Faultfinding Guide - Marantz DR17 Service Manual

1.7 FAULTFINDING GUIDE

NO DISC
POWER ON
DISC
NO
DETECTION
STARTS?
YES
NO
DISPLAY?
YES
NO
DISPLAY
SHOWS
" NO DISC "?
YES
PRESS
OPEN/CLOSE
NO
TRAY?
YES
LOAD DISC
PRESS OPEN/CLOSE
NO
CDDA DISC?
YES
SEE CDDA DISC
FAULTFINDING
CHECK:
POWER SUPPLY
MAINS SWITCH SH01
FUSES
MAINS TRANSFORMER
VOLTAGES AC, DC, FTD
WIRING
DISPLAY
POWER SUPPLY VOLTAGES
CLOCK FREQUENCY 8MHz
CONTROL LINES
WIRING
ELECTRICAL SERVICE DIAGNOSTICS:
DISPLAY TEST
SEE MEASUREMENTS DISPLAY
DISPLAY SHOWS BLINKING " SERVICE"
CHECK:
POWER SUPPLY VOLTAGES -12V, -8V
ELECTRICAL SERVICE DIAGNOSTICS:
REPLACE CDR MODULE IF ERROR OCCURS
CHECK:
ELECTRICAL SERVICE DIAGNOSTICS:
KEYBOARD TEST: OPEN/CLOSE SWITCH ON
DISPLAY BOARD.
IF OK, REPLACE CDR MODULE
NO
CD-R DISC?
YES
SEE CD-R DISC
FAULTFINDING
SEE CD-RW DISC
FAULTFINDING
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