Proview 770 - Page 18

NO
YES
NO
YES
YES
YES
YES
NO
NO
YES
Step 2
Check the main
board
12V
?
+5.0 V ?
Check
U10,U11,TR1
H/V input
Signal ?
Check the main
board
U7
/
Pin 5
?
Change
U9
Check
H/V Signal
Display ?
Nice Job !
Change
Signal Cable
Check
F1,D5
Check
U7