Table 21. Errors diagnosed by the diagnostic panel LEDs (continued)
Diagnostics panel LED
Part/action
TEMPERATURE LED on
1. Ambient temperature must be within normal operating specifications. Refer
to “Specifications” in Chapter 1 of the hardware installation guide.
2. Ensure filler panels are installed in all empty bays.
3. Ensure fans are operating correctly by checking the fan LEDs.
4. Examine System Error Log.
a. System over recommended temperature
v
Information LED panel
b. DASD over recommended temperature (DASD LED also on)
1) Overheating hard drive
2) DASD backplane
c. System over recommended temperature for CPU
x
(where
x
is 1 or 2)
(CPU LED is also on)
1) CPU
x
2) System board
5. If the CPU LED on the diagnostics panel is also lit, one of the
microprocessors has caused the error.
FAN LED on
1. Check individual fan LEDs.
2. Replace respective fan.
3. Fan cable.
4. System board.
5. Power cage assembly.
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