![background image](http://html.mh-extra.com/html/haier/hl22t/hl22t_service-manual_136733051.webp)
voltage : +12V ,+12V
connector:CN6
(
P6,P7
)
12.3 Main board failure check
State:No picture
First,check cables which connect with PSB and the Lvds wire with the panel.
Second, check the output voltage of CN4
Connector: CN4.
State
:
No sound
First
,
check cables which connect with Main Board
,
then check as follows
First,check speaker anode(+) and cathode(-),confirm speaker short or not. If short ,replace speaker.
Second,check CN1 with oscillograph, confirm wave output or not.
Connector: CN1.
12.4 Pannel failure
Failure Mode
Part
Name
Description
Phenomena
Failure cause
V B/D
Vertical bar
Vertal
gray
V Dim
line
Vertical color
Block Defect :TCP cracking or cracking
Dim or L/D
:TCP Sunken
:TCP lead cracking
:ACF bonding short
:Awful environment and something electric enter into
LCD
:Mis-align between TCP and Panel
TCP
V L/D
H B/D
H Dim
H L/D
line(light or
dark forever)
Horizontal
bar
Horizontal
gary line
Horizontal
line(light or
dark forever)
:Panel failure
:TCP failure
Failure Mode
Part
Name
Description
Phenomena
Failure cause
44
Содержание HL22T
Страница 1: ...HL22T 1 ...
Страница 20: ...7 2 Back panel controls 27 ...
Страница 21: ...7 3 Setting Up Your Remote Control 28 ...
Страница 32: ...9 6 Backlight Backlight adjust the backlight 9 7 Function Burning Mode 39 ...
Страница 49: ...11 WIRING CONNECTION DIAGRAM 42 ...
Страница 55: ...Sincere Forever 48 ...