HP EliteBook 840 G1 system board replacement

Step-by-step HP EliteBook 840 G1 system board replacement rewritten in our own words from HP's Maintenance and Service Guide, with page citations.

Part you need730959-001HP Power button board with cable 730959-001 for the HP EliteBook 840 G1
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On this page
  1. Applies to
  2. tools and parts
  3. preparation
  4. replacement
  5. Part numbers in our catalog
  6. Manufacturer manual
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 102–105). 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 system board replacement. HP prints this procedure on printed page 102 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

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

  1. Position computer upright and open as far as possible. (printed page 102).
  2. Let go of ZIF connector to which fingerprint reader cable is connected, and then disconnect fingerprint reader cable from the system board. (printed page 103).
  3. Close the computer and position it upside down. (printed page 103).
  4. Detach the smart card reader cable from the smart card reader. (printed page 103).
  5. Detach the VGA/USB board cable from the system board. (printed page 103).
  6. Detach the power button board cable off the system board. (printed page 103).
  7. Let go of display panel cable off routing channel attached to system board, and then disconnect display panel cable from the system board. (printed page 103).
  8. Detach the speaker cable from the system board. (printed page 103).
  9. Note the routing location of the antenna cables when removing them. (printed page 104).
  10. Take out the three Phillips PM2.5×5.0 screws that hold the system board to the top cover. (printed page 104).
  11. Lift the left side of the system board. (printed page 104).
  12. Take out system board by sliding it up and to left at an angle. (printed page 105).
  13. Put the system board back by repeating the printed removal moves in the opposite order (printed page 105).

Part numbers in our catalog

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-system-board-replacement-p102

Key facts

HP document part number
734761-003
Model
HP EliteBook 840 G1
Release year
2013
Screen size
14"
Printed pages
102–105

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