Marantz MAR770, DR-6000, MAR775 service manual Playback & Recording and Disc

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1. Servicing the DR6050

1.1 INTRODUCTION:

The DR6050 is the consumer version of a CD recorder, this means that the SCMS (Serial Copy Management System) is included. The DR6050 can only record on the Audio CDRs (Consumer Use).

The DR6050 is suitable for recording and playback of CD-RW discs (CD-Re Writable disc).

Playback & Recording and Disc

Disc

 

 

CDR

 

 

CD-RW

 

 

 

 

 

 

 

 

 

 

 

 

 

CD

Consumer Disc

Professional Disc

Consumer Disc

Professional Disc

SCMS

 

 

Finalized

non

 

non

 

non

 

non

 

Player/Recorder

 

Finalized

Finalized

Finalized Finalized Finalized Finalized Finalized

 

Audio CD Player

P

P

no

P

no

no

no

no

no

-

Current products Ex:CD-17

 

 

 

 

 

 

 

 

 

 

Audio CD Player

P

P

no

P

no

P

no

P

no

-

CD-RW playback Ex:CD-17MK II

 

 

 

 

 

 

 

 

 

 

CD-RW Recorder

P

P

P/R

P

P/R

P/R

P/R

P/R

P/R

no

For Professional Ex:CDR630/640

 

 

 

 

 

 

 

 

 

 

CD-RW Recorder

P

P

P/R

P

P

P/R

P/R

P

P

YES

For Consumer Ex:DR6050

 

 

 

 

 

 

 

 

 

 

Consumer

: For Digital Audio

Professional

: For General use (Including PC)

P

: Playback

R

: Recording

1.2 OPENING THE PRODUCT :

The product can be opened by removing the top cover (6 screws). Once the product is opened one can have access to the several PCB's and the main module.

Power Supply

PCB

Terminal

PCB

CDR Module

MAR775

CD

Loder

VAL1250

DISPLAY

PCB

PHONE BOARD

Below the several PCB's and it function and service policy will be discussed:

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Contents Service Manual Americas USAEurope / Trading BrazilPlayback & Recording and Disc This PCB contains the headphone socket CDR loader CDR main module CDL4009 or MAR770General Technical SpecificationsIII ESDService Hints Service Tools Dealer mode Dealer diagnosticsStatus of player Software versions, test for defective components Electrical service diagnosticsMechanical service diagnostics Erasement of complete CD-RW DC-erase service modeCDR-Module Faultfinding treesCD-DA Disc Loaded CD R CD RW Wiring Power Supply Voltages Electrical Service DiagnosticsCD-RW Disc Loaded Display noOPEN/CLOSE Check Flex Connection from CDR Main Board Power Supply+3V3 AT IC7000 Pins 5,17,21,57, Check Safety Resistors CD ModuleCD Module Playback Display controller TMP87C874F Display BoardDescription of display board General descriptionSupply voltages Clock signalControl signals Test instructionsPush button operation IR receiver remote controlEasy jog knob Rotary operationFTD Drive Lines Display board troubleshooting guideClock Signal Control SignalsPin connections Power Supply Unit P816Description of P816 Description of controller MC44603Pin function description Pin NameVCC Regulation of P816 Block diagram of MC44603Operating description of MC44603 Start up sequence of P816Ch1 Drain voltage Ch2 Drain current Ch3 Gate voltage Circuit description of P816 CD Main Board Troubleshooting P816Block Diagram DescriptionMeasurements Pin Configuration Hallu Hallv Hallw Input conditions conn 1006 pin Outputs connUcoil Vcoil Wcoil Test points on driverHF Path DC SettingsHfdet Setting Transfer CharacteristicsIIS CLK11 Nmute DAC Amplifier Pink Wiring DiagramW801at conn.1500 WY01at conn.F934of WY02 WY03 WY04 CDR main board10 D5V WC01at conn.1209 WC02at conn.1400 12V CDCDR Main Board Block DiagramPY46 Schematic Diagram and Parts LocationQ810 Q801 Q891 Q871 Q825 Q861 Q862 Q851 Q892 Switching Power Supply PCB. P816QY01 QY02 QY04 QN54 QN53 QN58 QN57 Q311 Q681 QF52 QF51 QN52 QN51 QG56 QN55Exploded View and Parts List Not Standard Spear Parts PackingElectrical Parts List Ceramic CAPElectroly CAP P816-MISCELLANEOUS P816-POWER Circuit Board P816-CAPACITORSP816-RESISTORS P816-SEMICONDUCTORSPP16-MISCELLANEOUS PP16-REAR Panel Circuit Board PP16-CAPACITORSPP16-RESISTOR PP16-SEMICONDUCTORSPY36-ROTARY Encoder Circuit Board
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MAR770, MAR775, DR-6000 specifications

The Marantz DR-6050 and DR-6000 are revered components in the world of high-fidelity audio systems, reflecting the brand's long-standing commitment to quality and performance. These models have gained popularity among audiophiles for their comprehensive features and advanced technologies, which cater to both casual listeners and serious music enthusiasts.

The Marantz DR-6050 is a CD recorder and player that stands out with its dual functionality. It allows users to enjoy CDs while also having the capability to record directly from various sources, including analog inputs and digital connections. This functionality is essential for those who wish to preserve their vinyl records, cassettes, or other audio formats onto CD. The machine supports CD-R and CD-RW media, providing flexibility for repeated use and recording.

One of the standout technologies in the DR-6050 is its high-quality Digital-to-Analog Converter (DAC), which significantly enhances sound performance by converting digital signals to analog with incredible accuracy. This contributes to the unit's ability to reproduce audio with rich detail and clarity. Additionally, the recorder is equipped with a Microprocessor that ensures precise recording levels and optimizes the quality of the output.

On the other hand, the Marantz DR-6000 offers similar capabilities but with an emphasis on simplicity and ease of use. Designed for users who appreciate an intuitive interface, it features straightforward controls and an ergonomic design. The DR-6000 supports multiple recording formats, including standard audio CDs, making it versatile for various playback systems.

Both models are built with high-grade components that promise longevity and reliability. They feature robust construction, ensuring minimal vibration and interference to enhance playback quality. Integrated analog and digital inputs allow for diverse connectivity options, which is crucial for users with elaborate audio setups.

In terms of audio performance, both the DR-6050 and DR-6000 exhibit impressive frequency response and low distortion levels, characteristics that are vital for a satisfying listening experience. The devices also include features like playback speed control and disc finalization options, providing the user with complete control over their audio sessions.

The Marantz DR-6050 and DR-6000 are ultimate companions for those who appreciate high-quality sound and need versatile recording solutions. With their blend of advanced technologies, clear audio output, and user-friendly designs, they remain solid choices for anyone looking to enhance their audio collection and experience.
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