This manual has been provided for the use of authorized Yamaha Retailers and their service personnel.
It has been assumed that basic service procedures inherent to the industry, and more specifi cally Yamaha Products, are already known
and understood by the users, and have therefore not been restated.
WARNING:
IMPORTANT:
The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The research, engineering, and service
departments of Yamaha are continually striving to improve Yamaha products. Modifi cations are, therefore, inevitable and specifi cations
are subject to change without notice or obligation to retrofi t. Should any discrepancy appear to exist, please contact the distributor's
Service Division.
WARNING:
IMPORTANT:
Failure to follow appropriate service and safety procedures when servicing this product may result in personal injury,
destruction of expensive components, and failure of the product to perform as specifi ed. For these reasons, we advise
all Yamaha product owners that any service required should be performed by an authorized Yamaha Retailer or the
appointed service representative.
The presentation or sale of this manual to any individual or fi rm does not constitute authorization, certifi cation or
recognition of any applicable technical capabilities, or establish a principle-agent relationship of any form.
Static discharges can destroy expensive components. Discharge any static electricity your body may have
accumulated by grounding yourself to the ground buss in the unit (heavy gauge black wires connect to this buss).
Turn the unit OFF during disassembly and part replacement. Recheck all work before you apply power to the unit.
A-S3000
■ CONTENTS
TO SERVICE PERSONNEL ............................................ 2
FRONT PANELS .............................................................3
REPLACEMENT PARTS LIST ................................ 73–99
REMOTE CONTROL ...................................................100
アンプ調整
............... 32–34
P.O.Box 1, Hamamatsu, Japan
'13.10
A-S3000
■ TO SERVICE PERSONNEL
1. Critical Components Information
Components having special characteristics are marked ⚠ and
must be replaced with parts having specifications equal to those
originally installed.
2. Leakage Current Measurement (For 120V Models Only)
When service has been completed, it is imperative to verify
that all exposed conductive surfaces are properly insulated
from supply circuits.
• Meter impedance should be equivalent to 1500 ohms shunted
by 0.15 F.
A-S3000
For U model
WALL
OUTLET
• Leakage current must not exceed 0.5mA.
• Be sure to test for leakage with the AC plug in both polarities.
EQUIPMENT
UNDER TEST
INSULATING
TABLE
AC LEAKAGE
TESTER OR
EQUIVALENT
“CAUTION”
“F1: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 10A, 125V
FUSE.”
For C model
CAUTION
F1: REPLACE WITH SAME TYPE 10A, 125V FUSE.
ATTENTION
F1: UTILISER UN FUSIBLE DE RECHANGE DE MÉME TYPE DE 10A, 125V.
WARNING: CHEMICAL CONTENT NOTICE!
This product contains chemicals known to the State of California to cause cancer, or birth defects or other reproductive
harm.
DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REASON
WHATSOEVER!
Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or
expose eyes to solder/flux vapor!
If you come in contact with solder or components located inside the enclosure of this product, wash your hands before
handling food.
About lead free solder /
All of the P.C.B.s installed in this unit and solder joints are
soldered using the lead free solder.
Among some types of lead free solder currently available,
it is recommended to use one of the following types for
the repair work.
• Sn + Ag + Cu (tin + silver + copper)
• Sn + Cu (tin + copper)
• Sn + Zn + Bi (tin + zinc + bismuth)
Caution:
As the melting point temperature of the lead free solder
is about 30°C to 40°C (50°F to 70°F) higher than that of
the lead solder, be sure to use a soldering iron suitable
to each solder.
Power cable (2.0 m) (U, T, K, A, B, G, L, V models) ....................x 1
* Specifications are subject to change without notice.
※ 参考仕様および外観は、製品の改良のため予告なく変更すること
があります。
U .......................U.S.A. model
T .................... Chinese model
K .....................Korean model
A ................Australian model
B ...................... British model
• DIMENSIONS /
54
(2-1/8")
仕上げ
Color: Front and top panels / Side panel
付属品
(1.5 m) (J model) ....................................................x 1
G .................European model
L .................Singapore model
V ..................... Taiwan model
J ..................Japanese model
寸法図
Top view
ø 45
23
(7/8")
■ General /
Power Supply /
U model ..................................................................AC 120 V, 60 Hz
T model ................................................................... AC 220 V, 50 Hz
K model .................................................................. AC 220 V, 60 Hz
A model .................................................................. AC 240 V, 50 Hz
B, G models ............................................................ AC 230 V, 50 Hz
L model ...................................................... AC 220–240 V, 50/60 Hz
V model ................................................................... AC 110 V, 60 Hz
J model .............................................................. AC 100 V, 50/60 Hz
Power Consumption /
U model ......................................................................350 W/500 VA
T, K, A, B, G, L, V, J models .................................................... 350 W
Standby Power Consumption (reference data) /
待機時消費電力(参考値)
................................................................................................. 0.3 W
Maximum Power Consumption (1 kHz, 8 ohms, 10 % THD) [V model]
................................................................................................ 700 W
Dimensions (W x H x D) /
............................... 435 x 180 x 464 mm (17-1/8" x 7-1/8" x 18-1/4")
総合
電源電圧
消費電力
寸法(幅 × 高さ × 奥行き)
8
319 (12-1/2")
48
55
(1-7/8")
(2-1/8")
Front view
325 (12-3/4")
435 (17-1/8")
421 (16-5/8")
464 (18-1/4")180 (7-1/8")
20
(3/4")
160 (6-1/4")
20
(3/4")
Unit: mm (inch)
単位:mm(インチ)
■ INTERNAL VIEW
Rear view
Top view
Front view
1213
A-S3000
1
4
6
10
2
35
7
8
911
1514
1
INPUT (2) P.C.B.
2
INPUT (1) P.C.B.
3
FRONT (16) P.C.B.
4
FUNCTION (2) P.C.B.
5
FRONT (15) P.C.B.
6
FUNCTION (1) P.C.B.
7
INPUT (3) P.C.B.
8
MAIN (1) P.C.B.
9
MAIN (3) P.C.B.
10
POWER TRANSFORMER
11
MAIN (2) P.C.B.
12
LED P.C.B.
13
FRONT (1) P.C.B.
14
METER UNIT
15
FRONT (2) P.C.B.
16
FRONT (3) P.C.B.
17
FRONT (5) P.C.B.
18
FRONT (6) P.C.B.
19
FRONT (4) P.C.B.
20
FRONT (7) P.C.B.
21
FRONT (8) P.C.B.
22
FRONT (9) P.C.B.
23
FRONT (10) P.C.B.
24
FRONT (11) P.C.B.
25
FRONT (12) P.C.B.
26
FRONT (14) P.C.B.
27
FRONT (13) P.C.B.
A-S3000
1718212223242619
16202527
■ SERVICE PRECAUTIONS /
サービス時の注意事項
Safety measures
• Some internal parts in this product contain high voltages
and are dangerous.
Be 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.
Before 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 30 seconds
per each.
• Turn the BALANCE knob unit counterclockwise
fully and check that the pointer in it matches with
the “BALANCE L” position.
• Turn the BALANCE knob unit clockwise fully
and check that the pointer in it matches with the
“BALANCE R” position.
Center position of “BALANCE” knob unit
BALANCEつまみの中央位置
Pointer
指標
Bottom view
0.5–0.75 mm
“BALANCE” knob unit
BALANCEつまみ
VR403
Lock set screw
止めネジ
Front panel
Front panel
Install/remove the lock set screw at this position
on the front of the front panel.
フロントパネル表側のこの箇所で止めネジの
取り外し/取り付けを行います 。
Fig. 5
14
A-S3000
4. Removal of Sub-chassis
a. Remove 4 screws (⑤). (Fig. 6)
b. Remove the support top L and support top R. (Fig. 6)
c. Remove 4 screws (⑥). (Fig. 6)
d. Remove the sub-chassis. (Fig. 6)
⑤
Support top (L)
サポートトップ(L)
⑤
4. サブシャーシの外し方
a. ⑤のネジ 4 本を外します。(Fig.6)
b. サポートトップ L とサポートトップ R を外します。
g. Remove 10 screws (⑪). (Fig. 9)
h. Remove the front frame. (Fig. 9)
i. Remove 10 screws (⑫). (Fig. 9)
j. Remove the rear frame. (Fig. 9)
k. Remove 4 screws (⑬). (Fig. 9)
l. Remove CB205, CB206, CB304 and CB308. (Fig. 9)
m. Remove the heatsink unit L together with the MAIN (2)
P.C.B. (Fig. 9)
n. Remove 4 screws (⑭). (Fig. 9)
o. Remove CB303. (Fig. 9)
p. Remove the heatsink unit R together with the MAIN (1)
a. Remove 2 screws (⑮). (Fig. 12)
b. Remove 4 screws (⑯). (Fig. 13)
c. Remove CB801, CB802 and CB803. (Fig. 13)
d. Remove the shield case together with the INPUT (2)
P.C.B. (Fig. 13)
7. Removal of INPUT (1) P.C.B.
a. Remove 7 screws (⑰) and 8 screws (⑱). (Fig. 12)
b. Remove 3 screws (⑲) and then remove the P.C.B.
support. (Fig. 13)
c. Remove screw (⑳) and disconnect cable. (Fig. 13)
A-S3000
d. Remove 3 screws (㉑). (Fig. 13)
e. Remove CB902, CB903 and CB905. (Fig. 13)
f. Remove the INPUT (1) P.C.B. which is connected
directly to the INPUT (3) P.C.B. with board-to-board
connectors. (Fig. 13)
5. Click [Refer...] and select the firmware name.
(Fig. 4)
* The ID and MCU Type are loaded automatically
when the file is selected. (Fig. 4)
Click [OK]. (Fig. 4)
A-S3000
When [Refer...] is clicked, the “Open” screen appears
[Refer...]をクリックすると「ファイルを開く」が表示されます
5.[Refer...]をクリックし、書き込むファームウェア
を選択します。(Fig.4)
※ ID、および MCUType は書き込みファイル選
択後、自動的に取り込まれます。(Fig.4)
[OK]をクリックします。(Fig.4)
6. Click [Setting], and set the baud rate. (Fig. 5)
Fig. 4
6.[Setting]をクリックし、通信速度の設定を行い
ます。(Fig.5)
115200
40
24
Fig. 5
A-S3000
7. Click [E.P.R.], then the “Erase” screen appears.
(Fig. 6)
8. Click [OK] to start writing. (Fig. 6)
9. When writing of the firmware is completed, the
screen appears as shown below. (Fig. 7)
Click [OK]. (Fig. 7)
10. Click [Exit] to end FlashSta.exe. (Fig. 7)
7.[E.P.R]をクリックすると、「Erase」が表示されま
す。(Fig.6)
8.[OK]をクリックして書き込みを開始します。
(Fig.6)
Writing being executed.
書き込み中
A-S3000
Fig. 6
9. ファームウェアの書き込みが完了すると、以下の
画面が表示されます。(Fig.7)
[OK]をクリックします。(Fig.7)
10.[Exit]をクリックして FlashSta.exe を終了します。
(Fig.7)
11. Disconnect the power cable of this unit from the
AC outlet.
12. Remove the RS-232C conversion adaptor and
flexible flat cable from the writing port (CB511 on
FUNCTION (1) P.C.B.) of this unit.
13. Connect the power cable of this unit to the AC
outlet, start up the self-diagnostic function and
check that the firmware version is the same as
written one. (For details, refer to “Confirmation of
firmware version”)
13.本機の電源コードを AC コンセントに接続してダ
イアグを起動し、ファームウェアバージョンが書
き込まれたものと同じであることをチェックしま
す。(詳細は “ファームウェアのバージョンの確認”
を参照してください。)
25
A-S3000
■ SELF-DIAGNOSTIC FUNCTION /
This unit has self-diagnostic functions that are intended
for inspection, measurement and location of faulty point.
● Protection Information Display
When the power to this unit is turned on and the STANDBY/
ON indicator is flashing, the normal operation is not
available because the protection function is at work.
In that case, the protection information can be displayed
by the procedure below. However, the power supply relay
(RY1 and RY2 on FUNCTION (1) P.C.B.) does not turn on.
A-S3000
• Operation procedures
Turn the BALANCE knob unit counterclockwise fully
and then while pressing down the AUDIO MUTE
switch, set the STANDBY/ON / OFF (U, K, A, B, G, L,
V models)/ “
If the protection function works and causes hindrance
to troubleshooting, cancel the protection function by the
procedure below, and it will be possible to enter the selfdiagnostic function mode.
• Operation procedures
Turn the BALANCE knob unit counterclockwise fully
and then while pressing down the AUDIO MUTE
switch, set the STANDBY/ON / OFF (U, K, A, B, G, L,
V models)/ “
and keep pressing down the AUDIO MUTE switch for
3 seconds or longer.
The STANDBY/ON indicator lights up and the power
supply relay (RY1 and RY2 on FUNCTION (1) P.C.B.)
turns on.
The firmware version of the microprocessor is indicated.
• Operation procedures
Turn the BALANCE knob unit and TREBLE knob unit
clockwise fully and then while pressing down the
AUDIO MUTE switch, set the STANDBY/ON / OFF (U,
K, A, B, G, L, V models)/“
ON position.