Yamaha k 520

Page 1

STEREO CASSETTE DECK

'520

SERVICE MANUAL

33511159315 2 H $fi
54.8K

I E zJz/comEN'rs

TO SERVICE PERSONNEL ............ 1
REAR PANEL ....................... 1
BLOCK DIAGRAM ................... 2
SPECIFICATIONS .................... 2
625093161 [INTERNAL VIEW ........... 3
fi¥¥fifilDISASSEMBLY PROCEDURES- . . 3
Hfi [ADJUSTMENT ................ 4~ 7
SCHEMATIC DIAGRAM ............... 8

LSI DATA/IC BLOCK DIAGRAM/
COUNTER METER UNIT/WIRING

DIAGRAM .......................... 9
PRINTED CIRCUIT BOARD .......... 10/11
EXPLODED VIEW .................... 12
PARTS LIST .................... 13 ~ 19

W .YAMAIIA

NIPPON GAKKI CD.. LTD. HAMAMATSU , JAPAN
3 4K-722 tfi Pnnted .n 4an 84 3

Page 2

ITO SERVICE PERSONNEL

1, Critical Components information,

Components having special characteristics are marked A
and must be replaced with parts having specifications equal

to those originally installed.

2. Leakage Current Measurement (For 120V Model Only).
When service has been completed, it is imperative that you
verify that all exposed conductive surfaces are properly @

insulated from supply circuits.

0 Meter impedance should be equivalent to 1500 ohm shunted

bY 0.15uF.

o Leakage current must not exceed 0.5mA.

EQUIPMENT

UNDER TEST
WALL :!
OUTLET INSULATING TABLE

0 Be sure to test for leakage with the AC plug in both polarities.

.REAR PANELS
. GENERAL Model

mIerI-Imum-nm
.m

Im-uunmmu-aml
- nmmmmun. u...-

EUROPEAN Model

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m

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jigging.

Law... ~

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m
m
m
3
o

a.
a

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mum"

nit-m- 7...... .1 HR mm- M u

Inn-c «mm-u. "mm...- ..

O U.S.A. 81

u mu. m .- in nu.- u
m u u. .. mm

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Z

Tfl'm" "a .m- n .u

Illfllltiru um" I. . in Im- a
m m.- m min u u u um.

' DIN JACK: Except Australian model

5

AC LEAKAGE TESTER
OH EQUIVALENT