JVC KD-21 - Page 15

iilieeneidiaie aiiaeeeiemeine een ee
L-CH MIC
Standard Schematic Diagram
4. Red line............
(wide)
(on front panel)
X102 2sc1327 T.u
) voltage; at recording mode.
ICIOl_TA7I40P-B
pa eee ees
I
r \
Os
R-CH
+ R2Al 4.7K
| cen ==
| Lge? .
ee
a +
|
tg
JACK CIRCUIT
TAA338101-04
rp-------
|
[OY Ria 7K
MUTING Sw
9582-2
XIO3 asci3a4R.s |
25V
$103-2
000
lo33¥ 0.1K)
—_ Sov
SIOI-—I~ 9 201-1I*9
Si0O2—I~% 3 202-13
S103--IN 2 203-IN2
sio4—l 104-2
Ss!
s2-!
s2-2
$3
sq
“Bias Adjugtment
(normal for |Lch amd Rc |
VRI 1K.
og Rie | |RI7
rs z
A
8
3
Q
Ef
OME YOR o
{
woo --5
O.01IWE
Record Gain
1.
Black
print
are
shown
the
voltage
(V)
at
playback
mode
by
V.T.V.M.
and
red
print
are
shown
it
by
tester.
2.
Only
black
print
voltage
are
shown
it
by
tester
as
same
as
by
V.T.V.M.
3.
(
Red line....
Blue letter......
MAIN CIRCUIT TAA3381I0I-— 01
Cl25 | RI36 22K
| ¢l27 820P
RI37 150K
aw
CE |00OPF
pat 8
R42 C30
QO “vw
X6.amH o8k ado
ae
$201-9
0900
|
Had ot
2
g
2
xB
aan
REED SW CIRCUIT |
TAA338434-01 b-~-9----—>- -- O——
ci2
2204 | RO
cis aul sex ryt
TP
Woe
477 0A90 IRDIOE )
O01 VO6 ;
+? oe
spe
C3 0.01IMF
QOOOORO0)
Wo t¢ 32*voe
>
Fy ‘VO6B. 03 vO6B
'ev Sri cu
eg zy RS lea 0.0IMF
"BB 6.079 C5 0.0WF
07”| r6 aS 4h
y 04
oasd 4.7K CO OK a q-4
ive vo6B
See eee ee I a ae
05 VO6B
X3,X4 XI, X2 + > Py
2SC828RS 2SC18470.R
$3
SOLENOID
000 g7ai691zT
Pause SW = X5OI~ 505 ascszes.t Cc >
'c301 NE5S458
OED GD DED GDSDEMEDE
= —O
> mh I>t
R310 coe goo
100K BT bs ox gk
Of 9+8 BF ap
STS |B 9
R3i = &
120 R309 8 2
47K 8
1°48
c309T olxi8
0.047 0.027 .
oF | Be 8
x |
K
es a
— ee Ht Se
REC/PB SW AT "PB" MODE
EQUALIZER SW AT “NORMAL” POSITION
BIAS SW AT "NORMAL" POSITION
DOLBY SW AT “OFF” MODE
POWER SW AT “POWER OFF”
MOTOR & MUTING SW AT “MOTOR OFF, MUTING ON”
MUTING SW AT “MUTING ON“
PAUSE SW. AT "PAUSE OFF
VOLTAGE SELECT sw
KD- ISA/E. KD-21A/E ---220V
KD- 158 . KD-218 +: -240V
'
ROR
3
87oK
3
Seox
X501
=
X502
§
R503
;
tlesoy_(y~
1
INa733TS
aries
cS)
A)
|
esol,
p502
oa90
ov
|
CBI)
ep
bgt
y25v
vrso1|
|vrsoz
joe,
oy
as
O—_4
8
iW
125V
;
;
!
|
0504
10a90
Li
:
— I
oe J
° oa iS
fe} Q
~~
+
°o
a fo} a
°o a 9 £ ee ee
Li» @—
3 &
bbdod
oun aie ad
Multi-Point Peak Level Adjustment
CR USED NO
CR LACK NO
SW LACK NO
VOLTAGE
(VOLTAGE)
Fig. 15
— 15 —
BETWEEN
Rl02~ RI43, R202 R243
R30I R3IT R401 R4IT
RIT RSOI~ RSI
clots. Ct3t c2o1~ c231
C30I~ C315 C4a01~ C4I5
cia CcSOI~ C504
SI0I-4, 201-4
SWI-7, 20-7
S10i—8, 201-8
AT CrO2 POSITION
RIOI, R201, RI27, R227,R140,R240,RB,RI4
EACH POINT AND EARTH
ics50t
INDICATOR CIRCUIT
!
!
|
|
! NOTE: WITHOUT FUSE.
I POWER TRAWSFORMER |
H TAP 34830}-o1!
SS ee ee J
......9ignal via at playback mode
......signal via at record mode
Adjustments
DOLBY LAMP
REC LAMP
METER LAMP
METER LAMP
E AEE ow QS52325-006
“$4
VOLTAGE SELECT
KD-I5A/E |
KD-21A/E °° 220V
KD-15B |...
KD-21B AO.
POWER CORD
$0/b0HE
=
reap
+3 db |
IMuLT!
ab lingieatons
-Sdb
~10db