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Re: The Compleat Idiot's Guide to the IBM Model 29 Keypunch

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  • Mike Loewen
    Jeff Jonas quite correctly pointed out that it is unnecessary to use the numeric key when using the multiple punch feature. The keyboard is automatically
    Message 1 of 3 , Jul 25, 2012
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      Jeff Jonas quite correctly pointed out that it is unnecessary to use
      the numeric key when using the multiple punch feature. The keyboard is
      automatically shifted to numeric operation when the MULT PCH is held down.
      Following is a revised guide.

      Mike Loewen mloewen@...
      Old Technology http://sturgeon.css.psu.edu/~mloewen/Oldtech/

      The Compleat Idiot's Guide to the IBM Model 29 Keypunch

      1. The power switch is located under the desk top, to the right of the chip
      box. Flip it up to turn on power. You should hear the motor running and
      gears turning.

      2. On the keyboard unit, locate the CLEAR switch (momentary toggle) on the
      upper right. Lift it up and release it. This initiates a clear cycle to
      flush any cards from the feed path and reset the machine.

      3. Load a stack of blank cards into the card hopper (top right), face forward
      and 9-edge down, in front of the spring-loaded pressure plate.

      4. Set the remaining toggle switches on the keyboard to the following
      positions (On is up, Off is down):

      AUTO SKIP DUP - Off
      PROG SEL - One
      AUTO FEED - Off
      PRINT - On
      LZ PRINT - Off

      5. On the keyboard, press the FEED key to bring a card down from the hopper,
      then the REG key to register the card at the punch station.

      6. Punch any desired characters. The card will move one column to the left
      after each punch. The NUMERIC key is equivalent to the Shift key, to
      punch the upper characters on the key tops. You may punch up to 80
      characters on a card.

      7. When you're done punching a card, press the REL key to release the card.
      You may now either toggle the CLEAR switch to send the card to the
      stacker, or press the REG, REL, REG keys to move it to the read station
      and then to the stacker.

      8. Some of the keys stick. If a key does stick, hold down the ERROR RESET
      key and gently try to pull the stuck key upward. Do NOT pull too hard
      on the key top, or you may break something. Also, the keyboard may lock
      if you press the A or Z key while the NUMERIC key is pressed, or under
      other error conditions. The ERROR RESET key should clear the lock.

      9. For automatic feeding, set the AUTO FEED switch to ON. Press the FEED
      key twice to bring two cards down from the hopper. There is no need to
      press the REG key, since the first card automatically registers when the
      second card comes down. After punching a card, press REL. The first
      card moves to the read station, the next card registers at the punch
      station and a new card comes down from the hopper. To move all cards out
      of the feed path into the stacker, use the CLEAR switch.

      10. If you wish to put multiple punches in a single column, first turn the
      PRINT switch off. FEED and REG a card as usual, then hold down the
      MULT PCH key, then press any number of numeric keys, ampersand or hyphen.
      Release the MULT PCH key when you're done with a column, and the card will
      advance to the next column. Repeat as desired. The numbers 0-9 will punch
      the corresponding row, while the ampersand (&) punches row 12 (top row) and
      the hyphen (-) punches row 11 (second row from the top).

      11. When you're finished with the punch, use the CLEAR switch to clear any
      remaining cards, then turn off the power. Replace any unused cards in the

      12. If a card jams in the punch station, be VERY careful in trying to remove
      it. Pull open the cover over the program drum mechanism and locate the
      Pressure Roll Release Lever immediately to the right of the column
      indicator. Push down on the lever and try to pull the jammed card out.
      It may be necessary to use the IBM 129 Card Removal Tool (card saw) to
      remove portions of the jammed card. Do NOT use the toothed edge on anything
      except the card.

      13. If we don't have a printed copy, it would be useful to print the relevant
      sections from the IBM 29 Card Punch Reference Manual and keep it near the

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