Compaq CQ40 - page 59

4. Remove the RTC battery (2).

Reverse this procedure to install the RTC battery.

Component replacement procedures 51

Contents

Main Page Page Page Table of contents Page Page Page 1 Product description 2 Chapter 1 Product description Page 4 Chapter 1 Product description Page 2 External component identification Top components 6 Chapter 2 External component identification TouchPad Lights Top components 7 Buttons and speakers 8 Chapter 2 External component identification Top components 9 Keys 10 Chapter 2 External component identification Display Page Front components Front components 13 Left-side components 14 Chapter 2 External component identification Rear component Right-side components Rear component 15 Bottom components 16 Chapter 2 External component identification Page Page Computer major components 19 20 Chapter 3 Illustrated parts catalog Computer major components 21 22 Chapter 3 Illustrated parts catalog Computer major components 23 Display assembly components 24 Chapter 3 Illustrated parts catalog Page Mass storage devices 26 Chapter 3 Illustrated parts catalog Miscellaneous parts Miscellaneous parts 27 Sequential part number listing 28 Chapter 3 Illustrated parts catalog Sequential part number listing 29 30 Chapter 3 Illustrated parts catalog Sequential part number listing 31 32 Chapter 3 Illustrated parts catalog 4 Removal and replacement procedures Preliminary replacement requirements Tools required Service considerations Plastic parts Cables and connectors Drive handling Grounding guidelines Electrostatic discharge damage Page Page Unknown user password Page Page Battery Optical drive Page Hard drive Page Page WLAN module Component replacement procedures 47 Page Page RTC battery Page Memory module Page Keyboard Page Switch cover Page Speaker assembly Page Display assembly Page Page Page Page Camera/microphone module Page Top cover Page Page TouchPad button board Bluetooth module Page Modem module Audio board USB board Page Power connector cable Page System board Page Page Fan/heat sink assembly Page Page Processor System fan Page 5 Setup Utility Starting the Setup Utility Changing the language of the Setup Utility Navigating and selecting in the Setup Utility Displaying system information Restoring default settings in the Setup Utility Exiting the Setup Utility Setup Utility menus Diagnostics menu 92 Chapter 5 Setup Utility 6 Specifications Computer specifications Computer specifications 93 14.1-inch, WXGA, BrightView display specifications 94 Chapter 6 Specifications Hard drive specifications Hard drive specifications 95 DVDRW and CD-RW Super Multi Double-Layer Combo Drive specifications 96 Chapter 6 Specifications System DMA specifications System DMA specifications 97 System interrupt specificationsIntel processors 98 Chapter 6 Specifications System interrupt specificationsAMD processors System interrupt specificationsAMD processors 99 System I/O address specificationsIntel processors 100 Chapter 6 Specifications System I/O address specificationsIntel processors 101 System I/O address specificationsAMD processors 102 Chapter 6 Specifications System I/O address specificationsAMD processors 103 System memory map specificationsIntel processors System memory map specificationsAMD processors 104 Chapter 6 Specifications System memory map specificationsAMD processors 105 Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page 8 Backup and recovery Recovering system information Backing up your information When to back up Backup suggestions Using system restore points Creating recovery discs Performing a recovery Recovering from the recovery discs Recovering from the dedicated recovery partition (select models only) Page 9 Connector pin assignments External monitor 130 Chapter 9 Connector pin assignments RJ-11 (modem) RJ-45 (network) RJ-11 (modem) 131 HDMI Universal Serial Bus 132 Chapter 9 Connector pin assignments Page 10 Power cord set requirements Requirements for all countries or regions Requirements for specific countries or regions Requirements for specific countries or regions 135 11 Recycling Battery Display Page Page Page Page Page Index