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.

— 9 —
■ To replace the back-up battery
Important!
• Do not remove the back-up battery from the Digital Diary while the main batteries are removed.
• Be sure to replace the back-up battery at least once every 5 years. Otherwise, you run the risk of
losing data stored in memory.
1. Press to turn power off.
2. Remove the screw that holds the back-up battery compartment cover in place and open the cover.
3. Insert a thin, pointed object into (A) and remove the old battery.
4. Load a new battery into the compartment, making sure that its positive side is facing up (so you can
see it).
5. Replace the battery compartment cover and secure it with its screw.
• Take care that you do not overtighten the screw.
START
(A)

— 10 —
5. DATA COMMUNICATIONS
■Setting Up for Data Communications
The following describes what you would do to set up for data communications between two Digital
Diary units.
To connect to another Digital Diary unit
1. Make sure that the power of both units is turned off.
2. Open the covers of the data communications jacks of the two Digital Diary units.
3. Connect the two units using the SB-62 cable.
Important!
• Be sure to replace the connector covers on the Digital Diary units when you are not performing
data communications.
■DATA TRANSMISSION FROM A UNIT TO ANOTHER UNIT
Performing the following procedure, you can transfer the data from a unit (S) for sending to
another unit (R) for receiving without entering password even if unit (S)’s data are protected
by password.
Remarks:
1. The units should be the same models because these units should have the same memory capacity
and functions.
2. Press button if you abort any operation.
PROCEDURE
1Connect two units using the SB-62 cable as described above.
2Turn both units power on.
3Press button on the unit (R)’s rear panel using a thin, pointed object.
Press , then button (RESETTING OF THE UNIT (R)).
4Pressing button once or twice, displays home time message, then press
and then 1(Time set) button with both units.
5Set the time to 3, 1901 (2/3/1901) using -> button and numeral buttons with both units
(press ->, ->, 0, 2, ->, 0, 3, ->, 1, 9, 0, 1and button.).
6Press , , and then 4 (( )) button with the units
(S).
7Press , , 4 ( ) and then button with the unit (R).
8Pressing button with the unit (S), the data transmission from the unit (S) to the unit (R) starts to
perform.
(After this transmission, home time message appears with unit (R). Wait for a while until
this message appears.)
9After the transmission, don’t turn the unit (R)’s power off and confirm to exist the transferred data in
the unit (R) also.

— 11 —
6. OPERATION CHECK
REMARKS:
1. Executing this check clears the data stored in the Digital Diary. If you do not want them to
be cleared, you should store them in another Digital Diary (SF-5580RS/-5780RS) referring to
the “5. Data communications” in this manual.
2. You cannot put out the light from EL while executing this check.
■LCD CHECK
1Press button on the rear panel while press-
ing button on the front panel.
LCD display appears as shown right.
figure-1
2Press button four times.
LCD display appears as shown right.
figure-2
3Then press button.
LCD display appears as shown right.
figure-3
4Press button again.
LCD display appears as shown in the figure-1 again.
■ROM CHECK
5Wait 4 to 5 seconds, then press button.
LCD display ROM TEST ROM OK
■RAM CHECK
6Press button.
LCD display ROM TEST ROM OK
RAM TEST
figure-1
figure-2
figure-3

— 12 —
7Wait about 45 to 50 seconds.
In the case of SF-5580RS.
LCD display ROM TEST ROM OK
RAM TEST 1 2 8 K OK
In the case of SF-5780RS.
LCD display ROM TEST ROM OK
RAM TEST 1 2 8 K OK
2ND
RAM TEST 1 2 8 K OK
■KEY CHECK
8Press button.
LCD display KEY TEST
9After pressing any button, LCD displays a letter or a number correspond to its button.
Check all keys (buttons) in this way except to button.
■COMMUNICATION CHECK
0Press button.
LCD display 1 COMM 2 ECHO
APrepare another unit, then execute the procedure described above 1~ 0.
Another unit’s
LCD display 1 COMM 2 ECHO
BConnect two units using the SB-62 cable as shown in the “5. DATA COMMUNICATIONS” (page
10) in this manual.
CPress 1button on a unit (A) while pressing 2button on another unit (B).
Unit (A)’s
LCD display 1 COMM 2 ECHO OK
Unit (B)’s
LCD display 2 ECHO OK
If this OK was displayed, another unit (B) transmitted data to a unit (A).

— 13 —
DPressing buttons on the both units, regain to the condition described in the item B.
LCD displays on the both units indicates the same display as shown in the item A.
ENext, try to transmit data from another unit (B) to a unit (A).
FRegain to the condition described in the item Busing button.
GPressing button twice, the following message appears.
( )
HPressing button, the following message appears.
( )/
IPressing button. [Doing so, the data stored in this Digital Diary are deleted]

— 14 —
7. ERROR MESSAGES
■ Data Error Message
The data error message appears whenever the Digital Diary’s internal check discovers a problem with
data stored in memory.
Appearance of the data error message indicates that you must perform the all-reset procedure to
correct the problem. Start out with the procedure under “To start the all-reset operation” on page 6,
and continue with the procedure under “When to press for “Yes” on page 6”.
Important!
• Even though you are not using the unit for the first time, you must press (for “Yes”) when the unit
asks “ ( )” in order to reset
the unit after a data error occurs.
If you still have trouble after trying the operation, you may have a hardware problem.
■Message Table
Action
Change specification or cancel
search.
Delete unnecessary data items
from memory.
Set a different alarm time or
change the existing alarm time.
Set a different alarm time.
Cancel the operation and try
again.
Message
.
(NOT FOUND!
PRESS TO QUIT.)
,
.
(MEMORY FULL, PRESS
ANY KEY.)
(ALARM TIME COINCIDENT!)
(ALARM TIME ALREADY
PASSED!)
.
(DATA COMM. ERROR,
PRESS ANY KEY)
Meaning
Data specified in search operation
does not exist in memory.
No more room in memory for stor-
age of data.
Attempt to set an alarm that is al-
ready used for another entry.
Attempt to set an alarm for a time
or data that is already passed.
Error during data communica-
tions.

— 15 —
Action
See page 6.
See page 6.
Replace main batteries imme-
diately (page 8).
Message
( )
(ARE YOU USING A NEW
UNIT FOR THE FIRST TIME?
(Y/N))
( )/ ( )
(CLEAR MEMORY AND SET
UP THE UNIT FOR OPERA-
TION?
YES ( )/
NO ( ))
(DATA ERROR! CHECK
YOUR OWNER’S MANUAL
FOR PROCEDURE!)
(MAIN BATTERIES WEAK!
REPLACE THEM! UNIT WILL
NOT TURN ON AGAIN!)
Meaning
The reset procedure has started.
The reset procedure is in
progress.
Data corrupted by strong impact,
electrostatic charge, etc..
The main batteries are getting
weak.

— 16 —
Pin No. Name I/O Function
1VDD I Power suppl
y
for this CPU
2~65 S1~48,C1~16 O Common si
g
nals to LCD
66 V1 O
67 V2 O
68 V3 O Bias power suppl
y
to LCD
69 V4 O
70 V5 O
71 VLCD O Power suppl
y
to LCD
78 VSS — Ground for this CPU
80 P41 O Clock for LCD driver LSI
(
U2, U3:LC868900
)
82 P43 O Signal to LCD driver LSI(U2, U3:LC868900)(AC voltage is supplied to LCD by this
si
g
nal.
)
84 P46 O Read si
g
nal to RAM
(
U42
,
U62
)
and LCD driver LSI
(
U2
,
U3:LC868900
)
85 P47 O Write si
g
nal to RAM
(
U42
,
U62
)
and LCD driver LSI
(
U2
,
U3:LC868900
)
87 P71 I Detection of low batter
y
volta
g
e
(
=2.5V
)
from IC
(
U2:S80725
)
90 P10 O Serial data output to another unit or a personal computer
91 P11 I Serial data input from another unit or a personal computer
93 P13 O Control si
g
nal to power suppl
y
IC
(
DC/AC inverter IC
)
for EL
(
H: EL-OFF/L: EL-ON
)
96 P16 O Control si
g
nal for buzzer
(
H: buzzer-ON/L: buzzer-OFF
)
98 P57 O Chip select to LCD driver LSI
(
U3:LC868900
)
99 P56 O Chip select to LCD driver LSI
(
U2:LC868900
)
101 P54 O Clock to IC
(
U8:74HC273
)
for the ke
y
board data latch
102 P53 O Control si
g
nal to LCD driver LSI
(
U2, U3:LC868900
)
104 P51 O Address bus to RAM
(
U42, U62
)
105 P50 O Address bus to ROM
(
U5
)
106 VDD1 O Power suppl
y
for this CPU
107 P30 I
108 P31 I
109 P32 I
110 P33 I Si
g
nals for ke
y
assi
g
n from ke
y
board
111 P34 I
112 P35 I
113 P36 I
114 P37 I
115 P00 I/O
116 P01 I/O
117 P02 I/O
118 P03 I/O Address bus to the address data latch IC
(
U7:74HC373
)
119 P04 I/O
120 P05 I/O
121 P06 I/O
122 P07 I/O
123 P20 O
124 P21 O
125 P22 O
126 P23 O Address bus to ROM
(
U5
)
and RAM
(
U42, U62
)
127 P24 O
128 P25 O
129 P26 O
130 P27 O
131 ADLC O Control si
g
nal to the address data latch IC
(
U7:74HC373
)
132 -EROE O Chip select to ROM
(
U5
)
133 -RST I Reset si
g
nal for this CPU and LCD driver LSI
(
U2, U3:LC868900
)
134 XT1 I Timer clock for this CPU
135 XT2 O
136 VSS — Ground for this CPU
137 CF1 I Main clock for this CPU
138 CF2 O
8. LSI PIN FUNCTION
CPU (LC868016A): U1

— 17 —
9. SCHEMATIC DIAGRAMS
9-1. Main PCB ASS’Y (A342054*13)-(1/4)

— 18 —
9-1. Main PCB ASS’Y (A342054*13)-(2/4)