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RH1777
Service manual
No External Input Audio - LG RH1777 Service Manual
Hdd/dvd recorder
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Contents
Table of Contents
Troubleshooting
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Table of Contents
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8. NO EXTERNAL INPUT AUDIO
< AV1 >
C979, C980 :
Is there a signal?
YES
NO
CHECK Cable connec-
tions & Input signal.
YES
NO
IC901 pin 64 or
R999 (reset"H") :
YES
X901 (24.576MHz)
clock oscillated?
YES
NO
R902,R913,R997 :
R962,R978 (I2C) :
YES
NO
C901 pin 173
or R903 :
YES
When playing DISC,
no Audio output
3-11
CHECK IC1302
Reset Circuit
IC1101 DEFECT
CHECK IC901
power 3.3V & 1.8V
YES
IC901 DEFECT
< AV2 >
C976,C977 :
Is there a signal?
NO
CHECK Cable connec-
tions & Input signal.
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Chapters
Section 1 Summary
3
Section 2 Cabinet & Main Chassis
9
Section 3 Electrical
13
Section 4 Rs-01A Loader Part
63
Table of Contents
Troubleshooting
HDR PART
14
ELECTRICAL TROUBLESHOOTING GUIDE
64
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