Siemens Gigaset 3000 - Manual (Page 69)

69
Display Test
Using the display test, it is possible to check whether all dis-
play items (pixel) are displayed correctly.
If any display items are not dimmed these are faulty. Consult
your system administrator or technician.
+ Press the display key.
<
Scroll to 7?<:E@?@ .
= Confirm the selection.
All display items are briefly dimmed.
7?<:E@?@