Storz 201340 20, Service Manual

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4.5 Replacement of lamp
Refer to Section 4.9 Figures for replacements – figures 1 and 2 .
a. Disconnect the light source from its power source.
b. Remove the outer cover by sliding the interlock slide to the right, removing the four screws on the
bottom of the case, and sliding the cover back.
c. Lift the lamp insulator and fold it back.
d. Unscrew the four heat sink thumbscrews.
e. Carefully remove the upper half of each heatsink. Remove the old lamp.
Caution: Lamps are high pressure vessels and must be handled with care. When
handling the lamp wear safety glasses and face shields to protect the face
and gloves to prevent skin oil transfer. Never touch the porcelain insulator on
the lamp with bare hands.
f. Apply a thin coating of thermal joint compound around the inside circumference of the heatsinks
(both anode and cathode) as well as on the anode end surface.
g. Reassemble in reverse order of disassembly.
Note: It is recommended that new lamps be used for eight hours in the light source prior to clinical
use if purchased from a source other than KARL STORZ.
4.6 Replacement of attenuator assembly
Refer to Section 4.9 Figures for replacements – figures 1 and 3 .
a. Disconnect the light source from its power source.
b. Remove the outer cover by sliding the interlock slide to the right, removing the four screws on the
bottom of the case, and sliding the cover back.
c. Remove the front panel assembly by removing the four screws with the T10 driver and pulling the
front panel forward.
d. Remove the brightness control knob by removing the set screw with an M3 hex wrench.
e. Remove the two retaining screws holding the attenuator assembly to the posts and remove the
assembly, sliding the post for the knob out of its hole.
f. Replace the attenuator assembly and reassemble in reverse order of disassembly.
4.7 Replacement of condenser lens
Refer to Section 4.9 Figures for replacements – figures 1 and 3 .
a. Remove the attenuator assembly as described in Section 4.6 Replacement of attenuator assembly .
b. Remove the three retaining screws holding the lens.
c. Replace the condenser lens and reassemble in reverse order of disassembly. Tighten the retaining
screws a little at a time, moving in a circular pattern in order to keep the correct orientation of the
lens. Avoid overtightening the screws.
4.8 Replacement of the hot mirror assembly
Refer to Section 4.9 Figures for replacements – figures 1 and 2 .
a. Disconnect the light source from its power source.
b. Remove the outer cover by sliding the interlock slide to the right, removing the four screws on the
bottom of the case, and sliding the cover back.
c. Lift the lamp insulator and fold it back.
d. Unscrew the thumbscrews on the heat sinks.
e. Carefully remove the upper half of the heatsinks and the lamp as described in Section 4.6
Replacement of attenuator assembly .
f. Remove the nuts holding the bottom front heatsink.
g. Bend tabs holding the hot mirror assembly in place.
XENON NOVA
®
300
MODEL 20
1340 20
4-4
06.11 / V1.6