Aiphone MC-3B User Manual

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832577 1088i@)

O AlPHONE

INSTRUCTIONS

MODELS;

MC-3 MC-3B

(Master station, wall-mount)

(Master station, desk-use)

NOTE: The MC-3B handset assembly is exactly

the same as MC-3’s.

NAMES AND FUNCTIONS

MC-3

@ Channel selector buttons

@ PAGE button

® CoO cord ® Handset ® Receiver @ Microphone ® Channel occupied LED #1 & # 2 (red & green)

MC-3B

@ Case @ Channel selector buttons ® Channel occupied LED #1 & #2 (red & green) ® Coil cord ® Terminal box & cord of approx. 1.4 m (4'-7-l/8")

J FEATURES

Two separate talk channels. Two LEDs illumination indicates channels in use. Common talk on either channel. Page button built in handset. Rubber mounted ECM (Electret Condenser Microphone) with amplifier built in handset. Back mounting plate for use with a single gang electrical box for wall mounting. MC-3 station divided in two sections with a positive contact plug connecting each half. MC-A adaptor allows MC-3 stations to be connected to background music and a paging amplifier system. Channel selector buttofis self-cancel. Station-to-station communication separate from paging.

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BEFORE YOU INSTALL AND OPERATE THE EQUIPMENT

— Prohibitions and precautions —

* Installation;

1. DO NOT CONNECT ANY TERMINAL ON ANY UNIT TO AC POWER LINES.

2. Select the installation locations that would not be exposed to temperature/humidity extremes, water, oil, dust, iron dust, inflammable & chemical products, etc.

3. Be sure not to plug power supply into AC receptacle until you complete wiring connections, and unplug before opening the unit.

* Maintenance;

1. Clean your equipment with a soft cloth dampened with neutral household cleanser. Never use thinner nor benzine, etc.

2. How to replace major parts;

* HANDSET

1) Remove a large screw located on front case of MC-3.

2) Gently lift lop section of MC-3 case and turn it over.

3) Remove the phillip screw holding coil cord to lower section of the MC-3 top case.

4) Unplug the female section of the three prong positive connector (i.e. small male plug).

5) Remove handset assembly.

6) Plug in the replacement handset’s three plug positive connector.

7) Screw the coil cord into place.

8) Gently replace top section of MC-3 case on to bottom section.

9) Re-screw the large screw on bottom front case of MC-3 to secure.

* NOTE: The handset assembly is a complete entity consisting of handset,

body, earpiece, mouthpiece, PCB amplifier, electret condenser micro phone, 50-Hl receiver, three conductor 103S2 coil cord, and female section of three prong positive contact plug.

INSTALLATION

(1) ACTUAL TERMINAL LOCATIONS

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MC-3 BOTTOM CASE INSIDE VIEW

(1-3/8")

35 mm

55 mm

(2-3/16”)

22 mm

(7/8")

4 5

1 2 3

MC-3B TERMINAL BOX

INSIDE VIEW

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