NAD CI940, Service Manual, Page: 7 / 36

7
Input L
Input R
Output L
Output R
Cascade
Cascade
TRIGGER IN 12V
Relay
Power Supply Board(SMPS)
AC PLUG IN
5V/1A Standy circuit
meet 0.5W requirement
MCU
To MCU
LEDs Control circuit
Input L
Input R
Output L
Output R
Cascade
Cascade
Zone 1 IN
Zone 1 OUT
Zone 2 OUT
Zone 2 IN
FOUR CHANNELS SEPERATED POWER AMPLIFIERS
Audio sense circuit
Protection circuit
Zone
1
L
Zone
1 L
R
Zone
2
R
Zone
2
L
Fan Contril Circuit
H
eat
si
nk
1
H
eat
si
nk
2
+
-
+
-
ZONE 2
ZONE 2
RIGHT
LEFT
BR
ID
G
E
+
-
+
-
ZONE 1
ZONE 1
RIGHT
LEFT
BR
ID
G
E
+45V/4A -45V/4A
5V
S
Relay
To MCU
NAD CI940 BLOCK DIAGRAM
VERSION: V1.0
Drafted by: BEN
Data: 2014-2-25
BLOCK DIAGRAM
S2
ST
B
FRO
M
M
C
U