Troubleshooting - Pioneer VMR-M770 Manual Del Usaurio

Microphone hole
2. Handling of the product
• Do not attempt to insert plugs for other headphones into the jack on the unit.
Only plugs specifically designed for this earphone-microphone set can be
used.
• Do not insert or remove the plug when power is ON.
• If the unit is brought near a radio, signals from the radio may cause audible
noise. In this event, remove the unit from the vicinity of the radio.

3. Troubleshooting

If you suspect a malfunction, perform the following checks, since a simple
operating error may be the cause of the problem. Perform the following checks,
and if the problem persists, consult your dealer or nearest Pioneer authorized
service centre. When visiting your Pioneer authorized service centre for repairs,
be sure to take both the earphones and main unit.
Problem
No sound.
Sound is distorted.
6
En
• If a hand is passed over the microphone (located on the
outer side of the earphone-microphone), a feedback
sound ("howling") may be audible. In this case, remove
your hand from the region of the microphone, or lower
the volume.
• Always use both right and left earphone-microphones
together. Using only one side may result in audible
feedback sound ("howling").
• Medium (M) tips have been factory installed on the
XS
earphone shafts. If these do not match your ear canals,
S
switch to one of the other sizes provided (XS) , (S) or
M
(L).
• Earphone tips can be easily removed by pulling the tip
L
gently away from the earphone-microphone body.
- When installing tips, press the tips fully onto the
earphone-microphone shaft.
• Check the battery is installed correctly (are
and
• Replace the battery.
• Check connection between earphones and
main unit.
• Raise the sound volume.
Remedy
polarities correct?).