Realistic PRO-2021 - Alignment; Alignment Preparation

ALIGNMENT
ALIGNMENT AND TEST POINTS
TP4
TP3
а
N
E
|
0 v
юз
ALIGNMENT PREPARATION
Test eguipment reguired
1.
Oscilloscope
(0
~
500
kHz,
0
~
50
MHz)
8.
UHF
Sweep
Generator
with
variable
marker
2. ACSSVM
(380
~
512 MHz)
3.
DC
SSVM
9.
FM
Signal
Generator
4.
Frequency
Counter
(200
MHz)
(30
~
54
MHz,
108
~
174
MHz,
380
~
512
MHz)
5.
8-ohm
dummy
load
10.
AM
Signal
Generator
(108
—
136
MHz)
6.
Slow
Sweep Generator
with
variable
marker
(10.7
MHz)
7.
VHF
Sweep Generator
with variable
marker
(30 ~ 54 MHz, 108 - 174 MHz)
NOTE 1: Use non-metallic tuning tools.
The
test
equipment
and
Receiver
should
be
warmed
up
at
least
30
minutes
before
proceeding
with alignment.
Input
signal
from
the
Generator
should
be
kept
as
low
as
possible
and
still
obtain
usable
output.
NOTE
2:
Three
silver
oxide
batteries
are
required
to
hold
the
memory
when
main
battery
is
disconnected.
Always
be
sure
the
unit
is
loaded
with
fresh
batteries
or
the
pre-programmed
channels
will
be
lost
(апа will have to be re-programmed).
NOTE
3:
For
servicing
VHF
Mid
band
of
European/Australian
models,
see
Appendix
on
page
43.