Maintenance Tools and Power Devices

This Chapter describes following different types of tools for troubleshooting and maintaining the Computer and Network systems: –

Hand tools:

  • Small nylon wire ties for “dressing” or organizing wires.
  • Foam swabs, or lint-free cotton swabs
  • Soldering iron and solder sucker.
  • ESD (Electrostatic Discharge) Protection

Test Equipment:

  1. Digital Multi-meter.

An instrument designed to measure electric current, voltage, and usually resistance, typically over several ranges of value.

  1. POST Probe Card.

probe card is an interface between an electronic test system and a semiconductor wafer. 


  1. Crimping Tool.

 A crimping tool is a tool designed to crimp or connect a connector to the end of a cable. For example, network cables.

  •  Punch down tool.

A punch down tool, also called a punch down tool or a krone tool (named after the KRONE LSA-PLUS connector), is a small hand tool used by telecommunication and network technicians

  • Network Cable Tester

A cable tester is an electronic device used to verify the electrical connections in a cable or other wired assembly.


  1. Contact Cleaners.

It is used to clean electronic device like CPU, LCD, Keyboard, Mouse etc.

  1. Silicone Lubricants.

Silicone grease is a water proof  grease made by combining a silicone oil with a thickener. Silicone Lubricant is commonly used for lubricating and preserving rubber parts.

Dist Air Blower:

Air blower is used to remove dust from the  from the component of computer like Motherboard, Power supply and other devices.

Diagnostics software:

It is used to clean computers software like

 SIW (Windows, free), Hiren’s Boot CD and Ultimate boot CD from Windows.

Hand Tools

The following list mentions some specific tools anyone should have if they intend to get inside their PC:

6mm nut driver

8mm nut driver

Small Phillips screwdriver

Small straight edge screwdriver

Medium Phillips screwdriver

Medium straight edge screwdriver

Chip extractor

Larger processors require a chip extractor if they are mounted in the older low insertion force (LIF) socket.


The tweezers and parts grabber can be used to hold any small screws or jumper blocks that are difficult to hold in your hand.

Description: tweezer49

Claw-type parts grabber

The parts grabber is especially useful when you drop a small part into the interior of a system; usually, you can remove the part without completely disassembling the system.

Parts Grabber

T10 and T15 Torx drivers

The Torx driver is a star-shaped driver that matches the special screws found in most Compaq systems and in many other systems as well.

Torx Driver

Needle-nose pliers

Pliers are useful for straightening pins on chips, applying or removing jumpers, crimping cables, or grabbing small parts.

Description: nose

Smooth File

You can use the file to smooth rough metal edges on cases and chassis and to trim the faceplates on disk drives for a perfect fit.

Description: smooth

Wire cutter or wire stripper

The wire cutter or stripper, obviously, is useful for making or repairing cables or wiring.

ESD Protection Tools

Another consideration for computer toolkit is an electrostatic discharge (ESD) protection kit. This kit consists of a wrist strap with a ground wire and an especially conductive mat with its own ground wire. Using a kit like this when working on a system helps ensure that you never accidentally damage any of the components with a static discharge. You also can get just the wrist strap or the antistatic mat separately. A wrist strap is shown in the picture.

 A typical ESD wrist strap clipped to a non-painted surface in the case chassis.


Soldering Iron

Soldering is the process of a making a sound electrical and mechanical joint between certain metals by joining them with a soft solder. This is a low temperature melting point alloy of lead and tin. The joint is heated to the correct temperature by soldering iron. Soldering irons are used to make some necessary repairs though most of the maintenance work involves replacing the entire failed components. Simple soldering skills can save a lot of money in these cases. A low-wattage soldering iron of about 25 watts may be used perform minor repairs like above. More than 30 watts generates too much heat and can damage the components on the board.   (See Pictures 3.1)


Digital Multi-meter

A multi-meter can be used for checking voltage signals at different points in a system, testing the output of the power supply, and checking for continuity in a circuit or cable. The DMM has a pair of wires called test leads or probes. The test leads make the connections so that you can take readings.  Depending on the meter’s setting, the probes measure electrical resistance, direct-current (DC) voltage, or alternating-current (AC) voltage. Each system-unit measurement setting has several ranges of operation. For example, DC voltage can be read in several scales, to a maximum of 200 milli-volts (mv), 2v, 20v, 200v, and 1,000v.

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