63
VSX-LX51
5
6
7
8
5
6
7
8
A
B
C
D
E
F
[2] Protection Circuit Process List (XPROTECT)
XPROTECT Circuit
Item
Purpose
Detection Method
Process
Warning Indication
Remarks
XPROTECT
AMP power supply circuit and
Transformer short circuit
detect. (defect status)
Observe C
N
5701 pin3 or pin5
voltage,
V
L+ and
V
L-.
Detects when the XPROTECT
port becomes "L".
(Pin 102 of IC101)
Turns muting on and
speaker relay off, and
immediately turns off the
power. Then flashes
DIGITAL PRECISIO
N
PROCESSI
N
G indicator.
N
one
Once detected and turned
the power off, input a key
never again.
I
N
TERFACE ASSY
E
PO
W
ER AMP ASSY
R
MAI
N
ASSY
B
UCOM
IC101
102
R5723
47k
R5725
47k
R5726
47k
R5727
220k
R572
8
220k
D5721
1SS352
D5722
1SS352
10u/63
C5723
TS
GAMP
D57
8
2
UDZS7R5(B)
DTC124EUA
Q57
8
1
DTC124EUA
Q57
8
2
DTA124EUA
Q57
8
3
DTA124EUA
Q57
8
4
D57
8
3
1SS352
D57
8
4
1SS352
D57
8
1
UDZS5R1(B)
C57
8
1
0.01u/50
G
N
DU
R57
8
1
1k
V
+5UM
Short circuit detect:
AMP power supply circuit (VL)
Short circuit detect:
Transformer
R57
8
2
10k
R57
8
3
10k
V
L+
V
L-
G
N
DU
V
+5UM
R57
8
4
47k
DTC124EUA
Q57
8
5
G
N
DU
R57
8
5
100k
R5724
47k
C57
8
2
1u/10
C
N
5701
-3
C
N
5
8
03
-9
C
N
4
8
0
8
-9
C
N
4
8
03
-15
C
N
10
8
-15
C
N
5701
-5
G
N
DU
R422
1M
C421
0.047u/25
R421
47k
V
+5US
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 ...