Audiovox VOH681 User manual

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Manual
VOH681/VOH681P

Important Notice
It is unlawful in most jurisdictions for a person to
drive a motor vehicle which is equipped with a
television viewer or 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,tothe driver whileoperating the vehicle.
In the interest of safety, the VOH681/VOH681P
should never be installed where it will be visible,
directly or indirectly, by the operator of the motor
vehicle.
Please note that the state of Rhode Island forbids
theinstallation of sucha device ina motor vehicle.
Safety Precaution
For safety reasons, when changing video tapes it is
recommended that the vehicle is not in motion, and
that you do not allow children to unfasten seatbelts
to change tapes or make any adjustments to the
system. System adjustments can be accomplished
using the remote control unit, while seatbelts remain
fastened. Enjoyyour Audiovoxentertainment system
but remember-safety of all passengers remains the
number one priority.

Congratulations on your purchase of the Audiovox
VOH681/VOH681P drop-down Video Monitor. The
VOH681/VOH681P has been designed to give you
and your family many years of video entertainment in
the mobile environment. Please read the directions
that follow to familiarize yourself with the product and
to ensure that you obtain the best results from your
equipment.
Please note: Installation options vary, see the
individual owner’s manuals for each component in
your system to obtain a full understanding of each
component’s operation.
Features
♦6.8” TFT (Thin Film Transistor) Active
Matrix LCD (Liquid Crystal Display)
Monitor
♦IR transmitter for Wireless Headphones
♦Remote Sensor Eye
♦Three Audio/Video Inputs
♦Headphone Amplifier
♦Two Headphone Jacks for Wired
Headphones
♦Built-in Dome Lights
♦Backlit Controls for Low Light Operation
♦Push button screen Brightness Controls

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Front Panel
1. Infrared Transmitter - Used to transmit audio
to wireless headphones
2. Power button – (Bright red when system is On,
dim when Off)
3. Volume Up/Down – Controls volume to
headphone jacks and external speakers if
connected
4. Source Select – used to select one of the three
A/V sources.
5. Source indicator LEDs - Indicate the current
video source
6. Sensor Eye – Receives signals from infrared
remote controls and relays them to remote
mounted equipment.
7. Three position Dome Light Switch
•Auto – Automatically switches on the dome
lightsin conjunctionwith thevehicle’sinterior
illumination
•Off – The Dome lights will not turn on in this
position
•On – Turns on the Dome lights.
8. Dome lights – provide additional illumination
9. Screen Release – Slide in direction of arrow to
release the flip down screen
10. Headphone Jacks – allows plug-in of two wired
headphones with 1/8” stereo jack.
11. Auxiliary A/V Stereo Input – allows plug-in of
camcorder, game, portable DVD player or other
A/V source with RCA type output connectors.
12. Brightness Up/Down Control - use the
brightness up/down buttons to adjust the picture
brighter or darker.
Turning the VOH681/VOH681P On or Off
1 Sliding the screen release lock forward will unlock
theLCD screenand itwill dropdown slightly. Pivot
the screen downward until a comfortable viewing
angle is reached. The internal friction detent will
hold the screen in position while the system is in
use.
2 Pressing the power button on the pod will turn the
system on oroffalternately. Wheninusethe internal
backlighting will illuminate the controls.
3 After the unit has been turned on and is displaying
a picture, adjust the viewing angle and brightness
controls to optimize the picture quality.
4 Remember to turn the unit off and pivot the LCD
to the locked position when not in use.

Operation
Overhead Dome Lights
The lights integrated into the VOH681/VOH681P are
controlled by a three position slide switch. Sliding
the switch to the on position will turn the lights on.
The off position will prevent the lights from turning
on at all times, and the auto position will allow the
lights to turn on and off with the vehicle’s interior
lighting. Do not leave the vehicle unattended with
the dome light switch in the on position, as this could
result in a discharged battery
Remote Sensor
The VOH681/VOH681P incorporates an infrared
sensorwhich relays signalsfrom any infraredremote
control to allow a remote mounted device to be
controlled simply by pointing its remote control at the
remote sensor eye mounted on the pod. This
providescontrol ofauxiliary equipmentsuch as Video
Cassette and DVD players. The infrared sensor can
relaysignals from anymanufacturer’sremote control
to its respective component connected to the AV1 or
AV2 inputs.
Dome
Light
Switch Remote
Sensor eye

External Auxiliary A/V Stereo inputs (Aux )
These inputs are provided to facilitate the temporary
connection of optional audio / video equipment, such
as a camcorder or video game system. They can be
accessed by removing their protective plastic cover
located behind the LCD hinge. To play a source with
theseinputs,use RCApatchcord toconnectthe audio
/ video signals to their respective jacks. Mono audio
sources will require the use of an RCA Y cable
(PN 0892165) toconnect toboth rightand leftinputs.
Once the connections have been made, turn the
VOH681/VOH681Pon and pressthe sourceselector
button on the pod until the “AUX” indicator LED
illuminates. Theunit willnow playtheaudio andvideo
signals from the accessory connected.
Optional Accessories
Wired Headphones
Thereare two 1/8”headphone jacks onthe VOH681/
VOH681P that can be used with any standard stereo
headphones. These jacks are controlled by the
volumeup / downbuttons on theVOH681/VOH681P
or the remote control. Remove and save the
protective plastic cover to access the jacks.
Remember to replace the cover when the jacks are
not in use
Wireless Headphones
The VOH681/VOH681P includes a built in infrared
transmitter for use with Audiovox wireless
headphones(PN MVSWHS). Turning theheadphone
switch on, and wearing them activates the internal
microswitch whichwillactivate theinternalIR receiver
and the volume can then be adjusted separately with
thecontrols oneachheadset. Any numberofwireless
headphones can be used, but all must be within a
line of sight from the transmitter, as infrared
transmissions,like visible light travel onlyin astraight
line. See the documentation accompanying your
Audiovox wireless headphones.
External
Auxiliary A/
V Stereo
inputs Infrared
Transmitter

Wired FM Modulator
Your video system may be equipped with an RF
modulator, that allows you to listen to the VOH681/
VOH681P’saudiosignal bytuningyour vehicle’sradio
to the selected frequency, (88.7 or 89.1 - Check with
your installer) and turning on the remote mounted
RF modulator switch. (In most cases this toggle
switch will be located underneath the driver’s side of
the dash, check with your installer for the exact
location.) Whenever the RF modulator is on,
broadcast radio reception will be poor. Turning the
remote mounted toggle switch off will allow normal
radio reception.
Video Output
The VOH681/VOH681P provides a video output for
an optional video monitor(s). (Refer to page 7 of the
installation guide for more details.) This output will
provide a video signal that duplicates the signal
displayedby the VOH681/VOH681P toan additional
monitor or video display. Please see your installer
for more information.
Audiovox Video Cassette Player (AV1)
In most installations a VCP will be connected to the
“AV1” input. To view a video cassette, turn the
VOH681/VOH681P On and press the source button
on its control pad until the “AV1” indicator LED
illuminates. The VCP may also be operated with a
remote or the buttons on its face. The VOH681/
VOH681P is now ready to play the audio and video
signals from the VCP if it is connected to the “AV1”
input. Insertinga tape intothe VCP willautomatically
turn it on and activate the play mode. If a rewound
tape had already been loaded into the VCP, prior to
itsactivation, press playon the VCP or on the remote
control to view the tape. For more information see
the operator’s manual accompanying your VCP.

Warnings
vDo not use any solvents or cleaning materials
when cleaning the video system.
vDo not use any abrasive cleaners, they may
scratch the screen. Use only a lightly dampened
lintfree clothto wipethe screenif itbecomes dirty.
vLock the LCD screen in the fully closed position
when not in use.
vBefore putting on headphones always adjust the
volume setting to the lowest position.
vRemember to leave the dome light switch in the
off or auto positions when the vehicle is
unattended,as thedomelights, ifleft on,candrain
the vehicle’s battery.
vDo not put pressure on the LCD screen.
vCaution children to avoid touching or scratching
the screen, as it may become dirty or damaged.
AV2
The second video input may be connected to a DVD
player, video game system, or other audio / video
input. To play the AV2 source, turn the VOH681/
VOH681Pon and pressthe source buttonon the pod
until the “AV2” indicator LED illuminates. Turn the
sourcecomponent on withits powerbutton or remote
control.The VOH681/VOH681P is nowready toplay
the audio and video signals from the source
connected to AV2 inputs.

Specifications
•Check the condition of the
vehicle’s radio antenna.
•Verify that the antenna is fully
raised.
•If a wired RF modulator has
been installed, verify that its
switch is turned to the off
position.
•Verify that the batteries in the
suspect remote are fresh.
•Verify that the remote repeater
eye is not obstructed.
•Verify that the infrared
transmitter is affixed over the
sensor eye of the component
to be controlled
Troubleshooting
Poor radio
reception (FM
modulator
installed)
LCD Backlighting Edge Light Tube
Resolution 1152 x 234
Pixels 269,568
Operation Temperature 0 - 40º C
Storage Temperature -20 - 80º C
Expected Backlight Life 10,000 Hours
Video Display System
VOH681 NTSC
VOH681P PAL BG/I
Audio Output 0.1W @ 16 Ω
IR sensor
inoperative
Replacement Parts
Protective Plastic Cover 1023336
Optional Audiovox VCP Remote Control 0993000
PROBLEM SOLUTION
© Copyright 2000 Audiovox Corp., 150 Marcus Blvd., Hauppauge, NY 11788 128-5623B