RJ-11 modem | Compaq CQ20 instruction

Connector pin assignments

RJ-11 (modem)

Pin	Signal

1	Unused

2	Tip

3	Ring

4	Unused

5	Unused

6	Unused

9–4	Maintenance and Service Guide

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Compaq CQ20 manual RJ-11 modem

Contents

Maintenance and Service Guide Compaq Presario CQ20 Notebook PCPage Safety warning notice Contents Setup Utility 11Recycling Product description Category Description Board Memory Hard drivesOptical drives Diskette drive Wireless Integrated Wlan options by way of wireless module Power requirementsCategory Description Board Ethernet External media card Category Description Board Operating system Preinstalled Serviceability End-user replaceable parts External component identification Top componentsDisplay components Item Component Description Sound Mouse TouchPadComponent Function Component Description Maintenance Power OptionsButtons Fn key KeysComponent Function Esc key Lights Front components Left-side components Right-side components Bottom components Illustrated parts catalog Serial number location Computer major components Speaker assembly RTC batteryItem Description Display internal components not illustrated Battery Description Spare Part Number Fan Broadcom 802.11b/g Wlan module Intel 802.11a/b/g/n Wlan module Memory module Cable Kit Description Spare part number Cable Kit Plastics Kit Description Spare part number Plastics Kit Mass storage devices Description Spare part number Power cords Miscellaneous partsDescription Spare part number AC adapter Screw Kit Sequential part number listing Spare part number Description Spare part number Description Spare part number Description Spare part number Description Removal and replacement procedures Preliminary replacement requirementsService considerations Tools required Grounding guidelines Drive handling Packaging and transporting guidelines Workstation guidelines Unknown user password Material Use Voltage protection level Component replacement procedures Serial number Battery Computer feet Hard drive All hard drive spare part kits include a hard drive bracket Removal and replacement procedures Memory module Reverse this procedure to install a memory module Intel 802.11a/b/g/n Wlan modules Wlan moduleBroadcom 802.11b/g Wlan modules Reverse this procedure to install the Wlan module Optical drive Removal and replacement procedures Keyboard Removal and replacement procedures Top cover Removal and replacement procedures Removal and replacement procedures Removal and replacement procedures Speaker assembly Description Spare part number Speaker assembly 493273-001 Removal and replacement procedures Display assembly Removal and replacement procedures Removal and replacement procedures Removal and replacement procedures Removal and replacement procedures Removal and replacement procedures Audio board Description Spare part number Audio board 493272-001 Removal and replacement procedures Fan Description Spare part number Fan 493269-001 Removal and replacement procedures System board Removal and replacement procedures RTC battery Description Spare part number RTC battery 449137-001 Removal and replacement procedures Modem module Description Spare part number Modem module 461749-001 Removal and replacement procedures Bluetooth module Description Spare part number Bluetooth module 398393-002 Removal and replacement procedures Heat sink Removal and replacement procedures Intel Core Duo processors 1-MB cache, 667-MHz FSB ProcessorIntel Core Duo processors 2-MB cache, 800-MHz FSB Removal and replacement procedures Reverse this procedure to install the processor Changing the language of the Setup Utility Setup UtilityStarting the Setup Utility Displaying system information Navigating and selecting in the Setup UtilityRestoring default settings in the Setup Utility Exiting the Setup Utility Setup Utility menusMain menu Security menu Primary Hard Disk Self Test System Configuration menuDiagnostics menu Specifications Computer specifications Inch, Wxga display specifications Hard drive specifications DVD/CD-RW Combo Drive specifications Blu-ray ROM DVD±RW SuperMulti DL Drive specificationsAccess time Applicable disc Read Write System DMA specifications Hardware DMA System function System interrupt specifications Hardware IRQ System function System I/O address specifications Address hex System function shipping configuration EF80-EF9F System memory map specifications Size Memory address System function Screw listing Phillips PM1.5×3.0 screw Color Quantity Length Thread Head diameter Silver Screw listing Phillips PM2.0×3.0 screw Phillips PM2.0×4.0 screw Phillips PM2.0×5.0 captive screw Color Quantity Length Thread Head diameter Black Phillips PM2.0×3.0 screw Phillips PM2.0×6.0 screw Phillips PM2.0×5.0 screw Phillips PM2.0×7.0 captive screw Phillips PM2.0×10.0 captive screw Color Quantity Length Thread Head diameter Silver 10.0 mm Phillips PM2.5×10.0 captive screw Color Quantity Length Thread Head diameter Black 10.0 mm Phillips PM3.0×3.0 screw Phillips PM3.0×4.0 screw Phillips T2.0×2.0BH screw Torx T8M2.5×6.0 slotted screw Screw listing Screw listing Backup and recovery Creating recovery discs Backing up your information When to back upBackup suggestions Using system restore points When to create restore points Performing a recovery Recovering from the recovery discs Connector pin assignments Pin SignalAudio-out headphone Audio-in microphone External monitor Hdmi RJ-11 modem RJ-45 network Universal Serial Bus Power cord set requirements Requirements for all countries and regions Requirements for specific countries and regions Country/region Accredited agency Applicable note number Display BatteryRecycling Recycling Maintenance and Service Guide 11-3 11-4 Maintenance and Service Guide 11-5 11-6 Index Index Esc 2-4fn 2-4function 2-4keypad Index-4 Maintenance and Service Guide Index-5