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

Page 30

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

28

Image 30
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 mode Dealer diagnosticsStatus 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 function description Pin NameVCC 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 BoardBlock Diagram DescriptionMeasurements 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 PartsElectrical Parts List Ceramic CAPElectroly 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

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