Trouble Diagnosis - Hitachi DZ-GX5020A K Service Manual

Troubleshooting > Trouble Diagnosis

4-5 Trouble Diagnosis

Information:
1) Use the DZ-ACS3 AC adapter/charger to power the DVD video camera/recorder for trouble
diagnosis.
2) The trouble diagnosis fl owchart was prepared presupposing that the circuit boards have been
normally attached and connected. Therefore, make sure beforehand that the circuit boards are
correctly connected, that connectors and cables are not damaged, and that the status of their
connections is correct.
Cautions
Never look into the objective lens of optical pickup block in disc drive unit, and take great care that the
refl ected laser beam does not strike your eye: Doing so could cause serious vision damage.
The following shows troubleshooting for the symptoms shown below:
Power supply system
•Power does not turn on.
Disc system
•Recognition of DVD does not start even if a normal DVD is loaded.
•Message "NO DISC" appears even if a normal DVD is loaded.
•Message "DISC ACCESS" does not disappear even if a normal DVD is loaded.
•Message "Write protected. Check disc" appears even if a DVD with no write-protect is loaded.
•Message "Disc is not formatted. Format the disc now?" appears even if a formatted DVD is loaded.
Video signal system
•No image appears on LCD monitor.
•No image appears in viewfi nder.
•No video signal from AV output jack.
•Camera recorded image is abnormal.
•Block noise occurs during recording of video.
Audio signal system
•No audio from AV output jack.
•No sound from speaker during playback of video.
•No audio can be recorded from microphone.
Operation system/Miscellaneous
•DISC EJECT button does not operate.
•PHOTO button (focus lock) does not function.
•Operation buttons on L case do not function.
•REC button does not operate.
•Zoom lever does not operate.
•Autofocus does not operate.
•Date or time is not set.
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