NAD C 720BEE - Block Diagram

TUNER R
FROM TUNER MODULE
INPUT SELECTION
CIRCUIT (BY RELAY)
DISC L DISC R
CD R
VIDEO R
AUX R
TAPE R TAPE L
AUX L
VIDEO L
CD L
IC 33
CD4094
IC31
NJU7313AL
CPU
CPU
ZONE 2 L
ZONE 2 R
PREAPM MODULE
AMP CIRCUIT
IN
˄˅
PREAMP MODULE
AMP CIRCUIT
OUT
˄˅
BASS
RT31
RT32
RT34
TREBLE
BALANCE
SW31
TONE DEFEAT
RT33
VOLUME
MUTE MUTE MUTE
Q310
Q31
Q32
SUB OUT
CONTROL
SUB OUT PRE-OUT L PRE-OUT R
MAIN IN R
MAIN IN L
SOFT CLIPPING
CONTROL CIRCUIT
S41
POWER AMP
CIRCUIT L CIRCUIT R
POWER AMP
IC 33
CD4094
PROTECTION
CIRCUIT
(IC44,UPC1237HA)
SPK B
SPK A
4 5
7
Q416
Q417
C1815 C1815
SPKA R
SPKB L SPKA L SPKB R
RL12/1
JQX-115F/0242HS4AF
RL12/2
JQX-115F/0242HS4AF
CPU
ISC CIRCUIT (IC43,TL082D)
TRIG I-V
MIRROR
SOURCE
SCR
CIRCUIT
2 3 4 5 7 8 21 22 24 25 26 27
(13,15,16)
(1,2,3)
(4,5,6,7,13,14)
11 12
VOL-
VOL+
VOLUME CONTROL CIRCUIT (REMOTE)
MUTE
CIRUIT
STANDBY (CPU)
JK41
AMBER LED
CONTROL CIRCUIT
R467
POSISTOR
(80 DEGREE C)
R439
POSISTOR
(90 DEGREE C)
BLOCK DIAGRAM
HEADPHONE
FROM TUNER MODULE
TUNER RTUNER L
CIRCUIT
CONTROL
CURRENT
CIRCUIT
CONTROL
CONTROL
- 9 -