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29
VSX-LX51
5
6
7
8
5
6
7
8
A
B
C
D
E
F
Step 7-1: DIR
Step 7
A
To Step 6
Check the parts and patterns
in the path.
Check the HDMI ASSY, and the parts
and patterns in the path.
IC701
Do
convert 5 V into
3 V for input?
Replace IC701.
No
Yes
Check the OPTICAL IN JACK,
and parts and patterns in the path.
Check the pattern to pin 10 of IC851.
Replace IC851.
Check the FRONT IN ASSY, and
parts and patterns in the path.
IC101 (Pins 1, 3, 5 (VSX-LX51 only)) OPTICAL
Check that the S/PDIF signal is output.
Check that changes by pulling out and inserting the
digital input lines.
When the COAX or OPT is input, go to Step 7-1.
When the USB is input, go to Step 7-2.
When the HDMI (SPDIF line) is input, go to Step 7-1.
Used Source
[dts HD High Resolution Audio], [dts HD LBR],
[Dolby Digital Plus], [2ch of 48kHz sampling rate or less],
[Other compression stream]
When the HDMI (I2S line) is input, go to Step 7-3.
Used Source
[dts HD Master Audio], [Dolby True HD],
[PCM or LPCM of 88.2kHz sampling rate or more],
[LPCM Multi ch]
When the HDMI (SACD) is input, go to Step 7-5.
Used Source [SACD]
Can
observe the
digital signal
?
No
(0 V
⇔
4 V)
Yes
(0 V
⇔
4 V)
IC101 (Pins 42, 44) COAX
Can
observe the
digital signal
?
No
Yes
Yes
Check that it changes in the Playback and Pause modes of
the HDMI.
(0 V
⇔
3.3 V)
IC101 (Pin 48)
From HDMI ASSY
Can
observe the
digital signal
?
No
(1.65 V center, amplitude more than 0.2 Vp-p)
IC101 (Pin 7)
FRONT OPTICAL
Can
observe the
digital signal
?
No
Yes
Step 6: X'tal
To Step 7
Replace IC503 or X531.
Yes
IC503 (Pin 6)
No
Is there
a 24.576 MHz
output?
Check the pattern to pin 30 of IC101.
Replace IC101.
IC503 (Pin 12)
No
Is there
a 24.576 MHz
output?
Check the pattern to pin 80 of IC401.
Replace IC401.
Yes
Yes
IC503 (Pin 10)
No
Is there
a 24.576 MHz
output?
Yes
IC503 (Pin 8)
No
Is there
a 24.576 MHz
output?
Step 5: 5 V to 3 V conversion
Step 4: 3 V to 5 V conversion
IC702
Do
convert 3 V into
5 V for input?
To Step 5
Replace IC702.
No
Yes
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 ...