4-17
Troubleshooting
Other Functions Failure
If other functions such as the CRT switch, HDMI switch, LAN connection, external microphone, or
external speaker fail, perform the following:
1.
Check if the drive is ok.
2.
Check if the test fixture is ok.
3.
Swap the mainboard.
BIOS Problems
Forget BIOS Password
If the user forgets the BIOS password, discharge CMOS by shorting the CMOS connector.
Figure 4:13. Dischard MB CMOS
Refer to
Clearing the Password Check and BIOS Password
on page
2-23
.
Random Loss of BIOS Settings
If the computer is experiencing intermittent loss of BIOS information, perform the following:
1.
If the computer is more than one year old, replace the CMOS battery.
2.
Run a complete virus scan using up to date software to confirm the computer is virus free.
3.
If the computer is experiencing HDD or ODD BIOS information loss, disconnect and reconnect
the power and data cables between devices.
4.
If the BIOS settings are still lost, replace the cables.
Содержание AO756
Страница 1: ...AO756 V5 171 S E R V I C E G U I D E G U I D E ...
Страница 109: ...Service and Maintenance 5 14 Table 5 8 Base Door Screw Screw Name Screw Type Quantity M 2 0 x 6 0 1 ...
Страница 117: ...Service and Maintenance 5 22 4 Lift the fan by the fan cable to remove from its bay Figure 5 25 Removing the Fan ...
Страница 139: ...Service and Maintenance 5 44 4 Lift to remove the IO board from the lower case Figure 5 58 Removing the IO Board ...
Страница 147: ...Service and Maintenance 5 52 3 Lift to remove the left speaker Figure 5 70 Removing the Speakers 2 of 2 ...
Страница 151: ...Service and Maintenance 5 56 3 Lift to remove the keyboard Figure 5 76 Removing the Keyboard ...
Страница 160: ...5 65 Service and Maintenance Table 5 18 Thermal Module Screws Screw Name Screw Type Quantity M 2 0 x 3 0 4 ...
Страница 163: ...Service and Maintenance 5 68 5 Lift to remove the LCD module from the lower case Figure 5 94 Removing the LCD Module ...
Страница 170: ...5 75 Service and Maintenance 3 Lift to remove the LCD bezel Figure 5 104 Removing the LCD Bezel 3 of 3 ...
Страница 188: ...5 93 Service and Maintenance 3 Remove the main antenna from the LCD cover Figure 5 138 Removing the Main Antenna 3 of 3 ...
Страница 198: ...FRU Field Replaceable Unit List 6 6 Upper Case Assembly Figure 6 3 Upper Case Assembly Exploded Diagram 1 2 3 4 5 ...
Страница 200: ...FRU Field Replaceable Unit List 6 8 LCD Assembly Figure 6 4 LCD Assembly Exploded Diagram 1 2 3 4 5 8 9 6 7 ...
Страница 212: ...CHAPTER 7 Test Compatible Components Test Compatible Components 7 2 Microsoft Windows 7 Environment Test 7 2 ...
Страница 217: ...CHAPTER 8 Online Support Information Online Support Information 8 2 Introduction 8 2 ...
Страница 219: ......