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Yamaha MX-D1 - Amplifier, Руководство пользователя

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Yamaha MX-D1 - Amplifier Скачать руководство пользователя страница 10

E-6

The MX-D1 is a high-power, high-performance PWM (Pulse Width Modulation) digital stereo power amp, utilizing Yamaha's 
latest digital power amplifier and switching power supply technologies.
The following block diagrams show the amplifier and power supply circuits.

BLOCK DIAGRAMS

Power Supply Block Diagram

IN

YDA133

SPOUT

YDA134

YDA134

0V

+B

-B

L

C

Input amp

A

c

tiv

e

 po

w

e

r 

con

trol

Ou

tpu

t cu

rren

t in

fo

rm

a

tion

Analog 

feedback

Closed-loop 

feedback

2.8 MHz 

clock input

C

o

nsta

nt-

g

a

in 

PL

L 

m

odu

la

to

r cir

c

u

it

Real-time 

protection

Real-time 

protection

Protection

/mute

AC IN

88kHz

2.8MHz

(amp)

OSC

88kHz

100V(on)

200V(off)

+B

-B

OV

+

-

0V

 2.8MHz

(amp)

Line filter

Choke

Inrush

 protection circuit

Sub-

transformer

Protection circuit

Microcomputer

Isolator

Right-channel power supply

Driver

Dr

iv

er

For op-amps 

and LSI

Magnetically

-coupled 

rectifier circuit

External interface

Amplifier Block Diagram

MX-D1_U.fm  Page 6  Thursday, June 26, 2003  5:14 PM

Содержание MX-D1 - Amplifier

Страница 1: ...STEREO POWER AMPLIFIER OWNER S MANUAL U MX D1_U_H1 4 fm Page 1 Wednesday June 25 2003 9 45 AM ...

Страница 2: ... radiators heat registers stoves or other apparatus including amplifiers that produce heat 9 Do not defeat the safety purpose of the polarized or grounding type plug A polarized plug has two blades with one wider than the other A grounding type plug has two blades and a third grounding prong The wide blade or the third prong are provided for your safety If the provided plug does not fit into your ...

Страница 3: ...which can be determined by turning the unit OFF and ON please try to eliminate the problem by using one of the following measures Relocate either this product or the device that is being affected by the interference Utilize power outlets that are on different branch circuit breaker or fuse circuits or install AC line filter s In the case of radio or TV interference relocate reorient the antenna If...

Страница 4: ...r cord from the wall outlet during an electrical storm Do not attempt to modify or fix this unit Contact qualified YAMAHA service personnel when any service is needed The cabinet should never be opened for any reasons When not planning to use this unit for long periods of time i e vacation disconnect the AC power plug from the wall outlet Be sure to read the TROUBLESHOOTING section on common opera...

Страница 5: ...ircuits Active Power Control System ensures optimum performance under any load 4 to 8 Ω Constant Gain PLL Modulator provides a fixed open loop gain that is unaffected by supply voltage fluctuations 0 003 THD Total Harmonic Distortion 100 dB channel separation Yamaha s own high efficiency low noise resonant type switching power supply WBT German connectors used for inputs RCA phono and speaker outp...

Страница 6: ...When connecting to this terminal it is necessary either to have a person who have received appropriate guidance on handling make the connection or to use a cable that have been manufactured in such a way that the connection can be made simply and without problem MX D1_U fm Page 2 Thursday June 26 2003 5 14 PM ...

Страница 7: ...nect them to these jacks using an audio pin cable 5 UNBAL BAL switch With this switch you can select the BALANCE jacks or the UNBALANCE jacks 6 MUTE button You can temporarily mute the output from the MX D1 by holding down this button If you need to change any input connections while the MX D1 is still on you can protect your speakers against sudden loud noises thumps and clicks by keeping this bu...

Страница 8: ...NS Pre amplifier CD player with a volume control PA equipment Balanced XLR output To AC outlet Speaker R Speaker L Audio output YPC 1 CD player Tape deck Tuner etc etc MX D1_U fm Page 4 Thursday June 26 2003 5 14 PM ...

Страница 9: ...hown below Refer to the owner s manual of your component and verify that its output jacks are compatible with the pin assignments for these jacks When connecting match the pins and insert the connector of the XLR cable until you hear a click When disconnecting pull out the XLR cable while holding down the lever of the BALANCE jack When using this balanced connection set the UNBAL BAL switch to BAL...

Страница 10: ...tive power control Output current information Analog feedback Closed loop feedback 2 8 MHz clock input Constant gain PLL modulator circuit Real time protection Real time protection Protection mute AC IN 88kHz 2 8MHz amp OSC 88kHz 100V on 200V off B B OV 0V 2 8MHz amp Line filter Choke Inrush protection circuit Sub transformer Protection circuit Microcomputer Isolator Right channel power supply Dri...

Страница 11: ...input signal at a suitable rate In this way linearity is maintained and the open loop gain is fixed providing stable feedback Feedback Digital output pulses are fed back in a closed loop feedback circuit which improves the performance of the modulator circuit and the linearity of the output stage providing very low distortion and a wide dynamic range In addition an analog output signal taken from ...

Страница 12: ... jack There is no sound The MX D1 is not connected properly Check all connections and correct as necessary The source component connected to the MX D1 s input jacks is not set correctly Refer to the owner s manual of the source component The wrong inputs are selected on the MX D1 Use the UNBAL BAL switch to select the correct inputs The MX D1 s protection system is active Check the speaker cables ...

Страница 13: ...Y plugs Modulation PWM Pulse Width Modulation Output SEPP Single Ended Push Pull Power source Resonant type switching power supply frequency 88 kHz CONTROL OUT Power on 12 V Max 15 mA Power off 0 V Power supply U S A and Canada models AC 120 V 60 Hz Australia model AC 240 V 50 Hz U K and Europe models AC 230 V 50 Hz China and Korea models AC 220 V 60 Hz Asia model AC 110 120 220 240 V 50 60 Hz Pow...

Страница 14: ...Y YAMAHA ELECTRONIQUE FRANCE S A RUE AMBROISE CROIZAT BP70 CROISSY BEAUBOURG 77312 MARNE LA VALLEE CEDEX02 FRANCE YAMAHA ELECTRONICS UK LTD YAMAHA HOUSE 200 RICKMANSWORTH ROAD WATFORD HERTS WD18 7GQ ENGLAND YAMAHA SCANDINAVIA A B J A WETTERGRENS GATA 1 BOX 30053 400 43 VÄSTRA FRÖLUNDA SWEDEN YAMAHA MUSIC AUSTRALIA PTY LTD 17 33 MARKET ST SOUTH MELBOURNE 3205 VIC AUSTRALIA Printed in Japan WC01600 ...

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