Haier LT19Z6 User manual

LEDTV
1
Service
Service
Service
Horizontal Frequency
31.5~48KHz
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
6.1 Main Board………………..…………...…….….......40
6.2 Power Board…..…………..………….…..…….......42
6.3 Key Board………………………..……..……….......49
6.4 IR Board…………………………..……….…….......49
7. Adjustment..............................................................50
8. Block Diagram.…….................................................52
9. Wiring Diagram.……...............................................53
10. Schematic Diagram………..……..………………...56
10.1 Main Board…………….…………………...….......56
10.2 Power Board………..…....…………...……….......69
10.3 Key Board……………….………….………….......75
10.4 IR Board……………………………….……….......76
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…….…………………….…..…….....22
2.4 Front Panel Control Knobs……………….………......25
3. Input/Output Specification…………....................…....27
4. Mechanical Instructions……………………................31
5. Repair Flow Chart ……………………….…….…….....35
6. PCB Layout ………………..………………....…..........40
LT19Z6
LTF22Z6
LTF24Z6
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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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Revision List
Version Release Date Revision Instructions Model
A00 Jul.09,2010 Initial Release E19AM2NBWNH6NS
A01 Apr.27,2011 Add new model E19AA2NBWNH82N
A00 Jul.09,2010 Initial Release E22AM2NBWNH6NS
A01 May.9,2011
Add new power board
715G4313P02000003S
Update are as below:
Repair Flow Chart
PCB Layout
Wiring Diagram
Schematic Diagram
E22AA2NBWNH82N
A00 Jul.09,2010 Initial Release E24AM2NBWNH6NS
A01 May.9,2011
Add new power board
715G4313P02000003S
Update are as below:
Repair Flow Chart
PCB Layout
Wiring Diagram
Schematic Diagram
E24A62NRWNH8NN
E24A62NBWNH82N
A02 Aug.26,2011 Add new model
E22AA2NBWNH8NN
E24A62NBWNH8NN
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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
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Hotel Mode(Option)
Starting and Existing◎
1. Starting the Hotel Menu
Press the “menu” key and the number key “XXXXXX” to enter hotel mode.
“XXXXXX” is the password request by Customer (6 numbers).
************ HAIER password is Menu + 100108 *************
2. Starting the hotel mode
If you want to turn on the hotel mode, please press the“>”key or the“<”key on the remote control to set the hotel
mode on！
3. Exiting “Hotel Menu”
Select the “EXECUTE”item in Hotel Menu to execute and exit the hotel menu. If both of the remote control and touch
key pad button are locked, please press “Menu” key on the TV for 5 seconds to unlock.
Setting items◎
1) Power ON fixed [POWER ON FIXED]
Option “VARIABLE”,“FIXED_ALL”,“FIXED_BODYKEY”or“RC RESPOND”
Default “VARIABLE”
Function
・“VARIABLE”is enable the “POWER” key on the touch keypad and the
remote control.
・“FIXED_ALL”is disable the “POWER” key on the touch keypad and the
remote control when you want to use keypad to power off.
・“FIXED_BODYKEY”is only disable the “POWER” key on the touch
keypad when you want to use keypad to power off.
・“RC RESPOND”is same as the “VARIABLE”.
Remarks
2) Volume maximum level [MAXIMUM VOLUME]
Option 0~60
Default VARIABLE
Function The volume cannot be increased more than the value which you set.
Remarks
・If you set a maximum volume value, the volume bar will not display
when you press the VOL +/- key on the remote control until the value
reach the maximum value.
・The volume of the headphones or monitor output is limited.
・This item will be disabled when the “VOLUME FIXED” item is set to
FIXED.
3) Volume fixed [VOLUME FIXED]
Option “VARIABLE”,“FIXED”,“ACCTRL”or“AC/RCCTRL”
Default “VARIABLE”
Function
・VARIABLE：The volume is not fixed.
・FIXED：The volume is fixed to the value which you set.
・AC CTRL：In the case of AC ON only, the TV starts at the volume
specified in the volume fixed level.
・AC/RC CTRL：The TV starts at the volume specified in the volume
fixed level.
Disabled
key
VOL +/- and mute key will be disabled when set the “VOLUME FIXED”
item to FIXED state.
Remarks ・“FIXED”, the volume bar OSD will not display.
4) Volume fixed level [VOLUME FIXED LEVEL]
Option 0~60
Default 0
Function The volume value will fixed to the value which you set.
Remarks ・If the [VOLUME FIXED] item is “VARIABLE”state , this item will be disabled.
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5) Remote control operation [RC BUTTON]
Option “RESPOND”,“NORESPOND”or“LIMITED”
Default RESPOND
Function
・RESPOND：The remote control is enabled.
・NO RESPOND：The remote control is disabled. The POWER key is also
disabled.
・LIMITED：only (POWER, VOLUME ( / ), CHANNEL ( / ) , ATV,DTV∧∨ ∧∨ ）
key is enabled.
Remarks
6) Touch keypad Operation [PANEL BUTTON]
Option “RESPOND”or“NORESPOND”
Default RESPOND
Function RESPOND：The touch keypad is enabled.
NO RESPOND：The touch keypad is disable except the POWER key
Remarks
7) Menu operation [MENU BUTTON]
Option “RESPOND”or“NORESPOND”
Default RESPOND
Function RESPOND：The “MENU” key is enabled.
NO RESPOND：The “MENU” key is disabled.
Remarks
8) OSD display [ON SCREEN DISPLAY]
Option “YES”,“NO”or“LIMITED”
Default YES
Function
・“YES”, all of the OSD will display.
・“NO”, all of the OSD will not display.
・“LIMITED”, only a little of OSD will display.
Disabled
key
・“NO”：（aspect、Sleep Timer、Menu、EPG、Freeze）OSD will be disable
to display.
・“LIMITED”：only the (POWER, VOLUME ( /∧∨), CHANNEL
( / ) ,Mute, ATV,DTV∧∨ ，Text）OSD are enabled to display.
(In Text、text, subtitle, subpage, Reveal hidden Teletext, Top/Bottom/Full,
hold、Mute、color is also enable.)
Remarks
9) Start mode [INPUT MODE START]
Option “NORMAL” or “Input source”
Default NORMAL
Function Select the input source when power on.
Remarks
For Example:
“TVA(2)”,“TVD(002TV)”, “AV”, “YPBPR”, “SCART2”, “PC”, “HDMI1”,
“HDMI2”, “HDMI3”, “YPBPR”
TV channel will auto detect the current channel as the input power on source.
If you want to power on at DTV channel 001, you must change the channel to
001 first, then enter hotel mode and set the “INPUT MODE START “item to
TVD (1TV).
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