TM 55-4920-429-13
(3) Turn the screwdriver adjustment on power supply PS5 for +5.00 volts on the digital mul-
timeter. The DMM shall indicate +4.92 to +5.08.
c. Adjust power supply PS3 (+15 volt dc).
(1) Set the SELF TEST switch to +15 VDC (DMM).
(2) Set the digital multimeter to the 20 volt dc range. Connect the test leads of the multimeter to
the HI and LO jacks of the test set.
(3) Turn the screwdriver adjustment on power supply PS3 for +15.00 volts on the digital mul-
timeter. The DMM shall indicate +14.81 to +15.19.
d. Adjust power supply PS4 (-15-volt dc).
(1) Set the SELF TEST switch to -15 VDC (DMM).
(2) Set the digital multimeter to the 20-volt dc range. Connect the test leads of the multimeter to
the HI and LO jacks of the test set.
(3) Turn the screwdriver adjustment on power supply PS4 for -15.00 volts on the digital mul-
timeter. The DMM shall indicate -14.81 to -15.19.
e. Adjust power supply PS2 (-15 volt dc).
(1) Set the SELF TEST switch to -15 VDC.
(2) Set the digital multimeter to 20-volt dc range. Connect the test leads of the multimeter to the
HI and LO jacks of the test set.
(3) Turn the screwdriver adjustment on power supply PS2 for -15 volts on the digital multimeter.
The DMM shall indicate -14.81 to -15,19.
f. Adjust power supply PS1 (+15-volt dc).
(1) Set the SELF TEST switch to +15 VDC.
(2) Set the digital multimeter to the 20-volt dc range. Connect the test leads of the multimeter to
the HI and LO jacks of the test set.
(3) Turn the screwdriver adjustment on power supply PS1 for +15 on the digital multimeter. The
DMM shall indicate+ 14.81 to +15.19.
g. Shutdown.
(1) Set both MASTER POWER switches to OFF.
(2) Set external power to OFF. Disconnect the power connections.
(3) Install the panel in its case (para 4-25).
4-24. Analog Meter Zero Adjustment.
(See fig. 4-1.) Zero adjust the analog meter as follows:
a.
b.
c.
d.
e.
4-8
Remove the panel from the case (para 4-15 ).
Remove two screws and nuts and remove the cover from the meter.
With the panel horizontal, turn the zero adjust screw until the meter pointer is centered on 0.
Position the cover on the meter and install two screws and nuts.
Install the panel in its case (para 4-25).
