Table 8-9. Alarm Monitor Fault/Safety Gate, Troubleshooting Chart
Item of Check
DANGEROUS VOLTAGES EXIST IN THIS EQUIPMENT. Do not attempt any removal or replacement
unless the equipment is in a non-operating condition and all power circuit breakers on the power
distribution panel are in the OFF position.
c, and d.
b. Connect the power supply line cords to a 115
volt, 50-60 Hz power source. Turn on the
supply for a 5-volt indication on its front
d. Adjust the remaining power supplies for their
respective voltage source output levels.
e. Turn off the power supplies. Connect power
supplies to external power plugs on
the right side panel of the test fixture.
Turn on the power supplies.
RETURNS test points on the text fixture.
Adjust the + 24 V source power supply for
24 volts on the multimeter.
- 15 V, and + 5 V test points and adjust
the associated power supply for the
respective voltage indication.
h. Proceed to step 2.
a. Insert fault/safety gate module A1 into J1 of
the test fixture.
If any lamp indica-
switches S2 through S28 to the positions
Lamps DS1 through
tion does not agree
designated by test No. 1. Observe 1.
DS9 should be on
with the test No. 1 in-
or off as indicated
dications, refer to
DS1 thru DS9 on the test fixture.
by test No. 1
tests No. 2 through 24.
d. Remove power and disconnect UUT from test
c. On the test fixture check for or perform the
(1) Switch S32 AC PWR is in the OFF
position. Circuit breaker CB1 is in the up (open) position.
(2) Switches S1 through S31 are in the OFF
d. On the test power supplies check that the
power switches are off and the voltage output controls
are in the minimum output positions.