EN 20_070_0009I v1.5
Maintenance
47
Measurement problems
Error/problem
Possible causes
Troubleshooting
Centering phase
The customer's eye is
off center in an upward
direction and cannot be
centered using the
touch screen (error
message appears).
The chin support is
set too high.
Correct the chin rest height.
The customer's eye is
off center in a
downward direction
and cannot be centered
using the touch screen
(error message
appears).
The chin support is
set too low.
Correct the chin rest height.
The customer's eye is
off center in a right or
left direction and
cannot be centered
using the touch screen
(error message
appears).
The customer’s
head is offset to
one side.
The customer’s
head is tilted.
Correct the position of the
head on the chin rest.
Correct the angle of the
head relative to the head
support (e.g. turn head or
normal measurement
mode).
The customer's eye
was not detected.
The illumination
level in the
measuring head
area is too high.
Ensure no external light
sources are influencing eye
detection.
If the problem continues,
contact your local Service
Support and authorized service
partners.
