Maintenance Alignment Procedure - Audiolab 8200P Service Manual

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User instruction (6 pages)

Table Of Contents

Table of Contents

Audiolab 8200P Bias Procedure

This procedure must only be carried out after the unit has passed a full functional test .

1.Connect the unit to be biased to mains and switch on. The mains voltage should be set to 230VAC

± 2% or 120VAC ± 2% while the test is done.

2.Wait for the unit to power up.

3.Set bias as shown in table below.

4.The test continues until the bias is steady at the final value in the table.

For 8200M bias is measured across R148 (left channel) and R248 (right channel).

All settings are mV dc.

Remarks：Also the test continues unil the bias is steady at the final value in the table.

8200P Ageing test step

Ageing test step

Test condition: Vin = 1V, 1kHZ sine wave(Load: 8ohm) 1/8 Output Power

1: Equipment and Set up

1):Set the "RECORD" and "INPUT" knob to CD. "GAIN" set to 0dB position.

Volume set to Max.

2: Ageing test

1):Power ON the unit the "ON" LED will lit and the "PROTECT" LED also lit

but will OFF after 5-10 second.

2):Add 5% of AC input for the test.

unit rated voltage

3:Soak test with the condition above with 48 hours.

4. Check all the parameter within the spec.

Notes：

1.If the Bias Okay, switch off the unit and put "PASSED" mark on the unit.

8200P