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eMachines 355 eMachines 355 Netbook Series Service Guide - Page 153

Troubleshooting, Common Problems,

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Troubleshooting Chapter 4 Common Problems 0 Use the following procedure as a guide for computer problems. NOTE: The diagnostic tests are intended to test only Acer products. Non-Acer products, prototype cards, or modified options can give false errors and invalid system responses. 1. Obtain the failing symptoms in as much detail as possible. 2. Verify the symptoms by attempting to re-create the failure by running the diagnostic test or by repeating the same operation. 3. Use the following table with the verified symptom to determine which page to go to. Symptoms (Verified) Go To Power On Issue No Display Issue LCD Failure Page 126 Page 127 Page 129 Internal Keyboard Failure TouchPad Failure Internal Speaker Failure Page 129 Page 130 Page 130 Internal Microphone Failure WLAN Failure Thermal Unit Failure Page 132 Page 134 Page 137 Other Functions Failure Intermittent Failures Undermined Failures Page 138 Page 139 Page 139 4. If the Issue is still not resolved, see "Online Support Information" on page 205. Chapter 4 145

Section	Page
System Specifications	9
Features	9
System Block Diagram	13
DDR2	13
DDR3	14
Your Notebook Tour	15
Top View	15
Closed Front View	16
Rear View	16
Left View	16
Right View	17
Bottom and Rear View	18
Touchpad Basics	19
Using the Keyboard	20
Lock Keys and Embedded Numeric Keypad	20
Windows Keys	21
Hot Keys	22
Using the communication key	24
Special Key	24
Hardware Specifications and Configurations	25
System Utilities	37
BIOS Setup Utility	37
Navigating the BIOS Utility	37
Information	38
Main	39
Security	40
Boot	44
Exit	45
BIOS Flash Utility	46
DOS Flash Utility	47
WinFlash Utility	49
Remove HDD/BIOS Password Utilities	50
Miscellaneous Utilities	52
Machine Disassembly and Replacement	57
Disassembly Requirements	57
General Information	58
Pre-disassembly Instructions	58
Disassembly Process	58
External Module Disassembly Process	59
External Modules Disassembly Flowchart	59
Removing the Battery Pack	61
Removing the SD Dummy Card	62
Removing the 3G Card	63
Removing the Keyboard	64
Removing the Lower Door	66
Removing the DIMM Module	68
Removing the HDD Module	69
Removing the 3G Module	72
Removing the WLAN Module	74
Main Unit Disassembly Process	76
Main Unit Disassembly Flowchart	76
Removing the Upper Cover	77
Removing the Button Board	81
Removing the LED Board	83
Removing the Bluetooth Module	84
Removing the RTC Battery	86
Removing the Speaker Module	87
Removing the Mainboard	89
Removing the Thermal Module	94
Removing the LCD Module	96
LCD Module Disassembly Process	99
LCD Module Disassembly Flowchart	99
Removing the LCD Bezel	100
Removing the Camera Module	102
Removing the LCD Panel	103
Removing the Microphone Module	106
Removing the LCD Brackets	107
Removing the 3G and WLAN Antennas	108
LCD Module Reassembly Procedure	110
Replacing the 3G and WLAN Antennas	110
Replacing the LCD Brackets	113
Replacing Microphone Module	114
Replacing the LVDS Cable	116
Replacing the CCD Module	118
Replacing the LCD Bezel	119
Main Module Reassembly Procedure	121
Replacing the LCD Module	121
Replacing the Thermal Module	124
Replacing the Mainboard	126
Replacing the Speakers	131
Replacing the RTC Battery	132
Replacing the Bluetooth Module	133
Replacing the LED Board	134
Replacing the Button Board	135
Replacing the Upper Cover	137
Replacing the WLAN Module	140
Replacing the 3G Module	142
Replacing the HDD Module	144
Replacing the DIMM Module	147
Replacing the Lower Cover	148
Replacing the Keyboard	149
Replacing the 3G Card	150
Replacing the SD Dummy Card	151
Replacing the Battery	152
Troubleshooting	153
Common Problems	153
Power On Issue	154
No Display Issue	155
Random Loss of BIOS Settings	156
LCD Failure	157
Built-In Keyboard Failure	158
TouchPad Failure	159
Internal Speaker Failure	159
Internal Microphone Failure	161
HDD Not Operating Correctly	162
USB Failure	163
Wireless Function Failure	164
3G Function Failure	165
Cosmetic Failure	166
Thermal Unit Failure	167
External Mouse Failure	168
Other Failures	168
Intermittent Problems	169
Undetermined Problems	169
Post Codes	170
Sec:	170
Memory:	170
BDS & Specific action:	171
Each PEIM entry point used in 80_PORT	172
Each Driver entry point used in 80_PORT	172
Each SmmDriver entry point used in 80_PORT	175
Jumper and Connector Locations	177
Mainboard Top View	177
Mainboard Bottom View	178
Clearing Password Check and BIOS Recovery	179
Clearing Password Check	179
BIOS Recovery by Crisis Disk	180
FRU (Field Replaceable Unit) List	183
Exploded Diagrams	184
Main Assembly	184
Logic Lower Assembly	185
Logic Upper Assembly	186
LCD Assembly	187
FRU List	188
Screw List	195
Model Definition and Configuration	197
eMachines 355	197
Test Compatible Components	209