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APPENDIX 1
Equipment Required
Repair: Pozi PZ1 and PZ2 driver
10mm SOCKET (front PCB only)
M4 SOCKET drive 7.0 mm
2BA SOCKET drive
Re-alignment / re-test:
1. Signal Generator 10Hz to 40 kHz @ <0.001%THD (Burst tone for power measurements)
2. Audio analyser capable of measuring: dBu, Watts @ 4 ohms, THD% to 0.003% accuracy
(Recommend: Audio Precision AP1 or similar.)
3. Oscilloscope: 10MHz band width minimum
4. Dummy loudspeaker loads 4 ohm /2000W (Qty. 2)
5. Voltmeter: D.C. volts 1 to 100V
6. Suitable screwdriver/trimmer for POTs
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