15
Trouble Shooting
If the instrument fails to operate, check battery, fuses, leads, etc., and replace as
necessary. Double check operating procedure as described in this user’s manual
If the instrument voltage-resistance input terminal is subjected to accidental high
voltage transient the series fusible resistors will blow (become high impedance), like
standard fuses, to protect the user and the instrument. Most measuring functions
through this terminal will then be an open circuit. The series fusible resistors and the
spark gaps should only be replaced by qualified technician. Refer to the WARRANTY
section for obtaining warranty or repairing service.
Battery and Fuse replacement
Battery use:
Single 9V battery NEDA1604, JIS006P or IEC6F22;
or 9V alkaline battery NEDA1604A, JIS6AM6 or IEC6LF22
Fuses:
Fuse (FS1) for
μ
AmA current input: 0.44A/1000V, IR 10kA or better, F fuse
Fuse (FS2) for A current input: 11A/1000V, IR 20kA or better, F fuse
Battery replacement for models with battery access door:
Loosen the 2 screws from the battery access door of the case bottom. Lift the battery
access door and thus the battery compartment up. Replace the battery. Re-fasten the
screws.
Fuse replacement (and also Battery
replacement for splash proof version
without battery access door):
Loosen the 4 screws from the case
bottom. Lift the end of the case bottom
nearest the input jacks until it unsnaps
from the case top. Replace the blown
fuse(s) and/or the battery. Replace the
case bottom, and ensure that all the
gaskets are properly seated and the two
snaps on the case top (near the LCD
side) are engaged. Re-fasten the screws.
