Keysight 654xA, 655xA, 664xA, 665xA Error Codes

13 codes from pages 37–50 of the manual

This is the list of error codes the Keysight manual gives for the 654xA, 655xA, 664xA, 665xA GPIB DC Power Supply. Find your code below and open it for what the manual says about its causes and what to do.

Error codes from p. 37

CodeWhat it meansPage
E1 Front panel RAM test failed (power-on). p. 37
E2 Front panel ROM test failed (power-on, and for models 664xA & 665xA, also *TST?). p. 37
E3 Front panel EEPROM checksum test failed (power-on, and for models 664xA & 665xA, also *TST?). p. 37
E4 Primary interface external RAM test failed (power-on). p. 37
E5 Primary interface internal RAM test failed (power-on). p. 37
E6 Primary interface ROM test failed (power-on, and for models 664xA & 665xA, also *TST?). p. 37
E7 GPIB interface test failed (power-on). p. 37
E8 Secondary interface RAM test failed (power-on). p. 37
E9 Secondary interface ROM test failed (power-on, and for models 664xA & 665xA, also *TST?). p. 37
E10 Secondary interface 5 volt read back test failed (power-on, and for models 664xA & 665xA, also *TST?). p. 37
SEC 5 Secondary interface 5 volt read back test failed (power-on, and for models 664xA & 665xA, also *TST?). p. 37
E11 Ambient temperature read back test failed (power-on, and for models 664xA & 665xA, also *TST?). p. 37
E12 CV DAC or CC DAC tests failed (power-on). p. 37

Codes and descriptions are taken from the manufacturer’s manual; page numbers link to the PDF. ManualLib is not affiliated with Keysight. Found a mistake? Report an error.