This article will show an scenario to determine if there is a hardware failure on SRX550 PEM.

root> show chassis alarms no-forwarding

1 alarms currently active

Alarm time        Class Description

2024-07-02 10:35:20 UTC Major PEM 0 Output Failure

root> show chassis environment no-forwarding

Class Item              Status   Measurement

Temp Routing Engine         OK     27 degrees C / 80 degrees F

   Routing Engine CPU       OK     27 degrees C / 80 degrees F

   Routing Engine         Absent

   Routing Engine CPU       Absent

Fans SRXSME Chassis Fan 0      OK     Spinning at normal speed

   SRXSME Chassis Fan 1      OK     Spinning at normal speed

   SRXSME Chassis Fan 2      OK     Spinning at normal speed

   SRXSME Chassis Fan 3      OK     Spinning at normal speed

Power Power Supply 0         Present

   Power Supply 1         OK

1. Physically reseat PEM.
2. If issue persists and status is not OK, proceed with RMA.