Optical - LG LAS855M Service Manual

ELECTRICAL TROUBLESHOOTING GUIDE

5. OPTICAL

'Optical' should be displayed, when optical cable is connected well.
L203 should be 3.4 VA.
OPT_SPDIF signal
should be shown (R207).
Check MPEG (IC501).
Check AMP.
YES
YES
Even though all of above things are OK, there is no sound.
NO
NO
Check optical cable.
2-26
Check power.