HP 220mx User Manual page 73

Test Name
BOTTOM THUMB
Used by service personnel only. Reports THUMB A,
THUMB B, or NO THUMB. Looks at the top and bottom
thumb sensors and reports whether the thumbs on the
disk transport mechanism are in the forward or back
position. If THUMB A or THUMB B is returned, the
specified thumb is the forward position. If NO THUMB
is returned, both thumbs are in the back position.
TOP THUMB Used by service personnel only.Reports ON or OFF.
Looks at the top thumb sensor which reports whether or
not the thumb that is currently on the top side of the
disk transport mechanism is in the forward position. If
ON is reported the thumb is in the back position; if OFF
is reported the thumb is in the forward position.
TRANSLATE Reports ON or OFF after looking at the translate
SENSOR calibration sensor. (Display automatically updates if the
status changes.)
Chapter 3
Operating the Jukebox
Running an Internal Test
Description
3-33