This article explains the possible hardware issue with SRX4100/4200.

The customer reported access issues with the device, the following logs were seen in the console while attempting to login from the serial console.
 

Intel(R) Boot Agent GE v1.4.04
Copyright (C) 1997-2012, Intel Corporation
Trying 127.0.0.1...
CLIENT MAC ADDR: 00 90 0B 50 1D 5D GUID: 00020003 0004 0005 0006 000700080009
PXE-E51: No DHCP or proxyDHCP offers were received.

ttyUSB0
PXE-M0F: Exiting Intel Boot Agent.

Reboot and Select proper Boot device
or Insert Boot Media in selected Boot device and press a key

This issue typically arises due to a potential hardware malfunction within the Hard Disk. However, it's essential not to definitively label it as a hardware issue and initiate the RMA process until after attempting a USB reimage.
 

To address this, utilize KB30944 [juniper.net] for re-imaging the SSD to facilitate recovery. If the problem persists even after USB recovery attempts, then it indicates a probable hardware failure necessitating replacement.
 

https://supportportal.juniper.net/s/article/SRX1500-How-to-install-SRX1500-from-USB-using-an-install-media-image

2024-03-12 : Article Created