Service Manual HL42XD1

User Manual: Service manual HL42XD1

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Page Count: 53

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Service
Service
Service
Horizontal Frequency
31~68 kHz
TABLE OF CONTENTS
Description Page Description Page
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.
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING
Table of Contents........……...................................…........1
Important Safety Notice.......................................……......2
Revision List…………………………………………………3
1. General Specification.................................………........4
2. Operating Instructions…………………….……...….......5
2.1 The Use of Remote Control…….…………...…….......5
2.2 To Use the Menu…...…………………….…………......6
2.3 How to Connect…….…………………….…..…….....11
2.4 Front Panel Control Knobs……………….………......12
3. Input/Output Specification…………....................…....13
4. Mechanical Instructions…………………….................15
5. Repair Flow Chart ……………………….…….…….....19
6. PCB Layout ………………..………………....…..........23
6.1 Main Board………………..……………...…….….......23
6.2 Power Board……..…………..………….…..…….......25
6.3 Inverter Board……..…...……..…………..…….......28
6.4 Key Board………………………..……..……….......28
6.5 IR Board…………………………..……….…….......29
7. Adjustment..............................................................30
8. Block Diagram.…….................................................33
9. Wiring Diagram.……...............................................34
10. Schematic Diagram………..……..………………...35
10.1 Main Board…………….…………………...….......35
10.2 Power Board…..………....…………...……….......47
10.3 Inverter Board…..…..…....…………...……….......52
10.4 Key Board……………….………….………….......53
10.5 IR Board……………………………….……….......54
11. Exploded View……………………….………….…...55
12. BOM List……………….…………………………….57
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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.)
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1. General Specification
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2. Operating Instructions
2.1 The Use of Remote Control
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2.2 To Use the Menus
1. Press the MENU/EXIT button to display or close the main menu.
2. Use the Navigation Ring to move around to select, adjust or confirm an item in the OSD (On Screen Display)
menu.
Press the MENU/EXIT button to enter the main OSD. Adjust the items including Video menu, Audio menu,
Feature menu, Channel menu and VGA menu. However, some function items in the menus may only be enabled
in the particular source modes.
Channel Menu
The Channel menu in TV mode shows as below.
1. Tuning Band: Select TV source signal from the Air (antenna) or Cable (CATV).
2. Channel Strength: Show the intensity of the received DTV signal.
3. Auto CH Search: Automatically scan all NTSC / ATSC TV channels and then store in the channel table. In
channel scan process, the OSD can display the number of channels which had been found.
4. Add on CH search: Add channels which are new found.
5. Channels List: Show the channel List. User can edit (add/delete) the channel numbers.
6. Channel Labels: Show the NTSC / ATSC TV channel label menu for user modifying channel labels specifically.
7. FAV Channel Setting: Show the Favorite Channel List. User can edit (add/delete) the favorite channels.
Video Menu
The Video menu in most source modes shows as below. It provides several video adjustment items for user fine
tuning the video display. Only in VGA source mode, the Video menu simply provides Picture Mode, Color Temp,
Backlight, Aspect Ratio and Preset items.
1. Picture Mode: Adjust the best picture appearance from selecting the preset value of Vivid, Standard, PWR,
Theater, Sport, or Custom.
2. Brightness: Video brightness adjustment, the tuning range is 0 ~ 100.
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3. Contrast: Video contrast adjustment, the tuning range is 0 ~ 100.
4. Sharpness: Video sharpness adjustment, the tuning range is 0 ~ 100.
5. Color: Video color chroma adjustment, the tuning range is 0 ~ 100.
6. Tint: Video tint adjustment, the tuning range is R50 ~ G50.
7. Color Temp: Three color temperature modes. (Normal / Warm / Cool)
8. Backlight: Backlight strength adjustment, the tuning range is 0 ~ 30.
9. Aspect Ratio: Choose the display aspect: Standard/Fill/Overscan.
10. Preset: Restore the default video settings.
Audio Menu
The Audio menu in TV mode shows as below. It provides audio adjustment for user to modify the audio setting.
Audio language setting is only available with ATSC TV source, the option is disable under other source modes.
1. Sound Mode: Choose the sound mode: Standard, Movie, News, or Custom.
2. Bass: Bass tone adjustment, the tuning range is 0 ~ 63. (The default state is enabled)
3. Treble: Treble tone adjustment, the tuning range is 0 ~ 63. (The default state is enabled)
4. Balance: Audio balance adjustment, the tuning range is L50 ~ R50.
5. Audio Source: Select the audio source from Mono, Stereo, or SAP. (This function works in ATV only).
6. Audio Language: Change the audio language setting on ATSC TV programs. The number of the supported
audio languages depends on the ATSC TV programs. (English / Français / Español)
7. SPDIF: Digital audio output format. Select from RAW and PCM.
8. Speaker: Choose to turn on / off the TV internal speaker. The digital audio output signals and earphone output
signals will not be turned off even though the TV speaker is off. The default setting is On.
9. AVL: Choose On or off to adjust volume to be consistent across programs and channels automatically.
10. Preset: Restore the default audio settings.
Feature Menu
The Feature menu in TV mode shows as below. This menu gives users the most flexibilities to satisfy their generally
demands. According to the various requirements in different source modes, certain features should be hidden
(disable) on the menu. The details footnotes will be described clearly below.
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1. Menu Language: Select the menu display language. (English / Français / Español)
2. Time: Set current time. The sub-menu includes Time Mode, Time Zone and Daylight Savings.
[Time Mode] – Choose from Auto or Manual.
[Time Zone] – Set current time zone.
[Daylight Savings] – Set to On or Off.
3. Advanced Video: Provide the Noise Reduction, Adaptive Contrast, and DCR for enhancing video quality.
[Noise Reduction] – Gives four NR effect degrees, such as: Low, Mid, High and Off. The default setting is Mid.
[Adaptive Contrast] – Choose On or off to adjust the gamma after analyzing the input signal automatically.
[DCR] – Dynamic Contrast Ratio (DCR) auto adjusts the backlight of the screen.
[Preset] – Restore the default advanced video option settings.
4. Transparency: Adjust the transparency of the on-screen menu from range 1 to 10.
5. Password Setting: Change the 4-numeral parental control password. Three steps are required for changing the
password: Enter Old Password -> Enter New Password -> Confirm New Password. Note: This item is only available
in TV, Composite and S-Video source modes. The default password is ό0 0 0 0ύ.
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6. Parental Control: provide the parental Control (V-chip) function setting. Before entering the Parental Control
sub-menu, user has to key in the password first. Enter the Parental Locks item, then the user can modify the
restricted table about MPAA or TV Rating respectively. While exiting the sub-menu, the parental control function is
working. The inhibitive channels or source signals can be un-lock through pressing the V-CHIP key on the remote
control and then key in the correct password. Note: This feature is only available in TV, Composite and S-Video
source modes. (The default password is: 0 0 0 0.)
[Button Lock] – Select On or Off to lock or unlock the control buttons on the side panel of the TV. When this
function enables, the control buttons on your TV will be locked and TV will be controlled by remote control only.
[Block Unrated TV] – When Block Unrated TV is set to on, your TV will block unrated program.
[USA Parental Locks] – Set the parental control level by MPAA or TV Rating.
[Canadian Parental Locks] – Set the parental control level by English Rating or French Rating.
[Open V-Chip] – Open V-Chip is an advanced V-Chip rating system for digital channels that are received. The
rating table will be updated by downloading the RRT5 data for blocking.
7. Closed Captions Display: Select a closed caption options. (Off / On / With Mute)
8. Analog Captions: Select an analog caption options. (CC 1-4 / TEXT 1-4)
9. Digital Captions: Select a digital caption options. (Service 1-6)
10. Digital Captions Setup: Provide numerous options for setting the digital closed caption style in the sub-menu.
[Style] – Set to Automatic or Custom mode. If Custom mode is selected, user can modify the detail styles described
below. The setting result will be shown immediately on the bottom of the sub-menu OSD. Note: This feature is only
available in Digital TV (ATSC) mode.
[Size] – Digital closed caption font size, which can be set as Automatic, Small, Normal or Large.
[Font] – Digital closed caption font style, which can be chosen as Automatic, Default or Font 1 ~ 7.
[Text Color] – Automatic / White / Red / Green / Blue / Yellow / Magenta / Cyan / Black
[Text Opacity] – Automatic / Solid / Flashing / Transparent / Translucent
[Background Color] – Automatic / Black / White/ Red / Green / Blue/ Yellow / Magenta / Cyan
[Background Opacity] – Automatic / Solid / Flashing / Transparent / Translucent
[Edge Effect] – Automatic / None / Raised / Depressed / Uniform / Left Shadow / Right Shadow
[Edge Color] – Automatic / Red / Green / Blue / Yellow / Magenta / Cyan / Black / White.
11. Input Labels: User can edit the input labels.
12. Component Setting: This option only shows and is available in component mode, which provides fine tuning
component display.
[Phase] – Adjust Picture Phase to reduce Horizontal-Line noise. The tuning range is from 0 to 100.
[Preset] – Restore the default component setting values.
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13. Reset to Default: Restore all the default settings.
VGA Menu
This option only shows and is available in VGA mode, which provides several items for the VGA display fine tuning.
1. H-Position: Adjust the horizontal position of the picture. (0-100)
2. V-Position: Adjust the vertical position of the picture. (0-100)
3. Clock: Adjust picture clock to reduce Vertical-Line noise. (0-100)
4. Phase: Adjust Picture Phase to reduce Horizontal-Line noise. (0-100)
5. Auto Adjust: Adjust the settings automatically.
6. Preset: Restore the default VGA setting values.
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2.3 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. The white color band on the rear of the TV indicates this connection.
2. PC IN – Connect the video and audio cables from a computer here.
3. AV IN (AV/S-VIDEO) – Connect the primary 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. From left to right, 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. 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.
7. AUDIO OUT – Connect an external sound system with standard audio cable to the AUDIO OUT L and R jacks on
the back of your TV and to the AUDIO IN jacks on the amplifier.
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2.4 Front Panel Control Knobs
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3. Input/Output Specification
3.1 RGB Signal input
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
3.2 HDMI Digital connector
Pin No. Description Pin No. Description
1 TMDS Data2+ 11 TMDS Clock Shield
2 TMDS Data2 Shield 12 TMDS Clock-
3 TMDS 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+
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3.3 Signal type
AV (Composite Video input)
Video
System NTSC
Amplitude 1.0 V(p-p), negative sync.
Impedance 75 ohm terminated
S-Video (Y / C input)
S-Video
System NTSC
Y signal amplitude 1.0Vpp (including sync)
C signal amplitude 0.286Vpp
Impedance 75 ohm terminated
Component (Y, Pb/Cb, Pr/Cr input)
Component
System 1080i, 480p, 720p, 480i
Y signal amplitude 1.0Vpp (including sync)
Cr, (R-Y) / Cb, (B-Y)
Signal amplitude ±0.35Vpp, 75 ohm
Impedance 75 ohm terminated
Y = 0.299R + 0.587G + 0.114B
(R- Y)= 0.701R + 0.587G + 0.114B
(B- Y)= 0.299R + 0.587G + 0.886B
3.4 PC Timings List
Vesa Modes
Horizontal Vertical
Mode Resolution Total
Nominal
Freq.
(KHz)
Sync
Polarity
Nominal
Freq.
(Hz)
Sync
Polarity
Nominal
Pixel
Clock
(MHz)
640x480@60Hz 800 x 525 31.469 N 59.940 N 25.175
640x480@72Hz 832 x 520 37.861 N 72.809 N 31.500
VGA
640x480@75Hz 840 x 500 37.500 N 75 N 31.500
DOS 720x400@70Hz 900 x 449 31.469 N 70.087 P 28.322
800x600@56Hz 1024 x 625 35.156 P 56.250 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
SVGA
800x600@75Hz 1056 x 625 46.875 P 75 P 49.500
1024x768@60Hz 1344x806 48.363 N 60.004 N 65.000
1024x768@70Hz 1328x806 56.476 N 70.069 N 75.000
XGA
1024x768@75Hz 1312x800 60.023 P 75.029 P 78.750
CVT-0.92M9 1280x720@60Hz 1664x748 45.000 P 60.000 P 74.250
WXGA 1280x768@60Hz 1440x790 47.396 P 59.995 N 68.250
SXGA 1280x1024@60Hz 1688x1066 63.981 P 60.020 P 108.000
WXGA+ 1440x900@60Hz 1600x926 55.469 P 59.901 N 88.750
WSXGA+ 1680x1050@60Hz 1840x1080 65.290 N 59.954 P 146.250
FHD 1920x1080@60Hz 2200x1125 67.500 P 60.000 P 148.500
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4. Mechanical Instructions
1. Remove the stand and base.
2. Remove rear cover.
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3. Release the connectors and remove inverter board.
4. Remove main board and power board.
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5. Remove BKT, speakers IR board and key board.
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6. Remove the BKT and separate panel and bezel.
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5. Repair Flow Chart
No Picture (LED Orange)
Change key board/IR board
Check U401 Change U401
Check key board/IR board
No picture
OK
NG
OK
NG
Check 24V power supply
OK
Check the power supply circuit
NG
Check main board Standby power supply Change U706
OK
NG
Check I
2
C bus Check I
2
C communication
NG
OK
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Abnormal Display
No Sound
Check TV system setup
Reset source
NG
Replace the filter or resistance
RF signal
Check Tuner
Replace Tuner
Check LVDS cable
Check input
Replace LVDS cable
Check panel Replace panel
OK
OK
NG
OK
OK
NG
OK
OK
NG
OK
Check the source Reset source
NG
OK
Check input signal TV SIF Check TV
system Reset TV system
NG
Check TU201
NG
Change TU201
Check U401
OK
OK Change U401
NG
Check U602
OK
NG Change U602
Check speaker
NG
Change speaker
Check if mute
OK
Check signal filter circuit
Check the source
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No Power (No LED Indicator)
No Display (LED Indicator Green)
NG
Check power cord and board interface Plug in power cord and interface
OK
Check F901, BD901, C929 NG Replace F901 or BD901 or C929
OK
Check IC901
Check D910, C945, C946, C947
NG Replace IC901
OK
Check T901
OK
Replace T901
Replace D910, C945, C946, C947
NG
NG
Check the source
OK
Reset source
Check LVDS cable NG Reset LVDS cable
OK
Check IC904 circuit NG Replace IC904 or the correlative part
OK
OK
Check U401 NG Replace main board
OK
Check panel
NG Replace panel
Check IC902 NG Replace IC902 or the correlative part
OK
Check T902 NG Replace T902
OK
Check D907, D904
NG
Replace D907, D904
NG
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Key Board
OSD is unstable or not working
Is Key Pad Board connecting normally? Connect Key Pad Board
Is Button Switch normally? Replace Button Switch
Y
Is Key Pad Board Normally? Replace Key Pad Board
Check Main Board
N
N
Y
Y
N
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6. PCB Layout
6.1 Main Board
715G3269 1
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6.2 Power Board
715G3351 1
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6.3 Inverter Board
715G3358 1
6.4 Key Board
715G3528K01000001M
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6.5 IR Board
715T3107 1
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7. Adjustment
7.1 ADC Adjustment
ĉ. In the TV mode adjust volume to zero, press menu key and then press number key 1 9 9 9. It will
achieve the factory mode. Select the item of White Balance and press right key to enter it.
Take BBY factory menu for example:
Change TV, press the item “Current Source” to Component mode and change signal to 1080i mode, press the item
“Auto Color”; Change TV, press the item “Current Source” to PC mode and change signal to PC TIMING
137(1024X768) Pattern 147 (16 Grays), press the item “Auto Color”.
7.2 White Balance, Luminance Adjustment
Approximately 30 minutes should be allowed for warm up before proceeding white balance adjustment.
Before started adjust white balance, please set the Ca210 Channel to 05 Channel and set it’s mode to xyLv mode.
Color Temp. Cold Normal Warm
x 266 285 313
y 277 293 329
HDMI Mode
Y Panel Max Luminance
Note: The tolerance of the Cold color coordinates should be less than ± 15; The tolerance of the Normal
color coordinates should be less than ± 30; The tolerance of the Warm color coordinates should be less than
± 30;
How to setting the Ca210 channel, you can reference to Ca210 user guide or simple use the “Memory CH” up or
down to set the channel to 05 channel, and use the “Mode” key to set the mode to xyLv.
Following is the procedure to do white-balance adjust
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Note: We do the HDMI white balance to cover the white balance of all source modes, this method is meeting
to the Zoran 775 software.
HDMI mode:
ĉ. In the TV mode adjust volume to zero, press menu key and then press number key 1 9 9 9. It will
achieve the factory mode. Select the item of White Balance and press right key to enter it.
Take BBY factory menu for example:
Ċ.before to adjust the white balance, please press the factory mode OSD of “Reset” to reset all white
balance factory setting.
In the White Balance you can adjust 8 items.
1> R Offset, G Offset, B Offset R, G, B Offset adjust.
2> R Gain, G Gain, B Gain R, G, B Gain adjust.
3> ZR-Bright adjust;
4>ZR-Contrast adjust;
5>ZR-T Color Temp adjust;
ċ. Gain adjustment:
A. Adjust Cool color-temperature:
1. Set the pattern generator to pattern 104 or 0 IRE pattern. And adjust the Item “ZR-Bright” to min luminance.
2. Switch the Ca210 to xyLv-mode (with press “MODE” button)
3. Switch the Ca210 channel to Channel 05 (with up or down “MEMORY CH” button)
4. The LCD-indicator on Ca210 will show x =266, y =277, Lv can adjust to max luminance.
5. Use the item R Offset and B Offset adjust to Adjust black balance: use 20 IRE(Pattern 190) signal, and adjust the
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black balance, until the Ca210 show x =266, y =277.
6. Use the item R Gain and B Gain to adjust white balance: use 100 IRE (Pattern 105) signal, and adjust the white
balance, until the Ca210 show x =266, y =277.
7. Adjust item “ZR-Contrast” to check color temperature is saturation or not: Add by 7 steps and then to adjust the
item R Gain and item B Gain to check the color temperature is saturation or not, until is saturation.
8. Enter the item “Color Temp” to select another color temperature to adjust.
B. Adjust Normal temperature:
1. Set the pattern generator to pattern 104 or 0 IRE pattern. Adjust the Item “ZR-Bright” value and can adjust to min
luminance
2. Switch the Ca210 to TƸuvLv-mode (with press “MODE” button)
3. Switch the Ca210 channel to Channel 05 (with up or down “MEMORY CH” button)
4. The LCD-indicator on Ca210 will show T=9300K.
5. Adjust the Color Temp item: Normal, until Ca210 indicator reached the value T=9300k.
C. Adjust Warm color-temperature:
1. Set the pattern generator to pattern 104 or 0 IRE pattern. Adjust the Item “ZR-Bright” value and can adjust to min
luminance
2. Switch the Ca210 to TƸuvLv-mode (with press “MODE” button)
3. Switch the Ca210 channel to Channel 05 (with up or down “MEMORY CH” button)
4. The LCD-indicator on Ca210 will show T=6500K.
5. Adjust the Color Temp item: Warm, until Ca210 indicator reached the value T=6500k.
Press “Exit” button on remote control to quit from factory mode.

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