Keysight 654xA, 655xA, 664xA, 665xA Error E3: Front panel EEPROM checksum test failed (power-on, and for models 664xA & 665xA, also *TST?).

GPIB DC Power Supply · taken from the manufacturer’s manual, pages cited

Error codeE3

Front panel EEPROM checksum test failed (power-on, and for models 664xA & 665xA, also *TST?) possibly from power loss during write operation or a defective EEPROM A3U6. The manual lists no action for this code.

Model
Keysight 654xA, 655xA, 664xA, 665xA
Display shows
E3
Type
Error code
Source
Manual p. 37

What E3 means

Front panel EEPROM checksum test failed (power-on, and for models 664xA & 665xA, also *TST?). p. 37

Common causes

  • Possibly due to power loss during a write operation. See Checksum Error Recovery in the Operating Manual. If power loss is not the problem, EEPROM A3U6 could be defective (after replacing U6, supply must be initialized and calibrated). p. 37

If E3 is still not resolved

The manual gives no further instruction for this code. Open the code table in the PDF or contact Keysight service.

Open the manual at page 37 All 654xA, 655xA, 664xA, 665xA error codes Manual details & download

This page summarises what the manufacturer’s manual says about E3; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with Keysight. Found a mistake? Report an error.