(6) Fan alarm
Error Code
Possible cause of
the malfunction
Countermeasures
Note
Troubleshooting
1107 : Basic shelf fan alarm
1108 : Expansion shelf 1 fan alarm
1109 : Expansion shelf 2 fan alarm
1.
The fan of Basic shelf, Expansion shelf 1 or Expansion shelf 2 is out
of order.
Is the fan operating?
Yes
Is Back Board CN25 3pin "0V"?
Yes
Is Q4 collector "5V"?
Yes
Is Q5 collector "0V"?
Yes
Check the CPU board. (Confirm
that 2, 4, 6 PIN of IC 40 is "0V.")
None
5.2 Troubleshooting Guide
No
Replace the fan.
No
Replace the fan or "Q4."
No
Replace the "Q4."
No
Replace the "Q5."
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