Marantz MAR770 Electrical service diagnostics, Software versions, test for defective components

Page 9

6.3Electrical service diagnostics

ELECTRICAL SERVICE DIAGNOSTICS

(software versions, test for defective components)

If power ON,

switch power OFF

Load CD-DA disc (SBC444A)

Press <PLAY> + <F FWD> simultaneously and switch ON unit

PLAYER

INFORMATION

Display :

"PLAYER ID"

"SW VERSION BACK END" "SW VERSION CDR LOADER"

(CDR775 "SW VERSION CD LOADER")

CDR MAIN

LOADER TESTS

ABORT TEST

CDR LOADER TEST

CD-DA disc must be loaded

 

Display shows current disc time

 

 

 

 

 

 

 

 

 

BOARD TEST

Display : "DTST1"

ABORT TEST

DRAM test (7702)

 

 

 

 

 

 

 

 

PASS OR FAIL

 

 

Press <F FWD>

 

 

 

 

 

 

 

 

Display : "DTST2"

 

 

 

ABORT TEST

FLASH CHECKSUM test (7702)

 

 

 

 

 

 

 

PASS OR FAIL

 

 

 

 

 

 

Press <F FWD>

 

 

 

 

 

 

 

 

Display : "DTST3"

 

 

 

 

 

 

FLASH ERASE test (7702)

 

 

 

Press <F FWD>

ABORT TEST

 

NO

Display :

"BERR1"

Test OK?

 

 

or

"NO CDDA"

 

 

 

 

 

or

"NO DISC"

 

 

 

 

 

 

 

YES

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Press <F FWD>

CD LOADER TEST *

 

 

 

 

 

CD-DA disc must be loaded

 

 

 

 

 

Display shows current disc time

 

 

 

 

 

 

 

 

 

 

 

* FOR CDR775 ONLY

 

 

 

 

 

 

 

 

 

PASS OR FAIL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Display : "DTST4"

 

 

 

 

 

 

 

 

 

 

CODEC test (7702)

 

 

ABORT TEST

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PASS OR FAIL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Press <F FWD>

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Display : "DTST5"

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CDR LOADER

 

 

 

 

ABORT TEST

COMMUNICATION test

 

 

 

 

 

 

 

 

 

 

 

 

 

PASS OR FAIL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Press <F FWD>

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Display : "DTST6" *

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CD LOADER

 

 

 

 

ABORT TEST

COMMUNICATION test

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PASS OR FAIL

 

* FOR CDR775 ONLY

 

 

 

 

 

 

 

Press <F FWD>

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NO

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Tests OK?

 

 

Display :

"DERRn"

 

 

 

 

 

 

 

 

 

YES

 

 

 

 

n = failed test

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Display next

 

 

 

 

 

 

 

 

failed test

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NO

 

Display :

"BERR2"

Press <F FWD>

Test OK?

 

 

or

"NO CDDA"

 

 

YES

 

or

"NO DISC"

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DISPLAY TEST

Press <F FWD>

DISPLAY TEST

Display segments blink at f=1kHz

 

 

 

KEYBOARD &

Press <F FWD>

RC TEST

 

 

KEYBOARD & RC TEST

Display shows name of pressed keys

To end test, switch OFF unit

CL 96532086_025.eps 080999

Figure 6-2

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Contents
Service Manual Europe / Trading USABrazil AmericasPlayback & Recording and Disc This PCB contains the headphone socket CDR loader CDR main module CDL4009 or MAR770 General Technical SpecificationsIII ESDService Hints Service Tools Dealer mode Dealer diagnosticsStatus of player 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 connectionsPin function description Pin NameVCC 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 P816Block Diagram DescriptionMeasurements 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 PackingElectrical Parts List Ceramic CAPElectroly 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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