hello,
this phototherapy unit is quite simple .
check the 3 lamps , the fan and the lamp timer .
When the unit is switched on, by briefly
depressing the on/standby switch, it goes through a
self-test process. The segments of the display are
checked, the software version is displayed and
then a time is shown. During this start up
sequence, the three halogen lamps are lit in turn.
After the start-up procedure described above, the
timer display shows the length of time since it was
last reset and is designed to be used as a treatment
timer. Pressing and holding the on/standby switch
while the lights are on resets this timer. If the
on/standby switch is held in during the start up
procedure, the Bulb Life Timer is displayed.
Releasing and then holding in the on/standby
switch again resets the Bulb Life Timer; the
treatment timer is unaffected.