Section 2. Electrical Part; Troubleshooting Guide - LG HT904TA Service Manual

SECTION 2. ELECTRICAL PART

. Power Supply Circuit
Insert power cord.
Is the Digitron on correctly?
Turn power on.
Is power on?
Does initial read work?
Does it play?
Does it output
audio?
OK

TROUBLESHOOTING GUIDE

YES
YES
YES
YES
YES
YES
YES
NO
Check power plug and power
NO
Check power supply circuit.
NO
Check laser circuit.
Check focus circuit.
NO
Check tracking servo circuit.
NO
Check audio circuit.
2-
supply circuit.
Check disc.