Philips CDR570 Service Manual page 15

Service modes, repair tips and faultfinding trees
5.1.3 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"
(CDR775 "SW VERSION CD LOADER" )
CDR MAIN
BOARD TEST
Display : "DTST1"
DRAM test (7702)
PASS OR FAIL
Display : "DTST2"
FLASH CHECKSUM test (7703)
PASS OR FAIL
Display : "DTST3"
FLASH ERASE test (7703)
PASS OR FAIL
Display : "DTST4"
CODEC test (7406)
PASS OR FAIL
Display : "DTST5"
CDR LOADER
COMMUNICATION test
PASS OR FAIL
Display : "DTST6" *
CD LOADER
COMMUNICATION test
* FOR CDR775 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
ABORT TEST
Display shows current disc time
Press <F FWD>
ABORT TEST
Display shows current disc time
Press <F FWD>
DISPLAY TEST
Display segments blink at f=1kHz
KEYBOARD &
RC TEST
Display shows name of pressed keys
To end test, switch OFF unit
Figure 5-2
CDR 3rd gen. 5.
CDR LOADER TEST
CD-DA disc must be loaded
NO Display : "BERR1"
Test OK? or "NO CDDA"
"NO DISC"
or
YES
Press <F FWD>
CD LOADER TEST *
CD-DA disc must be loaded
* FOR CDR775 ONLY
NO Display : "BERR2"
Test OK?
or "NO CDDA"
or "NO DISC"
YES
Press <F FWD>
DISPLAY TEST
Press <F FWD>
KEYBOARD & RC TEST
CL 96532086_025.eps
GB 15
090300