Why does the 5500 sc or 961X sc have a warning of "lower door open" when the door is closed?

Document ID

Document ID TE2330

Version

Version 2.0

Status

Status Published

Published Date

Published Date 27/05/2017
Question
Why does the 5500 sc or 961X sc have a warning of "lower door open" when the door is closed?
Summary
5500 sc, 5500 sc AMC, and 961X sc "lower door open" warning when door is closed
Answer
If the lower door is closed, but the instrument warns the lower door is open, the Open Door Detector may have failed.  In this case, replace Catalog Number/ Order Code 6778600 - si CIRCUIT BOARD ASSEMBLY, OPEN DOOR DETECTOR.