4-2. How to Check Fault Symptom
No Picture
Diagnostics
Power cord on.
Yes
Check ‘Stand-By 19V’
19V appear at BD210?
0V to A19V (CN202 #1)
No
Cause : There did not supply the
power from Adaptor.
Measure : Change Adaptor.
Yes
Set On.
Yes
Check ‘SW_POWER’ more than 3.3V
appear at C274
0V to 3.3V↑ (C274)
No
Cause : Main IC(NT14M) did not
control the SW_Power.
Measure : Change the
ASSY PCB MAIN.
Yes
Check ‘Power of CORE IC(B1.15V)’
appear at BD301.
Check ‘Power of DDR IC(B1.5V)’ appear
at BD1120
No
Cause : There is problem at IC301/
IC203.
Measure : Change the
ASSY PCB MAIN.
Yes
Check ‘Power of LVDS (13V)’
appear at TP-PANEL_VCC?
0V to 13V (TP-PANEL_VCC)
No
Cause : There is proble at FET(Q301)
or Main IC(NT14M) did not
control the SW_PVCC.
Measure : Change the
ASSY PCB MAIN.
Yes
Change the LVDS cable ?
No
Change the Panel.