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If the instrument voltage-resistance input terminal has subjected to high voltage
transient (caused by lightning or switching surge to the system) by accident or
abnormal conditions of operation, the series fusible resistors will be blown off (become
high impedance) like fuses to protect the user and the instrument. Most measuring
functions through this terminal will then be open circuit. The series fusible resistors and
the spark gaps should then be replaced by qualified technician. Refer to the LIMITED
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
AmA current input:
0.44A/1000V, IR 10kA or better, F fuse; Dimension: 10 x 38 mm
Fuse (FS2) for A current input:
11A/1000V, IR 20kA or better, F fuse; Dimension: 10 x 38 mm
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.