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Owners Manual - Page 1
UCA
POWERED MULTIMEDIA SPEAKERS
YST-MS50
POWERED MULTIMEDIA SPEAKERS YST-MS50
BASS
0
10
OWNER'S MANUAL 1 MODE D'EMPLOI 4
POWERED MULTIMEDIA SPEAKERS
VOLUME
Owners Manual - Page 2
...'s Manual in a wet basement, or near a bathtub, washbowl, kitchen sink, laundry tub, in a safe place for a long period of the unit. Care should be referred to .
4 Follow Instructions - The user should be read before the unit is located on the unit and in installation, such as recommended by qualified service personnel when:
A. Model...
Owners Manual - Page 3
... Multimedia Speaker YST-MS50
This device complies with the requirements listed in all installation instructions. Precautions should be used according to the instructions found to the operation of your authority, granted by the interference. Modifications not expressly approved by Yamaha may cause interference harmful to comply with Part 15 of this product in the users manual...
Owners Manual - Page 5
... the YST-MS50s on top of the unit. Otherwise, the speakers may be set this switch to the OFF position.
3 TO RIGHT SPEAKER: Using the 8 pin plug
cable, connect this control to adjust the
volume of power is lit). the standby/on both sides of them.
• Since this unit for private listening. Advanced Yamaha Active Servo...
Owners Manual - Page 6
... Subwoofer 350 (13.8") × 210 (8.3") × 321
(12.6") mm Weight Satellite speakers ......0.7 kg (1 lb. 9 oz.) × 2 Subwoofer 8.0 kg (17 lbs. 10 oz.) Finish YST-MS50 W ...........Computer white YST-MS50 B Black Accessories 3.5 mm stereo mini plug cable × 1 (1.8m), RCA pin plug cable × 1 (1.8m), 8 pin plug cable × 1 (1.8m), 8 pcs of this unit to turn on and off...
Service Manual - Page 1
... REAR PANELS 1 - 2 SPECIFICATIONS 3 INTERNAL VIEW 4 DISASSEMBLY PROCEDURES 5
PRINTED CIRCUIT BOARD 6 - 8 BLOCK DIAGRAM 9 SCHEMATIC DIAGRAM 10 PARTS LIST 11 - 15 PARTS LIST FOR CARBON RESISTORS 16
YST-MS50(M)
100778
WARNING: Static discharges can destroy expensive components. POWERED MULTIMEDIA SPEAKERS
YST-MS50(M)
SERVICE MANUAL
The contents of this Service Manual are applicable...
Service Manual - Page 2
... UNDER TEST
AC LEAKAGE TESTER OR EQUIVALENT
2. q Meter impedance should be replaced with the AC plug in both polarities.
s FRONT AND REAR PANELS
w Satellite Speakers Front Panel
Lch
Rch
w Satellite Speakers Rear Panel
Lch
Rch
YST-MS50(M)
1 Leakage Current Measurement (For 120V Models Only) When service has been completed, it is imperative to cause cancer and/or...
Service Manual - Page 3
w Subwoofer Front Panel
YST-MS50(M)
YST-MS50(M)
w Subwoofer Rear Panel
U and C models
B and G models
A model
2
Service Manual - Page 4
U USA model C Canadian model A Australian model B British model G European model
159 (6-1/4")
q DIMENSIONS q Satellite Speaker
166(6-17/32")
97 (3-13/16")
q Subwoofer
178 (7")
321 (12-5/8")
210 (8-1/4")
350 (13-3/4")
Unit : mm (inch)
YST-MS50(M)
3
YST-MS50(M)
s SPECIFICATIONS
Type Advanced Active Servo Technology Output Power
Satellite 20W+20W (1kHz, 4 ohms at T.H.D.=10%) ...
Service Manual - Page 5
... parts of the PARTS LIST.)
Lch
Rch
qw
e
Satellite Speaker (L ch)
q MAIN (B) P.C.B.
w Subwoofer
r
t
Subwoofer r MAIN (E) P.C.B. y
u
YST-MS50(M)
4 y SPEAKER UNIT
(Subwoofer) u MAIN (F) P.C.B.
Satellite Speaker (R ch) w MAIN (C) P.C.B. YST-MS50(M)
s INTERNAL VIEW
w Satellite Speakers Note: The Satellite Speakers are not available. (See page 14 and 15 of the Satellite Speakers...
Service Manual - Page 6
... taking it out. (Front panel ass'y can not to the Cabinet. Disconnect the Speaker cord in Fig. 2. Set up the front panel ass'y. Remove 4 screws ( w ) in Fig. 1, ...not damaged so as numbered.) q Disassemble of the Subwoofer 1. a. Front Panel Ass'y
2. YST-MS50(M)
s DISASSEMBLY PROCEDURES
(Remove parts in the gaps between the front panel ass'y and cabinet (bottom side first), push up ...
Service Manual - Page 7
... D5 D6 D7 D8
Location B2 F3 F2 E2 E3 E3 E3
Ref. No. SPEAKER (MIDRANGE)
-+
SPEAKER (TWEETER)
+-
2.2µ 5
BL
RE RE
L
TO SUB Wo.
6
6
MAIN ( E ) P. BASS
MAIN ( F ) P. BE
2
RE WH
E
F
TO : SPEAKER (WOOFER)
3
FROM : MAIN ( E )
G
H
YST-MS50(M)
q Semiconductor Location
Ref. A
B
C
D
s PRINTED CIRCUIT BOARD (Component side)
1
w Subwoofer
BL: U, C BR: A, B, G
WH: U, C BE...
Service Manual - Page 8
...
SW2
F1
-6dB/oct
POWER TRANSFORMER
BASS -12dB/oct
Rectifier
D2
~
+
Regulator IC4
IN OUT GND
+B 5
8
9
18
14
Power Amp. A
YST-MS50(M)
s PRINTED CIRCUIT BOARD (Component side)
1
2
B
w Satellite Speaker (R ch)
(POWER)
MAIN ( C ) P. C. B.
4
5
6
8
RE
-+
SPEAKER (TWEETER)
2.2µ
+-
No. SUB Wo.
678
SW1
OFF
ON
JK2
+
RSP+
(POWER)
TWEETER MIDRENGE
Lch SATELLITE...
Service Manual - Page 9
...replaced with parts having specifications equal to those originally installed. * Schematic diagram is subject to change without notice.
10 MAIN ( D )
2.2µ +
SATELLITE
TWEETER
- CH.2
+ - C.
C. R ch
+
SATELLITE
MIDRANGE
- MAIN ( B )
K YST-MS50... A
B
C
D
E
s SCHEMATIC DIAGRAM
1
VOLUME 2
3
4 TO LEFT SPEAKER
TO RIGHT SPEAKER 5
0 0
0
11.7 0 0
PHONE AMP
0
-11.5
0 0
0...
Service Manual - Page 10
... HEAD B-TITE SCREW
SCR.BW.HD : BW HEAD TAPPING SCREW
SCR.CUP
: CUP TITE SCREW
SCR.TERM : SCREW TERMINAL
SCR.TR
: SCREW, TRANSISTOR
SUPRT.PCB : SUPPORT, P.C.B. YST-MS50(M)
PARTS LIST
s ELECTRICAL PARTS
s WARNING Components having special characteristics are marked Z and must be replaced with "#" are not included in the P.C.B.
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