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3) Feed the paper out of the printer by pressing the LF switch or p ull it out from the paper exit. 4) Install a new paper roll. (Refer to section 6.4 (1) Installing the paper.) 5) When the line switch is pressed again, the printer enters select (on line) status and printing may be resumed once again. 6.5 Self Print Function Your printer has a built in self print function for the purpose of checking print operation without the need for any other external device. Procedures for Actuating the Self Print Function [1] Be sure that a paper roll is properly loaded. [2] Confirm that the inked ribbon is properly installed and turn the power switch off. [3] Turn the power switch ON while pressing the LF switch, and release the LF switch after the self print operation has begun. In the above operation, the se print unction will stop automatically when completed. However, the self print function will not operate without paper when the printer is set for internal process of the paper end detection function. 6.6 Paper End Detector Your printer provides a paper end detection function which is able to detect when the paper is near the end. In addition. two different responses to this situation may be selected. [1] Issue the PE signal to an external unit(s). [2] Perform internal processing, whereby the buzzer is sounded and the print operation of your printer is interrupted. 18 CITIZEN CBM-710/720/730/750 User’s Manual 6.7 Installation of the CBM-750 1) Table-top use Put the AC cord into the "T" hole of the bottom base. Install the base stoppers, as shown in the figure 19. Fig. 19 2) Wall-mounting use Fix the hanger with 2 screws to the wall and hook the unit as shown in the figure 20. Fig. 20 19 CITIZEN CBM-710/720/730/750 User’s Manual 7. INPUT BUFFER BACK-UP FUNCTION 7.1 Input Buffer Back-up If the power is turned off, or there is a power failure during printing, the data in the input buffer will be retained. When the power comes back on, the power failure symbol (..... PD) will be printed in red, and then the data which was interrupted will be printed from the beginning of the line where the interruption occurred. Note: The input buffer back-up function may not operate properly if the related capacitor is not sufficiently charged. This may be the case if the printer has not been operated for a long period of time. After the printer power switch has been turned on for 10 minutes, the buffer back-up should be effective for approximately 100 hours or more. 7.2 Clearing the Input Buffer In case it is desired to delete the data in the input buffer, the power switch should be turned on while pressing the LINE switch. When deletion of the buffer is completed the buzzer will sound. Please be sure to continue pressing the LINE switch until that time. If the printer fails to work properly at the time the power switch turned on, please delete the input buffer as described above before inputting new data. 20 CITIZEN CBM-710/720/730/750 User’s Manual 8. PARALLEL INTERFACE 8.1 Specifications a) Data Input system: 8 bit parallel (DATA 1 -8). b) Control Signals: ACK, BUSY, STB, FAULT, PE, RESET c) Compatible Connectors: Printer side: 57LE-40360 (AMPHENOL or equivalent) Cable side: 57-30360 (AMPHENOL or equivalent) 8.2 Connector Pin Assignment Pin No. Signal Name Pin No Signal Name 1 STB 19 Twisted Pair GND 2 DATA 1 20 ­ 3 DATA 2 21 ­ 4 DATA 3 22 ­ 5 DATA 4 23 ­ 6 DATA 5 24 ­ 7 DATA 6 25 ­ 8 DATA 7 26 ­ 9 DATA 8 27 ­ 10 ACK 28 ­ 11 BUSY 29 ­ 12 PE 30 ­ 13 +5V Level 31 RESET 14 GND 32 FAULT 15 33 GND 16 GND 34 17 FRAME GND 35 18 + 5V DC 36 21 CITIZEN CBM-710/720/730/750 User’s Manual 8.3 Description of Input/Output Signals (1) Input/Output Signals a) Input Signals (To Printer) *DATA : 8 bit parallel signal. (Positive logic) *STB : A strobe signal for reading in 8 bit data. (Negative logic) *RESET : A signal which resets the entire printer. (Negative logic. 1 ms or more) b) Output Signals (From Printer) *ACK : This is a pulse signal for requesting 8 bit data, issued at the end of a BUSY signal. (Negative logic) *BUSY : This signal indicates that your printer is in a BUSY state. New data should be input when this signal is "LOW". (Positive logic) *FAULT : When your printer is in an alarm state, this signal is "LOW". At this time, all control circuits of your printer are interrupted. (Negative logic) *PE : When the paper is near its end, this signal is issued. (Positive logic) Note: An alarm condition occurs when the timing of the print head movement sensor is abnormal. c) Power Source *+5V DC : The same +5V output as that of the power source which actuates the control circuits. This should be less than 30 mA. *GND : The common circuit ground. *FRAME GND : Equivalent to "case ground". 22 CITIZEN CBM-710/720/730/750 User’s Manual (2) Electrical Characteristics a) Input Signal Level All input signals are TTL level. "HIGH" level ................ 2.0V Min. "LOW" level.................. 0.8V Max. b) Output Signal Level "HIGH" level ...............

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