Hitachi 42HDX62/DW1-U Service Manual page 74

TROUBLESHOOTING FLOWCHARTS
(2) No HDMI analog and/or digital audio
Ensure power at pin 1 of IK03.
Ensure power at pin 4
of IK03, IK06, IK07 and IK08.
Ensure audio signal at
pin 93 and 95 of PSM.
Ensure digital signal at
pin 84, 85, 86 and 88 of IK02.
Start
OK
OK
NG
NG
IK02 defect
Digital Module, SIgnal PWB or
Signal Power PWB defect
NG
Digital Module (HDMI) defect
NG
SIgnal PWB defect
OK
I102, IF04 or IV04 defect
OK
74
DW1U