You can try googling: "Hitachi Telephone System Manuals" I found a few sites that sell the manuals for the various systems.

Service work always goes faster and makes you look better, when it's on a system you know


Dean
Photographs:
https://www.instagram.com/deanwilsoncanby/
https://fstoppers.com/profile/deanwilsoncanby
https://www.facebook.com/Dean-Wilson-Photography-112841337020414

Please don't confuse your "Internet Search" with my licenses, certifications and over 30 years experience.

"Thank you for calling Technical Support. If you feel you have reached this number in error, please hang up and press redial."