Marantz DR-6000, MAR770, MAR775 service manual Mechanical service diagnostics

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6.3.1Description

The intention of the electrical service diagnostics is to show the software versions present in the player and to direct the dealer towards defective internal units. The units are : the CDR main board, the CDR loader, the CD loader in case of a DR6050 and the keyboard/display board. A sequence of tests is executed automatically. Some of the tests can be aborted or skipped without the result being taken into account. External tools or disassembly of the unit is not necessary to get the diagnostic information. Pressing keys [PLAY/PAUSE] and [F FWD] simultaneously while switching on the unit, starts the test. Switching off the unit ends the test.

6.3.2Requirements to perform the test

Working keyboard to start up the test.

Working local display to check the output messages. A CD-DA disc with a minimum of 3 tracks in all trays to perform the disc test.

6.3.3Description of the tests

Player information

In this part of the test the following important information can be checked without removing the cover :

Recorder ID.

SW-version back end of player. SW-version CDR loader.

SW-version CD loader (only for DR6050).

CDR main board test

[F FWD] key. The message "DERRn" will be displayed with n indicating the faulty test number.

If one of the tests is aborted with the [F FWD] key, no error message will be displayed for this test. The flash data erase test ("DTST3") can not be aborted !

The CDR main board test consists out of :

DRAM test

Display : "DTST1". The DRAM used for buffer management is tested by writing, reading and verifying test patterns.

disc test is executed to check focus control, disc motor control, radial control and jump grooves control. The disc test is performed by audio play-back of 5 seconds at the beginning, middle and end of the disc.

CDR loader test

During the test, the current disc time is shown. In case of an error the message "BERR1" will be displayed and the [F FWD] key must be pressed to continue with the following test. Pressing the [F FWD] key also aborts this test.

CD loader test

For DR6050 only. During the test, the current disc time is shown. In case of an error the message "BERR2" will be displayed and the [F FWD] key must be pressed to continue with the following test. Pressing the [F FWD] key also aborts this test.

Display test

All segments will blink at a frequency of 1 Hz. Pressing the [F FWD] key will start the next test because the user has to check for himself if all segments work properly.

Keyboard and remote control tests

The test will give the user the ability to test every key without executing the function assigned to it. Therefore, the user needs to press every key on the keyboard and the remote control. The display will show the name of the key being pressed. Pressing more than one key at once will give an unpredictable result except for the service combinations : [PLAY/PAUSE] + [STOP], [PLAY/PAUSE] + [F FWD], [F FWD] + [REWIND], [ERASE] + [RECORD], [PLAY/PAUSE] + [RECORD].

6.4Mechanical service diagnostics

MECHANICAL SERVICE DIAGNOSTICS

(test for defective components)

If power ON,

switch power OFF

Flash checksum test

Display : "DTST2". This test checks the checksum of the player's SW stored in the flash.

Flash data erase

Display : "DTST3". During this test, all temporary information (CDtxt) in the flash is erased.

CODEC (ADC/DAC) test

Display : "DTST4". This test checks the CODEC IC by writing, reading and verifying test patterns. The test is not applicable for CDR950.

CDR communication test

Display : "DTST5". The communication between the host processor (DASP) and the CDR loader via the DSA-R-bus is tested.

Press <PLAY/PAUSE> + <STOP>

simultaneously and switch

ON unit

 

 

 

 

 

 

<OPEN>

 

FOCUS TEST

 

 

 

 

 

Display shows “BUSY”

 

 

 

<CLOSE>

 

Visual inspection

 

 

 

 

 

 

 

 

 

 

 

 

 

<REWIND>

<FWD>

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SLEDGE TEST

Visual inspection

Display shows “BUSY”

To end test, switch OFF unit

Figure 6-3

6.4.1Description

TRAY TEST

Visual inspection

Display shows “OPENED”

even if tray is blocked

CL96532086_026.eps 080999

CD communication test

Display : "DTST6"). The communication between the host processor (DASP) and the CD loader is tested. The test is only applicable for DR6050.

Loader tests

These tests determine if the CDR loader and the CD loader in case of a DR6050 w ork correctly. A CD-DA disc with a minimum of 3 tracks needs to be inserted in both loaders. A

No external tools are required to perform this test. The cover needs to be removed because the user has to check the movements of the tray, focus and sledge visually. Pressing keys [PLAY/PAUSE] and [STOP] simultaneously while switching on the unit, starts the test. Switching off the unit ends the test. In case of a DR6050, one can check the CD loader mechanics in the same way by pressing the above key combination on the CD player keys.

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Contents Service Manual Brazil USAEurope / Trading AmericasPlayback & Recording and Disc CDR loader CDR main module CDL4009 or MAR770 This PCB contains the headphone socketTechnical Specifications GeneralESD IIIService Hints Service Tools Dealer diagnostics Dealer modeStatus of player Electrical service diagnostics Software versions, test for defective componentsMechanical service diagnostics DC-erase service mode Erasement of complete CD-RWFaultfinding trees CDR-ModuleCD-DA Disc Loaded CD R Display no Wiring Power Supply Voltages Electrical Service DiagnosticsCD-RW Disc Loaded CD RWCD Module Check Flex Connection from CDR Main Board Power Supply+3V3 AT IC7000 Pins 5,17,21,57, Check Safety Resistors OPEN/CLOSECD Module Playback General description Display BoardDescription of display board Display controller TMP87C874FTest instructions Clock signalControl signals Supply voltagesRotary operation IR receiver remote controlEasy jog knob Push button operationControl Signals Display board troubleshooting guideClock Signal FTD Drive LinesDescription of controller MC44603 Power Supply Unit P816Description of P816 Pin connectionsPin Name Pin function descriptionVCC Start up sequence of P816 Block diagram of MC44603Operating description of MC44603 Regulation of P816Ch1 Drain voltage Ch2 Drain current Ch3 Gate voltage Circuit description of P816 Troubleshooting P816 CD Main BoardDescription Block DiagramMeasurements Pin Configuration Test points on driver Input conditions conn 1006 pin Outputs connUcoil Vcoil Wcoil Hallu Hallv HallwDC Settings HF PathTransfer Characteristics Hfdet SettingIIS CLK11 Nmute DAC Amplifier Wiring Diagram Pink12V CD WY01at conn.F934of WY02 WY03 WY04 CDR main board10 D5V WC01at conn.1209 WC02at conn.1400 W801at conn.1500Block Diagram CDR Main BoardSchematic Diagram and Parts Location PY46Switching Power Supply PCB. P816 Q810 Q801 Q891 Q871 Q825 Q861 Q862 Q851 Q892QN54 QN53 QN58 QN57 Q311 Q681 QF52 QF51 QN52 QN51 QG56 QN55 QY01 QY02 QY04Exploded View and Parts List Packing Not Standard Spear PartsCeramic CAP Electrical Parts ListElectroly CAP P816-SEMICONDUCTORS P816-POWER Circuit Board P816-CAPACITORSP816-RESISTORS P816-MISCELLANEOUSPP16-SEMICONDUCTORS PP16-REAR Panel Circuit Board PP16-CAPACITORSPP16-RESISTOR PP16-MISCELLANEOUSPY36-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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