4. MAINTENANCE
WARNING: The following instructions are for use by qualified personnel only. To avoid electrical shock, do not
perform any servicing other then contained in the operating instructions unless you are qualified to do so.
Fuse Replacement
If the AC fuse blows, the CV or CC lamp will not light and the power supply will not operate. If the DC fuse blows, the
CV or CC lamp and digital display is light but DC OUTPUT will not operate. The fuse should not normally open
unless a problem has developed in the unit. Try to determine and correct the cause of the blown fuse, then replace only
with a fuse of the correct rating and type.
The fuse is located on the rear panel.
Line Voltage Conversion
The primary winding of the power transformer is tapped to permit operation from 115,230 VAC, 50/60 Hz line voltage.
Conversion from one line voltage to anther is done by AC select switch on the rear panel.
The line voltage to switch the unit was factory setted. To convert to a different line voltage, perform the following
procedure;
a) Make sure the power cord is unplugged.
b) Change the AC selects switch to the desired line voltage position.
c) A change in line voltage may also require a corresponding change of fuse value. Install the correct fuse value as
listed on rear panel.
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