Diagnostic Software - Marantz CDR631 Service Manual

5. Diagnostic Software

5.1 Electrical 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"
(DR6050 "SW VERSION CD LOADER" )
CDR MAIN
BOARD TEST
Display : "DTST1"
DRAM test (7702)
PASS OR FAIL
Display : "DTST2"
FLASH CHECKSUM test (7702)
PASS OR FAIL
Display : "DTST3"
FLASH ERASE test (7702)
PASS OR FAIL
Display : "DTST4" *
CODEC test (7702)
PASS OR FAIL
Display : "DTST5"
CDR LOADER
COMMUNICATION test
PASS OR FAIL
Display : "DTST5" *
CD LOADER
COMMUNICATION test
* FOR C DR500 ONLY
PASS OR FAIL
Tests OK?
YES
ABORT TEST
Press <F FWD>
ABORT TEST
Press <F FWD>
ABORT TEST
Press <F FWD>
ABORT TEST
Press <F FWD>
ABORT TEST
Press <F FWD>
NO
Display : "DERRn"
n = failed test
Display next
failed test
LOADER TESTS
CDR LOADER TEST
ABORT TEST
CD-DA disc must be loaded
Display shows current disc time
Press <F FWD>
CD LOADER TEST *
CD-DA disc must be loaded
ABORT TEST
Display shows current disc time
Press <F FWD>
DISPLAY TEST
DISPLAY TEST
Display segments blink at f=1Hz
KEYBOARD &
RC TEST
KEYBOARD & RC TEST
Display shows name of pressed keys
To end test, switch OFF unit
Figure 5-1
6
NO Display : "BERR1"
Test OK? "NO CDDA"
or
or "NO DISC"
YES
Press <F FWD>
* FOR C DR500 ONLY
NO Display : "BERR2"
Test OK?
or "NO CDDA"
"NO DISC"
or
YES
Press <F FWD>
Press <F FWD>