Quantcast Section II. LEECE-NEVILLE MODEL R0015027RA

 

Click here to make tpub.com your Home Page

Page Title: Section II. LEECE-NEVILLE MODEL R0015027RA
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
Figure 3-1. NPN transistor (Lice-Neville).
Up
TB-9-2920-225-34-1 100 AMP Regulator (Solid State) Manual
Next
Figure 3-4. Circuit board-model R0015027RA.
TB 9-2920-225-34-1
Section II. LEECE-NEVILLE MODEL R0015027RA
c. Voltage Adjustment Rheostat (R15).
3-4. General. Figure 3­3 is a plan view of the
(1) Remove voltage adjustment access screw
regulator with the cover removed, showing the
from the cover of regulator.
remaining test points. There are 10 total test
(2) Place ohmmeter probes to terminals of
points. Figure 3­5 is an electrical schematic
the rheostat (see figs. 3-4 and 3-5).
diagram of the regulator circuit.
(3) Rotate rheostat fully clockwise; read-
ing should be approximately 45 ohms.
3-5. Checkout and Repair.
(4) Rotate rheostat fully counterclockwise;
a. Diode D2 and Relay (see fig. 3­3 and 3­5)
reading should be less than 5 ohms.
(voltage off).
(5) If other readings are obtained, replace
(1) Place positive probe of ohmmeter to pin
the rheostat, NSN 5905-00­581-1405.
F of connector J2 and negative probe on TP1.
d. Power Resistor R2. Place ohmmeter probes
Meter should read 0 ohms.
across power resistor R2 (see figs. 3-4 and 3­5).
(2) Place positive probe on TP1 and nega-
Meter should read approximately 30 ohms.
tive probe on TP2. Meter should read low ohms
e. Detailed Circuit Checks.
(hundreds).
(1) Table 3­1 contains "power off" resist-
( 3 ) Reverse probes in (2) above. Meter
ance checks of the circuit (see figs. 3-3 and 3­4
should read high ohms (thousands).
for test points ).
(4) If other readings are obtained in (2)
(2) Table 3-2 contains "power on" voltage
or (3) above, replace diode D1.
checks of the circuit (see figs. 3­3 and 3-4 for
(5) Place positive probe on TP2 and nega-
test points).
tive probe on Pin C of connector J2. Meter should
f. Functional Check. Check the performance
read approximately 55 ohms.
of the regulator on the test stand and make final
(6) If another reading is obtained, remove
voltage adjustments. Voltage output should read
and replace both the relay and diode D2.
28 volts. If the regulator does not function prop-
b. Resistor R1. Replace ohmmeter probe across
erly, perform the following:
resistor R1 (see figs. 3-3 and 3-5). Meter should
(1) Check wires and connections.
read approximately 0.4 ohms.
Top-view (Leece-Neville)­model R0015027RA.
Figure 3­3.
3-3

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

Integrated Publishing, Inc.