Hitachi LC57 Service Manual page 94

2-18 TROUBLESHOOTING FLOW CHARTS
Ensure audio signal at
pin 2 and 4 of PHS1.
Ensure audio signal at
pin 1 and 7 of IJ11.
Ensure audio signal
at CJC8 and CJE6.
Ensure audio signal at
pin 7 and 8 of IJ10.
Ensure that digital signal at
pin 1, 2, 3 and 16 of IJ10.
BACK TO ADJUSTMENTS
2
NG
NG
NG
NG
IJ09 defect
SIgnal PWB defect
OK
Some of the following components defect
CJE4, RJN3, CJE9, RJN9
OK
Some of the following components defect
RJM6, RJM8, RJN5, RJN6, IJ11.
OK
Either RJM5 or RJN4 defect.
OK
OK
94
LC57
IJ10 defect