Specifications

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3BUS 208 000 R1301190 Maintenance Procedures
Power and Temperature Checks
Prepare weekly reports on the system power and board temperatures. Use the
Voltage and Temperature History tab of each sensor’s Health Report to print the last
20 occasions of DC power levels and cabinet temperatures (see Figure 9-7). Keep
the weekly reports in a log for future reference.
Figure 9-7 NT Workstation Sensor Health Report - Voltage/Temperature
History
DC Voltage Level Checks
Check the five DC voltage levels. Perform this check at least once a month using
the Electronics portion of the Health Report. They report the number of times each
day that the DC voltages exceeded their tolerance limits. The limits are checked
on the hour, each hour of the day. The limits for each voltage are as follows:
± 12 volt supply ± 0.6 VDC
+ 5 volt supply ± 0.3 VDC
± 15 volt supply ± 0.3 VDC
Cabinet Environmental Checks
Check the cabinet environmental temperature at each microcontroller board.
Perform this check at least once a week using the Electronics portion of the Health
Report. The report represents the maximum temperature of each shift for each day.
The limits are checked on the hour, each hour of the day.
Examine the report for excessive cyclical variations or heating trends. It may be
possible to correlate performance problems with heat problems.