Marantz DR-6000, MAR770, MAR775 service manual CD-DA Disc Loaded

CD-DA DISC LOADED

DISCNO DETECTION &

READING?

YES

DISPLAY: NO

“CD” &

T.O.C. INFO?

YES

PRESS <PLAY>

ANALOG NO

AUDIO

OUT?

YES

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

I/O BOARD

W651 CONNECTION

FLEX CONNECTION

+5V (pin 8 conn. JJ01)

KILL VOLTAGE (pin 7 conn. JJ01):

-8V DURING PLAY

KILL TRANSISTORS QN51 - QN54

PLAY AUDIO SIGNALS DISC TRACK 15:

SIGNAL OF 5.4 VPP ON PINS 1 AND 3 OF CONN. J652

ELECTRICAL SERVICE DIAGNOSTICS:

REPLACE CDR MODULE IF "DERRn"

OR "BERRn" ERROR OCCURS

YES

DISTORTION?

NO

NO

HEADPHONE?

YES

DIGITAL NO

AUDIO

OUT?

YES

PLAY BACK OF CD-DA

DISCS OK

CHECK:

AUDIO CONNECTIONS & CABLES

I/O BOARD

FLEX CONNECTION +5V (pin 8 conn. JJ01)

ELECTRICAL SERVICE DIAGNOSTICS:

REPLACE CDR MODULE IF "DERRn"

OR "BERRn" ERROR OCCURS

CHECK:

WIRING OF HEADPHONE/IR BOARD

ELECTRICAL SERVICE DIAGNOSTICS:

REPLACE CDR MODULE IF "DERRn"

OR "BERRn" ERROR OCCURS

CHECK:

AUDIO CONNECTIONS & CABLES

I/O BOARD

FLEX CONNECTION

+5V (pin 8 conn. JJ01)

DIGITAL OUT TRANSFORMER LT02, Q311

ELECTRICAL SERVICE DIAGNOSTICS:

REPLACE CDR MODULE IF "DERRn"

OR "BERRn" ERROR OCCURS

CL 96532076_017.eps 290799

Figure 7-2

11