KYORITSU 3131A - Manual (Page 16)

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8. Battery & Fuse Replacement
8-1 Battery Replacement
① Disconnect the test probe from the instrument.
② Open the battery compartment cover by unscrewing the metal captive
screw to reveal battery compartment. Always replace all six batteries
with new ones at the same time.
Battery type: 6 x 1.5V battery type SUM-3, R-6, AA or equivalent
8-2 Fuse Replacement
① Disconnect the test probe from the instrument.
② Open the battery compartment cover by unscrewing the metal captive
screw to reveal battery compartment and replace the fuse.
Fuse type: F500mA/600V fast acting ceramic fuse φ6.35 x 32mm
Install batteries in correct polarity as marked inside the case.
DANGER
● Never open the battery compartment cover while making measurement.
To avoid possible electrical shock, disconnect the test probe before
opening the cover for battery and fuse replacement.
● Replacement fuse must have the following rating.
Fast acting type, F500mA/600V, φ6.35×32mm
Fig.8 How to replace batteries and fuse
SPARE FUSE
SCREW
FUSE
BATTERY