Nad M 3 Schematic
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Page 1
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SERVICE MANUAL
© NAD 2006
M3 C/AH
NAD ELECTRONICS INTERNATIONAL
TORONTO
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Page 2
BLOCK DIAGRAMS
1. POWER DISTRIBUTE DIAGRAM
L CHANNEL
INPUT RELAVS
ON PREAMP
L CHANNEL
OUTPUT RELAVS
ON L AMP
BALANCE AMP
ON EAL
gzov RECTIFv gov REGULATOR
3505 5506
ON PSU ON PSU
PRE AMP
ON PRE AMP
L CHANNEL HZV RECTIFv gzv REGULATOR
MAIN
TRANSFORMER ON PSU ON PSU
L CHANNEL
AMPLIFIER
HIGH CURRENT 0 L AMP
POWER SUPPLv .59 CIRCUIT
0 mm D603
5603 5504 ON PSU
ON PSU
LOGIC CIRCUIT
ON PREAMP
FUSE F902
AH: 5A 250v
C. 3,15A 350v MCU
5" if)???" LOGIC CIRCUIT
ON FPP
STANDBV RELAY FUSE F901 R-CORE
AC INLET fl) EMI FILTER STAND
100' 250V TRANSFORMER
12v RECTIFv 12VTRICGER
3902 ON EAL
POWER SWITCH FUSE F903
AH: 5A 250v
C (USA 350v
STANDIav
RELAv
ON PSU
HIGH CURRENT
POWER SUPPLv .59 CIRCUIT
RECT'F" D602 D603
5603 5504 ON PSU
0" PS L CHANNEL
AMPLIFIER
ON L AMP
R CHANNEL 272v RECTIFY {IZV REGULATOR
MAIN awe
TRANSFORMER ON FSU ON FSU
BALANCE AMP
ON EAL
220v RECTIFv gov REGULATOR
3605 5305
ON PSU ON PSU
PRE AMP
ON PRE AMP
L CHANNEL
INPUT RElAYS
ON PREAMP
L CHANNEL
OUTPUT RELAVS
ON L AMP
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