Yamaha PC5002M Manuale utente

DUAL

CHANNEL

POWER AMPLIFIER

.FRONT PANEL

PAOASSIONAL

SERIES

POWER

AMPLlFliR

TNEllMlL

,,.."a

CHANNEL

PUSH

ONIWIH

POWER

Of-

WF-

-0B

REARPANEL

..............................

SPECIFICATIONS

...........................

NAMESOF THE PARTS.

......................

DISASSEMBLY INSTRUCTIONS,

................

GENERAL ADJUSTMENTS

....................

PRINTED CIRCUIT BOARD LAYOUT

.............

PARTSLIST

............................

1-17

COMPLETE CIRCUIT DIAGRAM

WIRING

NIPPON GAKKI

CO.,

LTD. HAMAMATSU,.JAPAN

2.2K

Pr~nted

Japan.3.83.

.REAR PANEL

Japan Model

European Model

Continuous RMSOutput Power

STEREO 8S2(20Hzto20kHz.THD 0.003%)

500W

4n(20Hzto 20kHz,THD 0.01%)

. .

750W+750W

BTL(MON0)8n(20~zto 20kHz.THD 0.01%)

......

1500W

Power Bandwidth

250W18S2, THD 0.1%

..............

10Hzto 100kHz

Input Sensitivityjlmpedance

500~/8n

........................

1.73~/25ka

Frequency Respoqse

8n, 1W

...................

10Hzto 100kHz

Subsonic Filter

..................

fc=7Hz, -12dBloct

Signal-to-NoiseRatio (IHFA, RL=~S~)

...........

122dB

Total Harmonic Distortion(STEREO)

20Hz to 20kHz, 250W1852

...........

0.003% less than

USA

Model

Primary Fuse

..............

15A, 250V

2(USA model)

T6.3A, 250V

2(Europeanmodel)

15A, 125V

2(Japan model)

Power Supply

.................

AC 120V(USAmodel)

AC 220/240V(European model)

AC 100V(Japanmodel)

Power Consumption (EIAJ)

.........

1000W(Dualchannel)

Dimensions(W

............

482

289

482

11-318

19 inch

Weight

.........................

61 kg(134.2 Ibs)

'Specifications subject to change without notice.

.y7fi/\'-&Lbf

....../fs:,7

79-

b, F5-f

7'9-

I.m2t%fi~W$~b.

y-f

Fn/f-&ibf

......

V~P

39-

wa;R

?>xm?#@fiTi$rb,

9>3 (1)

%Ibfb, ....../f7-9-

U)2#@h'qiETTo

~-sY)L~=.Y

&LZ~T,

......

A~Q-

I..

an1,

I/-:/-

I.mnt%fi.rwa-r.it,

*I.~i'j/\'-&LbqT,

......y-f%-

Fp-

I.,

$-I5

I.?>Xm9#@fiTii$Tb0

7a>~./f+~b&IbTb.......$-9-9-

3-9-?>I:'/- b,LED9- bm5Zt%fiq6$Tb0

Removal of top cover

buffer circuit board, drive circuit board can be replaced.

Removal of side covers

sub power supply circuit board, sub power supply transformer can be replaced.

Removal of heatsink (rear)

power circuit board can be replaced.

Removal of terminal unit

input circuit board, output relay circuit board, can be removed.

Removal of bottom cover

diode circuit board, main power transformer can be replaced.

Removal of front panel

meter circuit board, meter lamp circuit board, LED circuit board can be replaced.

TERMINAL UNIT

/f7-9-

(L)

/f7-9-

b(R)

POWER C.BOARD(L) POWER C.BOARD(R)

7~4

DIODE

C.BOAF

BUFFER C.BOARD

/f>y

~7<7"*9-

b(L) P74?>- b(R)

DRIVE C.BOARD(L) DRIVE C.BOARD(R)

POWER C.BOARD(R) POWER C.BOARD(L)

/f7->-

b(R)

/f7-9-

(L)

Cl~oF'U'UDR

ELAY

LYTlC

CAPACITOR

$+'>

$4>

b7>Z b7>X

MAIN POWER TRANSFORMER

5+"-14-- P

-5-

(L)

DIODE

C.BOARD(L)

VltiR

$--57-7>7O

b b7>Z

METER LAMP

""A

C.BOARD SUB POWER TRANSFORMER

SUB POWER SUPPL

LED9- b

LED C.BOARD

".Y"T\I

METER

ATTE

NUATO

POWER'SWITCH

7syyq.-9-

/f7--44*~7-

.DISASSEMBLY INSTRUCTIONS

tt-i

E'/I=+JLOlMfLft

Om$P&ibfLdf.

1.929

('l7')

OlMf

l.3

@o,+'iflbf Ldb.

lrnlr-mM+

0m+5%ttfLdb0

Removal of Top Cover

Remove screws

and

Remove screws

and

7a>E/cw~coltfLft

~Y7'A/\'--.

b.LA~\'--&CtfLdf.

@@O)+'i&lbfLdb.

Removal of Front Panel

Remove the top cover and bottom

a@mlr.~%~$f'ift:/f~~77

bh'Cbfhb

a@-om+'iaisfb1: ~4.r~~-bt~li~11.d~~

@@~+'i&CbfbtV7'@B9-bVlbfhdb,

tt7'F5>XOltf Lh

@m+'i&Cifbt:Vy

4:,zAssSy Vlbfhdb.

@OO)+'i%Cif

ttV7'b4>~7YCifhbt,

Removal of DriveCircuit Board, Buffer Circuit

Board, Sub Power Supply Circuit Board

Remove screw@. The buffer c~rcuitboard can

now be removed.

Remove screws

The drive circuit

board can now be removed.

Removescrew

The sub power supply circu~t

board can now be removed.

@@m;t.'ifldf .tfC;Y9- 5t)l.1=~bVtZfh2.t.

.@m+'i&ltfelb~h

b-9-

btFCbfhbt.

Removal of Tower Circuit Board, Output Relay

Circuit Board, and Terminal Unit

Removescrew

The power circuit board can

.GENERAL ADJUSTMENTS

ADJUSTING POINTS

TPO

TPV-

TPE-

TPE.

DRIVE C.Boord lR1and lL1

IIRR

Step

'2 Pay dueattentiontothedummy load, which must handle high output power.

BBP*

Adjustment

Point

VR30.2

VR303

VR301

VR901

(Lch)

VR902

(R ch)

Adjustment item

X@mE%@E%%

Voltage adjustment

of regulated power

supply

P-rP1)>Ya;3

Idlingcurrent

adjustment

j-s-@,-ga%

Meter sensitivity

adjustment

tx~iti'.f2~

Test

Point

TPV(+)-E

TPV(-)-E

TPE(+)-TPO

TPE(-)-TPO

To be performed

12s

Equipment

3-7-

Digital

Voltmeter

2l)*]bt.

3-7-

Milli-

voltmeter

"El

st^^

Audio signal

Generator

$55

Procedure

L0>TPV+C.i~--Z/fL7

(r?>

FB~)mt~frfi39rfs

i:?dB&

fr%Et6,

Adjust the VR toobtainthe rated

voltage reading between test pin

TPV and chassis ground.

Y>TPV-CZ/T-LW~~

(Y7> FB-7) m@E&-3R%f&

iCfd6

&-%Ebb,

Adjust the VR toobtain the rated

voltage reading between test pin

TPVand chassis ground.

&r;*Cdl,

frzL\7lfL\i=

HLTi=jBi&tL, 593b7mr

-9>5fbizR%@i:fd6.k

i=%!?&66,

First turnthe VR fully counter-

clockwise. Then switch on the

power, wait for at least 5 minutes,

and adjust the VR obtain the rated

reading.

IkHzmW+%&-h%ILf:i%Fm, X

~ttrm

(soow/a

63.3~)

i=%-9-~7ltS%v

dB2 fd6

i:%E?f6,

Adjust the VRs toobtain a meter

indication of0 dBwhen a 1 kHz

signal is applied tothe inputand

the output is at rated power (500

ohms, 63.3 V).

after step

gem

Rating

20v

+1V

-1 20v

+Iv

5mV-

7rnV

$9-

Meter

in-

dication

tik

Renarks

cnf%i:

77fd:

8x71

ma.

7' 2

;it

.PRINTED CIRCUIT BOARD LAYOUT

Meter

Lamp.

.PRINTED CIRCUIT BOARD LAYOUT

Buffer Drive

Output Relay

Power

Input

TR307, TR320.T

TR324.TR326

2SA970(OR.

BLI

-----

TERMINAL

Channel Contracted

r-'

------------------------------

Model

only

WIRING

MODEL

POWER

.CONTENTS

EXPLODED VIEW (ALLOVER)

. . . . . .

...

.. .

PARTS LlST (ALLOVER)

. .

. . .

...

EXPLODED VlEW (FRONT PANEL UNIT)

. . . .

.. .

PARTS LlST (FRONT PANEL UNIT)

. . .

...

EXPLODED VlEW (MAINCHASSISUNIT)

. .

PARTS LlST

(M;~IN

CHASSIS UNIT)

. .

. . .

EXPLODED VlEW (POWER UNIT).

. . . .

.. .

. . . . . .

PARTS LlST (POWER UNIT).

. . . ..

. . . .

. . .

EXPLODED VlEW (TERMINAL UNITIOUTPUT CIRCUIT

BOARD UNITISIDE STAY ASS'Y)

. .

. ........

PARTS LlST (TERMINALUNITIOUTPUT CIRCUIT

BOARD UNITISIDE STAY ASS'Y)

. .

. . . . . . .

. . .

EXPLODED VlEW (SUBTRANSFORMER ASS'YI

ELECTROLYTIC CAPACITOR UNIT)

. .

PARTS LlST (SUBTRANSFORMER ASS1Y/

ELECTROLYTIC CAPACITOR UNIT)

. . . . . . . . .

. .

PARTS LlST (CIRCUITBOARD)

. . .

. .

. . . . . . . .

PARTS

slNcE

la-

YAM

AHA

NIPPON GAKKl

LTO HAMAMATSU,JAPAN

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