1-16
CDDA DISC FAULTFINDING GUIDE
PLAY BACK OF CDDA
DISCS OK
PRESS PLAY
CDDA DISC LOADED
AUDIO?
CHECK:CONNECTOR BOARD
OPTICAL TRANSMITTER 1521
SAFETY RESISTOR 3501
CHECK:CONNECTOR BOARD
FLEX CONNECTION TO CDR MODULE
DIGITAL OUT TRANSFORMER 5450
CHECK:HEADPHONE BOARD
WIRING
OP-AMP 7300
KILL TRANSISTORS 7301, 7302
CHECK:CONNECTOR BOARD
FLEX CONNECTION TO CDR MODULE
PLAY AUDIO SIGNALS DISC TRACK 15:
SIGNAL OF 5.4 VPP ON PINS 1 AND 5 OF CONN.
1500?
KILL VOLTAGE ON PIN 7 OF CONN. 15OO:
-8V DURING PLAY, +5V DURING STOP, PAUSE?
KILL TRANSISTORS 7501, 7502, 7503, 7504
NO
NO
NO
NO
NO
YES
YES
YES
YES
HEADPHONE?
DIGITAL OUT?
OPTICAL OUT?
NO
YES
DISTORTION?
DISPLAY SHOWS:
“CD”
T.O.C. INFO
SERVICE TEST MODE:
ELECTRICAL SERVICE DIAGNOSTICS:
REPLACE CDR MODULE IF ERROR OCCURS.
SERVICE TEST MODE:
ELECTRICAL SERVICE DIAGNOSTICS:
REPLACE CDR MODULE IF ERROR OCCURS.
Summary of Contents for 74 CDR630/02M
Page 3: ...1 1 1 1 TECHNICAL SPECIFICATIONS...
Page 5: ...1 3 1 3 SERVICE HINTS...
