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TROUBLESHOOTING
Problem
GENERAL
Unit will not power on
Remote control does not function
No/low audio output
Poor sound quality or distortion
Tel-Mute malfunction
Unit resets itself when engine is off
TFT MONITOR
No image
Flashing image or interference appears on screen
Prolonged image or improper height/width ratio dis-
play
Monitor stops at incorrect position
TUNER
Weak station searching
DISC
Cannot insert disc
All manuals and user guides at all-guides.com
Table 6: Troubleshooting
Cause
Radio Fuse blown
Car battery fuse blown
Illegal operation
Battery depleted
Battery installed incorrectly
Improper audio output connection
Volume set too low
Improper "MUTE" connection
Speakers damaged
Heavily biased volume balance
Speaker wiring is in contact with metal part of car
Pirated disc is in use
Speaker power rating not compatible with unit
Speaker is shorted
"MUTE" wire is grounded
Incorrect connection between ACC and positive battery
wire
Incorrect connection to parking brake wire
PRK SW is activated and parking brake is not engaged
DVD is not compatible with current TV system settings
Improper video signal connections
Improper aspect ratio setup
Moving path is blocked
Auto antenna is not fully extended
Auto antenna not properly connected
LOCAL function is activated
Disc already inside unit
Install new fuse with correct rating
Install new fuse with correct rating
Press the RESET button located in the bottom right corner of the front panel
Replace battery with new one
Remove battery and install correctly
Check wiring and correct
Increase volume level
Review wiring diagram and check "MUTE" connection
Replace speakers
Adjust the channel balance to the center position
Insulate all speaker wiring connections
Use original copy
Connect proper speakers
Check speaker contact
Check that "MUTE" connection is not grounded and that it's properly insulated
Check wiring and correct
Check wiring and correct
Stop vehicle in safe place and apply parking brake
Change setup to accommodate disc
Check wiring and correct
Use correct aspect ratio setting
Press OPEN button to restart monitor movement
Connect the auto antenna control cable properly
Connect the auto antenna control cable properly
Turn LOCAL function off
Eject current disc and insert new one
19
Corrective Action
VM9223
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