Read Harman Kardon CDR 25 (serv.man4) Service Manual online
29
NO
Check power Board.
No Audio
(Current Deck is CDP)
YES
YES
Power (5V, 3.3V, 8V) is
right?
NO
Check IC7V2 control sig-
nals.
DAC LRCK/BCK/DATA/
MCLK are right?
(IC7V2 pin 1, 2, 3, 4)
MCLK are right?
(IC7V2 pin 1, 2, 3, 4)
YES
NO
YES
YES
Check connector PN501,
CN701.
IC510 output signals are
right?(IC510 pin 42, 49,
51, 55)
right?(IC510 pin 42, 49,
51, 55)
Main clock is ok?
(IC510 pin50)
YES
Change IC510.
IC408 pin6 signal is ok?
YES
Check MCLK path
Check IC408.
NO
Check there path
Input signals are right?
(IC510 pin 63, 64, 65)
(IC510 pin 63, 64, 65)
YES
YES
YES
YES
CDP DSP(IC402) pin47,
48, 49 ard right?
48, 49 ard right?
Check IC402 control line
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