Appendix C: Line Fuse Replacement
（Only for AC power supply model）
The line fuse is in the plastic fuse box below the power line input on the rear panel.
Warning: Disconnect the line cord at the rear panel and remove all test leads
connected to the instrument before replacing the line fuse. Failure
to do so could expose the operator to hazardous voltages that could
result in personal injury or death.
To perform the line fuse replacement, follow these steps:
1. Turn off the multimeter, remove all measurement leads and other cables from the
instrument, including the power cord.
2. Use a flat-blade screwdriver to remove the fuse box.
3. Replace the fuse with a new one, install it into the fuse box, and push the fuse box
back on to the rear panel.
Appendix D: Charging and Replacement of Battery
（Only for DC
power supply model）
During the long-term storage of the device, the battery may be too low due to the
self-discharge of the lithium battery and the device cannot be turned on. This is a
normal phenomenon.
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