Labomed PRIMA GN User Manual page 26

19. TROUBLESHOOTING TABLE
Problem
No illumination
Insufficient illumination
Inoperative surgical field
illumination
Insufficient illumination
(continued)
Up and down motion of the
suspension system is stiff
6165000-795
Possible Cause
Power cable not plugged in
Power switch in OFF position
Defective instrument fuse
Defective power cable
Line power failure
Failure of suspension system
electronics
Light guide not properly inserted
in arm of microscope
Brightness level set too low
Light guide not properly inserted
in arm of microscope
Defective light guide (illumination
not uniform)
Inoperative surgical field
illumination
Failure of electronics
Switch off via limit-switch on
suspension arm system
The thermal cut-off in the lamp
housing is contaminated
Defective fan; failure of system
electronics
The friction adjustment screw on
the suspension system is
tightened too firmly
Prima GN
Remedy
Plug in power cable
Press the power switch to ON
position
Change the fuse
Change the power cable
Contact in-house technician
Contact the service department
Insert the light guide properly to
get maximum illumination
Adjust brightness control
knob
Insert the light guide properly to
get maximum illumination
Change the light guide
Insert the light guide as far as it
will go
Illuminate the surgical field using
an alternate illuminator,and
contact the service department
Move the suspension system
into the working position
Clean the thermal cut-off with a
dry brush or blow it clean, with
compressed air
Contact the service department
Loosen the friction adjustment
screw on the suspension system
as needed
Issue 1.9
Printed on May,2023
PRIMA GN
23