HP Pavilion dm4 Información técnica Pagina 47
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RTC battery
Description Spare part number
RTC battery 449137-001
Before removing the RTC battery, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn
the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet
and then unplugging the AC adapter from the computer.
4. Remove the battery (see
Battery on page 36).
5. Remove the memory/wireless module compartment cover (see
Memory module on page 37)
Remove the RTC battery:
1. Release the RTC battery from the clips on the system board (1).
2. Remove the RTC battery (2).
Reverse this procedure to install the RTC battery.
Component replacement procedures 39
- Maintenance and Service Guide 1
- Safety warning notice 3
- Table of contents 5
- 1 Product description 9
- TouchPad 13
- Right side 17
- Left side 18
- Display 11 19
- 3 Illustrated parts catalog 21
- Computer major components 22
- Computer major components 15 23
- Computer major components 17 25
- Display assembly components 27
- Plastics Kit 28
- Mass storage devices 29
- Miscellaneous parts 30
- Tools required 37
- Service considerations 37
- Cables and connectors 38
- Drive handling 38
- Grounding guidelines 39
- Serial number 42
- Computer feet 43
- Description Spare part number 44
- RTC battery 47
- WLAN module 48
- Hard drive 51
- Optical drive 53
- Keyboard 55
- 8. Remove the keyboard 56
- Top cover 57
- Fingerprint reader board 61
- Power button board 63
- Display assembly 64
- USB board 71
- Power connector cable 72
- Bluetooth module 74
- Speaker assembly 76
- System board 78
- Fan/heat sink assembly 80
- Processor 85
- 5 Setup Utility 87
- Displaying system information 88
- Exiting Setup Utility 89
- Setup Utility menus 90
- Diagnostics menu 91
- 6 Specifications 92
- Hard drive specifications 94
- 7 Backup and recovery 97
- Creating restore media 98
- Performing a system restore 99
- When to create restore points 103
- Create a system restore point 103
- 8 Recycling 104
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