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Computer Repair & Maintenance. Ainsley Smith. Tel: 0161 953 5995 Ex 3374 Ainsley_smith@mancat.ac.uk. Dismantle & Assemble a PC Today you will :-. Prepare a log of available hardware Prepare a risk assessment Draw a diagram of how ports & cables are connected
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Ainsley Smith Tel: 0161 953 5995 Ex 3374 Ainsley_smith@mancat.ac.uk
Dismantle & Assemble a PCToday you will :- • Prepare a log of available hardware • Prepare a risk assessment • Draw a diagram of how ports & cables are connected • Assemble a pc from a range of available parts • Learn how to store and pack ICT equipment • Perform safety checks • Test for PC functionality
Dismantle & Assemble a PCRisk Assessment & Safety factors Main Hazards ? • Electrical • Electrical shock or Burns - Students are not permitted to work alone in laboratories • Someone electrocuted and still attached to a supply is still `live'. • Current over 10mA passing through the body is painful; current in excess of 100mA passing through the body is lethal. • Death has been caused by as little as 40 Volts • Never dismantle the actual PSU in your PC. This unit contains potentially lethal mains voltages, even when it is disconnected from the supply. They are not user-repairable. If it fails, replace it with a new one.
Dismantle & Assemble a PC Risk Assessment & Safety factors In practical terms the following points should be noted: - • Do not attempt to modify or service electrical equipment unless it is disconnected from the supply • Fuses of the correct rating must be fitted to all electrical equipment • Electrical switches have a live side even in the switched off position • The outer cover of any mains cable must always be securely held by the cable grips on the plug.
Dismantle & Assemble a PCRisk Assessment & Safety factors Main Hazards ? • Electrical • ESD – • Wear an anti-static wristband • If the PC is grounded, touching its frame will ground you • The average person can carry up to 25,000 volts of static charge at any given time • CPUs and memory chips of any kind are highly vulnerable to ESD • you may soon start to notice random memory errors, blue screens • Try not to open up computers on thick carpets Electrostatic Discharge
Dismantle & Assemble a PCRisk Assessment & Safety factors Main Hazards ? • Electrical • ESD – Electrostatic Discharge • Sharp Edges • Beware of sharp edges inside PC Cases and the small solder pins on boards. A harmless-looking case edge can be as sharp as a razor, and remove large chunks of flesh if accidentally nudged with a slipping hand.
Dismantle & Assemble a PCRisk Assessment & Safety factors Main Hazards ? • Electrical • ESD – Electrostatic Discharge • Sharp Edges • Manual Handling • PC devices/peripherals are generally very delicate in nature. Handle them with extreme care and always employ some method to disperse static electricity.
Dismantle & Assemble a PCRisk Assessment & Safety factors • Manual Handling • PC devices/peripherals are generally very delicate in nature. Handle them with extreme care and always employ some method to disperse static electricity. • Can I lift it? - Is it stable? - Are there any sharp edges? • Have I any injuries that could impede my lifting? • Is the floor untidy or too slippery?
Common Installation Problems • Damaged Parts • Wrong Parts • Software Issues • Interface cards Not Seated • Loose Connectors • Parts not connected correctly.
Handling of Components • Hard disk • Do not drop or Bang • Do not expose to water / liquid • Do not take apart • Expansion cards • Try not to touch the copper track • Try not to touch the components • Ram • Take ESD measures • Do nor force into slots • Do not bend the modules
