HP Pavilion d4500 - Desktop PC Informacje Techniczne Strona 62
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Removal and replacement procedures
Maintenance and Service Guide 4–19
RTC battery
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 4-7).
5. Remove the primary hard drive cover (see
“Primary hard drive cover” on page 4-9).
Remove the RTC battery:
» Use a non-conductive pointed tool to reach into the notch on the lower right of the disc cell 1 and lift up to
remove the RTC battery 2 from the socket on the system board.
Reverse this procedure to install the RTC battery. Be sure that the RTC battery is installed with the “+” sign facing
up.
Description Spare part number
RTC battery 449729-001
- Maintenance and Service Guide 1
- Safety warning notice 4
- Contents 5
- 5 Setup Utility 6
- 6 Specifications 6
- 7 Screw listing 7
- 8 Backup and recovery 7
- 9 Connector pin assignments 7
- 10Power cord set requirements 7
- 11Recycling 7
- Product description 9
- Top components 15
- TouchPad 16
- Buttons 17
- Front components 20
- Rear component 21
- Left-side components 21
- Right-side components 23
- Bottom components 24
- Illustrated parts catalog 25
- Computer major components 26
- Kit” on page 3-12 28
- Display assembly components 34
- Cable Kit 36
- Mass storage devices 37
- Miscellaneous parts 38
- “Cable Kit” on 39
- Tools required 44
- Service considerations 44
- Grounding guidelines 45
- Workstation guidelines 46
- Equipment guidelines 47
- Service tag 48
- Computer feet 49
- Optical drive 51
- Hard drive covers 52
- Secondary hard drive cover 53
- Hard drive 55
- Memory module 57
- WLAN module 58
- “Battery” on page 4-7) 60
- “Hard drive” on page 4-12) 60
- RTC battery 62
- TV tuner module 63
- Switch cover and keyboard 64
- “Optical drive” on page 4-8) 65
- Power button board 68
- Speaker assembly 69
- Bluetooth module 70
- Display assembly 71
- Top cover 80
- System board 83
- Modem module 86
- Audio/infrared board 88
- USB board 89
- Subwoofer 90
- TV tuner module cable 91
- Modem module cable 92
- Power connector cable 93
- Fan/heat sink assembly 94
- Processor 97
- Setup Utility 100
- Setup Utility menus 101
- System Configuration menu 102
- Diagnostics menu 102
- Specifications 103
- Hard drive specifications 105
- Screw listing 114
- BrightView display assembly 115
- AntiGlare display assembly 115
- Phillips PM2.0×4.0 screw 121
- Phillips PM2.5×4.0 screw 123
- Phillips PM3.0×4.0 screw 125
- Phillips PM2.0×3.0 screw 126
- Black 4 5.0 mm 2.5 5.0 mm 129
- Black 3 5.0 mm 2.5 7.0 mm 131
- Silver 3 5.0 mm 2.5 7.0 mm 132
- Backup and recovery 134
- Backing up your information 135
- Using system restore points 136
- Performing a recovery 137
- Connector pin assignments 138
- Audio-out (headphone) 139
- External monitor 139
- RJ-11 (modem) 141
- RJ-45 (network) 141
- Universal Serial Bus 142
- Power cord set requirements 143
- Recycling 145
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