McIntosh MA6100 B, Информация о сервисе

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M A 6 1 0 0 S C H E M A T I C N O T E S
1. U n l e s s o t h e r w i s e s p e c i f i e d : R e s i s t a n c e v a l u e s are in ohms , 1/4 w a t t ,
and 10% t o l e r a n c e ; C a p a c i t a n c e v a l u e s smaller then 1 are in m i c r o f a r a d s
(µF); c a p a c i t a n c e v a l u e s greater than 1 are in p i c o f a r a d s ( p F ) ;
i n d u c t o r s are in m i c r o h e n r i e s ( µH) .
2 . P r i n t e d c i r c u i t board components are o u t l i n e d on the s c h e m a t i c s by
dotted l i n e s . The c i r c l e d numbers around the dotted l i n e s correspond
to the numbers on the PC Board l a y o u t s .
3 . The heavy l i n e s on the s c h e m a t i c s denote the p r i m a r y s i g n a l p a t h .
4. The t e r m i n a l n u m b e r i n g of rotary s w i t c h e s is for reference o n l y .
5 . A l l v o l t a g e s i n d i c a t e d on the s c h e m a t i c s are measured under the
fol1ow i n g c o n d i t i o n s :
6. In u n i t s w i t h S e r i a l No's below A E 1 4 5 3 ; C415 & C416 are 1000pF.
C413 & C414 are 1000µF and C407 & C408 are 470pF.
7. In e a r l y export u n i t s R429, R430, R447 & R448 are 47
8 . I n u n i t s w i t h S e r i a l No's below A E 2 5 5 7 ; C I 1 7 and C 1 1 8 are 1 2 p F .
9. In u n i t s w i t h S e r i a l No's below AE2075; R309 is D308. ( M c l n t o s h
P a r t No. 070-064)
10. I n u n i t s w i t h S e r i a l No's below A E 2 1 2 2 ; R 2 1 1 & R 2 1 2 are M c l n t o s h
P a r t No. 134-354 and R227 & R228 are M c l n t o s h Part No. 134-253.
1 1 . I n u n i t s w i t h S e r i a l No's below AE3988; R 4 2 1 , R422, R423 & R 4 2 4
are 100 5% 1 / 2 W ; R425, R426, R427, & R428 are u s e d ; D 4 1 7 ,
D 4 1 8 , D419 & D420 are not u s e d ; R437 and R438 are used and D 4 I 5
and D 4 1 6 are not used.
a . Use o f a n 1 1 megohm i n p u t impedance V T V M .
b . A l l v o l t a g e s ±10% w i t h respect t o c h a s s i s ground.
c. No s i g n a l at i n p u t t e r m i n a l s .
d. AC i n p u t at 120 v o l t s , 50/60 Hz.
e. Front p a n e l controls a t :
Volume F u l 1 y CW Tape mon. out
I n p u t s e l e c t o r Aux Tape copy out
Mode selector Stereo F i l t e r s out
B a l a n c e c o n t r o l Zero Phase out
Como F l a t Speakers out
Tone controls F l a t