Ecler PAM4100, Руководство по обслуживанию

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QUALITY CONTROL
All mechanical parts should be visually revised, in order to detect scratches on the unit's painting; all
screws should be on their place,correctly tight and unmarked. Check out the unit's general presentation.
BURNING TEST
Leave the tested units connected to the burning verifyer, while performing their burning test. If testing
PAM 6100, do not connect more than 4 power stages to each column. If testing PAM 4100, a maximum
of 7 units can be connected simultaneously to each column.
VERIFICATION USING MUSIC
Verify the unit's sound quality, wich should be distortion- and noise-free. Once the unit is turned in and
its STANDBY cycle time has elapsed, the output relays release, but no annoying noise is heard through
the loudspeakers. Also check that all potentiometers can run smoothly their whole sweep, without noise
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 all in- and outputs. Short the output terminals while carrying
amplified signal, wait approximately 5 or 10 seconds, after wich the unit should perform a general reset.
Verify the PROTEC indicating LED lights up, the output signal is cutted off, and the STANDBY cycle is
correctly done. Once the short-circuit is removed, the unit recovers normal functioning.