compaq evo notebook n1005 series User Manual
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2–14Maintenance and Service Guide Troubleshooting Flowchart 2.4 - No Power, Part 3 Continued from Flowchart 2.3, No Power, Part 2. Reseat AC adapter in computer and at power source. Internal or external AC adapter? Done Done Done Done Power on? Power on?Power on? Plug directly into AC outlet. Power LED on? Power outlet active?Try different outlet.Replace external AC adapter. Replace power cord. Y N Y Y Y Y N NN N External Internal Go to Flowchart 2.5, No Power, Part 4. 272638-001.book Page 14 Thursday, July 25, 2002 4:21 PM
Troubleshooting Maintenance and Service Guide2–15 Flowchart 2.5 - No Power, Part 4 Y N Continued from Flowchart 2.4, No Power, Part 3. Reseat loose components and boards and replace damaged items. Open computer. Loose or damaged parts? Y Close computer and retest. Power on? Done N Replace the following items (if applicable). Check computer operation after each replacement: 1. Internal DC-DC converter* 2. Internal AC adapter 3. Processor board* 4. System board* *Replace these items as a set to prevent shorting out among components. 272638-001.book Page 15 Thursday, July 25, 2002 4:21 PM
2–16Maintenance and Service Guide Troubleshooting Flowchart 2.6 - No Video, Part 1 A N Stand-alone or docking station? No video. Replace the following one at a time. Test after each replacement. 1. Cable between notebook and computer display (if applicable) 2. Inverter board (if applicable) 3. Display 4. System board Internal or external display*?Adjust brightness.Video OK? Done Docking station Internal Stand-alone External Adjust brightness. Video OK? Done Y Press lid switch to ensure operation. Video OK? Done Y N Video OK? DoneDone N Check for bent pins on cable. Tr y another display.Internal and external video OK?Replace system board. YYN N * To change from internal to external display, use the hotkey combination. Y Go to Flowchart 2.7, No Video, Part 2. 272638-001.book Page 16 Thursday, July 25, 2002 4:21 PM
Troubleshooting Maintenance and Service Guide2–17 Flowchart 2.7 - No Video, Part 2 Y N Continued from Flowchart 2.6, No Video, Part 1. Done Video OK? Adjust external monitor display.Adjust display brightness. Video OK?Video OK? Done Done Check that notebook is properly seated in docking station, for bent pins on cable, and for monitor connection.Go to “A” in Flowchart 2.6, No Video, Part 1.Check brightness of external monitor. Try another external monitor. Internal and external video OK? Go to Flowchart 2.8, Nonfunctioning Docking Station. YY Y N N N Remove notebook from docking station, if connected. 272638-001.book Page 17 Thursday, July 25, 2002 4:21 PM
2–18Maintenance and Service Guide Troubleshooting Flowchart 2.8 - Nonfunctioning Docking Station (if applicable) Y N Reseat power cord in docking station and power outlet. N Replace the following docking station components one at a time. Check computer operation after each replacement. 1. Power supply 2. I/O board 3. Backplane board 4. Switch box Check voltage setting on docking station. Reset monitor cable connector at docking station.Reinstall notebook into docking station. Docking station operating? Docking station operating? Remove notebook, reseat all internal parts, and replace any damaged items in docking station.DoneDone Y Nonfunctioning docking station. 272638-001.book Page 18 Thursday, July 25, 2002 4:21 PM
Troubleshooting Maintenance and Service Guide2–19 Flowchart 2.9 - No Operating System (OS) Loading No OS loading from hard drive, go to Flowchart 2.10, No OS Loading from Hard Drive, Part 1. Reseat power cord in docking station and power outlet. No OS loading.* * Before beginning troubleshooting, always check cable connections, cable ends, and drives for bent or damaged pins. No OS loading from CD- or DVD-ROM drive, go to Flowchart 2.14, No OS Loading from CD- or DVD-ROM Drive. No OS loading from diskette drive, go to Flowchart 2.13, No OS Loading from Diskette Drive. 272638-001.book Page 19 Thursday, July 25, 2002 4:21 PM
2–20Maintenance and Service Guide Troubleshooting Flowchart 2.10 - No OS Loading from Hard Drive, Part 1 Go to Flowchart 2.17, Nonfunctioning Device. Y Done N OS not loading from hard drive. Nonsystem disk message?Go to Flowchart 2.11, No OS Loading from Hard Drive, Part 2. Reseat external hard drive. OS loading? Done Boot from CD? Go to Flowchart 2.13, No OS Loading from Diskette Drive. Boot from hard drive? Boot from diskette? Change boot priority through the setup utility and reboot. Boot from hard drive? Y Y Y YY N N N N N Check the setup utility for correct booting order. 272638-001.book Page 20 Thursday, July 25, 2002 4:21 PM
Troubleshooting Maintenance and Service Guide2–21 Flowchart 2.11 - No OS Loading from Hard Drive, Part 2 Continued from Flowchart 2.10, No OS Loading from Hard Drive, Part 1. Reseat hard drive. Done CD or diskette in drive?1. Replace hard drive. 2. Replace system board. Go to Flowchart 2.13, No OS Loading from Diskette Drive. Load OS using Restore CD (if applicable). Format hard drive and bring to a bootable C: prompt.Create partition, then format hard drive to bootable C: prompt. Remove diskette and reboot. YN Boot from hard drive? Y N YN Hard drive accessible? YN Hard drive accessible?Done Run FDISK. Y N Hard drive partitioned? Hard drive formatted? YN YN Computer booted? Done Y N Go to Flowchart 2.12, No OS Loading from Hard Drive, Part 3.Go to Flowchart 2.12, No OS Loading from Hard Drive, Part 3. Boot from diskette drive? 272638-001.book Page 21 Thursday, July 25, 2002 4:21 PM
2–22Maintenance and Service Guide Troubleshooting Flowchart 2.12 - No OS Loading from Hard Drive, Part 3 Y System files on hard drive? Continued from Flowchart 2.11, No OS Loading from Hard Drive, Part 2. Clean virus. Done N Install OS and reboot. Virus on hard drive?OS loading from hard drive? Y NY N Y N Diagnostics on diskette?Replace hard drive. Run diagnostics and follow recommendations. Run SCANDISK and check for bad sectors. Can bad sectors be fixed?Replace hard drive. YN YN Fix bad sectors.Boot from hard drive?Replace hard drive. Done 272638-001.book Page 22 Thursday, July 25, 2002 4:21 PM
Troubleshooting Maintenance and Service Guide2–23 Flowchart 2.13 - No OS Loading from Diskette Drive Done Y N Reseat diskette drive. OS not loading from diskette drive. Done Y YY Y Y Y Y N N N NN NN OS loading? Nonsystem disk message?Bootable diskette in drive?Install bootable diskette and reboot computer. Check diskette for system files. Try different diskette. 1. Replace diskette drive. 2. Replace system board. Nonsystem disk error? OS loading? Boot from another device? Enable drive and cold boot computer. Diskette drive boot order? Change boot priority using the setup utility.Go to Flowchart 2.17, Nonfunctioning Device. Diskette drive enabled in the setup utility? Go to Flowchart 2.17, Nonfunctioning Device. Clear CMOS. Refer to Section 1.3, “Clearing a Password,” for instructions. 272638-001.book Page 23 Thursday, July 25, 2002 4:21 PM