Aiphone C-123LW installation manual Installation Tips, Troubleshooting Guide

INSTALLATION TIPS:

1.Use shielded wire for the communication path, and ground one end of the shield to an earth ground.

2.Run intercom wire at least 20” away from AC wiring, fluorescent lights or dimmer switches.

3.Keep intercom cable away from alarm, data, phone, video cables, and any other potential source of interference.

4.Door release wires must be in a separately jacketed cable from the intercom wires. Use two separate cables; one for audio and one for door release.

5.When installing a second master station, wire must be run from the first master station, not from the door station. See diagram on page 2.

6.Do not install the master station near light switches, dimmer switches, or other devices that may cause interference with the intercom system.

7.Do not install the master station on the opposite wall from the door station. If the units are too close, acoustical feedback may result.

TROUBLESHOOTING GUIDE:

PROBLEM	POSSIBLE CAUSE	SOLUTION
		When door calls in, it shorts the #1 terminal to the E terminal.
No call in from door to master, but	Reversed DAK-2S component module.	If the DAK-2S is installed backwards the chime from the
communication works fine.		door call-in will not be heard. Install the DAK-2S component
		module with the bare wire under the 1 terminal, and the door
		station 1 wired to the colored wired end of the DAK-2S.
When the talk button is pressed, the other	Missing or reversed DAK-2S	Install the DAK-2S component module as described above
master rings.	component module.	and shown on the dual master instructions.
		If both C-ML/A’s share the same power supply, a ground loop
When the talk buton is pressed, feedback is		feedback will occur when the talk button is pushed. Install a
heard at both masters.	Common power supply.	separate power source for each master.
		+/- are on left column, E/1 are on right column. If swapped,
Unit appears dead; No functionality	Terminals 1 and - crossed	unit will appear dead. Verify that 1 from the door station is
		connected to 1, and negative of power supply is connected to -.
	Power supply and batteries both	Take batteries out of the master station. Both power sources
System squeals and batteries get hot	installed.	cannot be used simultaneously.
Chime tone sounds weak, low frequency	Weak batteries or low voltage.	If batteries are installed, replace them. If using a power
		supply, check for 6VDC. If low, install a new SKK-620.
		If the resistance of the wire is too great, usually from
Master stays on; does not time out.	Incorrect cable being used.	exceeding distance limitations, the master may not time out as
		designed. Refer to wire specifications in the instructions.
		Remove front cover of the C-ML/A and locate volume
Voice volume is too loud or too soft.	Volume control not adjusted properly.	potentiometer through hole at bottom of unit. Use a small
		screwdriver to adjust the volume, clockwise to increase.
		There is not a separate call tone volume adjustment on the
		C-ML/A so the volume level cannot be altered. Surface mount
Chime tone volume is too loud.	Standard volume level.	component level modification would be required, which is not
		paractical
		Make sure the negative from the 12VDC supply for the RY-AC
		is connected to the negative of the C-ML/A master. Make sure
RY-AC external signaling relay not working.	Missing or wrong connection.	the WHITE wire of the RY-AC is connected to the DAK-2S
		component module to terminal 1, not negative terminal.

Aiphone Communcation Systems
1700 130th AVE N.E.
Bellevue, WA 98005	Toll Free Technical Support:
(425) 455-0510
	1-800-692-0200
FAX (425) 455-0071
	E-mail tech@aiphone.com

C-123LW Supplement Pg. 4 #90102 0610JD