Yamaha K-1020 Service Manual

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IJITPORTANT NOTICE

This manual has bec n provi dc d fo r th e u se of au tho r i ze d Y am ah a R e ta i l e rs a nd th ei r s er v i ce p e rso n n e l .

I t has been ass umed that basi c s e rv i c c p r oc c d ur es i n hc r an t to th e i nd us tr y , a nd m or e s pe ci fi ca l l y Ya ma h a

P roduc ts , are al rc ady k now n and u nd er s too d b y th e us e rs , a nd h a ve th er e fo r c no t b ee n rc s tatc d .

W ARN IN G:

F ailur e to fo l l o w a pp r op ri ate s e r vi ce an d s afe ty p r oc e du re s w h c n s er v i c i n g t h i s p ro d u c t

may resul t in p er s on al i ni u r y, d c s tr u cti o n of e xp c ns i v c c o mp on en ts an d fa i l u re o f th e

produc t to per for m as s pe c i fi c d. F or th es c r e as on s , w e ad v i s c a l l Yam ah a p r od u c t o w n e rs

that all servi c c r eq ui re d s ho ul d be pe r for me d b y an au tho r i z cd Ya ma ha R e ta i l e r o r t h e

dppointed r er v i c e re pr e re n ta ti v c .

IMP O RT AN T :

T he pr es cntati o n o r s al c of thi s m a nu al to an y i n d i vi du al o r fi r m d o es n o t c o n st i t u t e

authori zatio n, c c r ti fi ca ti o n, r ec o gn i ti on o f a ny a pp l i c ab l e te ch n i ca l c ap ab i l i t i te s, o r

establ is h a pri n c i pl e a ge nt r el a ti on s hi p o f an y for m .

Thc data prov ided is belic v ed to be ac c ur a te a n d a p pl i c a bl e to the u ni t/s i n di c a tc d o n th e c o v c r. Th e

r cscar c h, engi neeri ng, and s cr v i c e de pa r tme nts o f Y am ah a ar e c on ti nu a l l y s tr i v i ng to i m pr o v e Ya ma h a

pr oducts . M odific ations are, the r efo re , i n ev i ta bl e a nd c h an ge s i n sp e ci fi c a ti on ar e su b j ec t to c ha n g e w i t h o u t

not ice or obliSati on to r etrofi t. Sho ul d a ny d i s c r ep an c y ap pc a r to ex i s t, p l ea s e c on ta c t th e d i s tri b u t o r's

Serv ic c D iv is ion.

Static di sc har gc s c a n d e str o y e x pe rr s i v e c om po n en ts. D i s c ha r ge an y s ta ti c e l ec tri c i t y y o u r

body m ay hav e ac c um u l ate d by gr o un di ng y o ur s el f to th e g r ou nd b us s i n the u n i t (h e a v y

gauge blac k w i re s c o nn ec t to thi s bu s s ).

T ur n the uni t OFF d ur i n g d i s as s e mb l y a nd p ar ts r ep l ac e me n t. R e ch e ck a l l wo rk b e f o re

y ou appl y po w er to th € un i t.

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I CONTENTS

TO SE R VIC EPERSO NEL

. .. .. ...1

R EA R PAN ELS...

... ..1

BLO C KD IAGR AM

.. ... .2

SP EC |F| CA T| ON S.

... ... 3

IN TER N AL VIEW .

... ... 3

D IS AS SEM BLYPR OC EDU RES

.

... ..

4 -6

M EC H AN IC ALAD JU STM ENT S.

7 -9

E LEC TR IC ALADJ US TME NT S .

. . ..9 -1 1

L S I D A TA T A B L E S

1 2

T I M I N G C H A R T

. . . . . . . 1 3

P R I N T E D C I R C U I T B O A R D ( P a t t e r n S i d e ) . . 1 4 - 1 7

w t R t N G

. . . . . . . 1 8

f c B Lo c K

. . 19 - 2 1

S C H E M A T I C D I A GR A M

. . . . . 22 , 2 3

P A R T S L T S T .

. 2 4 - 3 6

SINCEI'87

@YAMAHA

NIPPON GAKKI CO., LTD. HAMAMATSU, JAPAN

2.5k 533 El @ Printed in Japan. '85 . I