Products > Test Equipment
HP 8664A faults
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plazma:
I got a HP 8664A for free. It gives error messages "Hardware failure 5", "Calibration error 1" and "Calibration error 2. Does anyone have experience in debugging and fixing these?
Tony_G:
Hardware Failure 5 is in the ALC. The result code of 8,043,311 is a calibration error code (hence the Cal Error messages) - The manual suggests running the ILD (Instrument Level Diagnostic) test function to get a full error result.


* INSTR PRESET
* SPECIAL
* 3,2,0
* SPEACIAL
* If the display says "320 Test" then press ENTER (ON)
* Otherwise rotate the RPG Knob until "320 Test" is displayed and then press ENTER(ON)
This is in section 2 of the service manual on the Keysight web.

plazma:
Thanks, I'll try this.
plazma:
I had to open the top lid and enable "Service Special Function" DIP switch. After that the "320 Test Instrument" worked. The result code was -10,124,311.

I have to disconnect the HF DRVR - J6 connector and connect the cable to the power meter for further debugging (Test 2A).
To be continued tomorrow.....
markus:
Did you manage to repair your 8664A?
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