Aiphone Installation Tips, Troubleshooting Guide, LEM-1DLSupplement Pg. 4 #90111 1109JD

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, and video cables.

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 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
		(A) Press OFF button on master. If call tone still doesn’t come
		through, read solution (B).
		(B) Make sure jumper is attached to E/- terminals on door
	(A) OFF button on master not pressed.	station (or proper wires jumpered on LS-NVP, LE-SS subs).
No call tone from door to master station.	(B) E/- jumper not attached.	Wire from E/- should be connected to E of master.
		Ensure that the jumper at the door station is attached between
No communication from door station.	E/- jumper not attached	E and - terminals
No call tone, no communication. Chirping		Check power supply. If it’s a model SKK-620, remove and
sound when volume control is turned all the		replace with model PT-1210N. Verify that voltage on +/-
way up.	Wrong voltage on LEM-1DL	terminals is between 12-16V AC or 12-24V DC.
In a system with RY-AC and external signaling		Make sure the component module is installed with the bare
device connected, the external device is	DAK-2S component module missing or	wire under the 1 terminal and the white wire of the RY-AC
activated every time TALK button is pressed.	installed incorrectly.	spliced to the colored wire.
In a dual master system, call tone is heard		Install 1 component module from the DAK-2S at each master.
at the second master when pushing the talk	Missing DAK-2S dual master adaptor	See Pg. 2. If DAK-2S is not available, connect specified diode
button on one master.	kit.	and capacitor in parallel and install as shown on PG. 3.
		Ensure that each master has its own power supply. Use any
In a dual master system, feedback occurs	One power supply is used for both	power supply with output between 12-16V AC or 12-24V DC.
when pressing the talk button.	masters.	Aiphone recommends the PT-1210N.
		Ensure that the intercom wire is run at least 20” from any AC
		electircal wire, or crossed at 90 degrees. Intercom wire should
		be shielded, with the drain wire connected to an earth ground
AC noise when listening to the door station	Intercom wiring run close to AC wiring.	at the master end.
		Ensure that power wires coming from the PT-1210N are not
	Power wires run with communication	run in the same jacket cable with the communication wires run
AC noise when talking to the door station	wires.	to the door.

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

LEM-1DL Supplement Pg. 4 #90111 1109JD