In this section:
Introduction .............................................................................. 4-1
Line fuses ................................................................................. 4-1
Front-panel display ................................................................... 4-2
Fan operation ........................................................................... 4-2
Air intake ventilation screens.................................................... 4-3
Solid-state hard drive maintenance .......................................... 4-4
Repacking for shipment ........................................................... 4-4
Firmware upgrade .................................................................... 4-4
Accessing the release notes .................................................... 4-5
Reset the hardware .................................................................. 4-5
Lithium battery .......................................................................... 4-5
Calibrate the system ................................................................ 4-5
Introduction
The information in this section describes routine maintenance of the instrument that the operator can
perform.
Line fuses
Rear-panel fuses protect the power line input of the unit.
Turn off the power and disconnect the line cord before replacing the fuses. Failure to turn off
the power and disconnect the line cord before replacing the fuses may result in personal
injury or death due to electric shock.
To replace the line fuses:
1. Locate the fuses. The fuses are in two fuse holders above the ac receptacle.
2. Use a small slotted screwdriver to remove each fuse holder.
3. Push the fuses in and rotate them counterclockwise to remove the fuses from the fuse holders.
4. Replace the fuses with the correct type according to your line voltage:
▪ 100 V ac to 125 V ac: 250 V, 15 A, 5 x 20 mm, slow-blow
▪ 220 V ac to 240 V ac: 250 V, 8 A, 5 x 20 mm, slow-blow
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