16 MM560A-MM570A-EU-EN
V1.1 8/12
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. Install only the
same type of fuse or equivalent
Calibration
Periodic calibration at intervals of one year is recommended to maintain meter accuracy. Accuracy is
specified for a period of one year after calibration.
If self-diagnostic message “rE-O” is being displayed while powering on, the meter is re-organizing
internal parameters. Do not switch off the meter then, and it will be back to normal measurement
shortly. However, if self-diagnostic message “C_Er” is being displayed while powering on, some meter
ranges might be largely out of specifications. To avoid mis-leading measurements, stop using the
meter and send it for re-calibration. Refer to the WARRANTY section for obtaining warranty or repair
service.
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 a high voltage transient (caused by lightning or switching surge to the
system) by accident or abnormal conditions of operation, the series fusible resistors will blow (become
high impedance) like a fuse to protect the user and the instrument. Most measuring functions using
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 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 battery and store it
separately.
