System Circuit - LG DR-7400 Service Manual

2. SYSTEM CIRCUIT

LG logo not displayed at
POWER ON
NO
IC501(238.237):27M?
Check X501
(OSC_IN)
YES
NO
IC501(198):
Check IC501 and other
CVBS_out?
Circuits
YES
Check IC709(8, 29) EUI_V_OUT
DRIVE not recognized
NO
Check DRIVE power
Check SMPS
5V, 12V
YES
Check ATAPI interface connector
CN304
3-5