Hitachi LP-EU5002 User Manual page 103

Phenomena that may be easy to be mistaken for machine defects (continued)
Phenomenon Cases not involving a machine defect
The signal cables are not correctly connected.
The MUTE function is working.
The volume is adjusted to an extremely low level.
The AUDIO SOURCE/SPEAKER setting is not correct.
The Sound checkbox is unchecked.
VOLUME + -
LAN
Troubleshooting
Reference
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