Chapter 20

Question 1

What are some of the hardware symptoms and causes. p987

Answer 1

Excessive Heat 
Noise
Odors and Smoke 
Status Light Indicators 
Alerts
Visible Damage

Question 2

Overclocking is what? p988

Answer 2

Overclocking is running the processor faster than it was designed to run .

Question 3

One way to ensure that dust and grime don’t find their way into your computer is to always leave the__________ in the empty slots on the back of your box. p988

Answer 3

Blanks

Question 4

what are Blanks? p988

Answer 4

Blanks are the pieces of metal or plastic that come with the case and cover the expansion slot openings. They are designed to keep dirt, dust, and other foreign matter from the inside of the computer.

Question 5

How does Creeping Chips happen? p989

Answer 5

After several hundred such cycles, some components can’t handle the stress and begin to move out of their sockets .

Question 6

Why is it important to never touch internal components when the case is off and the power is on? p989

Answer 6

cause it could result in a severe electrical shock to you and/or the components .

Question 7

If the computer doesn’t POST as it should, one way to determine the source of a problem is to listen for what? p991

Answer 7

A Beep code

Question 8

How can you minimize the risk Motherboard and CPU problems. p992

Answer 8

Handle a motherboard as little as possible, and keep it in an antistatic bag whenever it’s removed from the PC case.
Keep all liquids well away from the motherboard; water can cause a short circuit.
Wear an antistatic wrist strap when handling or touching a motherboard.

Question 9

Identifying I/O Port and Cable Problems p993

Answer 9

The cables are snugly connected.
The port has not been disabled in BIOS Setup.
The port has not been disabled in Device Manager in Windows.
No pins are broken or bent on the male end of the port or on the cable being plugged into it.

Question 10

(GPFs)stands for what? p993

Answer 10

general protection faults (GPFs)

Question 11

Identifying Hard Disk System Problems p997

Answer 11

The adapter (that is, the SATA, IDE, or SCSI interface) is bad.
The disk is bad.
The adapter and disk are connected incorrectly.

Question 12

What are some specific hard-drive-related issues, the likely culprits, and actions to take: p997

Answer 12

Loud clicking or scratching noises
Slow performance or read/write failures
Boot problems

Question 13

What are some of the common symptom and their cause of the monitor and video card. p1000

Answer 13

Booting into VGA mode 
No image on the screen 
Monitor that keeps shutting down 
Dead pixels or artifacts 
Incorrect colors 
Dim or flickering images 
Distorted images

Question 14

What are some the key concepts when working on laptops: p1002

Answer 14

Document and label screw and cable locations .
Have a clear organization method for your parts and screws .
Refer to the manufacturer’s documentation .
Use the appropriate hand tools .

Question 15

Dim or flickering displays on laptops are usually caused by a____________ in the display panel .p1003

Answer 15

faulty backlight and inverter

Question 16

Another problem unique to laptop keyboards is the___ key. p1004

Answer 16

Fn key

Question 17

Dot-Matrix Printer Problems. p1007

Answer 17

Low Print Quality
Printout Jams inside the Printer
Stepper Motor Problems

Question 18

The parts on an inkjet can be divided into four categories: p1009

Answer 18

Print head/ink cartridge
Print head carriage, belt, and stepper motor
Paper-feed mechanism
Control, interface, and power circuitry

Question 19

Inkjet Printer Problems p1009

Answer 19

Print Quality 
Color Output Problems 
Paper Jams 
Paper-Feeding Problems 
Stepper Motor Problems 
Power Problems

Question 20

What are the six steps to the EP printing process.p1013

Answer 20

Cleaning
Charging
Writing
Developing
Transferring
Fusing

Question 21

A rubber blade scrapes any remaining toner off of the drum and a fluorescent lamp discharges any remaining charge on the photosensitive drum . p1013

Answer 21

Cleaning

Question 22

Gets a high voltage from the high voltage power supply (HVPS) . It uses the voltage to apply a strong uniform negative charge (–600VDC) to the photosensitive drum .p1013

Answer 22

Charging

Question 23

The laser scans the drum . Wherever it touches the drum, the charge is reduced from –600VDC to around –100VDC . The pattern formed on the drum will be the image that is printed .p1013

Answer 23

Writing

Question 24

Acquires a –600VDC charge from the HVPS and picks up toner, which gets the same –600VDC charge . Toner rolls by the photosensitive drum, the toner is attracted to the lesser-charged (–100VDC) areas on the photosensitive drum and sticks to it in those areas .p1013

Answer 24

Developing

Question 25

The charging corona wire or roller acquires a strong positive charge (+600VDC) and transfers it to the paper . As the photosensitive drum with ink on it rolls by, the ink is attracted to the paper .p1013

Answer 25

Transferring

Question 26

The 350˚ F fuser roller melts the toner paper and the rubberized pressure roller presses the melted toner into the paper, making the image permanent .p1013

Answer 26

Fusing

Question 27

What are the three major causes of blank pages on an Laser printer. p1017

Answer 27

TONER CARTRIDGE
TRANSFER CORONA ASSEMBLY
HIGH-VOLTAGE POWER SUPPLY (HVPS)

Question 28

What is Ghosting? p1021

Answer 28

Ghosting is what you have when you can see light images of previously printed pages on the current page. This is caused by one of two things: a broken cleaning blade or bad erasure lamps.

Question 29

What are the error codes for the laser printers. p1023-1024

Answer 29

00 ready
02 warming up
05 self test
11 paper out
13 paper jam
14 no ep cart
15 engine test
16 toner low
50 service
51 -52-55 error