Heathkit-hk-232-packkit-command UPDATE – Manual (PDF)
Heathkit HK-232 Packkit Command UPDATE manual: assists technicians in troubleshooting and calibrating the device. File size: 1.4 MB.
UPDATE
Hp-8590a-service-manual UPDATE – Service manual (PDF)
HP 8590A Service Manual PDF: Troubleshoot and calibrate the HP 8590A model efficiently. File size: 9.3 MB.