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5
Step 4: NW (NetWork) Audio (MAIN)
JA701 (Pins 1, 2, 3, 6)
TD±, RD±
Are there
No
Check IC501 and its periphery.
data signals
Check the connectd device.
?
Yes
IC501 (Pins 18-21)
RXD0-3
Are there
No
Check IC501 and its peripheral
data signals
circuits.
?
Yes
IC501 (Pin 22)
RXDV
No
Is the
Check IC501 and its peripheral
voltage "H" ?
circuits.
Yes
IC701 (Pin 39)
NETSPDIF
Is there
No
Check the pins 69, 73-75 of IC701.
a signal?
Yes
CN1404 (Pin 1)
NETSPDIF
No
Is there
Check the patterns between
a signal?
IC701 and CN1404.
Yes
To Step 5
5
6
Step 5: NW (NetWork) Audio (ZONE 2, 3)
JA701 (Pins 1, 2, 3, 6)
Are there
data signals
IC501 (Pins 18-21)
Are there
data signals
IC501 (Pin 22)
voltage "H" ?
IC701 (Pins 167,168,195,21)
Are there
clock and data
signals?
CN1404 (Pins 9,10,11,13)
Are there
clock and data
signals?
SC-LX82
6
7
TD±, RD±
No
Check IC501 and its periphery.
Check the connectd device.
?
Yes
RXD0-3
No
Check IC501 and its peripheral
circuits.
?
Yes
RXDV
No
Is the
Check IC501 and its peripheral
circuits.
Yes
NMCLK, NLRC, NBCK, NFDAT
No
Check the pins 69, 73-75 of IC701.
Yes
NMCLK, NLRC, NBCK, NFDAT
No
Check the patterns between
IC701 and CN1404.
Yes
End
7
8
A
B
C
D
E
F
51
8
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