Casio SF-4400- User Manual

Page 2 - CONTENTS

CONTENTS 1. SCHEMATIC DIAGRAM .................................................................................................... 11-1. MAIN PCB .................................................................................................................. 11-2. KEY MATRIX .........................

Page 3 - SCHEMATIC DIAGRAM

— 1 — 1. SCHEMATIC DIAGRAM 1-1. MAIN PCB NOTE: 1. LSI4, R3, R11 are not mounted. 2. R1, R2 are not used.

Page 5 - SPECIFICATIONS; LSI; Operating temperature: 0; Power switch

— 3 — 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-di...

Page 7 - Screw; TO REPLACE THE BATTERIES; Replace the battery holder and secure it by tightening its screw.

— 5 — Screw RESET 3. TO REPLACE THE BATTERIES 1) Loosen the screw on the back of the SF-4400/4600B that holds the battery compartment cover in place,and remove the cover. 2) Loosen the screw that secures one of the two batteryholders in place and remove the battery holder. Caution:Be sure to remove ...

Page 8 - Turn on the power switch of each machine.; DATA TRANSFER; SUN

— 6 — 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. Press2. Select "CAL" mode or press 6 . 3. If you don't set the date, the "PASSWORD" isn't transferred to the slave m...

Page 10 - DATA

— 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 hig...

Page 12 - OPERATION REFERENCE; To reset the SF Unit's memory; operation without deleting anything.; RESET button

— 10 — 5. OPERATION REFERENCE 5-1. RESET OPERATION The following procedure erases all data stored in the memory of the SF Unit.Perform the following operation only when you want to delete all data and initialize the settingsof the SF Unit.Remember-you should always keep copies of important data by w...

Page 16 - OUT; Input voltage

— 14 — VSS VDD VDD VDD –V DET +V DET OUT GND V IN V REF R A R B 1 2 3 R I + – 1 2 3 VDD OUT VSS 6-3. VOLTAGE REGULATOR: S-81253SGUP (REG1) Output Voltage (Vout) : 5.3V ± 5% 6-4. VOLTAGE DETECTOR: S-80752AN (DET1) Detection Voltage(–V DET ) : 5.2V ± 2.5% [5.07V (MIN) ~ 5.33V (MAX)] Input voltage Outp...

Page 17 - TROUBLESHOOTING

— 15 — 7. TROUBLESHOOTING < No power on > Does display appear by pressingReset button? Does it sound by key enter? Do batteries make positive contact withthe battery springs? Adjust contrast Replace batteries Check other function Refer to <No/Erratic display> Adjust contact and clean bat...

Page 20 - HARD CHECK; SEARCH

— 18 — 8. HARD CHECK No. OPERATION DISPLAY NOTE Turn on while short the short pad(KEY61). No display All dots display Checker display Reverse checker display 1 2 3 5 6 7 TEST 2 MEMORY MENU 3 KEY4 BUZZER 1 DISP 5 I/F DISP 4 RVS. 1 WHITE 5 FRAME 2 BLACK 6 DOT 4 3 CHECK. 7 TIME Main menu Display check ...

Page 21 - ESC

— 19 — No. OPERATION DISPLAY NOTE FRAME C h e c k i f t i m e r i sworking. Key check 9 8 10 11 12 No display 13 Dots appear at 4 corners. TIME DISPLAY 00:00:00 14 • Check the key No. appears on thedisplay. • Check the key sounds. • To return to the menu mode, enterSEARCH . HOME/WORLD MENUOFF ON INS...

Page 23 - ESC ESC

— 21 — No. OPERATION DISPLAY NOTE 22 (After few seconds) MEMORY 3 WR24 READ2 1 WR1 5 DUMP 2 READ1 6 CHKSUM EXECUTING COMPLETE 32KB (64KB) 2 TEST 2 MEMORY MENU 3 KEY4 BUZZER 1 DISP 5 EXT ESC ESC 23 24 Check sound.If RAM has defect,error message willbe appered. Press "RESET" key. 26 25

Page 24 - ASSEMBLY VIEW

— 23 — 1 2 3 4 5 6 9 7 8 10 11 12 13 14 15 19 17 18 20 22 23 24 25 26 27 30 31 32 33 LSI 34 16 21 28 29 9. ASSEMBLY VIEW

Table of Contents:

Summary

Other Casio Models