HP Pavilion dm4 Maintenance and Service Guide
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- HP Pavilion dm4 | Maintenance and Service Guide - Page 1
HP Pavilion dm4 Entertainment PC Maintenance and Service Guide - HP Pavilion dm4 | Maintenance and Service Guide - Page 2
warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. HP shall not be liable for technical or editorial errors or omissions contained herein. Second Edition: December 2011 First Edition: April 2010 Document Part Number - HP Pavilion dm4 | Maintenance and Service Guide - Page 3
Safety warning notice WARNING! To reduce the possibility of heat-related injuries or of overheating the computer, do not place the computer directly on your lap or obstruct the computer air vents. Use the computer only on a hard, flat surface. Do not allow another hard surface, such as an adjoining - HP Pavilion dm4 | Maintenance and Service Guide - Page 4
iv Safety warning notice - HP Pavilion dm4 | Maintenance and Service Guide - Page 5
Display assembly components ...25 Plastics Kit ...26 Mass storage devices ...27 Miscellaneous parts ...28 Sequential part number listing ...29 4 Removal and replacement procedures ...35 Preliminary replacement requirements 35 Tools required ...35 Service considerations ...35 Plastic parts ...35 v - HP Pavilion dm4 | Maintenance and Service Guide - Page 6
guidelines 38 Equipment guidelines 39 Component replacement procedures 40 Serial number ...40 Computer feet ...41 Battery ...42 SIM ...43 Memory module ...44 RTC battery ...46 WLAN module ...47 WWAN module ...51 Hard drive ...53 Optical drive ...55 Keyboard ...57 Top cover ...59 Fingerprint - HP Pavilion dm4 | Maintenance and Service Guide - Page 7
Serial Bus ...107 9 Power cord set requirements ...108 Requirements for all countries or regions 108 Requirements for specific countries or regions 109 10 Recycling ...110 Battery ...110 Display ...110 Index ...116 vii - HP Pavilion dm4 | Maintenance and Service Guide - Page 8
viii - HP Pavilion dm4 | Maintenance and Service Guide - Page 9
Category Product Name Processors Chipset Graphics Description Discrete HP Pavilion dm4 Entertainment PC √ Intel® Core™ i7 processor 640M, 2. HD5450 with 512-MB of dedicated video memory [64-MB×16 DDR3, 4 pcs, 800-MHz]) ATI Mobility Radeon™ HD6370 with 1024-MB of √ dedicated video - HP Pavilion dm4 | Maintenance and Service Guide - Page 10
following solid-state drive: √ √ ● 160-GB Optical drives Supports the following 9.5-mm (0.50-in) tray load, √ √ fixed, SATA drive: DVD±R/RW SuperMulti DL Drive Camera HP TrueVision √ √ Low light, fixed (no tilt), activity LED √ √ 640 × 480 by 24 frames per second √ √ Microphone - HP Pavilion dm4 | Maintenance and Service Guide - Page 11
Supports support: supports SD, MMC, MS, √ √ Mspro, xD Supports mini versions of SD, MMC, and MS Duo √ √ with adapter (adapter not included) Ports VGA (Dsub 15-pin) supporting : √ √ ● 1600 x 1200 resolution at 75 Hz ● VGA (Dsub 15-pin) supporting HDMI v1.3 supporting up to 1080p - HP Pavilion dm4 | Maintenance and Service Guide - Page 12
reader with Digital Persona Software √ Support Preinstalled: √ Windows 7 Professional (64 bit) √ Windows 7 Home Premium (64 bit) √ Windows 7 Home Basic (32 and 64 bit) √ FreeDOS √ RedFlag √ End-user replaceable parts: √ AC adapter √ Battery (system) √ Hard drive √ Memory - HP Pavilion dm4 | Maintenance and Service Guide - Page 13
2 External component identification Identifying the hardware Components included with the computer may vary by region and model. The illustrations in this chapter identify the standard features on most computer models. To see a list of hardware installed in the computer, follow these steps: 1. - HP Pavilion dm4 | Maintenance and Service Guide - Page 14
double-tap the button to turn the TouchPad on and off. (2) TouchPad zone* Moves the pointer and selects or activates items on the screen. (3) Left TouchPad button* Functions like the left button on an external mouse. (4) Right TouchPad button* Functions like the right button on an external - HP Pavilion dm4 | Maintenance and Service Guide - Page 15
Lights Component (1) Power light (2) Mute light (3) Wireless light (4) Caps lock light (5) TouchPad light (6) Fingerprint reader light Description ● White: Power is on. ● Blinking White: The computer is in the Sleep state. NOTE: Another power light is located on the left side of the - HP Pavilion dm4 | Maintenance and Service Guide - Page 16
reader Allows a fingerprint logon to Windows, instead of a password logon. *This table describes factory settings. For information about changing factory settings, refer to the user guides located in Help and Support. 8 Chapter 2 External component identification - HP Pavilion dm4 | Maintenance and Service Guide - Page 17
Keys Component (1) esc key (2) fn key (3) Windows logo key (4) Windows applications key (5) Action keys Description Displays system information when pressed in combination with the fn key. Displays system information when pressed in combination with the esc key. Displays the Windows - HP Pavilion dm4 | Maintenance and Service Guide - Page 18
Front components Component (1) Digital Media Slot (2) Speakers (2) Right-side components Description Supports the following optional digital card formats: ● Memory Stick (MS) ● Memory Stick Pro (MSP) ● MultiMediaCard (MMC) ● Secure Digital (SD) Memory Card ● Secure Digital High Capacity (SDHC) - HP Pavilion dm4 | Maintenance and Service Guide - Page 19
battery is charging. ● Blinking: A battery that is the only available power source has reached a low battery level. When the battery reaches a critical battery level, the battery hard drive is being accessed. ● Amber: HP ProtectSmart Hard Drive Protection has temporarily parked the hard drive. - HP Pavilion dm4 | Maintenance and Service Guide - Page 20
Component (6) Power light (7) Vents (3) (8) RJ-45 (network) lights (9) RJ-45 (network) jack (10) HDMI port (11) Combo eSATA/USB port Description ● On: Power is on. ● Blinking: The computer is in the Sleep state. NOTE: Another power light is located next to the power button. Enable - HP Pavilion dm4 | Maintenance and Service Guide - Page 21
Display components Component (1) Internal display switch (2) Webcam light (3) Webcam (4) Internal microphone Description Turns off the display if the display is closed while the power is on. White: The webcam is in use. Records video and captures still photographs. Record sound. Display - HP Pavilion dm4 | Maintenance and Service Guide - Page 22
Description Holds the battery. Releases the battery from the battery bay. Enable airflow memory modules. NOTE: To prevent an unresponsive system, replace the wireless module only with a wireless module authorized your country or region. If you replace the module and then receive a warning message - HP Pavilion dm4 | Maintenance and Service Guide - Page 23
, refer to the section of the Regulatory, Safety and Environmental Notices that applies to your country or region. These notices are located in Help and Support. Wireless antennas 15 - HP Pavilion dm4 | Maintenance and Service Guide - Page 24
* Connects an AC adapter to an AC outlet. (2) AC adapter Converts AC power to DC power. (3) Battery* Powers the computer when the computer is not plugged into external power. *Batteries and power cords vary in appearance by region and country. 16 Chapter 2 External component identification - HP Pavilion dm4 | Maintenance and Service Guide - Page 25
the computer serial number and model number located in the battery bay of the computer. ● Product name (1). This is product's hardware components. The part number helps a service technician to determine what components and parts are , drivers, and support for the computer. Serial number location 17 - HP Pavilion dm4 | Maintenance and Service Guide - Page 26
Computer major components 18 Chapter 3 Illustrated parts catalog - HP Pavilion dm4 | Maintenance and Service Guide - Page 27
in models equipped with WWAN For use in models not equipped with WWAN Keyboards For use in Brazil For use in English and French Canada For use in Power connector cable (includes power connector and cable) System board (includes replacement thermal material) For use in models equipped with 1 GB of - HP Pavilion dm4 | Maintenance and Service Guide - Page 28
UMA graphics For use in models equipped with WiMAX and UMA graphics Processor (includes replacement thermal material) Intel Core i7 processor, Dual Core ● 640M, 2.80Hz ( included in the Misc Cable Kit, spare part number 608227-001. HP un2420 Broadband Module (WWAN) WLAN modules Atheros AR9285 802.11 - HP Pavilion dm4 | Maintenance and Service Guide - Page 29
Item Description Spare part number Atheros AR9285 802.11 a/b/g/n 2x2 WiFi adapter 580101-002 Afghanistan, Albania, Algeria, Andorra, Angola, Antigua and Barbuda, Argentian, Armenia, Aruba, Australia, Austria, Azerbaijan, Bahamas, Bahrain, Barbados, Belgium, Belize, Benin, Bermuda, Bhutan, - HP Pavilion dm4 | Maintenance and Service Guide - Page 30
Item Description Spare part number Broadcom 43224AGN 802.11a/b/g/draft-n WiFi Adapter 582564-002 For use in Albania, Algeria, Andorra, Angola, Argentina, Armenia, Australia, Austria, Azerbaijan, Bahrain, Belarus, Belgium, Benin, Bermuda, Bhutan, Bolivia, Bosnia and Herzegovina, Botswana, Brazil - HP Pavilion dm4 | Maintenance and Service Guide - Page 31
Item Description Spare part number Broadcom 4313 802.11b/g/n 1x1 WiFi and 2070 Bluetooth 2.1+EDR Combo Adapter 600370-001 For use in Afghanistan, Albania, Algeria, Andorra, Angola, Antigua and Barbuda, Argentina, Armenia, Aruba, Australia, Austria, Azerbaijan, Bahamas, Bahrain, Bangladesh, - HP Pavilion dm4 | Maintenance and Service Guide - Page 32
Item (15) (16) (17) (18) (19) Description Spare part number Memory modules (PC3-10600, 1333-MHz) 4096-MB 599092-001 2048-MB 598856-001 Battery 9-cell, 100-WH (3.0-Ah) Li-ion 636631-001 6-cell, 62-WH (2.80-Ah) Li-ion 593562-001 6-cell, 55-WH (2.55-Ah) Li-ion 593554- - HP Pavilion dm4 | Maintenance and Service Guide - Page 33
Display assembly components Item (1) (2) (3) Description Display bezel Webcam module Display panel, Brightview, high-definition, 35.56 cm (14.0-in) (includes display panel cable) For use in models without WWAN For use in models with WWAN Spare part number 608209-001 615744-001 608206-001 613666- - HP Pavilion dm4 | Maintenance and Service Guide - Page 34
Item (3) (4a) (4b) (5) (6) (7) Description Display hinge cover Webcam cable Antennas and cables Display hinge cover Display bracket Display back cover Display Screw Kit (not illustrated; includes screws and screw covers) Display cable kit (not illustrated) Display cable kit for models equipped with - HP Pavilion dm4 | Maintenance and Service Guide - Page 35
Mass storage devices Item Description Spare part number (1) Optical drive (12.7 mm, SATA, fixed) DVD±RW SuperMulti DL Drive 608221-001 (2) Hard drive (include hard drive bracket) NOTE: The hard drive cable is included in the Misc Cable Kit, spare part number 608227-001. 750-GB, 7200 RPM - HP Pavilion dm4 | Maintenance and Service Guide - Page 36
Korea For use in Switzerland For use in Taiwan For use in Thailand For use in the United Kingdom and Singapore Thermal pad kit RTC battery Speaker , 8 ohm 28 Chapter 3 Illustrated parts catalog Spare part number 609939-001 609940-001 609947-001 609948-001 490371-D01 490371-011 490371-202 490371 - HP Pavilion dm4 | Maintenance and Service Guide - Page 37
490371-AD1 490371-D01 490371-D61 531993-001 537921-001 580101-001 Description RTC battery Power cord, AC, 3-pin, black, 1.83-m, for use in North Argentina Power cord, AC, 3-pin, black,1.83-m, for use in India HP un2420 Broadband Module (WWAN) Bluetooth module without cable Atheros AR9285 802.11 - HP Pavilion dm4 | Maintenance and Service Guide - Page 38
Spare part number 580101-002 582564-001 582564-002 587259-001 Description Atheros AR9285 802.11 a/b/g/n 2x2 WiFi adapter for use in Afghanistan, Albania, Algeria, Andorra, Angola, Antigua and Barbuda, Argentian, Armenia, Aruba, Australia, Austria, Azerbaijan, Bahamas, Bahrain, Barbados, Belgium, - HP Pavilion dm4 | Maintenance and Service Guide - Page 39
Kingdom, Uruguay, the US Virgin Islands, the United States, Venezuela, and Vietnam 6-cell 55-WH (2.55Ah) Li-ion battery 6-cell 62-WH (2.80-Ah) Li-ion battery Broadcom 4313AGN 802.11a/b/g/draft-n WiFi Adapter for use in Afghanistan, Albania, Algeria, Andorra, Angola, Antigua and Barbuda, Argentina - HP Pavilion dm4 | Maintenance and Service Guide - Page 40
Emirates, the United Kingdom, Uruguay, the US Virgin Islands, the United States, Uzbekistan, Vanuatu, Venezuela, Vietnam, Yemen, Zaire, Zambia, and Zimbabwe System board (includes replacement thermal material) for use in models with 512 MB of HD5450 discrete graphics memory System board (includes - HP Pavilion dm4 | Maintenance and Service Guide - Page 41
and French Canada Keyboard for use in Turkey Keyboard for use in Latin America Keyboard for use in Saudi Arabia Keyboard for use in Brazil Keyboard for use in Russia Keyboard for use in Thailand Keyboard for use in Japan Keyboard for use in Taiwan Keyboard for use in South Korea Keyboard for use in - HP Pavilion dm4 | Maintenance and Service Guide - Page 42
for use in models equipped with WWAN Webcam module System board (includes replacement thermal material) for use in models with 1 GB of HD5450 discrete graphics , 2.66-GHz, 3-MB L3 cache 9-cell, 100-WH (3.0-Ah) Li-ion battery Speaker, 8 ohm Hard drive mounting hardware 320-GB, 7200 RPM hard drive 500 - HP Pavilion dm4 | Maintenance and Service Guide - Page 43
to complete the removal and replacement procedures: ● Flat-bladed screwdriver ● Magnetic screwdriver ● Phillips P0 and P1 screwdrivers Service considerations The following sections include only at the points designated in the maintenance instructions. Preliminary replacement requirements 35 - HP Pavilion dm4 | Maintenance and Service Guide - Page 44
Cables and connectors CAUTION: When servicing the computer, be sure that cables are placed in are routed in such a way that they cannot be caught or snagged by parts being removed or replaced. Handle flex cables with extreme care; these cables tear easily. Drive handling CAUTION: Drives are fragile - HP Pavilion dm4 | Maintenance and Service Guide - Page 45
V 700 V 11,500 V 4,000 V 14,500 V 5,000 V 26,500 V 20,000 V 21,000 V 11,000 V 55% 7,500 V 3,000 V 400 V 400 V 2,000 V 3,500 V 7,000 V 5,000 V Preliminary replacement requirements 37 - HP Pavilion dm4 | Maintenance and Service Guide - Page 46
properly grounded work surface and use properly grounded tools and equipment. ● Use conductive field service tools, such as cutters, screwdrivers, and vacuums. ● When fixtures must directly contact inserting or removing connectors or test equipment. 38 Chapter 4 Removal and replacement procedures - HP Pavilion dm4 | Maintenance and Service Guide - Page 47
resistance ● Static-dissipative tables or floor mats with hard ties to the ground ● Field service kits ● Static awareness labels ● Material-handling packages ● Nonconductive plastic bags, tubes, or Floor mats Voltage protection level 1,500 V 7,500 V 5,000 V Preliminary replacement requirements 39 - HP Pavilion dm4 | Maintenance and Service Guide - Page 48
, replaced, or loosened when servicing the computer. Make special note of each screw size and location during removal and replacement. Serial number The serial number label, located in the battery bay of the computer, provides important information that you may need when contacting technical support - HP Pavilion dm4 | Maintenance and Service Guide - Page 49
Computer feet Description Rubber Feet Kit Spare part number 608228-001 The computer feet are adhesive-backed rubber pads. The feet attach to the base enclosure in the locations illustrated below. Component replacement procedures 41 - HP Pavilion dm4 | Maintenance and Service Guide - Page 50
and lift it out of the computer (3). To insert the battery, insert the rear edge of the battery into the battery bay and pivot the front edge downward until the battery is seated. The battery release latch automatically locks the battery into place. 42 Chapter 4 Removal and replacement procedures - HP Pavilion dm4 | Maintenance and Service Guide - Page 51
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 42). Remove the SIM: 1. Press in on the SIM (1). The module is partially ejected from the SIM slot. 2. Remove the SIM (2) from - HP Pavilion dm4 | Maintenance and Service Guide - Page 52
power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 42). Remove the memory module: 1. Turn the computer upside down with the front toward the slot rises away from the computer.) 44 Chapter 4 Removal and replacement procedures - HP Pavilion dm4 | Maintenance and Service Guide - Page 53
5. Remove the module (2) by pulling it away from the slot at an angle. NOTE: Memory modules are designed with a notch (3) to prevent incorrect insertion into the memory module slot. Reverse this procedure to install a memory module. Component replacement procedures 45 - HP Pavilion dm4 | Maintenance and Service Guide - Page 54
drive cover (see Hard drive on page 53). Remove the RTC battery: 1. Turn the system board upside down. 2. Release the RTC battery from the clips on the system board (1). 3. Remove the RTC battery (2). Reverse this procedure to install the RTC battery. 46 Chapter 4 Removal and replacement procedures - HP Pavilion dm4 | Maintenance and Service Guide - Page 55
Nether Antilles, Puerto Rico, St. Kitts and Nevis, St. Lucia, St. Vincent and the Grenadines, Suriname, the US Virgin Islands, and the United States Component replacement procedures 47 - HP Pavilion dm4 | Maintenance and Service Guide - Page 56
Emirates, the United Kingdom, Uruguay, the United States, the US Virgin Islands, Uzbekistan, Vanuatu, Venezuela, Vietnam, Yemen, Zaire, Zambia, and Zimbabwe 48 Chapter 4 Removal and replacement procedures - HP Pavilion dm4 | Maintenance and Service Guide - Page 57
, Uzbekistan, Vanuatu, Venezuela, Vietnam, Yemen, Zaire, Zambia, and Zimbabwe Intel® Centrino® Advanced-N + WiMAX 6250 WLAN module 619997-001 For use in the United States Component replacement procedures 49 - HP Pavilion dm4 | Maintenance and Service Guide - Page 58
unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 42). 5. Remove the memory/wireless module replace the module and then receive a warning message, remove the module to restore computer functionality, and then contact technical support through Help and Support - HP Pavilion dm4 | Maintenance and Service Guide - Page 59
WWAN module and the WLAN module are not interchangeable. Description HP un2420 Broadband Module (WWAN) Spare part number 531993-001 unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 42). 5. Remove the memory/wireless module compartment replacement procedures 51 - HP Pavilion dm4 | Maintenance and Service Guide - Page 60
4. Remove the WWAN module (3) by pulling it away from the slot at an angle. NOTE: WWAN modules are designed with a notch (4) to prevent incorrect insertion into the WWAN module slot. Reverse the above procedure to install the WWAN module. 52 Chapter 4 Removal and replacement procedures - HP Pavilion dm4 | Maintenance and Service Guide - Page 61
from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 42). 5. Remove the memory/wireless module compartment cover (see Memory module on page Disconnect the hard drive cable from the system board (1). Component replacement procedures 53 - HP Pavilion dm4 | Maintenance and Service Guide - Page 62
5. Lift the hard drive out of the hard drive bay (2). 6. If it is necessary to replace the hard drive bracket (also called the protective cover), disconnect the hard drive cable (1) from the this procedure to reassemble and install the hard drive. 54 Chapter 4 Removal and replacement procedures - HP Pavilion dm4 | Maintenance and Service Guide - Page 63
cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 42). 5. Remove the memory/wireless module compartment cover (see Memory module on page drive bezel. Press in gently until the tray is released. Component replacement procedures 55 - HP Pavilion dm4 | Maintenance and Service Guide - Page 64
slides out. 7. Press the bezel release button (1), lift the bezel at an angle (2), and remove the bezel (3). 8. If it is necessary to replace the optical drive bracket, position the optical drive with the optical drive bracket toward you. 9. Remove the two Phillips PM2.0×3.0 screws (1) that secure - HP Pavilion dm4 | Maintenance and Service Guide - Page 65
Remove the battery (see Battery on page 42). 5. Remove the memory/wireless compartment cover (see Memory module on page 44). 6. Remove the hard drive cover (see Hard drive on page 53). Remove the keyboard: 1. Turn the computer upside down with the front toward you. Component replacement procedures - HP Pavilion dm4 | Maintenance and Service Guide - Page 66
rests on the palm rest (2). 7. Release the zero insertion force (ZIF) connector to which the keyboard cable is attached and disconnect the keyboard cable (3) from the system board. 8. Remove the keyboard. Reverse this procedure to install the keyboard. 58 Chapter 4 Removal and replacement procedures - HP Pavilion dm4 | Maintenance and Service Guide - Page 67
Keyboard on page 57) Remove the top cover: 1. Turn the computer upside down with the front toward you. 2. Remove the two feet near the battery (1) and the 11 Phillips PM2.5×7.0 screws (2) that secure the top cover to the base enclosure. Two of the screws are under the feet. Component replacement - HP Pavilion dm4 | Maintenance and Service Guide - Page 68
cables. 7. Release the ZIF connector to which the power button board is connected and disconnect the cable from the system board (1). 60 Chapter 4 Removal and replacement procedures - HP Pavilion dm4 | Maintenance and Service Guide - Page 69
disconnect the cable from the system board (3). 10. Remove the top cover from the base enclosure. Reverse this procedure to install the top cover. Component replacement procedures 61 - HP Pavilion dm4 | Maintenance and Service Guide - Page 70
(see Battery on page 42). 5. Remove the following components: a. Hard drive (see Hard drive on page 53) b. Optical drive (see Optical drive on page 55) c. Keyboard (see Keyboard on page 57) d. Top cover (see board bracket (3) from the top cover. 62 Chapter 4 Removal and replacement procedures - HP Pavilion dm4 | Maintenance and Service Guide - Page 71
reinstall, place the board into the slot, and then place the bracket over it by setting the right side of bracket into the slots. Then replace the screw. Component replacement procedures 63 - HP Pavilion dm4 | Maintenance and Service Guide - Page 72
(see Battery on page 42). 5. Remove the following components: a. Hard drive (see Hard drive on page 53) b. Optical drive (see Optical drive on page 55) c. Keyboard (see Keyboard on page 57) d. Top cover (see the power button board to the top cover. 64 Chapter 4 Removal and replacement procedures - HP Pavilion dm4 | Maintenance and Service Guide - Page 73
Battery on page 42). 5. Disconnect the wireless antenna cables from the WLAN module (see WLAN module on page 47). 6. Remove the following components: a. WLAN module (see WLAN module on page 47) b. WWAN module (see WWAN module on page 51) c. Keyboard (see Keyboard on page 57) Component replacement - HP Pavilion dm4 | Maintenance and Service Guide - Page 74
secure the display assembly to the computer. CAUTION: Support the display assembly when removing the display screws in the following steps. Failure to support the display assembly can result in damage to the populate the left two holes in the hinge. 66 Chapter 4 Removal and replacement procedures - HP Pavilion dm4 | Maintenance and Service Guide - Page 75
the two Phillips PM2.0×3.0 screws (1) that secure the brackets to base enclosure, and the remove the brackets (2). 8. If it is necessary to replace any of the display assembly internal components, remove the following screw covers and screws. The display screw covers are included in the Display - HP Pavilion dm4 | Maintenance and Service Guide - Page 76
webcam cable (2) from the module, and remove the webcam. The webcam is available using spare part number 615744-001. 12. If it is necessary to replace the display panel, remove the four Phillips PM2.0×5.0 screws (1) that secure the display panel to the display enclosure. 68 Chapter 4 Removal and - HP Pavilion dm4 | Maintenance and Service Guide - Page 77
bottom of the enclosure, disconnect the display panel cable from the HP logo light cable (3), and then lift the panel from the enclosure cover screws are thicker than the other screws. 14. If it is necessary to replace the display cable, follow these steps: a. Turn the display panel upside down in - HP Pavilion dm4 | Maintenance and Service Guide - Page 78
WLAN antenna routing path through the right hinge (3). NOTE: The silver screws go on the outside of the hinges. 17. If it is necessary to replace the wireless antennas and cables, remove the adhesive strip (1) that secures each antenna to the display back cover. 18. Remove the antennas from the - HP Pavilion dm4 | Maintenance and Service Guide - Page 79
(see Battery on page 42). 5. Remove the following components: a. Hard drive (see Hard drive on page 53) b. Optical drive (see Optical drive on page 55) c. Keyboard (see Keyboard on page 57) d. Top cover ( USB board straight up (3) to remove it from the computer. Component replacement procedures 71 - HP Pavilion dm4 | Maintenance and Service Guide - Page 80
(see Battery on page 42). 5. Remove the following components: a. Hard drive (see Hard drive on page 53) b. Optical drive (see Optical drive on page 55) c. Keyboard (see Keyboard on page 57) d. Top cover (see Top the bracket from the connector (3). 72 Chapter 4 Removal and replacement procedures - HP Pavilion dm4 | Maintenance and Service Guide - Page 81
5. Remove the power connector (4) from the base enclosure. Reverse this procedure to install the power connector cable. Component replacement procedures 73 - HP Pavilion dm4 | Maintenance and Service Guide - Page 82
(see Battery on page 42). 5. Remove the following components: a. Hard drive (see Hard drive on page 53) b. Optical drive (see Optical drive on page 55) c. Keyboard (see Keyboard on page 57) d. Top cover Disconnect the cable from the system board (2). 74 Chapter 4 Removal and replacement procedures - HP Pavilion dm4 | Maintenance and Service Guide - Page 83
4. Remove the Bluetooth module and cable from the slot in the base enclosure (3), while noting the cable routing path atop the speaker (4). Reverse the above procedure to install the Bluetooth module. Component replacement procedures 75 - HP Pavilion dm4 | Maintenance and Service Guide - Page 84
adapter from the computer. 4. Remove the battery (see Battery on page 42). 5. Remove the following components: a. Optical drive (see Optical drive on page 55) b. Keyboard (see Keyboard on page 57) c. Top cover speaker assembly to the base enclosure. 76 Chapter 4 Removal and replacement procedures - HP Pavilion dm4 | Maintenance and Service Guide - Page 85
4. Lift the speaker assembly straight up (3) to remove it from the base enclosure. Reverse this procedure to install the speaker assembly. Component replacement procedures 77 - HP Pavilion dm4 | Maintenance and Service Guide - Page 86
system board, be sure that the following components are removed from the defective system board and installed on the replacement system board: ● SIM (see SIM on page 43) ● RTC battery (see RTC battery on page 46) ● Memory modules (see Memory module on page 44) ● WLAN module (see WLAN module on page - HP Pavilion dm4 | Maintenance and Service Guide - Page 87
e. Keyboard (see Keyboard on page 57) f. Top cover (see Top cover on page 59) g. Speaker assembly (see Speaker assembly on page 76) h. Display clear the base enclosure, and then remove the system board. Reverse the preceding procedure to install the system board. Component replacement procedures 79 - HP Pavilion dm4 | Maintenance and Service Guide - Page 88
kits include replacement thermal Battery on page 42). 5. Remove the following components: a. Hard drive (see Hard drive on page 53) b. WLAN module (see WLAN module on page 47) c. WWAN module (see WWAN module on page 51) d. Optical drive (see Optical drive on page 55) e. Keyboard (see Keyboard - HP Pavilion dm4 | Maintenance and Service Guide - Page 89
assembly and system board components, it may be necessary to move the fan/heat sink assembly from side to side to detach the assembly. Component replacement procedures 81 - HP Pavilion dm4 | Maintenance and Service Guide - Page 90
5 through 7 apply to computers with UMA subsystem memory on the system board. Steps 1 through 4 apply to computers with discrete subsystem memory. 82 Chapter 4 Removal and replacement procedures - HP Pavilion dm4 | Maintenance and Service Guide - Page 91
assembly and system board components, it may be necessary to move the fan/heat sink assembly from side to side to detach the assembly. Component replacement procedures 83 - HP Pavilion dm4 | Maintenance and Service Guide - Page 92
the locations for thermal material on systems with UMA graphics subsystems. Reverse this procedure to install the fan/heat sink assembly. 84 Chapter 4 Removal and replacement procedures - HP Pavilion dm4 | Maintenance and Service Guide - Page 93
(see Keyboard on page 57) f. Top cover (see Top cover on page 59) g. Speaker assembly (see Speaker assembly on page 76) h. Power connector cable (see Power connector cable on page 72) i. USB board (see USB board on page 71) j. Display assembly (see Display assembly on page 65) Component replacement - HP Pavilion dm4 | Maintenance and Service Guide - Page 94
with the triangle icon (4) embossed on the processor socket when you install the processor. Reverse this procedure to install the processor. 86 Chapter 4 Removal and replacement procedures - HP Pavilion dm4 | Maintenance and Service Guide - Page 95
turning on or restarting the computer. While the "Press the ESC key for Startup Menu" message is displayed in the lower-left corner of the screen, press f10. - or - 1. Open Setup Utility by turning on or restarting the computer. While the "Press the ESC key for Startup Menu" message is displayed - HP Pavilion dm4 | Maintenance and Service Guide - Page 96
in Setup Utility Because Setup Utility is not Windows based, it does not support the TouchPad. Navigation and selection are by keystroke. ● To choose a key for Startup Menu" message is displayed in the lower-left corner of the screen, press f10. - or - Open Setup Utility by turning on or restarting - HP Pavilion dm4 | Maintenance and Service Guide - Page 97
3. When the Setup Confirmation is displayed, press enter. 4. To save your change and exit Setup Utility, use the arrow keys to select Exit > Exit Saving Changes, and then press enter. The Setup Utility default settings go into effect when the computer restarts. NOTE: Your password, security, and - HP Pavilion dm4 | Maintenance and Service Guide - Page 98
of the Setup Utility menu items listed in this chapter may not be supported by your computer. Main menu Select System information To do this ● View information about the processor, memory size, system BIOS, and keyboard controller version (select models only). Security menu Select Administrator - HP Pavilion dm4 | Maintenance and Service Guide - Page 99
Select Fan Always On Boot Options To do this Enable/disable Fan Always On. When enabled, the computer fan will always be on. Set the following boot options: ● f10 and f12 Delay (seconds)―Set the delay for the f10 and f12 functions of Setup Utility in intervals of 5 seconds each (0, 5, 10, 15, 20). - HP Pavilion dm4 | Maintenance and Service Guide - Page 100
6 Specifications Computer specifications Dimensions Depth Width Height (front to rear) Weight (lowest weight configuration) Input power Operating voltage Operating current Temperature Operating (not writing to optical disc) 22.8 cm (8.98 in) 34.8 cm (13.70 in) 2.5 to 3.2 cm (0.98 to 1.26 in) < 2. - HP Pavilion dm4 | Maintenance and Service Guide - Page 101
35.56-cm (14.0-in) display specifications Dimensions Active diagonal size Active area Resolution Weight Contrast ratio Luminance Luminance uniformity Lifetime (1/2 luminance) Backlight Response time Surface treatment Total power consumption Viewing angle 35.56 cm (14.00 in) 309.399 x 173.952 1366 - HP Pavilion dm4 | Maintenance and Service Guide - Page 102
referring to hard drive storage capacity. Actual accessible capacity is less. Actual drive specifications may differ slightly. NOTE: Certain restrictions and exclusions apply. Contact technical support for details. 94 Chapter 6 Specifications - HP Pavilion dm4 | Maintenance and Service Guide - Page 103
CD-RW 8X DVD+R 4X DVD+RW 8X DVD-R 4X DVD-RW 2.4X DVD+R(9) 5X DVD-RAM Transfer mode CD-DA, CD+(E)G, CD-MIDI, CD-TEXT, CD-ROM, CD-ROM XA, MIXED DVD-10, DVD-18), DVD-R, DVD-RW, DVD+R, DVD +RW, DVD-RAM CD-R and CD-RW, DVD+R, DVD+RW, DVD-R, DVD-RW, DVD-RAM < 230 ms < 175 ms 2 MB 3,600 KB/sec 10,800 KB - HP Pavilion dm4 | Maintenance and Service Guide - Page 104
(I/O) ports, interrupt request (IRQ) lines, and memory addresses. If two devices require the same resource and create a device conflict, you can manually change the resource settings in Device Manager to be sure each setting is unique. CAUTION: Improperly changing resource settings can disable your - HP Pavilion dm4 | Maintenance and Service Guide - Page 105
maintain a reasonably current backup. Tools provided by the operating system and HP Recovery Manager software are designed to help you with the following tasks a program or driver (Recovery Manager software feature). This feature helps you reinstall a program or driver without performing a - HP Pavilion dm4 | Maintenance and Service Guide - Page 106
to create recovery discs, or you can purchase recovery discs for your computer from the HP Web site. Note the following guidelines before creating recovery discs: NOTE: The external > Recovery Manager > Recovery Disk Creation. 2. Follow the on-screen instructions. 98 Chapter 7 Backup and recovery - HP Pavilion dm4 | Maintenance and Service Guide - Page 107
: To copy only the active window, press alt+prt sc. To copy the entire screen, press prt sc. 3. Open a word-processing document, and then select Edit > Paste. 4. Save the document. ● You can back up your information to an optional external hard drive, a network drive, or discs. ● When backing up - HP Pavilion dm4 | Maintenance and Service Guide - Page 108
> All Programs > Maintenance > Backup and Restore. 2. Follow the on-screen instructions to set up and create a backup. NOTE: Windows includes the User Account running utilities, or changing Windows settings. Refer to Help and Support for more information. Using system restore points When you back up - HP Pavilion dm4 | Maintenance and Service Guide - Page 109
3. Click the System Protection tab. 4. Click System Restore. 5. Follow the on-screen instructions. Performing a recovery NOTE: You can recover only files that you have previously backed up. HP recommends that you use HP Recovery Manager to create a set of recovery discs (entire drive backup) as soon - HP Pavilion dm4 | Maintenance and Service Guide - Page 110
the ESC key for Startup Menu" message is displayed at the bottom of the screen. Then, press f11 while the "Press for recovery" message is displayed on the screen. 2. Click System Recovery in the Recovery Manager window. 3. Follow the on-screen instructions. 102 Chapter 7 Backup and recovery - HP Pavilion dm4 | Maintenance and Service Guide - Page 111
8 Connector pin assignments Audio-out (headphone) Pin Signal 1 Audio out, left channel 2 Audio out, right channel 3 Ground Audio-in (microphone) Pin Signal 1 Audio signal in 2 Audio signal in 3 Ground Audio-out (headphone) 103 - HP Pavilion dm4 | Maintenance and Service Guide - Page 112
External monitor Pin Signal 1 Red analog 2 Green analog 3 Blue analog 4 Not connected 5 Ground 6 Ground analog 7 Ground analog 8 Ground analog 9 +5 VDC 10 Ground 11 Monitor detect 12 DDC 2B data 13 Horizontal sync 14 Vertical sync 15 DDC 2B clock 104 Chapter 8 - HP Pavilion dm4 | Maintenance and Service Guide - Page 113
RJ-45 (network) Pin Signal 1 Transmit + 2 Transmit - 3 Receive + 4 Unused 5 Unused 6 Receive - 7 Unused 8 Unused RJ-45 (network) 105 - HP Pavilion dm4 | Maintenance and Service Guide - Page 114
HDMI Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Signal TMDS data 2+ TMDS data 2 shield TMDS data 2- TMDS data 1+ TMDS data 1shield TMDS data 1- TMDS data 0+ TMDS data 0 shield TMDS data 0- TMDS clock+ TMDS clock shield TMDS clock- CEC No connect DDC clock DDC data Ground +5V power Hot - HP Pavilion dm4 | Maintenance and Service Guide - Page 115
Universal Serial Bus Pin Signal 1 +5 VDC 2 Data - 3 Data + 4 Ground Universal Serial Bus 107 - HP Pavilion dm4 | Maintenance and Service Guide - Page 116
9 Power cord set requirements The wide range input feature of the computer permits it to operate from any line voltage from 100 to 120 volts AC or from 220 to 240 volts AC. The 3-conductor power cord set included with the computer meets the requirements for use in the country or region where the - HP Pavilion dm4 | Maintenance and Service Guide - Page 117
Requirements for specific countries or regions Country/region Accredited agency Applicable note number Australia EANSW 1 Austria OVE 1 Belgium CEBC 1 Canada CSA 2 Denmark DEMKO 1 Finland FIMKO 1 France UTE 1 Germany VDE 1 Italy IMQ 1 Japan METI 3 The Netherlands - HP Pavilion dm4 | Maintenance and Service Guide - Page 118
battery in general household waste. Follow the local laws and regulations in your area for computer battery them carefully. NOTE: Materials Disposal. This HP product contains mercury in the backlight in the .eiae.org. This section provides disassembly instructions for the display assembly. The display - HP Pavilion dm4 | Maintenance and Service Guide - Page 119
Perform the following steps to disassemble the display assembly: 1. Remove all screw covers (1) and screws (2) that secure the display bezel to the display assembly. 2. Lift up and out on the left and right inside edges (1) and the top and bottom inside edges (2) of the display bezel until the bezel - HP Pavilion dm4 | Maintenance and Service Guide - Page 120
4. Disconnect all display panel cables (1) from the display inverter and remove the inverter (2). 5. Remove all screws (1) that secure the display panel assembly to the display enclosure. 6. Remove the display panel assembly (2) from the display enclosure. 7. Turn the display panel assembly upside- - HP Pavilion dm4 | Maintenance and Service Guide - Page 121
10. Remove the display panel frame (2) from the display panel. 11. Remove the screws (1) that secure the backlight cover to the display panel. 12. Lift the top edge of the backlight cover (2) and swing it outward. 13. Remove the backlight cover. 14. Turn the display panel right-side up. Display 113 - HP Pavilion dm4 | Maintenance and Service Guide - Page 122
15. Remove the backlight cables (1) from the clip (2) in the display panel. 16. Turn the display panel upside-down. WARNING! The backlight contains mercury. Exercise caution when removing and handling the backlight to avoid damaging this component and causing exposure to the mercury. 17. Remove the - HP Pavilion dm4 | Maintenance and Service Guide - Page 123
18. Remove the backlight from the backlight frame. 19. Disconnect the display panel cable (1) from the LCD panel. 20. Remove the screws (2) that secure the LCD panel to the display rear panel. 21. Release the LCD panel (3) from the display rear panel. 22. Release the tape (4) that secures the LCD - HP Pavilion dm4 | Maintenance and Service Guide - Page 124
, 33 battery removal 42 spare part numbers 24, 34, 42 battery bay 14 battery light 11 battery release latch 14 battery, identifying 16 bays battery 14 hard 103 monitor 104 network 105 RJ-45 105 USB 107 connectors, service considerations 36 cord, power 16 D default settings, restoring 88 Diagnostics - HP Pavilion dm4 | Maintenance and Service Guide - Page 125
) 11 audio-out (headphone) 11 RJ-45 (network) 12 K keyboard product description 3 removal 57 spare part numbers 19, 33, 57 keys action 9 esc 9 fn 9 Windows applications 9 Windows logo 9 L LAN Power Saving 90 language support 90 latch, battery release 14 left TouchPad button, identifying 6 lights - HP Pavilion dm4 | Maintenance and Service Guide - Page 126
name 1 security 4 serviceability 4 wireless 3 product name 1 R recovering a program or driver 97 from the dedicated recovery partition 101 from the recovery discs 101 recovery discs 97, 98 Recovery Manager 97, 101 recovery partition 97 recovery, system 101 removal/replacement preliminaries 35 - HP Pavilion dm4 | Maintenance and Service Guide - Page 127
drive 95 system resources 96 static-shielding materials 39 supported discs 98 system board removal 78 spare part system restore points 97, 100 T thermal module, spare part number 20, 33 thermal paste, replacement 82, 84 tools required 35 top cover removal 59 spare part number 19, 33, 59 TouchPad - HP Pavilion dm4 | Maintenance and Service Guide - Page 128
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HP Pavilion dm4 Entertainment PC
Maintenance and Service Guide