TM 9-4910-663-34
(1)
Check to see that circuit breaker switch (CB1) is set to the OFF position.
(2)
Set REGULATOR CHECK FIXED RESISTA1NCE METHOD switch (S13) to the ON position.
(3)
Using an ohmmeter, verify that the resistance between the REGULATOR B-binding post and the
REGULATOR CHECK FIXED RESISTANCE METHOD 7 OHM binding post is 7 ±0.7 ohms.
(4)
Using an ohmmeter, verify that the resistance between the REGULATOR B-binding post and the
REGULATOR CHECK FIXED RESISTANCE METHOD 2-1/4 OHM binding post is 2.25 ±0.23 ohms.
(5)
Using an ohmmeter, verify that the resistance between the REGULATOR B-binding post and the
REGULATOR CHECK FIXED RESISTANCE METHOD 1-1/2 OHM binding post is 1.5 ±0.15 ohms.
(6)
Using an ohmmeter, verify that the resistance between the REGULATOR B+ binding post and the
REGULATOR CHECK FIXED RESISTANCE METHOD 1/4 OHM binding post is 0.25 ±0.03 ohm.
(7)
Set REGULATOR CHECK FIXED RESISTANCE METHOD switch (S13) to the OFF position.
c.
DC Variable Power Supply Circuit (fig 2-5).
(1)
Set all test stand controls to the preliminary settings listed in table 2-2.
(2)
Set circuit breaker switch (CB1) to the ON position.
(3)
Set D.C. VARIABLE VOLTS switch (S10) to the ON position.
(4)
Using a DC voltmeter, verify that the DC voltage at the DC VARIABLE OUTPUT binding posts can be
adjusted over a range of 0 to 32 volts using DC VARIABLE POWER SUPPLY 0-32 VDC control (T5, fig 2-7).
(5)
Set D.C. VARIABLE VOLTS Switch (S10) to the OFF position.
d.
Relay Contact Closure and DC Control Power Circuits (fig 2-5).
(1)
Set all test stand controls to the preliminary settings listed in table 2-2.
(2)
Connect a jumper between the RELAY CONTACTS INPUT binding posts.
(3)
Set circuit breaker switch (CB1) to the ON position and check to see that CONTACT CLOSURE indicator
(DS7) lights.
(4)
Remove the jumper. CONTACT CLOSURE indicator (DS7) should go off.
Change 1 5-2
