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HP 550 HP 550 Notebook PC - Maintenance and Service Guide - Page 36

Spare part, number, Description, Keyboard for use in Taiwan

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Spare part number Description 495398-001 Base enclosure (includes rubber feet) 495399-001 Top cover (includes TouchPad board and cable, and TouchPad button board and cable) 495400-001 Keyboard for use in the United States 495400-031 Keyboard for use in the United Kingdom 495400-041 Keyboard for use in Germany 495400-051 Keyboard for use in France 495400-061 Keyboard for use in Italy 495400-071 Keyboard for use in Spain 495400-081 Keyboard for use in Denmark 495400-091 Keyboard for use in Norway 495400-121 Keyboard for use in French Canada 495400-131 Keyboard for use in Portugal 495400-141 Keyboard for use in Turkey 495400-161 Keyboard for use in Latin America 495400-171 Keyboard for use in Saudi Arabia 495400-181 Keyboard for use in Belgium 495400-201 Keyboard for use in Brazil 495400-211 Keyboard for use in Hungary 495400-221 Keyboard for use in the Czech Republic 495400-231 Keyboard for use in Slovakia 495400-251 Keyboard for use in Russia 495400-281 Keyboard for use in Thailand 495400-291 Keyboard for use in Japan 495400-AB1 Keyboard for use in Taiwan 495400-AD1 Keyboard for use in South Korea 495400-B31 Keyboard for use in the Netherlands 495400-B71 Keyboard for use in Sweden and Finland 495400-BA1 Keyboard for use in Slovenia 495400-BB1 Keyboard for use in Israel 495400-BG1 Keyboard for use in Switzerland 495400-DD1 Keyboard for use in Iceland 495400-DJ1 Keyboard for use in Greece 495402-001 Display enclosure (includes 2 WLAN antenna transceivers and cables) 495408-001 Logo Kit 28 Chapter 3 Illustrated parts catalog

Section	Page
Product description	9
External component identification	14
Top components	14
TouchPad	14
Buttons, lights, and speaker	15
Keys	16
Front components	17
Right-side components	18
Left-side components	19
Bottom components	20
Wireless antennae (select models only)	21
Illustrated parts catalog	22
Serial number location	22
Computer major components	23
Plastics Kit	29
Cable Kit	30
Mass storage devices	31
Miscellaneous parts	32
Sequential part number listing	33
Removal and replacement procedures	38
Preliminary replacement requirements	38
Tools required	38
Service considerations	38
Plastic parts	38
Cables and connectors	39
Drive handling	39
Grounding guidelines	40
Electrostatic discharge damage	40
Packaging and transporting guidelines	41
Workstation guidelines	41
Equipment guidelines	42
Unknown user password	43
Component replacement procedures	44
Serial number	44
Computer feet	45
Battery	46
Hard drive	47
WLAN module	49
Memory module	52
Optical drive	53
Switch cover	54
Keyboard	57
Speaker	60
Display lid switch module	61
Display assembly	62
Top cover	67
TouchPad board and TouchPad button board	70
Bluetooth module	72
System board	73
Fan	77
Heat sink	79
Processor	81
Modem module	83
RTC battery	85
ExpressCard assembly	86
Computer Setup	88
Starting Computer Setup	88
Using Computer Setup	89
Navigating and selecting in Computer Setup	89
Restoring factory settings in Computer Setup	89
Computer Setup menus	90
File menu	90
Security menu	91
Diagnostics menu	91
System Configuration menu	92
Specifications	94
Computer specifications	94
15.4-inch, WXGA display specifications	95
Hard drive specifications	96
DVD±RW and CD-RW Double-Layer Combo Drive specifications	97
DVD/CD-RW Combo Drive specifications	98
System DMA specifications	99
System interrupt specifications	100
System I/O address specifications	101
System memory map specifications	103
Screw listing	104
Phillips PM2.0×5.0 captive screw	105
Phillips PM2.5×12.0 captive screw	106
Phillips PM3.0×4.0 screw	107
Phillips PM2.5×4.0 screw	108
Slotted Torx ST8M2.5×7.0 screw	109
Phillips PM2.0×4.0 screw	111
Torx T8M2.5×9.0 screw	113
Torx T8M2.5×3.0 broad-head screw	114
Torx T8M2.5×4.0 screw	115
Phillips PM2.0×2.0 broad-head screw	117
Torx T8M2.5×6.0 screw	118
Phillips PM2.0×6.0 screw	119
Torx T8M2.0×4.0 screw	120
Phillips PM2.5×7.0 screw	121
Phillips PM2.5×7.0 captive screw	122
Phillips PM2.5×10.0 captive screw	123
Phillips PM2.0×8.0 screw	124
Backup and recovery	125
Backup and recovery in Windows Vista	126
Overview	126
Backing up your information	126
Performing a recovery	127
Using the Windows recovery tools	127
Using f11	128
Using a Windows Vista operating system DVD (purchased separately)	128
Backup and Recovery in Windows XP	130
Overview	130
Backing up your information	130
Performing a recovery	131
Recovering your information	131
Recovering the operating system and programs	131
Connector pin assignments	132
Audio-out (headphone)	132
Audio-in (microphone)	132
External monitor	133
RJ-11 (modem)	134
RJ-45 (network)	135
Universal Serial Bus	135
Power cord set requirements	136
Requirements for all countries and regions	136
Requirements for specific countries and regions	137
Recycling	138
Battery	138
Display	138