Haier L32C1120 Schematic

32″ LCD TV Haier L32C1120

Service

31~75 KHz

Description Page Description Page

Table of Contents.......……....................................…........1

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

Revision List…………………………………………………3

1. General Specification.................................………........4

2. Operating Instructions…………………….……...….......6

2.1 The Use of Remote Control…….…………...…….......6

TABLE OF CONTENTS

6.3 Led Board………………………..……..……….......34

6.4 Key Board………………………..……..……….......34

6.5 IR Board…………………………..……….…….......35

7. Adjustment……………….……….…………...………36

7.1 ADC Adjustment……………………..……...………36

7.2 FW Upgrade.………………………………...………37

Horizontal Frequency

2.2 To Use the Menus…...………………….….………......7

2.3 Front Panel Control Knobs……………….………......15

2.4 How to Connect…….…………………….…..…….....16

3. Input/Output Specification…………....................…....17

4. Mechanical Instructions…………………….................19

5. Repair Flow Chart ………………………………………22

6. PCB Layout …………...………………………………...29

6.1 Main Board………..…………………...……….….......29

6.2 Power Board……..…………..………….…..…….......31

SAFETY NOTICE

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

7.3 The Writing VGA & HDMI EDID….………...………41

8. Block Diagram.…….................................................46

9. Wiring Diagram.……...............................................47

10. Schematic Diagram………..……..………………...48

10.1 Main Board…………….…………………...….......48

10.2 Power Board………..…....…………...……….......60

10.3 Led Board……………………..……..……….......62

10.4 Key Board……………….………….………….......63

10.5 IR Board……………………………….……….......64

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

ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES.

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

Important Safety Notice

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

procedures recommended by Haier 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. Haier 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, Haier has not

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

recommended by Haier 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, Haier Company will be referred to as Haier.

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 Haier.

Haier 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.)

Revision List

Version Release Date Revision Instructions Model

A00 Jan.24,2011 Initial release E32AGZNKWUH3NNX

1. General Specification

Note

• This model complies with the specifications listed below.

• Designs and specifications are subject to change without notice.

• This model may not be compatible with features and/or specifications that may be added in the future.

Model No. L32C1120

DISPLAY

Viewable 31.5"

Television System NTSC standard, ATSC standard (8-VSB, Clear-QAM)

VHF: 2 through 13 UHF: 14 through 69

Channel Coverage

Rear Connectors

Cable TV: Mid band (A - 8 through A - 1, A through I),

Super band (J through W), Hyper band (AA through ZZ, AAA, BBB), Ultra band (65 through 94, 100 through 135)

CONNECTIONS

Tuner input (75Ω) AV IN: AV/S-Video and L/R audio input PC IN:D-SUB and PC Audio (Headphone mini-jack)

Supported scan rate: 640x480@60/72/75Hz, 720x400@70Hz,

800x600@56/60/72/75Hz, 1024x768@60/70/75Hz, 1280x720@60Hz, 1280x768@60Hz,

Note:

1360x768@60Hz

Recommended: 1360x768@60Hz

Component Video and L/R Audio input

Supported resolution: 480i@59.94/60Hz, 480p@59.94/60Hz,

720p@59.94/60Hz,1080i@59.94/60Hz, 1080p@59.94/60Hz.

HDMI input

Supported scan rates: 480i@59.94/60Hz,480p@59.94/60Hz,

720p@59.94/60Hz,1080i@59.94/60Hz, 1080p@59.94/60/24/30Hz.

Component 1/2 AV/S-Video Input SPDIF HDMI 1/2 Audio Out

HDMI 3/4

Side Connectors

Dimensions with Stand (W x H x D)(inch) Dimensions without Stand (W x H x D)(inch)

Weight with Stand 20.94(lbs)

Weight without Stand and Base

AV In 2 Earphone Output USB Port

WEIGHT & DIMENSIOIN

31.07x22.30x9.06

31.07x20.07x3.74

16.75(lbs)

Model No. L32C1120

WALL MOUNTING

VESA-compatible wall bracket (W x H)

Screw type Metric 6 x 10 mm

Power Consumption 150W

Standby <1W

Mains Power 120V~60Hz

Audio Power 10W + 10W

Ambient Temperature 41°F~95°F

Supplied Accessories

200 x 200 mm

POWER

PACKAGE CONTENTS

TV unit x 1 Base x 1 Remote control x 1 (with two size AAA alkaline batteries) Screws x 6 (for 32" only) User manual x 1 Registration Card x 1

(

2. Operating Instructions

2.1 The Use of Remote Control

POWER

Press to power ON/OFF (standby) TV. Note: TV is never completely power off unless physically unplugged.

PICTURE

Press to switch the picture mode.

AUDIO

Press to switch the audio mode.

ARC

Press to switch the display mode: Normal, Zoom1, Wide, Zoom2, or HDMI PC mode(Only for HDMI Video Source).

CCD

Press to switch the closed caption type: CC On/CC Off/CC On with mute.

MTS/SAP

Press to activate the NTSC TV sounds, Switch Stereo, SAP or Mono for ATV/ switch, audio languages for DTV.

SLEEP

Press to set the sleep timer (off / 5 / 10 / 15 / 30 / 60 / 90 / 120 / 180 /240 mins).

0 ~ 9 / • number

Press to enter a TV channel number (Press "." to choose the subchannel).

INPUT

Press "INPUT" to open the Source List.

Press to open or exit the menu.

MUTE

Switch the sound on/off.

CH+ / CH -

● Menu is displayed: Press CH+ or CH- to navigate up or down.

● Menu not displayed: Press CH+ or CH- to browse through the TV channels.

VOL+ / VOL-

● Menu is displayed: Press VOL+ or VOL- to navigate right or left.

● Menu not displayed: Press VOL+ or VOL- to adjust volume.

ENTER

Press to confirm a selection.

EXIT

Press to exit menu or on screen display

OSD).

RECALL

Press to display the previous channel.

DISPLAY

Press to show the information about the input source, TV channel, display resolution and current time.

GUIDE

Press to display the Electronic Program Guide.

FAVORITE

Press "FAVORITE" to open the Favorite Channel List.

CH.LIST

Press to display the Channel List. For Multimedia use only.

USB

● For non JPEG/MP3 mode: Press to display "Multimedia List" menu.

● For JPEG/MP3 mode: Press to toggle MP3/JPEG mode.

PLAY/PAUSE

Press to toggle Play/Pause function in Multimedia source.

STOP

Press to Stop playing in Multimedia source.

REPEAT

Press to toggle Repeat On/Off mode in MP3 MusicBox.

REV

Press to go to the Last folder / photo in JPEG Viewer.

FWD

Press to go to the Next folder / photo in JPEG Viewer.

Press to go to the First folder / photo in JPEG Viewer. Press to skip current file playing and play the previous file during playing state in MP3 MusicBox.

Press to go to the Final folder / photo in JPEG Viewer. Press to skip current file playing and play the next file during playing state in MP3 MusicBox.

2.2 To Use the Menus

8 9

10 11 12 13

2.3 Front Panel Control Knobs

1. INPUT Press to select the input source.

2. MENU Press to open or exit the OSD (on-screen display) menu.

3. VOL + Press to increase the sound volume.

4. VOL - Press to decrease the sound volume.

5. CH + Press to increase the channel number.

6. CH - Press to decrease the channel number.

POWER Press to turn on / off (standby) the TV set.

2.4 How to Connect

1. HDMI - Connect the primary source for digital video such as a DVD multimedia player or set top box through this all digital connector.

2. PC IN - Connect the video and audio cables from a computer here.

3. AV IN (AV/S-VIDEO) - Connect the input source for composite video devices, such as a VCR or video game. Use the white and red connectors to connect the external audio from the same source. The signal being carried by the S-Video cable and connector, if connected, will take priority over the Video RCA connector (yellow connector).

4. COMPONENT (Y/Pb/Pr with Audio L/R) - Connect the primary source for component video devices such as a DVD Player or set top box here. Use red for Pr, blue for Pb, green for Y, red for right audio (R) and white for left audio (L) inputs.

5. ANTENNA/CABLE DIGITAL/ANALOG - Connect to an antenna or digital cable (out-of-the-wall, not from Cable Box) for Digital TV.

6. AUDIO OUT - Connet the standard audio cable to the AUDIO OUT (L/R) jacks on he back of your TV and to the AUDIO IN jacks on the external sound system.

7. SPDIF (Optical Digital Audio Out) – When a digital audio signal is associated with the input selected for viewing, the digital audio will be available on this SPDIF connection to your home theater system.

8. USB PORT - Insert a USB storage device to the USB port to view JPEG photos, listen to MP3 music, or to run the [Time Shift] function. (Please refer to pages 22-24 for more information.)

9. Earphone Output - Connect to the headphones. When the headphone is inserted to the plug, all the speakers will be muted. Once your equipment is connected, use the following procedure to view the input signal: Press the Source button on the remote control to select the relevant source to view. (ex: Press the INPUT button to select “Component” if you have connected a DVD palyer to Component input.)

3. Input/Output Specification

3.1 Input Signal Connector

D-SUB

HDMI

Pin No. Description Pin No. Description

1 Red Video 9 No Pin

2 Green Video 10 Sync Ground

3 Blue Video 11 SDA(Remote Control)

4 SCL(Remote Control) 12 Serial Data for DDC

5 Ground 13 H-Sync

6 Red Ground 14 V-Sync

7 Green Ground 15 Serial Clock for DDC

8 Blue Ground

Pin No. Description Pin No. Description

1 TMDS Data2+ 11 TMDS Clock Shield

2 TMDS Data2 Shield 12 TMDS Clock-

3 TDMS Data2- 13 CEC

4 TMDS Data1+ 14 NC

5 TMDS Data1 Shield 15 SCL

6 TMDS Data1- 16 SDA

7 TMDS Data0+ 17 DDC/CEC Ground

8 TMDS Data0 Shield 18 +5V Power

9 TMDS Data0- 19 Hot Plug Detect

10 TMDS Clock+

3.2 Input Signal Timing

Analog RGB

Horizontal Vertical

VESA MODES

Nominal

Mode Resolution Total

640x480@60Hz 800 x 525 31.469 N 59.94 N 25.175

VGA

DOS 720x400@70Hz 900 x 449 31.469 N 70.087 P 28.322

SVGA

XGA

CVT-0.92M9 1280x720@60Hz 1664 x 748 44.722 N 59.855 P 74.5

WXGA 1280x768@60Hz 1440 x 790 47.396 P 59.995 N 68.25

WXGA 1360x768@60Hz 1720 x 795 75 P 60.02 P 162

640x480@72Hz 832 x 520 37.861 N 72.809 N 31.5

640x480@75Hz 840 x 500 37.5 N 75 N 31.5

800x600@56Hz 1024 x 625 35.156 P 56.25 P 36

800x600@60Hz 1056 x 628 37.879 P 60.317 P 40

800x600@72Hz 1040 x 666 48.077 P 72.188 P 50

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

1024x768@60Hz 1344 x 806 48.363 N 60.004 N 65

1024x768@70Hz 1328 x 806 56.476 N 70.069 N 75

1024x768@75Hz 1312 x 800 60.023 P 75.029 P 78.75

Frequency

(KHz)

Sync

Polarity

Nominal

Freq.

(Hz)

Sync

Polarity

HDMI

VESA MODES

Horizontal Vertical

Nominal

Mode Resolution Total

DOS 720 x 400 900 x 449 31.469 N 70.087 P 28.322

VGA 640 x 480 800 x 525 31.469 N 59.94 N 25.175

SVGA 800 x 600 1056 x 628 37.879 P 60.317 P 40

XGA 1024 x 768 1344 x 806 48.363 N 60.004 N 65

WXGA 1280 x 768 1664 x 798 47.396 P 59.995 N 68.25

CVT-0.92M9 1280 x 720 1664 x 748 44.772 N 59.855 P 74.5

WXGA 1360 x 768@60Hz 1720 x 795 75 P 60.02 P 162 1080P 1920 x 1080P 2200 x 1125 67.5 60 148.5

720P 1280 x 720P 1650 x 750 45 60 74.25 1080i 1920 x 1080i 2200 x 1125 33.75 60 74.25 480P 720 x 480P 858 x 525 31.5 60 27.03

480i 720 x 480i 1716 x 525 15.75 60 13.51

Frequency

(KHz)

Sync

Polarity

Nominal

Freq.

(Hz)

Sync

Polarity

Nominal

Pixel Clock (MHz)

Nominal

Pixel Clock (MHz)

4. Mechanical Instructions

Step1. Remove the STAND HINGE and BASE.

Step2. Remove the REAR COVER.

Step3. Remove the POWER CORD.

Step4. Remove the MAIN BOARD, POWER BOARD and SPEAKERS.

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