Essilor AKR 550 Maintenance Manual

58
Start-up of program mode
When auto-ref is turned on, the power indicator lights up and lights off soon. Right after that,
press the buttons from 1 to 5 of figure. 2 in order quickly.
If the screen of Figure. 3 does not appear, turn the power off and start over from “Start-up of
program mode”.
The version displayed on this screen is the one of “program rewriting software” installed in
auto-ref and not the one of the program which is re-writing on this procedure manual.

Essilor AKR 550 Specifications

General

Brand	Essilor
Model	AKR 550
Category	Medical Equipment
Language	English