Philips CDR570, Service Manual

Page: 41 / 59

Faultfinding Trees GB 41 CDR570/930 7.
Figure 7-7
FINALISED CD-R DISC
LOADED
SET OK
CD-R DISC PARTIALLY
RECORDED OR EMPTY
START RECORDING
FROM DIGITAL
SOURCE
START MANUAL
RECORDING FROM
ANALOG SOURCE
CD-R DISC LOADED
LEVEL
ADJUSTABLE?
NO
YES
DIGITAL IN?
OPTICAL IN?
NO
YES
RECORDING
SUCCESSFUL?
NO
YES
NO
YES
DISPLAY:
“CD R” &
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
•
DISPLAY BOARD (SEE FAULT FINDING GUIDE DISPLAY BOARD)
⇒
EASY JOG KNOB
⇒
I2C COMMUNICATION
⇒
ELECTRICAL SERVICE DIAGNOSTICS:
KEYBOARD TEST
•
AUDIO CONNECTIONS & CABLES
CHECK:
IC7005, OPTICAL RECEIVER 6000
•
AUDIO CONNECTIONS & CABLES
•
I/O BOARD
⇒
FLEX CONNECTION
⇒
⇒
+5V (pin 8 conn. 1000)
•
ELECTRICAL SERVICE DIAGNOSTICS:
REPLACE CDR MODULE IF
"DERRn"
OR "BERRn" ERROR OCCURS
CHECK:
•
ELECTRICAL SERVICE DIAGNOSTICS:
REPLACE CDR MODULE IF
"DERRn"
OR "BERRn" ERROR OCCURS
CL 96532076_018.eps
290799
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