Electrical Troubleshooting Guide; System Check - LG BD390 Service Manual

ELECTRICAL TROUBLESHOOTING GUIDE

2. SYSTEM CHECK

System Check.
Load tray without inserting disc.
Does tray
operate normally?
Does Pick-up move to
Inside or outside?
Does Pick-up lens move
up/down?
Does laser turn on?
Does BD/DVD-ROM
disc play rightly?
YES
YES
YES
YES
YES
YES
OK
NO
Go to "Tray operating is abnormal"
NO
Go to "Sled operating is abnormal"
NO
Go to "Focus actuator operating is abnormal"
NO
Go to "Laser operating is abnormal"
NO
• Replace the traverse assembly. (Pick-up)
• Check the new firmware version .
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