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Part of a Table Detailing Controls and Indicators of a Typical Controlling Unit
CONTROL AND MAINTENANCE PANELS

Fire Controlman Volume 03-Digital Data Systems
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Figure  3-3.—Example  of  a  power/temperature  panel  (P/TP). Table 3-1 is an example of a table that contains detailed in- formation about the controls and indicators-the name, type, and function and use of the controls and indicators. Other documents that are useful and provide informa- tion are system operating manuals and desktop guides. Let’s take a look at some of the controlling units used to control the computer. We begin with the units that only control the computer’s power and move to the units you can use to remotely operate a computer. POWER/TEMPERATURE PANELS Power/temperature  panels  (P/TPs)  provide  power controls and indicators and temperature indicators. They may also provide a running time meter, a lamp test, a battle short switch, and an alarm to notify you of an overtemperature rendition. Refer to figure 3-3 for an example. Power/temperature panels allow for the powering down and up of the individual modules within the computer’s frame or cabinet. This enables you to remove a designated module for repair. On   any   computer   controlling   unit   that   has provisions  for  controlling  the  computer’s  power,  you must become familiar with the correct procedures for routine  powering  up/down  and  emergency  situations. These procedures can be found in the computer’s technical   or   owner’s   manual,   system   operating manuals, desktop guides, or locally generated system doctrine. In our example, the power/temperature panel is located on the front of the computer’s frame/cabinet for   easy   access   and   monitoring.   This   power/ temperature panel has four levels of controls and indications. They are as follows: Primary power Computer  power Module  power Overtemperature  indications OPERATOR   PANELS Operator  panels  contain  the  controls  and  indicators necessary  to  initiate  computer  operations  including powering the computer up and down. They also enable you to monitor the computer during operations for logic power  status,  overtemperature  conditions,  programmed stops, and faults (power, program, and hardware), and test indicators. You can enable or disable the audible device and put the computer in a battle short condition. See figure 3-4. You can divide the operator panel into the following four areas: Figure 3-4.—Example of an operator panel. 3-7






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