Panasonic SG-1800C Servicehandleiding - Pagina 4
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ALIGNMENT INSTRUCTIONS
® RADIO ALIGNMENT-1
Controt Positions:
Volume Control
. . Maximum (AM-4F and RE, FM-RE}; Minimum (EM-1F)
Treble Control...
Canter
Bass Control
. Center
Balance Control
. .
Center
Function Selector
.
Radio
Power Switch...
. ON
Speaker Switch...
A
Loudness
......
OFF
Band Selector... . MW,SW1,SW2,FM AUTO, FM MONO
Output of signal generator should be no higher than necessary to obtain output reading.
Make certain that spaaker system is connected to the receiver when aligning. (or use 82 dummy
toad resistors).
PP
BONAASWN
=
— =.
SIGNAL GENERATOR or
SWEEP GENERATOR
_
INDICATOR
(VTVM or SCOPE)
RADIO DIAL
SETTING
AbIvst
REMARKS
CONNECTION
FREQUENCY'
Fashion
loop of several
turns of wire and radiate
signal
into
foop
of
receiver,
Connect to EXT antenna
and
ground
through
SW
Oummy antenna.
4
To
20,
.
To SG 4,
Receiver
i 1259F
32011 400pF
(Sw2)
|
OUMMY
ANTENNA
465 kHz
30% Mod.
with 400 Hz
AMF AND RF ALIGNMENT
Point of non-
Interference
550 kHz
30% Mod.
with 400 Hz
}
550 kHz
(18.3 mm)
1500 kHz
30% Mod.
with 400 Hz.
2.3 MHz
30% Mod.
with 400 Hz.
7 MHz
30% Mod.
with 400 Hz
1500 kHz
(157.4 mm}
Output meter across
speaker jack (L) or
2.3 MHz
TP2 and TP3 (earth)
(7.0 mm)
7 MHz
(168.8 mm)
7 MHz
(6.3 mm)
22 MHz
30% Mod.
f with 400 Hz. |
22 MHz
(168.1 mm)
7201 (MW 3st IFT)
1202 (MW 2nd IFT)
1203 (MW 3rd tFT)
Adjust for maximum
output.
L201 (MW ANT Coil)
£204 (MW OSC Coil)
Adjust for max imutn
output by sliding coll
L201 along ferrite core.
@ Refer to Note.
C¥202
(MW ANT Trimmer)
CT204
(MW OSC Trimmer)
£202 (SW1 ANT Coil)
L205 (SWf OSC Coil)
Ct201
(SW1 ANT Trimmer)
C1205
(SW1 OSC Trimmer)
Adjust for maximum
output,
Repeat steps (2}
and (3),
Adjust for maximum
output by sliding coj!
1.202 atong ferrite core.
* Refer to Note.
Adjust for maximum
output.
Repeat steps (4) and
(5).
£203 (SW2 ANT Coil}
1.206 (SW2 OSC Coil)
Adjust for maximum
output,
C¥203
(SW2 ANT Trimmer)
CT206
(SW2 OSC Trimmer)
Note: Cement antenna coil with wax after completing alignment.
SG-1800/SG-1800P/SG-1800C
Adjust for maximum
output.
Repeat steps (6) and
(7).