COMPUTER HARDWARE REPAIR PDF
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Download free courses materials, tutorials training on computer repair and Description: This PDF includes aspects of the underlying hardware as well as how. models and troubleshooting. Level I: PC Hardware and Software Demonstrate an understanding of proper use of tools used in computer repair. 8. Define and. These course materials were developed for use in the PC Hardware, PC Repair, Repair and Maintenance of Personal. Computers, and Introduction to Local.
Be sure to have a container to keep the screws in so you have them when you want to put things back together.
Make sure you have the resource material, drivers or software that you may need. If possible, enter the CMOS setup and record the information available.
At least record the floppy and hard drive configuration and any settings that may be different from the default. You want to be careful not to remove the battery and lose these settings, but stuff happens. Disassembly is major surgery, do a full backup of the system. Programs that you have the original disks for can always be replaced, but any upgrades for those programs and any programs that have been downloaded from the Internet may or may not still be available.
Bookmarks, e-mail addresses, phone and fax numbers, dial-up connections, DNS settings and networking protocols can be a real pain to replace. Even the best technicians cannot guarantee your data, so back it up. Close all programs, shut down Windows, and turn off your computer. Then remove the cables from the back of the case. One other thing: you have to use a little common sense.
Don't necessarily follow this information to the letter, it's only meant to be a guide. If you think it would be easier to remove some expansion cards before removing the drive bay, then do it. If you can better access the data cables after the drive is out, then do it that way. I think you get the point.
Removing the Cover The standard way of removing tower cases used to be to undo screws on the back of the case, slide the cover back about an inch and lift it off. Manufacturers are beginning to come up with trickier and more intricate methods of assembling these cases all the time. If there is no manual, then a little time taken for careful inspection may be in order. Here are some things to remember: Don't Force Anything. If it has to be forced, it will probably break. If there are no screws on the back of the case for the cover, check the plastic faceplate on the front.
Some pry off to reveal screws or release levers remember, careful inspection.
If everything on the front has its own bezel around it including the LEDs then maybe the plastic front pops off or maybe the case slides off the front. If you notice a separation between the sides and the top, then they must come off separately.
My favorite ATX case allows you to remove two screws from the back, then slide the side panel to the rear an inch and remove it. The other side removes the same way. It's a good, solid, well built case. Make sure any screws removed are for the cover.
Computer Hardware & Maintenance.pdf
You don't want to unscrew the power supply by accident and have it fall inside your computer. That's a bad thing. After the case is removed, place it in a safe place, where it won't get knocked of a table, kicked or stepped on and bent. Removing Adapter Cards Again, documentation is very important.
Yes, that bit ISA card will probably work in any bit ISA slot, but there may be a reason it's in that particular one. Document the type of card and which slot it comes from. Check the card for any cables or wires that might be attached and decide if it would be easier to remove them before or after you remove the card.
Undo the screw that holds the card in place. Grab the card by its edges, front and back, and gently rock it lengthwise to release it. Do not wiggle it side to side as you can break the card, the slot, or the solder.
Sometimes it helps to grasp the inside corner of the card with one hand and place a finger from the other hand under the associated port out the back of the computer to pry up the one end of the card.
Once the card is removed, you may want to record any jumper settings you see, just in case one is accidentally dislodged. Try to store the card in an antistatic bag.
If you don't plan on replacing the card then a cover should be installed over the slot opening. Removing Drives Removing drives is not that difficult. They usually have a power connector and a data cable attached from the device to a controller card or a connector on the motherboard. CD-ROMs may have an analog cable connected to the sound card. The power will be attached using one of two connectors, a large Molex connector or a smaller Berg connector for the floppy drive. The Molex connector may need to be wiggled slightly from side to side while applying gentle pressure outwards.
The Berg connector may just pull straight out or it may have a small tab that has to be lifted with a tiny flat screwdriver.
The data cables need to be documented. Remember the pin one rule. Know where each one goes before you pull it out and record its orientation which side is the stripe on, where is pin 1?
Pull data cables gently and carefully. In other words, don't yank them off, and pull level and in the direction of the pins. Now you need to do a little more inspection, can the entire drive bay be removed? Does that particular drive come out the back of the bay or does it slide out the front before the bay is removed.
Free tutorials computer repair and maintenance - PDF
If a bay is removable, you may have to remove some screws or unclip a lever then slide the bay back and off. If the bay is not removable, there should be access ports on the other side of the case that allow for access to those screws there should be, I've seen some that you just about have to remove the motherboard to access these screws.
Now you can remove the screws and slide the drive out the back of the bay. If the drive slides out the front of the case, then remove the screws and gently slide it forward. Removing the Memory Modules Memory modules are one of the chips that can be damaged by as little as 30 volts. Be careful of ESD and handle them only by the edges.
It should now lift out. Put each SIMM in its own protective bag. Push the tabs down and away from the socket.
The DIMM should lift slightly. Now you can grab it by the edges and place it in a separate antistatic bag.
Removing the Power Supply Make sure it's unplugged. All power connectors should be removed, including the connection to the motherboard and any auxiliary fans. Watch the little plastic tabs on ATX connectors you'ld rather not break them.
AT power supplies have a two piece power connector that may be labeled P-8 and P Make note of the orientation. Bridge Management: Inspection, Maintenance, Assessment and Repair. Two-Stroke Engine Repair and Maintenance. Machinery component maintenance and repair, Volume 3. Practical PC , 6th Edition.
A Guide to Transformer Maintenance. PC Hardware: A Beginner's Guide. Industrial machinery repair: Playstation 2 Repair Guide. Automobile Mechanical and Electrical Systems: Automotive Technology: The course includes tutorials that is adjusted for beginner level users which make it easy to learn and actually quite fun and entertaining.
Learning has never been so simple and easy. The best part is that our list of computer courses is growing every day. We know that these useful tutorials are updated and upgraded all the time, so we are adding new courses and tutorials as soon as possible.
With this computer repair and maintenance tutorial you will master this important program and increase your chances for getting the job position that you have always wanted! Free tutorials computer repair and maintenance - PDF. Mobile Phone Repair and Maintenance. Basic Computer Maintenance. Introduction to Computer Design. Computer Basics for Kids. Computer Fundamentals.
This PDF includes aspects of the underlying hardware as well as how we represent information, and how we can program a computer at the lowest level. Computer Network. Computer basics.If everything on the front has its own bezel around it including the LEDs then maybe the plastic front pops off or maybe the case slides off the front.
Philosophy of Computer Science. Let Us C. But if it recognizes your video card, counts the memory and allows access to you CMOS setup program, then you know everything installed to that point is working.
It should now lift out. PC Repair and Maintenance: Watch the little plastic tabs on ATX connectors you'ld rather not break them.
Before Beginning You want to make sure you have what you need. Once again, you're not in a race.
Is pin-1 actually designated on the device the cable is attached to?
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