Canon BJC 6000 - Color Inkjet Printer Service Manual

8) I/O signalsCompatible Mode:STROBE (Input)This signal asks the printer to read Data 1 to Data 8. This signal becomes validafter the BUSY signal goes "L" and the printer outputs ACKNLG. This signal isnormally "H," and the printer receives data after this signal goes "L." This signalmust be turned "H" before the printer can start printing.Data 1-8 (Input)The printer receives data in synchronization with STROBE. Each bit of data mustbe maintained for at least 0.5 μs after the rising edge of STROBE.ACKNLG (Output)This signal is returned in response to STROBE. The host computer can outputanother STROBE only after this signal is returned to the host computer. Thissignal is output regardless of STROBE when the printer is powered up or whenBUSY goes "L" in response to the INIT signal input from the host computer.BUSY (Output)The printer is BUSY when this signal is "H," and READY when this signal is "L."This signal goes "H" when the printer is receiving data or detects an error (paperout, paper jam, etc.).P.E. (Output)This signal goes "H" if the paper feeding operation of the printer fails to feed paper.As this signal goes "H," BUSY goes "H," and SELECT and ERROR go "L." Thissignal goes "L" when paper is set and fed. At this time both ERROR and SELECTgo "H." If the paper eject operation fails to eject paper (paper jam), this signal alsogoes "H," BUSY goes "H," SELECT goes "L," and ERROR goes "L." Simply removingjammed paper from the printer does not automatically reset this signal.SELECT (Output)The printer makes this signal "H" when it is READY. If an error occurs (paper out,paper jam, etc.), this signal goes "L."AUTO FEED XT (Input)When this signal is "L," the printer is set to the automatic line feed mode(CR=CR+LF). The printer reads this signal only at the time of power-up orinitialization in response to the INIT signal.INIT (Input)When this signal goes "L," the printer is forced to BUSY, and this signal's "L"-to-"H"edge resets the printer. The pulse width of this signal must be at least 50 μs asmeasured at the printer. After the initializing process, the printer moves itscarriage to the home position, enters the 10 cpi mode, and is set in the conditionspecified by the function settings.ERROR (Output)When the printer detects an error (paper out, paper jam, etc.), this signal goes "L"to notify the host computer that the printer is in error.Part 2: Product Specifications BJC-60002-12