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Lesson 11

Lesson 11. Core Hardware Fundamentals. Troubleshooting. Objectives. Describe the procedures for isolating failing components. Describe information-gathering techniques that can be used to get more information about a system failure. Describe common troubleshooting tools and their uses.

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Lesson 11

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  1. Lesson 11 Core Hardware Fundamentals Troubleshooting

  2. Objectives • Describe the procedures for isolating failing components. • Describe information-gathering techniques that can be used to get more information about a system failure. • Describe common troubleshooting tools and their uses. • Identify common error codes and suggested recovery procedures. • Identify common PC failures and suggested resolutions. • Identify common printer failures and suggested resolutions.

  3. Basic Troubleshooting Flow • Document the failure. • Collect all relevant information. • Duplicate the failure. • Check for obvious errors. • Isolate the failing component. • Repair or replace the failing component. • Document the resolution. • Inform the customer.

  4. Role of Information • Questioningusers • Open-ended questioning • Closed-ended questioning • Documentation • System inventory • Service history • Manufacturer documentation • Commercial press • User groups • Internet

  5. Screwdrivers Socket Hex drivers Pliers Wire cutters Tweezers Volt-ohmmeter Cleaning supplies Boot diskette Hardware diagnostics IC tool Miscellaneous items Troubleshooting Tools

  6. System checks System or device not plugged in System or device not turned on Cable not connected or loose Printer checks Not online Out of paper Out of toner or ink Document in print queue Document paused Quick Checks

  7. POST Error Beep Codes

  8. POST Numeric Error Codes Part 1

  9. POST Numeric Error Codes Part 2

  10. Common POST Errors

  11. Common System Failures • Motherboard (system board) • Power supply • Keyboard and mouse • Display monitor • Hard disk drive • CD-ROM/DVD • Memory • Modem • Adapters • Printers

  12. Internal Modem Checks • Properly seated • Resource assignment conflicts • Telephone line • Telephone cable

  13. External Modem Checks • Plugged in and receiving power • Turned on • Serial cable attached • Telephone line • Telephone cable

  14. Common Impact Printer Problems • Faint print • Streaking • Horizontal tearing • Missing print/white lines • Paper misfeeds

  15. Common Ink Jet Printer Problems • Poor print quality • Missing dots/white lines • Streaking • Bleeding • Paper misfeeds

  16. Common Laser Printer Problems • Streaked/dirty pages • Light/incomplete printing • Repeating mark or dots • Poor print quality • Memory overflow • Paper misfeed

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