Haier HLE20BB Manuale utente

SERVICE MANUAL

FOR HLE20BB

TFT-LCD TV

Haier Group

Content

CONTENTS -----------------------------------------------------------------------------------------------1

Main Unit Description----------------------------------------------------------------------------------2

Features----------------------------------------------------------------------------------------------------4

Warning and Cautions---------------------------------------------------------------------------------6

Replacement of Memory IC--------------------------------------------------------------------------8

Net Dimension-------------------------------------------------------------------------------------------9

Remote Controller Functions----------------------------------------------------------------------10

ICs function description ----------------------------------------------------------------------------13

Block Diagram------------------------------------------------------------------------------------------21

Trouble Shooting---------------------------------------------------------------------------------------26

Control Panel Function

1.TV/AV PC/COMPONENT/AV/SV/TV

2. MENU Press to select the main menu

3. VOL-(V-) Volume down / Left orientation to adjust the item in the OSD

VOL+ (V+) Volume up / Right orientation to adjust the item/Press to enter

4. CH-(P-) TV channel down / to select the item in the menu

CH+(P+) TV channel up / to select the item in the menu

5. Power supply switch

6. Power indicator

Illuminates red in standby mode, illuminates green when the display is

turned on

7.Remote Sensor

Selects the input signals:

Receives the signals from the remote control

TV/AV MENU VOL- VOL+ CH- CH+ POWER

12345

23145

2314

567

HLH15BB

HLE20BB

15HL25S/20AL25S

Main Unit Description

AV /S-VIDEO/COMPONENT Audio Input

Connect audio

output from an external

device to these jacks

D-SUB Input

Connect to the VGA

15PIN analog output

connector of the PC

display card for PC

display purpose

S-Video Input

Connect S-Video out

from an S-Video device

to the jacks.

Antenna Input

Connect cable or

antenna signals to

the TV, either direc-

tly or through your

cable box.

Connection Options

Earphone port

PC Audio Input

Connect the PC output

connector from a PC to

the audio input port

(The figure is just for referrence, please see actual unit. )

DVD/DTV Input

Connect a component

device to these jacks

ANT IN

S-VIDEO

D-SUB IN PC AUDIO IN AUDIO IN

VIDEO IN

Pb PrY

COMPONENT IN

Video Input

Connect video

output from an external

device to this jack

DC IN

DC Power Cord Socket

This TV operates on DC

power. The voltage is

indicated on the specifications

page. Never attempt to

operate the TV on ac power

Features

Model

NO.

Functions

HLE20BB

1 TFT LG

2 Screen size 20inch

3 Aspect ratio 4:3

4 Resolution 800*600

5 Brightness 450cd/m2 cd/m2

6 Contrast(Darkroom) 350:1

7 Response time(ms) 16

8 Color system NTSC

9 NO. of preset channels 100

10 Picture mode Yes

11 Angel of view H:176°/ V:176°

12 Color display 16,777,216

13 Color level 16

14 OSD languages ENGLISH,FANCE, SPAISH

15 AV stereo Yes

16 Surrounding sound No

17 Audio system M

18 Bass Yes

19 Balance Yes

20 Sound mode Yes

21 Mute Yes

22 BTSC Yes

23 AV input Yes

24 AV output NO

25 Y CB CR Yes

26 Y PB PR Yes

27 S-video jack NO

28 TV in Yes

Model

NO.

Functions

20AL25S

D-SUB jack Yes

30 DVI socket

31 SCART socket

32 Ear-Phone Out

Yes

33 CCD,V-CHIP

Yes

34 Semitransparent menu

Yes

35 ZOOM

36 16:9 mode

37 Child Lock

38 Quick View

Yes

39 NO. of built-in speakers

40 Audio output power(Built-in)(W)

2*1.5

41 Total power input（W）

42 Voltage range（V）

120

43 Power frequency（Hz）

44 Time of sleep timer(MINS)

240

45 Approval

46 Suitable market

U.S.

Warnings and Cautions

Warning

High voltages are used in the operation of this product.

Do not romove the cabinet back from your set. Refer

servicing to qualified service personnel.

Warning

To prevent fire or electrical shock hazard, Do not expose

the main unit to rain or moisture.

Warning

Do not drop or push objects into the television cabinet

slots or openings. Never spill any kind of liquid on the

television receiver.

Caution

If the television is to be built into a

compartment or similarly enclosed, the

minimum distances must be maintained.

Heat build-up can reduce the service life of

your television, and can also be dangerous.

Minimum

10c

20c

10c 5cm

Caution

Never stand on, lean on, push suddenly the product or its

stand. You should pay special attention to children to children.

Caution

Do not place the main unit on an unstable cart stand, shelf or

table. Serious injury to an individual, and damage to the

television, may result if it should fall.

Caution

When the product is not used for an extended period of time, it

is advisable to disconnect the AC power cord from the AC

outlet.

Caution

Avoid exposing the main unit to direct sunlight and other

source of the heat. Do not stand the television receiver

directly on other produces which give off heat. E. g. video

cassette players,Audio amplifiers. Do not block the

ventilation holes in the back cover. Ventilation is essential to

prevent failure of electrical component. Do not squash power

supply cord under the main unit.

Caution

The LCD panel used in this product is made of glass.

Therefore, it can break when the product is dropped or

applied with impact. Be careful not to be injured by

broken glass pieces in case the LCD panel breaks.

REPLACEMENT OF MEMORY IC

1. MEMORY IC.

This LCD TV uses memory IC. In the memory IC are memorized data for correctly operating the video and

sound circuits. When replacing memory IC, be sure to use IC written with the initial value of data.

2. PROCEDURE FOR REPLACING MEMORY IC

(1) Power off

Unplug the +12V power plug from +12V power socket.

(2) Replace IC

Be sure to use memory IC written with the initial data values or blank memory IC.

(3) Power On

Plug the +12V power plug into +12V power socket. (If memory IC is blank, the program will take 25s to

initial memory IC.

(4) Check and set SYSTEM default value:

1) Press “DISPLAY” key, then press colour key “red”,”green”,yellow”,”DISPLAY” on the Remote control

unit continuously for factory used.

2)The “Factory2” will be displayed on the screen,

3) Check the setting value of the SYSTEM default value of Table below. If the vale is different, select

items by [CH+]/[CH-] keys and set value by [VOL+]/[VOL-] keys.

4) Press “OK” key and return to the normal screen.

Remote Control Key Functions

When using the remote control, aim it towards the remote sensor on the TV

2. Power supply switch

9. MENU

To display/exit the main menu

11. CH+/CH-

TV channel up/down or select the item of the menu

12. VOL+

Volume up / to select the main menu/ to adjust the item/ to

enter the submenu.

VOL- Volume down / to select the main menu/ to adjust the item

6. 0-9 TV channel number select

3. RECALL

Quick TV channel switch(return to the last channel)

10. TV/AV Select PC/COMPONENT/AV/SV/TV

7. MTS/SAP Select MONO,STEREO, SAP in NTSC system

1. MUTE MUTE

8. P.STD Select picture mode: PERSONAL/STANDARD/MILD/FRESH

5. DISPLAY Display current input signal information

4. EXIT Menu exit

Illustration of the keys on the remote control:

MUTE

RECALL DISPLAY EXIT

123

456

789

MTS/SAP P.STD

MENU TV/AV

CH+

CH-

VOL

CCD SLEEP SCAN

910

13 14

13. CCD

Closed caption on/off

14. SCAN

Channel scan

15. SLEEP

TV sleep button

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