hardware

Question

Answer

What does a dot matrix printer's ribbon gradually lose with use?

Ink

What indicates a dot matrix printer's ribbon needs replacement?

Printed output becomes lighter and harder to read

How is the ribbon housed for easy replacement?

In a modular cartridge

How long does ribbon replacement typically take?

Less than a minute

What are the steps to replace a ribbon cartridge?

Remove the old cartridge by pulling it out

Are tools usually required to replace the ribbon?

No

What is the print head?

A mechanical component with tiny pins that strike the ribbon to create text

Why might a print head need replacement?

Its pins can wear out or stop working

What safety precaution applies to the print head?

It can become hot during use

What does the back of the print head include to manage heat?

A heat sink

How does print head replacement vary by model?

Some require unscrewing it

What is a best practice when replacing the print head?

Replace the ribbon cartridge at the same time for optimal print quality

What type of paper do dot matrix printers use?

Continuous-feed paper with tractor feed holes on both sides

What must align properly when loading continuous-feed paper?

The tractor feed holes with the printer's sprockets

What should be verified for pre-printed forms?

Precise alignment to avoid misprints

What should be avoided in the paper path?

Obstructions

What should be ensured about paper movement?

That it can move freely both into and out of the printer

Question

Answer

What type of printer is a dot matrix printer?

An impact printer

How does a dot matrix printer create output?

Pins press against an ink ribbon

Why are dot matrix printers ideal for carbon copies or multi-part forms?

Due to the physical impact of the pins

What is an advantage of dot matrix printers regarding cost?

Low cost per page

What is a downside of dot matrix printer output quality?

Low-resolution output

Why are dot matrix printers impractical for quiet settings?

They operate noisily

How does the print head move to create output?

Back and forth across the page

What does the print head contain to transfer ink?

A matrix of small pins that strike the ribbon

What does the print head use to dissipate heat?

A heat sink

How does printing progress across the page?

One line at a time; the paper advances after each pass

What is the printer ribbon?

A single

How does the ribbon facilitate printing?

It enables ink transfer as the print head moves back and forth across it

How is the ribbon structured?

As an unending loop

Are ribbon cartridges universal across printers?

No

What mechanism pulls paper through a dot matrix printer?

Tractor feed

What are tractor feed holes?

Holes on the left and right sides of the paper that align with the printer's feed mechanism

What can cause paper jams in a dot matrix printer?

Misalignment of the tractor feed holes

What is continuous feed paper?

Long

Question

Answer

What are thermal printers commonly used for?

Printing receipts and shipping labels in retail and logistics

How do thermal printers create output?

By applying heat to thermal paper

Do thermal printers require ink or toner?

No

What is a notable characteristic of thermal printer operation?

They are quiet

What spans the width of the printing area in a thermal printer?

A heating element

How is the thermal paper moved through the printer?

By a feed roller

How does the heating element create text or images?

By selectively applying heat to specific areas

Does the heating element move or stay stationary?

It is typically stationary while the paper moves past it

What kind of paper do thermal printers require?

Thermochromic (thermal) paper with a special chemical coating

How does thermal paper's coating react to heat?

It changes color

How does thermal paper feel compared to standard paper?

Glossy

Can regular paper be used in a thermal printer?

No

What is an advantage of thermal printers regarding supplies?

No ink or toner required

What is an advantage of thermal printers regarding construction?

Simple construction with fewer moving parts

What is an advantage of thermal printers regarding speed?

Fast printing speeds

What is an advantage of thermal printers regarding noise?

Quiet operation

What can cause thermal print output to darken unexpectedly?

Exposure to additional heat sources like sunlight or heaters

What can happen if certain clear tapes are applied to thermal prints?

They can cause the thermal coating to turn white where applied

What can happen to thermal prints over time?

They may fade

What is a downside of thermal paper regarding cost?

It may be more expensive than standard paper

What does the feed roller do in a thermal printer?

Uses friction to pull the thermal paper through

What does the heating element do in a thermal printer?

A stationary component that applies heat to create the printed output

What does the paper roll holder do?

Secures the roll of thermal paper inside the printer

What does the cover and feed assembly do?

Protects internal components and ensures smooth paper movement

Question

Answer

What is one of the biggest maintenance challenges with inkjet printers?

Keeping the print head clean

What should you check for the best inkjet maintenance practices?

The manufacturer's guidelines

How often do many inkjet printers run an automated cleaning cycle?

Every 24 hours

What does the automated cleaning cycle remove?

Excess or dried ink from the print head

When might manual print head cleaning be necessary?

If the printer is used frequently or streaks appear on printed pages

Can the print head or cartridge be manually removed and cleaned?

Yes

What color model do inkjet printers use?

CMYK (Cyan

How can cartridge configurations vary?

Some combine CMY in one cartridge with separate black

How are ink cartridges typically replaced?

They pop out of their holder and new ones snap into place

What happens automatically after cartridge replacement?

The printer runs an automated calibration to align colors

Why is recycling used ink cartridges recommended?

Due to their plastic construction

What does printer calibration ensure?

Colors align correctly on printed output

When is calibration typically performed?

Automatically after cartridge replacement

What can fine-tuning calibration improve?

Print sharpness and color accuracy

What do calibration pages typically include?

CMYK color samples and alignment marks

Why are paper jams common in inkjet printers?

Due to frequent paper use

How does paper path accessibility vary between printers?

Some allow easy access by opening the cover

What should you do after clearing a paper jam?

Inspect the paper path for remaining fragments and test print to confirm normal operation

Question

Answer

What should you always do before working inside a computer?

Disconnect from any power source

What can store power inside a computer even after disconnection?

Capacitors

What should be avoided regarding a building's electrical system?

Connecting yourself to it

What does a power supply unit (PSU) do?

Converts AC power from wall outlets into DC power for computer components

What type of power do wall outlets provide?

AC (alternating current)

What type of power do motherboards and components require?

DC (direct current)

What DC voltages does a PSU typically output?

3.3V

What AC voltage is used in the US/Canada?

120V

What AC voltage is used in Europe?

230V

What does Ampere measure?

The flow of electrons (current) past a point per second

What does Voltage measure?

Electrical "pressure"

What does Wattage measure?

Real power use

What is the formula for calculating Wattage?

Volts multiplied by Amps equals Watts

What characterizes AC (Alternating Current)?

It constantly reverses direction

What characterizes DC (Direct Current)?

It flows in one direction with constant voltage

What AC frequency is used in the US?

60Hz

What AC frequency is used in Europe?

50Hz

What can happen if the wrong voltage setting is used on a PSU?

Catastrophic failure