Ecleree MPA4-80, Руководство по обслуживанию

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author:
Queralt
date:
000719
approved:
num:
51.0025
version:
01.00
VERIFICATION PROCESS
title:
EP01-99B
ECLER
BURNING (BURN-IN) TEST
Leave the tested unit connected to its correspondent voltage mains socket, applying
input signal and connecting load impedances, and working at 3dB under its maximum
output power level for at least 24 hours.
VERIFICATION USING MUSIC
Verify the unit's sound quality, which should be distorsion- and noise-free. Also check
that all potentiometers can run smoothly their whole sweep, without annoying noises
and crisperings. At their minimum position, check that output signal is completely
cutted off. To ensure that all electrical junctions are well-fixed, hit the tested unit
against your working table, obviously without damaging its outer presentation. Verify
also all inputs and outputs. At last, short-circuit the output terminals while carrying
amplified signal, and verify that once short-circuit is removed, the amplifying stages still
are working.
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