MD 9010 General Purpose Auto – Check Digitalmultimeter
Maintenance
9
5 Maintenance
WARNING
To avoid electrical shock, disconnect test leads from live circuits before opening the
case. Do not operate with open case.
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
Trouble Shooting
If the instrument fails to operate, check battery, leads, etc., and replace as necessary.
Double check operating procedure as described in this user’s manual
If the instrument voltage-resistance input has subjected to high voltage transient (mostly
caused by lightning or switching surge to your 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 input 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 replacement
If the meter starts up with persistent resetting display or with low battery icon
turns
on, replace the battery ASAP. The meter uses one 3V coin battery IEC-CR2032.
Before opening the case bottom, make sure the meter is switched off to avoid abrupt
power reset to a running meter system. Disconnect test leads from live circuits. Loosen
the screw from the case bottom. Lift the end of the case bottom nearest the input test
leads until it unsnaps from the case top. Replace the battery. Observe battery polarities
with positive (+) faces up (towards the case bottom). Replace the case bottom, and
ensure that the snap on the case top (near the LCD side) is engaged. Re-fasten the
screw.
Note:
*MD 9010 use micro-controller (like a computer) to run the meter system.
WHEN THE
METER IS POWER-ON,
intermittence battery power failure (fast intermittence battery
contact interval in the order of millisecond) may cause the meter reset/re-startup
abnormally. Simply press and hold the
SELECT
button for approximately 6 seconds to
master reset the system if such a situation occurs.
