60
VSX-LX51
1
2
3
4
A
B
C
D
E
F
1
2
3
4
Step 5: Digital audio output switching
W
ith this product, the digital audio signal output route from IC
8
01 (USB host) varies
depending the USB reproduction and iPod reproduction.
It is controlled and switched by USA
W
(USB Audio Switch) using the IC
8
51 (logic IC).
IMCK, ISDAT, IBCK, ILRCK (when iPod reproduces)
15
Yes
N
o
Meaning and details
IC
8
01
output Pin
Signal
name
USB
playback
-
OSCU
Master clock (24.576MHz) from IC503 of DSP block is used.
Check each audio output terminal of IC
8
01.
Check the peripheral circuit of IC503.
To diagnosis
flow of DSP
IC
8
01 (Pins 1
8
,26,27,2
8
)
For the output of IC
8
51, each digital audio
signal should be output at each reproduction.
Is there
each output?
33,36
MSCK
Mass Strage Clock.
31
MSDA
Mass Strage Data.
34
MSSS
Mass Strage SS.
iPod
playback
1
8
IMCK
iPod Master Clock.
26
ISDAT
iPod Serial Data.
27
IBCK
iPod Bit Clock.
2
8
ILRCK
iPod LR Clock.
MSDA, MSCK, MSSS (when USB reproduces)
16
Yes
N
o
Check each audio output terminal of IC
8
01.
IC
8
01 (Pins 31,33,34)
Is there
each output?
IC503 (Pin 12)
OSCU (24.576 MHz : when USB reproduces)
17
Is there
output of
24.576 MHz
?
N
o
Yes
Check the UAS
W
(Pin 2) of C
N
701 (C
N
702).
Check the pattern between C
N
701 (C
N
702) and IC
8
51.
Check the MAI
N
ASSY.
Yes
IC
8
51 (Pin 1)
UAS
W
(USB Audio Switch)
1
8
N
o
W
hen USB reproduces
: High and
when iPod
reproduces : Low?
Содержание VSX-1018AH-K
Страница 8: ...8 VSX LX51 1 2 3 4 A B C D E F 1 2 3 4 2 2 SPECIFICATIONS LX51 13 3 kg 1018AH ...
Страница 9: ...9 VSX LX51 5 6 7 8 5 6 7 8 A B C D E F 2 3 PANEL FACILITIES 1 Rear panel VSX LX51 ...
Страница 10: ...10 VSX LX51 1 2 3 4 A B C D E F 1 2 3 4 VSX LX51 2 Front panel ...
Страница 11: ...11 VSX LX51 5 6 7 8 5 6 7 8 A B C D E F 3 Display ...
Страница 12: ...12 VSX LX51 1 2 3 4 A B C D E F 1 2 3 4 4 Remote control AXD7518 VSX LX51 Only ...
Страница 13: ...13 VSX LX51 5 6 7 8 5 6 7 8 A B C D E F ...
Страница 75: ...75 VSX LX51 5 6 7 8 5 6 7 8 A B C D E F ...
Страница 82: ...82 VSX LX51 1 2 3 4 A B C D E F 1 2 3 4 9 4 POWER AMP SECTION S L K R I W Y X J N ...
Страница 132: ...132 VSX LX51 1 2 3 4 A B C D E F 1 2 3 4 ...