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7. MAINTENANCE
The following instructions are used by qualified personnel only. To avoid electrical shock, do not perform any
servicing other than the operating instructions of the manual unless you are qualified to do so.
7-1.Fuse Replacement
If the fuse blown, the CV or CC indicators will not light and the power supply will not operate. The fuse should not
normally blow unless a problem has developed in the unit. Try to determine and correct 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 (see Fig. 4-2).
WARNING: For continued fire protection. Replace with 250V fuse of the specified type and rating,
and disconnect the power cord before replacing fuse.
7-2.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 another is done by change AC selects switch as shown in Fig. 4-2.
To convert to different line voltage, perform the following procedure:
(1) Make sure the power cord is unplugged.
(2) Set the AC switch to the desired line voltage position.
(3) The change of line voltage may also require a corresponding change of fuse value. Install correct fuse value
according to the instruction shown on rear panel.
WARNING
E15
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