Casio CE-300 (EX-247) Service Manual
Also see for CE-300 (EX-247): Service manualMost important functions
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Contents
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CONTENTSPage1. SPECIFICATIONS ................................................................................................ 12. INITIALIZE (MAC) OPERATION .......................................................................... 13. BLOCK DIAGRAM3-1. PCB connection ......................................................................................... 23-2. Block diagram (circuit) .............................................................................. 34. CIRCUIT EXPLANATION4-1. Power supply circuit .................................................................................. 44-2. CPU (uPD78052GC-093-3B9) .................................................................... 54-3. Display controller (uPD16312GB-3B4) ..................................................... 74-4. Initialize IC (Reset circuit) ......................................................................... 84-5. Power down detection circuit (PWD) ....................................................... 84-6. Address latch circuit ................................................................................. 84-7. RAM / ROM bank selection circuit ............................................................ 94-8. Head drive circuit for printer................................................................... 104-9. Vpp sensor circuit .................................................................................... 114-10. Power supply circuit for display ............................................................. 115. DIAGNOSTIC5-1. To start the diagnostic program ............................................................. 125-2. Check item ................................................................................................ 125-3. Operation of each test ............................................................................. 125-4. To exit the diagnostic test ....................................................................... 176. ERROR CODE6-1. Operation error code ............................................................................... 186-2. System lock code..................................................................................... 197. IC DATA1. TC74HC00AP ............................................................................................ 202. TC74HC08AP ............................................................................................ 203. TC74HC138 ............................................................................................... 204. TC74HC367AP .......................................................................................... 215. TL431CLPB ............................................................................................... 216. TC74HC373AP .......................................................................................... 217. S-80745 / S-80719 ..................................................................................... 228. M5237L ...................................................................................................... 229. MAX232 ..................................................................................................... 228. PCB LAYOUT ..................................................................................................... 239. CIRCUIT DIAGRAMS ......................................................................................... 2510. PARTS LIST ....................................................................................................... 41 |
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