User manual HP COMPAQ NC6220 - Supplementary Guide

Maintenance and Service Guide HP Compaq nc6220 and nc6230 Notebook PC Document Part Number: 371035-003 February 2006 This guide is a troubleshooting reference used for maintaining and servicing the computer. It provides comprehensive information on identifying computer features, components, and spare parts; troubleshooting computer problems; and performing computer disassembly procedures. © Copyright 2006 Hewlett-Packard Development Company, L.P. Microsoft and Windows are U.S. registered trademarks of Microsoft Corporation. Intel, Celeron, and Pentium 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. SD Logo is a trademark of its proprietor. 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 nc6220 and nc6230 Notebook PC Third Edition February 2006 First Edition February 2005 Document Part Number: 371035-003 Contents 1 Product Description 1.1 1.2 1.3 1.4 1.5 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1­2 Resetting the Computer. . . . . . . . . . . . . . . . . . . . . . . 1­4 Power Management. . . . . . . . . . . . . . . . . . . . . . . . . . 1­5 External Components . . . . . . . . . . . . . . . . . . . . . . . . 1­6 Design Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . 1­22 2 Troubleshooting 2.1 Computer Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2­1 2.2 Troubleshooting Flowcharts . . . . . . . . . . . . . . . . . . . 2­5 3 Software Update and Recovery 3.1 Software Updates . . . . . . . . . . . . . . . . . . . . . . . . . . . 3­1 3.2 System Recovery. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3­6 Maintenance and Service Guide iii Contents 4 Illustrated Parts Catalog 4.1 4.2 4.3 4.4 4.5 4.6 4.7 Serial Number Location . . . . . . . . . . . . . . . . . . . . . . 4­1 Computer Major Components. . . . . . . . . . . . . . . . . . 4­2 Miscellaneous Plastics Kit . . . . . . . . . . . . . . . . . . . 4­12 Miscellaneous Cable Kit . . . . . . . . . . . . . . . . . . . . . 4­14 Mass Storage Devices . . . . . . . . . . . . . . . . . . . . . . . 4­16 Miscellaneous (Not Illustrated). . . . . . . . . . . . . . . . 4­17 Sequential Part Number Listing . . . . . . . . . . . . . . . 4­20 5 Removal and Replacement Preliminaries 5.1 5.2 5.3 5.4 5.5 5.6 5.7 Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Service Considerations . . . . . . . . . . . . . . . . . . . . . . . Preventing Damage to Removable Drives . . . . . . . . Preventing Electrostatic Damage . . . . . . . . . . . . . . . Packaging and Transporting Precautions . . . . . . . . . Workstation Precautions . . . . . . . . . . . . . . . . . . . . . . Grounding Equipment and Methods . . . . . . . . . . . . . 5­1 5­2 5­3 5­4 5­5 5­6 5­6 iv Maintenance and Service Guide Contents 6 Removal and Replacement Procedures 6.1 Serial Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6­2 6.2 Disassembly Sequence Chart . . . . . . . . . . . . . . . . . . 6­3 6.3 Preparing the Computer for Disassembly . . . . . . . . . 6­5 6.4 Hard Drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6­7 6.5 Computer Feet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6­11 6.6 Bluetooth Board . . . . . . . . . . . . . . . . . . . . . . . . . . . 6­12 6.7 MultiBay II Device . . . . . . . . . . . . . . . . . . . . . . . . . 6­13 6.8 External Memory Module . . . . . . . . . . . . . . . . . . . . 6­14 6.9 Keyboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6­16 6.10 Switch Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6­20 6.11 LED Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6­22 6.12 TPM Security Module. . . . . . . . . . . . . . . . . . . . . . 6­23 6.13 Fan. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6­24 6.14 Heat Sink. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6­25 6.15 Processor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6­28 6.16 Modem Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6­30 6.17 Internal Memory Module . . . . . . . . . . . . . . . . . . . 6­31 6.18 TouchPad. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6­32 6.19 Mini PCI Communications Module . . . . . . . . . . . 6­34 6.20 Display Assembly . . . . . . . . . . . . . . . . . . . . . . . . . 6­36 6.21 Top Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6­38 6.22 Serial Connector Module . . . . . . . . . . . . . . . . . . . 6­42 6.23 Audio Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6­44 6.24 System Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6­48 Maintenance and Service Guide v Contents 7 Specifications A Connector Pin Assignments B Power Cord Set Requirements C Screw Listing D Display Component Recycling Index vi Maintenance and Service Guide 1 Product Description The HP Compaq nc6220 and nc6230 Notebook PCs offer advanced modularity, Intel® Pentium® M and Celeron® M processors, and extensive multimedia support. HP Compaq nc6220 and nc6230 Notebook PCs Maintenance and Service Guide 1­1 Product Description 1.1 Features The following processors are available, varying by computer model: Intel Pentium M 770 (2.13-GHz) Intel Pentium M 760 (2.00-GHz) Intel Pentium M 750 (1.86-GHz) Intel Pentium M 740 (1.73-GHz) Intel Pentium M 730 (1.60-GHz) Intel Celeron M 1.50-GHz The following displays are available, varying by computer model: 14.1-inch, SXGA, TFT (1400 × 1050) with over 16.8 million colors 14.1-inch, XGA, TFT (1280 × 800) with over 16.8 million colors The following high-capacity hard drives are available, varying by computer model: 60-GB (7200-rpm) 80-GB, 60-GB, 40-GB (5400-rpm) 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 computer model Full-size Windows keyboard with embedded numeric keypad TouchPad pointing device, including a dedicated vertical scroll region Integrated 10Base-T/100Base-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 802.11a/b/g or 802.11b/g WLAN device 1­2 Maintenance and Service Guide Product Description Support for one Type I or Type II PC Card slot, with support for both 32-bit (CardBus) and 16-bit PC Cards, varying by computer model External 65-watt AC adapter with 3-wire power cord, varying by computer model 6-cell Li-Ion battery pack Stereo speakers Volume up, volume mute, and volume down buttons Support for the following optical drives: DVD-ROM Drive DVD+RW/R and CD-RW Combo Drive DVD/CD-RW Combo Drive Connectors: Audio-out (headphone) Audio-in (microphone) Universal Serial Bus (USB) v. 2.0 (3 ports) Power External monitor RJ-11 (modem) RJ-45 (network) IEEE 1394 Travel battery SD Memory Card slot Smart card reader Infrared Parallel port S-Video-out Docking connector Maintenance and Service Guide 1­3 Product Description 1.2 Resetting the Computer If the computer you are servicing has an unknown password, follow these steps to clear the password. These steps also clear CMOS: 1. Prepare the computer for disassembly (refer to Section 6.3, "Preparing the Computer for Disassembly," for more information). 2. Remove the real-time clock (RTC) battery (refer to Section 6.24, "System Board," for more information on removing and replacing the RTC battery). 3. Wait approximately 5 minutes. 4. Replace the RTC battery and reassemble the computer. 5. Connect AC power to the computer. Do not reinsert any battery packs at this time. 6. Turn on the computer. All passwords and all CMOS settings have been cleared. 1­4 Maintenance and Service Guide Product Description 1.3 Power Management The computer comes with power management features that extend battery operating time and conserve power. The computer 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 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 computer are shown below and described in Table 1-1. Front Components Table 1-1 Front Components Item 1 2 Component Wireless light Power light Function On: an integrated wireless device has been turned on. On: Computer is turned on. Blinking: Computer is in standby. Off: Computer is off. 1­6 Maintenance and Service Guide Product Description Table 1-1 Front Components (Continued) Item 3 Component Battery light Function 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 computer is connected to an external power source, the light is turned off when all batteries in the computer are fully charged. If the computer is not connected to an external power source, the light is turned off until the battery reaches a low-battery condition. On: A drive in the hard drive bay or MultiBay II is being accessed. Opens the computer. Provides wireless communication between the computer and an optional IrDA-compliant device. Produce stereo sound. 4 Integrated Drive Electronics (IDE) drive light Display release latch Infrared port 5 6 7 Speakers (2) Maintenance and Service Guide 1­7 Product Description The external components on the right side of the computer 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 Internal microphone Audio-in (microphone) jack USB ports (2) Function Produces system sound when connected to optional powered stereo speakers, headphones, headset, or television audio. Records sound. Connects an optional microphone. Connects USB 1.1- and 2.0-compliant devices to the computer using a standard USB cable. Holds a MultiBay II device. Connects an optional serial device. 2 3 4 5 6 MultiBay II Serial port Maintenance and Service Guide 1­9 Product Description The external components on the left side of the computer are shown below and described in Table 1-3. Left-Side Components Table 1-3 Left-Side Components Item 1 Component Security cable slot Function Attaches an optional security cable to the computer. Ä 2 3 RJ-45 (network) jack RJ-11 (modem) jack The purpose of security solutions is to act as a deterrent. These solutions do not prevent the product from being mishandled or stolen. Connects a network cable. Connects the modem cable. 1­10 Maintenance and Service Guide Product Description Table 1-3 Left-Side Components (Continued) Item 4 Component Vent Function Enables airflow to cool internal components. Ä To prevent overheating, do not obstruct vents. Using the computer on a soft surface, such as a pillow, blanket, rug, or thick clothing, may block airflow. 5 USB port Connects USB 1.1- and 2.0-compliant devices to the computer using a standard USB cable. Supports optional Type I or Type II PC Cards. Ejects an optional PC Card from the PC Card slot. Accepts smart cards. Accepts Secure Digital (SD) Memory Cards. 6 7 8 9 PC Card slot PC Card eject button Smart card reader SD Memory Card slot Maintenance and Service Guide 1­11 Product Description The external components on the rear panel of the computer 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 2 3 Component External monitor port Power connector S-Video-out jack Function Connects an optional external monitor or overhead projector. Connects an AC adapter or an optional automobile or aircraft adapter. Is a 7-pin, dual-purpose jack. It connects an optional S-Video device such as a television, VCR, camcorder, overhead projector, or video capture card by means of an optional, standard (4-pin) S-Video cable. The extra 3 pins also enable an optional S-Video-to-composite adapter to be used with the computer. Maintenance and Service Guide 1­13 Product Description The standard keyboard components of the computer 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 Execute frequently used system functions when pressed in combination with the fn key. 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. Displays the Windows Start menu. Displays a shortcut menu for items beneath the pointer. Moves the cursor around the screen. 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 Embedded numeric keypad num lock key Maintenance and Service Guide 1­15 Product Description The computer top components are shown below and described in Table 1-6. Top Components, Part 1 1­16 Maintenance and Service Guide Product Description Table 1-6 Top Components, Part 1 Item 1 2 Component Power light Power button Function On: The computer is on. When the computer is: Off, press and release to turn on the computer. In standby, press and release to exit standby. In hibernation, press and release to restore from hibernation. If the system has stopped responding and Windows shutdown procedures cannot be used, press to the left and hold for 5 seconds to turn off the computer. Enables you to view a list of commonly used software solutions. Initiates standby if the display is closed while the computer is turned on. Enables/disables the WLAN and Bluetooth® devices. On: An integrated wireless device is hardware enabled. Turns on Presentation mode. On: caps lock is on. On: num lock is on or the embedded numeric keypad is enabled. Turns off the computer sound. 3 4 5 Info Center button Display switch Wireless button Wireless light 6 7 8 9 Presentation mode button Caps lock light Num lock light Volume mute button Maintenance and Service Guide 1­17 Product Description The computer 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 2 3 4 5 6 7 Component Volume down button Volume up button Pointing stick Left/right pointing stick buttons TouchPad scroll zone Left/right TouchPad buttons TouchPad Function Decreases computer sound. Increases computer sound. Moves the pointer and selects or activates items on the screen. Function like the left and right buttons on an external mouse. Scrolls up or down. Function like the left and right buttons on an external mouse. 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. Maintenance and Service Guide 1­19 Product Description The external components on the bottom of the computer are shown below and described in Table 1-8. Bottom Components 1­20 Maintenance and Service Guide Product Description Table 1-8 Bottom Components Item 1 2 3 4 5 6 7 8 Component Primary battery bay Primary battery locking latch Travel battery connector Expansion memory module compartment Hard drive bay Docking connector Primary battery release latch Vents (3) Function Holds the primary battery pack. Secures the primary battery pack into the battery bay. Connects an optional travel battery. Accepts one optional memory module. Holds the primary hard drive. Connects the computer to an optional docking device. Releases the primary battery pack from the battery bay. Enable airflow to cool internal components. Ä To prevent overheating, do not obstruct vents. Using the computer on a soft surface, such as a pillow, blanket, rug, or thick clothing, may 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 computer. Refer to Chapter 4, "Illustrated Parts Catalog," to identify replacement parts, and Chapter 6, "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 M processors PC Card Ä CAUTION: To properly ventilate the computer, allow at least a 7.6-cm (3-inch) clearance on the left and right sides of the computer. The computer 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 computer. 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 computer. 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 computer: 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 computer. 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 computer. Password Options Enable/disable: QuickLock QuickLock on Standby QuickBlank Password options can be selected only when a power-on password has been set. To enable QuickLock on Standby or QuickBlank, you must first enable QuickLock. Enable/disable: Diskette drive startup* CD-ROM or diskette startup Device Security 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 computer. 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--Nonfunctioning 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--Nonfunctioning Keyboard" or "Flowchart 2.19--Nonfunctioning 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 N 1. Reseat 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. *NOTES 1. On select models, there is a separate reset button. 2. On select models, the computer can be reset using the standby switch and either the lid switch or the main power switch. 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 computer, 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 computer 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 Y Done 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 computer. Y Loose or damaged parts? N Close computer and retest. Reseat loose components and boards and replace damaged items. N Power on? 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* *NOTE: Replace these items as a set to prevent shorting out among components. Y Done 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." *NOTE: To change from internal to external display, use the hotkey combination. Y Video OK? Done N A Press lid switch to ensure operation. Y Video OK? Done Video OK? Y Done N Check for bent pins on cable. N Replace the following one at a time. Test after each replacement. 1. Cable between computer and computer display (if applicable) 2. Display 3. System board N Video OK? Try another display. Internal and external video OK? N Replace system board. Y Done Y Done 2­12 Maintenance and Service Guide Troubleshooting Flowchart 2.7--No Video, Part 2 Continued from "Flowchart 2.6--No Video, Part 1." Remove computer from docking device, if connected. Adjust display brightness. Check brightness of external monitor. N Go to "A" in Video OK? "Flowchart 2.6--No Video, Part 1." Y Video OK? Done Y Check that computer is properly seated in docking device, for bent pins on cable, and for monitor connection. N Try another external monitor. Y Video OK? Done Internal and external video OK? Y Done N N