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

7

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Marantz MAR770, DR-6000, MAR775 Electrical service diagnostics, Software versions, test for defective components

MAR770, MAR775, DR-6000 specifications

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