User manual COMPAQ NC6110 - MAINTENANCE AND SERVICE GUIDE

Maintenance and Service Guide HP Compaq nx6110/nc6110 and nx6120/nc6120 Notebook PCs Document Part Number: 373146-001 February 2005 This guide is a troubleshooting reference used for maintaining and servicing the notebook. It provides comprehensive information on identifying notebook features, components, and spare parts; troubleshooting notebook problems; and performing notebook disassembly procedures. © Copyright 2005 Hewlett-Packard Development Company, L.P. Microsoft and Windows are U.S. registered trademarks of Microsoft Corporation. Intel, Pentium, and Celeron are trademarks or registered trademarks of Intel Corporation or its subsidiaries in the United States and other countries. Bluetooth is a trademark owned by its proprietor and used by Hewlett-Packard Company under license. The information contained herein is subject to change without notice. The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. HP shall not be liable for technical or editorial errors or omissions contained herein. Maintenance and Service Guide HP Compaq nx6110/nc6110 and nx6120/nc6120 Notebook PCs First Edition February 2005 Document Part Number: 373146-001 Contents 1 Product Description 1.1 1.2 1.3 1.4 1.5 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1­2 Resetting the Notebook . . . . . . . . . . . . . . . . . . . . . . . 1­4 Power Management. . . . . . . . . . . . . . . . . . . . . . . . . . 1­5 External Components . . . . . . . . . . . . . . . . . . . . . . . . 1­6 Design Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . 1­22 2 Troubleshooting 2.1 Computer Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2­1 2.2 Troubleshooting Flowcharts . . . . . . . . . . . . . . . . . . . 2­5 3 Illustrated Parts Catalog 3.1 3.2 3.3 3.4 3.5 3.6 3.7 Serial Number Location . . . . . . . . . . . . . . . . . . . . . . 3­1 Notebook Major Components . . . . . . . . . . . . . . . . . . 3­2 Miscellaneous Plastics Kit . . . . . . . . . . . . . . . . . . . 3­12 Miscellaneous Cable Kit . . . . . . . . . . . . . . . . . . . . . 3­13 Mass Storage Devices . . . . . . . . . . . . . . . . . . . . . . . 3­14 Miscellaneous (Not Illustrated). . . . . . . . . . . . . . . . 3­15 Sequential Part Number Listing . . . . . . . . . . . . . . . 3­18 4 Removal and Replacement Preliminaries 4.1 4.2 4.3 4.4 4.5 4.6 4.7 Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Service Considerations . . . . . . . . . . . . . . . . . . . . . . . Preventing Damage to Removable Drives . . . . . . . . Preventing Electrostatic Damage . . . . . . . . . . . . . . . Packaging and Transporting Precautions . . . . . . . . . Workstation Precautions . . . . . . . . . . . . . . . . . . . . . . Grounding Equipment and Methods . . . . . . . . . . . . . 4­1 4­2 4­3 4­4 4­5 4­6 4­6 iii Maintenance and Service Guide Contents 5 Removal and Replacement Procedures 5.1 Serial Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5­2 5.2 Disassembly Sequence Chart . . . . . . . . . . . . . . . . . . 5­3 5.3 Preparing the Notebook for Disassembly . . . . . . . . . 5­5 5.4 Notebook Feet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5­10 5.5 Bluetooth Board . . . . . . . . . . . . . . . . . . . . . . . . . . . 5­11 5.6 External Memory Module . . . . . . . . . . . . . . . . . . . . 5­12 5.7 Mini PCI Communications Card. . . . . . . . . . . . . . . 5­15 5.8 Optical Drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5­17 5.9 Keyboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5­19 5.10 Switch Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5­24 5.11 LED Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5­26 5.12 Fan. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5­28 5.13 Heat Sink. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5­29 5.14 Processor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5­31 5.15 Modem Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5­33 5.16 Internal Memory Module . . . . . . . . . . . . . . . . . . . 5­34 5.17 RTC Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5­36 5.18 Display Assembly . . . . . . . . . . . . . . . . . . . . . . . . . 5­37 5.19 Top Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5­40 5.20 Speaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5­45 5.21 Digital Media Board . . . . . . . . . . . . . . . . . . . . . . . 5­48 5.22 USB/Audio Board . . . . . . . . . . . . . . . . . . . . . . . . . 5­50 5.23 System Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5­52 5.24 Serial Connector Module . . . . . . . . . . . . . . . . . . . 5­55 6 Specifications A Connector Pin Assignments B Power Cord Set Requirements C Screw Listing Index iv Maintenance and Service Guide 1 Product Description The HP Compaq nx6110/nc6110 and nx6120/nc6120 Notebook PCs offer advanced modularity, Intel® Pentium® M and Celeron® processors, and extensive multimedia support. HP Compaq nx6110/nc6110 and nx6120/nc6120 Notebook PCs Maintenance and Service Guide 1­1 Product Description 1.1 Features The following processors are available, varying by notebook model: Intel Pentium M 2.13-, 2.00-, 1.86-, 1.73-, 1.60-, or 1.30-GHz processor, Intel Celeron 1.5- or 1.4-GHz The following displays are available, varying by notebook model: 15.0-inch, SXGA+WVA, TFT (1400 × 1050) with over 16.8 million colors 15.0-inch, XGA, TFT (1280 × 800) with over 16.8 million colors 14.1-inch, XGA, TFT (1280 × 800) with over 16.8 million colors 80-, 60-, 40-, or 30-GB high-capacity hard drive, varying by notebook model 256-MB DDR2 synchronous DRAM (SDRAM) at 400 and 533 MHz, expandable to 2.0 GB Microsoft® Windows® XP Home Edition or Windows XP Professional, varying by notebook model Full-size Windows keyboard with embedded numeric keypad TouchPad pointing device, including a dedicated vertical scroll region and a button that enables/disables TouchPad operation. Integrated 10 Base-T/100 Base-TX Ethernet local area network (LAN) network interface card (NIC) with RJ-45 jack Integrated high-speed 56K modem with RJ-11 jack Integrated wireless support for Mini PCI IEEE 802.11b or 802.11b/g WLAN device Support for one or two Type II PC Card slots, with support for both 32-bit (CardBus) and 16-bit PC Cards, varying by notebook model 1­2 Maintenance and Service Guide Product Description External 65-watt AC adapter with 3-wire power cord, varying by notebook model 6-cell Li-Ion battery pack Stereo speakers Volume up, volume mute, and volume down buttons (full-featured models only) are made throughout this Maintenance Numerous references "full-featured" and "defeatured" units. A and Service Guide to notebook model is considered to be full-featured if it has 4 Universal Serial Bus ports, 2 PC Card slots, and the following components: Volume control buttons Info Center button Infrared port 6-in-1 Digital Media Slot Serial port Parallel port S-Video-out jack Docking connector A notebook model is considered to be defeatured if it has only 2 Universal Serial Bus ports, 1 PC Card slot, and none of the components in the preceding list. Support for the following optical drives: DVD±RW and CD-RW Combo Drive DVD/CD-RW Combo Drive DVD-ROM drive CD-ROM drive Maintenance and Service Guide 1­3 Product Description Connectors: Audio-out (headphone) Audio-in (microphone) Universal Serial Bus (USB) v. 2.0 (4 ports on full-featured notebook models, 2 ports on defeatured notebook models) Power External monitor RJ-11 (modem) RJ-45 (network) IEEE 1394 Travel battery Infrared (full-featured models only) Digital Media Slot (full-featured models only) Parallel port (full-featured models only) S-Video-out (full-featured models only) Docking connector (full-featured models only) 1.2 Resetting the Notebook If the notebook you are servicing has an unknown password, follow these steps to clear the password. These steps also clear CMOS: 1. Prepare the notebook for disassembly (refer to Section 5.3, "Preparing the Notebook for Disassembly," for more information). 2. Remove the real-time clock (RTC) battery (refer to Section 5.17, "RTC Battery," for more information on removing and replacing the RTC battery). 1­4 Maintenance and Service Guide Product Description 3. Wait approximately 5 minutes. 4. Replace the RTC battery and reassemble the notebook. 5. Connect AC power to the notebook. Do not reinsert any battery packs at this time. 6. Turn on the notebook. All passwords and all CMOS settings have been cleared. 1.3 Power Management The notebook comes with power management features that extend battery operating time and conserve power. The notebook supports the following power management features: Standby Hibernation Setting customization by the user Hotkeys for setting the level of performance Battery calibration Lid switch standby/resume Power/standby button Advanced Configuration and Power Management (ACPM) compliance Maintenance and Service Guide 1­5 Product Description 1.4 External Components The external components on the front of the notebook are shown below and described in Table 1-1. Front Components Table 1-1 Front Components Item 1 Component Infrared port (full-featured models only) Stereo speakers (2) Display release latch Function Provides wireless communication between the notebook and an optional IrDA-compliant device. Produce stereo sound. Opens the notebook. 2 3 1­6 Maintenance and Service Guide Product Description Table 1-1 Front Components (Continued) Item 4 5 Component Wireless light Power/standby light Function On: an integrated wireless device has been enabled. Green: The notebook is on. Blinking green: The notebook is in standby mode. Off: The notebook is off or in hibernation. 6 Battery light Amber: A battery pack is charging. Green: A battery pack is close to full charge capacity. Blinking amber: A battery pack that is the only available power source has reached a low-battery condition. When the battery reaches a critical low-battery condition, the battery light begins blinking more quickly. Off: If the notebook is connected to an external power source, the light is turned off when all batteries in the notebook are fully charged. If the notebook is not connected to an external power source, the light is turned off until the battery reaches a low-battery condition. Blinking: The hard drive or optical drive is being accessed. Supports 6 optional digital memory card formats: SD (Secure Digital) Memory Card, MultiMediaCard, Memory Stick, Memory Stick Pro, SmartMedia, and xD-Picture Card. On: A digital memory card is being accessed. 7 Integrated Drive Electronics (IDE) drive light 6-in-1 Digital Media Slot (full-featured models only) 8 9 6-in-1 Digital Media Slot light (full-featured models only) Maintenance and Service Guide 1­7 Product Description The external components on the right side of the notebook are shown below and described in Table 1-2. Right-Side Components 1­8 Maintenance and Service Guide Product Description Table 1-2 Right-Side Components Item 1 Component Audio-out (headphone) jack Function Connect optional headphones or powered stereo speakers. Also connects the audio function of an audio/video device such as a television or VCR. Connects an optional monaural microphone. Connect USB 1.1- and 2.0-compliant devices to the notebook using a standard USB cable, or connect an optional External MultiBay II to the notebook. The MultiBay II must also be connected to an external power source. Supports an optical disc. The type of optical drive varies by model. Connects an optional serial device. 2 3 Audio-in (microphone) jack USB ports (2) (full-featured models only) 4 5 Optical drive Serial port (full-featured models only) Maintenance and Service Guide 1­9 Product Description The external components on the left side of the notebook are shown below and described in Table 1-3. Left-Side Components Table 1-3 Left-Side Components Item 1 Component USB ports (2) Function Connect USB 1.1- and 2.0-compliant devices to the notebook using a standard USB cable, or connect an optional External MultiBay II to the notebook. The MultiBay II must also be connected to an external power source. Connects an optional VGA external monitor or projector. 2 External monitor port 1­10 Maintenance and Service Guide Product Description Table 1-3 Left-Side Components (Continued) Item 3 Component Exhaust vent Function Provides airflow to cool internal components. Ä To prevent overheating, do not obstruct vents. Do not allow a hard surface, such as a printer, or a soft surface, such as pillows, thick rugs, or clothing, to block airflow. 4 5 6 RJ-11 (modem) jack RJ-45 (network) jack 1394 port Connects the modem cable. Connects an optional network cable. Connects an optional 1394a device such as a scanner, digital camera, or digital camcorder. Support an optional Type I, Type II, or Type III 32-bit (CardBus) or 16-bit PC Card. 7 PC Card slots (2 slots on full-featured models, 1 slot on defeatured models) PC Card eject buttons (2 buttons on full-featured models, 1 button on defeatured models) 8 Eject an optional PC Card from the PC Card slot. Maintenance and Service Guide 1­11 Product Description The external components on the rear panel of the notebook are shown below and described in Table 1-4. Rear Panel Components 1­12 Maintenance and Service Guide Product Description Table 1-4 Rear Panel Components Item 1 Component Security cable slot Function Attaches an optional security cable to the notebook. Ä 2 3 4 Battery bay Power connector Parallel port (full-featured models only) S-Video-out jack (full-featured models only) Security solutions are designed to act as deterrents. These deterrents may not prevent a product from being mishandled or stolen. Holds a battery pack. Connects an AC adapter or an optional automobile or aircraft adapter. Connects an optional parallel device, such as an external diskette drive or a printer. Connects an optional S-Video device, such as a television, VCR, camcorder, projector, or video capture card. 5 Maintenance and Service Guide 1­13 Product Description The standard keyboard components of the notebook are shown below and described in Table 1-5. Standard Keyboard Components 1­14 Maintenance and Service Guide Product Description Table 1-5 Standard Keyboard Components Item 1 Component f1 to f12 keys (12) Function Perform system and application tasks. When combined with the fn key, several keys and buttons perform additional tasks as hotkeys. Enables caps lock and turns on the caps lock light. Executes frequently used system functions when pressed in combination with a function key or the esc key. In Windows, displays the Windows Start menu. In Windows, displays a shortcut menu for items beneath the pointer. Moves the cursor around the screen. In Windows, can be used like the keys on an external numeric keypad. Enables numeric lock, turns on the embedded numeric keypad, and turns on the num lock light. 2 3 caps lock key fn key 4 5 6 7 8 Windows logo key Windows applications key Arrow keys Keypad keys (15) num lock key Maintenance and Service Guide 1­15 Product Description The notebook top components are shown below and described in Table 1-6. Top Components, Part 1 Table 1-6 Top Components, Part 1 Item 1 Component Power/standby button Function When the notebook is: Off, press to turn on the notebook. On, briefly press to initiate hibernation. In standby, briefly press to resume from standby. In hibernation, briefly press to restore from hibernation. If the system has stopped responding and Windows shutdown procedures cannot be used, press and hold for 5 seconds to turn off the notebook. 1­16 Maintenance and Service Guide Product Description Table 1-6 Top Components, Part 1 (Continued) Item 2 Component Display lid switch Function If the notebook is closed while on, turns off the display. If the notebook is opened while in standby, turns on the notebook (resumes from standby). Launches Info Center. 3 Info Center button (full-featured models only) Wireless button 4 Turns the wireless functionality on or off, but does not create a wireless connection. establish a wireless Towireless network mustconnection, a already be set up. 5 6 7 Presentation mode button Caps lock light Num lock light Turns on Presentation mode. On: caps lock is on. On: num lock or the numeric keypad is on. Maintenance and Service Guide 1­17 Product Description The notebook top components are continued below and described in Table 1-7. Top Components, Part 2 1­18 Maintenance and Service Guide Product Description Table 1-7 Top Components, Part 2 Item 1 Component Volume mute button (full-featured models only) Volume down button (full-featured models only) Volume up button (full-featured models only) TouchPad Function Mutes or restores system volume. 2 Decreases system volume. 3 Increases system volume. 4 Moves the pointer and selects or activates items on the screen. Can be set to perform other mouse functions, such as scrolling, selecting, and double-clicking. Function like the left and right buttons on an external mouse. Scrolls up or down. 5 6 Left/right TouchPad buttons TouchPad scroll zone Maintenance and Service Guide 1­19 Product Description The external components on the bottom of the notebook are shown below and described in Table 1-8. Bottom Components Table 1-8 Bottom Components Item 1 2 3 Component Primary battery bay Primary battery locking latch Docking connector (full-featured models only) Function Holds the primary battery pack. Secures the primary battery pack into the battery bay. Connects the notebook to an optional docking device. 1­20 Maintenance and Service Guide Product Description Table 1-8 Bottom Components (Continued) Item 4 Component Memory module compartment Function Contains 2 memory slots that support replaceable memory modules. The number of preinstalled memory modules varies by notebook model. Holds an optional wireless LAN device. Mini PCI compartment Ä To prevent an unresponsive system and the display of a warning message, install only a Mini PCI device authorized for use in your notebook by the governmental agency that regulates wireless devices in your country. If you install a device and then receive a warning message, remove the device to restore notebook functionality. Then contact Customer Care. 5 6 7 8 Hard drive bay Primary battery release latch Travel battery connector Fan Holds the primary hard drive. Releases the primary battery pack from the battery bay. Connects an optional travel battery. Provides airflow to cool internal components. Ä To prevent overheating, do not obstruct fans. Do not allow a hard surface, such as a printer, or a soft surface, such as pillows, thick rugs, or clothing, to block airflow. Maintenance and Service Guide 1­21 Product Description 1.5 Design Overview This section presents a design overview of key parts and features of the notebook. Refer to Chapter 3, "Illustrated Parts Catalog," to identify replacement parts, and Chapter 5, "Removal and Replacement Procedures," for disassembly steps. The system board provides the following device connections: Memory module Mini PCI communications devices Hard drive Display Keyboard and TouchPad Audio Intel Pentium M and Intel Celeron processors PC Card Ä CAUTION: To properly ventilate the notebook, allow at least a 7.6--cm (3-inch) clearance on the left and right sides of the notebook. The notebook uses an electric fan for ventilation. The fan is controlled by a temperature sensor and is designed to be turned on automatically when high temperature conditions exist. These conditions are affected by high external temperatures, system power consumption, power management/battery conservation configurations, battery fast charging, and software applications. Exhaust air is displaced through the ventilation grill located on the left side of the notebook. 1­22 Maintenance and Service Guide 2 Troubleshooting Å WARNING: Only authorized technicians trained by HP should repair this equipment. All troubleshooting and repair procedures are detailed to allow only subassembly-/module-level repair. Because of the complexity of the individual boards and subassemblies, do not attempt to make repairs at the component level or modifications to any printed wiring board. Improper repairs can create a safety hazard. Any indication of component replacement or printed wiring board modification may void any warranty or exchange allowances. 2.1 Computer Setup Computer Setup is a system information and customization utility that can be used even when the operating system is not working or will not load. This utility includes settings that are not available in Windows. Using Computer Setup Information and settings in Computer Setup are accessed from the Main, Security, Advanced, or Tools menus: 1. Turn on or restart the notebook. Press f10 while the F10 = ROM-Based Setup message is displayed in the lower-left corner of the screen. To change the language, use the cursor control keys to navigate to the Advanced menu. To view navigation information, press f1. To return to the Computer Setup menu, press esc. Maintenance and Service Guide 2­1 Troubleshooting 2. Select the Main, Security, Advanced, or Tools menu. 3. To close Computer Setup and restart the notebook: Select Exit > Exit Saving Changes, and then press enter. -- or -- Select Exit > Exit Discarding Changes, and then press enter. -- or -- Select Exit > Load Setup Defaults, and then press enter. 4. When you are prompted to confirm your action, press f10. Selecting from the Main Menu Table 2-1 Main Menu Select System Information To Do This Change the system time and system date. View identification information about the notebook. View specification information about the processor, memory and cache size, and system ROM. 2­2 Maintenance and Service Guide Troubleshooting Selecting from the Security Menu Table 2-2 Security Menu Select Administrator Password Power-on Password DriveLock Passwords To Do This Enter, change, or delete an Administrator password. Enter, change, or delete a power-on password. Enable/disable DriveLock; change a DriveLock user or master password. Settings are accessible DriveLock enter Computer Setup byonly when you turning on (not restarting) the notebook. Password Options (Password options can be selected only when a power-on password has been set.) Enable/disable: QuickLock QuickLock on Standby QuickBlank To enable QuickLock on Standby or QuickBlank, you must first enable QuickLock. Device Security Enable/disable: Diskette drive startup* CD-ROM or diskette startup Settings for a DVD-ROM can be entered in the CD-ROM field. *Not applicable to SuperDisk LS-120 drives. Maintenance and Service Guide 2­3 Troubleshooting Selecting from the Advanced Menu Table 2-3 Advanced Menu Select Language Boot Order To Do This Change the Computer Setup language. Enable/disable MultiBoot, which sets a startup sequence that can include most bootable devices and media in the system. Allows electronic and information technology to be accessible to people with varying ranges of abilities. Displays the amount of video memory available on the notebook. Accessibility Options Video Memory Selecting from the Tools Menu Table 2-4 Tools Menu Select Hard Drive Self Test To Do This Run a quick comprehensive self test on hard drives in the system that support the test features. 2­4 Maintenance and Service Guide Troubleshooting 2.2 Troubleshooting Flowcharts Table 2-5 Troubleshooting Flowcharts Overview Flowchart 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11 2.12 2.13 Description "Flowchart 2.1--Initial Troubleshooting" "Flowchart 2.2--No Power, Part 1" "Flowchart 2.3--No Power, Part 2" "Flowchart 2.4--No Power, Part 3" "Flowchart 2.5--No Power, Part 4" "Flowchart 2.6--No Video, Part 1" "Flowchart 2.7--No Video, Part 2" "Flowchart 2.8--Nonfunctioning Docking Device (if applicable)" "Flowchart 2.9--No Operating System (OS) Loading" "Flowchart 2.10--No OS Loading, Hard Drive, Part 1" "Flowchart 2.11--No OS Loading, Hard Drive, Part 2" "Flowchart 2.12--No OS Loading, Hard Drive, Part 3" "Flowchart 2.13--No OS Loading, Diskette Drive" Maintenance and Service Guide 2­5 Troubleshooting Table 2-5 Troubleshooting Flowcharts Overview (Continued) Flowchart 2.14 2.15 2.16 2.17 2.18 2.19 2.20 Description "Flowchart 2.14--No OS Loading, Optical Drive" "Flowchart 2.15--No Audio, Part 1" "Flowchart 2.16--No Audio, Part 2" "Flowchart 2.17--Nonfunctioning Device" "Flowchart 2.18--Nonfunctioning Keyboard" "Flowchart 2.19--Nonfunctioning Pointing Device" "Flowchart 2.20--No Network/Modem Connection" 2­6 Maintenance and Service Guide Troubleshooting Flowchart 2.1--Initial Troubleshooting Begin troubleshooting. N Go to Is there power? "Flowchart 2.2--No Power, Part 1." Y N Beeps, LEDs, or error messages? Check LED board, speaker connections. All drives working? N Go to "Flowchart 2.17--Nonfunction ing Device." Y N Go to Is there video? (no boot) "Flowchart 2.6--No Video, Part 1." Y N Keyboard/ pointing device working? Go to "Flowchart 2.18--Nonfunction ing Keyboard" or "Flowchart 2.19--Nonfunction ing Pointing Device." Y N Go to Is the OS loading? "Flowchart 2.9--No Operating System (OS) Loading." Y N Connecting to network or modem? Y N Go to "Flowchart 2.20--No Network/Modem Connection." Go to Is there sound? "Flowchart 2.15--No Audio, Part 1." Y Y End Maintenance and Service Guide 2­7 Troubleshooting Flowchart 2.2--No Power, Part 1 No power (power LED is off). Remove from docking device (if applicable). N Power up on battery power? Reset power.* Power up on battery power? N Go to "Flowchart 2.3--No Power, Part 2." Y N Power up on AC power? Reset power.* Y N Power up on AC power? Go to "Flowchart 2.4--No Power, Part 3." Y Y Power up in docking device? Done Y *NOTES 1. On select models, there is a separate reset button. 2. On select models, the notebook can be reset using the standby switch and either the lid switch or the main power switch. N 1. Reset the power cables in the docking device and at the AC outlet. 2. Ensure the AC power source is active. 3. Ensure that the power strip is working. Y Done Power up in docking device? N Go to "Flowchart 2.8--Nonfunctioning Docking Device (if applicable)." 2­8 Maintenance and Service Guide Troubleshooting Flowchart 2.3--No Power, Part 2 Continued from "Flowchart 2.2--No Power, Part 1." Visually check for debris in battery socket and clean if necessary. Y Power on? Done N Check battery by recharging it, moving it to another notebook, or replacing it. N Power on? Replace power supply (if applicable). Y N Go to Done Power on? "Flowchart 2.4--No Power, Part 3." Y Done Maintenance and Service Guide 2­9 Troubleshooting Flowchart 2.4--No Power, Part 3 Continued from "Flowchart 2.3--No Power, Part 2." Plug directly into AC outlet. Y Power LED on? Done N Reseat AC adapter in notebook and at power source. Y Power on? Done External N N Power outlet active? Try different outlet. Internal or external AC adapter? Internal Go to Replace external AC adapter. Y Replace power cord. N Power on? "Flowchart 2.5--No Power, Part 4." Y Done Y Power on? Done N 2­10 Maintenance and Service Guide Troubleshooting Flowchart 2.5--No Power, Part 4 Continued from "Flowchart 2.4--No Power, Part 3." Open notebook. Y Loose or damaged parts? N Close notebook and retest. Reseat loose components and boards and replace damaged items. N Power on? Replace the following items (if applicable). Check notebook operation after each replacement: 1. Internal DC-DC converter* 2. Internal AC adapter 3. Processor board* 4. System board* Y Done *NOTE: Replace these items as a set to prevent shorting out among components. Maintenance and Service Guide 2­11 Troubleshooting Flowchart 2.6--No Video, Part 1 No video. Docking Device Stand-alone or docking device? Stand-alone Internal or external display*? External Adjust brightness. Internal Adjust brightness. Go to "Flowchart 2.7--No Video, Part 2."