J
I
H
G
F
E
D
C
B
A
1
2
3
4
5
6
7
52
A-S501/A-S301
Q123A
Q123C
Q124C
Q124A
#
#
#
#
L
A/B
AUTO
POWER
STANDBY
ON/OFF
SUB
WOOFER
OUT
IMPEDANCE
SELECTOR
HIGH/LOW
R
+
-
+
-
SPEAKERS
FUNCTION (1)
(W405)
PREOUT_L
AGND
PREOUT_R
+7V
-7V
AGND
FUNCTION (1)
Note: Those parts marked with “#” are not included in the P.C.B. ass’y.
(マーク#の部品は、
P.C.B.
に含まれません。)
to HEATSINK R temperature
to HEATSINK
L temperature
(W505)
THM
THM
POW_MGT
+5S
MG
SWMT
PREMT
SPBRY
SPARY
PRIY
PRI
PRD
MAIN (2)
(CB13)
+7UNREG
-VP_UNREG
E
POW_MGT
ACH
ACL
ACL
E
E
ACH
-7UNREG
PRV HPL
E
HPR
POWER
TRANSFORMER
FUNCTION (2)
(W402)
FUNCTION (2)
(W401)
L
E
R
E
GND
OUT
VCC
GND
OUT
VCC
10 W
5 k-ohms
10 W
5 k-ohms
B, G, J models
A, B, G, L models
•
S
emiconductor Location
Ref no. Location
D111
D
6
IC101
F
6
IC102
G
2
Q1
3
7
D
5
Q129
D
6
Q127
D
6
Q1
3
9
F
3
Q119
F4
Q1
38
G3
Q11
8
G3
Q120
G
4
Q117
G5
Q11
5
H3
Q11
6
H
4
Q11
3
H
4
Q114
H
4
(Side A)
MAIN (1)
(Side A)
MAIN (5)
(Side A)
MAIN (4)
A-S501
Safety measures
•
S
ome internal parts in this product contain high voltages and are dangerous.
B
e sure to take safety measures during servicing, such
as wearing insulating gloves.
•
Note that the capacitors indicated below are dangerous even after the power is turned off because an electric charge remains and a
high voltage continues to exist there.
B
efore starting any repair work, connect a discharging resistor (
5
k
‑
ohms
/
10 W) to the terminals
of each capacitor indicated below to discharge electricity. The time required for discharging is about
3
0 seconds per each.
C1
3
4, C1
35
on M
A
IN (1) P.C.
B
.
安全対策
・
この製品の内部には高電圧部分があり危険です。修理の際は、絶縁性の手袋を使用するなどの安全対策を行ってください。
・
下記のコンデンサには電源を
OFF
にした後も電荷が残り、高電圧が維持されており危険です。修理作業前に放電用抵抗(
5
k
Ω
/
10 W
)
を下記の各コンデンサの端子間に接続して放電してください。放電所用時間は各々約
3
0
秒間です。
M
A
IN
(
1
)
P.C.
B
.
の
C1
3
4
、
C1
35
Содержание A-S301
Страница 4: ...4 A S501 A S301 A S501 A S301 REAR PANELS A S501 U model A S501 R model A S501 T model A S501 ...
Страница 5: ...5 A S501 A S301 A S501 A S301 A S501 A model A S501 B G models A S501 L model ...
Страница 6: ...6 A S501 A S301 A S501 A S301 A S501 J model A S301 U model A S301 R model A S301 ...
Страница 7: ...7 A S501 A S301 A S501 A S301 A S301 T model A S301 K model A S301 A model ...
Страница 8: ...8 A S501 A S301 A S501 A S301 A S301 B G models A S301 L model A S301 J model ...
Страница 60: ...60 A S501 A S301 MEMO MEMO ...
Страница 90: ...91 A S501 A S301 A S501 A S301 MEMO ...
Страница 91: ...A S501 A S301 ...