Multiple PSM alarms are observed on the Device.

Router generated below alarm:

root@RE0> show system alarms no-forwarding

3 alarms currently active

Alarm time               Class  Description

2025-03-14 11:15:08 PDT  Major  PSM 0 Unit Offline

2025-03-14 11:15:08 PDT  Major  PSM 0 Input Under Voltage Failure

2025-03-14 11:15:08 PDT  Major  chassis No Redundant Power

System Active Errors Detail Information

PSM 0

----------------------------------------------------------------

Error Name            : psm_in_under_volt_fail

Identifier            : /psm/0/hwdre/0/cm/0/psm_mcu/psm0/psm_in_under_volt_fail

Description           : Psm_input_undervoltage_failure

State                 : enabled

Scope                 : board

Category              : functional

Level                 : major

Threshold             : 

Error limit           : 1

Occur count           : 1

Clear count           : 0

PSM 0

----------------------------------------------------------------

Error Name            : psm_other_failure

Identifier            : /psm/0/hwdre/0/cm/0/psm_mcu/psm0/psm_other_failure

Description           : Psm_other_failure

State                 : enabled

Scope                 : board

Category              : functional

Level                 : minor

Threshold             : 10

Error limit           : 1

Occur count           : 1

Clear count           : 0

Total Input Power                    801

  PSM 0

    State: Offline

    Input 1               0            0

    Output              0.0          0.0

• The message "chassis No Redundant Power" indicates that the power remaining in the system is less than the individual connected Power Supply Modules (PSMs). This can occur when the system's power capacity is insufficient to support the existing load, leading to the disabling of power redundancy.

• Since PSM is offline,  PSM itself may be faulty, not providing the proper voltage to the system.

Perform the below troubleshooting action during a maintenance window:

• Do a physical inspection:  Check for the power connectivity and check LED status.
• Reseat/Replace the power cable.
• Restart the affected device or remove/re-insert a power supply during a maintenance window, then monitor for the alarm. 
• If the issue persist need to replace the faulty power supply with new one.