Digital Equipment DECmpp 12000/Sx 100, Руководство по обслуживанию оборудования

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2.3 Indicators
2.3.2.3 PE Array and Router PCB Indicators
Each PE array PCB has eight indicators arranged into two 4-LED groups. The
upper group provides status information about the PCB, and the lower bank
displays the results of the global OR (GOR) for that PCB. Router PCBs have
only the status indicators. Figure 2–5 shows the location of the PE and router
indicators in the DPU. Figure 2–8 shows the indicator pattern. Table 2–4 lists
the PE array and Router indicator functions (from the top).
Figure 2–8 PE and Router PCB Indicators
MKV−040000314−57−RAGS
GOR Bit 0
GOR Bit 1
GOR Bit 2
GOR Bit 3
Power
Parity Error
Selected for Diagnostics
GOR Enable Power
Parity Error
Selected for Diagnostics
GOR Enable
PE Array Router
Table 2–4 PE Array and Router Indicators
Indicator Function
Power ON to indicate that the PCB is powered
Parity Error ON when a parity error occurs, and OFF when the error-handling
routine is completed or cleared by a reset
Selected for
Diagnostics ON when the PCB is selected by a diagnostic routine
GOR Enable ON when the PCB GOR utility is selected
GOR Bit 0 ON when GOR bit 0 is active
GOR Bit 1 ON when GOR bit 1 is active
GOR Bit 2 ON when GOR bit 2 is active
GOR Bit 3 ON when GOR bit 3 is active
2–12 DPU Controls and Indicators