Casio SF-5300B

CONTENTS
1. SCHEMATIC DIAGRAM
1-1. MAIN PCB..................................................................................................................1
1-2. KEY MATRIX 1 ..........................................................................................................2
1-3. KEY MATRIX 2 ..........................................................................................................3
2. SPECIFICATIONS ............................................................................................................5
3. REPLACING THE BATTERIES ........................................................................................6
4. RESETTING THE UNIT ....................................................................................................7
5. SAVING DATA ..................................................................................................................8
6. LSI PIN FUNCTIONS
6-1. CPU:LSI1 .................................................................................................................12
6-2. RAM:LSI2 AND LSI3 (CXK58257) ..........................................................................13
6-3. VOLTAGE REGULATOR:REG1 (S-81253) ............................................................14
6-4. VOLTAGE DETECTOR:DET1 (RH5VL46CA) ........................................................14
7. TROUBLESHOOTING ....................................................................................................15
8. DIAGNOSTICS................................................................................................................18
9. ASSEMBLY VIEW ..........................................................................................................23
10. PARTS LIST....................................................................................................................25