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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
V B/D
Vertical bar
Vertal
V Dim
line
Vertical color
V L/D
line(light
TCP
dark forever)
Horizontal
H B/D
bar
Horizontal
H Dim
gary line
Horizontal
H L/D
line(light
dark forever)
Failure Mode
Part
Name
Phenomena
Block Defect :TCP cracking or cracking
Dim or L/D
gray
or
or
Description
Failure cause
:TCP Sunken
:TCP lead cracking
:ACF bonding short
:Awful environment and something electric enter into
LCD
:Mis-align between TCP and Panel
:Panel failure
:TCP failure
Phenomena
44
Failure cause
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