
VGA/YPbPr
no picture
Check the components
between AV port and U201
1*
Upgrade
OK
2.
AV
no picture
Check the components between
VGA/YPbPr
port and U201
1*
Replace
the bad
VGA/YPbPr
no picture
OK
Check the components between
VGA/YPbPr
port and U201
1*
Replace
the bad
Software of U202 ok?
1*
Check U201 ok?
OK
OK
1*
Replace
the bad
Replace
U201
1*
Replace
the bad
Check the peripheral
components of U201