NAD C 542 service manual Precautions When Changing Laser PICK-UP

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PRECAUTIONS WHEN CHANGING LASER PICK-UP

When removing the pick-up assembly, short circuit the PCB tracks on the optical block as show in the drawing in order to protect the pick-up before removal.

NOTE: Replacement pick-up assemblies are supplied with the PCB pattern already protected.

DO NOT REMOVE THE SHORT CIRCUITS UNTIL YOU HAVE FINISHED FITTING THE PICK-UP.

Protective soldering place for laser diode

Caution:

Laser diodes are extremely susceptible to damage from static electricity. Even if a static discharge does not ruin the diode, it can shorten its life or cause it to work improperly. When replacing the pick-up, use a conductive mat, a grounded soldering iron, and so on, to protect the laser diode from static damage.

Ground Conductive

Wrist Band for Body

Soldering

Ground Line

Iron with

Ground

Less than

wire

10 ohm

Conductive Gum Mat

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Contents 542 Class Laser Product Safety InformationContents Service Safety PrecautionsControls SpecificationsPhysical Specifications Front Panel Rear Panel / Front PanelRear Panel Refer to Figure No.1 Disassembly InstructionsKeyboard Block DiagramWiring Diagram NAD C 542 PCB Testing Points Diagram Testing Procedure RF Pattern TestingInstruction for Handling Optical System Block PICK-UP Precautions for Checking Beam EmissionImportant Notes Precautions When Changing Laser PICK-UP Display Board KEY Board Live Board LED Board PCB LayoutMain Board MCU Schematic DiagramGND1 DisplayRF AMP Agnd DACOWE R U403 TC74HC00AP IC Block DiagramU101 CXA2581N U202 BA6392FPU201 CXD3017Q P64/INT4/SBUSY1/AN10 U301 M38B57MCU501, U506, U507 U302 PCM1732Main Board U402 Nadlink Masked Oscillating ? M101 SWITCH, Defective Troubleshooting GuideReference No Description Electrical Parts ListCapacitor LEDCoil WAFER/CONNECTORRelay JackCrystal ScrewDiode 1N4148 AT DiodeHeatsink TransistorWSL-2130CCM Mechanism Exploded ViewQty Mechanism Exploded View Parts ListExploded View Exploded View Parts List Screw M3X6 Description ’TY Packing DiagramNAD
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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.