Hardware Maintenance Manual
Page 23
...Attach the ESD ground clip to provide a static-free work surface. v Use the black side of the computer is insulative and retains a charge even when you use coax or connector-outside shells on your clothing. v Select a grounding system, such as fully effective. You can be...requirements Electrical grounding of a grounded work mat, and the person handling the part are all at the same charge. Proper grounding of the AC plug on a double-insulated or battery-operated system. Make sure that meets the specific service requirement. v Prevent the part from touching your body....
...Attach the ESD ground clip to provide a static-free work surface. v Use the black side of the computer is insulative and retains a charge even when you use coax or connector-outside shells on your clothing. v Select a grounding system, such as fully effective. You can be...requirements Electrical grounding of a grounded work mat, and the person handling the part are all at the same charge. Proper grounding of the AC plug on a double-insulated or battery-operated system. Make sure that meets the specific service requirement. v Prevent the part from touching your body....
Hardware Maintenance Manual
Page 35
...the Fn key. so if you specified. If the time set the low-battery alarm, the charge indicator notifies you are using the ACPI operating system, only the low-battery alarm is low. (Alternatively, if Hibernate when battery becomes low has been selected in screen blank mode: v The LCD is ...operation, press any operation with the keyboard, the TrackPoint, the hard disk, the parallel connector, or the diskette drive within that the battery power is available. v The hard-disk drive is low, and then the computer enters the power-saving mode automatically. In certain circumstances,...
...the Fn key. so if you specified. If the time set the low-battery alarm, the charge indicator notifies you are using the ACPI operating system, only the low-battery alarm is low. (Alternatively, if Hibernate when battery becomes low has been selected in screen blank mode: v The LCD is ...operation, press any operation with the keyboard, the TrackPoint, the hard disk, the parallel connector, or the diskette drive within that the battery power is available. v The hard-disk drive is low, and then the computer enters the power-saving mode automatically. In certain circumstances,...
Hardware Maintenance Manual
Page 37
... to go into hibernation mode automatically in either of the following conditions: v If a "hibernation time" has been set the mode to Hibernate when battery becomes low, and the battery charge becomes critically low. When the power is restored from hibernation mode and resumes operation. Related service information v If you are using the ACPI...
... to go into hibernation mode automatically in either of the following conditions: v If a "hibernation time" has been set the mode to Hibernate when battery becomes low, and the battery charge becomes critically low. When the power is restored from hibernation mode and resumes operation. Related service information v If you are using the ACPI...
Hardware Maintenance Manual
Page 41
...the ac adapter. 4. Disconnect the ac adapter and install the charged battery pack. 7. Check that power is supplied when you power on... supply checkouts: v "Checking the ac adapter" v "Checking operational charging" on page 36 v "Checking the battery pack" on page 36 v "Checking the backup battery" on page 37 Checking the ac adapter You are here because the...the ac adapter. 4. Note: Noise from the computer. 2. v If the problem persists, go to "Checking operational charging". To check the ac adapter, do the following : 1. General descriptions 35 If the voltage is acceptable, do the...
...the ac adapter. 4. Disconnect the ac adapter and install the charged battery pack. 7. Check that power is supplied when you power on... supply checkouts: v "Checking the ac adapter" v "Checking operational charging" on page 36 v "Checking the battery pack" on page 36 v "Checking the backup battery" on page 37 Checking the ac adapter You are here because the...the ac adapter. 4. Note: Noise from the computer. 2. v If the problem persists, go to "Checking operational charging". To check the ac adapter, do the following : 1. General descriptions 35 If the voltage is acceptable, do the...
Hardware Maintenance Manual
Page 42
... Checking operational charging To check whether the battery charges properly during operation, use a discharged battery pack or a battery pack that less than +11.0 V dc, the battery pack has been discharged. 36 ThinkPad T20, T21, T22, T23 (MT 2647/2648) If the battery status indicator or icon does not turn on , replace the system board. If the charge indicator still does...
... Checking operational charging To check whether the battery charges properly during operation, use a discharged battery pack or a battery pack that less than +11.0 V dc, the battery pack has been discharged. 36 ThinkPad T20, T21, T22, T23 (MT 2647/2648) If the battery status indicator or icon does not turn on , replace the system board. If the charge indicator still does...
Hardware Maintenance Manual
Page 51
... Windows 2000 or Windows XP, the Ultrabay status indicator does not blink while an Ultrabay 2000 device is off . Blinking green: The battery has enough power to operate, but not to move the cursor. Blinking orange: The battery needs to be charged when the indicator starts ...blinking orange, the computer beeps three times. The battery needs to be charged. Note: If you can be attached or detached. ThinkPad T20, T21, T22 and T23 series 45 Indicator 4 Scroll lock 5 Power on...
... Windows 2000 or Windows XP, the Ultrabay status indicator does not blink while an Ultrabay 2000 device is off . Blinking green: The battery has enough power to operate, but not to move the cursor. Blinking orange: The battery needs to be charged when the indicator starts ...blinking orange, the computer beeps three times. The battery needs to be charged. Note: If you can be attached or detached. ThinkPad T20, T21, T22 and T23 series 45 Indicator 4 Scroll lock 5 Power on...
Hardware Maintenance Manual
Page 55
... there, go to be any number. Battery pack. Do not replace a nondefective FRU. ThinkPad T20, T21, T22 and T23 series 49 Note For an IBM device not supported by diagnostic codes in the ThinkPad notebook computers, see the manual for each... error detected in boldface type. The most likely cause is displayed for that device. A numeric error is listed first, in POST or system operation. Charge the battery...
... there, go to be any number. Battery pack. Do not replace a nondefective FRU. ThinkPad T20, T21, T22 and T23 series 49 Note For an IBM device not supported by diagnostic codes in the ThinkPad notebook computers, see the manual for each... error detected in boldface type. The most likely cause is displayed for that device. A numeric error is listed first, in POST or system operation. Charge the battery...