Schematic Diagram - Akai AC-220 Service Manual

AC=220
~4C=320
KEY/DISPLAY SCHEMATIC DIAGRAM
CN401 TO CN305
POnR AJIP/EQ P.C.B
RH
Rs
8 9
r~1o,
iii
!
11
I!~
I
0
!!
• ii!
REMOTE
SENSER
-
R429
~n;1~~ R441
~
560
f ( R435
750 1/4\,'
560
D401
~ R459
D41f~~
E§
.
,---0 ~S;:1413 D402f (
~
9014C
~
lK
C403j_
R492:•
---;=;0
~
e,...
Gl401
'
0.01 - - 4.7K R430
...
C420
..
~ ~
t-
56_0.
m
~'""'
l40!
t
C401
0.22/SOV ... ex,
......
~~~414
• n
Gl407
lOOUH
90!4C
-Q
~S~402 f;i R436
6
0,1
R477
C405
R479
l;JR480
~
0408
~r-;-o:;
11....---0 t
D403S~
~:
560
K
2cM 22P(J) 2.2K '•
4.7K
~~ ~
.
;
~
...
~
-
.u.
.L
ig ~.
R460
n
D42!
"'ai
:'o'~~415
D404f
~~ ~
lK.
o~T
IN4148
,.,.,
rh
~~S~403
~~4ll
~ 9014C
~
:4;i[)~
D~
~
Gl402
"
X402
R493
.__~ ~ ~~
0
......_ h,.o
fl
R431 ,-,-,
8MHz
!OK
ru "'
-·~ ,.... 0
0
~~S~4!6
C402
,{)~!
... r--
560
11
~~
~W404
◄~~~412
47/6,3
R449
...
I
~sl
~~ ~
f--0
fl
D416
N
4K.~
X401
--~
~
>-f--0 ...
.__
D405f
~
~ iG 9:
• R437
_....,.,.,
....
1~H~rZ>--AZ>--
32.768KHZ
C
=
560
. .
I
IC401
I
~
::i5:c5~c
~~a~
Sl.'408
ti
R49:S
~
>C ~&..
:,:,,:
~~ R452 .;
ST24COI
>--
-
IK
CD
PHIJT□
IN
~ d >-<
s
D406JG~ 9014
~
1 ~.
I
R 4 4 2 ~
0
\.ill: TAPE 51
33K
..AA SEL B
TUNE:R
' !
~
Rl>I
CU( CD!
R4!6
R432 Gl403
co
,:::y ~
"'
- ...
RIJ4
DATA
c:oz
R413
R414
R415
...
R496 SELA
CD3
560 r.'7
...
"' ,.. ru
..,. ru
.
3.3K 3.3K 3.3K
3,3K ~
"'
-
C<(lj
"' cu
IK
VOL
STB S-BASS
~ VOL DATA
DIGI
It "" VIL CLilC1<
DIG2
D4I7
R438
~
'NCA
0 R497 R499
PLL DUT
DIG3
D407f
G ~
1G
~:
~
PlL CLOCK
fi~
560
!OK 10K PLL IN
PLL CE DIG6
~
' - - ,
R453 ~
TUNER MUTE
IC403
D!G7
-
.tR49B(G
CD PCNER D!G8
s
D408;Q~ 90!4C
~
!~ ••
-
Gl410
MDTllR CNT4
M3B1B4-XXXFP
llIG9
k)~~421 ,
kl
~~423 •
~
~S~426
MOTOJ! CNT3
DIG10
H) ~Sr17
Gl404
..
'
~
9014C MOTtJI CNT2
DIGII
R433
MOTIR CNTI
DIG
~~~
h::D
ii!
CD 1CRS[T D!Gl3
'--
f-;.O~
,_
1--::0
s ~
560 ' "
' lOK
CD MUTt DIG14
~ ~
o:; "'
~~
~
,.,
CDSQSO DIG15
-
~
'
N.C DIG! ... C\J ... C\J
....
D41B
R439 CD SQCK
SEGI
~ru~Sl.'418
~~~421 . ~~~42• • ~~~427
...
D409JG
~
fQ
~:
TRK ~llJ SET
SEG2
.
560
~I
R4'5 OVER LllAD IN S£G3 ~
CD D~TA
SEG4
._
~I a ,_ ~
I.. ........
""' °
e
~
R454
!OK
CD Ct.I(
....
SEG5
~I
' - - ,
CD XL7
1:4
SE
N
>
ru "'
;~
~
D4101
G
9
9014C ~ l K _
I-,
-
- KEY 1
>--
SEG
◄
...
,-.
...
,-.
.... r--
(.)
~~S~419
~~t4e, ,
w~~42"
I
~~1,'428
~
~~ICEY2
~
5
~ SEGB
'
'
~~· ~~ili:~~~i~~~§
I I I I
I
I I
I
k )
i
0405
-
k)
~
-0 cl -
k) 5
L -
R434 ,-, •
.........
~ >
500
...
,
I I
i
1
..
tiG
D41!
f
G
~:
R440
R425 R426 R427 R428 560
R445
R447 •R490
!OK
....
4.7K ~
R450
FLT
lOK !OK
!OK
t")
' - - ,
R455
4,7K
...
"'
s
D412
!G 9
~ I K
~~
R473
!OK
90!4C
lUK t:i
..
0406
'
>
l",7
► •R491
*tfZ
MIC VOL
... .,
"'
E
HI
SW:~
.I._
► ►
►
f
!;i
"' "'
C410
C411
" " "
0,01 47/6.3 MIC JACK
□~~
*
' r-0 I ' '
'
'
.fTlllTl"--i
--
-
. .
"~
R463 R464R465 R466 R467 R468 R469 R47~ ..
C421 ~ R474
•R•Bo
*RU1
TUNlfR VERSION
47K 47K 47K 47K 47K 47K 47K 47K
4700P<H>
lOK
OPBN
0
B BAND
.u,,,..nr
ll'l'EP:6,,.,,_r,1/C
,_,
...
B,2C 1L41C
-
MIC Slol
6.61{ 8IC IIBAND
,_,
4.
?E 4.1K II BAND 'IC/ISK
11K IS.a
JI
11AND
nr/111T
S'J'ZP:t0Oir/lOK
/Ult' B.RIC -
0
OPEN -
AKAl-01249 / Druck 1
39