Proview 770 - TROUBLESHOOTING AND DIAGNOSTICS

G. TROUBLE SHOOTING HINTS
NO NO
YES YES
YES YES
NO NO
High Voltage !
NO
YES
YES
NO NO
YES
No Display
( Black )
LED ON
?
Push the power
ON/OFF
switch
LED Color
change ?
Check main
board U2/Pin2
Hi / Lo under
push power
sw?
Back light
ON?
To Step 2
Make sure the
connection of
Inverter is fine
+12V ?
Check the
CN1
/Pin1
of Inverter
Check
F1(Fuse) of inverter
B
Display ?
Nice Job !
A
To Step 2
Power
adapter ?
Change
adapter