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eMachines E644G eMachines E644 and E644G Series Serivce Guide - Page 170

Clear CMOS Jumper, BIOS Recovery by Crisis Disk, BIOS Recovery Boot Block

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Clear CMOS Jumper 0 Figure 5-6. CMOS Jumper Table 5-5. CMOS Jumper Item R582 Clear CMOS Jumper Description BIOS Recovery by Crisis Disk 0 BIOS Recovery Boot Block 0 BIOS Recovery Boot Block is a special block of BIOS. It is used to boot up the system with minimum BIOS initialization. Users can enable this feature to restore the BIOS firmware to a successful one once the previous BIOS flashing process failed. BIOS Recovery Hot key 0 The system provides a function hot key, , for enable BIOS Recovery process when system is powered on during BIOS POST. To use this function, it is strongly recommended to have the AC adapter and Battery present. If this function is enabled, the system will force the BIOS to enter a special BIOS block, called Boot Block. 5-8 Jumper and Connector Locations

Section	Page
eMachines E644/E644G Service Guide	1
Table of Contents	5
Chapter 1: Hardware Specifications	11
Table of Contents	12
Features	15
Operating System	15
Platform	15
System Memory	15
Display	15
Audio Subsystem	15
Graphics	15
Storage Subsystem	16
Privacy Control	16
Optical Media Drive	16
Communication	17
Dimension and Weight	17
Power Adapter and Battery	17
Special Keys and Controls	17
I/O Ports	18
Optional Items	18
Warranty	18
Software	18
Environment	19
Notebook Tour	20
Top View	20
Closed Front View	22
Rear View	23
Left View	24
Right View	25
Base View	26
Touchpad Basics	27
Using the Keyboard	28
Windows Keys	29
Hotkeys	30
Specification Tables	33
Computer specifications	33
Processor	34
CPU Fan True Value Table (TJ100-CPU/UMA)	35
CPU Fan True Value Table (TJ100-CPU/SG)	35
System Memory	36
Video Interface	36
BIOS	37
Keyboard	38
Hard Disk Drive (AVL components)	39
Hard Disk Drive (AVL components) (Continued)	40
LCD Inverter (not available with this model)	42
Display Supported Resolution (LCD Supported Resolution)	43
Display Supported Resolution (GPU Supported Resolution)	43
3G Card (not available in this model)	45
Audio Interface	45
Battery	47
VRAM	47
USB Port	47
AC Adapter	48
Card Reader	48
System DMA Specification	49
Chapter 2: System Utilities	53
Table of Contents	54
BIOS Setup Utility	55
Navigating the BIOS Utility	55
BIOS	56
Information	56
Main	58
Security	60
Boot	64
Exit	65
BIOS Flash Utilities	66
DOS Flash Utility	67
WinFlash Utility	69
Remove HDD/BIOS Password Utilities	70
Removing BIOS Passwords	72
Cleaning BIOS Passwords	74
Miscellaneous Tools	75
Using Boot Sequence Selector	75
Using DMITools	76
Using the LAN MAC EEPROM Utility	77
Crisis Disk Recovery	78
Chapter 3: Machine Maintenance Procedures	81
Table of Contents	82
Introduction	85
General Information	85
Recommended Equipment	85
Maintenance Flowchart	86
Getting Started	87
Battery Pack Removal	88
Battery Pack Installation	88
Dummy Card Removal	89
Dummy Card Installation	89
Keyboard Removal	90
Keyboard Installation	91
ODD (Optical Disk Drive) Module Removal	92
ODD Module Installation	93
Base Door Removal	94
Base Door Installation	94
DIMM (Dual In-line Memory Module) Module Removal	95
DIMM Module Installation	96
WLAN (Wireless Local Area Network) Board Removal	97
WLAN Board Installation	97
RTC Battery Removal	98
RTC Battery Installation	98
HDD (Hard Disk Drive) Module Removal	99
HDD Module Installation	100
Upper Cover Removal	101
Upper Cover Installation	103
Speaker Removal	104
Speaker Installation	105
Power Board Removal	106
Power Board Installation	106
Touchpad Removal	107
Touchpad Installation	107
USB Board Removal	108
USB Board Installation	109
ODD Board Removal	110
ODD Board Installation	110
Bluetooth Board Removal	111
Bluetooth Board Installation	111
Mainboard Removal	112
Mainboard Installation	114
Fan Removal	115
Fan Installation	115
Heatsink Removal	116
Heatsink Installation	117
LCD (Liquid Crystal Display) Module Removal	119
LCD Module Installation	120
DC-IN Cable Removal	121
DC Cable Installation	122
LCD Bezel Removal	123
LCD Bezel Installation	125
Camera Module Removal	126
Camera Module Installation	127
LCD Panel Removal	128
LCD Panel Installation	129
LCD Bracket Removal	130
LCD Bracket Installation	130
LVDS Cable Removal	131
LVDS Cable Installation	132
Microphone Set Removal	133
Microphone Set Installation	133
WLAN Antenna Removal	134
WLAN Antenna Installation	134
Chapter 4: Troubleshooting	135
Table of Contents	136
Introduction	137
General Information	137
Power On Issues	138
No Display Issues	139
LCD Failure	141
Keyboard Failure	142
Touchpad Failure	143
Internal Speaker Failure	144
Microphone Failure	146
USB Failure	147
Wireless Failure	148
Bluetooth Failure	149
Card Reader Failure	150
Thermal Module Failure	151
Cosmetic Failure	152
Other Functions Failure	153
Intermittent Problems	154
Undetermined Problems	154
Post Codes	155
Chapter 5: Jumper and Connector Locations	163
Table of Contents	164
Mainboard Jumper and Connector Locations	165
USB Board Jumper and Connector Locations	167
Power Board Jumper and Connector Locations	168
Clearing Password Check and BIOS Recovery	169
Clearing Password Check	169
Clear CMOS Jumper	170
BIOS Recovery by Crisis Disk	170
Chapter 6: FRU (Field Replaceable Unit) List	173
Table of Contents	174
Exploded Diagrams	176
FRU List	178
Screw List	190
Chapter 7: Model Definition and Configuration	191
Table of Contents	192
eMachines E644	193
eMachines E644G	198
Chapter 8: Test Compatible Components	201
Table of Contents	202
Microsoft® Windows® 7 Environment Test	204
Chapter 9: Online Support Information	213
Table of Contents	214
Introduction	215