Harman Kardon CDR 20 (serv.man13) Service Manual ▷ View online
-21-
NO
•Check the connection of IC601 pin 20.
•Check and replace the IC601(CPLD).
•Check and replace the IC601(CPLD).
NO
•Check the connection of IC409 pin 18.
•Check and replace the IC409(DAC).
•Check and replace the IC409(DAC).
LD CHECK (Not Read)
YES
YES
YES
NO
•Check the connection of CN401 pin 19.
•Check and replace the CN401, PICK
•Check and replace the CN401, PICK
UP.
YES
NO
YES
Check the P/U connector and
then replace the P/U
then replace the P/U
YES
YES
YES
YES
Normal
E
Execute ‘E.LD On’ of ‘How to use
Test Tool(Dragon) : ‘VRDC Lop
[Read Mode]’
Test Tool(Dragon) : ‘VRDC Lop
[Read Mode]’
CN401 Pin 32(ENBL)=H?
IC401
Pin 12(RREF):
0.8+/-0.3V
(1.4+/-0.3V)?
IC401 Pin 16(FPDO) :
2.9+/-0.3V?
•Check the connection of IC401 pin 13.
•Check and replace the IC401.
•Check and replace the IC401.
VRDC NG?
Execute ‘D.LD Inspection’ of
‘How to use Test Tool(Dragon)’
‘How to use Test Tool(Dragon)’
CN401
Pin 25(VRDC):
0.9+/-0.5V,
(0.6±0.5V)?
-22-
NO
•Check the connection of IC601 pin 20.
•Check and replace the IC601(CPLD).
•Check and replace the IC601(CPLD).
NO
•Check the connection of IC409 pin
18,29 and 34.
•Check and replace the IC409(DAC).
LD CHECK (Not Recored)
YES
YES
NO
•Check the connection of CN409 pin 4.
•Check and replace the CN409(DAC)
•Check and replace the CN409(DAC)
YES
NO
NO
YES
Check the IC P/U connector and
replace the P/U
IC401 Pin 16(FPDO):
2.9+/-0.3V,
YES
YES
CN401 Pin 27(VWDC1):
1.2+/-0.8V,
YES
NO
Normal
F
Execute ‘E.LD On’ of ‘How to use
Test Tool(Dragon) :
‘VWDC-1 Loop’
Test Tool(Dragon) :
‘VWDC-1 Loop’
CN401 Pin 32(ENBL)=‘H’?
CN401 Pin 31(W/XR)=‘H’?
IC401 Pin 5(WREF)
0.5+/-0.2V?
•Check the connection of CN401 pin 19.
•Check and replace the CN401 PICK
•Check and replace the CN401 PICK
UP.
VWDC NG?
•Check the connection of IC401 pin 10.
•Check the connection of IC401 pin 13.
•Check and replace the IC401, IC409.
•Check the connection of IC401 pin 13.
•Check and replace the IC401, IC409.
Execute ‘D.LD Inspection’ of
‘How to use Test Tool(Dragon)’
‘How to use Test Tool(Dragon)’
-23-
NO
•Check the connection of IC601 pin 21
and 30.
•Check and replace the IC601(CPLD).
NO
•Check the connection of IC601 pin 18
and 34.
•Check and replace the IC601(CPLD).
YES
YES
NO
•Check the connection of IC409 pin 19.
•Check and replace the IC409(DAC)
•Check and replace the IC409(DAC)
YES
YES
G
Execute ‘E.LD On’ of ‘How to use
Test Tool(Dragon) : ‘VWDC-2’
Test Tool(Dragon) : ‘VWDC-2’
CN401 Pin 30(ODON)=H?
CN401 Pin 31(W/XR)=H?
CN401
Pin26(VWDC2):
3.4±0.4V
(2.5±0.4V)?
Check the P/U connector and
replace the P/U.
replace the P/U.
-24-
NO
Check disc Label.
In case of writing fail.
Cheak the Media CD-R
or CD-RW?
YES
YES
Romove the Dust, Fingerprint
and if the disc has long width
Scratch, change it.
and if the disc has long width
Scratch, change it.
Dose the disc have
any Dust, Scratch,
Fingerprint...?
NO
NO
Eject Disc.
Go to “Writing Part Check”
Finalized Disc?
YES
If CD-R disc, use new CD-R disc.
If CD-RW disc, erase the dise.
If CD-RW disc, erase the dise.
Nomal Case
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