Quantcast Section IV. STAGE ANALYSIS OF TEST SET, RADIO  TS-1962/ARC-51X

 

Click here to make tpub.com your Home Page

Page Title: Section IV. STAGE ANALYSIS OF TEST SET, RADIO TS-1962/ARC-51X
Back | Up | Next

Click here for thousands of PDF manuals

Google


Web
www.tpub.com

Home


   
Information Categories
.... Administration
Advancement
Aerographer
Automotive
Aviation
Construction
Diving
Draftsman
Engineering
Electronics
Food and Cooking
Logistics
Math
Medical
Music
Nuclear Fundamentals
Photography
Religion
   
   

 

Share on Google+Share on FacebookShare on LinkedInShare on TwitterShare on DiggShare on Stumble Upon
Back
Readout Mechanism (cont)
Up
TM-11-6625-564-45 Maintenance Kits Electronic Equipment MK-731/ARC-51X Manual
Next
FUNCTION SELECT Switch S4
TM 11-662-546-445
XIX.XX, as shown in figure 4-9. (Entire fre-
wires 10-B and 10-C. (Note in the chart that
quency setting of readout mechanism in figure
for 33X.XX, control wires 10-B and 10-C are
4-9 is 211.10 mc.) The tens dial is positioned
grounded also, since the tens digit is the
to indicate a 1, and the tens-digit Autoposi-
same.) In figure 4-9, which shows the tens-
tioner is not operating. The tens-digit Auto-
digit Autopositioner set at 1, there is no
positioner is not operating because there are
groundpath for control wire 10-B to motor-
no closed groundpaths through switch seg-
control relay K2; although the 10-B ground-
path is completed from pin U of J1 and
ment S2 rear to motor-control relay K2. With
reference to the chart in e above, the two tens-
through contacts 4 and 3 of S3 rear, contact
digit control wires which carry a ground for
4 of S2 rear is open. But a groundpath is
31X.XS mc are control wires 10-A and 10-B.
completed by control wire 10-C from pin T of
W ith reference to figure 4-9, it is seen that
J1, through contacts 6 and 1 of S2 rear, to mo-
control wire 10-A (pin V of J1) is closed at
tor-control relay K2. This starts the tens-
contact 1 (slider) of switch segment S3 front,
digit Autopositioner, and the Autopositioner
and that contact 2 of S3 front provides a
operates as explained in h and i above. when
open-seeking switches S2 and S3 rotate to the
groundpath to contact 2 of switch segment S2
position where the groundpaths for the 10-B
rear. At S2 rear, contact 2 of S2 rear is open,
and 10-C control wires are both open, the tens-
and the groundpath is not completed to motor-
digit Autopositioner comes to rest (i above),
control relay K2. In the same manner, the
and the tens dial indicates a 3.
groundpath through control wire 10-B (pin
l. The three other Autopositioners operate
U of J1) is completed through switch seg-
in the same manner as does the tens-digit Au-
topositioner. Any number of the Autoposi-
ment S3 rear, but the path is broken at S2
tioners can operate at the same time, and one
rear. Since none of the other three control
Autopositioner can come to rest before one or
wires (10-C, 10-D, and 10-E) are grounded,
more of the others do. Diodes CR1 through
there is no groundpath to motor-control relay
CR4 provide isolation between the solenoids
K2, and the tens-digit Autopositioner is not
(L1, L2, L3, and L4) of the Autopositioners by
operating.
preventing the energizing of a solenoid in
k. Now assume that
a new frequency selec-
one Autopositioner from also energizing the
tion is made in which
the tens digit changes
solenoids in the other Autopositioners. Lamp
from a 1 to a 3. With
reference to the chart in
DS4 indicates a 0 when ground is applied to
e.
above,
the
two
tens-digit
control
wires
control line .00-.05 (pin S of J1) and a 5 when
which carry a ground
for 23X.XX are control
control line .00-.05 is not grounded.
Section IV. STAGE ANALYSIS OF TEST SET,
RADIO  TS-1962/ARC-51X
1-21. General
bench  +27.5-volt  dc  supply  to  pins  A  and  C
of PWR jack J5 (C is- ground). POWER
This section describes the principles of op-
switch CB1 is a circuit-breaker switch that
eration of the test unit, and includes a stage
automatically
shuts
o f f w h e n  overloaded
analysis of the various circuits to assist the re-
with 15 amperes or more.
When POWER
pairmen
while
troubleshooting
the
switch CB1 is set to RESET ON, the +27.5-
equipment.
volt dc primary power is distributed to the
1-22. Primary Power Distribution
following places:
a. Indicator lamps DS1, DS2, and DS4.
The test unit uses and distributes +27.5-
b. Power input terminal E3 of audio ampli-
volt dc power. This power is applied from the
fier 3A1.
14

Privacy Statement - Press Release - Copyright Information. - Contact Us

Integrated Publishing, Inc.