JVC KD-A77 A Service Manual page 20

KO-An A/B/C/E/J/U
Standard Schematic Diagram of KD-A 77
(Mecha. control circuit)
A
B
c
D
E
F
G
REMOTE CONECTQR
OMC 0888 -008
- Diode
CN-5
2
r
01005
To Amp
§1
CN-B
01
tA~Et-~~~J--+~
REC
01003
o
5
01006
FF
I
REW
01007
CN-9
8
IPLAY
STOP
IFF
5 fEW
4
"'~
4
31"EC
o
2
REC liE
VSTO~OOI:J
CONTROl SW ASS'Y
TIMER SW
C REC~6~l!O~~~O;)
rv:W4~
-
riMER sw PW B
I
0
L
I
r-
CN-8
I
4
•
I
6
I
N-
CN-5
3A
lA
2A
3
53
44 RI5270
4 RIG 270
52
RI? 330
@
!f
-g
44 R44 270
'"''
44 R45270
Cl
0.001
C2 oml
C3
C4 0001
C5 0001
C6 0001
07 IN34A
DB
09
IN34A
IN34A
r- ;:.. -,
I
Ir
o~
_ _ _ _ _
3 8
ME~ORY
sw pws
I :
28
4
R36 100 <NI
~
IC I
M 54410P
"
C23 IOtll6V
5
--
IC2 HD7404P
IC 2
PLAY
IC3 H0740QP
IC 3
D61N34A
R23
IK
6
R26
56
+C 16
looop
63V
02
152076
7
IC4 HD7400P
03)
RB
IN34A IK
X7
2SD468(B,C)
RIO
4,7K
X8
2SC 1162 (B,C)
8
XI
2SCII62(B,C)
R4
270
To Amp
A 8 E
I
! . r l
.-t~I~---{~--------------------------------r--------------t----------------t---~-----x~s--------------~2~SC~~8~
X9
v _
2SC45BPG(C,O) (C,DJ 250468 (8,C)
'-------------------------H-t---"
9
I
,
t
I"
·32
1 26
30
• 27
1 26
1 25
I
19
,I!"
• 18
278
I
12
1 "
~W4~
.J
~================================================================~+=t===~
~~~~ftRS~~~8ME~Coorn~8L~ ~--------------------------------------------~X~D~----~X~I~I-----X=12~----+H---------+~-+~~
CN-M4
4
CN-M3
4
CN-M2
PL3
CN-MI
MEMORY
sw
0852301-101
(STOP- OFF-PLAY)
- - - - . . 2SD468(B,C) 25C458PG 2SC458PG.(C_",,0'-l)
H-t------+--'
I
ToAmp
rrg
(e,O) r
F To Amp
I
53
~'o~~
L!"
022
I
IOEI
'F'Jld)~77/C/Ji-/U"--'==~
____
H
97 :
10
Ni
j:::::".
QSPOO29-001
L _
J
'~:;;;:::,
' - V M = S
HOLE IC PW B
IH
PL I
I
m 1606-00A
~711
1J.l50V
.,.
lOjJ H
DM603
IOEI-8
~MW~9 ~
vGP0201-005
TERMINAL ,P'NB
I
TISA
98
~ ~ '~""'I'
RESISTOR PW B
0: 31
PW B
L
F2(KD-A77/C/J/U wlthou1F2}
-
--
XI4
2SC 458PG (C,D)
XIS
2SC 458PG (C,D)
_...1
- Transistor- NOTE
No.4186
-- 20-
ALL VOLTAGES ARE MEASURED BY VTVM WITHOUT INPUT SIGNAL AT STOP MODE
UNLESS OTHERWISE SPECIFIED ALL RESISTORS ARE 1/4W.t5% CARBON RESISTORS
AND ALL CAPACITORS ARE SOV FIXEO CERAMIC CAPACITORS OR 50V MYLAR CAPACITORS
,UF UNFLAMABLE CARBCtIi RESISTOR
MF METAL FILM RESISTOR
{)M7
0 XIDEO METAL FILM RESISTOR
1_1." !20%
LOW LEAK CURRENT ELECTROLYTIC CAPACITOR
PP) POlYPRQPYLENE CAPACITOR
,PS; POLYSTYRENE CAPACITOR
"T_(v TANTAUJM SOLID ELECTROLYTIC CAPACITOR
"I,.~_
lOW NOISE CARBON RESISTOR
Red lines show
+
B circuits.
parts are safety assurance parts. When replacing those parts,
make sure to use the specified one.