E5070B-10B ENA Series Network

Situation:
 When using the A1 source board (E5071-66571/69571) in repairs, Rev A.05.00 or later firmware is required. If
customer unit’s firmware version is less than Rev.A.05.00, it should be updated by changing the operating
system. With Rev A.03.60 or below version firmware, an error message “Power on test failed (A1 not found)” is
shown at lower left part on a display at power on. With Rev A.03.62 or A.04.00 version firmware, any of
messages  “Power on test failed (A1 DC-bus, 0x00000010)”, “Power on test failed (A1 DC-bus, 0x00000020)”,
or “Power on test failed (A1 DC-bus, 0x00000030)” is shown at power on.
 
To avoid troubling on customers, especially after a system recovery timing, it’s necessary to update the E5070B
operating system if customer unit’s firmware is Rev.A.4.00 or below.