VOH684
For Customer Service
Visit Our W ebsite At
WWW.audiovox.com
Product Inform ation, Photos,
FAQ’s O wner’s M anuals
®
ELECTRO N ICS CO RP.
Released 11-15-01.
128-6116
1 of 18
Features
Congratulations on your purchase of the Audiovox
VOH684 drop-down TV / Video Monitor. The VOH684
has been designed to give you and your family many
years of video entertainment in a 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.
v 6.8”TFT(ThinFilmTransistor)ActiveMatrixLCD
(LiquidCrystalDisplay)Monitor(4:3 AspectRatio)
v OSD (On Screen Display) for Control of Picture
QualityandFunctions
v FullFunctionRemoteControl
v TelevisionTuner
v FM Radio
v DualChannelInfraredTransmittersforIRWireless
Headphones
Television Reception
This entertainment system is designed primarily for
viewing prerecorded movies or playing video games.
Television reception in a moving vehicle will be limited
and in some areas will not be possible due to weak
and variable signal strength. Television viewing in a
stationary vehicle will result in an improvement, but
may still be marginal due to signal strength. The
quality of the picture will not be consistent with home
TV reception. Reception may be affected by weather
and distance from TV station. A weak signal may
cause the picture to roll, be snowy, or cause some
color loss.
v TwoAudio/VideoSources(inputs)
v Headphone / Speaker Amplifier
v HeadphoneJacks(MonitorandRadio)
v Forward and Side Remote Sensor
v DomeLightswithSwitch
v BacklitControlsforLowLightOperation
v DualChannelWirelessHeadphones
-3-
128-6116
3 of 16
1
3
2
4
5
6
11
7A
8
12
13
9
10
14
15
16
17
7B
-4-
128-6116
4 of 16
Front Panel
9. Recall Button – Used to access and display the
preset radio channels in memory.
10. Memory Button – Used to store the desired
channel into memory.
1. Dual Channel Infrared Transmitter – Used to
transmit audio to wireless headphones.
TV/Video Controls
2. Power Button – Bright red when system is On,
dim when Off.
3. Channel Up/Down – Changes the TV channel.
4. Volume Up/Down – Controls volume to
headphone jack (TV EAR) and external speakers
if connected.
5. Auto Program – Used to program local channels
into the TV memory.
11. LCD Display Window – Used to display the FM
radio station frequency.
12. Search Up/Down – Used to search for the desired
FM radio station frequency.
13. Three position Dome Light Switch
• Auto – Automatically switches on the dome
lights in conjunction with the vehicle’s interior
illumination
• Off – Turns off dome lights and prevents them
from lighting when the switch is in the off
position.
6. Source Select – Used to select A/V sources (TV,
VCP, DVD or Game).
7A. Forward Sensor Eye – Allows the remote control
to operate the VOH684’s OSD (On Screen
Display), control volume to wired headphone jacks
(and optional external speakers), and to control
the Video Cassette Player and other accessories.
7B. Side Remote Sensor Eye – Allows the remote
control to operate the VOH684’s OSD (On Screen
Display), control volume to wired headphone jacks
(and optional external speakers), and to control
the Video Cassette Player and other accessories.
FM Radio Controls
• On – Turns on the dome lights.
14. Dome lights – provide additional interior vehicle
illumination.
15. Screen Release – Slides in the direction of the
arrow to release the drop down screen.
16. TV EAR Headphone Jack – Allows plug-in of wired
headphones with 1/8” stereo plug for monitoring
the video program audio.
17. RADIO EAR Headphone Jack – Allows plug-in of
wired headphones with 1/8” stereo plug for
monitoring the radio program audio.
NOTE: Audiovox recommends the use of the
Audiovox HP275 Headphones.
8. Power Button for FM Radio – Bright red when
system is On, dim when Off.
-5-
128-6116
5 of 16
REMOTE CONTROL OPERATION
7
TV POWER
MUTE
TV/VIDEO
BATTERY INSTALLATION
6
1
1
4
7
0
2
5
3
6
9
CH
CH
Before attempting to operate your Remote Control,
install the batteries as described below.
1) Turn the Remote Control face down. Press down
on the ridged area of the battery cover and slide it
off.
2) Install two “AAA” batteries as shown. Make sure
that proper polarity (+ or -) is observed.
3) Slide the cover back until it clicks.
3
4
2
8
VOL
VOL
PICTURE
SELECT
5
1--
ERASE/
WRITE
10
9
AUTO
MEMORY
SKIP/SEARCH
8
RADIO POWER
TUNING
The remote control will operate the VOH684, Audiovox
Televisions and Video Cassette Players. It is not a
universal remote control and will not control equipment
from other manufacturers
11
14
MUTE
VOLUME
12
13
17
15
16
19
RECALL
MEMORY
VCP POWER
PLAY
STOP
If a universal remote control is to be used with the
VOH684, choose the remote encoding scheme for
Audiovox Televisions when programming the remote.
REW
ꢀ. ꢀ W D REPLAY
18
20
22
21
®
-6-
128-6116
6 of 16
Remote Controlled TV and Monitor
Functions
5. PICTURE SELECT BUTTON
Each time this button is pressed, the on screen
picture adjustment display cycles through
1. POWER ON/OFF
Press this button to turn the VOH684 On. The
channel number or current video source will be
displayed on screen and the picture will appear in
a few seconds. Press the button again to turn
the VOH684 Off.
“adjustment
bars”
for
CONTRAST,
BRIGHTNESS, COLOR and TINT. Once the
desired adjustment bar is displayed, use the
VOLUME UP/DOWN buttons to adjust the setting.
The display will automatically turn off if no
adjustments are made within 6 seconds, or if any
other button is depressed.
2. DIRECT ACCESS (O-9) BUTTONS
Use these buttons to make a direct channel
selection. The channel number chosen will be
displayed on the screen for about 4 seconds. The
direct access is carried out with 0-9 keys (0-69ch).
3. CHANNEL UP/DOWN BUTTONS
Use these buttons to advance to the next higher
or lower channel. See also: SKIP / SEARCH
BUTTON.
6. MUTE BUTTON (Video Program)
Press this button to remove the sound at the
headphone jack for the video program audio only.
The screen will display the volume adjustment bar
for 6 seconds, indicating that the sound has been
turned off. Pressing the button again restores
sound to the previously set level. The mute feature
may also be released by pressing the VOLUME
UP/DOWN BUTTONS.
4. VOLUME UP/DOWN BUTTONS
Use these buttons to increase or decrease the
volume level of the headphone jack or external
speaker if installed. They are also used to make
picture adjustments in picture select mode.
Note: These buttons will not affect the volume of
wireless headphones or a wired RF modulator.
When using these devices the volume must be
adjusted with the headphone volume control or
with your radio’s volume control (see page 12,
Headphones, or page 13, Wired FM Modulator).
7. TV/VIDEO BUTTON
Any video equipment connected to the AUDIO/
VIDEO inputs can be viewed on the by pressing
this button. Each time the button is pressed, the
Audio / Video source will change in the following
sequence VIDEO 1, VIDEO 2 and TV.
-7-
128-6116
7 of 16
Remote Controlled Radio Functions
12. MUTE BUTTON (FOR FM RADIO)
Press this button to remove the sound at the
headphone station. Pressing the button again
restores sound to the previously set level.
13. RECALL BUTTON
8. AUTO MEMORY BUTTON
When the AUTO MEMORY button is pressed, all
channels in TV mode are searched and tuned; all
the channels with signals detected are
automatically stored. Please refer to page 2 for
more information on TV reception.
Press the recall button to recall channel 1 to 6
from memory. Each press of the recall button
will advance the station number. Stop pressing
the RECALL button when the desired station
preset (1-6) is displayed on the LCD.
9. SKIP/SEARCH BUTTON
This button selects between SKIP and SEARCH
mode. In “SKIP mode” the TV only stops on
channels that are programmed into memory when
the CHANNEL UP/DOWN buttons are used.
When the SKIP mode is off, the TV will stop on
all active channels.
14. TUNING UP/DOWN BUTTONS
Press the tuning UP/DOWN button to tune the
radio frequency from a low to high frequency
channel. The radio is tuned in 200 kHz step size.
Pressing and holding the tuning buttons for more
than two seconds will result in rapid radio tuning
to the next strong station as displayed on the LCD
window.
10. ERASE/WRITE BUTTON
When tuned to a channel press this button to store
or erase the channel from memory. The stored
channel numbers are displayed in “GREEN” on
the screen and the non-stored channel numbers
are in “RED”. When the skip mode is on, the
VOH684 will tune to only the stored channels when
using the CHANNEL UP/DOWN buttons.
15. VOLUME UP/DOWN BUTTONS
Press the volume UP/DOWN button to increase
or decrease the volume levels of the headphone
jack.
16. MEMORY BUTTON
Remote Controlled Radio Functions
11. FM RADIO POWER ON/OFF
Tune to the desired radio station frequency. Press
the memory button repeatedly until the desired
preset number is displayed. Press and hold the
memory button. MEM0 will appear in the display.
The radio station frequency is now stored in the
preset number.
Press this button to turn the FM Radio On. The
radio station frequency will be displayed on LCD
display window. Press the button again to turn
the FM Radio Off.
-8-
128-6116
8 of 16
Remote Controlled VCP Functions
These features can only be used with an Audiovox Video
Cassette Player, if this option was installed with your
video package.
17. POWER BUTTON
This button is used to turn the VCP on and off.
18. “REW” REWIND BUTTON
CHANNEL SET UP
In order to easily access all available TV channels, it
may be necessary to perform channel auto-
programming whenever the vehicle’s geographic
location has changed, i.e. city to city, weak signal area.
1. Press the AUTO MEMORY button on the Remote
Control Unit or the AUTO PROGRAM button on
the drop down video unit. You will see the TV
cycle through all its channels. The built-in
microprocessor will automatically note each
channel that is actively broadcasting in your area.
2. (A) To tune only strong clear channels with
the CHANNEL UP/DOWN buttons, press the
SKIP/SEARCH button on the Remote Control
Unit until “SKIP MODE ON” is displayed on
the bottom of the screen. The TV will now
tune only to strong active channels when the
UP or DOWN buttons are used on the monitor
or remote control.
If this button is pushed while the tape is stopped, the
tape will rewind. If this button is pushed while the
tape is playing, the VCP will go into rewind search
mode. For more information consult the Audiovox
VCP owner’s manual.
19. PLAY BUTTON
Press this button to activate play mode while a tape
is loaded into the VCP. This button may also be
used to disengage search and pause modes. For
more information, consult the VCP owner’s manual.
20. “F.FWD.” FAST FORWARD BUTTON
If this button is pushed while the tape is stopped,
tape will fast forward. If this button is pushed while
the tape is playing, the VCP will go into fast forward
search mode. For more information on the search
feature of the VCP, consult the VCP owner’s manual.
21. REPLAY BUTTON
3. (B) To tune weak or marginal channels with
the CHANNEL UP/DOWN buttons, press the
SKIP/SEARCH button on the Remote Control
Unit until “SKIP MODE OFF” is displayed on
the bottom of the screen. Tune to the desired
channel using the CHANNEL UP/DOWN
buttons or go directly to the channel by using
the 0-9 buttons on the Remote Control.
Pressing this button will rewind tape and immediately
begin playback when the tape is fully rewound.
22. STOP BUTTON
Press this button to stop the tape.
-9-
128-6116
9 of 16
then be displayed continuously. The number
will be displayed continuously. The desired
frequency is now. The unit can store 6 radio
station frequencies using the above procedure.
6. Pressing the Recall button will scroll through the
six presets.
7. Pressing the Volume UP or DOWN button in the
remote control unit will set the desired volume
level in the headphones.
8. Press the Mute button on the remote control unit
to mute the sound in headphone and press Mute
button again to restore the sound to the original
level.
4. To ERASE a channel, press the ERASE/WRITE
button on the Remote Control Unit until “MANUAL
MEMORY XX ERASE” is displayed on screen.
To STORE a channel, press the button until the
MANUAL MEMORY XX ADD is displayed on
screen.
Note: Please refer to page 2 for more information on
TV reception.
FM Radio Operation
1. If using wired headphones, insert the headphone
set plug into the headphone jack on the right side
of the LCD pod labelled RADIO EAR. If using a
switch the channel A/B switch to channel B for
the FM radio. Channel A is used for video audio.
2. Press the Radio power on button. The LCD
window will display the FM station frequency and
memory channel number.
Turning the VOH684 On or Off
1. Sliding the screen release lock forward will unlock
the LCD screen and it will drop down slightly. Pivot
the screen downward until a comfortable viewing
angle is reached. The internal friction will hold the
screen in position while the system is in use.
2. Pressing the power button on the pod or the remote
will turn the system on or off alternately. When in
use the internal backlighting will illuminate the
controls.
3. Press the tuning UP or DOWN button to select
the desired radio station.
4. If the radio station is broadcasting in stereo, then
LCD window will display STEREO.
5. Press the Memory button and select the preset
number you wish to assign. The number can be
selected from 1 to 6 sequentially. The selected
number will flash. Press and hold the memory
button until the display stops flashing. The preset
will be stored after 2 seconds. The number will
3. After the unit has been turned on and is displaying
a picture, adjust the viewing angle, by pivoting the
screen to optimize the picture quality.
4. Remember to turn the unit off and pivot the LCD to
the locked position when not in use.
-10-
128-6116
10 of 16
Remote Sensor
Operation
The VOH684 incorporates an Infrared sensor which
relays signals from the remote control to allow the
VOH684 and VCP to be controlled simply by pointing
its remote control at the remote sensor eye. This
provides control of auxiliary equipment such as an
Audiovox Video Cassette Player. The infrared sensor
can relay signals from any manufacturer’s remote
controls to component connected to the Video 1 and
2 inputs, such as a DVD player. In this case you
must use the remote control supplied with
the DVD player.
Overhead Dome Lights
The lights integrated into the VOH684 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.
Infrared
Dome
Light
Switch
Transmitters
Remote
Sensor Eye
Remote
Sensor Eye
-11-
128-6116
11 of 16
Accessories
Controls and Indicators (Fig.1)
1. INFRARED PICKUP SENSORS – (Receives
signals from transmitter)
2. BATTERY COVER
3. VOLUME CONTROL
4. POWER SWITCH
5. POWER INDICATOR LED
6. CHANNEL A/B SWITCH
7. AUTO ON/OFF MICRO SWITCH
Wireless Headphones
The VOH684 includes a built-in infrared transmitter
and Audiovox wireless headphones (Part Number
IR2CHS-(Two Channel). The volume can be adjusted
with the control on each headset. The wireless
headphones must be used within a line of sight from
the transmitter, as infrared transmissions, like visible
light travel only in a straight line.
Fig. 1
R
Headset Special Features
1
-Dual Channel.
6
2
5
-Automatic Level Control prevents input
signal over loading.
3
-Uses high frequency infrared light to assure
a clean signal for clear reception.
4
Auto ON/OFF Micro Switch is activated when headphones are
placed on head (shown below)
7
-12-
128-6116
12 of 16
NOTE: This equipment has been tested and found
to comply with the limits for a Class B digital device,
pursuant to Part 15 of the FCC Rules. These limits
are designed to provide reasonable protection against
harmful interference in a residential installation. This
equipment generates, uses and radiate radio
frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful
interference to radio communications.
Battery Installation (Fig.2)
1. Place two alkaline AAA batteries in the
Headphone’s battery compartment making sure
that the battery polarity is correct.
2. Replace the battery cover.
Fig. 2
Product Specifications:
Operating range : up to 25 Ft.
Frequency Response : 35 – 18,000Hz
S/N ratio : 60 dB
Channel Separation : 45 dB
HEADPHONE OPERATION
IMPORTANT: To prevent possible ear damage,
Read the following Carefully!
Optional Accessories
Wired Headphone
There are two 1/8” headphone jacks on the VOH684
that can be used with any standard stereo
headphones. The jack, TV EAR, is used to listen to
the video program audio. The audio volume is
controlled by the TV VOLUME up/down buttons. The
jack, RADIO EAR, is used to listen to the FM
broadcast. The audio volume is controlled by the
RADIO VOLUME up/down buttons. Remove the
protective plastic cover to access the jacks.
Remember to replace the cover when the jacks are
not in use.
1. Turn the headphone volume down before turning
on the power. Turn on the headphone power then
increase the headphone volume to a comfortable
level.
2. Before switching between channels A and B,
remove headphones and turn the volume down
because the signal of channel could be louder
than the other.
-13-
128-6116
13 of 16
Wired FM Modulator
until “Video 1” is displayed on the screen. The VCP
may also be operated with the remote or the buttons
on its face. The VOH684 is now ready to play the
audio and video signals from the VCP if it is
connected to the “Video 1” input. Inserting a tape into
the VCP will turn it on and automatically activate the
play mode. If a rewound tape had already been loaded
into the VCP, prior to its activation press play on the
VCP or on the remote control to view the tape. For
more information see the operator’s manual
accompanying your VCP.
Your video system may be equipped with an RF
modulator, that allows you to listen to the VOH684’s
video audio signal by tuning your vehicle’s radio 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 of the vehicle’s radio will be diminished.
Setting the remote mounted toggle switch off will allow
normal radio reception.
Aux Video 2
The second video input may be connected to a DVD
player, video game system, or other audio/video input.
To play the Video 2 source, turn the VOH684 on and
press the source button on the VOH684 or the TV/
Video button on the remote control until “Video 2” is
displayed on the screen. Turn the source component
on with its power button or remote control. The
VOH684 is now ready to play the audio and video
signals from the source connected to video 2 inputs.
Video Output
The VOH684 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 displayed by the
VOH684
to an additional monitor or video display. Please see
your installer for more information.
Audiovox Video Cassette Player (Aux Video 1)
In most installations a VCP will be connected to the
“Video 1” input. To view a video cassette, turn the
VOH684 On and press the source button on its control
panel or the TV / Video button on the remote control
-14-
128-6116
14 of 16
Replacement Parts
Troubleshooting
PROBLEM
SOLUTION
Remote Control
136B2063
102B3596
102B3597
Poor TV
reception
• Perform auto programming of the tuner.
• Verify antenna condition.
IR Sensor Cover
• Note: Due to the nature of TV signals,
vehicle motion, direction the vehicle is
facing, distance from the transmitter,
nearby surroundings and weather may
adversely affect TV reception. These
conditions may result in the following:
picture roll, "snowy" picture, or momentary
loss of color. Please refer to page 2 for
more information on TV reception.
Headphone Jack Cover
Specifications
Edge Light Tube
Cold Cathode Fluorescent
Light (CCFL)
LCD Backlighting
Resolution
1152 (RGB) x 234
269,568
Poor vehicle in-
dash radio
reception (FM
modulator
• Check the condition of the vehicle’s radio
antenna.
Pixels
• 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.
0 - 40 °C
32 - 104 °F
Operation Temperature
Storage Temperature
installed)
-20 - 80 °C
4 - 176 °F
IR sensor
inoperative
• Verify that the batteries in the remote are
fresh.
• Verify that the remote sensor eye is not
10,000 Hours
35db
Backlight Life
Sensitivity
obstructed.
• Verify that the infrared transmitter is affixed
over the sensor eye of the component to
be controlled.
NTSC
Video Display System
Audio Output
0.6W @ 16 Ohms
-15-
128-6116
15 of 16
36 MONTH LIMITED WARRANTY
Applies to Audiovox Mobile Video Products
AUDIOVOX ELECTRONICS CORP. (the Company) warrants to the original retail purchaser of this product that should this product or any
part thereof, under normal use and conditions, be proven defective in material or workmanship within 36 months from the date of original
purchase, such defect(s) will be repaired or replaced with reconditioned product (at the Company's option) without charge for parts and repair
labor.
To obtain repair or replacement within the terms of this Warranty, the product is to be delivered with proof of warranty coverage (e.g. dated
bill of sale), specification of defect(s), transportation prepaid, to the Company at the address shown below.
This Warranty does not extend to the elimination of externally generated static or noise, to correction of antenna problems, to costs incurred
for installation, removal or reinstallation of the product, or to damage to tapes, discs, speakers, accessories, or vehicle electrical systems.
This Warranty does not apply to any product or part thereof which, in the opinion of the Company, has suffered or been damaged through
alteration, improper installation, mishandling, misuse, neglect, accident, or by removal or defacement of the factory serial number/bar code
label(s). THE EXTENT OF THE COMPANY'S LIABILITY UNDER THIS WARRANTY IS LIMITED TO THE REPAIR OR REPLACEMENT
PROVIDEDABOVEAND,INNOEVENT,SHALLTHECOMPANY'SLIABILITYEXCEEDTHEPURCHASEPRICEPAIDBYPURCHASERFOR
THE PRODUCT.
This Warranty is in lieu of all other express warranties or liabilities. ANY IMPLIED WARRANTIES, INCLUDING ANY IMPLIED WARRANTY
OF MERCHANTABILITY, SHALL BE LIMITED TO THE DURATION OF THIS WRITTEN WARRANTY. ANY ACTION FOR BREACH OF ANY
WARRANTYHEREUNDERINCLUDINGANYIMPLIEDWARRANTYOFMERCHANTABILITYMUSTBEBROUGHTWITHINAPERIODOF48
MONTHS FROM DATE OF ORIGINAL PURCHASE. IN NO CASE SHALL THE COMPANY BE LIABLE FOR ANY CONSEQUENTIAL OR
INCIDENTAL DAMAGES FOR BREACH OF THIS OR ANY OTHER WARRANTY, EXPRESS OR IMPLIED, WHATSOEVER. No person or
representative is authorized to assume for the Company any liability other than expressed herein in connection with the sale of this product.
Some states do not allow limitations on how long an implied warranty lasts or the exclusion or limitation of incidental or consequential damage
so the above limitations or exclusions may not apply to you. This Warranty gives you specific legal rights and you may also have other rights
which vary from state to state.
U.S.A. : AUDIOVOX ELECTRONICSCORPORATION, 150 MARCUS BLVD., HAUPPAUGE, NEW YORK 11788 l 1-800-645-4994
CANADA : CALL 1-800-645-4994 FOR LOCATION OF WARRANTY STATION SERVING YOUR AREA
128-6116
© Copyright 2001 Audiovox Electronics Corp. 150 Marcus Blvd. Hauppauge, NY 11788
|