Philips CDR600/00/17 Service Manual page 38

GB 34 6.
6.3 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 (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 : "DTST6" *
CD LOADER
COMMUNICATION test
PASS OR FAIL
Tests OK?
YES
6.3.1 Description
The intention of the electrical service diagnostics is to show the
software versions present in the player and to direct the dealer
towards defective internal units. The units are : the CDR main
board, the CDR loader, the CD loader in case of a CDR775 and
the keyboard/display board. A sequence of tests is executed
automatically. Some of the tests can be aborted or skipped
without the result being taken into account. External tools or
disassembly of the unit is not necessary to get the diagnostic
information. Pressing keys [PLAY/PAUSE] and [F FWD]
simultaneously while switching on the unit, starts the test.
Switching off the unit ends the test.
CDR600 Diagnostic Software
ABORT TEST
Press <F FWD>
ABORT TEST
Press <F FWD>
ABORT TEST
Press <F FWD>
ABORT TEST
Press <F FWD>
ABORT TEST
* FOR CDR775 ONLY
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=1kHz
KEYBOARD &
RC TEST
KEYBOARD & RC TEST
Display shows name of pressed keys
To end test, switch OFF unit
Figure 6-2
6.3.2 Requirements to perform the test
• Working keyboard to start up the test.
• Working local display to check the output messages.
• A CD-DA disc with a minimum of 3 tracks in all trays to
perform the disc test.
6.3.3 Description of the tests
Player information
In this part of the test the following important information can be
checked without removing the cover :
• Recorder ID.
• SW-version back end of player.
• SW-version CDR loader.
• SW-version CD loader (only for CDR775).
NO Display : "BERR1"
Test OK? or "NO CDDA"
or "NO DISC"
YES
Press <F FWD>
* FOR CDR775 ONLY
NO Display : "BERR2"
Test OK? "NO CDDA"
or
or "NO DISC"
YES
Press <F FWD>
Press <F FWD>
CL 96532076_014.eps
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