Jensen VM9312 Instruction Manual - Page 30

VM9312 TROUBLESHOOTING Table 7: 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 Monitor does not open automatically No image Flashing image or interference appears on screen Prolonged image or improper height/width ratio display Monitor stops at incorrect position TUNER Weak station searching Cannot insert disc Cause Corrective Action Radio Fuse blown Install new fuse with correct rating Car battery fuse blown Install new fuse with correct rating Illegal operation Press the RESET button located in the bottom right corner of the front panel Battery depleted Replace battery with new one Battery installed incorrectly Remove battery and install correctly Improper audio output connection Check wiring and correct Volume set too low Increase volume level Improper "MUTE" connection Review wiring diagram and check "MUTE" connection Speakers damaged Replace speakers Heavily biased volume balance Adjust the channel balance to the center position Speaker wiring is in contact with metal part of car Insulate all speaker wiring connections Pirated disc is in use Use original copy Speaker power rating not compatible with unit Connect proper speakers Speaker is shorted Check speaker contact "MUTE" wire is grounded Check that "MUTE" connection is not grounded and that it's properly insulated Incorrect connection between ACC and positive Check wiring and correct battery wire TFT Auto Open is turned off 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 Turn TFT Auto Open on 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 key to restart monitor movement Auto antenna is not fully extended Auto antenna not properly connected LOCAL function is activated Disc already inside unit 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 26