Sennheiser 300 IEM - 12-03 Specifications download pdf (Page 70)

Troubleshooting

Error checklist

If problems occur that are not listed in the above table or if the problems cannot be solved with the proposed

solutions, please contact your local Sennheiser agent for assistance.

Problem Possible cause Possible solution

No operation indication Batteries are flat or

accupack is flat (receiver only)

Replace the batteries or

recharge the accupack

No mains connection (transmitter

only)

Check the connections of the mains

unit

No RF signal Transmitter and receiver are not on

the same channel

Set transmitter and receiver to the

same channel

Transmitter is out of range Check the squelch threshold setting

(see “Adjusting the squelch threshold

(receiver only)” on page 63) or

reduce the distance between

transmitter and receiving antenna

RF signal available, no audio

signal, “MUTE” display

appears on the display panel

Transmitter is set to mono operation

and the pilot tone evaluation of the

receiver is activated

Deactivate the pilot tone evaluation

on the receiver

Receiver’s squelch threshold is

adjusted too high

See “Adjusting the squelch threshold

(receiver only)” on page 63)

Audio signal has a high level

of background noise

Transmitter sensitivity is adjusted

too low

See “Adjusting the sensitivity

(transmitter only)” on page 64

Audio signal is distorted Transmitter sensitivity is adjusted

too high

See “Adjusting the sensitivity

(transmitter only)” on page 64

No access to a certain channel During scanning, an RF signal has

been detected on this channel and

the channel has been locked

See “Scanning the channel banks for

free channels (receiver only)” on

page 62

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Sennheiser 300 IEM - 12-03 Specifications Page 70

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