LED blinks 11 times
Trouble Mode
Fan SOS
Defective Board (Possibility)
Fans, PB, A Board
29
Warning: Disconnect AC Power prior to making any
disconnection or connection
Figure 13
11 blinks condition happens:
1. If one of the fans opens or
increases resistance.
2. If the PB board becomes
defective triggering
shutdown.
3. If the CPU in the A board
gives a wrong diagnostic
triggering shutdown
Fan SOS Circuit