No Dv (Ieee1394) Input (Video/Audio) Signal - LG RHT497H Service Manual

12. NO DV (IEEE1394) INPUT (VIDEO/AUDIO) SIGNAL

check dv_Jack connection
yeS
dv-mode
switching?
yeS
ic1301
power 3.3v
yeS
ic1301 Pin37:
"high" & x1301 (24.576Mhz)
oscillated?
yeS
ic1301 Pin15 : "high"
is there a signal?
yeS
ic1301
Pin1,27,28,29,30 :
is there a signal?
yeS
ic1301 Pin2, 3 :
is there a signal?
no
ic1101 defect
no
no
no
no
.
no
yeS
3-16
change to dv-mode
using remote control
check power 3.3v
check r1143 reset from ic1101
check dv cable
replace ic1401