AVX-505
7.2.2 TROUBLESHOOTING FOR LCD 5.5 MONITOR
Check the system
power and correct.
Correct the
dimmer voltage.
Replace F1.
A1
Insert CN4 completely.
58
Power does not turn ON.
Check the
NO
voltage of CN1-
2,3,8,9,PWRFL and PWRVI. Is
the voltage 9.5 1.0 V?
YES
NO
Check CN1-1 DIMM voltage.
YES
NO
Check if the power is
supplied to F1.
YES
Put probe of
NO
oscilloscope near the yellow
tape of T1.
YES
High voltage !
NO
Is CN4 completely inserted?
YES
Replace back light.
NO : Abnormal
YES : Normal
Check the waveform
(waveform 1).
Be careful for high voltage!
Be sure to turn the power OFF,
then check.