Agilent Technologies 7890 Series - GC Does Not Recover after Firmware Update

GC Power On and Communication Symptoms 6
Agilent 7890 Series Troubleshooting 125
GC Does Not Recover After Firmware Update
If the GC starts but does not display the “Power on successful”
message, look for any error messages. Record any messages.
Then resolve the problem as follows:
1 Try power cycling the GC.
2 If the GC still does not recover, turn off the GC.
3 While pressing the [Stop] and [0] keys, turn on the GC.
Continue to hold the keys until the GC reboots. You should
see a display similar to the following:
MMON Version X.XX
IP = 10. 1. 1.101
If this display appears, you can now communicate to the GC.
Reload the firmware.
4 If the GC does not boot up and show a display similar to the
one above, or if the update fails again, contact Agilent for
service.