Circuit
Diagram – Disassembly – Yamaha YST MS50 - POWERED MULTIMEDIA SPEAKERS
DISASSEMBLE PROCEDURES
(Remove parts in the order as numbered.)
Subwoofer
1. Removal of the Rear Panel Ass’y.
a. Remove 8 screws (1) in Fig, and remove the rear panel ass’y.
* Arrow marks (<= ) are printed to identify the screws to be removed.
b. Disconnect one connector in Fig.
c. Disconnect the Speaker cord in Fig.
* When assembling the Rear Panel Ass'y, check to ensure that the packing is not damaged so as to prevent air leakage from occurring.
(Remove parts in the order as numbered.)
Subwoofer
1. Removal of the Rear Panel Ass’y.
a. Remove 8 screws (1) in Fig, and remove the rear panel ass’y.
* Arrow marks (<= ) are printed to identify the screws to be removed.
b. Disconnect one connector in Fig.
c. Disconnect the Speaker cord in Fig.
* When assembling the Rear Panel Ass'y, check to ensure that the packing is not damaged so as to prevent air leakage from occurring.
2.
Removal of the Front Panel Ass’y
The front panel assy is fixed to the cabinet with dowels at 6 locations.
* As a screwdriver (for slotted head screw) is used for removal, use special care not to cause damage to the Cabinet.
a. Using the screwdriver insert in the gaps between the front panel ass’y and cabinet (bottom side first), push up the front panel ass’y.
b. Remove the front panel ass’y while taking it out. (Front panel ass’y can not to remove completely.)
* As a screwdriver (for slotted head screw) is used for removal, use special care not to cause damage to the Cabinet.
a. Using the screwdriver insert in the gaps between the front panel ass’y and cabinet (bottom side first), push up the front panel ass’y.
b. Remove the front panel ass’y while taking it out. (Front panel ass’y can not to remove completely.)
3.
Removal of the Speaker
a. Set up the front panel ass’y in the direction of the arrow.
b. Remove 4 screws (2), and remove the speaker.
a. Set up the front panel ass’y in the direction of the arrow.
b. Remove 4 screws (2), and remove the speaker.
Circuit Diagram (Schematic Diagram)
Output
Power
Satellite .....20W+20W (1kHz, 4 ohms at T.H.D.=10%)
Subwoofer .40W (100Hz, 5 ohms at T.H.D.=10%)
Satellite .....20W+20W (1kHz, 4 ohms at T.H.D.=10%)
Subwoofer .40W (100Hz, 5 ohms at T.H.D.=10%)
Satellite
Tweeter ................................... 19mm (3/4") balanced dome Magnetic shielding type
Midrange ........................................................ 8cm (3") cone Magnetic shielding type
Subwoofer ................................................. 16cm (6-1/2") cone Magnetic shielding type
Power Consumption ........................................................ 65 W
Power Supply
U, C models .................................................... AC120V, 60 Hz
A model ........................................................... AC240V, 50 Hz
B, G models .................................................... AC230V, 50 Hz
Tweeter ................................... 19mm (3/4") balanced dome Magnetic shielding type
Midrange ........................................................ 8cm (3") cone Magnetic shielding type
Subwoofer ................................................. 16cm (6-1/2") cone Magnetic shielding type
Power Consumption ........................................................ 65 W
Power Supply
U, C models .................................................... AC120V, 60 Hz
A model ........................................................... AC240V, 50 Hz
B, G models .................................................... AC230V, 50 Hz
