Casio SF4600RS, SF-4900RS Service Manual

SF-4600RS(ZX-860AT) SF-4900RS(ZX-860ET)

JUN. 1995

(with price)

SF-4600RS

SF-4900RS

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:CXK58257AM (LSI2,LSI3) ............................................................................. 13

6-3. OPERATION PROGRAM ROM PIN DESCRIPTIONS (

6-4. RAM PIN DESCRIPTIONS (CXK581000AM).......................................................... 14

6-5. VOLTAGE REGULATOR:S-81253SGUP (REG1) .................................................. 14

6-6. VOLTAGE DETECTOR:RH5VL46CA (DET1)......................................................... 14

µPD23C1001)................... 13

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

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

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

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

1. SCHEMATIC DIAGRAMS

1-1. MAIN PCB

— 1 —

1-2. KEY MATRIX

— 2 —

2. SPECIFICATIONS

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: SF-4600RS: 64 KB (61282 bytes)

SF-4900RS: 128 KB (126818 bytes)

Main component: LSI Power supply: 2 lithium batteries (CR2032) Power consumption: 0.05W Battery life:

Approximately 350 hours continuous operation in Telephone Directory Approximately 300 hours repeating one minute of input and 10 minutes of display in Telephone Directory Approximately 12 months for memory backup

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

Unfolded: 10.6H × 141W × 159.5Dmm (3/8"H × 5 1/2"W × 6 1/4"D) Folded: 12.4H × 141W × 82Dmm (1/2"H × 5 1/2"W × 3 1/4"D)

Weight: 105 g (3.7 oz)

Current consumption:

Power switch TYP. [µA] MAX [µA]

OFF 11 —

ON 560 600

Storage Capacity:

The 64K(SF-4600RS)/128K(SF-4900RS) bytes memory capacity includes a 61282(SF-4600RS)/ 126818(SF-4900RS) bytes user area. The following shows examples of what this means for the storage of data in each mode.

Telephone Directory:

Approximately 2918(SF-4600RS)/6038(SF-4900RS), under the following conditions:

8-character name 10-character telephone number

— 3 —

Approximately 1459(SF-4600RS)/3019(SF-4900RS), under the following conditions:

Memo:

Approximately 2785(SF-4600RS)/5764(SF-4900RS), 20-character memos.

Schedule Keeper:

Approximately 1857(SF-4600RS)/3842(SF-4900RS), under the following conditions:

20 characters per item Starting time specified, alarm time set

Approximately 2188(SF-4600RS)/4529(SF-4900RS), under the following conditions:

20 characters per item Starting time specified, no alarm time

Reminder:

Approximately 3604(SF-4600RS)/7459(SF-4900RS), under the following conditions:

Approximately 4085(SF-4600RS)/8454(SF-4900RS), under the following conditions:

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

10 characters per item Alarm time set

10 characters per item No alarm time

— 4 —

3. TO REPLACE THE BATTERIES

1) Loosen the screw on the back of the unit that holds the

Screw

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.

RESET

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 sure careful that you do not over tighten the screw.

5) Repeat steps 2) through 4) for the other two batteries.

• 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.

— 5 —

4. DATA TRANSFER

SF-4600RS/4900RS can transfer customers data to other SF-4600RS/4900RS with memory protection only when replacing the LCD or the outer case.

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

How to transfer the data

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

SB-60/62 accessory cable

2) Turn on the power switch of each machine.

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

Operation: 1. Press

2. Select "CAL" mode or press 6.

M+

123

M SUN

1901/ 2/ 3

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

— 6 —

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-Units 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

1 under MENU screen.

2. Press twice to display the second function menu.

*If the password isn't

registered in the SF unit, display shows X instead of "1".

• 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.

•N is blinking.

— 7 —

+ 18 hidden pages