NAD C 542 service manual U201 CXD3017Q

Page 20

MAIN BOARD

U201: CXD3017Q

XTSL

XUGF

GFS

EMPH

WFCK

C2PO

LRCK

PCMD

BCK

37

16

18

64

15

19

61

62

63

 

 

Clock

 

Error

 

 

Generator

 

Corrector

RFAC

51

 

EFM

D/A

 

demodurator

 

Interface

ASYI

49

 

 

 

 

 

ASYO 48

Asymmtery

 

 

BIAS

50

Corrector

 

 

 

 

16K

 

 

 

 

XPCK 17

 

 

RAM

 

 

 

FILO

54

Digital

Sub Code

Digital

FILI

55

Processor

OUT

PLL

 

 

PCO 56

 

 

 

 

 

CLTV 53

 

 

 

MDP

26

Digital

 

 

 

 

 

 

LOCK 25

CLV

 

 

SENS

8

 

 

 

DATA

5

 

 

 

XLAT

6

CPU

Servo

 

CLOK

7

 

Auto

 

Interface

 

SPOA 12

Sequencer

 

 

 

 

 

 

SPOB 13

 

 

 

XLON 14

 

 

 

SCOR 20

 

 

 

SQSO

1

 

 

 

SQCK

2

Signal Processor Block

 

 

 

 

 

 

Servo Block

 

 

 

 

 

 

SERVO

 

 

 

 

Interface

 

 

 

 

MIRR

RFDC

43

 

 

DFCT

 

 

FOK

 

 

 

 

CE 42

 

 

 

TE 41

 

 

SERVO DSP

SE

40

OPAmp

A/D

FOCUS SERVO

Analog SW Converter

FE 39

 

 

 

TRACKING

VC

38

 

 

 

 

SERVO

 

 

 

 

IGEN 46

 

 

 

 

 

 

 

SLED SERVO

 

 

 

44

 

 

 

 

ADIO

 

4 SYSM

DAC Block

36 TES1

35 TEST

3 XRST

Serial-In 79 RMUT

Interface 80 LMUT

Over sampling

 

Timing

 

 

 

66

XTAI

 

 

 

 

Digital Filter

 

Logic

 

 

 

67

XTAO

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3rd-Order

 

 

 

 

 

Noise Shaper

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PWM

 

 

PWM

 

 

 

 

+ -

+ -

 

 

70

AOUT1

+ -

+ -

AIN1

 

71

 

72

LOUT1

 

77

AOUT2

 

76

AIN2

 

75

LOUT2

 

60

DOUT

9 SCLK

21 COUT 27 SSTP 11 ATSK 22 MIRR 23 DFCT 24 FOK

PWM GENERATOR

32

FFDR

FOCUS PWM

 

 

GENERATOR

33 FRDR

TRACKING PWM

30 TFDR

GENERATOR

31

TRDR

 

SLED PWM

28

SFDR

GENERATOR

29

SRDR

 

- 20 -

Image 20
Contents 542 Safety Information Class Laser ProductService Safety Precautions ContentsControls SpecificationsPhysical Specifications Front Panel Rear Panel / Front PanelRear Panel Disassembly Instructions Refer to Figure No.1Block Diagram KeyboardWiring Diagram RF Pattern Testing NAD C 542 PCB Testing Points Diagram Testing ProcedureInstruction for Handling Optical System Block PICK-UP Precautions for Checking Beam EmissionImportant Notes Precautions When Changing Laser PICK-UP PCB Layout Display Board KEY Board Live Board LED BoardMain Board Schematic Diagram MCUDisplay GND1RF AMP DAC AgndOWE R IC Block Diagram U101 CXA2581NU202 BA6392FP U403 TC74HC00APU201 CXD3017Q U301 M38B57MC P64/INT4/SBUSY1/AN10U501, U506, U507 U302 PCM1732Main Board U402 Nadlink Masked Troubleshooting Guide Oscillating ? M101 SWITCH, DefectiveElectrical Parts List Reference No DescriptionLED CapacitorWAFER/CONNECTOR CoilJack CrystalScrew RelayDiode Diode 1N4148 ATTransistor HeatsinkMechanism Exploded View WSL-2130CCMMechanism Exploded View Parts List QtyExploded View Exploded View Parts List Screw M3X6 Packing Diagram Description ’TYNAD
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Manual 44 pages 20.25 Kb

C 542 specifications

The NAD C 542 is a high-quality CD player that epitomizes NAD's commitment to delivering superior audio performance through innovative design and advanced technology. Designed for audiophiles and music enthusiasts alike, the C 542 stands out with its meticulous attention to detail, providing a rich listening experience that brings out the best in your CD collections.

One of the main features of the NAD C 542 is its high-performance digital-to-analog converter (DAC). The unit employs state-of-the-art circuitry that ensures accurate signal conversion, resulting in a dynamic range that captures the nuances of music more effectively. This allows listeners to experience depth and clarity in their audio that other CD players may not deliver.

The C 542 also incorporates NAD's proprietary technology known as "NAD's proprietary disc reading system." This feature enhances the player’s ability to read discs with precision, reducing errors that can arise from scratches or dirt. The result is more reliable playback and a seamless listening experience, even with older CDs that may have seen better days.

Another notable characteristic of the NAD C 542 is its ability to handle various disc formats. In addition to standard audio CDs, the player is compatible with CD-R and CD-RW formats, giving users the flexibility to enjoy their custom mixes. The C 542 also supports MP3 playback, allowing users to enjoy their digital music collections directly from discs.

The front panel of the C 542 is thoughtfully arranged for ease of use, featuring a bright display that provides essential information about track number, elapsed time, and disc status. Users can easily navigate through their tracks with a responsive remote control, which enhances usability and makes listening more enjoyable.

In terms of build quality, the NAD C 542 boasts a solid construction, which minimizes vibrations that can affect sound quality. This attention to detail in the physical design reinforces NAD's philosophy of creating products that perform exceptionally well while remaining durable over time.

In summary, the NAD C 542 is an exceptional CD player that combines advanced technologies, user-friendly features, and robust build quality. With its impressive DAC, proprietary reading system, and compatibility with multiple disc formats, it caters to the needs of discerning listeners who demand high fidelity and reliability in their audio equipment. Whether you are revisiting classic albums or enjoying modern recordings, the C 542 truly enhances your listening experience.