No Dv( Ieee 1394 ) Input (Video/Audio) Signal - LG RH4820W Service Manual

15. No DV( IEEE 1394 ) input (video/audio) signal

CheckDV_JACK and
CABLE connection
YES
IC401 - 42,43,44,45
Check signal input
YES
IC401 - 78:HIGH?
( /RST_PHY )
YES
Check IC401 - 2 Clock ?
BIO_PHY_CLK
YES
IC401 => IC101 Check
BIO_PHY_DATA/CLK signal
YES
< When Playing DISC ,No COMPONENT, COMPOSIT/S-VIDEO
signal > check
NO
Check IC309-12 signal
NO
Check X402 Clock
24.576 MHz
NO
Check IC401 power and
oter circuits
3-14