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Page Title:
Modular power supply PS2 voltage adjustment. |
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 ARMY TM 5-6675-309-14
MARINE CORPS TM 08840A-14/1
Press POWER SUPPLY TEST SET ON
(b)
(i) Press POWER SUPPLY TEST SET ON
switch-indicator to on (switch-indicator
switch-indicator to off (switch-indicator
lights).
goes off).
(c)
Connect digital voltmeter (DVM) test leads
(j) Set INPUT POWER PSTS circuit breaker
to SELF TEST +28V and SELF TEST PWR
to OFF.
RTN test jacks.
(3) 1-minute timer adjustment. Perform 1-minute
(d)
Ensure that DVM indicates +28V. If not,
timer adjustment as follows:
adjust +28V power source for +28V.
Set INPUT POWER PSTS circuit breaker
(a)
(e)
Connect DVM positive test lead to power
to ON.
supply PSI terminal 4 and negative test lead
(b)
Press POWER SUPPLY TEST SET ON
to power supply PS1 terminal 3.
switch-indicator to on (switch-indicator
lights).
NOTE
(c)
Connect DVM test leads to SELF TEST +28V
Prior to making voltage adjustments, take
and SELF TEST PWR RTN test jacks.
cover off the adjustment screw.
Ensure that DVM indicates +28V. If not,
(d)
Adjust modular power supply PS1 voltage
(f)
adjust +28V power source for +28V.
adjustment for -28 ( 1)V.
(e)
Set MODE switch to NO LOAD.
Place cover back on adjustment screw and
(g)
disconnect DVM test leads.
(f)
Set FUNCTION switch to PS+17V.
(h)
Press POWER SUPPLY TEST SET ON
Set REFERENCE AMB TEMP switch to
(g)
switch-indicator to off (switch-indicator
+8 VDC.
goes off).
Set SELF TEST switch to SWITCHES.
(h)
(i)
Set INPUT POWER PSTS circuit breaker
(i)
If necessary, reset the OVERLOAD FAIL
to OFF.
switch-indicator.
(2) Modular power supply PS2 voltage adjustment.
Connect DVM test leads to SELF TEST TIMER
(j)
Perform voltage adjustment of modular power
1 MIN and SELF TEST PWR RTN test jacks.
supply PS2 as follows:
(k)
While observing DVM, set SELF TEST switch
Set INPUT POWER PSTS circuit breaker
(a)
to TIMERS. DVM indicates 0.0 to +1.0V for
to ON.
50 to 70 seconds, then goes to greater than
(b)
Press POWER SUPPLY TEST SET ON
+20V. If necessary, adjust resistor A1R44 for
switch-indicator to on (switch-indicator
desired time interval. OVERTEMP indicator
lights).
will also light.
(c)
Connect DVM test leads to SELF TEST +28V
(l)
Disconnect DVM test leads.
and SELF TEST PWR RTN test jacks.
Press POWER SUPPLY TEST SET ON
(m)
(d)
Ensure that DVM indicates +28V. If not,
switch-indicator to off (switch-indicator
adjust +28V power source for +28V.
goes off).
(e)
Connect DVM test leads to SELF TEST
(n)
Set INPUT POWER PSTS circuit breaker
+10V and SELF TEST PWR RTN test
to OFF.
jacks.
(4) 2-second timer adjustment. Perform 2-second
NOTE
timer adjustment as follows:
Prior to making voltage adjustments, take
Set INPUT POWER PSTS circuit breaker
(a)
cover off the adjustment screw.
to ON.
(f)
Adjust modular power supply PS2 voltage
(b)
Press POWER SUPPLY TEST SET ON
adjustment for +10 ( + 0.1, -0.2)V.
switch-indicator to on (switch-indicator
lights).
Place cover back on adjustment screw and
(g)
disconnect DVM test leads.
(c)
Connect DVM test leads to SELF TEST +28V
and SELF TEST PWR RTN test jacks.
(h)
Connect DVM test leads to SELF TEST -10V
and SELF TEST PWR RTN test jacks. Observe
(d)
Ensure that DVM indicates +28V, If not,
that DVM indicates -9.8 to - 10.1 V.
adjust +28V power source for +28V.
Change 1
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