NAD C 521i Service Manual page 19

MAIN BOARD
U301: CXD3017Q
Generator
RFAC 51
ASYI 49
Asymmtery
ASYO 48
Corrector
BIAS
50
XPCK 17
FILO 54
FILI 55
PCO 56
CLTV 53
26
MDP
25
LOCK
SENS 8
DATA 5
XLAT 6
7
CLOK
Interface
SPOA 12
13
SPOB
14
XLON
SCOR 20
SQSO 1
SQCK 2
Signal Processor Block
Servo Block
RFDC 43
CE 42
TE 41
SE 40
Analog SW
FE 39
VC 38
IGEN 46
Clock
Corrector
EFM
demodurator
Sub Code
Digital
Processor
PLL
Digital
CLV
Servo
CPU
Auto
Sequencer
OPAmp A/D
Converter
Error
D/A
Interface
16K
RAM
Digital
OUT
SERVO
Interface
MIRR
DFCT
FOK
SERVO DSP PWM GENERATOR
FOCUS SERVO
TRACKING
SERVO
SLED SERVO
23
DAC Block
Serial-In
Interface
Over sampling Timing
Digital Filter Logic
3rd-Order
Noise Shaper
PWM PWM
FOCUS PWM
GENERATOR
TRACKING PWM
GENERATOR
SLED PWM
GENERATOR
36 TES1
35 TEST
3
XRST
79 RMUT
80
LMUT
66 XTAI
67 XTAO
70
AOUT1
71 AIN1
72 LOUT1
77
AOUT2
76 AIN2
75 LOUT2
60
DOUT
9
SCLK
21
COUT
27 SSTP
11
ATSK
22
MIRR
23
DFCT
24 FOK
32
FFDR
33
FRDR
30
TFDR
31
TRDR
28
SFDR
29 SRDR