Marantz DR6000 - CD-DA Disc Fault Finding

12
Figure 6-2
PLAY BACK OF CD-DA
DISCS OK
PRESS <PLAY>
CD-DA DISC LOADED
CHECK:
CHECK:
•
NO
NO
NO
NO
NO
YES
YES
YES
YES
HEADPHONE?
DIGITAL
YES
DISTORTION?
DISPLAY:
“CD” &
T.O.C. 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
I/O BOARD
⇒
FLEX & WIRE CONNECTIONS
⇒
+5V, +12V, -12V, -8V
AUDIO
ANALOG
OUT?
• ELECTRICAL SERVICE DIAGNOSTICS:
REPLACE CDR MODULE IF
"DERRn"
OR "BERRn" ERROR OCCURS
•
AUDIO CONNECTIONS & CABLES
•
CONNECTION OF HEADPHONE
• ELECTRICAL SERVICE DIAGNOSTICS:
REPLACE CDR MODULE IF
"DERRn"
OR "BERRn" ERROR OCCURS
CHECK:
DIGITAL OUT TRANSFORMER LT02, Q311, OPT TRANSMITTER JT02
⇒
• ELECTRICAL SERVICE DIAGNOSTICS:
REPLACE CDR MODULE IF
"DERRn"
OR "BERRn" ERROR OCCURS
AUDIO
OUT?
⇒
SEE FAULTFINDING GUIDE I/O BOARD - ANALOG OUT PATH
•
HEADPHONE BOARD
⇒
+12V (pin 6. J902), -12V (pin 4. J902)
⇒
WIRE CONNECTION
⇒
PLAY SBC442 DISC (1kHz, -30dB) AND CHECK SIGNAL AT
TESTPOINTS 1, 2, 3 and 4
⇒
KILL VOLTAGE (pin 7. J902) : -8V DURING PLAY
⇒
KILL TRANSISTORS Q903 - Q906
•
I/O BOARD OPAMP Q901
•
I/O BOARD
⇒
FLEX & WIRE CONNECTIONS
⇒
+5V (pin 13. JJ01)
•
AUDIO CONNECTIONS & CABLES
Faultfinding Trees