Source: steps rewritten in our own words (no more than 8 words in a row copied; part numbers, screw sizes and warnings kept as printed) from HP's Maintenance and Service Guide (PDF, printed pages 108–114). Not bench-tested. We have not performed this repair; keep HP's manual open for its illustrations. Scope restrictions below are part of the guide: do not apply it to other models, generations or configurations. Service manuals are written for trained technicians; work at your own risk.
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 G1. Confirm the exact model on the service label before starting.
HP EliteBook 840 G1 Notebook PC display assembly replacement. HP prints this procedure on printed page 108 of its maintenance and service guide.
tools and parts
- Flat-bladed drivers, Magnetic drivers and Phillips P0 and P1 drivers
- Static-safe work surface
- No spare part number for this component was found in the cached manual
737735-001- Display assembly, 14-inch, HD+, for use in HP EliteBook 740/840 models. Source: printed page 108.739848-001- Display assembly, 14-inch, HD+, for use in HP ZBook 14 models. Source: printed page 108.766680-001- Display assembly, 15-inch, HD, for use in HP EliteBook 750/850 models. Source: printed page 108.730949-001- Display bezel for use in HP EliteBook 740/840 models. Source: printed page 108.730948-001- Display bezel for use in HP ZBook 14 models. Source: printed page 108.730811-001- Display bezel for use in HP EliteBook 850 models. Source: printed page 108.
preparation
HP prints its tools list and its handling and electrostatic-discharge cautions on printed page 53. 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
- Detach the display panel cable from the system board. (printed page 108).
- Let go of the wireless antenna cables off the routing channel attached to the system board. (printed page 109).
- Take out the four Torx TM2.5×6.0 screws that hold the display panel to the computer. (printed page 109).
- Rotate the display hinges upward to an angle until the top cover is free for removal. (printed page 109).
- Separate the display from the top cover (3). (printed page 109).
- If you need to remove bezel, lift to disengage bezel on the bottom, left and right sides (2), and top (3). (printed page 109).
- Lift the bezel off the display assembly (4). (printed page 110).
- If you need to remove raw display panel, remove four Phillips PM2.0×3.0 screws that hold the display panel to the display enclosure. (printed page 110).
- Lift and rotate the panel onto the computer. (printed page 110).
- Lift the tape that holds the display cable to the display panel, and the disconnect the display cable off the panel (2). (printed page 111).
- Lift the display panel from the display enclosure. (printed page 112).
- If you need to replace webcam/microphone module: (printed page 112).
- If you need to remove display hinges, remove six broadhead Phillips PM 2.0×2.0 screws, and then lift hinges from the display enclosure (2). (printed page 113).
- If you need to remove display cable, lift cable straight up and out of display enclosure. Use following image to properly route the cable. (printed page 113).
- If you need to replace WLAN antenna cables and transceivers: a. Release antenna cables from the clips and routing channel built into the display enclosure. (printed page 113).
- Put the display assembly back by repeating the printed removal moves in the opposite order (printed page 114).
Part numbers in our catalog
- HP 14-inch display panel 737657-001 (737657-001)
- HP 14-inch display panel 737658-001 (737658-001)
- HP 14-inch display panel 737659-001 (737659-001)
- HP 15.6-inch display panel 733684-001 (733684-001)
- HP 15.6-inch display panel 733685-001 (733685-001)
- HP HD+ 14-inch display assembly, for 740/840 models 737735-001 (737735-001)
- HP Display enclosure (includes 4 transceivers with antennas) fo 730949-001 (730949-001)
- HP (39 Display enclosure (includes 4 transceivers with antennas 730811-001 (730811-001)
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-g1-display-assembly-replacement