Pioneer SA-506 Panduan Servis - Halaman 17

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7. SCHEMATIC DIAGRAMS, P. C. BOARD PATTERNS

AND PARTS LIST

NOTE:

o When ordering resistors,first convert resistance ualues into code form as shown in

the following examples.

Ex. I

When there are 2 effective digits (any digit apart from 0), such as 560 ohm

and, 47k ohm (tolerance is shown by J = SVo, and K = lOVo).

5 6 0 a - 5 6 x 1 0 t - 5 6 1

. . .

R D I / I P S E G I E J

4 7 h a - 4 7 ) 4 1 0 1 - 4 7 3

. . .

R D \ / I P S E A A @ J

o . 5 s r - 0 î 5

. . -

. . .

R N 2 H @ I E @ K

1 a - 0 t o

. _ .

. . R s r P @ / n @ K

Ex. 2 When there are 3 effectiue digits (such as in high precision metal film

resistors).

5.62ha

562 x IOt

5621 . .

ENVrS.R Etd[lm r'

o The A mark found on Eome component parts indicates the importance of the

safety factor of the pa.rt. Therefore, when replacing, be sure to use parts of

ide n tic al de signa ti on.

7 . 1 M I S C E L L A N E A

Miscellaneous Parts

P.C. BOARD ASSEMBLIES

Part No.

Description

FUSES

Part No.

Symbol & Description

GWK.120

GWS-146

GWX.2O2

GWX.2O3

GWX.2O4

GWX-205

SWITCHES

Part No.

A F a m p l i f i e r a s s e m b l y

Meter and speaker assemblv

Headphone assembly

Volume control assembly

I n p u t a s s e m b l y

Fuse assembly

Symbol & Dascription

l\ aer<oz

A, AEK-o42

O T H E R S

Part No.

F U 1 . F U 2

F u s e T 1 A

FU3, FU4

Fuse T3.15A

Symbol &Doscription

I nrr-sss

AÉL.308

T 1

D 1

Power transformer

D i o d e ( L E D )

A AsA-sos

d, arcx-osz

2SA726S

2SC1919

2SA798

External Appearance of Transistors

L e v e r s w i t c h ( P O W E R I

Line voltage selector (2-positionl

2SC1438

2SC1318

2S8616A

25D586A

s 1

S 7

B t

ffii

2SA850

2SC1735

C t