W x H x D (without

stand)

Remote controller, Batteriesx2, Power cord, Signal Cable,

Audio Cable, User manual

Speaker (built-in): Two 10 watt speakers

Headphone Mini-jack for stereo (3.5ø)

805.90 x 604.95 x 238.29 (mm)

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32″ LCD TV Hyundai HLCD-32ZT4

2. Operations Instructions

2.1 The Use of Remote Control

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32″ LCD TV Hyundai HLCD-32ZT4

2.2 Front Panel Control Knobs

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32″ LCD TV Hyundai HLCD-32ZT4

2.3 OSD Operations

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32″ LCD TV Hyundai HLCD-32ZT4

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32″ LCD TV Hyundai HLCD-32ZT4

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32″ LCD TV Hyundai HLCD-32ZT4

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32″ LCD TV Hyundai HLCD-32ZT4

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32″ LCD TV Hyundai HLCD-32ZT4

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32″ LCD TV Hyundai HLCD-32ZT4

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32″ LCD TV Hyundai HLCD-32ZT4

2.4 How to Connect

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32″ LCD TV Hyundai HLCD-32ZT4

3. Input/ Output Specification

3.1 Input Signal connector

This procedure gives you instructions for installing and using the LCD TV display.

Lay the display on the desired operation and plug the power cord into a convenient AC outlet. Three-wire power cord

must be shielded and is provided as a safety precaution as it connects the chassis and cabinet to the electrical

conduct ground. If the AC outlet in your location does not have provisions for the grounded type plug, the installer

should attach the proper adapter to ensure a safe ground potential.

Connect the 15-pin D-SUB 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

Pin No. Description

1 Red Video

2 Green Video

3 Blue Video

4 SCL (Remote Control)

5 GROUND

6 Red Ground

7 Green Ground

8 Blue Ground

9 No Pin!

10 Sync Ground

11 SDA (Remote Control)

12 Serial Data for DDC

13 H-Sync.

14 V-Sync.

15 Serial Clock for DDC

Apply power to the display by turning the power switch to the "ON" position and allow about ten seconds for Panel

warm-up. The Power-On indicator lights "GREEN" when the display is on.

With proper signals feed to the display, a pattern or data should appear on the screen, adjust the brightness and

contrast to the most pleasing display, or press auto-adjust to get the best picture-quality.

This TV (with PC function) has power saving function following the VESA DPMS. Be sure to connect the signal

cable to the PC.

If your TV requires service, it must be returned with the power cord.

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32″ LCD TV Hyundai HLCD-32ZT4

3.2 RGB Input Signal Timing

VESA MODES

Mode Resolution Total

640x480@60Hz 800 x 525 31.469 N 59.940 N 25.175

VGA

SVGA

XGA

WXGA 1360x768@60Hz 1792x795 47.712 P 60.015 P 85.5

640x480@72Hz 832 x 520 37.861 N 72.809 N 31.500

640x480@75Hz 840 x 500 37.5 N 75 N 31.500

800x600@56Hz 1024 x 625 35.156 P 56.25 P 36.000

800x600@60Hz 1056 x 628 37.879 P 60.317 P 40.000

800x600@72Hz 1040 x 666 48.077 P 72.188 P 50.000

800x600@75Hz 1056 x 625 46.875 P 75 P 49.5

1024x768@60Hz 1344x806 48.363 N 60.004 N 65.000

1024x768@70Hz 1328x806 56.476 N 70.069 N 75.000

1024x768@75Hz 1312x800 60.023 P 75.029 P 78.750

Horizontal Vertical

Nominal

Frequency

(KHz)

Sync

Polarit

y

Nominal

Sync

Freq.

Polarity

(Hz)

Nominal

Pixel

Clock

(MHz)

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32″ LCD TV Hyundai HLCD-32ZT4

4. Mechanical Instructions

Step Figure Description

Lay the

LCD-TV on a

Preparation

Remove

the stand.

flat, soft and

clean

surface.

Remove the

screws

remarked on

red to

remove the

stand.

Remove

rear cover.

Remove the

screws

marked in

17

red to

remove the

rear cover.

32″ LCD TV Hyundai HLCD-32ZT4

Remove the

Remove

shield

cover.

screws

marked in

red to

remove the

shield cover.

Remove IO

BKT.

Remove the

screws in red

marked to

remove IO

BKT.

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32″ LCD TV Hyundai HLCD-32ZT4

Remove the

Remove

the main

board,

power

board.

Remove

Speakers.

screws

marked in

red to

remove the

main board,

power

board .

Remove the

screws

marked in

red to

remove

the

Remove

the PCB

BKT

speakers

and the

side board.

Remove the

screws

marked in

red to

remove the

PCB BKT.

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32″ LCD TV Hyundai HLCD-32ZT4

Remove

the PANEL

BKT(L and

R)

Remove the

screws

marked in

red to

remove the

PANEL

BKT(L and

R)

The end

N/A

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32″ LCD TV Hyundai HLCD-32ZT4

5. Repair Flow Chart

5.1 No Power ( No LED indicator)

Check power cord and board interface

OK

Check F901, BD901, NR901, C919, C973

Check Q903, IC903, D915, T901

OK

Check IC907, IC908, IC904, ZD901, D905, D914

OK

Check ZD931, ZD903, Q905, Q908, Q907

OK

NG

Check B+ loop

NG

Replace correlative organ

Plug in power cord and interface

Replace F901 BD901 NR901 C919, C973

Replace Q903, IC903, D915, T901

Replace IC907, IC908, IC904, ZD901, D905,D914

ReplaceZD931, ZD903, Q905, Q908, Q907

OK

Check Q909, Q910

NG

Replace Q909, Q910

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32″ LCD TV Hyundai HLCD-32ZT4

5.2 Can not start (LED indicator yellow)

Check key board

NG

OK

Check 5V SB

OK

Check PWR_ON signal

OK

NG

Check RELAY-SW signal

NG

Check main board power supply part

OK

NG

Check U401

OK

Repair the key board

Return to “5.1”

NG

Check IC904, Q904

Check I2C communication

Replace Q910, Q909,Q912,Q911

Replace U401

Replace IC904 or Q904

Check I2C communication

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32″ LCD TV Hyundai HLCD-32ZT4

5.3 Abnormal display

Check the source

OK

Check signal filter circuit

OK

NG

Reset source

NG

TV signal Check TV system setup

NTSC, AV

Component, PC signal

HDMI Check

Replace the filter or inductance

OK

Check TU1

Check U108

Check U107

Check U414, U415

NG

Replace TU1

Replace U108

NG

Replace U107

Replace U414, U415

OK

Check U401

NG

Replace U401

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32″ LCD TV Hyundai HLCD-32ZT4

A

5.4 No sound

Check the source

OK

Check signal filter circuit

OK

Check Earphone jack

OK

Check U401

OK

Check U601, U6A1

OK

Check speaker

NG

Reset source

NG

SIF signal Check TV system setup

V, Co mponent, PC signal

Replace the filter or inductance

Replace the Earphone jack

OK

Check TU1

Replace U401

Replace U601 or U6A1

Replace speaker

NG

Check U103

OK

Check U101

Replace TU1

NG

Replace U103

Replace U101

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32″ LCD TV Hyundai HLCD-32ZT4

5.5 Key Board

OSD is unstable or not working

Is Key Pad Board connecting normally?

OK

Is Button Switch normally?

OK

NG

Connect Key Pad Board

NG

Replace Button Switch

Is Key Pad Board Normally?

OK

Check Main Board

NG

Replace Key Pad Board

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32”LCD TV Hyundai HLCD-32ZT4

6. White Balance, Luminance Adjustment

It is not necessary to adjust the white balance of the TV.

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