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HP Elite 8300 HP Compaq Business PC Maintenance and Service Guide Elite 8300 S - Page 158

Power Switch/LED Assembly, Preparation for Disassembly, on Computer Access Panel, Front Bezel

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Power Switch/LED Assembly Description Power switch/LED assembly Spare part number 646828-001 1. Prepare the computer for disassembly (Preparation for Disassembly on page 72). 2. Remove the access panel (Computer Access Panel on page 120). 3. Remove the front bezel (Front Bezel on page 121). 4. Remove the front fan (Front Fan Assembly on page 144). 5. Disconnect the cable from the system board connector labeled PB/LED. 6. With the computer on its side, press on the tabs on the bottom of the assembly (1) to disengage the assembly from the chassis, and then rotate the bottom of the assembly upward (2) to remove it from the chassis. Figure 7-29 Removing the power switch/LED 7. Pull the assembly away from the chassis while threading the cable through the hole in front of the chassis. Power Switch/LED Assembly 147

Section	Page
Product Features	12
Standard Configuration Features	12
Convertible Minitower (CMT) Front Panel Components	14
Microtower (MT) Front Panel Components	15
Small Form Factor (SFF) Front Panel Components	16
Ultra-Slim Desktop (USDT) Front Panel Components	17
Convertible Minitower (CMT) Rear Panel Components	18
Microtower (MT) Rear Panel Components	19
Small Form Factor (SFF) Rear Panel Components	20
Ultra-Slim Desktop (USDT) Rear Panel Components	21
Serial Number Location	22
Installing and Customizing the Software	24
Installing the Windows Operating System	24
Downloading Microsoft Windows Updates	24
Installing or Upgrading Device Drivers (Windows systems)	25
Customizing the Monitor Display (Windows systems)	25
Launching Windows XP from Windows 7	25
Accessing Disk Image (ISO) Files	25
Computer Setup (F10) Utility	27
Computer Setup (F10) Utilities	27
Using Computer Setup (F10) Utilities	28
Computer Setup—File	29
Computer Setup—Storage	30
Computer Setup—Security	33
Computer Setup—Power	37
Computer Setup—Advanced	38
Recovering the Configuration Settings	40
Illustrated parts catalog	41
Convertible minitower (CMT) chassis spare parts	41
Computer system components	41
Cables	43
Misc parts	44
Drives	45
Misc boards	46
Sequential part number listing	46
Microtower (MT) chassis spare parts	49
Computer major components	49
Cables	51
Misc parts	52
Drives	53
Misc boards	54
Sequential part number listing	54
Small Form Factor (SFF) chassis spare parts	58
Computer major components	58
Cables	60
Misc parts	61
Drives	63
Misc boards	63
Sequential part number listing	64
Ultra-Slim Desktop (USDT) chassis spare parts	67
Computer major components	67
Cables	68
Misc parts	69
Drives	71
Misc boards	71
Sequential part number listing	71
Routine Care, SATA Drive Guidelines, and Disassembly Preparation	74
Electrostatic Discharge Information	74
Generating Static	74
Preventing Electrostatic Damage to Equipment	75
Personal Grounding Methods and Equipment	75
Grounding the Work Area	76
Recommended Materials and Equipment	76
Operating Guidelines	77
Routine Care	77
General Cleaning Safety Precautions	77
Cleaning the Computer Case	77
Cleaning the Keyboard	78
Cleaning the Monitor	78
Cleaning the Mouse	79
Service Considerations	79
Power Supply Fan	79
Tools and Software Requirements	79
Screws	79
Cables and Connectors	80
Hard Drives	80
Lithium Coin Cell Battery	80
SATA Hard Drives	81
SATA Hard Drive Cables	81
SATA Data Cable	81
SMART ATA Drives	81
Cable Management	81
Hard Drive Capacities	82
Removal and Replacement Procedures Convertible Minitower (CMT) Chassis	83
Preparation for Disassembly	83
Access Panel	84
Front Bezel	85
Front Bezel Security	86
Bezel Blanks	88
System Board Connections	89
Memory	90
DIMMs	90
DDR3-SDRAM DIMMs	90
Populating DIMM Sockets	91
Installing DIMMs	92
Expansion Card	93
Drives	97
Drive Positions	98
Removing a Drive from a Drive Bay	99
Installing Drives	103
Installing a 5.25-inch Drive into a Drive Bay	105
Installing a Hard Drive into an Internal Drive Bay	107
Hood Sensor	112
Front I/O, USB Assembly	113
Power Switch Assembly	115
Speaker	116
Rear Chassis Fan	117
Fan sink	118
Processor	120
Power Supply	123
System Board	124
Changing from a Minitower to a Desktop Configuration	125
Changing from a Desktop to a Minitower Configuration	127
Removal and Replacement Procedures Microtower (MT) Chassis	130
Preparation for Disassembly	130
Computer Access Panel	131
Front Bezel	132
Front Bezel Security	133
Bezel Blanks	135
Memory	136
DIMMs	136
DDR3-SDRAM DIMMs	136
Populating DIMM Sockets	136
Installing DIMMs	137
Expansion Cards	138
System Board Connections	144
Drives	146
Drive Positions	148
Removing a 5.25-inch or 3.5-inch Drive from a Drive Bay	148
Installing a 5.25-inch or 3.5-inch Drive into a Drive Bay	150
Removing a Hard Drive from a Drive Bay	152
Installing a Hard Drive into an Internal Drive Bay	152
Front Fan Assembly	155
Front I/O Assembly	157
Power Switch/LED Assembly	158
Heat sink	159
Processor	161
Speaker	164
Rear Chassis Fan	165
Power Supply	167
System Board	169
Removal and Replacement Procedures Small Form Factor (SFF) Chassis	171
Preparation for Disassembly	171
Access Panel	172
Front Bezel	173
Front Bezel Security	174
Bezel Blanks	176
Memory	177
DIMMs	177
DDR3-SDRAM DIMMs	177
Populating DIMM Sockets	177
Installing DIMMs	178
Expansion Card	180
System Board Connections	185
Drives	186
Drive Positions	186
Installing and Removing Drives	188
Removing a 5.25-inch Drive from a Drive Bay	189
Installing a 5.25-inch Drive into a Drive Bay	190
Removing a 3.5-inch Drive from a Drive Bay	192
Installing a 3.5-inch Drive into a Drive Bay	193
Removing and Replacing the Primary 3.5-inch Internal Hard Drive	195
Fan duct	198
Front Fan Assembly	199
Hood Sensor	201
Front I/O, Power Switch Assembly	202
Speaker	204
Heat sink	205
Processor	207
Power Supply	210
System Board	212
Using the Small Form Factor Computer in a Tower Orientation	214
Removal and Replacement Procedures Ultra-Slim Desktop (USDT) Chassis	215
Preparation for Disassembly	215
Access Panel	216
Front Bezel	217
Front Bezel Security	218
Bezel Blank	220
System Board Connections	221
Memory	222
SODIMMs	222
DDR3-SDRAM SODIMMs	222
Populating SODIMM Sockets	223
Installing SODIMMs	224
Front Fan	226
Optical Drive	227
Removing the Optical Drive	227
Preparing the New Optical Drive	228
Installing the New Optical Drive	229
Hard Drive	230
Optical Drive Rail	235
Card Reader	236
Speaker	238
Heat sink	239
Processor	241
WLAN Module	244
Hood Sensor	246
Graphics Board	247
System Board	249
Rear Fan	251
Antennas	252
Changing from Desktop to Tower Configuration	256
Port Cover	257
Power Supply, External	258
Troubleshooting Without Diagnostics	259
Safety and Comfort	259
Before You Call for Technical Support	259
Helpful Hints	260
Solving General Problems	262
Solving Power Problems	266
Solving Diskette Problems	268
Solving Hard Drive Problems	271
Solving Media Card Reader Problems	274
Solving Display Problems	276
Solving Audio Problems	281
Solving Printer Problems	283
Solving Keyboard and Mouse Problems	285
Solving Hardware Installation Problems	287
Solving Network Problems	288
Solving Memory Problems	291
Solving Processor Problems	293
Solving CD-ROM and DVD Problems	293
Solving USB Flash Drive Problems	296
Solving Front Panel Component Problems	297
Solving Internet Access Problems	297
Solving Software Problems	300
Contacting Customer Support	301
POST Error Messages	302
POST Numeric Codes and Text Messages	303
Interpreting POST Diagnostic Front Panel LEDs and Audible Codes	311
Password Security and Resetting CMOS	315
Resetting the Password Jumper	316
Clearing and Resetting the CMOS	317
Backup and Recovery	319
Windows 7 – Backup and Recovery	319
Backing up your information	319
Performing a recovery	321
Using the Windows recovery tools	321
Using F11	322
Using a Windows 7 operating system DVD (purchased separately)	322
Battery Replacement	324
Removing and Replacing a Removable 3.5-inch SATA Hard Drive	327
Unlocking the Smart Cover Lock	332
Smart Cover FailSafe Key	332
Using the Smart Cover FailSafe Key to Remove the Smart Cover Lock	333
Power Cord Set Requirements	335
General Requirements	335
Japanese Power Cord Requirements	335
Country-Specific Requirements	336
Specifications	337
CMT Specifications	337
MT Specifications	338
SFF Specifications	340
USDT Specifications	341