8
Auto Power Off (APO)
When the meter is on, the Auto Power Off (APO) feature will switch the meter to sleep
mode automatically after approximately 30 minutes of no slide-switch nor push button
operations to extend battery life. To wake up the meter from APO, press any
push-buttons momentarily or set the slide-switch to the OFF position and then slide
back on again. Always set the slide-switch to the OFF position manually when the
meter is not in use.
5) MAINTENANCE
WARNING
To avoid electrical shock, disconnect the meter from any circuit, remove the test leads
from the input jacks and turn OFF the meter before opening the case. Do not operate
with open case.
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.
Cleaning and Storage
Periodically wipe the case with a damp cloth and mild detergent; do not use abrasives
or solvents. If the meter is not to be used for periods of longer than 60 days, remove
the batteries and store them separately
