Welch Allyn 118 Series PanOptic Ophthalmoscope - User Manual - Manual (Page 21)

17
Troubleshooting
Trouble Area Possible Cause
Corrective
Action
No Light output
Aperture dial is in-
between positions Rotate the aperture dial.
Lamp burned out. Replace the lamp using
Welch Allyn part number
03800-U or 03800-LED.
Wrong lamp/ incorrect
Welch Allyn lamp/non-
Welch Allyn lamp. Replace lamp using Welch
Allyn part number 03800-U
or 03800-LED
The battery handle has
completely discharged. Charge the handle, check
the battery, and/or the
charger.
Spot is not centered. The aperture dial is not
centered. Move aperture dial to the
full detent position.
Not achieving full or
expected view. Unit is not in proper
operating position. Ensure that the eyecup is
slightly compressed during
the procedure.
Can not obtain sharp
focus/hazy view. The lenses are dirty. Clean the lenses with a
clean/soft optical grade
cleaning cloth.