Faultfinding Trees - Marantz CDR500 F1B Service Manual

1.7

Faultfinding trees

7.1 CDR-Module
NO DISC LOADED
SWITCH ON POWER
CHECK:
NO
DISPLAY?
YES
CHECK:
NO
DISPLAY:
"INSERT DISC"
YES
PRESS
<OPEN/CLOSE>
CHECK:
NO
TRAY?
YES
INSERT DISC
PRESS <OPEN/CLOSE>
NO
CD-DA DISC
LOADED?
YES
SEE CD-DA DISC
FAULT FINDING
MAINS, MAINS CABLE
POWER SUPPLY (SEE FAULT FINDING GUIDE PSU)
WIRING
ON/OFF SWITCH
FUSES
VOLTAGES
DISPLAY (SEE FAULT FINDING GUIDE DISPLAY BOARD)
WIRING
SUPPLY VOLTAGES
CLOCK SIGNAL 8MHz
CONTROL SIGNALS
KEYBOARD
STANDBY LED
ELECTRICAL SERVICE DIAGNOSTICS:
DISPLAY TEST, KEYBOARD TEST
WIRING
POWER SUPPLY VOLTAGES
ELECTRICAL SERVICE DIAGNOSTICS:
REPLACE CDR MODULE IF "DERRn"
OR "BERRn" ERROR OCCURS
DISPLAY BOARD (SEE FAULT FINDING GUIDE DISPLAY BOARD)
WIRING
SUPPLY VOLTAGES
CLOCK SIGNAL 8MHz
CONTROL SIGNALS
KEYBOARD
ELECTRICAL SERVICE DIAGNOSTICS:
DISPLAY TEST, KEYBOARD TEST
MECHANICAL SERVICE DIAGNOSTICS:
REPLACE CDR MODULE IF ERROR OCCURS
NO
CD-R DISC CD-RW DISC
LOADED?
YES YES
SEE CD-RW DISC
SEE CD-R DISC
FAULT FINDING
FAULT FINDING
Figure 7-1
1-10
LOADED?
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