LG LSS-3200A Service Manual page 26

(A)
YES
Start
YES
The IC960 power pins are 24V ? .
YES
IC360(6) is high?
YES
On the signal strength of menu Select
sat A, and odd transponder. IC360(4)
is 13~ 14V?
YES
On the signal strength of menu Select
sat A, and even transponder. IC960(5)
is 18~ 19V?
YES
On the signal strength of menu Select
sat B, and even or odd transponder.
The tone siganl acts properly in the
IC360(4)? Fig. 01
YES
End
NO
Check the power line referring the
circuit diagram.
NO
Check the connection on board.
NO
Check connection on the board, and
check IC360(5)(LOW).
NO
Check IC360(5) (HIGH).
NO
3-17
Check TU360(12).
Fig. 02