What’s not working
properly?
What are the symptoms? Here’s what to do:
Remote Control
(error code 90)
Screen is blank or
display is abnormal.
1)
Make sure the remote is
securely plugged into the chair.
2)
Replace the remote.
IMPORTANT: This requires a
software update; send the
appropriate software update kit
with the remote.
3)
If the problem remains, replace
the main PCB. IMPORTANT:
This requires a software update;
send the appropriate software
update kit with the PCB.
Text displays normally
but the selected function
doesn’t work.
Refer to that function elsewhere in
this table.
Summary of Contents for HT-Ascent 4
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