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HP Dv71270us Service Guide - Page 58

Component replacement procedures, Service tag - problems

UPC - 884420712770

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Component replacement procedures This chapter provides removal and replacement procedures. There are as many as 115 screws, in 10 different sizes, that must be removed, replaced, or loosened when servicing the computer. Make special note of each screw size and location during removal and replacement. Service tag The service tag, affixed to the bottom of the computer, provides information that may be needed when troubleshooting system problems. The service tag provides the following information: (1) Product name: This is the product name affixed to the front of the computer. (2) Serial number (s/n): This is an alphanumeric identifier that is unique to each product. (3) Part number/Product number (p/n): This number provides specific information about the product's hardware components. The part number helps a service technician to determine what components and parts are needed. (4) Model description: This is the number needed to locate documents, drivers, and support for the computer. (5) Warranty period: Describes the duration of the warranty period for the computer. 50 Chapter 4 Removal and replacement procedures

Section	Page
Product description	9
External component identification	15
Top components	15
Display components	15
Buttons, fingerprint reader, and speakers	17
Keys	19
TouchPad	20
Front components	21
Rear components	22
Right-side components	22
Left-side components	23
Bottom components	24
Illustrated parts catalog	25
Service tag	25
Computer major components	26
Display assembly components	35
AntiGlare display assembly spare parts	35
BrightView display assembly spare parts	37
Plastics Kit	39
Cable Kit	40
Mass storage devices	41
Miscellaneous parts	42
Sequential part number listing	43
Removal and replacement procedures	52
Preliminary replacement requirements	52
Tools required	52
Service considerations	52
Plastic parts	52
Cables and connectors	53
Drive handling	53
Grounding guidelines	54
Electrostatic discharge damage	54
Packaging and transporting guidelines	55
Workstation guidelines	55
Equipment guidelines	56
Unknown user password	57
Component replacement procedures	58
Service tag	58
Computer feet	59
Battery	59
Webcam/microphone module	61
Optical drive	62
Hard drive	64
TV tuner module	66
RTC battery	68
WLAN module	69
Memory module	72
Switch cover	74
Keyboard	76
Bluetooth module	79
Speaker assembly	80
Display assembly	81
Top cover	90
Fingerprint reader board	93
TouchPad on/off button board	94
TouchPad button board	95
Bluetooth module cable	96
Modem module	98
System board	99
Audio/infrared board	102
USB board	103
Fan	104
Subwoofer	105
Power connector cable	107
Modem module cable	108
TV tuner module cable	109
Heat sink	110
Processor	114
Setup Utility	116
Starting the Setup Utility	116
Using the Setup Utility	117
Changing the language of the Setup Utility	117
Display system information	117
Restoring default settings in the Setup Utility	118
Exiting the Setup Utility	118
Setup Utility menus	119
Main menu	119
Security menu	119
System Configuration menu	119
Diagnostics menu	120
Specifications	121
Computer specifications	121
17.0-inch, SXGA+ display specifications	122
17.0-inch WXGA display specifications	123
Hard drive specifications	124
Blu-ray Disc ROM Drive with SuperMulti DVD±R/RW Double-Layer	125
DVD±RW and CD-RW SuperMulti Double-Layer Combo Drive specifications	126
System DMA specifications, AMD	127
System DMA specifications, Intel	127
System interrupt specifications, AMD with graphics subsystems with discrete memory	128
System interrupt specifications, AMD with graphics subsystems with UMA memory	129
System interrupt specifications, Intel	130
System I/O address specifications, AMD	131
System I/O address specifications, Intel	133
System memory map specifications, AMD with graphics subsystems with discrete memory	135
System memory map specifications, AMD with graphics subsystems with UMA memory	136
System memory map specifications, Intel	137
Screw listing	138
Phillips PM2.5×6.0 captive screw	138
Phillips PM2.5×5.0 screw	139
Phillips PM2.0×4.0 screw	140
Phillips PM2.5×4.0 screw	143
Phillips PM3.0×4.0 screw	148
Phillips PM2.5×13.0 captive screw	149
Phillips PM2.0×3.0 broad-head screw	151
Phillips PM2.5×6.0 screw	152
Phillips PM2.5×4.0 broad-head screw	154
Phillips PM2.0×10.0 captive screw	155
Backup and Recovery	157
Recovering system information	157
Creating recovery discs	158
Backing up your information	159
When to back up	159
Backup suggestions	159
Using system restore points	159
When to create restore points	160
Create a system restore point	160
Restore to a previous date and time	160
Performing a recovery	161
Recovering from the recovery discs	161
Recovering from the dedicated recovery partition (select models only)	161
Connector pin assignments	162
1394	162
Audio-in (microphone)	163
Audio-out (headphone)	163
External monitor	164
HDMI	165
RJ-11 (modem)	166
RJ-45 (network)	166
Universal Serial Bus	167
Power cord set requirements	168
Requirements for all countries or regions	168
Requirements for specific countries or regions	169
Recycling	170
Battery	170
Display	170

Match case Limit results 1 per page

Component replacement procedures

This chapter provides removal and replacement procedures.

There are as many as 115 screws, in 10 different sizes, that must be removed, replaced, or loosened

when servicing the computer. Make special note of each screw size and location during removal and

replacement.

Service tag

The service tag, affixed to the bottom of the computer, provides information that may be needed when

troubleshooting system problems. The service tag provides the following information:

(1)

Product name: This is the product name affixed to the front of the computer.

(2)

Serial number (s/n): This is an alphanumeric identifier that is unique to each product.

(3)

Part number/Product number (p/n): This number provides specific information about the product's

hardware components. The part number helps a service technician to determine what components and

parts are needed.

(4)

Model description: This is the number needed to locate documents, drivers, and support for the

computer.

(5)

Warranty period: Describes the duration of the warranty period for the computer.

Chapter 4

Removal and replacement procedures