Asus X421E Series Repair Manual
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Asus X421E Series Repair Manual

Asus X421E Series Repair Manual

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Disassembly Procedure
2 - 1
V1.0

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Summary of Contents for Asus X421E Series

  • Page 1 Disassembly Procedure 2 - 1 V1.0...
  • Page 2 Disassembly Procedure 2 - 2 V1.0...
  • Page 3 Disassembly Procedure 2 - 3 V1.0...
  • Page 4 Disassembly Procedure Service Overview 2 - 4 V1.0...
  • Page 5 Disassembly Procedure Pre-repair checklist 2 - 5 V1.0...

  • Page 6: Service Overview

    Disassembly Procedure Service Overview Please pay special attention to the cautions below to prevent any damages to the notebook and also please be sure to select the appropriate tools described in this section to perform any services desired. Precautions Before you perform any service and or repair on the notebook, please follow the steps below first. 1.
  • Page 7 Disassembly Procedure If the screws have the following damaged appearance, please do not use. a. Shape deformed b. Paint scratched off c. Rusty d. Damaged head – unable to drive in e. Damaged unable to securely tighten 10. The following chapter includes all part numbers mentioned in service guide are used for reference only, actual part name depends on different SKU, if you need the exact part number for ordering please refer to the orderbook.
  • Page 8 Disassembly Procedure Appropriate Tools The illustrations below show the appropriate tools that should be used for the notebook’s service and repair. Cross Screwdriver Please according to different screw specification and choose different screwdriver and head. Below photos are for reference only. Use a cross screwdriver to fasten/remove screws.
  • Page 9 Disassembly Procedure Tweezers Use a pair of tweezers to remove/insert flexible cables. Thickness gauge Thickness compass specification 0.05mm-1.5mm Use it to measure the gap. Magnetism Board Suggest local buy magnetism board to place screw, avoid mix different type screw to cause assembly damage.
  • Page 10 Disassembly Procedure Before disassemble any parts, please disconnect all power source firstly, ex: AC plug/Battery connector/Power protect screw etc. Bottom Case Module The illustrations below show how to remove and disassemble the Bottom Case Module. Notice: After disassembling bottom case, if you want to replace any part, please be sure to disconnect the battery connector more than ten seconds to avoid damaging any part.
  • Page 11 Disassembly Procedure 2. Use disassembly tool to pry up the sides of the top case. Parts ⚫ X421FPY-2S BOTTOM CASE ASSY *1 ⚫ Total screw *9 (Actual part name depends on different SKU.) 2 - 11 V1.0...

  • Page 12: Battery Module

    Disassembly Procedure Battery Module The illustration below shows how to remove the battery module. Remove Battery Module Disconnect the battery cable and remove 6 screws on the Battery module then take away the Battery module . Assembly Notice: Follow the reverse numbers to lock screws. Screw tightening torque (Kg F-cm): 2KG±0.2kgf.

  • Page 13: Ssd Module

    Disassembly Procedure Parts ⚫ X421 BATT *1 ⚫ Total screw *6 (Actual part name depends on different SKU.) SSD Module The illustration shows how to remove the SSD Module. Remove SSD Module Remove 1 screw on SSD and take it away. Screw tightening torque (Kg F-cm): 2.0KG±0.2kgf.
  • Page 14 Disassembly Procedure Parts ⚫ SSD P3X2 512GB M2 2280 NVME *1 ⚫ SSD ABSORBER*1 ⚫ Total screw *1 (Actual part name depends on different SKU.) Thermal & Fan Module The illustration below shows how to remove the Thermal& fan module. Refer the disassembly of the X512FL Remove Thermal &...
  • Page 15 Disassembly Procedure Screw tightening torque :(Kg F-cm): 2.0± 0.2 kgf. Please well arrange the wifi Cable when you assemble it. 2.Remove the two Mylar 2 - 15 V1.0...
  • Page 16 Disassembly Procedure Assembly Notice: When the main board is replaced and the thermal module is not replaced, the thermal pad needs to be renewed. The usage please follow the picture. 2 - 16 V1.0...
  • Page 17 Disassembly Procedure Location:[GPU/CPU] Thermal material: Main: GA500 Grease Thermal grease thickness = 0.2 ~ 0.3mm X421EA_EAY X421EQ_EQY_EPY Notice：Please use the correct technique of taking fans in order to avoid being out of shape. Correct demonstration Wrong demonstration Parts ⚫ X421FQY TH MOD ASM * 1 ⚫...

  • Page 18: Wlan Module

    Disassembly Procedure WLAN Module The illustrations below show how to remove the WLAN Module. Remove WLAN Module Remove 1 screw from the WLAN card and then take the WLAN card away. Screw tightening torque (Kg F-cm): 2.0KG±0.2kgf. Parts: ⚫ 802.11AC+BT5.0(1*1)M.2 2230 ⚫...
  • Page 19 Disassembly Procedure 2.Remove 2 screws on the IO BD ,disconnect the IO BD cable(MB side),and take it away. 2 - 19 V1.0...
  • Page 20 Disassembly Procedure 2. Disconnect the IO BD cable 2 - 20 V1.0...
  • Page 21 Disassembly Procedure Remove MB Module 1.Disconnect the Touch Pad FPC, Keyboard FPC,KB back light FPC. 2 - 21 V1.0...
  • Page 22 Disassembly Procedure EDP cable speaker cable Camera cable Assembly notice: Insert FFC to the bottom until just accord with the line when lock the latch. Assembly notice: Please change new one, If FPC or FFC is damage during disassembly. Here are some samples of FPC or FFC damage: 2 - 22 V1.0...
  • Page 23 Disassembly Procedure 2.Remove 4 screws on the main board. Screw tightening torque: 2.0KG± 0.2kgf. 2 - 23 V1.0...
  • Page 24 Disassembly Procedure Notice: These below picture for your reference for mylar/gasket/sponge etc. of MB. X421EAY MB POWER MYLAR 2 - 24 V1.0...
  • Page 25 Disassembly Procedure For X421EAY X421FAY MB MYLAR For X421EA X421FA MB MYLAR Parts ⚫ X421FQY MB._8G/I5-10210U/AS *1 ⚫ X421FQY IO BD./AS *1 ⚫ X421FQY BTM FFC 30P 0.5,L101.5 *1 ⚫ Screw *6 (Actual part name depends on different SKU.) 2 - 25 V1.0...
  • Page 26 Disassembly Procedure Speaker Module & Touch pad Moudle The illustrations below show how to remove the Speaker & Touch Pad Module Speaker Module Please well arrange Speaker Cable when you assemble them. The follow picture show how to arrange the Speaker Cable. 2 - 26 V1.0...
  • Page 27 Disassembly Procedure Touch pad Moudle Remove 3 screws and take out the Touch pad. 2. Remove the touchpad cable 2 - 27 V1.0...
  • Page 28 Disassembly Procedure Notice: please follow the picture to use the gasket which is used between the Touchpad/Number pad/TP with FP and C case. 2 - 28 V1.0...

  • Page 29: Lcd Module

    Disassembly Procedure A Metal Version Notice: please follow the picture to use the L gasket when SCREEN PAD/Number pad/ SKU which has cursor drift issue Parts ⚫ X421FA SPEAKER *1 ⚫ X421FL-8G TOUCHPAD MODULE *1 ⚫ X421FA TP FFC 8P 0.5MM,L85.5*1 ⚫...
  • Page 30 Disassembly Procedure 2. Use a plastic blade to pry the BEZEL METAL VERSION 2 - 30 V1.0...
  • Page 31 Disassembly Procedure PLATIC VERSION Notice: Use the thinner plastic blade to pry up the edge . The plastic blade thickness : Please refer to the Gap Step of LCD Bezel to Panel on the last page. Tips : Usually, it is hard to pry up the inside edge follow below position directly. 2 - 31 V1.0...
  • Page 32 Disassembly Procedure inside outside First, Use the thinner plastic blade to pry up the red frame area of outside edge. Second, insert the thinner plastic blade into the gap and don’t push too hard, disconnect the hooks follow the direction of the red arrow slowly. 2.
  • Page 33 Disassembly Procedure ( PLATIC VERSION) 3.Remove the LCD ADHESIVE.( METAL and A METAL VERSION) 2 - 33 V1.0...
  • Page 34 Disassembly Procedure Remove the LCD ADHESIVE.( PLATIC VERSION) ADHESIVE 2 - 34 V1.0...
  • Page 35 Disassembly Procedure Notice : Please slowly pull the adhesive up about 30 degree. 30゜ 3. Disconnect the EDP Cable ( METAL and A METAL VERSION) ( PLATIC VERSION) 2 - 35 V1.0...
  • Page 36 Disassembly Procedure 4. Remove the camera and disconnect the camera cable 2 - 36 V1.0...
  • Page 37 Disassembly Procedure 5.Remove the WIFI MAIN ANTENNA 2 - 37 V1.0...
  • Page 38 Disassembly Procedure Assembly notice: If the hinge gasket is torn off, replace it, the gasket location please follow the picture. The attachment position is as follows, the distance from the left and right edge of the PANEL is 24.45mm, the release mold (red box) is aligned with the side edge of the PANEL to attach 2.
  • Page 39 Disassembly Procedure Parts ⚫ X421FA EDP CABLE *1 ⚫ X421FA CMOS CABLE *1 ⚫ LCD 14.0' FHD VWV EDP *1 ⚫ I421FA-9E HINGE COVER ASSY *1 ⚫ X421FA-8G LCD COVER ASSY VB *1 ⚫ X421FA-8R LCD BEZEL ASSY VB *1 ⚫...

This manual is also suitable for:

X421eayX421eaX421fayX421eqX421eqyX421epy

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