User's Guide
SF-3990
E
RCA500238-1
GUIDELINES LAID DOWN BY FCC RULES FOR USE OF THIS UNIT
IN THE U.S.A. (not applicable to other areas).
NOTICE
This equipment has been tested and found to comply with the limits for a
Class B digital device, pursuant to Part 15 of the FCC Rules. These limits
are designed to provide reasonable protection against harmful interfer-
ence in a residential installation. This equipment generates, uses and
can radiate radio frequency energy and, if not installed and used in ac-
cordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will
not occur in a particular installation. If this equipment does cause harm-
ful interference to radio or television reception, which can be determined
by turning the equipment off and on, the user is encouraged to try to
correct the interference by one or more of the following measures:
· Reorient or relocate the receiving antenna.
· Increase the separation between the equipment and receiver.
· Connect the equipment into an outlet on a circuit different from that
to which the receiver is connected.
· Consult the dealer or an experienced radio/TV technician for help.
Caution: Changes or modification to the product not expressly approved
by CASIO could void the user's authority to operate the product.
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English
Congratulations on your selection of this CASIO product! Be sure to keep
this manual in a safe place for future reference when necessary.
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Contents
Read this first! ........................................................................................ E-3
Timekeeping Function ............................................................................ E-5
Alarm Function ....................................................................................... E-8
Inputting Characters .............................................................................. E-9
Recalling Data ..................................................................................... E-15
Editing Data ......................................................................................... E-15
Secret Memory Area ............................................................................ E-16
Conversion Mode ................................................................................. E-17
Memory Capacity Screen .................................................................... E-21
Calculator Mode ................................................................................... E-22
About the Power Supply ...................................................................... E-23
Messages ............................................................................................ E-25
World Time City Table .......................................................................... E-26
Storage Capacity ................................................................................. E-27
Specifications ....................................................................................... E-27
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Read this first!
Before using the unit for the first time
Use the following procedure to load batteries and reset the unit before using
it for the first time.
1. Slide the battery compartment cover in the direction indicated by the arrow.
2. Slide the battery switch to the "REPLACE 1" setting.
3. Load the new battery into the battery compartment, making sure that the
positive (+) side of the new battery is facing up (so you can see it).
4. Slide the battery switch to the "REPLACE 2" setting and repeat step 3
for the other battery.
· Be sure to load two new CR2032 batteries only. Never mix an old battery
with a new one.
5. Slide the battery switch to the "LOCK" setting.