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Lenovo ThinkPad Edge Es pages. Page 4 System board assembly and fan assembly. Miscellaneous parts AC power adapters Important: This manual is intended only for trained service technicians who are familiar with ThinkPad products. Use this manual along with the advanced diagnostic tests to troubleshoot problems effectively. Page 6 Hardware Maintenance Manual Page 7: Chapter 1. Do not obstruct fan louvers or cover them with labels or stickers.
Page 8: Electrical Safety Electrical safety Observe the following rules when working on electrical equipment. Important: Use only approved tools and test equipment. Some hand tools have handles covered with a soft material that does not insulate you when working with live electrical currents.
Many customers have, near their equipment, rubber floor mats that contain small conductive fibers to decrease electrostatic discharges. Page 9: Safety Inspection Guide — Use caution; do not become a victim yourself. Safety inspection guide The purpose of this inspection guide is to assist you in identifying potentially unsafe conditions. As each machine was designed and built, required safety items were installed to protect users and service technicians from injury.
Page Grounding Requirements 2. Page 13 Chapter 1 Safety information Page 19 Chapter 1 Safety information Page 20 Hardware Maintenance Manual Page 21 Chapter 1 Safety information Page 22 Hardware Maintenance Manual Page 23 Chapter 1 Safety information Page 24 Hardware Maintenance Manual Page 26 Hardware Maintenance Manual Page 27 Chapter 1 Safety information Page 28 Hardware Maintenance Manual Page 29 Chapter 1 Safety information Page 30 Hardware Maintenance Manual Page 31 Chapter 1 Safety information Page 32 Hardware Maintenance Manual Page Chapter 2.
Page 36 1. Click the Parts Detail tab to view the list of service parts. Page Chapter 3. Some descriptions might not apply to your particular computer. Page 39 Configuration utility for DOS. Page Lenovo Thinkvantage Toolbox Web site. Page Uefi Diagnostic Program F12 key. Press the Tab key to switch to the Application Menu window. Use the arrow keys to select Lenovo Diagnostics and then press Enter. The main screen of the UEFI diagnostic program is displayed. Attach the USB device to the computer.
Turn on the computer. Page Checking Operational Charging Voltage V dc Ground 20V Note: Output voltage across pin 2 of the ac power adapter might be different from the one you are servicing. If the voltage is not correct, replace the ac power adapter. Hardware Maintenance Manual Page Chapter 4. Restoring the factory contents by using Recovery Disc Set When the hard disk drive HDD or solid state drive is replaced because of a failure, no product recovery program is on the new drive.
Page Passwords c. Press F10 to save the ThinkPad Setup configuration changes. Follow the instructions on the screen to begin the recovery process. If it has, it can be used for access to the hard disk drive. If no master HDP is available, neither Lenovo nor Lenovo authorized service technicians provide any services to reset either the user or the master HDP, or to recover data from the hard disk drive. Page Power Management 1. Select Security, using the cursor directional keys to move down the menu.
Select Password. Select Hard-disk x password, where x is the letter of the hard disk drive. A pop-up window opens. If you have defined one of the following actions as the event that causes the system to go into hibernation mode, perform that action. Page Lcd-Related Symptoms If the LCD you are servicing has two or less visible defective pixels, it should not be considered faulty.
However, if the LCD has three or more visible defective pixels, it will be deemed as defective by Lenovo and it should be replaced. Page 54 2. Visually check each FRU for damage. Replace any damaged FRU. Remove or disconnect all of the following devices: a. Non-ThinkPad devices b. Printer, mouse, and other external devices c.
Battery pack d. Hard disk drive e. External diskette drive or optical drive f. If a battery is installed on the computer, it is charged when this indicator is on. Page 56 Table 6. Status indicators continued Indicator Meaning Sleep standby The illumination dot in the ThinkPad logo on the outer lid of the computer and on the status palm rest works as a system-status indicator: it shows whether the computer is in sleep standby , hibernation, or normal model.
Page Chapter 6. Special Keys The computer display becomes brighter. Please make sure the at the battery has been drained or disabled through BIOS before beginning. Use a Phillips 00 screwdriver to remove one M2 x 3mm screw from the side of the device. When reassembling, make sure the hard drive is securely in the case before beginning. Remove three M2x3 mm screws using a Phillips 00 screwdriver from the base of the laptop near the opening.
Remove the M3 x 2mm screw from the hole left by the hard drive using a Phillips 00 screwdriver. Wedge the plastic opening tool between the upper and lower halves of the lower case. Be sure not to yank any of the wires connected to the case as this could damage them. Some wires may be connected by a clamp.
In order to remove the clamp, press upwards on the lever attached to the connector. Be careful to not yank on the wires when disconnecting them as they are easily damaged. Unscrew the two M2 x 3mm screws near the hinges using a Phillips 00 screwdriver. Slide the black and grey wires out from underneath the plastic tab with the plastic opening tool. Pull out the fabric covered wire connecting the Screen to the motherboard underneath the cooling fan.
Make sure to pull parallel to the slot the wire is connected to, otherwise you may damage or completely break it. Cancel: I did not complete this guide. Badges: Fix Your Stuff Community Store. Difficulty Moderate. Steps Time Required 25 - 30 minutes. Sections 3. Flags 0. Introduction If you need to replace the screen, use this guide to access and remove the screen on this device. Tools Buy these tools.
Step 1 Hard Drive.
Lenovo thinkpad edge e420 screen replacement dead inside nickHow to Replace Screen of Lenovo Thinkpad Edge E431
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