In this chapter, a brief explanation is given of the methods for making adjustments. Follow the instructions when performing maintenance inspections or when replacing parts to correct malfunctions.
Adjusting the Print Head and Platen Gap Measuring the Print Head and Platen Gap See sections 2 and 3 for details on how to remove the [ 3 ] tear bar. Adjusting the Print Head and Platen To adjust the left side gap, remove the adjustment bushing [4] screw in the left side frame and move the adjustment bushing [4] up and down.
Page 7: Adjusting The Belt Tension 2. Adjusting the Belt Tension See sections 2 and 3 for details on how to remove the [ 3 ] [ 1 ] tear bar. Adjusting the Paper Feed Path Insert a thickness gauge [3] between the tear bar base [1] [ 3 ] and cutter guide [2] to measure the gap. The procedures are explained below. Set paper in the printer. Turn on the power while pressing the FEED switch. After the buzzer beeps twice, release the FEED switch.
Page 10 To adjust, select the adjustment pattern with the smallest amount of discrepancy in the dots in coming and going directions by looking at the print results.
To do so, count from the top line to the line of the desired pattern, and press the FEED switch for that number of times. Adjusting the Black Mark Sensor Check that the printer power is off. Unplug the power cord from the outlet. Turn the printer over as shown in the drawing vertical layout and remove the screw to remove the DIP switch cover on the bottom of the printer. Note the following precautions during disassembly and reassembly.
Disconnect the printer power cord plug from the wall outlet before servicing it. Assembly is the reverse of disassembly unless otherwise specified. Page Rear Cover Unit 1. Pull the open lever 2 toward yourself to open the rear cover. Page 14 3 With the same procedure on the other side of the front cover 1 , remove by widening the A portion. Page Tear Bar 3.
Tear Bar Turn the power off and unplug the power plug from the AC outlet. With the procedures of 2, remove the case unit. Ribbon Base Turn the power off and unplug the power plug from the AC outlet. Page Printer Mechanism 5. Printer Mechanism Turn the power off and unplug the power plug from the AC outlet.
Page Platen Arm Unit 7. With the procedures of 5, remove the printer mechanism. Page Pf Moter 9. Page Main Logic Board With the procedures of 9, remove the power unit. Page Maintenance 1.
Maintenance Cleaning 1 Removal of dirt Wipe off dirt with a soft cloth soaked in alcohol or benzine. Note: Do not use thinner, trichlene or ketone solvents because they may damage plastic parts.
Page Printer Assembly Printer Assembly Disassembly Drawing — 14 — Page Parts List Page Printer Mechanism Printer Mechanism Disassembly Drawing — 16 — Page Sub-Assembly Sub-Assembly Page Head Unit Page Block Diagram Block Diagram — 21 — Page Main Logic Board Main Logic Board CHIP 0. Page Sub-Board Sub-Board Circuit Diagram Page Serial Interface Board 25Pin Serial Interface Board 25 pin Circuit Diagram — 31 — Cleaning the Thermal Head Cleaning the Paper Holder Appendix A: Specifications General Specifications Auto Cutter Specifications Electrical Characteristics Environmental Requirements Black mark specifications Appendix B: Dip Switch Setting Parallel Interface Model Serial Interface Model USB Interface Model Ethernet Interface Model Connecting the peripheral drive cable Appendix C: Parallel Interface Appendix D: Serial Interface RSC Connector Cable Connections USB Interface Specifications Ethernet Interface Specifications Appendix G: Memory Switch Settings Features LED indicators to indicate printer status and switches to operate the printer.
Interface connector Peripheral drive connector. For connection of the AC adapter. Never unplug the AC adapter while the printer is on. Before actually unpacking the printer, you should take a few minutes to think about where you plan to use it.
Remember the following points when doing this. Choose a firm, level surface where the printer will not be exposed to vibration. The power outlet you plan to connect to for power should be nearby and unobstructed. Make sure that the printer is close enough to your host computer for you to connect the two. Make sure that the printer is well away from heaters and other sources of extreme heat.
Make sure that the printer is connected to a reliable power outlet. It should not be on the same electric circuit as copiers, refrigerators, or other appliances that cause power spikes. When consumable parts have run out, use those specified in the table below. Make sure that the AC adapter specified in the table is used. Use of consumable parts or AC adapter which are not specified in the table may result in damage to the printer, fire or electric shock. Width: Tail end handling: Do not use paste or glue to secure the roll paper or its core.
Depending on the type and thickness of the paper, it may be necessary to change the settings for printing darkness. Access the following URL for the information of the recommended paper.
Note that the interface cable is not provided. Please use a cable that meets specifications. Also make sure the power cable plug is disconnected from the AC outlet. Use scissors to cut off any excess. Affix the ferrite core onto the USB cable as shown in the illustration below and make sure to pass the cable through the cable support as shown in the illustration. Then, connect the other end of the cable to your computer. You can connect a peripheral unit to the printer using a modular plug.
The following describes how to install the ferrite core and make the actual connection. Note that this printer does not come with a modular plug or wire, so it is up to you to obtain one that suits your needs. Make sure that the printer is turned off and unplugged from the AC outlet and that the computer is turned off before making connections.
Do not connect a telephone line into the peripheral drive connector. Failure to observe this may result in damage to the printer. Also, for safety purposes, do not connect wiring to the external drive connector if there is a chance it may carry peripheral voltage.
Europe only. Take out the screw shown in the figure below, then fasten the ground wire terminal to the place where the screw was removed and tighten the screw. Note: Use only the standard AC adapter and power cable. When disconnecting the cable, take hold of the cable connector to pull it out. Releasing the lock makes it easy to disconnect the connector. Pulling the cable excessively could cause damage to the connector.
We recommend that you unplug the printer from the power outlet whenever you do not plan to use it for long periods. Because of this, you should locate the printer so that the power outlet it is plugged into is nearby and easy to access. Open the printer cover, then turn the power on while holding the FEED button. Each of the signals sent from the computer to the printer will be printed out in hexadecimal code.
This function allows you to check if a control code sent to the printer by the program being used is correct or not. The final line is not printed if its data is less than one full line. However, if the FEED button is pushed, the final line is printed.
To turn off the mode, it is necessary to turn off the printer completely. When using a paper roll with an While observing the direction of the roll, set the paper roll into the hollow, and pull on the leading edge of the paper toward you. Note 2: When using paper with a thickness which does not require the use of the tension bar m paper thickness m , remove the tension bar unit by removing the clips at both ends of the bar with a flat head screwdriver.
Then, lower the right and left adjustment levers by unhooking them with a flat head screwdriver first, then lowering them to the proper position. Then, change the setting for memory switch 4 to change the print width from 72 mm to 80 mm.
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