NAD C541, Service Manual, Page: 7 / 32

7
BLOCK DIAGRAM
U401 LC866008 SYSTEM CONTROL CPU & VFL DISPLAY DRIVER
Q401- Q403
MUTE CIRCUIT
Q301-Q304 MUTE
J317 RCA JACK
U302 PCM1732
M318
RCA JACK
DIGITAL
OUTPUT
U402
NAD LINK
MICRO-
CONTROLLER
U403
74HC00 NAND GATE
NAD LINK
IN
M501
VFL DISPLAY
NAD LINK
OUT
M319
RCA JACK
41 43
44
48
11
64
15
9
13
12
10
9
8
11
63
57
58
1
16
19
24
47
1 2
16 13
3
42 44 43
23 24 14 13
35 36
33 34
39 40
65 67
2
4
3
6
56
L
R
L
R
CD AUDIO
O/P
10
11
30
31
5
6
35 34 39 40
44
43
1
63
62
U301
LC78621
DIGITAL
SIGNAL
PROCESSOR
15 27
16 29
2
10
5
10
6
11
20 25
21 26
3
18
13 28
U101 LA9240
ANALOG SIGNAL
PROCESSOR/SERVO
TOFF
TGL
CLV-
CLV+
EFM
U701 LB1641 MOTOR DRIVER
U201 LA6541 FOCUS & TRACKING MOTOR DRIVER
LOADING
MOTOR
LOADING MOTOR
LIMIT SWITCH
SPINDLE
MOTOR
SLED
MOTOR
PU-IN
LIMIT SWITCH
PICK
UP
DISC
KEYBOARD
M113
REMOTE
SENSOR
CD MECHANISM UNIT
POWER
TRANSFORMER
AC POWER I / P
M110
M109
REPEAT
M104
M111
M112
RANDOM
M106
M101
M103
M102
TIME
M108
Q101
DAC
U306
U305
4
U501,U507
DIGITAL
POWER
U502-3,U506
ANALOGUE
POWER
+8V
+5V
+12V
5V
-12V
D514-D517
RECTIFIER
DIODES
D501-D504
RECTIFIER
DIODES
D510-D511
ZENER DIODES
-22V
D506-D508 RECTIFIER
DIODES
U403
74HC00
NAND GATE
M303
EMC FILTER
L301
DIGITAL COIL
M500
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