Casio NX-4000 Troubleshooting guide

NX-4000/6000

(without price)

SEP. 1995

INDEX

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

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

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

REPLACING THE BACK-UP BATTERY ...................................................................... 4

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

TO SAVE THE DATA TO ANOTHER UNIT.................................................................. 6

BLOCK DIAGRAM ........................................................................................................ 8

TOUCH PANEL CIRCUIT.............................................................................................. 9

PIN FUNCTION............................................................................................................ 10

DIAGNOSTIC PROGRAM........................................................................................... 11

MESSAGE TABLE ...................................................................................................... 15

SCHEMATIC DIAGRAMS ........................................................................................... 17

PARTS LIST ................................................................................................................ 21

EXPLODED VIEW ....................................................................................................... 24

CONTENTS

— 1 —

FEATURES

• Pen-based graphic user interface

Simply tap on display icons and buttons to perform any operation.

• 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.

• Desktop Menu System

Functions are represented by realistic icons that are arranged on a desk in your virtual office. Simple tap on

the icon that represents a function to access it.

• 256 kbytes (NX-6000) / 128 kbytes (NX-4000) of memory

You get enough memory to store up to 11,100 (NX-6000) / 5,200 (NX-4000) Telephone Directory items.

• Powerful data bank functions

Telephone Directory, Business Card Directory, Memo, Sketch, To Do, Expense Manager, Reminder, and

Schedule Keeper are at your fingertips throughout the day.

• 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 Calender display to indicate dates for which Schedule Keeper, Reminder, and To Do items are

scheduled.

• Timepiece with Home Time and World Time

Dual timekeeping lets you keep track of the current time in 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 NX Unit or with a CASIO SF Unit/CSF Unit.

— 2 —

SPECIFICATIONS

Storage Capacity

The 256K (NX-6000) / 128K (NX-4000) bytes memory capacity includes a 245,709 / 114,637-byte user area.

The following shows examples of what this means for the storage of data in each mode.

Telephone Directory

Approximately 11,100 / 5,200, under the following conditions:

8-character name

10-character telephone number

Approximately 5,700 / 2,600, under the following conditions:

8-character name

10-character telephone number

20-character address

Business Card Directory

Approximately 2,900 / 1,300, 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 10,600 / 4,900, 20-character memos.

Sketch

Approximately 160 / 80

• The number of sketch pages that can be stored varies greatly according to the amount of data included

on each sketch page.

To Do

Approximately 6,100 / 2,800, under the following conditions:

20-character description

Illustration used

Deadline set

Schedule Keeper

Approximately 6,300 / 2,900, under the following conditions:

20-character description

Illustration used

Starting time specified, alarm time set

No sketch page data

Approximately 3,100 / 1,400, under the following conditions:

20-character description

Illustration not used

Starting time specified, no alarm time

One sketch page for every 30 text data items.

— 3 —

Reminder

Approximately 12,200 / 5,700, under the following conditions:

10-character description

Illustration used

Alarm time set

Approximately 14,400 / 6,700, under the following conditions:

10-character description

Illustration not used

No alarm time

Expense Manager

Approximately 7,400 / 3,400, under the following conditions:

10-character description

Expense type and Payment type set

General:

Display element: 21-column ×8-line LCD

Memory capacity: 256 KB (NX-6000), 128 KB (NX-4000)

Main component: LSI

Power supply:

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

Back-up: One CR2032 lithium battery

Battery life:

Main: Approximately 110 hours continuous display in Telephone Directory (approximately

200 hours on type LR03 (AM4)); approximately 85 hours repeating one minute of

input and 10 minutes of display in Telephone Directory (approximately 150 hours on

type LR03 (AM4))

Back-up: 5years if main batteries are replaced as soon as they becomes weak. 2 year if dead

main batteries are left in the unit.

Power consumption: 0.1 W

Auto power off: Approximately 6 minutes after last key operation

Operating temperature:0°C ~ 40°C (32°F ~ 104°F)

Dimensions:

Unfolded: 14.7 H ×81.9 W ×225 D mm (9/16" H ×3 1/4" W ×8 7/8" D)

Folded: 15.4 H ×81.9 W ×124 D mm (5/8" H ×3 1/4W ×4 7/8" D)

Weight: 148 g (5.2 oz) including batteries

Current consumption:

Main Battery

ON (MENU): MAX = 3.7 mA, TYP = 3.2 mA

OFF: MAX = 35 µA, TYP = 24 µA

Backup Battery

Back-up: MAX = 10 µA, TYP = 6.3 µA

Voltage detection:

Main battery: 2.5 V ±2.5 % or below

Forced OFF: 2.3 V ±2.5 % or below

Backup battery: 2.6 V ±2.5 % or below

— 4 —

BATTERY REPLACEMENT

1. Switch power off.

2. Slide the battery compartment cover in the direction indicated by the arrow.

3. Slide the battery switch in the direction indicated by the arrow in the illustration.

4. Remove the main battery holder.

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

• Make sure that the positive (+) and negative (–) ends of the

batteries are facing correctly.

6. Replace the main battery holder, and slide the battery switch in the direction

indicated by the arrow in the illustration.

7. Replace the battery compartment cover.

8. Turn on power.

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

main batteries.

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

REPLACING THE BACK-UP BATTERY

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

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

• Be sure to replace the back-up battery at least once 2 years. Otherwise, you run the risk of losing data

stored in memory.

1. Switch power OFF.

2. Slide the battery compartment cover in the direction indicated by the arrow.

3. Remove the screws that hold the back-up battery holder in place, and remove

the holder.

— 5 —

4. Remove the old battery and replace it with new one, making sure that the positive (+) side of the new battery

is facing up (so you can see it).

5. Replace the back-up battery holder and secure it by tightening its screw.

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

6. Replace the battery compartment cover.

RESET OPERATION

Youcan use either SECRET RESETorALLRESET to initialize the NX Unit.ALLRESETdeletes all data stored

in memory, while SECRET RESET deletes only the data stored in the secret drawer.

To perform ALL RESET

1. Switch power ON.

2. Open the battery compartment cover.

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

• At this time, the touch panel screen appears.

4. Tap the tip of the pencil icon as each one appears.

• When you tap the fourth pencil icon, the RESET screen appears.

Warning!

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

data before you continue!

5. Tap ALL RESET.

Note

• The message “ALL RESET? OK/ESC” always appears in English, regardless of the system language

setting.

6. Tap OK to reset the memory and delete all data or ESC to abort the reset operation without deleting

anything.

• After you tap OK, the system language screen appears.

7. Select the system language by tapping on the language you want to use, and then tap OK.

• After you select the system language, the Home Time screen appears.

8. Check the Home Time setting and make any changes that you want.

RESET button

— 6 —

Following the all reset operation, the NX Unit settings are initialized as noted below.

Home Time: Washington, D.C.

JAN/1/1996 MON

12:00 AM

12-hour format

World Time: New York

Daily Alarm: 12:00 PM

Sound: Schedule alarm, Reminder alarm and To Do alarm — ON

Daily alarm — OFF

Key input tone — ON

Input mode: Overwrite

TO SAVE THE DATA TO ANOTHER UNIT

NX-4000/6000 can transfer customer's data to another NX-4000/6000 with memory protection only when

replacing the LCD or the outer case.

How to transfer the data

1) Make sure that the power of both units is switched off.

2) Remove the covers from the data communications jacks on the two NX units.

3) Connect the two units using the SB-62 cable as shown in the figure below.

4) Turn the power switch of slave units on.

5) Reset the slave unit.

6) The slave unit must be set the date of Feb. 3rd, 1901 into the memory under the calculator mode.

Operation : ON AC 1 DATE 2 DATE 3 DATE M+

If you don't set the date, the "PASSWORD" isn't transferred to the slave unit.

7) Check the hardware parameters, and if the both units have another condition, reset as follows;

Operation : MENU FUNC DATA COM. SET UP PAR. NONE 7 9600 OK

SB-62 cable

PARITY EVEN ODD NONE

BIT LENGT 78

BPS 4800 / 9600

//////////// SET UP PAR. ////////////

— 7 —

RECEIVE OK!

TO STOP

PRESS [ ESC ]

DATA

RECEIVE OK!

TO STOP

PRESS [ ESC ]

DATA

8) Set up the slave unit.

Operation : MENU FUNC DATA COM. RECEIVE

OK ESC

If you can not succeed to transfer the data, press ESC key on both unit and try to transfer the data again

according to the above procedure.

9) Set up the customer's unit.

• Turn the power switch off.

• Press the RESET button with a thin, pointed object while shorting the following pad.

Note: Be careful not to reset the customer's unit. If “DIGITIZER” is displayed, turn the power switch off

immediately, and try again.

10) Start the data communication (slave unit).

Operation : OK

BOTTOM VIEW

Short the pad

Enlarge

RECEIVING

ITEMS 00001

SEND ALL DATA ?

OK ESC

— 8 —

BLOCK DIAGRAM

TAB LSI

uPD3062W

CPU

HD62119A03

Forced off 2.3V

Main battery

Low battery 2.5V

Back uo battery

Low battery 2.6V

Detector : IC7

Detector : IC6

Detector : IC8

Communication Jac

AD converter

TC35093

TC74LCX240

TXR

TXL

TYU

TYD Touch PanelLCD

ROM

MB834000CPF-G-4EP

RAM

CXK581000AM

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