Casio SF-4300B - Introduction; SF-4300 B

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:
µPD43256G-101215LL (LSI3)........................................................................ 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