Acer KB.I100A.022 Technical Information Page 115
- Page / 228
- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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Chapter 4 105
No Display Issue
If the Display doesn’t work, perform the following actions one at a time to correct the problem. Do not replace
non-defective FRUs:
No POST or Video
If the POST or video doesn’t display, perform the following actions one at a time to correct the problem.
1. Make sure that the internal display is selected. On this notebook model, switching between the internal
display and the external display is done by pressing Fn+F5. Reference Product pages for specific model
procedures.
2. Make sure the computer has power by checking at least one of the following occurs:
• Fans start up
• Status LEDs light up
If there is no power, see “Power On Issue” on page 104.
3. Drain any stored power by removing the power cable and battery and holding down the power button for
10 seconds. Reconnect the power and reboot the computer.
4. Connect an external monitor to the computer and switch between the internal display and the external
display is by pressing Fn+F5 (on this model).
If the POST or video appears on the external display, see “LCD Failure” on page 107.
5. Disconnect power and all external devices including port replicators or docking stations. Remove any
memory cards and CD/DVD discs. Restart the computer.
If the computer boots correctly, add the devices one by one until the failure point is discovered.
6. Reseat the memory modules.
7. Remove the drives (see “Disassembly Process” on page 40).
8. If the Issue is still not resolved, see “Online Support Information” on page 213.
Power On? trouble shooting
Replace
Ext. DDR RAM
module
No
LCD panel/cable ok?
Connect
No
Replace LCD
panel/cable
Ex t. DDRRAM
connected?
Ex t. DDRRAM
module OK?
START
No
go to no power
step
No
Connect it well
it well
No
module well
LCD cable well
connected?
Replace
M/B
- NAV50 Series 1
- Service Guide 1
- Revision History 2
- Copyright 3
- Disclaimer 3
- Conventions 4
- Table of Contents 10
- System Specifications 11
- Communication 12
- Privacy control 12
- Special keys and controls 12
- I/O interface 12
- Environment 13
- System Block Diagram 14
- Your Acer Notebook tour 15
- Closed Front View 16
- Left View 16
- Right View 17
- Rear and Base View 18
- Indicators 19
- TouchPad Basics 20
- Using the Keyboard 21
- Windows Keys 22
- Hot Keys 23
- Special Keys 24
- 20 Chapter 1 30
- System Utilities 31
- Information 32
- Security 34
- Setting a Password 35
- Removing a Password 35
- Changing a Password 36
- Chapter 2 27 37
- BIOS Flash Utility 39
- DOS Flash Utility 40
- Chapter 2 31 41
- WinFlash Utility 42
- Miscellaneous Utilities 45
- Using the LAN MAC Utility 46
- Chapter 2 37 47
- 38 Chapter 2 48
- Disassembly Requirements 49
- Chapter 3 49
- General Information 50
- Removing the Battery Pack 52
- Removing the HDD Module 53
- Removing the DIMM Module 55
- 46 Chapter 3 56
- 5. Remove the DIMM module 56
- Removing the WLAN Module 57
- 48 Chapter 3 58
- Removing the Back Cover 59
- Main Unit Disassembly Process 60
- Chapter 3 51 61
- I/O Board M2*3 1 86.SAS02.001 61
- Mainboard M2*3 1 86.SAS02.001 61
- Step Screw Quantity Part No 61
- Removing the Keyboard 62
- Chapter 3 53 63
- Removing the Upper Cover 64
- 56 Chapter 3 66
- Removing the Touchpad Board 67
- Removing the LED Board 68
- Removing the Bridge Board 69
- Removing the Bluetooth Module 70
- Removing the Speaker Module 71
- 62 Chapter 3 72
- Removing the I/O Board 73
- 64 Chapter 3 74
- Removing the Mainboard 75
- Removing the Thermal Module 77
- 68 Chapter 3 78
- Removing the LCD Module 79
- Removing the LCD Bezel 82
- Removing the Camera Board 83
- Removing the LCD Panel 84
- Removing the Microphone Set 85
- Removing the WLAN Antennas 86
- Chapter 3 77 87
- Removing the LCD Brackets 88
- Chapter 3 79 89
- Replacing the LCD Brackets 90
- Chapter 3 81 91
- Replacing the WLAN Antennas 92
- Replacing the Microphone Set 93
- Replacing the LCD Panel 94
- Replacing the Camera Board 95
- Replacing the LCD Bezel 96
- Replacing the LCD Module 97
- 88 Chapter 3 98
- Replacing the Thermal Module 99
- Replacing the Mainboard 100
- Replacing the I/O Board 101
- Replacing the Speaker Module 102
- Replacing the Bridge Board 103
- Replacing the LED Board 104
- Replacing the Touchpad Board 104
- Chapter 3 95 105
- Replacing the Upper Cover 106
- Chapter 3 97 107
- Replacing the Keyboard 108
- Replacing the WLAN Module 109
- Replacing the DIMM Module 109
- Replacing the Battery Pack 112
- Troubleshooting 113
- Power On Issue 114
- No Display Issue 115
- Random Loss of BIOS Settings 116
- LCD Failure 117
- Built-In Keyboard Failure 117
- TouchPad Failure 118
- Internal Speaker Failure 119
- Internal Microphone Failure 121
- HDD Not Operating Correctly 122
- USB Failure (Rightside) 123
- 114 Chapter 4 124
- 3G Function Test Failure 125
- Switch Failure 126
- Thermal Units Failure 127
- Power Button Failure 127
- External Mouse Failure 128
- Other Failures 128
- Intermittent Problems 129
- Undetermined Problems 129
- Motherboard CMOS Discharge 130
- POST Code Reference Tables 131
- BDS & Specific action: 132
- Mainboard Top View 137
- Chapter 5 137
- Mainboard Bottom View 138
- Button Board 139
- LED Board 140
- I/O Board Top View 141
- I/O Board Bottom View 142
- Clearing Password Check 143
- BIOS Recovery by Crisis Disk 144
- Chapter 6 145
- NAV50 Exploded Diagrams 146
- Rear Assembly 147
- Upper Cover Assembly 148
- NAV50 FRU List 149
- 140 Chapter 6 150
- Chapter 6 141 151
- 142 Chapter 6 152
- Chapter 6 143 153
- 144 Chapter 6 154
- Screw List 155
- Appendix A 156
- 147 Appendix A 157
- Appendix A 148 158
- 149 Appendix A 159
- Appendix A 150 160
- 151 Appendix A 161
- Appendix A 152 162
- 153 Appendix A 163
- Appendix A 154 164
- 155 Appendix A 165
- Appendix A 156 166
- 157 Appendix A 167
- Appendix A 158 168
- 159 Appendix A 169
- Appendix A 160 170
- 161 Appendix A 171
- Appendix A 162 172
- 163 Appendix A 173
- Appendix A 164 174
- 165 Appendix A 175
- Appendix A 166 176
- 167 Appendix A 177
- Appendix A 168 178
- 169 Appendix A 179
- Appendix A 170 180
- 171 Appendix A 181
- Appendix A 172 182
- 173 Appendix A 183
- Appendix A 174 184
- 175 Appendix A 185
- Appendix A 176 186
- 177 Appendix A 187
- Appendix A 178 188
- 179 Appendix A 189
- Appendix A 180 190
- 181 Appendix A 191
- Appendix A 182 192
- 183 Appendix A 193
- Appendix A 184 194
- 185 Appendix A 195
- Appendix A 186 196
- 187 Appendix A 197
- Appendix A 188 198
- 189 Appendix A 199
- Appendix A 190 200
- 191 Appendix A 201
- Appendix A 192 202
- 193 Appendix A 203
- Appendix A 194 204
- 195 Appendix A 205
- Appendix A 196 206
- 197 Appendix A 207
- Appendix A 198 208
- 199 Appendix A 209
- Appendix A 200 210
- 201 Appendix A 211
- Appendix A 202 212
- 203 Appendix A 213
- Appendix A 204 214
- 205 Appendix A 215
- Appendix A 206 216
- 207 Appendix A 217
- Appendix A 208 218
- Test Compatible Components 219
- Windows Environment Test 220
- 212 Appendix B 222
- Online Support Information 223
- 214 Appendix C 224
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