JVC PC-X95B - Main Adjustment; CD Player Adjustment

'C-X95eecewai
Main
Adjustment.
H Measuring Conditions
e
Supply
voltage
:
100-120/220-240
V
AC,
50/60
Hz
(J
only)
120
V
AC,
60.Hz
(C
only)
e Reference output: Speaker 0 dBs (0.775 V)/3 Q
Headphone: 0 dBs (0.775 V)/32 Q
Test point (CNTP1): -30dBs — cntP1
Test point (CNTP1): -50dBs [[o_9 of}
© Reference input:
GRL
(REC/PB characteristics check input)
e Switch setting FUNCTION switch TAPE
MODE switch STEREO
TAPE SELECT switch : NORMAL
BEAT CUT switch POSITION 1 or
NORMAL
DUBBING SPEED switch : NORMAL
e Volume setting : BASS/TREBLE: Center
MAIN volume : for 0 dBs output level
® Tape to be used:
- Normal tape for REC and PB
- Test tapes
VTT712
(3
kHz,
0
dB)
for
measurement
of
wow
&
flutter, tape speed
V11724 (1 kHz, —4 dB) for standard level adjustment
VTT703 (10 kHz, -10 dB): for azimuth adjustment
V1T736
(8
kHz/1
kHz/125
Hz):
for
measurement
of
PB
fre-
quency response
@ CD Player Adjustment
*
Torun
CD
player
individuaily
for
adjustment:
(1)
Supply
+6
V
DC
power
from
the
regulated
DC
power
supply
to
the
line
between
+B
and
DG
of
FW601
on
the
CD
board
(VMW1293),
or
connect
the
pin
5
of
FW601
on
the
CD
board
(VMW1293)
and
the
amp
board
with
the
provided
extension
cord
to
supply
+6
V
DC
power
for
adjustment.
(2)
Apply
load
resistance
of
47
kQ
to
the
audio
output.
1h
(3)
When
loading
a
disc,
use
the
magnet
clamper
provided
with
the
set
or
equivalent.
TP502
FW601
CD BOARD
20 (No. 1859)
e Attentive point
- Connection of IF sweeper:
Connect a 30 pF capacitor and a 33 kQ resistor in series
to the sweeper's output while 0.082 uF capacitor and a
100 kQ resistor in parallel to the input.
- IF sweeper's output level:
Set as minimum as enough for adjustment.
Loop Antenna
60cm ;
Fig. 3-1
Dummy antenna for short wave.
BAR ANT.
Rod
length
L>90
|
90>L>60
L<60
|
(cm)
[
[ci
(Pe)
10
8
e__|
R1 + R2 = 80 QA : Output impedance of SSG.