National 167 Series Instructions For page 8

Compound biological microscopes
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B.
ELECTRICAL MAINTENANCE
WARNING: FOR YOUR SAFETY, TURN SWITCH OFF AND REMOVE PLUG FROM POWER SOURCE
OUTLET BEFORE MAINTAINING YOUR MICROSCOPE.
1.
Replacement of lamp.
a.
Carefully lay instrument on its side, taking care to avoid damage to the specimen slide holder
located on top of mechanical stage.
b.
Remove 5ea cross head screws, holding base plate.
c.
Carefully lay the base plate flat on the table.
d.
Disconnect the LED cable from the plug socket on the LED circuit card.
Your microscope requires a 3W LED bulb assembly – Part # 800-500
e.
f.
The LED bulb is located within the lamp housing. It is held in place with screw on holder. Simply
unscrew the ring holder to remove the bulb assembly.
g.
Assemble the unit in the reverse order.
8

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This manual is also suitable for:

168 seriesDc20-169 series169-btw1 series169 series

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