JVC KD-A77 A User Manual

KD-A77 A/B/C/E/J/U
Standard Schematic Diagram of KD-A 77 (Amplifier circuit)
A
B
c
D
E
F
G
L - C H
R- CH
L I NE
OJT
1 N
I
, VMWI528
RI02
33K
RI04
rSOK
18K
2
X 701
2SC 1344(E,F)
7.3 R96f rSK
IC911
UPC4558C
3
X702
2SC458PG(C,O)
Roh
4
PB EQ.Adj.
0911
., INPUTLEVEL _Input Level Control
(_...w'::':"T <WE"A3A-054F (on the front panel)
TAT0003SI-OI
5
ANRS Adj
XGO I
2SD468(B,C)
6
IC JOI
UPC4558C
7
X301
2 SC458A (c,O)
Meter G
8
X 911
2SA 844 (C;ol
A from
MECHA CON
c
X912
2SC458PGCC,O)
9
X303
2SD468/a,C)
-
le 912
Roh
eN-AS
L
rr~~~~~~*RAI~5 ~~~~~~~~~~X~7--
[gJ
~
2
X~2 X SOl
2SC458PG(CPJ 250468 (B,C)
8-{J---.'W'-+t:
;;
~
,.
~
NOTE
Recording Level Adj.
X904
2 5C458 PG(C,O)
IC~2
UPQ4066C
470 25D468(I:\C)
XS02 XS03
2SCI344(E,F) 2SC 458 (C,O)
Output Level Adj.
(on the front panel)
VSK5D24-211
- eN AZ
R915 rOK
X905,XOO6 2SC 1685(S}
REC HEAD
VGH0425 -3QI-OA
R 1/2 CN-A 3 ERASE HEAD
R75
270
10
I METAL
er 0"
I SUPER
.J
ANRS
from MECHA CON I§]
CN- A4
-2
1-7
076,77
SL8-26URIN
075,78
SLB-26GGIN
ALL VOL TAGES ARE MEASURED BY YTYM WITHOUT I NPUT SIGNAL AT STOP MODE - Diode-
- Transistor-
;~ cMM0904I4-0A
I 2 Automatic CrOzSelect P. W B
f[iiiJl (M_NORM)
UNLESS OTHERWISE SPECifiED ALL RESISTORS ARE 1/4 W,:t 5% CARBON FlESISTORS
AND ALL CAPACITORS ARE 50Y FIXED CERAMIC CAPACITORS OR SOY MYLAR CAPACITORS
u ~ QSPOO29-001
b1w~d
UF UNFLAMABLE CARBON RESISTOR
'MF METAL FILM RESISTOR
t:wIF OXIDED METAL
FILM RESISTOR
\_LL !:20% LON LEAK CURRENT ELECTROLYTIC CAPACITOR
P.P POLYPROPYLENE CAPACITOR
Blue line shows the signal at playback.
LN LOW NOISE CARBON RESISTOR
Red line shows the signal at recording and + B circuits.
parts are safety assurance parts. When replacing those parts, make sure to use the specified one.
,PS POLYSTYRENE CAPACITOR
'Ta TANTALUM SOLID ELECTROLYTIC CAPACITOR
-19 -
No.4186

JVC KD-A77 A Specifications

General

Brand	JVC
Model	KD-A77 A
Category	Cassette Player
Language	English