Alignment Procedures - NAD C 320BEE Service Manual

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ALIGNMENT PROCEDURES

I. INITIAL ADJUSTMENT (No load connected)
A. OUTPUT OFFSET VOLTAGE
1. Connect a DC Millivoltmeter to L Channel speaker output terminals.
2. Turn unit ON and adjust VR21 (100 ohms) to get the reading of 0V+/-30mV.
3. Connect the DC Millivoltmeter to R Channel speaker output terminals and adjust
VR11 (100ohms) to get a reading of 0V+/-30mV.
B. IDLING CURRENT
1. Connect a DC Millivoltmeter to TP1 and TP2 and adjust VR12 (300 ohms) for
2. Connect the DC Millivoltmeter to TP3 and TP4 and adjust VR22 (300 ohms) for
3. Leave power on for a minimum of 5 minutes.
II. FINAL ADJUSTMENT
Repeat procedure A and B for offset voltage and idling current alignment respectively.
3-5mV reading on meter.
3-5mV reading on meter.
TP4
VR22
VR21
TP3
TP2
VR11
TP1
VR12
Digitized in Heiloo the Netherlands
11/24/2018
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