Marantz CDR500 F1B Service Manual page 13

CD-DA DISC LOADED
NO
DISC
DETECTION &
READING?
YES
NO
DISPLAY:
"CD" &
T.O.C. INFO?
YES
PRESS <PLAY>
ANALOG NO
AUDIO
OUT?
YES
YES
DISTORTION?
NO
NO
HEADPHONE?
YES
DIGITAL NO
AUDIO
OUT?
YES
PLAY BACK OF CD-DA
DISCS OK
CHECK:
WIRING
POWER SUPPLY VOLTAGES
ELECTRICAL SERVICE DIAGNOSTICS:
REPLACE CDR MODULE IF "DERRn"
OR "BERRn" ERROR OCCURS
CHECK:
DISC: DIRT, SCRATCHES, DAMAGED...
ELECTRICAL SERVICE DIAGNOSTICS:
REPLACE CDR MODULE IF "DERRn"
OR "BERRn" ERROR OCCURS
CHECK:
AUDIO CONNECTIONS & CABLES
Terminal BOARD
FLEX CONNECTION
+5V (pin 4 conn. W855)
MUTE VOLTAGE (pin 7 conn. J601):
-3V DURING PLAY
KILL TRANSISTORS QN51 - QN54
PLAY AUDIO SIGNALS DISC TRACK 15:
SIGNAL OF 5.6 VPP ON PINS 1 AND 3 OF CONN.
J601
ELECTRICAL SERVICE DIAGNOSTICS:
REPLACE CDR MODULE IF "DERRn"
OR "BERRn" ERROR OCCURS
CHECK:
AUDIO CONNECTIONS & CABLES
Terminal BOARD
CONNECTION
+5V (pin 3 conn. W855)
ELECTRICAL SERVICE DIAGNOSTICS:
REPLACE CDR MODULE IF "DERRn"
OR "BERRn" ERROR OCCURS
CHECK:
CONNECTION OF HEADPHONE BOARD
HEADPHONE BOARD
WIRE CONNECTION
+8V (pin 5 conn. W903), -8V (pin 2 conn. W903)
KILL TRANSISTOR, C911, C912
PLAY SBC442 DISC (1kHz, -30dB) AND
CHECK SIGNAL AT Q901
ELECTRICAL SERVICE DIAGNOSTICS:
REPLACE CDR MODULE IF "DERRn"
OR "BERRn" ERROR OCCURS
CHECK:
AUDIO CONNECTIONS & CABLES
Terminal BOARD
FLEX CONNECTION
+5V (pin 3 conn. J601)
CHECK SIGNAL
-FOR COAXIAL OUT AT Q312, LT13
-FOR OPTICAL OUT AT Q312, JT21
ELECTRICAL SERVICE DIAGNOSTICS:
REPLACE CDR MODULE IF "DERRn"
OR "BERRn" ERROR OCCURS
Figure 7-2
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