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Diagnosing array problems 31
Idle task LED
status
Gas pedal LED
status
Controller CPU activity level
Blinking Off 0–25%
Off Blinking 25–50%
Off On steadily 50–75%
On steadily On steadily 75–100%
Battery pack LEDs
Only the cache upgrade module has a battery pack. The LEDs for the battery pack are viewable on the
cache board.
Item 1
(amber LED)
Item 2 (green
LED)
Interpretation
— Steady glow
The cache batteries are being charged. (The
charging process takes less than three hours.)
— Fast blink
The cache microcontroller is waiting for the host
controller to communicate.
Steady glow — One of the following situations is occurring:
• There is a short circuit across the battery
terminals or within the battery pack.
• The host controller is updating the cache
microcontroller firmware.
Fast blink —
There is an open circuit across the battery
terminals or within the battery pack.