Spectrum Analyzer Controller
Page 11
Rev D, February 26, 2013
3.2.
Replacing the Fuse
DANGER!
The Thorlabs Spectrum Analyzer Controller, SA201, must be powered off,
unplugged from the AC input source, and disconnected from any piezo
elements prior to replacing the fuse or removal of the cover. Failure to do
so may cause SERIOUS INJURY to the user, since high voltages exist
within the unit.
Materials Needed
•
SA201 Operating Manual – The most recent version of this operating
manual will be available on the Thorlabs web site.
•
250 mA Type ‘T’ Slow Blow Fuse – The 250 mA fuse is installed from
the factory. This must be installed when operating the unit at 100/115
VAC.
•
125 mA Type ’T’ Slow Blow Fuse – The 125 mA fuse is required for 230
V operation only. Thorlabs supplies a 125 mA fuse with all of its SA201
units and must be installed when operating at 230 VAC.
•
Phillips Head Screwdriver (#2 Preferred) – We do not recommend using
electrically powered screwdrivers.
Fuse Replacement
IMPORTANT
Disconnect the scanning head or any piezo device from the SA201 output.
Disconnect the power cord.
Do not open the unit if the power cord is connected.
1 Remove the two screws securing the enclosure cover with a Phillips
head screwdriver. The screws are located on the bottom side, rear
corners of the unit. Do not lose the screws.
2
Carefully remove the cover by sliding toward the rear of the unit.
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