Troubleshooting 7 Blinks (SOS 7)
A 7 blinks shutdown can be caused by a failure of any or a combination of the following boards:
SU/SD, SC, A, or the Panel. Is also possible for the SS board to cause 7 blinks shutdown on this model.
Note: This page indicates the order in which these boards are likely to fail. This information alone is not
enough to diagnose which board is defective. To determine the cause of a 7 blinks failure, follow the
troubleshooting procedure on the following pages.
Most Likely.
“SU or SD”
2
nd
most
common.
“SC”
Possibly,
but not
common
“A”
1 2 3
Order of Failure
SS
Slide 18
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