MAINTENANCE ALIGNMENT PROCEDURE
12
Product Initial
setting
After 15
mins
After 30
mins
8200P 60 –65 24 – 25 21.5 – 22.5
All settings are mV dc.
Remarks:Also the test continues unil the bias is steady at the final value in the table.
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).
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.
8200P
Notes:
1.If the Bias Okay, switch off the unit and put "PASSED" mark on the unit.
Test condition: Vin = 1V, 1kHZ sine wave(Load: 8ohm) 1/8 Output Power Anti-ESD bell
Step transformer for
AC mains
AC100V AC110V±2%
3:Soak test with the condition above with 48 hours.
4. Check all the parameter within the spec.
AC220、230V
AC240V±2%
AC110V AC120V±2%
unit rated voltage variac voltage
AC240V AC250V±2%
2: Ageing test
Mulitimeter
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.
Ageing test step Equipment andTools
1: Equipment and Set up
1):Set the "RECORD" and "INPUT" knob to CD. "GAIN" set to 0dB position.
Volume set to Max.
8200P Ageing test step
8200P -Bias Procedure And Ageing test step-P1/1