Casio SF-4300R Guía de solución de problemas

(with price)

SF-4300R(LX-546)

OCT. 1994

SF-4300R

CONTENTS

1. SCHEMATIC DIAGRAM.................................................................................................... 1

1-1. MAIN PCB.................................................................................................................. 1

1-2. KEY MATRIX ............................................................................................................. 2

2. SPECIFICATIONS ............................................................................................................. 3

3. TO REPLACE THE BATTERIES....................................................................................... 5

4. DATA TRANSFER............................................................................................................. 6

5. OPERATION REFERENCE............................................................................................. 10

5-1. RESET OPERATION ............................................................................................... 10

5-2. TO ADJUST THE DISPLAY CONTRAST ............................................................... 11

5-3. TO CHECK THE MEMORY STATUS ...................................................................... 11

5-4. THE SOUND MENU................................................................................................. 11

6. LSI, IC (Pin function) ...................................................................................................... 12

6-1. CPU .......................................................................................................................... 12

6-2. RAM:MB84256A-70/10LL (LSI3), ROM:µPD23C1001EAGW-K81 (LSI4) ............. 13

6-3. VOLTAGE REGULATOR:S-81253SGUP (REG1) .................................................. 14

6-4. VOLTAGE DETECTOR:S-80752AN (DET1)........................................................... 14

7. TROUBLESHOOTING..................................................................................................... 15

8. HARD CHECK ................................................................................................................. 18

9. ASSEMBLY VIEW ........................................................................................................... 23

10. PARTS LIST .................................................................................................................... 25

— 1 —

1. SCHEMATIC DIAGRAM

1-1. MAIN PCB

— 2 —

1-2. KEY MATRIX

— 3 —

2. SPECIFICATIONS

Main Modes:

Telephone Directory, Memo, Schedule Keeper, Reminder, Calendar, Home Time, World Time and

Calculator.

Data storage:

Storage and recall of telephone, memo, schedule, reminder data; calendar display; secret area; editing;

memory status display.

Clock:

World time; reminder alarm; schedule alarm; daily alarm; accuracy under normal temperatures: ±3

seconds average.

Calculation:

10-digit arithmetic calculations; arithmetic constants (+, –, ×, ÷); independent memory; percentages;

square roots; 20-digit approximations; date calculations; other mixed calculations.

General:

Display element: 16-column ×4-line LCD

Memory capacity: 32 KB (28579 bytes)

Main component: LSI (The LX-546AQ is with an outside ROM, LSI4.)

Power supply: 2 lithium batteries (CR2032)

Power consumption: 0.05W

Battery life:

Approximately 400 hours continuous operation in Telephone Directory

Approximately 350 hours repeating one minute of input and 10 minutes of display in Telephone

Directory

Approximately 12 months for memory back up

Auto power off: Approximately 6 minutes after last key operation

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

Dimensions:

Unfolded: 9.6H ×122W ×158.5Dmm (3/8"H ×4 3/4"W ×6 1/4"D)

Folded: 12.4H ×122W ×81.5Dmm (1/2"H ×4 3/4"W ×3 1/4"D)

Weight: 89g (3.1 oz)

Current consumption:

Storage Capacity:

The 32K bytes memory capacity includes a 28579 bytes user area. The following shows examples

of what this means for the storage of data in each mode.

Telephone Directory:

Approximately 1360, under the following conditions: 8-character name

10-character telephone number

Approximately 680, under the following conditions: 8-character name

10-character telephone number

20-character address

Memo:Approximately 1290, 20-character memos

Power switch TYP. [µA] MAX [µA]

OFF — 20

ON — 550

— 4 —

Schedule Keeper:

Approximately 890, under the following conditions:

1 item per day, 20 characters per item

30 days per month

Starting time specified, alarm time set

Approximately 1020, under the following conditions:

1 item per day, 20 characters per item

30 days per month

Starting time specified, no alarm time

Reminder:

Approximately 1680, under the following conditions: 10 characters per item

Alarm time set

Approximately 1900, under the following conditions: 10 characters per item

No alarm time

— 5 —

3. TO REPLACE THE BATTERIES

1) Loosen the screw on the back of the SF-4300B that

holds the battery compartment cover in place, and

remove the cover.

2) Loosen the screw that secures one of the two battery

holders in place and remove the battery holder.

Caution

Be sure to remove only one battery at a time.

Otherwise, you will lose all data stored in memory.

3) Replace the old battery with a new one, making sure

that the positive (+) side of the new battery is facing up

(so you can see it).

4) Replace the battery holder and secure it by tightening its screw.

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

5) Repeat steps 2) through 4) for another battery.

• Be sure to replace all two batteries. Never mix old batteries with new ones, and be sure to use

CR2032 lithium batteries only.

6) After you replace all two batteries, replace the battery compartment cover and secure it by tightening

its screw.

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

Screw

RESET

— 6 —

2) Turn on the power switch of each machine.

3) The slavemachinemustbe setthe date of Feb. 3rd, 1901 into the memory under thecalculator mode.

Operation: 1. Press

2. Select "CAL" mode or press 6.

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

4. DATA TRANSFER

SF-4300R can transfer customers data to other SF-4300R with memory protection only when replacing

the LCD or the outer case. How to transfer the data.

* Before connecting the cable (SB-60/62), be sure to reset the slave machine to clear all data.

1) Turn off the power switch and connect the two units using the cable (SB-60/62) as shown in the

drawing.

M SUN

1901/ 2/ 3

SB-60/62 accessory cable

ON MENU

TIME TIME TIME M+

DATE DATE DATE R

123

— 7 —

Setting up for Data Communications

The following procedures describe what you should do to set up for data communications between

two SF Units or between an SF Unit and a personal computer. In addition to hardware connections,

it details how to set up the communications parameters and how to set up the SF-4300R to receive

data. By following these instructions carefully, you can be ensured of successful communications

every time.

To connect two SF Units

1. Check to make sure that the power of the two SF Units is switched off.

2. Remove the covers from the connectors on the two SF Units.

3. Connect the two SF Units using the optional SB-60/62 cable. You can also connect them using

an SB-60/62 cable.

Important

Be sure to replace the connector covers on the SF Units when you are not performing data

communications.

4) Check the hardware parameters.

1. Select "TEL" mode or press 1under MENU screen.

2. Press FUNC twice to display the second function menu.

• You can perform the above operation while the initial screen of the Memo Mode, Schedule

Keeper, Calendar, or Reminder is displayed also.

3. Press 4 to select DATA COMM.

4. Press 3 to select SET UP.

*If the password isn't

registered in the SF unit,

display shows Xinstead

of "1".

✻✻ SET UP PAR. ✻✻✻

PARITY E O N

BIT LENGTH 78

BPS 4800 9600

1* TO SECRET AREA

2 ALL DELETE

3 LABEL EDIT

4 DATA COMM

1 SEND

2 RECEIVE

3 SET UP PAR.

CAPS

•Nis blinking.

CAPS

FUNC FUNC

— 8 —

*If the password isn't

registered in the SF unit,

display shows X instead

of "1".

5. If the units have another condition, reset as above.

• To change the parameters

1. Use the and — cursor keys to change the selected parameter on the display.

2. Use the and cursor keys to change the high-lighted setting of the currently selected

parameter.

3. Press SET to store them in memory.

5) Set up the slave machine

1. While an initial screen is displayed, press FUNC twice to display the second function menu.

• You can perform the above operation while the initial screen of the Memo Mode, Schedule

Keeper, Calendar, or Reminder is displayed also.

2. Press 4 to select DATA COMM.

3. Press 2 to select RECEIVE.

6) Set up the customer’s machine.

1. While an initial screen is displayed, press FUNC twice to display the second function menu.

• You can perform the above operation while the initial screen of the Memo Mode, Schedule

Keeper, Calendar, or Reminder is displayed also.

*If the password isn't

registered in the SF unit,

display shows X instead

of "1".

1* TO SECRET AREA

2 ALL DELETE

3 LABEL EDIT

4 DATA COMM

SET

1 SEND

2 RECEIVE

3 SET UP PAR.

1* TO SECRET AREA

2 ALL DELETE

3 LABEL EDIT

4 DATA COMM

DATA

RECEIVE OK

TO STOP

PRESS (ESC)

CAPS

FUNC FUNC

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