Acer Aspire 3935, Руководство по обслуживанию

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Acer Aspire 3935 Service Guide 63
This chapter describes the procedures for performing a BIOS recovery, clearing the BIOS pasword and
unlocking the HDD. It also lists the POST error indicators and BIOS beep codes, as well general
troubleshooting instructions.
Clearing a BIOS Password
To clear a lost BIOS password (user or supervisor password) you need to short the G26 hardware gap located
near the HDD connector.
To clear a BIOS password:
1. Turn off the computer and unplug all the peripherals connected to it.
2. Unplug the power cord from the computer.
3. Remove the battery pack according to the instructions described on page 30.
4. Remove the lower case cover according to the instructions described on page 31.
5. Locate the G26 gap. It is between the HDD connector and the south bridge chip
6. Use an electrical conductivity tool to short the two contacts on the hardware gap together.
7. While resting the tool on the two contacts, plug one end of the AC adapter into the DC-in jack and plug
one end to an electrical outlet.
8. Press the power button to turn on the system.
9. After the BIOS POST, remove the tool from the hardware gap.
10. Reinstall the HDD module, battery pack, and the lower case cover.
11. Turn on the computer and press F2 during bootup to access the Setup Utility.
12. Press F9 to load the system defaults.
13. Press F10 to save the changes you made and close the Setup Utility.
H/W Gap Default Setting Function
G26 Open (normal) Short to clear the user and supervisor passwords.
Troubleshooting
Chapter 4