Labels: DOCUMENTED = taken from HP's manual; PROPOSED = our own joining or ordering of HP's directions, not an HP instruction; UNPERFORMED = a suggested check that has not been carried out.
Applies to
HP EliteBook 840 G3. Confirm the exact model on the service label before starting.
HP EliteBook 840 G3 Notebook PC display assembly replacement. HP prints this procedure on printed page 76 of its maintenance and service guide, and the spare-part table for this part is on printed page 76.
tools and parts
- Phillips P0 drivers
- Static-safe work surface
821178-001- Display panel assembly, touch screen for HP EliteBook 848 and HP EliteBook 840. Source: printed page 76.821196-001- Display panel assembly, touch screen for HP EliteBook 850. Source: printed page 76.827872-001- Display panel assembly, touch screen for HP ZBook 15u. Source: printed page 76.
preparation
HP prints its tools list and its handling and electrostatic-discharge cautions on printed page 30. Work on a grounded, static-safe surface, keep screws grouped by the position they came from, and handle boards and modules by their edges.
replacement
- Position the computer upside down. (printed page 76).
- Detach the display cable from the system board. (printed page 76).
- Take out WLAN antennas and WWAN antennas (if equipped) from routing path along the base of the computer. (printed page 76).
- On a 14” computer, remove 5 Phillips PM2.5×5.0 screws from the display hinges. (printed page 77).
- Lift display assembly straight up and remove it (2). (printed page 77).
- If you need to remove display bezel, flex top of bezel, inside edges of the left and right sides, and then the bottom of the bezel until it disengages from the panel enclosure.. (printed page 78).
- Take out the display bezel (4). (printed page 78).
- If it is necessary to replace webcam or microphone module, gently pull module away from double-sided tape on display enclosure (1), and then disconnect cable from the module (2). (printed page 78).
- If it is necessary to remove display panel from the enclosure (printed page 79).
- Rotate display panel all way over (1), disconnect display cable from rear of panel (2), and then remove display panel from the enclosure. (printed page 79).
- If it is necessary to replace display hinges, remove 1 Phillips PM2.0×3.0 screw that hold hinge covers to display enclosure, and then remove the hinge covers. (printed page 79).
- Take out 6 Phillips PM2.5x2.5 screws hold hinges to display enclosure, and then remove display hinges from the display enclosure. (printed page 80).
- If it is necessary to replace display/webcam cable, lift display/webcam cable assembly (1 ) from the routing and disconnect the cable if needed (3). (printed page 80).
- Put the display assembly back by repeating the printed removal moves in the opposite order (printed page 80).
Part numbers in our catalog
- HP HD raw display panel (823950-001)
- HP FHD raw display panel (823951-001)
- HP QHD raw display panel (823952-001)
- HP FHD raw display panel (EliteBook 850) (824516-001)
- HP UHD raw display panel (EliteBook 850) (824517-001)
- HP HD raw display panel (EliteBook 850) (824515-001)
- HP Display panel assembly, touch screen, EliteBook 848/840 821178-001 (821178-001)
- HP FHD UVWA raw panel, ZBook 15u 827870-001 (827870-001)
- HP UHD raw panel, ZBook 15u 827871-001 (827871-001)
- HP FHD SVA raw panel, ZBook 15u 827869-001 (827869-001)
- HP Display panel assembly, touch screen, EliteBook 850 821196-001 (821196-001)
- HP Display panel assembly, touch screen, ZBook 15u 827872-001 (827872-001)
Check each part page for its source and variant notes before ordering.
Manufacturer manual
HP Maintenance and Service Guide (PDF, HP). Machine-readable copy: /api/guides/hp-elitebook-840-g3-display-assembly-replacement-p76