HP ProBook 4720s Shuts Off

HP ProBook 4520s Notebook PC and HP ProBook 4720s Notebook PC - Maintenance and Service Guide

Page 20
... computer is off, press the button to turn off the display if the display is closed while the power is on , press the button to shut down the computer. ● When the computer is in the Sleep state, press the button briefly to exit Sleep. ● When the computer is in...

HP ProBook 4520s Notebook PC and HP ProBook 4720s Notebook PC - Maintenance and Service Guide

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...a diskette drive or optical drive, be sure that you are unsure whether the computer is closed. Handle drives on , and then shut it in Hibernation, turn the computer on surfaces covered with extreme care; Be sure that cables are fragile components that must be sure ...that they cannot be handled with care. these precautions: Before removing or inserting a hard drive, shut down through the operating system. While handling a drive, avoid touching the connector. To prevent damage to the computer, damage to temperature extremes...

HP ProBook 4520s Notebook PC and HP ProBook 4720s Notebook PC - Maintenance and Service Guide

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... Hibernation, turn the computer on a flat surface with 15.6-in computers with the battery bay toward you. 2. Turn the computer upside-down on , and then shut it into the battery bay until you hear a click. 50 Chapter 4 Removal and replacement procedures...

HP ProBook 4520s Notebook PC and HP ProBook 4720s Notebook PC - Maintenance and Service Guide

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... unsure whether the computer is off or in displays 598691-xx1 NOTE: For a detailed list of available keyboards, see Battery on , and then shut it down through the operating system. 2. If you . 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 Sequential part number listing on page 35. Shut down with 15.6-in Hibernation, turn the computer on page 50). Disconnect all external devices connected to the computer. 3. Position the computer upside-...

HP ProBook 4520s Notebook PC and HP ProBook 4720s Notebook PC - Maintenance and Service Guide

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... the slot rises away from the computer.) Component replacement procedures 55 Remove the battery (see Switch cover and keyboard on page 50). 5. Shut down through the operating system. 2. If you . 2. Remove the memory module: 1. Remove the switch cover and keyboard (see Battery on... page 51). Spread the retaining tabs (1) on , and then shut it is not necessary to disconnect the keyboard cable from the computer. 4. Description 2-GB (PC3-10600, 1333-MHz, DDR3) 1-GB (PC3-10600, ...

HP ProBook 4520s Notebook PC and HP ProBook 4720s Notebook PC - Maintenance and Service Guide

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.... 56 Chapter 4 Removal and replacement procedures NOTE: Memory modules are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down the computer. Reverse this procedure to the computer. 3. Description DVD±RW Double-Layer Drive with LightScribe (includes bezel) Blu-ray Disc ROM...

HP ProBook 4520s Notebook PC and HP ProBook 4720s Notebook PC - Maintenance and Service Guide

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Shut down through the operating system. 2. Remove the switch cover and keyboard (see Battery on page 50). 5. 7. Power button board Description Switch cover with power button ... removing the power button board, follow these steps: 1. Reverse this procedure to the computer. 3. Remove the battery (see Switch cover and keyboard on , and then shut it down the computer. Disconnect all external devices connected to reassemble and install an optical drive. Remove the optical drive bracket (2). Disconnect the power from...

HP ProBook 4520s Notebook PC and HP ProBook 4720s Notebook PC - Maintenance and Service Guide

Page 68
Remove the battery (see Power button board on , and then shut it down the computer. Remove the speakers from the computer. 4. Disconnect all external devices connected to the top cover. 2. Disconnect the speaker cable from the ... steps: 1. Disconnect the power button cable from the connector (2) on page 50). 5. Remove the two PM2.5x6.0 screws (1) that secure the speakers to the computer. 3. Shut down through the operating system. 2. Speakers Description For use in computers with 17.3-in displays For use in computers with 15.6-in Hibernation, turn the...

HP ProBook 4520s Notebook PC and HP ProBook 4720s Notebook PC - Maintenance and Service Guide

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...unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer. Reverse this procedure to the computer. 3. Shut down through the operating system. 2. If you are unsure whether the computer is 603700-001. Thermal shield NOTE: The spare part number... for the thermal shield is off or in Hibernation, turn the computer on, and then shut it down the computer. Before removing the thermal shield, follow these steps: 1. Disconnect all external devices connected to install the speakers. 3. Remove...

HP ProBook 4520s Notebook PC and HP ProBook 4720s Notebook PC - Maintenance and Service Guide

Page 75
Before removing the WLAN module, follow these steps: 1. Shut down through the operating system. 2. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the ... "Main" terminal. The white WLAN antenna cable is connected to the WLAN module "Aux" terminal. 3. Switch cover and keyboard (see Thermal shield on , and then shut it down the computer. Position the computer right-side up with the front toward you are unsure whether the computer is off or in Hibernation...

HP ProBook 4520s Notebook PC and HP ProBook 4720s Notebook PC - Maintenance and Service Guide

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...4. WWAN module NOTE: Only computers with a notch (4) to restore computer functionality, and then contact technical support through the operating system. 2. Shut down through Help and Support. Disconnect the power from the computer by pulling the module away from the computer. 68 Chapter 4 Removal and ...at an angle. CAUTION: To prevent an unresponsive system, replace the wireless module only with a wireless module authorized for the HP un2420 Broadband Module is off or in your country or region. Disconnect all external devices connected to install the WLAN module. ...

HP ProBook 4520s Notebook PC and HP ProBook 4720s Notebook PC - Maintenance and Service Guide

Page 78
... page 62). Description Heat sink for use in computers with UMA graphics subsystems Heat sink for use in Hibernation, turn the computer on, and then shut it down the computer. Remove the following components: a. b. Following the sequence stamped into the heat sink, loosen the six captive screws (1), (2), (3), (4), (5), (6), around the processor. 70...

HP ProBook 4520s Notebook PC and HP ProBook 4720s Notebook PC - Maintenance and Service Guide

Page 83
... from the computer. 4. Remove the battery (see Heat sink and fan on page 69). Remove the heat sink and fan (see Battery on , and then shut it . Position the computer right-side up and remove it down the computer. If you . 2. Remove the switch cover and keyboard (see Thermal shield on... to turn the processor locking screw (1) one-half turn the computer on page 50). 5. Component replacement procedures 75 Before removing the processor, follow these steps: 1. Shut down through the operating system. 2.

HP ProBook 4520s Notebook PC and HP ProBook 4720s Notebook PC - Maintenance and Service Guide

Page 84
...) Palm rest for 15.6-in displays with red trim (includes TouchPad) Palm rest for 15.6-in Hibernation, turn the computer on, and then shut it down the computer. Shut down through the operating system. 2. Remove the battery (see Switch cover and keyboard on page 50). 5. Disconnect all external devices connected to the...

HP ProBook 4520s Notebook PC and HP ProBook 4720s Notebook PC - Maintenance and Service Guide

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...598697-001 598696-001 Before removing the hard drive, follow these steps: 1. If you . 2. Remove the battery (see Palm rest on , and then shut it from the system board. 78 Chapter 4 Removal and replacement procedures Remove the hard drive: 1. Remove the two Phillips PM2.5×6.0 screws (1) and ...loosen the Phillips PM2.5×11.0 captive screw (2) that secure the hard drive to the computer. 3. Shut down through the operating system. 2. Remove the palm rest (see Battery on page 51). Grasp the mylar tab on the hard drive and slide the...

HP ProBook 4520s Notebook PC and HP ProBook 4720s Notebook PC - Maintenance and Service Guide

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...) ● 17.3-in HD AntiGlare display assembly for use in computers equipped with 17.3-in Hibernation, turn the computer on, and then shut it down the computer. If you . 2. Shut down through the operating system. 2. Disconnect the power button cable from the routing channels. 80 Chapter 4 Removal and replacement procedures Disconnect all...

HP ProBook 4520s Notebook PC and HP ProBook 4720s Notebook PC - Maintenance and Service Guide

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... (see Display assembly on computers with red trim (1366×768 resolution) 604854-001 Before removing the 15.6-in displays on , and then shut it down the computer. Shut down through the operating system. 2. Display assembly on computers with 15.6-in displays NOTE: For information about removing the display from the computer...

HP ProBook 4520s Notebook PC and HP ProBook 4720s Notebook PC - Maintenance and Service Guide

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... to the computer. 3. Remove the display assembly (see Speakers on page 60). 9. Position the computer right-side up with 15.6-in computers. Shut down through the operating system. 2. Remove the speakers (see Display assembly on computers with 17.3-in displays on page 80 or Display assembly on ...86). 11. Remove the hard drive (see Palm rest on page 51). 6. Remove the following components: Remove the top cover on , and then shut it down the computer. Remove the battery (see Switch cover and keyboard on page 76). 12. If you . 92 Chapter 4 Removal and replacement ...

HP ProBook 4520s Notebook PC and HP ProBook 4720s Notebook PC - Maintenance and Service Guide

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... on page 92). Remove the RTC battery: 1. RTC battery Description RTC battery Spare part number 449137-001 Before removing the RTC battery, follow these steps: 1. Shut down through the operating system. 2. Remove the optical drive (see Palm rest on page 50). 5. Position the computer right-side up with 15.6-in Hibernation... on page 60). 9. Remove the power button board cable (see Speakers on page 78). 13. Remove the speakers (see Power button board on , and then shut it down the computer.

HP ProBook 4520s Notebook PC and HP ProBook 4720s Notebook PC - Maintenance and Service Guide

Page 106
... on page 76). 12. Remove the Bluetooth module: 1. Disconnect the Bluetooth cable (1) from the system board and from the computer. 4. Description HP Integrated Bluetooth 2.1 module for more Cable Kit spare part number information. Remove the speakers (see Palm rest on page 60). 9. Remove the thermal...92). Remove the optical drive (see Top cover on page 30 for use in the Cable Kit, spare part number 599807-001. Shut down through the operating system. 2. Disconnect all countries and regions except Japan and Asia Pacific countries and regions Spare part number 537921...

HP ProBook 4720s Shuts Off - Notebook PC