13
3. No Y/PB/PR output: Flow chart
No Y/PB/PR output
Check J19 Y
signal is correct
Check J19 connector is
Connected properly
Check J19 PB
signal is correct
Check J19 PR
signal is correct
Send back to zinwell
Firmly connect the
connector to right place
Check R391 has
proper signal
Check R390 has
proper signal
Check R392 has
proper signal
Check L6(3.3v)
have right voltage
Send back to zinwell
Send back to zinwell
Send back to zinwell
Send back to zinwell
Send back to zinwell
Check U11 have
right voltage
Replace U11
No
No
No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
