Hitachi LC57 Service Manual page 93

2-18 TROUBLESHOOTING FLOW CHARTS
(2) No HDMI analog audio
Ensure power at pin 19 and 20
of PHS2, and pin 1 of PHS1.
Ensure audio signal at
pin 6 and 8 of PHS1.
Ensure audio signal at
pin 1 and 7 of IJ06.
Ensure audio signal
Ensure audio signal at
pin 7 and 8 of IJ05.
Ensure that digital signal at
pin 1, 2, 3 and 16 of IJ05.
BACK TO ADJUSTMENTS
Start
OK
HDMI 1?
YES
NG
NG
at CJ50 and CJ57.
NG
NG
NG
IJ03 defect
SIgnal PWB or Signal Power PWB defect
NG
2
NO
OK
Some of the following components defect
CJ55, RJ82, CJ60, RJ88.
OK
Some of the following components defect
RJ76, RJ78, RJ84, RJ85, IJ06.
OK
Either RJ75 or RJ83 defect.
OK
OK
93
SIgnal PWB defect
IJ05 defect
LC57