BK Precision 5335B, User Manual

Page: 12 / 52

General Information 12
1.4 Input Power and Fuse Requirements
AC Voltage 110V
±10%
or 220V
±10%
Frequency 47Hz – 63Hz
An AC input fuse is necessary when powering the instrument. See Table 1.2 .
5335B Fuse Specification
1.25 A, 250 V
Table 1.2 Required Fuses
Figure 1.3 Fuse Holder
1.4.1 Fuse Replacement
1. Disconnect the power cord.
2. Locate the fuse box in the rear panel, beneath the AC power socket. Figure 1.3
3. With a small flat blade screwdriver, insert the blade into the fuse box slit to pull and slide out the fuse box.
4. Pull out the fuse inside to check and/or replace with the appropriate fuse for the line voltage used.
5. Insert the fuse in the same location.
1.5 Power-up Sequence
Connect AC power cord to the AC receptacle in the rear panel and press the power switch to the (ON) position to turn
ON the instrument. It will display the BIOS version then run through a self-test procedure.