DMM SANWA PC720M, Instruction Manual

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[6] MAINTENANCE
6-1 Simple Examination
1) Appearance
‡ Check for damaged appearance by dropping down and so on.
2) Test leads
‡ Check for loose contacts between the measuring terminals
and test lead plugs.
‡ Check for damaged test lead wires.
‡ Check for exposed core wire anywhere on the test leads.
If you find any problem on the above items, stop using immediately and
ask us to repair it.
Check for the test leads without breaking wires, referring to the section 5-1.
6-2 Calibration
If self-diagnostic message “rE-O” is being displayed while
powering on, the meter is re-organizing internal parameters. Do
not turn off the meter, 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 misleading measurements, stop
using the meter and send it for re-calibration. Refer to the AFTER-
SALE SERVICE section for obtaining warranty or repairing service.
For requesting calibration and inspection, contact an authorized
agent/distribution service provider, listed in our website.See
section 7-3.
1. The followings are important to safety. Read this manual
throughly to maintain the instrument.
2. Calibrate and inspect the instrument at least once a year to
ensure safety and maintain its accuracy.
WARNING
6-3 Battery and Fuse Replacement
1. Do not open the rear case with live measuring terminals to avoid
electric shock. Also, make sure the meter power is OFF, before
starting replacement.
2. Be sure to use the specified fuse. Neither use unspecified fuse nor
short-circuit the fuse holder.
WARNING
Pre-installed battery
Since the pre-installed battery is for monitoring, it may not be
durable as typically expected.
*The purpose of the battery for monitoring is to check for the
functions and performances of the product.
Replacement procedure
①
Remove the holster and loosen the Philips-head screw fixing
the battery door using appropriate screw driver.
②
Remove the battery door and replace the battery or fuse with
new one.
③
Re-fasten the screw and set the holster again.