Sharp LC-19SK25U Service Manual page 49

TROUBLESHOOTING TABLE (Continued)
<Composite video signal/S-video signal input> No video output (INPUT2)
No video output from extermal input <<INPUT-2>>
Yes
<Composite video signal input>
Is video signal fed to pin 11 of P501?
<S-video signal input>
Are Y and C signals fed to pins 13 and 14 of P501
respectively?
Yes
<Composite video signal input>
Is video signal sent to pin L3 of IC801 from P501?
<S-video signal input>
Are Y and C signals sent to pins L1 and N1 of IC801 from
P501 respectively?
Yes
Are signals from A6, A1, E1, E2, W5, W6, W7, Y6, AA6 of
IC801 normal?
Yes
Check IC9201 and peripheral circuits.
No
Select INPUT-2 and the input signal on the input switching
menu screen.
No
Check between J502 and pin 11 of IC501.
Check between J502 and pin 13 and 14 of P501.
No
Check between IC801 and P501.
No
Check IC801 and peripheral circuits.
49
LC-19SK25U/U-W
LC-19SB25U/U-W
LC-19SB15U
LC-19D45U