Aiphone MA-D - Manual (Page 6)

(TROUBLE-SHOOTING GUIDE)
No. MODE OF TROUBLE LOOK FOR
1
Unit totally dead. * Power supply not plugged.
* Connector leads to power supply disconnected.
* Short in connector leads to power supply.
2
Only picture tube lights. * Inferior connector of coaxial cable at the terminal end.
* Short in coaxial cable connections at the terminal end.
* Break in coaxial cable.
* Coaxial cable disconnected.
* Defective door station (in camera).
3
Picture tube lights, but no picture. * The shutter has closed to protect the vidicon in the camera
from direct sunlight . . . this is normal operation, not a fault.
* Defective door station (in camera).
4
Can call and communicate, but picture tube
remains dark.
* Defective room station (in video monitor).
5 Cannot call from door station. * Defective door or room station.
6 Picture is okay, but no audio signal. * Defective door or room station.
7 Inferior sensitivity and contrast of picture tube. * Worn-out vidicon (A general life of vidicon is approximately
8 Fuzziness in bright area.
3 years in normal application).
9 Spots in picture.
10
“Negative” image (reversal of black and white). * Worn-out picture tube (A general life of picture tube is
approximately 4 years in normal application).
(
cleaning your intercom stations
)
* Your Aiphone intercom stations may be cleaned with a soft cloth dampened with household cleanser, such Mr. Clean or
Fantastik.
We at AIPHONE are proud of our products. Our designers and engineers strive to bring you the finest in communication
equipment. Each item has been carefully tested and inspected before leaving our factory. Properly installed and used, your
Aiphone intercom system should give years of trouble-free service.
We are pleased to offer the following warranty:
WARRANTY
Aiphone warrants its products to be free from defects of material and workmanship under normal
use and service for a period of one year after delivery to the ultimate user and will repair free of
charge or replace at no charge, should it become defective upon which examination shall disclose
to be defective and under warranty. Aiphone reserves unto itself the sole right to make the final
decision whether there is a defect in materials and/or workmanship; and whether or not the prod­
uct is within the warranty.
This warranty shall not apply to any Aiphone product which has been subject to misuse, neglect,
accident, or to use in violation of instructions furnished, nor extended to units which have been
repaired or altered outside of the factory.
This warranty does not cover batteries or damage caused by batteries used in connection with the
product.
This warranty covers bench repairs only, and any repairs must be made at the shop or place des­
ignated in writing by Aiphone. Aiphone will not be responsible for any costs incurred involving on
site service calls.
I W M* W t
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US*' m
Aiphone Co., Ltd., Nagoya, Japan
Aiphone Corporation, Bellevue, Washington
MA-DI-0286©
— 6
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