Marantz SA8004/K1SG Service Manual page 40

8U-210103-2(AUDIO UNIT)
Check AUDIO UNIT
Check the Power Supply-1
8U-210103-2(AUDIO UNIT)
・Check the output voltage of Q853 +12V
・Check the output voltage of Q854 -12V
Check the Power Supply-2
8U-210103-2(AUDIO UNIT)
・Check the output voltage of U202
Check signal AUDIO UNIT-1
8U-210103-2(AUDIO UNIT)
・Check MCLK N203 16pin : 22.5792MHz
・Check MCLK U203 5pin
・Check MCLK U204 6pin
Check signal AUDIO UNIT-2
8U-210103-2(AUDIO UNIT)
・Check signal N203 PCM mode SACD mode
14pin
12pin
10pin
8pin
Check signal U203-1
8U-210103-2(AUDIO UNIT)
・Check signal U203 PCM mode SACD mode
6pin
10pin
8pin
PCM mode
SACD mode
O.K.
5V
O.K.
: 22.5792MHz
: 22.5792MHz
O.K.
AUDIO DATA/CLK
: LRCK -
: DATA DSDL
: - DSDR
: BCK DSDCLK
O.K.
AUDIO DATA/CLK
: LRCK DSDR
: DATA DSDL
: BCK DSDCLK
Q9 MCLK
W1 BCK
W2 DATA
W0 LRCK
Q9 MCLK
W1 DSDCLK
W0 DSDR
W2 DSDL
O.K.
Check the cable and the connection of connector.
Check soldering.
N.G.
・N851
・D851,D852,D853,D854
Check FUSE.
・F851,F852
Check the cable and the connection of connector.
Check soldering.
・N201
N.G.
・U202
・D812,D813,D814,D815
Check FUSE. (8U-210103-1)
・F804
Check the cable and the connection of connector.
N.G.
Check soldering.
・N203,U203,U204
・R203,R223
Check the cable and the connection of connector.
N.G.
Check soldering.
・N203
・R204,R205,R206,R207
Check soldering.
N.G.
・U203
・R221,R224,R222,R223
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