Clarion WH204 Troubleshooting guide

Clarion®
WH204
DUAL CHANNEL STEREO
INFRARED HEADPHONES
OWNER'S MANUAL
INSTALLATION GUIDE

WARNINGl
THE CLARION WH204 DUAL INFRARED HEADPHONES ARE
DESIGNED FOR LISTENING TO VIDEO OR AUDIO SOURCES
FOR REAR SEAT PASSENGERS ONLY.
THIS PRODUCT IS NOT INTENDED FOR USE BY THE DRIVER
WHILE THE VEHICLE IS IN MOTION SINCE SUCH USE MAY
DISTRACT THE DRIVER OR INTERFERE WITH THE DRIVER'S
SAFE OPERATION OF THE VEHICLE AND MAY RESULT IN
SERIOUS INJURY OR DEATH. SUCH USE MAY ALSO VIOLATE
STATE LAW.
CLARION DISCLAIMS ANY LIABILITY FOR ANY BODILY
INJURY, INCLUDING FATALITIES, OR PROPERTY DAMAGE
THAT MAY RESULT FROM ANY IMPROPER OR UNINTENDED
USES OF THIS PRODUCT.
ASOUT INSTAllATION
Installation of mobile audio and video components requires
experience with a variety of mechanical and electrical proce-
dures. Even though this manual provides general installation
and operation instructions for your new Clarion WH204 Dual
Channel Infrared Headphones, it does not show the exact
installation methods for your particular vehicle.
If you do not have the required knowledge and experience to
successfully complete the installation, we strongly recom-
mend consulting an authorized Clarion Pro Audio dealer
about professional installation options.
TASLE OF CONTENTS
Introduction ••••••••••••.•••••••••••••••••••••••••••••••••••••••••••••••••• 2
Description
Of Controls and Indicators 3
IR Transmitter Specifications 3
Description of Headphone Controls ~ ••.• 4
Battery Installation .••.•.•••••••••••••••••••••••••••••••••••••••••••..• 5
Operation Description •••••••••••••••••••••••••••••••••••••••••.•••••• 5
Operation Precautions •••••••••••••••••••••••••••••.••••••••••.•••••• 6
Instal/ation Precautions
••••.••..•••••••••••••••••••••••••••••••••••• 6
Mounting Description •••.••.•••••••••••••••••••••••••••••••••••••••••. 7
Wiring Description...
.••••••••••••••••••.•••••.•••••••••••••••••••••••• 8
Troubleshooting •••••••••••••••••••••••••••••.•.•.•.•••••••••••••••••••• 9
FCC Statement ••••••••••••••••••••••••••••••••••••••••.•••••••••••••••••• 9

INTRODUCTION
The Clarion WH204 is a full-featured Dual Channel Infrared
Headphone System specifically created for the mobile envi-
ronment. The WH204 frees you from the tangle of head-
phone wires and lets you enjoy music or TV audio without
the clutter of cables. To ensure the best performance of your
system, please read this manual carefully.
When used with the enclosed pair of individual headphones,
the system allows independent source selection of two audio
channels (ex: audio or video sources), each capable of play-
ing adifferent high-fidelity stereo program. Each headphone
allows for independent volume and source selection to pro-
vide individual and private listening.
Additional Headphones
The Clarion WH204 allows users to take full advantage of the
benefits of infrared audio transmission and its ability to oper-
ate multiple headphones from one single transmitter. There is
no need for Y-adapters, complex installation, or concerns
over electrical overload. Additional headphones, WH204H,
are available through your local Clarion Audio Dealer.
2
Special Features
Automatic Level Control prevents input signal over load-
ing.
Uses high frequency infrared light to assure a clean signal
for clear reception.
Power Indicator LED.
Two Channel Input Operation.
Auto Sensing ON/OFF Circuit.
Independent Volume Controls.
Independent AlB Channel Selection Switches.
About The Manual And Warranty
To start enjoying your new Clarion WH204 system, please
read all remaining instructions listed in this manual. Keep all
instructions for future reference.
This product is covered by a limited warranty (see the
enclosed warranty card). Save the sales receipt to protect
your purchase and aid in warranty service.

DESCRIPTION OF CONTROLS AND INDICATORS
Figure 1. The WH204 Transmitter descriptions.
12 volts dc
1 watt, Power On
4.13x 0.82 x3.69 in.
(104 x
21 x94 mm)
3.69 in.
(94 mm)
(2) M4x12 Sheet Metal Screws,
(1) 5-pin Power/Channel A Molex,
(1) 3-pin Channel B Molex
(2) Plastic Screw cover inserts.
General Specifications
Power Requirement:
Power Consumption:
Dimensions (w xhx d):
Mounting Base
Mounting Holes:
(to centers)
Supplied Accessories:
Infrared Transmiffer
CD IR Array window
Point Infrared LED array window toward users.
CV Mounting hole locations (covers removed)
Use M4x12 sheet metal screws to attach IR Transmitter.
(see Mounting Description on page 7).
IR TRANSMITTER SPECIFICATIONS
010
3

DESCRIPTION Of HEADPHONE CONTROLS
8
Figure 2. The WH204 IR Remote Headphone controls and indi-
cators.
4
Infrared Headphones
@ POWER Switch
Allows user to turn On/Offthe headphone.
@ POWER Indicator
When illuminated the headphones are fully functional.
The indicator will tum off when the headphones are
removed or when the power switch is turned off.
@ CHANNEL SELECTION AJB Switch
Allows user to choose the audio source.
® VOLUME Control
Allows user to set individual listening levels.
(/) BATTERY Compartment
Remove the cover and place 2 Alkaline AAA batteries in
the compartment. (See page 5for information).

BATTERY INSTALLATION
1. Open the battery compartment by sliding the cover
toward the bottom of the Headphone.
2. Place two (2) alkaline AAA batteries into the battery
compartment of
the Headphones, making sure that the
battery polarity is correct.
3. Snap the battery cover back into place.
Figure 3. The Remote Headphone Battery Installation.
OPERA TION DESCRIPTION
PLEASE READ CAREFULLY TO PREVENT DAMAGE TO THE
HEADPHONES OR YOUR EARS.
1. Be sure batteries are properly installed in the
Headphones.
2. Tum the Headphone volume nearly off before turing on
the power switch.
3. Tum the Headphone power switch to the ON position.
4. Place the headphones on your head and the power indica-
tor will illuminate.
5. Adjust the Headphone volume to a comfortable listening
level.
Channel A/B Selection Switch
1. Select the appropriate channel from the desired audio
source.
NOTE: The switch can be changed while the headphones are
in use, but a loud crackle or pop may be apparent.
5

OPERA rlON PRECAUTIONS:
• Do not allow liquids or foreign objects to enter the
WH204IR Transmitter or Headphones.
• If any unit should become wet, tum off all power and let
your authorized Clarion Pro Audio dealer clean or service
the equipment.
DO NOT ATTEMPT TO OPEN OR SERVICE THE IR
TRANSMITTER OR HEADPHONES. THE INTERNAL PARTS
ARE NOT USER-SERVICEABLE. DOING SO WILL VOID THE
WARRANTY.
• Do not drop or excessively jar the WH204 headphones.
• Do not use liquid cleaners on any surfaces. Only use a
soft (cotton or other non-static) cloth to wipe off finger-
prints.
• Do not subject the unit to direct sunlight or an extremely
hot environment (e.g., closed windows on a hot summer
day, direct path of heater vent, etc.).
• Avoid using the products under the following conditions:
6
- After extended parking on an extremely hot or cold day
- Near strong magnetic fields
- In an environment with excessive humidity, dust, or
vibration (e.g., off-road travet etc.)
INSTALLATION PRECAUTIONS
• This unit operates on an automotive 12-volt negative
ground power source and requires additional mobile audio
and video components for proper operation.
• Before installation, disconnect the (-) negative lead from
the vehicle's battery.
• Use only supplied screws and hardware. Make sure all
connections and components are fastened securely.
• At the proposed installation sites, make sure there is ade-
quate space to accommodate the WH204 IR Transmitter
(see Mounting on page 7).
• Use extreme caution when drilling around electrical
wiring, brake lines, and fuel lines. Check clearances on
both sides of a planned installation surface before drilling

any holes or installing any screws.
Always wear protective eyewear when using tools.
• Use only high-quality RCA cables that are no longer than
necessary. Extra-length audio and video cables can cause
signal loss and act as an "antenna" for noise.
• When routing RCA cables, keep them away from power
cables and output speaker wires.
• If a fuse needs replacement, use the same value as the
original. Do not substitute another rating.
MOUNTING DESCRIPTION
Figure 4. The WH204's input connectors and wiring.
7

WIRING DESCRIPTION
Channel B
Molex
(3-pinJ
..
~. .....' ~ r.OromreiBAudioSDfIrCO
,~~ .L (notsuppliedJ
RED - Bflttery l+12V)
ce.
~ r.ar-elAAudios.utrJl
L (not suppliedJ
BLACK· Ground
ChannelA &
Power Molex
(S-pinJ
WH2041R Transmitter
Figure 5. The WH204
1s
input connectors and wiring.
8

TROUBLESHOOTING
Symptom
Cause Solution
System does
Fuse is blown. Replace external fuse with
not work.
the same value.
Headphones
Power wires
Check BATTERY and
indicator illuminated
not connected. GROUND wiring at transmitter
but no sound.
No Power
Batteries not
Insert (2) Alkaline AAA
indicator on phones-
inserted.
batteries into headphones.
Battery polarity
Insert batteries with proper
improper.
polarity.
No sound from
Wrong audio channel
Select the proper audio channel
Headphones.
selected.
(see Page5).
PIN: R90820S105
FCC STATEMENT
This equipment has been tested and found to comply with the
limits for a Class B device, pursuant to Part 15 of the FCC
Rules. These limits are designed to provide reasonable pro-
tection against harmful interference in aresidential installa-
tion. This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in accordance
with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interfer-
ence will not occur in aparticular installation.
If this equipment does cause harmful interference to radio or
television reception, which can be verified by turning the unit
off and on, the user is encouraged to consult the dealer or an
experienced radio/television technician for help.
9