Jenway 7305 - Manual (Page 19)

The lamp and fan will be turned back on and the lamp
will begin to warm up.
The lamp cold icon is displayed adjacent to the calibrate
to zero icon in the measurement mode. The time needed
for the lamp to warm up is five minutes.
Once the warm up time of five minutes is complete the
lamp cold icon disappears.
0.000
100.0
400
09:02
ABS
%T
nm
0.000
100.0
400
09:02
ABS
%T
nm
19