Acer AL1602W Panduan Servis - Halaman 33
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Halaman Cetak6. No Backlight
Check the input voltage of 12V
NG
OK
Check adapter and F801
Check ON/OFF signal
NG
OK
Check Interface board or main board
Check IC801 PIN12=12V
NG
OK
Change on/off circuit
Check IC801 PIN5 have triangle wave
NG
Change IC801
OK
Check IC801 PIN9/PIN10 PWM wave
NG
OK
Check IC801
Check Q802 Drain wave
NG
Change Q802
OK
Check the output of T801, T802
NG
OK
Change T801
Check connecter & lamp, feedback and protect circuit
33