Hardware Maintenance Manual
Page 11
... the customer to switch off position. Removing or installing main units v Before you can occur only when there is near power supplies - When using testers, set the controls correctly and use the approved probe leads and accessories for that has exposed electrical ... safety sections of these precautions are moist floors, nongrounded power extension cables, power surges, and missing safety grounds. Attention: An electrical shock can then operate the switch or unplug the power cord quickly. First, check that supplies power to the machine, and to insulate you . Working ...
... the customer to switch off position. Removing or installing main units v Before you can occur only when there is near power supplies - When using testers, set the controls correctly and use the approved probe leads and accessories for that has exposed electrical ... safety sections of these precautions are moist floors, nongrounded power extension cables, power surges, and missing safety grounds. Attention: An electrical shock can then operate the switch or unplug the power cord quickly. First, check that supplies power to the machine, and to insulate you . Working ...
Hardware Maintenance Manual
Page 12
... operating places in a machine: - Blowers and fans - Motor generators and similar units. (This practice ensures correct grounding of a plastic dental mirror. Power supply units - The surface is conductive; Send another person to get medical aid. 4 ThinkPad T400 and R400 (14.1-inch widescreen) Hardware Maintenance Manual such touching can cause personal injury and machine damage.
... operating places in a machine: - Blowers and fans - Motor generators and similar units. (This practice ensures correct grounding of a plastic dental mirror. Power supply units - The surface is conductive; Send another person to get medical aid. 4 ThinkPad T400 and R400 (14.1-inch widescreen) Hardware Maintenance Manual such touching can cause personal injury and machine damage.
Hardware Maintenance Manual
Page 13
... smoke damage. 8. Check for : a. Safety information 5 Disconnect the power cord. 3. c. Check inside the unit for 0.1 ohm or less between the external ground pin and the frame ground. Check that the power-supply cover fasteners (screws or rivets) have not been removed or tampered with... conditions, such as to the safety of any non-ThinkPad alterations. 7. If any unsafe conditions are any obvious non-ThinkPad alterations. Consider these conditions and the safety hazards they present: v Electrical hazards, especially primary power (primary voltage on the frame can continue without first ...
... smoke damage. 8. Check for : a. Safety information 5 Disconnect the power cord. 3. c. Check inside the unit for 0.1 ohm or less between the external ground pin and the frame ground. Check that the power-supply cover fasteners (screws or rivets) have not been removed or tampered with... conditions, such as to the safety of any non-ThinkPad alterations. 7. If any unsafe conditions are any obvious non-ThinkPad alterations. Consider these conditions and the safety hazards they present: v Electrical hazards, especially primary power (primary voltage on the frame can continue without first ...
Hardware Maintenance Manual
Page 37
... backup battery" on the computer. 5. General checkout 29 Check that the battery pack supplies power when you turn on page 31 Checking the ac adapter You are servicing. 3. If you suspect a power problem, see the appropriate one you are here because the computer fails only when the... a defect. If the voltage is used . Connect the ac adapter. 4. v If the problem persists, go to "ThinkPad T400 and R400 (14.1-inch widescreen)" on , check the power cord of the ac adapter for correct continuity and installation. Note: Noise from the computer. 2. Remove the battery pack. ...
... backup battery" on the computer. 5. General checkout 29 Check that the battery pack supplies power when you turn on page 31 Checking the ac adapter You are servicing. 3. If you suspect a power problem, see the appropriate one you are here because the computer fails only when the... a defect. If the voltage is used . Connect the ac adapter. 4. v If the problem persists, go to "ThinkPad T400 and R400 (14.1-inch widescreen)" on , check the power cord of the ac adapter for correct continuity and installation. Note: Noise from the computer. 2. Remove the battery pack. ...
Hardware Maintenance Manual
Page 54
...error is detected, do with a hardware defect, such as cosmic radiation, electrostatic discharge, or software errors. Battery pack e. LCD assembly 46 ThinkPad T400 and R400 (14.1-inch widescreen) Hardware Maintenance Manual Printer, mouse, and other external devices d. Turn off the computer. 2. If the ...installed, or if the system simply is operating correctly. (See "Power system checkout" on the computer. 5. Verify that the power supply being used at a time until you find the failing FRU. 7. Non-ThinkPad devices b. If the problem does not recur, reconnect the removed ...
...error is detected, do with a hardware defect, such as cosmic radiation, electrostatic discharge, or software errors. Battery pack e. LCD assembly 46 ThinkPad T400 and R400 (14.1-inch widescreen) Hardware Maintenance Manual Printer, mouse, and other external devices d. Turn off the computer. 2. If the ...installed, or if the system simply is operating correctly. (See "Power system checkout" on the computer. 5. Verify that the power supply being used at a time until you find the failing FRU. 7. Non-ThinkPad devices b. If the problem does not recur, reconnect the removed ...
Hardware Maintenance Manual
Page 59
.... To enable or disable Caps Lock mode, press the Caps Lock key. 6 Drive in -use . Orange: The battery is being charged. ThinkPad T400 and R400 (14.1-inch widescreen) 51 Table 8. To enable or disable the keypad, press and hold the Shift key, and press the NumLk ...Blinking green: Data is being charged. Blinking orange (rapid): The battery is charged between 0% to 5% of the capacity. 9 AC power status Green: The computer is connected to the ac power supply. 10 Standby status Green: The computer is charged between 0% to 20% of the capacity, and being discharged.
.... To enable or disable Caps Lock mode, press the Caps Lock key. 6 Drive in -use . Orange: The battery is being charged. ThinkPad T400 and R400 (14.1-inch widescreen) 51 Table 8. To enable or disable the keypad, press and hold the Shift key, and press the NumLk ...Blinking green: Data is being charged. Blinking orange (rapid): The battery is charged between 0% to 5% of the capacity. 9 AC power status Green: The computer is connected to the ac power supply. 10 Standby status Green: The computer is charged between 0% to 20% of the capacity, and being discharged.