Casio SF-5580RS User manual

SF-5580RS/5780RS(ZX-460)
R
JAN. 1998
(without price)
SF-5780RS
INDEX

CONTENTS
1.SPECIFICATIONS....................................................................................................1
2.GENERAL GUIDE
2-1.Appearances and display indicators.........................................................................3
2-2.Power Supply...............................................................................................................4
2-3.EL backlight.................................................................................................................5
3.RESET OPERATION................................................................................................6
4.BATTERY REPLACEMENT.....................................................................................8
5.DATACOMMUNICATIONS....................................................................................10
6.OPERATION CHECK..............................................................................................11
7.ERROR MESSAGES..............................................................................................14
8.LSI PIN FUNCTION................................................................................................16
9.SCHEMATIC DIAGRAMS
9-1.Main PCB ASS’Y (A342054*13)-(1/4)........................................................................17
9-1.Main PCB ASS’Y (A342054*13)-(2/4)........................................................................18
9-1.Main PCB ASS’Y (A342054*13)-(3/4)........................................................................19
9-1.Main PCB ASS’Y (A342054*13)-(4/4)........................................................................20
9-2.Keyboard PCB ASS’Y(A342241*1)-(1/3)..................................................................21
9-2.Keyboard PCB ASS’Y(A342241*1)-(2/3)..................................................................22
9-2.Keyboard PCB ASS’Y(A342241*1)-(3/3)..................................................................23
10.DISASSEMBLY PROCEDURE...............................................................................24
11.PARTS LIST............................................................................................................27
12.EXPLODED VIEW..................................................................................................29

— 1 —
1. SPECIFICATIONS
■ Model: SF-5580RS/SF-5780RS
Main Modes:
Telephone Directory, Memo, Schedule Keeper, To Do, Expense Manager, Reminder, Calendar, Home
Time, World Time, Calculator, Conversion (metric/currency) and Game (Poker/21)
Data storage:
Storage and recall of telephone, memo, schedule, to do, expense, reminder data; calendar display;
editing; memory status display
Clock:
World time; reminder alarm; schedule alarm; daily alarm; accuracy under normal temperatures: ±3
seconds average
Calculation:
12-digit arithmetic calculations; independent memory; percentages; square roots; other mixed calcu-
lations
■ General:
Display element: 26-column ×8-line LCD
Memory capacity: SF-5580RS: 128 KB
SF-5780RS: 256 KB
Main component: LSI
Power supply:
Main: Two AAA-size alkaline batteries (Type: LR03 (AM4))
Back-up: One CR2032 lithium battery
Battery life:Main: • Approximately 130 hours of continuous display only in Telephone
Directory Mode.
•Approximately 90 hours with 55 minutes of continuous display
only and 5 minutes of processing operation per hour.
•Approximately 80 hours with 55 minutes of continuous display
only and 5 minutes of processing operation per hour, plus 3 min-
utes of backlight operation per hour during continuous display
only period.
Back-up: Approximately 5 years if main batteries are replaced as soon as
they become weak. Approximately 2 years if dead main batteries
are left in the unit.
Power consumption: 0.25 W
Current consumption:
Main (Input voltage = 3.0 V): Telephone top menu (Backlight doesn't shine)-
4.3 mA (TYP.)/5.3 mA (MAX.)
Telephone top menu (Backlight shine)-
27 mA (TYP.)/38 mA (MAX.)
OFF (Using Mask ROM: regular)-
90 µA (TYP.)/130 µA (MAX.)
OFF (Using Flash ROM: irregular)-
120 µA (TYP.)/160 µA (MAX.)
Back-up (Input voltage = 3.0 V): 2.4 µA (TYP.)/10 µA (MAX.)
Auto power off: Approximately 3 minutes after last key operation
Operating temperature: 0 °C ~ 40 °C (30 °F ~ 104 °F)
Dimensions:
Unfolded: 8.8 H ×163 W ×169 D mm (3/8"H ×67/16 "W ×65/8 "D)
Folded: 21.5 H ×163 W ×91.5 D mm (7/8 "H ×67/16 "W ×35/8 "D)
Weight: Approximately 250 g (8.8 oz) including batteries

— 2 —
■ Memory Capacity
Memory capacity differs according to model.
Model Memory
SF-5580RS:128 KB
SF-5780RS:256 KB
The following shows the number of items that can be stored in each model.
Telephone Directory
8-character name, 10-character Phone ( ) 1 number
SF-5580RS/SF-5780RS: 4,500/10,000
8-character name, 10-character Phone ( ) 1 number, 20-character address ( )
SF-5580RS/SF-5780RS: 2,300/5,000
Memo
20-character memo
SF-5580RS/SF-5780RS: 3,900/8,500
To Do
20-character description
SF-5580RS/SF-5780RS: 3,600/8,000
Schedule Keeper
20-character description, alarm time setting
SF-5580RS/SF-5780RS: 3,000/6,600
Reminder
10-character description
SF-5580RS/SF-5780RS: 4,200/9,200
Expense Manager
10-character description
SF-5580RS/SF-5780RS: 4,000/8,900

— 3 —
key keyboard
Memory keys
Mode key
10-key pad
Operator keys
key
Cursor keys
keys
key
Display
Mode keys
key
key
2. GENERAL GUIDE
2-1. Appearances and display indicators
When lighting is dim, you can turn on an EL (electro-luminescent) backlight for easier viewing.
■To turn on the EL backlight
There are two ways to turn on the backlight of the display. Pressing causes the backlight to
turn on for about 15 seconds, and then turn off automatically. Pressing and then
also turns on the backlight, but in this case the backlight stays on as long as you keep performing key
operations on the Digital Diary. The backlight turns off automatically if you do not perform any key
operation for about 15 seconds.
Leaving the backlight on for long periods greatly reduces battery life!
You can manually turn the backlight off by pressing again.
Failure of the backlight to turn on indicates low battery power. Replace batteries as soon as possible.

— 4 —
2-2. Power Supply
Your Digital Diary is powered by two AAA-size batteries, and its memory is protected by a single
CR2032 lithium battery.
■ Low battery Warning
Failure of anything to appear on the display after you turn on power or appearance of the low battery
message, “
” (followed by the display turning off in about 10 seconds) normally indicates that main
battery power is low.
Note, however, that pressing the button on the back of the unit and then performing steps
1 and 2 of the procedure under “When to press for “no”” above can sometimes restore normal
operation. When the low battery message appears on the display even if you perform these steps, it
means you should replace the main batteries as soon as possible.
Note
• Take care that you do not make a mistake and delete memory contents at this time.
Important!
• Replace batteries only when low battery power is indicated by failure of the Digital Diary to turn on
when you press the key. Do not replace batteries as long as the Digital Diary turns on
normally when you press the key.
• There is no low battery warning for the back-up battery. Be sure to replace the back-up battery
once every 5 years.
• Be sure you keep a separate copy of all important data that you store in the Digital Diary.
1Telephone Directory Mode
2Memo Mode
3To Do Mode
4Reminder Mode
5Schedule Keeper Mode
6Calendar Mode
7Expense Manager Mode
8Home Time/World Time Mode
9Calculator Mode
0Conversion Modes
AGame Modes
BIndicates data above
C(SHIFT) key operation
DUpper-case input
E(ENGLISH/RUSSIAN)
key operation
F(NEW/EDIT) screen
GIndex display
HData display
ISnooze feature activated
JDaily alarm on
KKey sound on
LMemory locked
MLow battery warning
NIndicates data below
■Display Indicators

— 5 —
■Battery Precautions
Incorrectly using batteries can cause them to burst or leak, possibly damaging the interior of the
Digital Diary. Note the following precautions.
• Be sure that the positive (+) side of each battery is facing in the correct directions.
• Never mix batteries of different types.
• Never mix old batteries and new ones.
• Do not expose batteries to direct heat, let them become shorted, or try to take them apart.
• Never leave dead batteries in the battery compartment.
• Remove batteries if you do not play to use the unit for a long time.
• Replace batteries at least once every five years, no matter how much you use the unit during that
period.
• Never try to recharge the batteries that come with the unit.
• Should a battery leak, clean out the battery compartment of the unit immediately, taking care to
avoid letting battery fluid come into direct contact with your skin.
Keep batteries out of the reach of small children. If swallowed, consult with a physician imme-
diately.
2-3. EL backlight
• This unit is equipped with an EL backlight that allows easy viewing of display contents in a theater,
or anywhere else where lighting is dim.
• Note, however, that frequent or extended use of the EL backlight shortens battery life.
The following shows how backlight use affects battery life under controlled test conditions.*
*Test Conditions
• “Battery Life” is the number of hours before battery failure when the unit is left on with 5 minutes of
a processing operation and 55 minutes of continuous display only (no processing operation) per
hour, plus the backlight operation described below.
• “Backlight Operation” is the number of minutes the backlight is turned on per hour during the
display only (no processing operation) period.
Backlight Operation Battery Life
3 minutes per hour Approximately 80 hours
15 minutes per hour Approximately 45 hours

— 6 —
3. RESET OPERATION
Use the following procedure to reset the unit to its initial settings.
Important!
• Do not use a very sharp pencil or other object to press the button.
• Be sure to reset the unit before using it for the first time.
• Perform the reset operation only after main batteries and back-up battery are correctly installed.
• Be sure to press the button after loading main batteries for the first time or if the previous
set of batteries went dead.
■ To start the all-reset operation
1. Turn power off.
2. Press the button on the back of the Digital Diary with a thin, pointed object.
3. Now you should press for “yes” or for “no” in accordance with the conditions described below.
When to press for “yes”
• When this is the first time you are using the unit.
• When you want to reset the unit and clear all data and settings.
• When you are resetting the unit after a data error (page 14).
1. Press in response to the message that appears on the display when you start the all-reset
operation.
START
START
button
2. Press to reset the Digital Diary or to abort.
• At this time the message “ ” appears.
• After about two seconds, the Home Time screen appears.

— 7 —
3. Press , select “ ”, and then use the procedure on page 18
of the User’s Manual to set the Home Time.
• If you turn power off without setting the Home Time, the “ ” message ap-
pears the next time you turn power on. The Digital Diary will not operate properly until you set the
Home Time.
When to press for “no”
• After replacing the main batteries.
• When you are not resetting the unit to clear all data and settings.
• When you are not resetting the unit after a data error (page 14).
1. Press in response to the message that appears on the display when you start the all-reset
operation.
• At this time the message “ ” appears.
• After about two seconds, the Home Time screen appears.
2. Press , select “ ”, and then use the procedure on page 18
of the User’s Manual to set the Home Time.
• If you turn power off without setting the Home Time, the “ ” message ap-
pears the next time you turn power on. The Digital Diary will not operate properly until you set the
Home Time.
• Following are the initial settings of the unit after you perform the all-reset operation.
Home Time: (Moscow)
(January), 1998 ( (Thursday)
0:00
24-hour format
World Time: (London)
Daily Alarm: 0:00
Sound: Daily alarm — OFF
Key — ON
Keyboard: Cyrillic
Character input: CAPS — OFF

— 8 —
4. BATTERY REPLACEMENT
■ To replace the main battery
Important!
• Do not remove the main batteries from the Digital Diary while the back-up battery is removed.
• Be sure to replace both batteries with two new ones. Do not mix an old battery with a new one.
• Be sure to press the button after loading main batteries for the first time or if the previous
set of batteries went dead.
• Replace batteries only when low battery power is indicated by failure of the Digital Diary to turn on
when you press the key. Do not replace batteries as long as the Digital Diary turns on
normally when you press the key.
1. Press to turn power off.
2. Remove the screw that holds the battery compartment cover in place and open the cover.
START
3. Remove both old batteries and replace them with new ones.
• Make sure that the positive (+) and negative (–) ends are facing correctly.
4. Replace the battery compartment cover and secure it with its screw.
• Take care that you do not overtighten the screw.
5. Press the button.
• This causes the message “
()” to appear. Be sure to press in response to this message (pressing will delete all data in
memory). Next, continue with the procedures in the section title “3. RESET OPERATION” on page
6.