Filter
Top Products
7-4SectionInspection and Cleaning
245
3. Remove the battery that is secured under the battery cover, grip the cable,
and pull the connector straight out.
4. Insert the connector of the new battery into the connector on the
NT31/NT31C and fit the battery under the battery cover.
When inserting the battery connector, make sure that the projection on it
faces to the left, and press it fully home while keeping it straight.
The connector of the new battery must be connected within 5 minutes after
disconnecting the old battery’s connector. However, the battery can be re-
placed while the NT31/NT31C power is on, and in this case there is no time
restriction.
5. Close the battery cover, making sure that the cable is not trapped.
7-4 Inspection and Cleaning
Clean and inspect the NT31/NT31C regularly to ensure that it is always used in
its optimum condition.
If the display is dirty the screen is difficult to see. Clean the screen from time to
time as follows.
• In daily cleaning, wipe the display with a soft dry cloth. If the soiling is particular-
ly heavy, attempting to remove it by wiping with a dry cloth may damage the
front sheet of the unit. In this case, wipe with a damp cloth.
• If the soiling cannot be removed with a dry cloth, wet the cloth with diluted neu-
tral detergent (2%), wring it out well and wipe the display with it.
• If rubber or vinyl products, tape, etc., are left stuck to the display for long peri-
ods they will cause staining. If such items are stuck to the display, remove them
during cleaning.
Note Never use volatile solvents such as benzene or thinners, or chemical dusters.
In normal environments, inspect the NT31/NT31C at intervals of between 6
months and a year. In environments that are extremely hot and humid, or very
dusty environments, shorten the inspection interval.
Items Required for The Inspection
Prepare the following items before starting the inspection.
• Screwdrivers (Philips, flat head)
• Tester (or digital voltmeter)
• Industrial alcohol
Cleaning Method
Inspection Method