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  • Question
  • During preventative maintenance on a dot matrix printer, do NOT lubricate:


  • Options
  • A. Platen assembly
  • B. Print head pulley
  • C. Print head pins
  • D. Paper advance gear bushings
  • E. None of the above

  • Correct Answer
  • Print head pins 


  • Computer Hardware problems


    Search Results


    • 1. In the Binary numbering system, a (1) represents a jumper being shorted and a (0) represents a jumper being open. On a three-bit jumper block on a SCSI drive, how would an ID of logical 3 be set?

    • Options
    • A. 100
    • B. 010
    • C. 011
    • D. . 101
    • E. None of the above
    • Discuss
    • 2. A dialog box with a bomb appears on a Macintosh screen. What type of problem has occurred?

    • Options
    • A. A RAM problem
    • B. A software problem
    • C. A ROM problem
    • D. An ADB problem
    • E. None of the above
    • Discuss
    • 3. One of the major components of a PC is the Central Processing Unit (CPU) which can be best described as:

    • Options
    • A. The device that sends the monitor signals telling it what to display
    • B. The area that regulates all of the system power usage
    • C. The area where ail the of the Basic input/output routines are stored
    • D. The area where all of the processing takes place
    • E. None of the above
    • Discuss
    • 4. COM1 is typically represented by which of the following?

    • Options
    • A. 15 pin port
    • B. 9 pin male port
    • C. 9 pin female port
    • D. 25 pin male port
    • E. None of the above
    • Discuss
    • 5. What is the modem hang up command?

    • Options
    • A. ATHU
    • B. ATH
    • C. ATZ
    • D. ATX
    • E. None of the above
    • Discuss
    • 6. What is the i/o address for com2?

    • Options
    • A. 2vb
    • B. 2f8
    • C. 8f8
    • D. 330
    • Discuss
    • 7. In laser technology, what happens during the transfer stage?

    • Options
    • A. Residual toner is transferred to the waste receptacle
    • B. The laser transfers the image from the drum to the paper.
    • C. The image is transferred from the drum to the paper
    • D. A negative charge is transferred to the surface of the drum
    • E. None of the above
    • Discuss
    • 8. The DC voltage on most circuit boards is:

    • Options
    • A. -12 volts
    • B. 0 volts
    • C. +5 volts
    • D. +12 volts
    • E. None of the above
    • Discuss
    • 9. If the voltage on pin 1 of the power supply is not in the range of _____ volts, the PC will not boot.

    • Options
    • A. 10 - 20
    • B. 1 - 5
    • C. 50 - 110
    • D. 15 - 25
    • E. 2.5 - 5
    • Discuss
    • 10. What IRQ is used for COM 2?

    • Options
    • A. 4
    • B. 3
    • C. 2
    • D. 1
    • E. None of the above
    • Discuss


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