Casio SF4300A, SF-4600 Service Manual
(without price)
SF-4300A(LX-571AT)
SF-4600(LX-571ET/FT)
JAN. 1993
INDEX
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CONTENTS |
1. |
SCHEMATIC DIAGRAM .................................................................................................... |
1 |
2. |
SPECIFICATIONS ............................................................................................................. |
3 |
3. |
TO REPLACE THE BATTERIES ....................................................................................... |
4 |
4. |
DATA TRANSFER ............................................................................................................. |
5 |
5. |
BLOCK DIAGRAM ............................................................................................................ |
9 |
6. |
LSI, IC (Pin Function) ..................................................................................................... |
10 |
7. |
To FIX TAB ASS'Y ........................................................................................................... |
13 |
8. |
TROUBLE SHOOTING .................................................................................................... |
14 |
9. |
HARD CHECK ................................................................................................................. |
17 |
10. |
DATA TRANSFER CHECK ............................................................................................. |
22 |
11. |
PCB VIEW .................................................................................................................... |
.... 26 |
12. |
ASSEMBLY VIEW ........................................................................................................... |
27 |
13. |
PARTS LIST .................................................................................................................. |
.. 29 |
1.SCHEMATIC DIAGRAM
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; mark protection; 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
16-column × 4-line LCD
32 KB / SF-4300A, 64 KB / SF-4600 LSI
3 lithium batteries (CR2032)
0.05W
Approximately 200 hours continuous operation in Telephone Directory approximately; 150 hours repeating one minute of input and 10 minutes of display in Telephone Directory; approximately 12 months for memory back up
Test condition: 20°C
Auto power off: Approximately 6 minutes after last key operation
Operating temperature: 0°C ~ 40°C (32°F ~ 104°F)
Dimensions:
Unfolded: |
12.4H x 141W x 80.5Dmm (1/2"H x 5-5/8"W x 3-1/8"D) |
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Folded: |
8.9H x 141W x 157Dmm (3/8"H x 5-5/8"W x 6-1/4"D) |
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Weight: 110g (3.9 oz) |
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Current consumption: |
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Power switch |
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MIN. [μA] |
MAX [μA] |
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OFF |
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9.51 |
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ON |
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529 |
606 |
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ON |
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1,287 |
1,398 |
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(Operating) |
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— 3 —
3.TO REPLACE THE BATTERIES
1)Loosen the screw on the back of the SF-4300A / SF-4600 that holds the battery compartment cover in place, and remove the cover.
Screw
2)Loosen the screw that secures one of the three 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 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 three batteries. Never mix old batteries with new ones, and be sure to use CR2032 lithium batteries only.
6)After you replace all three batteries, replace the battery compartment cover and secure it by tightening its screw.
•Be careful that you do not over tighten the screw.
— 4 —
4.DATA TRANSFER
SF-4300A / SF-4600 can transfer customers data to other SF-4300A / SF-4600 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.
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: |
ON |
CAL |
TIME |
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TIME |
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TIME |
M+ |
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1 |
DATE |
2 |
DATE |
3 |
DATE |
R |
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M SUN
1901/ 2/ 3
If you don't set the date, the "PASSWORD" isn't transferred to the slave machine.
— 5 —
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-4300A / SF-4600 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.
1While an initial screen is displayed, press FUNC twice to display the second function menu.
FUNC 
FUNC
2ALL DELETE
3LABEL EDIT
4DATA COMM
CAPS
•You can perform the above operation while the initial screen of the Telephone Directory, Memo Mode, Schedule Keeper, Calendar, Reminder is displayed.
2 Press 4 to select DATA COMM.
4
1SEND
2RECEIVE
3SET UP
4FDD
CAPS
3 Press 3 to select SET UP.
3
SET UP
PARITY E O N
BIT LENGTH 7 8
BPS 2400 4800
CAPS
— 6 —
4If the units have another condition, reset as above.
• To change the parameters
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1. |
Use the |
and — cursor keys to change the selected parameter on the display. |
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2. |
Use the |
ÑandD |
cursor keys to change the high-lighted setting of the currently |
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selected parameter. |
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SET |
3. |
Press SET to store them in memory. |
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5)Set up the slave machine
1While an initial screen is displayed, press FUNC twice to display the second function menu.
FUNC 
FUNC
2ALL DELETE
3LABEL EDIT
4DATA COMM
CAPS
•You can perform the above operation while the initial screen of the Telephone Directory, Memo Mode, Schedule Keeper, Calendar, Reminder is displayed.
2 Press 4 to select DATA COMM.
4
1SEND
2RECEIVE
3SET UP
4FDD
CAPS
3 Press 2 to select RECEIVE.
2
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RECEIVE OK |
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DATA |
TO STOP |
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PRESS (ESC) |
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CAPS |
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6)Set up the customer’s machine.
1While an initial screen is displayed, press FUNC twice to display the second function menu.
FUNC 
FUNC
2ALL DELETE
3LABEL EDIT
4DATA COMM
CAPS
•You can perform the above operation while the initial screen of the Telephone Directory, Memo Mode, Schedule Keeper, Calendar, Reminder is displayed.
— 7 —
2 Press 4 to select DATA COMM.
4
1SEND
2RECEIVE
3SET UP
4FDD
CAPS
3 Press 1 to select SEND.
1
1ONE ITEM
2MODE DATA
3ALL DATA
-SEND -
CAPS
4 Press 3 to select ALL DATA.
3
SEND ALL DATA?
SET/ESC
CAPS
5Press SET to start the send operation or ESC to abort the operation without sending anything.
SET / ESC
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SENDING |
DATA |
TO STOP |
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PRESS (ESC) |
CAPS |
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•Data is send in the sequence: Telephone Directory, Memo Mode, Reminder Mode, Schedule Keeper, Calendar.
•To abort the send operation at any time, press ESC.
•If an error occurs during the send operation, the message “SEND ERROR!” appears on the display. Press ESC to clear the error message.
6After the send operation is complete, the display returns to the initial screen of the mode you were in when you started this procedure.
— 8 —
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