LPU5 installed in every LIM 1

[melhabba]

I worked with MX ONE MD110 I strange to installed LPU5 every LIM I do not know why? some of them have alarm ( red LED is lit )

last system ( MD110 BC9 ) have only 1 LPU BOARD installed in LIM 1

please can any one answer me.
thank you

 

[himdp]

Every LIM is supposed to have an LPU. Do you mean there are two LPUs per LIM?
If this is the case, you have a duplicated control system which has a working and a standby LPU. The current standby will be indicated by a red light. Enter command DCSSP; to confirm this.

 

[melhabba]

THNK YOU himdp