Macbook Neo A3404 LCD Screen:
https://moverapple.com/products/macbook-air-pro-neo-genuine-lcd-display-screen-a3401-a3402-a3403-a3404-a3434-a3448-a3449?VariantsId=10909


MacBook Neo (Model A3404) LCD Screen Replacement Instruction Manual

Table of Contents

1. Important Safety Warnings
2. Required Tools & Replacement Parts
3. Pre‑Repair Preparation
4. Old LCD Display Removal Procedures
5. New LCD Panel Installation Steps
6. Re‑assembly
7. Post‑Installation Testing
8. Troubleshooting
9. Warranty Notice

1. Important Safety Warnings

Read all warnings before starting the repairApple Supp....

• Power off the MacBook completely, disconnect all USB‑C power adapters and peripherals.
• Work on an ESD‑protected anti‑static mat, wear anti‑static wrist strap to avoid static damage to logic board and display flex cables.
• Discharge battery power below 25% before disassembly to reduce short‑circuit and fire risk.
• Do NOT touch gold‑plated contacts on flex cables with bare fingers; oil contamination causes display flicker, no‑image or backlight failure.
• Ribbon flex cables are fragile. Never pull, twist or bend cables at sharp angles.
• Unauthorized opening will void official Apple factory warranty. Repair‑caused damage is not covered by original manufacturer warrantyApple Supp....
• If battery appears swollen, stop repair immediately and handle battery with caution.

2. Required Tools & Replacement Parts

Tools

• Adjustable torque screwdriver (0.3‑1.2 Nm)
• Torx Plus 8IP 25 mm screwdriver bit
• Pentalobe screwdriver bit (for bottom case)
• Nylon spudger / black‑stick nylon probe
• Anti‑static wrist strap & anti‑static work mat
• Non‑abrasive lint‑free microfiber cloth
• Tweezers (plastic insulated type)

Replacement Part

• Compatible LCD Screen Panel for MacBook Neo A3404
• Matching hinge screws (new set recommended; reuse old screws is not advised)

3. Pre‑Repair Preparation

1. Shut down macOS fully, close the laptop lid, place the unit upside‑down on anti‑static mat.
2. Remove all Pentalobe screws securing the bottom case. Keep screws sorted by length and position.
3. Pry and lift off the bottom case cover with nylon spudger.
4. Locate battery connector cover. Remove fixing screws, use nylon probe to safely disconnect battery flex cable from logic board.
5. Wait 60 seconds for mainboard residual power discharge before proceeding with further disassemblyApple Supp....
6. Remove antenna module assembly to access display internal connectors.

4. Old LCD Display Removal Procedures

1. Flip up locking bar of main display flex cable, gently slide out the display flex cable from the logic‑board connector.
2. Release locking bar for camera / ambient‑light‑sensor (ALS) flex cable; pull the cable out carefully. Lift cable out from foam routing channelApple Supp....
3. Fully open the MacBook lid. Place the whole unit face‑down on clean work surface; let the display assembly hang over the edge of work table.
4. Secure display assembly by hand. Use torque driver with 8IP bit to remove four hinge mounting screws.
5. Slowly lift the complete display assembly away from top‑case housing. Make sure no cables get caught or pinched during lifting.
6. Place the full display‑lid assembly on soft anti‑static surface. Remove mounting brackets, then detach the damaged old LCD panel from lid frame.
7. Transfer camera module, microphone and antenna accessories from old screen frame to new LCD panel carefully.

5. New LCD Panel Installation Steps

1. Unpack brand‑new A3404 LCD screen. Hold panel only by frame edges. Do not press on LCD surface.
2. Align new LCD panel inside display lid frame. Re‑install metal mounting brackets.
3. Route camera, ALS and antenna cables back into original foam channels; avoid cable pinching.
4. Position complete display assembly back onto the MacBook top‑case hinge position. Keep flex cables routed without twisting.
5. Re‑insert camera / ALS flex cable into connector; close down connector locking bar firmly.
6. Insert main display flex cable fully into its socket; flip locking bar down to lock cable in place.

Confirm cables are fully seated; partial insertion leads to black screen, flickering or vertical lines.

6. Re‑assembly

1. Set proper torque value (0.6‑1.1 Nm) on adjustable screwdriver. Fit brand‑new hinge screws into hinge holes in correct sequence. Do not over‑torque screws; overtightening will crack LCD panel.Apple Supp...
2. Re‑install antenna module back into original position.
3. Reconnect battery flex cable, reinstall battery connector protective cover and its fixing screws.
4. Fit bottom case back onto chassis; install all bottom‑case Pentalobe screws in original locations.

7. Post‑Installation Testing

1. Connect USB‑C power adapter, power‑on the MacBook.
2. Verify:
   • Normal boot‑up, no black screen / no backlight fault
   • Full uniform display, no flicker, no vertical / horizontal lines
   • Camera function working normally
   • Ambient light sensor auto‑brightness response
   • Lid opening / closing sleep‑wake function works correctly
3. Run built‑in Apple diagnostics to check display hardware status.

Note: For genuine‑part repair, execute Repair Assistant tool inside macOS to finish part calibration after hardware installationApple Supp.... Third‑party replacement panels may disable True‑Tone function.

8. Troubleshooting

9. Warranty Notice

• This repair manual is for technical‑operator reference only. Improper installation‑caused panel crack, cable damage or mainboard burnout shall not be covered by supplier part warranty.
• Properly recycle cracked broken LCD panels according to local electronic‑waste regulations.
• Keep old damaged screen for return‑merchandise‑authorization (RMA) process if required by your supplier.