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If a problem occurs ...
28 | RS 220
Other problems
If a problem occurs that is not listed in the above table or if the problem
cannot be solved with the proposed solutions, please contact your local
Sennheiser partner for assistance.
To find a Sennheiser partner in your country, search at
www.sennheiser.com.
Problem Possible cause Possible solution Page
The trans-
mitter
cannot be
switched on
No mains connection Check the connec-
tion of the power
supply unit to the
transmitter and to
the mains
14
Headphones
cannot be
switched on
Rechargeable batteries are
flat
Recharge the
rechargeable
batteries
14
Rechargeable batteries are
inserted the wrong way
round
Remove the
rechargeable bat-
teries and observe
correct polarity
25
Headphones
and/or trans-
mitter do not
react to any
key press
Function is disturbed Reset: Pull out the
mains plug from
the transmitter,
remove the
rechargeable
batteries from
the headphones
for 30s
16
Headphones
cannot be
recharged
Headphones do not make
contact to the charging
contacts
Ensure that the
headphones are
properly seated
on the charging
contacts
14
Clean the charging
contacts
25
Power LED 9
flashes
continuously
Headphones haven’t found
an unused frequency
Place the trans-
mitter in a dif-
ferent location
24
If necessary,
switch off a
product operating
on Bluetooth or
WLAN
–