Casio CE-300 Service Manual
Also see for CE-300 (EX-247): Service manualMost important functions
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— 17 —3-8. RS232C port testInput “2” “0” “7” + “#2” key.Execute the RS232C loop back test continuously using loop back connector.In case an error happens, the machine issues an error receipt then stop this test.Test description: 1: Level check at DSR signal ( Low/High)2: Send the data (05Ah) from TxD and receive it at RxD terminal.To stop this test, turn the mode switch to “OFF” position.Loop back connection:TxD 2RxD 3DSR 6Normal End Error EndX: Error code0: Time over1: Over run error2: Framing error3: RXD line data error4: DSR line receive error5-4. To exit the diagnostic testTo escape the diagnostic test mode, execute “INITIALIZE (MAC) operation”.232C ER X232C OKwww.freeservicemanuals.info3/22/15Digitized in Heiloo, Holland. |
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