Marantz MAR770, DR-6000, MAR775 service manual Faultfinding trees, CDR-Module

Page 12

7.Faultfinding trees

7.1CDR-Module

NO DISC LOADED

SWITCH ON POWER

NO

DISPLAY?

YES

CHECK:

MAINS, MAINS CABLE

POWER SUPPLY (SEE FAULT FINDING GUIDE PSU) WIRING

ON/OFF SWITCH FUSES VOLTAGES

DISPLAY (SEE FAULT FINDING GUIDE DISPLAY BOARD) WIRING

SUPPLY VOLTAGES

CLOCK SIGNAL 8MHz

CONTROL SIGNALS KEYBOARD STANDBY LED

ELECTRICAL SERVICE DIAGNOSTICS:

DISPLAY TEST, KEYBOARD TEST

DISPLAY:

NO

CHECK:

WIRING

"INSERT DISC"

YES

PRESS

<OPEN/CLOSE>

NO

TRAY?

YES

INSERT DISC

PRESS <OPEN/CLOSE>

NO

CD-DA DISC

LOADED?

YES

POWER SUPPLY VOLTAGES

ELECTRICAL SERVICE DIAGNOSTICS:

REPLACE CDR MODULE IF "DERRn"

OR "BERRn" ERROR OCCURS

CHECK:

DISPLAY BOARD (SEE FAULT FINDING GUIDE DISPLAY BOARD) WIRING

SUPPLY VOLTAGES

CLOCK SIGNAL 8MHz

CONTROL SIGNALS KEYBOARD

ELECTRICAL SERVICE DIAGNOSTICS: DISPLAY TEST, KEYBOARD TEST

MECHANICAL SERVICE DIAGNOSTICS:

REPLACE CDR MODULE IF ERROR OCCURS

			NO
CD-R DISC				CD-RW DISC
LOADED?				LOADED?
YES				YES

SEE CD-DA DISC FAULT FINDING

SEE CD-R DISC

FAULT FINDING

Figure 7-1

SEE CD-RW DISC FAULT FINDING

CL 96532076_016.eps 290799

10

Image 12

Contents

Service Manual USA Europe / TradingBrazil 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 diagnostics Status 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 Wiring Power Supply Voltages Electrical Service Diagnostics CD-RW Disc LoadedDisplay no CD RWCheck Flex Connection from CDR Main Board Power Supply +3V3 AT IC7000 Pins 5,17,21,57, Check Safety ResistorsCD Module OPEN/CLOSECD Module Playback Display Board Description of display boardGeneral description Display controller TMP87C874FClock signal Control signalsTest instructions Supply voltagesIR receiver remote control Easy jog knobRotary operation Push button operationDisplay board troubleshooting guide Clock SignalControl Signals FTD Drive LinesPower Supply Unit P816 Description of P816Description of controller MC44603 Pin connectionsPin function description Pin NameVCC Block diagram of MC44603 Operating description of MC44603Start up sequence of P816 Regulation of P816Ch1 Drain voltage Ch2 Drain current Ch3 Gate voltage Circuit description of P816 Troubleshooting P816 CD Main BoardBlock Diagram DescriptionMeasurements Pin Configuration Input conditions conn 1006 pin Outputs conn Ucoil Vcoil WcoilTest points on driver Hallu Hallv HallwDC Settings HF PathTransfer Characteristics Hfdet SettingIIS CLK11 Nmute DAC Amplifier Wiring Diagram PinkWY01at conn.F934of WY02 WY03 WY04 CDR main board 10 D5V WC01at conn.1209 WC02at conn.140012V CD 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-POWER Circuit Board P816-CAPACITORS P816-RESISTORSP816-SEMICONDUCTORS P816-MISCELLANEOUSPP16-REAR Panel Circuit Board PP16-CAPACITORS PP16-RESISTORPP16-SEMICONDUCTORS PP16-MISCELLANEOUSPY36-ROTARY Encoder Circuit Board

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