Casio CSF8950 Service Manual

CSF-8950 (ZX-859E, F)

(without price)

INDEX

FEB. 1996

CSF-8950

R

CONTENTS

1. FEATURES ........................................................................................................................ 1

2. SPECIFICATIONS.............................................................................................................. 2

3. GENERAL GUIDE.............................................................................................................. 4

4. BATTERY REPLACEMENT .............................................................................................. 5

5. RESET OPERATION ......................................................................................................... 6

6. TO SAVE THE DATA TO OTHER MACHINE ................................................................... 7

7. PIN FUNCTION ..................................................................................................................9

8. DIAGNOSTIC PROGRAM ............................................................................................... 10

9. ERROR MESSAGE.......................................................................................................... 14

10. SCHEMATIC DIAGRAMS................................................................................................ 15

11. PARTS LIST..................................................................................................................... 19

12. EXPLODED VIEW............................................................................................................ 22

1. FEATURES

3-color display

The display shows data in three colors: orange, blue and green. Different colors can be used to highlight
specific dates in the Calendar, and even the color of text data can be specified.

Desktop Menu System

Simply point to the item that represent the function you want to use and press a button.

Do Today Function

Every time you turn on the unit, any Schedule Keeper items scheduled for that date appear on the display.

256 Kbytes of memory

Enough memory to store up to 11,500 Telephone Directory items.

Powerful data bank functions

Telephone Directory, Business Card Directory, Memo, To Do, Expense Manager, Reminder, and
Schedule Keeper.

Secret Drawer

A convenient place to lock up confidential information using a secret password.

Calendar - Schedule Keeper - Reminder - To Do linking

Reminder and To Do items are automatically displayed in the applicable Schedule Keeper dates. Markers
appear on the Calendar display to indicate dates for which Schedule Keeper, Reminder, and To Do items
are scheduled.

Timepiece with Home Time and World Time

Dual timekeeping for two different locations.

Powerful alarm functions

In addition to the standard daily alarm, you can also set alarms for Schedule Keeper, Reminder, and To
Do items.

Calculator

A 12-digit arithmetic calculator is just the thing for those quick, on-the-go calculations.

Data Communication

Exchange data with another CSF Unit or with a CASIO SF Unit or NX Unit.

— 1 —

2. SPECIFICATIONS

Storage Capacity

The 256Kbytes memory capacity includes a 255,177 bytes user area. The following shows examples of
what this means for the storage of data in each mode.

Telephone Directory

Approximately 11,500, under the following conditions:

8-character name
10-character telephone number

Approximately 5,900, under the following conditions:

8-character name
10-character telephone number
20-character address

Business Card Directory

Approximately 3,000, under the following conditions:

10-character employer name
8-character personal name
10-character telephone number
10-character position
10-character department
20-character address

Memo

Approximately 11,000, 20-character memos.

To Do

Approximately 6,700, under the following conditions:

20 characters description
Deadline set

Schedule Keeper

Approximately 6,500, under the following conditions:

20 characters description
Illustration used
Starting time specified, alarm time set

Approximately 8,500, under the following conditions:

20 characters description
Illustration not used
Starting time specified, no alarm time

Reminder

Approximately 14,100, under the following conditions:

10 characters description
Alarm time set

Approximately 15,900, under the following conditions:

10 characters description
No alarm time

Expense Manager

Approximately 7,700, under the following conditions:

10 characters description
Expense type and payment type set

— 2 —

Main Modes:

Telephone Directory, Business Card Directory, Memo, Schedule Keeper, To Do, Expense Manager,
Reminder, Calendar, Home Time, World Time and Calculator

Data storage:

Storage and recall of telephone, business card, memo, schedule, to do, expense, reminder data;
calendar display; secret drawer; editing; memory status display

Clock:

Home time; world time; reminder alarm; schedule alarm; to do alarm; daily alarm; accuracy under normal
temperatures: ±3 seconds average

Calculation:

12-digit arithmetic calculations; arithmetic constants (+, -, ×, ÷); independent memory; percentages;
square roots; 24-digit approximations; date calculations; other mixed calculations

General:
Display element: 16-column × 8-line LCD
Memory capacity: 256KB
Main component: LSI

Power supply:

Main: Two AAA-size batteries (Type: R03 (UM-4) or LR03 (AM4))

Back-up: One CR2025 lithium battery

Battery life:

Main: Approximately 100 hours continuous display in Telephone Directory (approximately

180 hours on type LR03 (AM4)); approximately 80 hours repeating one minute of
input and 10 minutes of display in Telephone Directory (approximately 150 hours
on type LR03 (AM4))

Back-up: 5 years if main batteries are replaced as soon as they become weak. 1 year if dead

main batteries are left in the unit.

Power consumption: 0.06 W
Auto power off: Approximately 6 minutes after last key operation
Operating temperature: 0°C ~ 40°C (32°F ~ 104°F)

Dimensions:

Unfolded: 7.8H × 152.4W × 158D mm (5/16"H × 6"W × 61/4"D)

Folded: 17.5H × 152.4W × 85.8D mm (11/16"H × 6"W × 33/8"D)

Weight: 160 g (5.6 oz) including batteries

— 3 —

3. GENERAL GUIDE

Display

ON key —
Press this key to
turn power on.

OFF key —
Press this key to
turn power off.

Number
Keys

Cursor Key
Pad

Alpha
keyboard

COLOR SELECT
keys

About the desktop...

The desktop gives you point-and-select access to the data management features of the CSF-8950.
Whenever you want to return to the desktop, simply press the MENU button.

Home Time, World
Time, and Alarm

Telephone Directory and
Business Card Directory

• Note that one of the icons on the desktop is flashing. This means that the icon is selected.

How to use the desktop

1. Use the cursor keys to move the flashing around the desktop until the one you want is selected
(flashing).

2. After selecting an icon, press OK to access the functions of that icon.

• Selecting some icons (like the Clock and Telephone) cause another selection screen to appear.

• Details on actually using the features and functions that you access from the desktop are described
in the other sections of this manual.

MENU key

Calendar, Schedule
Keeper, Reminder and
Expense Manager

To Do

Calculator

Secret Drawer

Memo

Changing the Desktop Screen's Window Scenery

You can change the scenery that is outside the desktop screen's window to any one of the scenes shown
below. Simply display the desktop screen and press the COLOR SELECT key that corresponds to the
scenery you want to select.

ORG: Night-time city scene
BLU: Daytime city scene
GRN: Beach scene

— 4 —

Adjusting the Display Contrast

The following procedure describes how to adjust the color contrast, which controls the relative darkness
and lightness of each color on the display.

To adjust the display contrast

1. While the desktop is on the display, press FUNC.

2. Press 1 to select

SYSTEM

.

/////////// SYSTEM ///////////
1 SOUND
2 LANGUAGE
3 CAPACITY
4 CONTRAST
5 START UP

3. Press 4 to select

CONTRAST

.

//////////// CONTRAST ////////////

<O B G>

Pointer (currently
selected color)

(ORG)
(BLU)
(GRN)

4. Use and to move the pointer to the color whose contrast you want to set.

5. Use and to adjust the contrast of the currently selected color.

• You can adjust the overall contrast of the display by pressing or .

• Whenever you press one of the COLOR SELECT keys, the color contrast is returned to its initial
default setting.

6. After you finish adjusting the display contrast, press OK.

• Color contrast settings are registered as soon as you make them. Because of this, pressing either

OK or ESC quits the color contrast procedure only. Pressing ESC does not return the color contrast
setting to what is was.

4. BATTERY REPLACEMENT

Main Battery

Before replacing the main batteries, note the following precautions:

• Do not remove the main batteries from the CSF Unit while back-up battery is removed.

• Be sure to replace both batteries at the same time, and do not use an old battery with a new one.

1. Press OFF to switch power OFF.

2. Slide the main battery holder in the direction indicated by the arrow.

Main battery holder

RESET

(–)

AAA-size
batteries

(+)

3. Remove both old batteries and replace them with two new ones.

• Make sure that the positive (+) and negative (-) ends are facing correctly.

4. Replace the holder.

5. Turn on power

• The Home Time screen always appears whenever you turn power on for the first time after

replacing batteries.

6. Check the Home Time setting and make changes if necessary.

— 5 —

Back-up Battery

Before replacing the back-up battery, note the following precautions:

• Do not remove the back-up battery from the CSF Unit while main batteries are removed.

• Be sure to replace the back-up battery at least once a year. Otherwise, you run the risk of losing
data stored in memory.

1. Press OFF to switch power OFF.

2. Remove the screws that hold the back-up battery compartment cover in place, and remove the
cover.

RESET

Back-up battery
compartment
cover

3. Insert a thin, pointed object into (A) and remove the old battery.

CR2025 lithium

(A)

battery

4. Insert a new battery into the unit, making sure that the positive (+) side of the new battery is facing
up (so you can see it).

5. Replace the battery compartment cover and secure it by tightening its screw.

• Be careful that you do not over tighten the screw.

5. RESET OPERATION

1. Press ON to switch power ON.

2. Press the RESET button with a thin, pointed object.

RESET
button

RESET

Warning!

The next step deletes all data stored in the CSF Unit's memory. Make sure that you really want to delete
the data before you continue!

3. Press 1 to select

ALL RESET

.

Note

• The above message always appears in English, regardless of the system language setting.

— 6 —