ELECTRONIC CASH REGISTER C O N T E N T SER-390 SERIESELECTRONIC CASH REGISTERManual1. Precaution Statements2. Product Specifications3. Installation and Operation4. Disassembly and Assembly5. Maintenance and Adjustment6. Reference Information7. Special Circuit Descriptions8. Troubleshooting9. Exploded Views and Parts List10. PCB Layout and Parts List11. Block diagram12. Wiring Diagram13. Schematic DiagramsSERVICESamsung ER-390 series service ManualSamsung ER-390 series service ManualSamsung ER-390 series service ManualSamsung ER-390 series service Manual