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Flashcards in Chapter 20 Deck (29):
1

What are some of the hardware symptoms and causes. p987

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

2

Overclocking is what? p988

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

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

Blanks

4

what are Blanks? p988

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.

5

How does Creeping Chips happen? p989

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

6

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

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

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

A Beep code

8

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

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.

9

Identifying I/O Port and Cable Problems p993

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.

10

(GPFs)stands for what? p993

general protection faults (GPFs)

11

Identifying Hard Disk System Problems p997

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

12

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

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

13

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

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

14

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

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 .

15

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

faulty backlight and inverter

16

Another problem unique to laptop keyboards is the___ key. p1004

Fn key

17

Dot-Matrix Printer Problems. p1007

Low Print Quality
Printout Jams inside the Printer
Stepper Motor Problems

18

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

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

19

Inkjet Printer Problems p1009

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

20

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

Cleaning
Charging
Writing
Developing
Transferring
Fusing

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

Cleaning

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

Charging

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

Writing

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

Developing

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

Transferring

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

Fusing

27

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

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

28

What is Ghosting? p1021

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.

29

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

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