Lenovo E40, E50 manual Reading or writing the ECA information

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The algorithm that generates the number is designed to provide unique IDs until the year A.D. 3400. No two computers in the world have the same number.

When you replace the system board, you must set the UUID on the new system board as follows:

1.Install the LENOVO ThinkPad Hardware Maintenance Diskette Version 1.76 or later, and restart the computer.

2.From the main menu, select 4. Assign UUID.

A new UUID is created and written. If a valid UUID already exists, it is not overwritten.

Reading or writing the ECA information

Information on Engineering Change Announcements (ECA) are stored in the EEPROM of the system board. The electronic storage of this information simplifies the procedure to check if the ECA has been previously applied to a machine. The machine does not need to be disassembled to check for the ECA application.

To check what ECAs have been previously applied to the machine, use the ECA Information Read/Write function on the LENOVO ThinkPad Hardware Maintenance Diskette Version 1.76 or later.

1.Insert the LENOVO ThinkPad Hardware Maintenance Diskette Version 1.76 or later, and restart the computer.

2.From the main menu, select 6. Set ECA Information.

3.To read ECA information, select 2. Read ECA/rework number from EEPROM and follow the instruction.

4.To read box build date, select 5. Read box build date from EEPROM, and follow the instruction on the screen.

After an ECA has been applied to the machine, the EEPROM must be updated to reflect the ECA’s application. Use the LENOVO ThinkPad Hardware Maintenance Diskette Version 1.76 or later to update the EEPROM.

Note: Only the ECA number is stored in the EEPROM. The machine type of the ECA is assumed be the same as the machine type of the machine that had the ECA applied to it.

1.Insert the LENOVO ThinkPad Hardware Maintenance Diskette Version 1.76 or later, and restart the computer.

2.From the main menu, select 6. Set ECA Information.

3.To write ECA information, select 1. Write ECA/rework number from EEPROM, and follow the instruction.

4.To write box build date, select 4. Write box build date from EEPROM, and follow the instruction on the screen.

If the system board is being replaced, try to read the ECA information from the old system board and transfer the information to the new system. If the system board is inoperable, this will not be possible.

FRU replacement notices 75

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Contents Page Page Page First Edition March Copyright Lenovo Contents 185 ThinkPad Edge 15″ and E50 ThinkPad Edge 14″ and E40Page Safety information General safety Electrical safety Page Safety inspection guide Grounding requirements Safety notices multilingual translations Page Safety information Page Safety information Perigo Perigo Page Safety information Vorsicht Vorsicht Page Safety information Page Safety information Page Safety information Peligro Peligro Page Safety information Laser compliance statement multilingual translations Safety information Não abra CuidadoSafety information Gefahr ÖffnenSafety information Page Safety information Precaución Safety information Page Important service information Select Downloads and drivers Before replacing partsStrategy for replacing FRUs Strategy for replacing a hard disk driveImportant notice for replacing a system board How to use error messageFRU identification for CTO, CMV, and GAV products Dynamic Configure To Order CTOUsing eSupport Page General checkout What to do first Following are not covered under warrantyCheckout guide Diagnostics using PC-Doctor for DOSTesting the computer Utility Diagnostics Interactive TestsHardware Info Lenovo ThinkVantage Toolbox Lenovo System Toolbox PC-Doctor for Rescue and RecoveryFollowing table shows the test for each FRU FRU testsInteractive Tests --Mouse Checking operational charging Power system checkoutChecking the ac adapter Checking the backup battery Checking the battery packWire Voltage V dc Page Restoring the factory contents by using Recovery Disc Set Related service informationPasswords How to remove the power-on password Power-on passwordHard-disk password Supervisor passwordSelect Master HDP How to remove the hard-disk passwordSelect Power-On Password Related service information Hibernation mode Power managementScreen blank mode Sleep modeNumeric error codes Symptom-to-FRU indexDimm 02F5 No-beep symptoms Error messagesReseat the LCD connectors LCD-related symptomsUndetermined problems Intermittent problemsStatus indicators Indicator Meaning On-screen indicators Caps lock Special keys and Fn key combination Special key or Fn Description key combination Torque driver Screw noticesPlastic to plastic Logic card to plasticRetaining the Uuid Retaining serial numbersRestoring the serial number of the system unit Reading or writing the ECA information Page Removing and replacing a FRU Important notice for replacing a battery pack Battery packExpressCard blank bezel Step Screw quantity Color Torque Optical drive or travel coverThermal cover Hard disk drive HDD assembly Removal steps of HDD assembly Dimm Fan assembly M2 ⋅ 4 mm, wafer-head, nylon-coated Silver 181 Nm Kgfcm For ThinkPad Edge 15″ and E50 For ThinkPad Edge 14″ and E40Removal steps of fan assembly For discrete fan assembly For integrated fan assembly 1080 CPU WAN M2 ⋅ 3 mm, wafer-head, nylon-coated Black 181 Nm Kgfcm Removal steps of SIM card Palm rest assembly with cables Removal steps of palm rest assembly with cables When installing PCI Express Mini Card for wireless LAN Removal steps of PCI Express Mini Card for wireless LAN Backup battery Bluetooth daughter card BDC-2 M2 ⋅ 5 mm, wafer-head, nylon-coated Black 181 Nm Kgfcm KeyboardStep Screw quantity Color Torque When installing the keyboard, do as follows Keyboard bezel Step Screw quantity Color Torque Removal steps of keyboard bezel M2.5 ⋅ 6.5 mm, wafter-head, nylon-coated Black 392 Nm Kgfcm LCD unitStep Release wireless antenna cables from the cable guides Step Screw quantity Color Torque Removal steps of LCD unit Top shielding assembly Removal steps of top shielding assembly Important notices for handling the system board System board assemblyCPU Location of major sensitive components on the system board Removal steps of system board assembly Removal steps of system board assembly USB connector board and USB cable assembly For ThinkPad Edge 14″ and E40 DC-in cable and base cover M2 ⋅ 5 mm, wafer-head, nylon-coated Black 181 Nm Kgfcm For ThinkPad Edge 14″ and E40 For ThinkPad Edge 15″ and E50 For ThinkPad Edge 14″ and E40 Step Screw cap Screw quantity Color Torque LCD front bezelSpeaker assembly Integrated camera Hinges, LCD panel, LCD cable, and LCD rear cover assembly M2 ⋅ 5 mm, wafer-head, nylon-coated Black 181 Nm Kgfcm Step Screw quantity Color Torque Antenna assembly Front view LocationsPage Bottom view Rear viewPage Optional-service CRUs Self-service CRUsOverall CRU CRU CRU CRU CRU CRU CRU CRU DVD-RAM/RW drive 63Y0903 DVD-RAM/RW drive 63Y0905 CRU CRU CRU CRU CRU CRU CRU CRU CRU CRU No. FRU Overall FRU no CRU CRU LCD FRUs FRU 14.0-inch HD LCD FRU no CRU CRU CRU FRU 15.6-inch HD LCD FRU no CRU CRU CRU CRU CRU Language FRU no Parts list-Illuminated keyboard Miscellaneous parts AC adapters Power cords Recovery discs Windows 7 Home Basic 32 bit DVDs Windows 7 Home Premium 32 bit DVDs Windows 7 Home Premium 64 bit DVDs Windows 7 Professional 32 bit DVDs Parts list-Windows 7 Professional 32 bit recovery DVDs Windows 7 Professional 64 bit DVDs Parts list-Windows 7 Professional 64 bit recovery DVDs Tool Common service toolsPage 185 Trademarks Page Part Number 75Y4302
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E40, E50 specifications

Lenovo has long been recognized for producing reliable and innovative laptops, and the E50 and E40 series showcase this commitment to quality and performance. Targeted primarily at small businesses, these models are built for efficiency, durability, and usability, making them a popular choice among professionals on the go.

The Lenovo E50 comes equipped with the latest Intel processors, ensuring fast and efficient multitasking capabilities. With options for Intel's Core i5 or i7 processors, users can enjoy seamless performance for everyday tasks alongside more demanding applications. Additionally, the laptop supports DDR3L RAM, which can be configured up to 16GB, providing substantial memory for applications and enhancing the overall user experience.

On the other hand, the E40 series features a slightly more compact design while still offering robust power. This laptop variant is also equipped with Intel processors, providing a solid foundation for various computing needs. With a focus on portability, the E40 is an ideal solution for professionals who require a lightweight device without sacrificing performance.

Both models come with Lenovo's signature AccuType keyboard, which features a user-friendly design for comfortable typing, reducing user fatigue during prolonged use. This keyboard design is particularly beneficial for business users who may spend hours drafting reports, answering emails, or engaging in video conferences.

In terms of display, the E50 and E40 laptops boast vibrant HD screens that deliver sharp visuals and broad viewing angles. The anti-glare technology further enhances usability, allowing users to work effectively in various lighting conditions.

Connectivity is another strong point for both laptops. Equipped with multiple USB ports, HDMI output, and an Ethernet port, these devices offer versatility for connecting a variety of peripherals, external displays, and networks. Additionally, built-in Wi-Fi and Bluetooth ensure that users remain connected, facilitating collaboration and communication.

Security features are also paramount. Both the E50 and E40 offer options for fingerprint readers and TPM 2.0, ensuring that sensitive data remains protected against unauthorized access.

In conclusion, the Lenovo E50 and E40 series represent robust solutions for small businesses and professionals seeking reliable performance, portability, and comprehensive features. With their powerful processors, quality displays, ergonomic keyboards, and strong security measures, these laptops provide a balanced mix of productivity and convenience, making them valuable tools in today’s fast-paced work environment.
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