JVC PC-X95B User Manual

C-X95 B/E/G/EN/GI |
@ Tuner Alignment
« Basic conditions
POWER SOURCE OF THE RECEIVER AC : 240 V (B) 230 V (E/G/GI/EN) 50/60 Hz DE: 12V
(Connect 47 Q resistor to Tuner Input.)
LOAD RESISTANCE OF THE RECEIVER 50 mW (0.39 V)/3 Q
MODULATION OF SSG AM : 400 Hz, 30 %, FM: 400 Hz, 22.5 kHz dev.
Description
1. AM IF ALIGNMENT
(The unit should not usually require adjustment. Follow the steps below when adjustments are necessary.)
1-1
Conditions
of
the
receiver
:
(1)
Power
source:
7.0V
DC
(When the power is supplied directly to the tuner in the receiver, the
voltage should be adjusted to the proper level which shail be required
by the tuner.) (Connect 47 Q in series when applying 7 V to tune unit)
(2) Function switch position: TUNER
(3) Band select switch: MW
(4) Volume control: Minimum gain position
(5) BASS/TRE control: Center position
(6) Reception frequency: Set the reception frequency to the highest position and to the position
where the signal does not enter. .
1-2 Connection of sweeper and the receiver
(1) Tuner input: Positive side to TP3
(2) Tuner output: 450 kHz (455 kHz) Positive side to TP6, Negative side to TP7
1-& Aligning position: T2 :
1-4 Alignment (waveform): Adjust MW IFT (above mentioned aligning position) so that maximum
and symmetrical waveform can be obtained. in this case, the wavehead
should appear at the center marker (450 kHz) on the scope of sweeper.
2. FM IF ALIGNMENT
(The unit should not usually require adjustment. Follow the steps below when adjustments : are necessary.)
2-1 Conditions of the receiver
(1) Power source: Same as mentioned in item 1-1
(2) Function switch position: TUNER
(3) Band select switch: FM
(4) Volume control: Minimum gain position
(5) BASS/TRE control: Center position
(6) Reception frequency: Set the reception frequency to the highest position ante to the position
; where the signal does not enter.
2-2 Connection of sweeper and the receiver
(1) Tuner input: Positive side to TP5
(2} Tuner output: Positive side to TP6, Negative side to TP7 |:
Note: a) Attach a capacitor (30 pF) and resistor (83 kQ) to the positive side cable which shall be led from. sweeper output.
b) Attach a resistor (100 kQ) in series to the positive side cable which shall be led from sweeper input.
2-3 Aligning position: ; Discriminate waveform : T1 (’S" curve waveform)
2-4 Alignment (waveform): - 1. Disconnect CF3 to change waveform from S-curve (Fig. B) to
1O7--. - ; singlepeak waveform (Fig. A).
; ; ; “1-2. Turn T1 to shape waveform so that it peaks i in the center (10.7 MHz)
aS of the waveform and is symmetrical in both sides:
; 107 Mee 3. ‘Connect CF3 again and confirm that waveform returns to the original
(Fig. B).
Fig. B ‘
m@ Adjusting Parts Location
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(REC/P LEVEL ADJ}
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Fig. 3-4
22 (No. 1859)

JVC PC-X95B Specifications

General

Brand	JVC
Model	PC-X95B
Category	CD Player
Language	English