Model 2000S1G2z8
58
Rev A
4.3.4
Interlock Fault (Schematic 10051819,10051526)
The Model 2000S1G2z8 is equipped with an interlock connector, which is located on the rear panel. The
interlock circuit can be used to sense the openings of doors to screen rooms, test chambers, and so forth, and to
turn off RF energy when these doors are opened.
NOTE: The Model 2000S1G2z8 is shipped with a mating connector, which has a jumper between Pins 1 and 8
and 10 and 14, installed in the rear panel interlock connector. The unit will not operate unless the
interlock circuit is closed.
4.3.4.1
Interlock Fault
1.
In the event of an Interlock Fault, the front panel display should read INTERLOCK FAULT.
2.
Check to see if it is safe to be power up the unit—are there personnel present in the screen room, or are
doors to the screen room open?
3.
After checking for safety, try to clear the Interlock Fault from the front panel by using the RESET switch.
4.
If the Interlock Fault will not clear, check for continuity in the External Interlock Circuit (Pin 1 to Pin 8 in
the connector, which mate with P1 in the rear panel).
5.
Check the voltage on A64A2 J5, pin 32; it should be < 0.1V.
6.
If the voltage on A64A2 J5, pin 32 is high, check the interlock line to ground.
4.3.4.2
AC Interlock Fault
1.
In the event of an AC Interlock Fault, the front panel display should read AC INTERLOCK FAULT.
2.
Check to see if it is safe to be power up the unit—are there personnel present in the screen room, or are
doors to the screen room open?
3.
After checking for safety, try to clear the Interlock Fault from the front panel by using the RESET switch.
4.
If the AC Interlock Fault will not clear, check for continuity in the External Interlock Circuit (Pin 10 to Pin
14 in the connector, which mate with P1 in the rear panel).
5.
Check the voltage on A64A2 J5, pin 31; it should be < 0.1V.
6.
If the voltage on A64A2 J5, pin 31 is high, check the interlock line to ground.
4.3.5
Power Supply Faults (Schematic 10051819,10051526)
4.3.5.1
PS3-PS9 DC Fault (POWER FAIL)
1.
PS3-PS6 power supplies have DC
POWER FAIL output which is normally low (≤0.1V) to the A
64A2 J5,
pins 24-30. If any of these outputs fail, their output will go high (> 4.0V) and inhibit the A1 Pre-Amplifier
Module.
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