Pioneer XV-LX61DV Service Manual page 31

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QQ
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Step 5: Digital audio output signal
The digital audio signal from IC401 (USB u-COM) at the iPod reproduction.
iPod
playback
IC401 (Pins 18,26,27,28)
14
Is there
each output?
Yes
IC181 (Pins 4,7,9,12)
15
Is there
each output?
No
TE
L 13942296513
16
IC181 (Pin 1)
Is the voltage
High (5 V) ?
No
17
CN3 (Pin 13)
Is the voltage
High (5 V) ?
Yes
For the output of IC181, each digital audio
signal should be output at iPod reproduction.
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IC401 Signal
output Pin name
18 UMCK iPod Master Clock.
26 UDT iPod Serial Data.
27 UBCK iPod Bit Clock.
28 ULR iPod LR Clock.
UMCK, USDAT, UBCK, ULRCK (when iPod reproduces)
No
Check each audio output terminal of IC401.
Yes
Check IC201 (DSP IC).
USB SW (iPod Digital audio signal switching)
Yes
Replace IC181.
No
Check the SYSMAIN ASSY.
x ao
y
i
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Meaning and details
Name IC401
UMCK Pin 18
UDT Pin 26
UBCK Pin 27
ULR Pin 28
Q Q
3 6 7 1 3
u163
.
XV-LX61DV
6
7
2 9 9 4 2 8
IC181 IC201
Pin 10 Pin 9 Pin 73
Pin 3 Pin 4
Pin 6 Pin 7 Pin 62, 76
Pin 13 Pin 12 Pin 60, 78
1 5 0 5 8 2 9 9 4
m
co
7
8
9 9
A
B
Name
C
MCK
Pin 1 FDTI
BCKI
LCKI
2 8 9 9
D
E
F
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