JVC PC-70L User Manual

PC-70 L/LB/LD/LS
Item
Description
4. FM RF ALIGNMENT
4-1 Conditions of the receiver.
(1) Power source:
(2) Function switch position:
(3) Band select switch:
(4) Volume control:
(5) SEA control:
(6) Variable capacitor:
4-2 Condition of FM SSG.
(1) Modulation:
(2) Frequency:
(3) Output level of the attenuator in FM
SSG:
4-3 Alignment:
Same as mentioned in item 1-1.
RADIO
FM
50 mW
Center position
Refer the following list shown in item 4-3.
Refer the basic condition
Refer the following list shown in item 4-3.
The level shall be decided by the load resistance of the receiver
mentioned in the basic conditions.
Dummy
eM Antenna
LEE
Positive side to TP5
Negative side to TP8
FM MPX Alignment
A. 19 kHz Alignment (Regular Method)
1. Connect a frequency counter to the test point TP7
(earth = TP3).
2. Supply the monaural signal (98 MHz, 60 dB) across
the antenna terminal.
3. Adjust the variable resistor VR1 so that the frequen-
cy becomes 19 kHz + 100 Hz.
Parts Arrangement for Alignment
(MW ANT) i (LW ANT)
apie aesee DTA
Band Select | Sort of Antenna to be F ‘ ah Aligning
Switch Position attached to SSG Frequency of FM SSG | verai Capacitor Position Position
87.5 MHz | Max. capacity | L5
109.0 MHz Min. capacity [| Tes
Ajust the above aligning position (L5 & TC-5) repeatedly so that
the tuner can be received above frequency range (band width).
90 MHz to be received 90 MHz
106 MHz to be received 106 MHz
Adjust the above aligning position (L1 & TC-1) repeatedly so
that the tuner can be obtained the best sensitivity.
B. 19 kHz Alignment (Simplified Method)
1. Tune to an FM stereo broadcast.
2. Set the variable resistor VR1 to the minimum position
of the range in where the Lch and Rch selecting.
Note:
Attach a resistor (100 kQ) to the positive side cable
shall be led from counter input.
Dummy Antenna
16 (No. 1543)
=. FP =5
| ts Le
TC3
“Ee
ss{
{se}
}s3[|s2
|"
g
2
Be
Se
tw}
[mw
{sw]
[FM
Wy
ul
a
I
L2L3_
(FM
ANT)
(FM
IF
MONO
Le
cs
(LW
OSC)
Sw
14.
@D
@
[O]
(
[Q]
eswantr
Pr
16
@)
@rc7
fant
2]
TP-8
TC1(FM
ANT)
RS
R,+R,=802
"A"
=
TP-5
P-4
{
1
(swosc)
C5
Hgts
C=10 pF E — TP-8
(AMIF)S
16
[Q]us
C8
(FM
OSC)
=
p
(osc)
7
(Sw
OSC)
it
TI
R,
:
Output
impedance
of
S.S.G.
(MW
OSC)
(FM
OSC)
(FM
IF)
19kH
=
VRI
‘
ie
“ey
(19
kHz)
Fig.
22
R33
(AM 1F) (FM DISC) (FM/AM IF) Fig. 21

JVC PC-70L Specifications

General

Brand	JVC
Model	PC-70L
Category	Stereo System
Language	English