Saturday, September 05, 2015

NAD C325BEE Stereo Amplifier Circuit Diagram

CONTINUOUS AVERAGE POWER 50 W (17 dBW) OUTPUT INTO 8 OHMS OR 4 OHMS
(Min. power per channel, 20 Hz – 20 kHz, with no more than rated distortion)
ALIGNMENTS
INITIAL
LOWEST VOLUME ADJUSTMENT
Tune the volume pot to lowest state.
Input a high voltage signal such as 5V from CD input.
Connect a oscilloscope to L channel binding posts.
Observing the oscilloscope, adjust VR301,make the output of speakers become to the  lowest level.
Adjusting VR302,make R channel output become to the lowest level by same way.
IDLING CURRENT
Level power on for a minimum of 5 minutes.
Connect a DC voltmeter toTP1 and TP2, adjust VR22 for 4mV reading on voltmeter.
Connect a DC voltmeter toTP3 and TP4, adjust VR12 for 4mV reading on voltmeter.
ISC CIRCUIT ORIGINAL ADJUSTING
Adjust the pot VR3 to make the DC voltage of the point of TP10 to the same as TP11
ALIGNMENT POINTS
CIRCUIT DIAGRAMS
CLICK ON THE PICTURES TO MAGNIFY