Tandy Radio Shack Realistic PRO-2021 User Manual

ALIGNMENT
ALlGNMENT AND TEST POl NTS
TC3 TB
®~
TC6
®~T7
T3 TI T2
~~~
TC4
®
T6 T4 T5 TC2
~ ~~~TPI
0----- o--!-- TP2
~ TC5~ I
T9 ~~
~TP5
TI3
~
Til
~
TI2
~
TIO
~
TP4
TP3
ALlGNMENT PREPARATION
Test equipment required
1. Oscilloscope (0 - 500 kHz, 0 - 50 MHz)
2. AC SSVM
3. DC SSVM
4. Frequency
Counter (200 MHz)
5. 8-ohm
dummy load
6.
Slow Sweep Generator with variabie marker
(10.7 MHz)
7.
VHF Sweep Generator with variabie marker
(30
- 54 MHz, 108 - 174 MHz)
8.
UHF Sweep Generator with variabie marker
(380
- 512 MHz)
9. FM Signal Generator
(30
- 54 MHz, 108 - 174 MHz, 380 - 512 MHz)
10.
AM Signal Generator (108 - 136 MHz)
NaTE1: 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 aspossible and still obtain usabIe output.
NaTE 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 wil! be lost
(end
wil! have to be re-programmed).
NaTE 3: For servicing VHF Mid band of European/Australian modeIs, see Appendix on page 43.
-8-

Tandy Radio Shack Realistic PRO-2021 Specifications

General

Brand	Tandy
Model	Radio Shack Realistic PRO-2021
Category	Receiver
Language	English