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Input

Interface

Timing

Control

Digital

Filter

Mode

Control

Noise

Shaper

5-Level DAC

Left

Low Pass Filter

Left

CMOS Amp

Left

5-Level DAC

Right

Low Pass Filter

Right

CMOS Amp

Right

1

2

3

4

6

8

10

12

5

7

9

11

13

14

LRCIN

DIN

BCKIN

CLKO

XTI

XTO

DGND

VDD

VCC2R

AGND2R

EXT1R

EXT2R

VOUTR

AGND1

28

27

26

25

23

21

19

17

24

22

20

18

16

15

ML/DSD

MC/DM2

MC/DM1

MUTE

MODE

CKSL

DGND

VDD

VCC2L 

AGND2L

EXT1L

EXT2L

VOUTL

VCC1

MAIN BOARD
U302: PCM1710U

28

Clock

input

X

IN

X

CIN

Sub-

clock

input

X

COUT

Sub-

clock

output

ø

29

Clock

input
X

OUT

Clock generating

circuit

Data bus

CPU

ROM

RAM

LCD display

RAM

(16 bytes)

LCD

drive control

circuit

A

25

Reset input

RESET

71

(5V)

Vcc

(0V)

Vss

30

78

V

L3

77

COM

0

76

COM

1

75

COM

2

74

COM

3

70

SEG

0

69

SEG

1

68

SEG

2

67

SEG

3

66

SEG

4

65

SEG

5

64

SEG

6

63

SEG

7

62

SEG

8

61

SEG

9

60

SEG

10

59

SEG

11

79

V

L2

80

V

L1

54

53

52

51

50

49

48

47

I/O port P0

P0(8)

46

45

44

43

42

41

40

39

I/O port P1

P1(8)

38

37

36

35

34

33

32

31

I/O port P2

Input port P3

P2(8)

Ke

y-on w

ak

e up

Real time por

t function

ø

INT

0

, INT

1

INT

2

, INT

3

ADT

RTP

0

, RTP

1

CNTR

0

, CNTR

1

T

OUT

X

COUT

X

CIN

58

57

56

55

P3(4)

SI/O(8)

24

23

22

21

20

19

18

17

I/O port P4

P4(8)

16

15

14

13

12

11

10

9

I/O port P5

P5(8)

A-D converter(8)

8

7

6

5

4

3

2

1

I/O port P6

I/O port P7

V

REF

AV

SS

(0V)

P6(8)

27

26

P7(2)

73

72

Time X(16)

Time Y(16)

Time 1(8)

Time 2(8)

Time 3(8)

X

Y

S

PC

L

PC

H

PS

MAIN BOARD
U401: M38223E4HP4

Summary of Contents for C 521BEE

Page 1: ...NAD C 521BEE COMPACT DISC PLAYER C 521BEE COMPACT DISC PLAYER SERVICE MANUAL...

Page 2: ...RFDC FE SE Q104 Q107 MOTOR DRIVER U201 BA6392 FOCUS TRACKING MOTOR DRIVER LOADING MOTOR LOADING MOTOR LIMIT SWITCH SPINDLE MOTOR SLED MOTOR PU IN LIMIT SWITCH PICK UP DISC M113 REMOTE SENSOR CD MECHA...

Page 3: ...J406 J407 J402 J404 J401 1723 006A 0000 8V 0V 0V 8V 15V 0V 15V ISSUE B M120C M505B M301 LIVE NEUTRAL M500A M102 16PIN M105 6PIN M505A CD MECHANISM TRANSFORMER BOARD DISPLAY BOARD LED BOARD KEY BOARD L...

Page 4: ...K R207 1K R208 1K R209 1K R210 1K R211 1K R212 100K R213 10K R214 8K2 R215 4R7 R216 0R R217 1K R218 15K R219 15K R220 100K R222 0R R223 33K R224 10K R225 100K R226 1M R227 100 R228 3K3 R229 3K3 R230 1...

Page 5: ...2X DISCO DI SW R327 4K7 R326 4K7 R325 4K7 R323 4K7 R322 4K7 R321 4K7 SQSO SENS C301 33p C302 33p C303 0 01u 1 2 3 Q308 8050 R329 4K7 R328 4K7 D303 IN4148 R338 10K R339 100K C308 10u 6 3V VCC C307 47u...

Page 6: ...3 1 U306A 5532 6 5 7 U306B 5532 8 4 U305C 5532 DGND R378 4K7 R382 4K7 R414 100K A 12V C375 22u 25V C377 224K R355 6K8 R359 6K8 C352 330p R363 1K5 R367 2K2 R371 2K2 C356 2700p C362 4700p C366 680p C368...

Page 7: ...0R C522 100u 16V ELD1 C502 104K C503 104K D501 1N4001 D502 1N4001 C506 2200u 25V Vin GND Vout 1 2 3 U502 7812 C504 104K D504 1N4001 D503 1N4001 C505 104K C507 2200u 25V C526 104K C512 1000u 16V C513 1...

Page 8: ...VC DVcc DVcc DVcc gm gm VC VC VOFST DVC DVC VC Vcc APC OFF Hi Z RW ROM H L Vcc 18 IC BLOCK DIAGRAM MAIN BOARD U101 CXA2581N 1 CH1OUTF 28 GND 2 F INTER FACE REV FWD R CH1OUTR 27 CH4OUTF 3 RCIN1 26 CH4O...

Page 9: ...GENERATOR PWM GENERATOR OPAmp Analog SW A D Converter Asymmtery Corrector Digital PLL Digital CLV CPU Interface XTSL XUGF GFS EMPH WFCK C2PO LRCK PCMD BCK SYSM TES1 TEST XRST RMUT LMUT XTAI XTAO AOUT1...

Page 10: ...display RAM 16 bytes LCD drive control circuit A 25 Reset input RESET 71 5V Vcc 0V Vss 30 78 VL3 77 COM0 76 COM1 75 COM2 74 COM3 70 SEG0 69 SEG1 68 SEG2 67 SEG3 66 SEG4 65 SEG5 64 SEG6 63 SEG7 62 SEG...

Page 11: ...9 8 MAIN BOARD U403 TC74HC00AP V0 GND V1 MAIN BOARD U503 UPC79M12HF AMPLIFIER 1 OUTPUT INVERTING INPUT NON INVERTING INPUT V AMPLIFIER 2 V OUTPUT INVERTING INPUT NON INVERTING INPUT 1 2 3 4 8 7 6 5 MA...

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