Safety Instructions and Mantenance
- IF EARPHONES
(not included) ARE USED,
BE SURE THEY ARE NOT TOO LOUD.
- ONLY ADULTS SHOULD REMOVE OR
- If a battery is swallowed, call a doctor
- Batteries should be kept away from children who
still might put things in their mouths.
- Use only 1.5-volt alkaline AA-size batteries—2
- Install batteries with correct polarity—that
is, with the "+" and/or "-" on both batteries aligned with the "+"
and/or "-" markings in the battery compartment.
- Use only batteries of the same type.
- Do not mix old and new batteries.
- Do not mix alkaline, standard (carbon-zinc), or
rechargeable (nickel-cadmium) batteries.
- Do not use rechargeable batteries.
- Do not try to recharge non-rechargeable
- The supply terminals must not be
- Remove exhausted or corroded batteries.
- Dispose of old batteries lawfully and promptly.
- Remove batteries to prevent corrosion if the
FlashMaster will not be used for at least 2 weeks.
- Do not expose batteries to fire or heat since
batteries may explode or leak corrosive or toxic material, etc.
HOW TO INSTALL BATTERIES
Following the safety
instructions above, an adult should:
Push open the loosely-hinged
battery compartment door after
carefully loosening its screw with a screwdriver.
Neither the door nor the screw should be removed
Install 2 new AA-size 1.5-volt alkaline batteries
with correct polarity (+,-) following the illustration inside the
Close the compartment door and tighten the screw.
Installing batteries "resets" the FlashMaster—restoring all its original
settings and erasing its temporary memory, including all stored results
and missed or “entered” problems.
Installing batteries "resets" the FlashMaster—restoring all its
original settings and erasing its temporary memory, including all stored
results and missed or “entered” problems.
MORE MAINTENANCE INSTRUCTIONS
Use common sense to protect the Flashmaster
Handle the FlashMaster
gently and carefully.
Do not drop the
FlashMaster is carried in a backpack, it should be located,
cushioned, and/or wrapped in order to protect it—especially its display
(“LCD”) and keys.
Keep the FlashMaster dry. If it gets wet,
dry it immediately.
Do not expose it to severe cold or high
heat. For example, do not leave it on the dashboard of a car.
Wipe it with a damp cloth to clean it. Do
not use cleaning solvents or strong detergents or chemicals.
If “REPLACE BATTERIES” blinks, new
ones are needed.
Multiplication Tables, Division Tables, Addition Tables, and Subtraction Tables
The FlashMaster is the key to