Copland CSA14 int sm

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LHND CSRll

Bias adjustment for COPLAND GSA-14:

1.If the amplifier have been to service, for changing tubes or other parts
in the outputstage, you should first turn the bias- potentiometers
P 1 and P 101 fully in counter-clockwise direction.

2.Turn on the amplifier, and let it warm up for 1 minute.

3.Connect a voltmeter ( on mV measuring range ) across R 52 or R 53
( for left channel ) and adjust with P1 for a reading of 5 mV.

4.For right channel, measure across R152 or R153,
and adjust to 5 mV with P101.

5.Let the amplifier heat for 30 minutes, then please repeat 3. and 4.
6.If no parts have been canged in the outputstage of the amplifier

the bias should already be close to the right value, so you can
start bias-adjustment at point 2. ( you don't need to do point 1. )

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