3500/42 Operation and Maintenance
Maintenance
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7. Increase the power supply voltage (more negative) until the OK LED just
goes off (upper limit). Verify that the Channel OK State line in the Channel
Status box reads not OK and that the OK Relay indicates not OK. Verify that
the Upper OK limit voltage displayed on the Verification screen is equal to or
more positive than the input voltage.
8. Decrease the power supply voltage (less negative) to -7.00 Vdc.
9. Press the RESET switch on the Rack Interface Module (RIM). Verify that the
OK LED comes back on and the OK relay energizes. Verify that the Channel
OK State line in the Channel Status box reads OK.
10. Gradually decrease the power supply voltage (less negative) until the OK
LED just goes off (lower limit). Verify that the Channel OK State line in the
Channel Status box reads not OK and that the OK Relay indicates not OK.
Verify that the Lower OK limit voltage displayed on the Verification screen is
equal to or more negative than the input voltage.
11. Increase the power supply voltage (more negative) to -7.00 Vdc.
12. Press the RESET switch on the Rack Interface Module (RIM). Verify that the
OK LED comes back on, the OK relay energizes and that the Channel OK
State line in the Channel Status box reads OK.
13. If you can not verify any configured OK limit, go to Section 5.1.11 (If a
Channel Fails a Verification Test).
14. Disconnect the test equipment and reconnect the PWR, COM, and SIG field
wiring to the channel terminals on the Monitor I/O Module. Press the RESET
switch on the Rack Interface Module (RIM) and verify that the OK LED comes
on and the OK relay energizes.
15. Repeat steps 1 through 14 for all configured channels.
16. Return the bypass switch for all configured channels back to their original
setting.
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