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Important
If the following symptoms are present, they may
indicate damage caused by non-warranted activity:
Missing parts may be a symptom of unauthorized
service or modification.
HDD spindles can become noisy if subjected to
excessive force or by being dropped.
How to Disable the Power-On Password:
To clear a password from the system, first identify the
password switch by referring to “Switch Locations” on
page 68, then follow the steps below.
1. Power-off the computer.
2. Unplug the AC Adapter and remove the main battery.
3. Remove the keyboard and thermal plate. See
“Keyboard” on page 41 and “Thermal Plate/CPU” on
page 42.
4. Move the switch from Enable to Disable to bypass the
password.
Note: There is one microswitch used to disable the
password. After removing the thermal plate, locate
SW2 (a 4-bit switch) near the lower-left corner of the
CPU socket. The second bit switch (counting from
the lowest side) is the password enable/disable
switch. Turning the switch to the left is enable; to the
right is disable.
5. Plug the AC Adapter, turn on the system, then press
F2 while the ThinkPad logo is being displayed to
enter the BIOS Utility.
Note: If your customer forgot the password, enter
System Security and set Power On Password setting
to [None] to clear password.
6. Save, then exit from the BIOS Utility.
7. Power off.
8. Unplug the power cable or battery.
9. Move the password switch from Disable to Enable.
Note: To reinstall the password, the user must enter
a password in the BIOS Utility.
Checkout Guide
Use the following procedure as a guide for computer
problems.
Note: The diagnostic tests are intended to test only IBM
products. Non-IBM 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.
ThinkPad 310, 310D, 310E, 310ED (2600)
3
Summary of Contents for ThinkPad 310
Page 3: ......
Page 9: ...vi IBM Mobile Systems ThinkPad 310 D E ED HMM ...
Page 64: ...Side View Hinge Cover ThinkPad 310 310D 310E 310ED 2600 39 ...
Page 81: ...Speaker and Cover Switch Cables 56 IBM Mobile Systems ThinkPad 310 D E ED HMM ...
Page 84: ...PCMCIA Door and PCMCIA Door Spring ThinkPad 310 310D 310E 310ED 2600 59 ...
Page 88: ...Keyboard Connector Board ThinkPad 310 310D 310E 310ED 2600 63 ...
Page 91: ...Bottom View 1 DIMM door 66 IBM Mobile Systems ThinkPad 310 D E ED HMM ...
Page 95: ...310 System Unit Parts Listing 70 IBM Mobile Systems ThinkPad 310 D E ED HMM ...
Page 96: ...310D System Unit Parts Listing ThinkPad 310 310D 310E 310ED 2600 71 ...
Page 102: ...310E System Unit Parts Listing ThinkPad 310 310D 310E 310ED 2600 77 ...
Page 103: ...310ED System Unit Parts Listing 78 IBM Mobile Systems ThinkPad 310 D E ED HMM ...
Page 107: ...310E 310ED LCD Unit Parts Listing 82 IBM Mobile Systems ThinkPad 310 D E ED HMM ...
Page 110: ...310ED 2600 Bxx Dxx System Unit Parts Listing ThinkPad 310 310D 310E 310ED 2600 85 ...
Page 121: ...IBM Part Number 05L1935 Printed in U S A Sð5L 1935 ðð ...