AOC Vibrant VL7A9DA Service Manual page 32

6 C). ADAPTER-MODULE Trouble shooting chart
The following spec & block-diagram is offer by CHI-SAM –COMPANY, for External Adapter
part number : 80AL17-1-CH ( Black), 80AL17-2-CH ( White)
AC ADAPTER CH-1205 TROUBLE SHOOTING
NO VOLTAGE O/P
CHECK BD101
AC VOLT. I/P
OK ?
CHECK BD101
DC VOLT. O/P
OK ?
CHECK U101 PIN7
12~15Vdc OK ?
CHECK U101 PIN4
FREQ. (50~70KHZ)
OK ?
CHECK Q101
PIN G & PIN D
WAVE
OK?
C
HECK D106, D107, U102, U103
YES
YES
YES
YES
OK ?
YES
NO
NO
NO
1
NO
NO
REPLACE
F101
REPLACE
BD101
CHECK
R115,D103,U10
NG ?
CHECK
C110,U101
NG ?
CHECK Q101
NG