IBM X121E manual Power system checkout, Checking the ac power adapter, Interactive Tests Mouse

Page 34

Table 1. FRU tests (continued)

FRU

Applicable test

 

 

TrackPoint or pointing

If the TrackPoint does not work, check the configuration as specified in the ThinkPad

device

Setup. If the TrackPoint is disabled, select Automatic to enable it.

 

After you use the TrackPoint, the pointer may drift on the screen for a short time. This

 

drift can occur when a slight, steady pressure is applied to the TrackPoint pointer.

 

This symptom is not a hardware problem. If the pointer stops after a short time, no

 

service action is necessary.

 

If enabling the TrackPoint does not correct the problem, continue with the following:

 

Interactive Tests Mouse

Touch Pad

If the Touch Pad does not work, check the configuration as specified in the ThinkPad

 

Setup. If the Touch Pad is disabled, select Automatic to enable it. If enabling the

 

Touch Pad does not correct the problem, continue with the following:

 

Interactive Tests Mouse

Power system checkout

To verify a symptom, do the following:

1.Turn off the computer.

2.Remove the battery pack.

3.Connect the ac power adapter.

4.Check that power is supplied when you turn on the computer.

5.Turn off the computer.

6.Disconnect the ac power adapter and install the charged battery pack.

7.Check that the battery pack supplies power when you turn on the computer.

If you suspect a power problem, see the appropriate one of the following power supply checkouts:

“Checking the ac power adapter” on page 28

“Checking operational charging” on page 29

“Checking the battery pack” on page 29

“Checking the backup battery” on page 30

Checking the ac power adapter

You are here because the computer fails only when the ac power adapter is used.

If the power-on indicator does not turn on, check the power cord of the ac power adapter for correct continuity and installation.

If the computer does not charge during operation, go to “Checking operational charging” on page 29

To check the ac power adapter, do the following:

1.Unplug the ac power adapter cable from the computer.

2.Measure the output voltage at the plug of the ac power adapter cable. See the following figure:

3

2

1

(20V)

Pin

Voltage (V dc)

1+20

20

3Ground

28Hardware Maintenance Manual

Image 34
Contents Hardware Maintenance Manual ThinkPad X121eFirst Edition July Copyright Lenovo Contents Locations ThinkPad X121e About this manualIii Iv Hardware Maintenance Manual Safety information General safetyElectrical safety Safety inspection guide Safety notices multilingual translations Grounding requirementsSafety information Hardware Maintenance Manual Perigo Perigo Safety information Vorsicht Vorsicht Hardware Maintenance Manual Safety information Hardware Maintenance Manual Safety information Hardware Maintenance Manual Safety information Hardware Maintenance Manual Strategy for replacing FRUs Important service informationBefore replacing parts Select Downloads & DriversStrategy for replacing a hard disk drive How to use error messageDynamic Configure To Order CTO Important notice for replacing a system boardFRU identification for CTO, CMV, and GAV products Using PEWGeneral Announce Variant GAV Hardware Maintenance Manual General checkout What to do firstFollowing are not covered under warranty Diagnostics using PC-Doctor for DOSCheckout guide Testing the computer Hardware Info Diagnostics Interactive TestsLenovo ThinkVantage Toolbox UtilityFRU tests Applicable testInteractive Tests Mouse Power system checkoutChecking the ac power adapter Pin Voltage V dcChecking operational charging Checking the battery packTerminal Voltage V dc Checking the backup battery Wire Voltage V dcRelated service information Restoring the factory contents by using Recovery Disc SetPower-on password PasswordsHard disk password How to remove the hard-disk password Supervisor passwordHow to remove the power-on password Select Power-On PasswordScreen blank mode Power managementSleep standby mode Hibernation mode Symptom-to-FRU indexNumeric error codes Beep symptoms Error messagesNo-beep symptoms Reseat the LCD connectors LCD-related symptomsIntermittent problems See important note for LCD-related symptomsUndetermined problems Hardware Maintenance Manual Status indicators Indicator MeaningHardware Maintenance Manual Fn key combinations Speaker volume down keysKey combination Description Key combination Description For Windows For Windows Vista and Windows XPExternal CRU statement to customers FRU replacement noticesScrew notices Plastic to plasticRestoring the serial number of the system unit Retaining serial numbersSelect 2. Read S/N data from Eeprom MTM on the rear label Retaining the UuidReading or writing the ECA information Product ID on the rear labelHardware Maintenance Manual Removing and replacing a FRU Before servicing ThinkPad X121e modelsBattery pack Important notice for replacing a battery packBottom slot cover Memory modules Removal steps of memory modulesHard disk drive or solid state drive assembly PCI Express Mini Card for wireless LAN Step Screw quantity Color TorqueRemoval steps of PCI Express Mini Card for wireless LAN PCI Express Mini Card for wireless WAN Removal steps of PCI Express Mini Card for wireless WANKeyboard Removal steps of keyboard Power sub card and microphone Top case assembly Removal steps of top case assembly Bluetooth daughter card Speaker assembly 1120 I/O board System board assembly, fan assembly, and backup battery Important notices for handling the system boardStep Screw quantity Color Torque CRT board assembly with cable DC-in sub card and base cover assembly Applying labels to the base cover Hardware Maintenance Manual When installing LCD unitM2.5 × 5 mm, wafer-head, nylon-coated Black 392 Nm Kgfcm LCD bezel assembly Step Screw cap Screw quantity Color TorqueIntegrated camera Removal steps of integrated cameraLCD panel, LCD cable, and hinges Removal steps of hinges Removing and replacing a FRU Hardware Maintenance Manual Locations Front viewRear view Bottom viewParts list External CRU statement to customersOverall FRU Overall FRU no CRUCRU CRU CRU CRU CRU CRU No. FRU Overall LCD FRUsFRU no. CRU ID FRU LCD FRU LCD FRU LCD Language FRU no Ac power adapters Miscellaneous partsPower cords Country or region FRU noWindows Vista Business 32-bit DVDs Recovery discs Windows XP Professional 32-bit DVDsLanguage Windows 7 Home Basic 32-bit DVDs Windows 7 Home Premium 32-bit DVDsWindows 7 Home Premium 64-bit DVDs Windows 7 Professional 32-bit DVDsWindows 7 Professional 64-bit DVDs 3051-CTO, 52x, 5Ax, 5Bx, 5Dx, 5Ex 3053-CTO 3055-CTOWindows 7 Starter 32-bit DVDs Windows 7 Ultimate 32-bit DVDsWindows 7 Ultimate 64-bit DVDs US English 04T1876Common service tools ToolAppendix A. Notices 103Electronic emissions notices TrademarksPage 0A96013