Audiovox MM850 User's Manual
Contents
1. computer a a cai enza Negative Switched Dome lighting j Red black Lamp on To 3 pin Black red Lamp common connector Violet brown Lamp Auto To constant TFactory Dome light circuit _ i ae AD E hs RS KR 27 tant IG z cons a Gia a Troubleshooting SYMPTOM REMEDY No power at Video Monitor Verify 12 VDC on Red wire at 2 pin Power Harness behind video monitor Verify ground connection with continuity test from known good ground to black wire at 2 pin Power Harness Power but no video or Verify that the correct source is selected i e 1 or 2 Verify that the sound source is on and playing a known good media such as a videotape Verify connections at both ends of the source component harness Verify that the headphones are turned on check headphone batter Picture but no sound ies Verify that power is available to the FM Modulator make sure modu lator is tuned to the correct FM station 10 11 Copyright 2004 AEC 150 Marcus Blvd Hauppauge NY 11788 128 72652. or covered with a material that matches the headliner before assem bling the trim ring to the video monitor The finished trim ring should be attached to the video monitor then attach the assembly to the roof X Om si RE M A ia j U A J Headliner Cut line Lowest point mark Tape marker to screwdriver Starting at your mark for the lowest point trace the contour of the roof MOUNTING THE TRIM RING Roof Support lo Headliner 5 x9 x3 4 Plywood Block 4 8x1 self drilling Screws _ Video Unit 4 8 flat washers 4 8x3 4 self tapping screws MM850 IR LED Clean the Window o Remove A Dome Light 000 item 6 Video Output ee O gt B Audio Output forFM Mod B Accessory Harness item 7 Red RCA Audio Right White RCA Audio Left o RCA Video l 00000 m x o WT Red 12VDC Accessory Ckt Fy L Install 5A T Inline Fuse Ke Power Hamess t tem 5 Black Ground I Power Connector 4 Pin NY emu VY R Receiver Window on t
3. BY AUDIOVOX MMSEC 8 5 LCD OVERHEAD MONITOR Installation Guide Important Notice An LCD panel and or video monitor may be installed in a motor vehicle and visible to the driver if the LCD panel or video monitor is used for vehicle information system control rear or side observation or navigation If the LCD panel or video monitor is used for television reception video or DVD play the LCD panel or video monitor must be installed so that these features will only function when the vehicle is in park or when the vehicle s parking brake is applied An LCD panel or video monitor used for television reception video or DVD play that operates when the vehicle is in gear or when the parking brake is not applied must be installed to the rear of the driver s seat where it will not be visible directly or indirectly to the operator of the motor vehicle It is unlawful in most jurisdictions for a person to drive a motor vehicle which is equipped with a screen that is located in the motor vehicle at any point forward of the back of the driver s seat or that is visible directly or indirectly to the driver while operating the vehicle In the interest of safety the MM850 should never be installed where it will be visible directly or indirectly by the operator of the motor vehicle Licensed under one or more of the following patents Patent NOS 5 775 762 and 5 927 784 MATERIALS INCLUDED IN THIS PACKAGE MM850 Video Mo
4. The trim ring is attached to the video monitor using the perimeter screw bosses It is important that the screws used in this installation are not overtightened and that the video monitor and trim ring are mounted in such a way that the assembly does not distort or bend when the mounting screws are tight ened An alternate method is to use a piece of plywood 5 x9 x3 4 First secure the plywood block to the cross member then screw the monitor into the plywood See the drawing on page 7 It is best to mount the video monitor to the roof structure without the trim ring first There should be a gap between the headliner and the outer flange of the video monitor The trim ring should be cut to full this gap Apply masking tape to the outer surface of the trim ring in the areas where the cut will be made Mark the cut to follow the necessary contour of the roof The suggested method of marking is as follows A First mark the narrowest point of the trim ring on the masking tape Be careful to consider not only left right location but fore aft location B Using the handle of a screwdriver make a transfer marking tool See diagram below Place the tool against the roof and the marker against the masking tape on the mini console Trace the cut to be made around the entire perimeter of the trim ring C Cut the trim ring using a Dremel Tool D Check the fit of the trim ring and make any minor adjustments necessary The trim ring can be painted
5. d at the ignition switch or fuse box The mounting method and location will vary from vehicle to vehicle so this manual will only focus on the installation of the video monitor and related console accessories Generally the best location for the video monitor is where the vehicle s factory dome light is installed The monitor should be located in such a manner that it can be comfortably viewed by rear seat passengers NEVER INSTALL THE MONITOR IN A PLACE WITHIN THE DRIVER S VIEW THIS IS NOT ONLY DANGEROUS BUT IT IS ALSO ILLEGAL Once the mounting location of the monitor has been determined there may be additional preparation work necessary depending on the vehicle structure and installation method Some of the steps that may be required are A Removal of the vehicle s dome light B The headliner may need to be trimmed TRIM RING INSTALLATION This page only covers special installation considerations for the trim ring installation If the video monitor is to be installed in a vehicle with the trim ring it may need to be trimmed to fit the contour of the vehicle headliner 1 In this installation the video monitor is mounted directly to the overhead cross member in the roof using the mounting screw bosses These screw bosses should contact the cross member di rectly i e no gap between the screw boss and the roof structure Also be sure that the screws do not pierce the outer roof skin when fully fastened to the cross member
6. ecessary to gain access to vehicle s wiring as well as all areas where interconnecting wire harnesses will need to be located If any access holes need to be cut into the vehicle headliner other trim components etc this should be done now as well Route the wiring harnesses throughout the vehicle as necessary Refer to the Wiring Diagrams in this manual as well as the wiring instructions for the individual components and accessory options being installed Be sure that all wiring is protected from sharp edges and is routed in such a manner that it will not be pinched when all components and interior trim are fully installed Be sure to leave enough slack in the wiring at each component to allow working room Remove all A V system components from their packaging and place them loosely in the vehicle at their respective locations Connect all components together electrically and verify proper operation of all system functions Note This is best done BEFORE components have been permanently mounted After verifying proper operation of the system proceed to mount each of the components When all components are mounted recheck function of entire system again to ensure that no wiring was pinched or connected improperly during final installation VEHICLE PREPARATION 1 Locate an accessory power source 12v when keyis in the ACC and run positions and Ov when key is off Also locate a good ground wire Generally these wires can be foun
7. h all the doors closed and the lights out both wires at the dome light will rest at 12vdc When the light is activated one of these wires will switch to ground This is the switching wire For positive systems connect the violet brown Lamp auto wire to the vehicle s switched wire Then connect the red black lamp on wire to a fused constant 12 volt source and the black red lamp common wire to a good ground Positive systems are commonly found on Ford vehicles For negative systems connect the violet brown Lamp auto wire to the vehicle s switched wire Then connect the red black lamp on wire to a good ground and the black red lamp common wire to fused constant 12 volt source Negative systems are commonly found on General Motors and import vehicles Note Some vehicles which incorporate transistorized control of the dome light circuit such as the 1999 Dodge Caravan may require that the violet brown Lamp auto wire be connected to the door pin switch wire as the additional current draw of the Monitor s lights may not be supported by the output of the vehicles body control computer Positive Switched Dome lighting To To 3 pin Red black Lamp on BAR Black red Lamp common constant Violet brown Lamp Auto 12vdc _on Monitor ET circuit I To constant re _ 12vdc 5 Factory Door ajar 3 switch or Body Control
8. he front of the VCP for use with dhesive Backing and Apply IR LED to IR Non Stereo n the Face of the VCP Installations Insert the Circular Mini Din Connector of the source Component Harness through the wire tie loop on the main PCB and into the Mini Din Connector on the main PCB Pull the wire tie loop tight and cut off the excess Connect the Power Harness to the mating connector on the Video Monitor Connect the power harness to the vehicle s electrical system through an In Line 5 Ampere fuse by tapping into an accessory hot line Verify all functions of the System before final mounting of the finished assembly CONNECTING THE DOME LIGHTS The dome lights in the video monitor require three connections to the vehicle s wiring There are two common types of dome light circuits used positive or negative switched Positive systems supply volt age to the interior lights to turn them on negative switched systems apply ground to illuminate the bulbs To determine which system you have you must locate the wires at the dome light On a positive switched system with all the doors closed and the lights out both wires at the dome light will rest at ground When the light is activated one of these wires will switch to 12 vdc This is the vehicle s switching wire On a negative switched system wit
9. nitor P N 136 3869 1pc 2 Trim Ring P N 102C4007 1pc 3 Remote Control P N 136B3650 1pc 4 Hardware Package 4 x 5 16 Screws 7 pcs 8 x 5 8 Self Drilling Screws 4 pcs 8 Washers 4 pcs 5 2 Pin Power Wire Harness with choke P N 112B3143 1 pc 6 Dome light Harness P N 112B3110 1 pc 7 Accessory Harness P N 8010730 1pc 8 A V Adapter Cable P N 112B3227 1pc TOOLS REQUIRED 2 Phillips Screwdriver 1 Phillips Screwdriver Utility or Razor Knife or Shears Wire Strippers Upholstery hook tool for removal of panels as necessary Electrical Tape Masking Tape Multimeter to verify 12 volt DC and continuity Do not use a test light or logic probe Marker pen to mark headliner Scribe to mark trim ring if used Misc electrical connectors to connect to vehicle power source Requirements will vary from vehicle to vehicle GENERAL INSTALLATION APPROACH Decide upon system configuration and options that will be installed i e what components VCP Tuner RF Modulator external amp remote headphones DVD etc Review all manuals to become familiar with electrical requirements and hook ups Decide upon mounting locations of all components and method of mounting Prep the vehicle by removing any interior trim n
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