Welch Allyn Audioscope 3 Portable Screening Audiometer - User Manual User Manual
Page 17
Lamp and Battery
Replacement
15
LAMP REPLACEMENT
To remove old lamp:
1. Turn AudioScope 3 “OFF.”
2. LAMP MAY BE HOT—ALLOW TO COOL BEFORE
PROCEEDING.
3. Follow instructions for cover removal (page 14).
4. Depress the blue lamp ejector lever (see Figure 1 below). The
lamp will pop up.
5. Grasp lamp and remove.
Figure 1
To insert new lamp:
1. For best performance of Halogen lamps, remove any dirt or
fingerprints from glass with a clean cloth moistened with 70%
Isopropyl Alcohol before inserting lamp. Failure to follow clean-
ing procedures will result in permanent stains on the glass
with reduction in light output. Average lamp life is 20 hours of
on-time.
2. Rest lamp on lamp holder bracket with beveled end of lamp
toward fiber optic bundle (see Figure 1 above).
3. Push lamp into lamp holder.
4. Follow instructions for cover replacement (page 16).
NOTE: Replace with Welch Allyn No. 06200 lamp only. Other
lamps may cause damage to the instrument or may cause
inaccurate readings.
Lamp ejector lever
Fiber Optic Bundle
Beveled end of lamp
WANM-3999-COL AudioScope3 3/11/97 1:24 PM Page 15