Hello, all. Does anyone know where the lithium coin cell is located on the E4440A PSA SpecAn? I've got the case and the inside cover off and there is a diagram on the top of the inside cover showing the power supply, IF assemblies, etc but nothing showing the processor board or the location of the battery. Thanks for your time and comment. Sincerely
The PSA battery is located on the CPU assembly, which is removed from the rear. After you get the case and the top cover off you'll have to remove the digital IF assembly and the small digital IO board (it is attached to the rear panel and the CPU) Then remove the screws from the rear panel and pull the CPU out by the handle. Once you have it out you'll see the battery right away.
The battery is Agilent part number 1420-0314C. It is a Panasonic 3V P/N BR2325
Best regards,