Marantz MAR775, MAR770, DR-6000 service manual Pin Configuration

Page 29

Pin Configuration

64 LDON

HFREF

1

HFIN

 

2

ISLICE

 

3

VSSA1

 

4

VDDA1

 

5

Iref

 

6

VRIN

 

7

D1

 

8

D2

 

9

D3

 

10

D4

 

11

63 V1

62 V5

61 V4

60 MOTO2

59 MOTO1

SSD3

 

DDD2(C)

 

SL

 

FO

 

RA

V

 

V

 

 

 

 

 

 

 

 

 

 

 

 

58

 

57

 

56

 

55

 

54

 

 

 

 

 

 

 

 

 

SAA7324

53 CFLG

52 VDDD1(P)

51 DOBM

50 VSSD2

49 CL11/4

48

 

SBSY

 

 

SFSY

47

 

 

 

SUB

46

 

 

 

RCK

45

 

 

 

TEST3

44

 

 

 

STATUS

43

 

 

 

SILD

42

 

 

 

RAB

41

 

 

 

SCL

40

 

 

 

SDA

39

 

 

 

 

 

38

 

RESET

 

Pin

Location

 

9

7022

FOC

12

7022

FOC

13

7022

RAD

16

7022

RAD

9

7021

SLE

12

7021

SLE

13

7021

TRAY-

16

7021

TRAY+

Figure 8-25

Value DC

5.8V ± 10%

5.8V

5.8V

5.8V

5.8V

5.8V

5.8V

5.8V

CL96532086_054.eps 080999

R1

12

R2

 

13

VSSA2

 

14

CROUT

 

15

CRIN

 

16

37

SCLI

 

SDI

36

 

WCLI

35

 

V2/V3

34

 

VSSD1

33

8.3.5 BA6856FP Turn Table Motor Driver (7020)

Description

This component is a 3 phase, full wave pseudo linear driving

system with inbuilt Hall Bias circuit and 3 phase parallel output.

VDDA2 17

LN 18

LP 19

Vneg 20

Vpos 21

RN 22

23

 

24

 

25

 

26

 

27

 

 

 

 

 

 

 

 

 

RP

SELPLL

TEST1

CL16

DATA

28

 

29

 

30

 

31

 

32

 

 

 

 

 

 

 

 

 

WCLK

SCLK

EF

TEST2

 

KILL

CL96532086_052.eps 080999

Measurements

Keep processor 7202 in reset by forcing pin 7 of connector

1208 to +5V. The outputs 9, 10, 11 of connector 1006 are 0V.

Pin 21 of the motor driver 7020 is 2.5V ±10%.

Pin 22 of the motor driver 7020 is 2.5V ±10%.

Pin 23 of the motor driver 7020 is 0V.

Figure 8-23

8.3.4TDA7073A Power Drivers (7021, 7022)

Description

The TDA7073A is a dual power driver circuit for servo systems with a single supply. In this configuration it is used to drive the sledge, tray, focus and radial.

Measurements

Keep microprocessor 7202 in reset by forcing pin 7 of connector 1208 to +5V. Connect the power supply as described above in "1.1.1. Supply Voltages". Check the following voltages :

Pin 19 of the motor driver 7020 is 5V ±10%.

Put the processor out of reset to continue the measurement.

Check MOT1 at pin 59 of CD10. The duty cycle of the output

should be 50%. Check wave form at pin 11 of 7005-D :

amplitude 5V + 5% duty cycle 50%.

The motor driver 7020 can be measured dynamically by

connecting a hall motor to the application panel. Apply a pulse

of 1V 10Hz and 15% duty cycle to pin 22 (Ec) as input value

with reference to pin 21 (Ecr=2.5V). Measure the output signals

on the driver. This will give as response a square wave on pin

17 and pin 18. When a positive voltage is applied, the square

wave on pin 17 will go ahead of the square wave on pin 18.

All signals will have a value as shown in the truth table. Check

the following output signals :

Pin

5

5

1

2

6

7

1

2

6

7

Location

7021

7022

7022

7022

7022

7022

7021

7021

7021

7021

Value

12V ± 10%

12V ± 10%

1.65V ± 10%

1.65V ± 10%

1.65V ± 10%

1.65V ± 10%

5.0± 10%

5.0± 10% 1.65V ± 10% 1.65V ± 10%

CL96532086_053.eps 080999

Figure 8-24

27

Image 29
Contents Service Manual Europe / Trading USABrazil AmericasPlayback & Recording and Disc This PCB contains the headphone socket CDR loader CDR main module CDL4009 or MAR770General Technical SpecificationsIII ESDService Hints Service Tools Status of player Dealer modeDealer diagnostics 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 Disc Loaded Wiring Power Supply Voltages Electrical Service DiagnosticsDisplay no CD RW+3V3 AT IC7000 Pins 5,17,21,57, Check Safety Resistors Check Flex Connection from CDR Main Board Power SupplyCD Module OPEN/CLOSECD Module Playback Description of display board Display BoardGeneral description Display controller TMP87C874FControl signals Clock signalTest instructions Supply voltagesEasy jog knob IR receiver remote controlRotary operation Push button operationClock Signal Display board troubleshooting guideControl Signals FTD Drive LinesDescription of P816 Power Supply Unit P816Description of controller MC44603 Pin connectionsVCC Pin function descriptionPin Name Operating description of MC44603 Block diagram of MC44603Start up sequence of P816 Regulation of P816Ch1 Drain voltage Ch2 Drain current Ch3 Gate voltage Circuit description of P816 CD Main Board Troubleshooting P816Measurements Block DiagramDescription Pin Configuration Ucoil Vcoil Wcoil Input conditions conn 1006 pin Outputs connTest points on driver Hallu Hallv HallwHF Path DC SettingsHfdet Setting Transfer CharacteristicsIIS CLK11 Nmute DAC Amplifier Pink Wiring Diagram10 D5V WC01at conn.1209 WC02at conn.1400 WY01at conn.F934of WY02 WY03 WY04 CDR main board12V CD W801at conn.1500CDR 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 PackingElectroly CAP Electrical Parts ListCeramic CAP P816-RESISTORS P816-POWER Circuit Board P816-CAPACITORSP816-SEMICONDUCTORS P816-MISCELLANEOUSPP16-RESISTOR PP16-REAR Panel Circuit Board PP16-CAPACITORSPP16-SEMICONDUCTORS PP16-MISCELLANEOUSPY36-ROTARY Encoder Circuit Board
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MAR770, MAR775, DR-6000 specifications

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