PRO-100  (330-1145)               Operation            Faxback Doc. # 16038

CHARGING THE BATTERY PACK

The headphones are powered by a nickel cadmium battery pack.  If the
headphone's range decreases or you hear no sound from the audio source,
follow these steps to charge the battery pack.

1.  Turn off the headphones.

2.  Plug the supplied charging cable into the headphone's charger jack on
    the left earpiece.

3.  Plug the other end of the charging cable into the base's CHARGER jack.

It takes 12 to 14 hours to completely recharge the battery pack.

NOTE:  Before you use the headphones the first time, you must charge them
       for at least 24 hours.

USING YOUR PRO-100 WIRELESS HEADPHONES

1.  Turn on the audio source.

2.  Adjust the LEVEL control on the back of the transmitter.

    If you connected the transmitter to jacks that are not controlled by
    the audio source's volume control, rotate LEVEL all the way to the
    right.  Then slowly adjust LEVEL to the left until the AUDIO LEVEL
    indicator just starts to flicker.

    If you connected the transmitter to a headphone jack or to jacks that
    are controlled by the audio source's volume control, set the system's
    volume control to about 1/3 of the maximum and rotate LEVEL all the
    way to the left.  Then slowly adjust LEVEL until the AUDIO LEVEL
    indicator just starts to flicker.

    NOTE:  Some audio sources might not make the AUDIO LEVEL indicator
           flicker.  For these sources, rotate LEVEL all the way to the
           left.

3.  Rotate VOL on the headset to the minimum position.

4.  Set the headphones' ON/OFF switch to ON and rotate TUN until the
    stereo indicator on the right earcup lights.

5.  Put on the headphones.  If necessary, slide the earcups up or down to
    adjust the headband to fit your head.

6.  Slowly rotate VOL on the headset to a comfortable listening level.

To preserve battery life, be sure to turn off the headphones when you are
not using them.

NOTES:  The stereo indicator on the right earcup lights when the
        headphones are receiving a good signal.  As you move out of the
        transmitter's range, the stereo indicator turns off.  You still
        can hear the audio source in mono until you move completely out of
        range.

        If reception is poor, even when the batteries are fully charged
        and you are near the transmitter, try moving the transmitter to a
        higher location or moving it away from the audio source.

Listening Safely

To protect your hearing, follow these guidelines when you use your
headphones.

    Set the volume to the lowest setting before you begin listening.  After
    you begin listening, adjust the volume to a comfortable level.

    Do not listen at extremely high volume levels.  Extended high-volume
    listening can lead to permanent hearing loss.

    Once you set the volume, do not increase it.  Over time, your ears
    adapt to the volume level, so a volume level that does not cause
    discomfort might still damage your hearing.

ADJUSTING THE FREQUENCY

If you receive interference from other devices, you might be able to reduce
the interference by adjusting the PRO-100's operating frequency.

Simply rotate FREQ ADJUST on the transmitter then rotate TUN on the right
earcup until the headphone's stereo indicator (on the right earcup) lights
steadily.

REPLACING THE BATTERY PACK

When operation time on a full charge becomes too short, you must replace
the battery pack.  You can order a replacement battery pack through your
local Radio Shack store.

Follow these steps to replace the battery pack.

1.  Turn off the headphones.

2.  Carefully pull back the foam earpad from the earcup that has the ON/OFF
    switch to expose each screw.  Do not remove the foam earpad.

3.  Use a small Phillips screwdriver to remove the three screws.

4.  Carefully remove the plastic case with the speaker attached.

    CAUTION:  Take care not to damage the wires going to the earcup's
              speaker.

5.  Unplug the old battery's connector from the headphone and remove the
    battery.

6.  Plug the new battery's connector into the headphone.  Then secure the
    battery in the headphone using double-sided tape.

7.  Secure the case using the screws you removed in Step 3.

Cautions for Replacing the Battery

    Use a replacement battery pack of the required type (3.6V 280 mAH
    rechargeable battery, Cat. No. 23-192, available through your local
    Radio Shack store).

    Do not dispose of the battery pack in a fire because it can explode.

    Do not open or mutilate the battery pack.

    Be careful not to short the battery pack by touching the connector with
    conducting materials, such as rings, bracelets, and keys.  The battery
    pack or conductor might overheat and burn.

    At the end of the battery pack's useful life, it must be recycled or
    disposed of properly.  Contact your local, county, or state hazardous
    waste management authorities for information on recycling or disposal
    programs in your area.  Some options that might be available are: 
    municipal curbside collection, drop-off boxes at retailers, recycling
    collection centers, and mail-back programs.


(llg/all-07/20/95)