Marantz CDR631 Service Manual

11
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
AUDIO BOARD
⇒
FLEX & WIRE CONNECTIONS
⇒
+5V (pin 4. W855), +12V(pin 2. W855), -12V(pin 6. W855)
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:
CHECK SINGNAL
-FOR COAXIAL OUT AT QT31,LT13
-FOR OPTICAL OUT AT QT31,JT21
⇒
• ELECTRICAL SERVICE DIAGNOSTICS:
REPLACE CDR MODULE IF
"DERRn"
OR "BERRn" ERROR OCCURS
AUDIO
OUT?
⇒
SEE FAULTFINDING GUIDE AUDIO BOARD - ANALOG OUT PATH
•
HEADPHONE BOARD
⇒
+10V (pin 6. J903), -10V (pin 2. J903)
⇒
WIRE CONNECTION
⇒
PLAY SBC442 DISC (1kHz, -30dB) AND CHECK SIGNAL AT
Q901
⇒
KILL VOLTAGE (pin 1. J903) : -8V DURING PLAY
⇒
KILL TRANSISTORS QN01 - QN02
•
•
AUDIO BOARD
⇒
FLEX & WIRE CONNECTIONS
⇒
+5V (pin 3. W853)
•
AUDIO CONNECTIONS & CABLES
Faultfinding Trees

Marantz CDR631 Specifications

General

Brand	Marantz
Model	CDR631
Category	Recording Equipment
Language	English