Marantz MAR770 Input conditions conn 1006 pin Outputs conn, Ucoil Vcoil Wcoil, Hallu Hallv Hallw

Models: MAR770 MAR775 DR-6000

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Motor controller truth table

 

Input conditions conn 1006 pin

 

6

8

4

7

3

2

U+

U-

V+

V-

W+

W-

L

M

H

M

M

M

H

M

L

M

M

M

M

M

L

M

H

M

M

M

H

M

L

M

H

M

M

M

L

M

L

M

M

M

H

M

 

Outputs conn 1006

9

 

10

11

UCOIL

 

VCOIL

WCOIL

6V

 

0V

0V

0V

 

6V

6V

0V

 

6V

0V

6V

 

0V

6V

0V

 

0V

6V

6V

 

6V

0V

Figure 8-26

 

Test points on driver

18

 

17

16

HALL_U

 

HALL_V

HALL_W

0V

 

5V

 

5V

 

0V

 

 

 

0V

5V

 

 

5V

0V

5V

 

 

0V

0V

 

 

5V

CL96532086_055.eps 080999

Hall-elements input signal voltage levels

Input voltage

Level

Tolerance

Unit

H

2.8

0.1

V

M

2.5

0.1

V

L

2.2

0.1

V

CL96532086_056.eps 080999

Figure 8-27

8.3.6Tray Control

Description

The tray control consists of a TDA7073A power driver (7021) controlled by the processor 7202 via pin 19 TRAYIN and pin 20 TRAYOUT. If pin 20 is low and pin 19 high, the TRAY+ signal at pin 16 of 7021 is forced to +8V and the TRAY- signal at pin 13 of 7021 to GND : the tray will open. If pin 20 is high and pin 19 low, TRAY+ becomes GND and TRAY- becomes +8V : the tray will close. If pin 19 and 20 of the processor have the same value, TRAY+ and TRAY- will have the same value as well : the tray stops moving.

Measurements

Keep procesor 7202 in reset by forcing pin 7 of connector 1208 to +5V. Connect a load of 15 , 7W between pin 3 and 4 of connector 1002. Check the voltage over the load with TRAY+ (pin 3) as positive reference. Check also the levels of pins 19 and 20 of the processor.

UTRAY+,TRAY- = <100mV Pin 20 = +5V

Pin 19 = +5V

Force pin 20 of the processor to ground, and check the voltages.

U TRAY+,TRAY- = -6.5V( 10% Pin 20 = +0V

Pin 19 = +5V

Force pin 19 of the processor to ground as well and check the levels again.

U TRAY+,TRAY- = <100mV Pin 20 = +0V

Pin 19 = +0V

Release pin 20 of the processor and check the levels. U TRAY+,TRAY- = 6.5V( 10%

Pin 20 = +5V Pin 19 = +0V

Release pin 19 of the processor and check the levels again: U TRAY+,TRAY- = <100mV

Pin 20 = +5V Pin 19 = +5V

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Marantz MAR770 Input conditions conn 1006 pin Outputs conn, Ucoil Vcoil Wcoil, Test points on driver, Hallu Hallv Hallw

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.