11
Trouble Shooting
If the instrument fails to operate, check batteries and test leads etc., and replace as
necessary. Double check operating procedure as described in this user’s manual.
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:
Standard 1.5V AAA Size (NEDA 24A or IEC LR03) battery X 2
Fuse use:
Fuse (FS1) for
AmA current input:
0.4A/1000V ac & dc, IR 30kA, F fuse, or better; Dimension: 6 x 32 mm
Fuse (FS2) for A current input:
11A/1000V ac & dc, IR 20kA, F fuse, or better; 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.
