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HP Dot Matrix C293X Series Printers - Product Support Information

Introduction
This document provides basic information on printer setup and use for the HP 2932A, 2933A, and 2934A printers (called 293X for short) which are HP’s 12-pin dot matrix impact printers introduced in October 1983. The primary hosts were HP mainframes and terminals. On October 31, 1993, the HP 2934A, the last of the 293X printers, became the final printer in this series to be discontinued. The support life for the 293X printers ends November 1, 1998. This means that HP will no longer repair these printers or supply spare parts.
Manual ordering
To obtain a printed copy of the 2930 Series Printer Owner's Manual, call 661-257-5565 and request Part Number 02932-90001. The cost per manual will be US$27.00; this cost includes printing, shipping and handling.
Printer setup
These instructions are provided with the assumption that the printer has been in use and is not "out-of-the-box". There are detailed instructions, with graphics in the Owner's Manual.
  1. The first step before electrical power is connected to the printer is to insure that the voltage and fuse are set correctly for your area's voltage supply.
  2. The fuse box is located on the printer's rear panel (left side as viewed from the back.)
  3. Voltage setting - The voltage selector drum offers the options of 100, 120, 220, and 240 volt operation.
    1. Open the fuse box door with the key or a small bit screwdriver.
    2. Remove and rotate the voltage selector drum to the correct voltage setting.
    3. Install the drum in the fuse box so that the selected voltage setting is visible through the window in the door when it is closed. Do not rotate the drum after it is installed.
  4. Fuse Selection - The printer will accommodate two ratings of fuses, the 4 amp and the 3.15 amp. The 4 amp, 250v, 3AG style fuse is required for 100V and 120V operation. The 3.15 amp, 250V.5 X20mm European style fuses are required for 220V and 240V operation. Each fuse fits one fuse clip.
  5. The correct fuse for your printer depends on the voltage requirements for your area. Fuse ratings requirements are printed on the product-rating label on the back of the printer. Follow these steps to properly install the correct fuse.
    1. Select the appropriate fuse and fuse clip for your voltage setting.
    2. Put the selected fuse in the correct clip and slide the clip into the right-hand slot.
    3. Make sure that the arrow on the fuse clip points in the same direction as those on the fuse box door.
    4. Put the unused fuse clip in the left-hand slot.
    5. Close the door.
  6. The next step is to connect the Interface Cable between the host and the printer to the connector on the printer's rear panel (right side as viewed from the back). Each interface cable is supplied with a fastener to ensure a good connection between the cable and the printer.
  7. The Power cord should now be plugged into the power receptacle on the printer's real panel, (left side, as viewed from the back) then into the wall outlet. Do not turn the printer on until you have made sure that the voltage selector drum matches your area's voltage requirements.
  8. The On/Off Switch is located on the printer's rear panel (left side as viewed from the back). To turn the printer ON, rock the switch to LINE. Do not be alarmed! When the printer is turned ON, it will beep, the printhead will sweep across the track, and the indicator lights on the keypad will flash.
Ribbon installation
The owner's manual has illustrations for these steps:
  1. Unpack the ribbon.
  2. Turn on the printer and open the cover.
  3. If there is any slack in the ribbon, turn one of the green take-up knobs on the ribbon cartridge in the direction indicated by the arrows.
  4. Align the hole in the bottom-left of the cartridge with the ribbon motor shaft (left side as viewed from the front). Do not move the printhead.
  5. Turn the take-up knob in the direction of the arrows until the cartridge slips down onto the shaft.
  6. The ribbon may be twisted slightly with a portion of it resting face down on top of the printhead. This is normal. If the ribbon is twisted other than top to front, it will not load. The ribbon cartridge should be removed and reinstalled. Do not try to push the ribbon down into the ribbon path.
  7. Close the printer cover, and press the Reset key twice. The printhead will sweep across the track. (The printer will beep when the Reset key is pressed.) The ribbon will automatically load.
  8. Check the print quality daily. When the printer begins to lighten the ribbon should be changed.
      note:
    Because stopping the printer to change ribbons will cause loss of data waiting to be printed, (a function of the Reset Key), the condition of the ribbon should be checked before starting each printing job.
Printhead gap adjustment
The printhead gap adjustment knob is located inside of the printer, on the right hand side (as viewed from the front).
The printhead gap adjustment knob is used to lighten or darken print and to adjust the printhead so that the printer can accommodate up to six part forms. As the knob is turned the printhead moves close to, or further from, the printing surface. Thus, the numbers on the knob are used as relative indicators of form thickness: multi-part forms require a wider gap between the printhead and the printing surface (6), than does a single part form (1).
  1. To adjust the printhead gap:
    1. For one-part forms set the gap adjustment knob to the first dot (nearest 1).
    2. For six-part forms set the gap adjustment knob to the first dot (nearest 6).
    3. Because forms can vary in thickness, you may occasionally need to adjust the printhead gap a few stops.
Loading paper
This section will provide the basic steps for loading paper. More details along with illustrations are provided in section 1 of the Owner's Manual. Before loading paper, see the above Head Gap Adjustment. When the printer is first turned on, the printhead will sweep across the track. The PAPER OUT indicator light will blink (until paper is loaded), and the printer will beep for approximately 1 second. (The beeping is a paper-out warning.) In addition, the rollers on the 2933A and 2934A printers will turn several times.
  1. Turn on the printer and open the printer cover.
  2. Unlock the tractor feeds and open the tractor feed gates.
  3. Move the paper guide to the approximate middle of the paper that will be used.
  4. Engage the paper in the tractors and close the gates. Do not load paper past the top pin on the tractor feeds.
  5. Position the tractors so that the left edge of the paper lines up with the Paper Edge line on the print's base. Lock the left tractor feed in place.
  6. Adjust the right tractor to the right or left to put the proper tension on the paper. The paper should be taut enough that it will not wrinkle as the printhead moves across it. But not so taut that the paper tears around the tractor feed pins as the printhead strikes it. Lock the right tractor feed in place.
  7. Close the cover.
  8. Open or close the paper window as necessary for the paper path option that was selected.
  9. Press the PAGE (up arrow) key. The top paper edge will advance to the paper window.
  10. Press the ONLINE key.
Self test
  1. Turn the printer on.
  2. Press the TEST key once to perform the printer's internal self-test. "SELF TEST PASSED" will print if the self test is passed. (If the self test failed, "SELF TEST FAILED" will print).
  3. The printer will automatically advance the paper to display the test results.
  4. Use the printed test result to gauge density of the print. Adjust the printhead gap knob, as described earlier to lighten or darken the print as needed.
I/O configuration
Most printers have external switches which, when set, define a limited number of printer features and functions. On the 2930 series printers, a variety of features and functions are selected through SETTINGS, a mode entered by pressing just two keys on the printer's keypad. The process, with all the options, is too extensive to be covered in this document. Refer to Section 2 of the Owner's manual for detailed instructions that match the configuration needed for your use.
Paper jam
This section will provide a few checks to make to resolve a paper jam problem. For more detailed troubleshooting assistance, refer to section 5 of the Owner's Manual.
  1. The printhead gap may need adjusting. Turn the printhead gap adjustment knob toward 6.
  2. Check for obstructions in the paper path and remove.
  3. Is the paper window closed? Multi-part forms and cardstock must exit through the paper window at the top of the printer.
  4. Tractor feeds may not be locked down.
  5. Paper may not be taut between the tractor feeds.

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