TOA Electronics TOAEXES-5OOO manual Produces reverberation

Sound	of	the	other	Same symptom		Adjust the volume control of
party	is	broken		remains even		station speaker if the room
during call.				the	station	produces reverberation.
				is	replaced.	(Lower the volume.)
						Increase the gain of MIC AMP.
						Replace PCB after checking if
						MIC unit is not touching its
						case.
Immediately			after	Same symptom		One of R-Lines is disconnected.
the calling			tone,	remains even		Fault in photo coupler PC-504
the line switches				the	station	on LMU.
to cancel, busy,				is	replaced.	Fault in MT-547 on LMU or in
dial tone, etc.						the station.
				Becomes normal		One of the R-Lines is discon-
				if	the station	nected or the station connector
				is	replaced.	is not connected properly.

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