Philips CDR779 - Page 52

Faultfinding trees
GB 52 CDR7797.
Figure 7-4
CD-RW DISC LOADED
START ERASING OF LAST RECORDED TRACK
SET OK
ERASING
SUCCESSFUL?
YES
NO
FINALISED CD-RW DISC
LOADED
CD-RW DISC PARTIALLY
RECORDED OR EMPTY
NO
YES
DISPLAY:
“CD RW” &
OPC INFO?
YES
DISC
DETECTION &
READING?
• ELECTRICAL SERVICE DIAGNOSTICS:
REPLACE CDR MODULE IF
"DERRn"
OR "BERRn" ERROR OCCURS
CHECK:
• DISC: DIRT, SCRATCHES, DAMAGED...
NO
• POWER SUPPLY VOLTAGES
• ELECTRICAL SERVICE DIAGNOSTICS:
REPLACE CDR MODULE IF
"DERRn"
OR "BERRn" ERROR OCCURS
CHECK:
• WIRING
NO
YES
DISPLAY:
“CD” &
T.O.C. INFO?
SEE CD-DA DISC
FAULT FINDING
CHECK:
• ELECTRICAL SERVICE DIAGNOSTICS:
REPLACE CDR MODULE IF
"DERRn"
OR "BERRn" ERROR OCCURS
•
IF DISC CORRUPTED TRY DC ERASE
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