Yamaha K-1020 Service Manual

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STEREO CASSETTE DECK
K-l 0n
I FRONT PANEL
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IJITPORTANT NOTICE
Th is manu al has bec n pr ov i dc d for the use of author ized Yamaha Re ta iler s and their service p e rso n n el.
I t h as been as s umed that bas ic ser vicc pr occdure s inhc rant to the industry, and m ore spec ifica lly Yama h a
Pr od u c ts , are al rc ady k now n and under stood b y the users, and have th erefor c not b een r cstatcd.
W ARN IN G :
F ai lur e to follow app ropr iate ser vice and safety proced ures w hcn ser vicing t h is p ro d u ct
may re s ul t in per sonal iniur y, dcstr uction of ex pcnsivc componen ts and failu re o f th e
produ c t to perfor m as specificd. F or thesc reas ons, we ad visc all Yam aha pro duc t o wn e rs
th at al l s er v icc r equired shou ld be per fo rmed by an author izcd Yamaha R et a iler o r th e
dppoi nted rer vice r epr erentativc.
I MPOR T AN T :
Th e p res c nt ation o r salc of this manual to any individual or fir m does no t c on st itu t e
authori z ati on , ccr tifica tion, re cognition of any applicable technical capab ilitit e s, o r
es tabl i s h a principle agent r elationship of any for m.
Th c d ata pro v id ed i s bel ic v ed to be accur ate and applicable to the unit/s indicatcd on the co vcr. Th e
rc sca rc h, engi neeri ng, and s c rvice departme nts of Yam aha are co ntinua lly str iving to im pro ve Yama h a
p ro d uc ts . Mod ifi c ati ons are, ther efor e, inevitable and changes in spe cification ar e s ubject to chan g e wit h ou t
n o tic e or obl i Sati on to retrofit. Should any discre pancy a ppcar to exist, please contact the dist rib ut o r's
Se r vi c c D i v i s i on.
Stati c di s c har gcs can destro y exper r siv e com ponents. D ischar ge an y static electricit y yo u r
body m ay have accum ulated by gr ounding yours elf to the grou nd buss in the u n it (h e a vy
gauge bla c k wir es co nnect to this bus s).
Tu rn the u nit OF F during disassembly a nd par ts replac ement. Rechec k all w o rk b e f ore
y ou ap ply pow er to th€ unit.
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I CONTENTS
T OS E R V I C EPE RS ONE L ... .. ... 1
R E A R P A N E L S... .. .. .1
B L OC K DI AGRAM . .. ... 2
S P E C| F | C A T | ONS . .. ... .3
I N T E R NA L VIEW . .. ... .3
D I S A S S E M BL YP ROC EDUR ES . ... .. 4-6
M E C HA N I CAL A DJ U ST MENTS. 7 -9
E L E CT R I CAL A DJ UST MEN TS . . ... 9-11
LS I D ATA TA BL ES
1 2
TIMIN GCH A RT . .. .. .. 13
PR IN TED C IRC U IT BOAR D (Pa tte rn S i de ) . . 14 - 1 7
w tRtN G . . . . . . . 1 8
fcBLo cK .. 19 - 21
S CH E MA TIC D IAGR AM
. .. .. 22 ,2 3
PA R TSLTS T. . 24 -3 6
SINCEI'87
@YAMAHA
NIPPON GAKKI CO., LTD. HAMAMATSU, JAPAN
2.5k 533 El @ Printed in Japan. '85 . I