Lenovo X41 manual LCD-related symptoms, 70 MT1864/1865/2525/2526/2527/2528

Page 74

Symptom-to-FRU index

LCD-related symptoms

Important

The TFT LCD for the notebook computer contains many thin-film transistors (TFTs). The presence of a small number of dots that are missing, discolored, or always lighted is characteristic of TFT LCD technology, but excessive pixel problems can cause viewing concerns. The LCD should be replaced if the number of missing, discolored, or lighted dots in any background is:

vXGA: 8 or more bright dots, 8 or more dark dots, or a total of 9 or more bright and dark dots.

Note: A bright dot means a pixel is always on (white or color.) A dark dot means a pixel is always off (black color.)

Symptom or error

FRU or action, in sequence

 

 

No beep, power-on indicator

System board.

on, and a blank LCD during

 

 

POST.

 

 

 

 

 

v LCD backlight not working.

1.

Reseat the LCD

v

LCD too dark.

 

connectors.

v LCD brightness cannot be

2.

LCD assembly.

 

adjusted.

3.

System board.

v LCD contrast cannot be

 

 

 

adjusted.

 

 

 

 

 

 

v

LCD screen unreadable.

1.

See important note for

v

Characters missing pixels.

 

“LCD-related symptoms.”

v

Screen abnormal.

2.

Reseat all LCD connectors.

v

Wrong color displayed.

3.

LCD assembly.

 

 

4.

System board.

 

 

Horizontal or vertical lines

LCD assembly.

displayed on LCD.

 

 

 

 

 

 

70MT1864/1865/2525/2526/2527/2528

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Contents ThinkPad Computer Hardware Maintenance Manual Page Contents Recovery CDs 2060 Bluetooth antenna cableParts list Common parts listAbout this manual MT1864/1865/2525/2526/2527/2528 Strategy for replacing FRUs Important service informationBefore replacing parts Strategy for replacing a hard disk drive How to use error messagesDynamic Configure To Order CTO Custom Model Variant CMVFRU identification for CTO, CMV, and GAV products Using PEWUsing eSupport General Announce Variant GAVUsing the HMM Important information about replacing RoHS compliant FRUs Related web URLs are Safety notices multilingual translationsDiskette compatibility matrix Safety notice 10 MT1864/1865/2525/2526/2527/2528 Continuation of safety notice 12 MT1864/1865/2525/2526/2527/2528 Continuation of safety notice 14 MT1864/1865/2525/2526/2527/2528 Continuation of safety notice Safety notice Safety notice 18 MT1864/1865/2525/2526/2527/2528 Introduction Safety information General safetyElectrical safety Safety information Safety inspection guide Safety information Grounding requirements Laser compliance statement Laser compliance statement 28 MT1864/1865/2525/2526/2527/2528 Read this first What to do firstFollowing are not covered under warranty Creating a Recovery Repair diskette Related service informationService Web site Restoring the preloaded system Ordering the recovery CDFollow the on-screen instructions Product Recovery programSelect Create a Recovery Repair diskette. Press Enter Reinstall the Product Recovery program? Y/N Using the recovery CDTo create the service partition Install preloaded system from CDRecovering the hard disk to original contents Security IBM- Predesktop Area-Disabled Recovering the hard disk using the recovery CDDouble-clickRecover to factory contents Reinstall the Product Recovery program? Y/N Hard disk password PasswordsPower-on password Supervisor passwordSelect Power-On Password How to remove the power-on passwordHow to remove the hard disk password To remove a POP that you have forgotten, do the followingStandby mode Power managementScreen blank mode Select Master HDPHibernation mode Related service information Testing the computer Checkout guideCreating the PC-Doctor diagnostics diskette Diagnostics Interactive Tests 44 MT1864/1865/2525/2526/2527/2528Hardware Info Power system checkoutDetecting system information with PC-Doctor UtilityPin Voltage V dc Checking the ac adapterChecking operational charging Do the following General descriptions Checking the battery packChecking the backup battery Terminal Voltage V dcWire Voltage V dc Red + BlackThinkPad 12.1-in. XGA TFTPage Product overview SpecificationsFeature Description ThinkPad X4152 MT1864/1865/2525/2526/2527/2528 CDCGreen Status indicators forIndicator Meaning Orange 54 MT1864/1865/2525/2526/2527/2528Blinking green Blinking orangeFRU tests Following table shows the test for each FRU56 MT1864/1865/2525/2526/2527/2528 Fn key combinations 58 MT1864/1865/2525/2526/2527/2528 Symptom-to-FRU index Numeric error codes60 MT1864/1865/2525/2526/2527/2528 Then save current 62 MT1864/1865/2525/2526/2527/2528 Battery and run Bios 64 MT1864/1865/2525/2526/2527/2528 Recover to Factory Symptom or error FRU or action, in sequence 2010 66 MT1864/1865/2525/2526/2527/2528Error messages 68 MT1864/1865/2525/2526/2527/2528 Beep symptoms LCD-related symptoms 70 MT1864/1865/2525/2526/2527/2528Intermittent problems Undetermined problemsPlastic to plastic FRU replacement noticesScrew notices Logic card to plasticSelect 2. Read S/N data from Eeprom Retaining serial numbersRestoring the serial number of the system unit Retaining the Uuid Reading or writing the ECA informationFRU replacement notices Removing and replacing a FRU 76 MT1864/1865/2525/2526/2527/2528Battery pack Hard disk drive Step Screw quantity TorqueDimm cover Step Screw quantity Torque M2 ×3 mm 157 Nm KgfcmMini PCI adapter, DIMM, MDC-2, and BMDC-3 M2 × 3.5 mm, nylon-coated 196 Nm Kgfcm Removing and replacing a FRU Keyboard Gently push the keyboard forward, as shown in step Removing and replacing a FRU Upper case 86 MT1864/1865/2525/2526/2527/2528Removing and replacing a FRU Removing and replacing a FRU Fingerprint board 90 MT1864/1865/2525/2526/2527/2528 Backup battery LCD module 92 MT1864/1865/2525/2526/2527/2528Then remove the four screws as shown Remove LCD module 94 MT1864/1865/2525/2526/2527/2528 Hard disk housing assembly Top shielding 96 MT1864/1865/2525/2526/2527/2528Lower case Remove the two screws at the bottom 98 MT1864/1865/2525/2526/2527/2528Remove lower case Removing and replacing a FRU Fansink LCD bezel Remove LCD bezel Removing and replacing a FRU 2020 LCD Inverter card Reconnect the LCD cable and inverter Antenna L and antenna R 108 MT1864/1865/2525/2526/2527/2528Removing and replacing a FRU 110 MT1864/1865/2525/2526/2527/2528 Removing and replacing a FRU Hinge L and hinge R 112 MT1864/1865/2525/2526/2527/2528Remove hinge R Bluetooth antenna cable Locations Front view for X41 series Rear view for X41 series Bottom view for X41 series Front View for X4 UltraBase Dock Rear View for X4 UltraBase Dock Parts list Overall 120 MT1864/1865/2525/2526/2527/2528121 122 MT1864/1865/2525/2526/2527/2528 No. FRUMB DDR2-533 Sdram SO-DIMM 124 MT1864/1865/2525/2526/2527/2528 FRU CRUThinkPad X41 126 MT1864/1865/2525/2526/2527/2528 ThinkPad X41 128 MT1864/1865/2525/2526/2527/2528 Emea 130 MT1864/1865/2525/2526/2527/2528 LCD FRUs12.1-in. XGA TFT Keyboard Chicony 132 MT1864/1865/2525/2526/2527/2528Language Recovery CDs For Windows XP Professional134 MT1864/1865/2525/2526/2527/2528 Miscellaneous partsFor Windows XP Home Edition Optional FRUs AC adapters 136 MT1864/1865/2525/2526/2527/2528Country or region Power cords systemFor Models-xxU, xxF, xxS, xxP, xxJ, xxE, xxY For Models-xxC, xxM, xxA, xxG, xxH, xxK 138 MT1864/1865/2525/2526/2527/2528Telephone cable Page Page Trademarks ThinkPad X41 Part Number 39T5971
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X41 specifications

The Lenovo X41, a notable entry in the ThinkPad series, was introduced as a lightweight and portable laptop ideal for business professionals and casual users alike. This device gained recognition for its reliability, innovative features, and robust performance, making it a sought-after option during its time.

One of the primary highlights of the Lenovo X41 is its form factor. Weighing in at just around 3.5 pounds, it epitomizes portability without compromising on functionality. The 12.1-inch XGA display provides a balance between screen real estate and travel-friendly dimensions. This size makes it convenient for users who frequently move between meetings or travel for work.

Powering the X41 is Intel's Centrino technology, which integrates the processor, chipset, and wireless capabilities into a cohesive unit. This not only optimizes performance but also enhances battery life, enabling users to work longer without plugging in. The model typically features a robust Intel Pentium M processor, available in various configurations, giving users options in terms of speed and efficiency.

The design of the X41 adheres to the iconic ThinkPad aesthetic, characterized by its black casing, rugged build, and the famous red TrackPoint mouse in the center of the keyboard. This keyboard is spill-resistant, which adds an extra layer of protection against accidents. Users appreciate the tactile feedback and comfort offered by the keys, making it suitable for extended typing sessions.

In terms of connectivity, the Lenovo X41 is equipped with various ports, including USB, Ethernet, and an optional docking station for enhanced capabilities. Additionally, the laptop includes integrated Wi-Fi for seamless wireless connectivity, an essential feature for modern business environments.

Security is another noteworthy aspect of the Lenovo X41. It typically features a fingerprint reader, a function that enhances user authentication and data protection.

Overall, the Lenovo X41 stands out due to its combination of portability, performance, and essential features tailored for users on the go. Its design emphasizes durability and usability, making it a versatile choice for a range of applications, whether for business professionals, students, or everyday users seeking a reliable and efficient laptop.