General Alignment Instructions - Realistic TRC- 9A/1 1 Service Manual

GENERAL ALIGNMENT INSTRUCTIONS
Test equipment required
1 RF standard signal generator (S.S.G.)
2 AF signal generator
3 V.T.V.M.
4 RF power meter
5 Oscilloscope
6 Monitor receiver
7 Frequency counter
8 1A DC ammeter
9 8 ohm dummy load
Note: Keep the input signal from S.S.G. as low as possible during all alignment.
RECEIVING SECTION ALIGNMENT CHART
STEP
CONTROL
SETTING
TEST
EQUIPMENT
CONNECTION
SIGNAL
GENERATOR
SETTING
ADJUST REMARKS
1
Volume control:
Fully clockwise
SQ control:
Max. counter-
clockwise
CH: A position
27.065 MHz
(TRC-9A)
27.085 MHz
(TRC-11)
V.T.V.M.:
Parallel with 8 ohm
dummy load connected
to J2
Signal generator:
through 100 pF to the
base of Q2 2SC371
Freq: 455 kHz
Mod.: 1 kHz 30%
T3 (YEL)
T4 (WHT)
T5 (B LK)
Max. output on
voltmeter
2
fl
V.T.V.M.:
Parallel with 8 ohm
dummy load connected
to J2
Signal generator:
to J1
Freq.: 27.065MHz
(TRC-9A)
27.085MHz
(TRC-11)
Mod.: 1 kHz
T1, 2 Max. output on
voltmeter
3
Volume control:
Adjust for desired
audio level
SQ. Control:
Fully clockwise
V.T.V.M.:
Parallel with 8 ohm
dummy load or across
speaker to J2
Signal generator to J1
Freq.: 27.065MHz
' (TRC-9A)
27.085MHz
(TRC-11)
Mod.: 1kHz 30%
Output: 500µV
R34
Adjust so squelch
just opens