Beyerdynamic SIR 320 operating instructions Trouble shooting, Fault Possible reason Action

SIR 320		SIR Infrared System
Trouble shooting
Fault	Possible reason	Action
No sound at headphone	Headphone not connected	Plug in headphone
No sound at headphone	Receiver not switched-on	Push one button at the
		navigation dial with
		headphone connected
No sound at headphone	Display at the receiver not lighting	Insert new batteries and carry
	after switching on.	out a hardware reset
	Batteries not inserted, empty or
	weak.
Receiver can not be	Undefined working order	Carry out a hardware reset
switched-on
After switching-on, the	Undefined working order	Carry out a hardware reset
back light is shining only,
no further keystroke is
possible
Receiver gets noise at the	No IR - reception	Switch on IR–transmitter
headphone only
Receiver gets noise at the	No IR - reception	Connect the radiators with
headphone only		active IR-transmitter
Receiver gets noise at the	No IR - reception	Change IR-channel to other
headphone only		position
Receiver gets noise at the	Selected IR-channel has no	Check IR-transmitter using
headphone only	transmission	correct adjustment
Receiver gets noise at the	Receiver is in Shift mode setting	Deactivate the Shift mode
headphone only	(instead displaying „00“ (OR-ch)	(See Service mode)
	you will see „or“
No sound at headphone	Volume to low	Adjust volume (VOL up)
No sound at headphone	Wrong headphone used	Use the correct headphone
		(see accessories)
Receiver switched off after	No reception signal	Check whether the IR-
approx. 15 sec.		transmitter and the radiators
		are switched-on
Receiver switched off after	Reception channel will not be	Change channel setting
approx. 15 sec.	transferred from IR-transmitter	(channel up or down)

22 Copyright by beyerdynamic