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 32–59). 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 ZBook 15 G4. Confirm the exact model on the service label before starting.
HP ZBook 15 G4 Mobile Workstation led board replacement. HP prints the spare part table for this procedure on printed page 59.
Tools and parts
- Torx driver, Magnetic screwdriver and Phillips P0 and P1 screwdrivers
- Static-safe work surface
848246-001- LED board (includes cable). Source: printed page 59.
Preparation
HP prints its tools list and its handling and electrostatic-discharge cautions on printed page 27. 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
- Power the machine down. (printed page 32).
- Detach the power from the notebook by unplugging the power cord from the computer. (printed page 32).
- Detach all external devices from the computer. (printed page 32).
- Take off the bottom cover (see that procedure on page 36). (printed page 37).
- Take off the battery (see that procedure on page 37). (printed page 57).
- Detach the LED board from the system board (1). (printed page 59).
- Lift to free the LED board lead from the adhesive that holds it to the machine (2). (printed page 59).
- Take out the Phillips PM2.5×3.0 screw that holds the LED board to the computer. (printed page 59).
- Take out the LED board (printed page 59).
- Install the led board by working back through the printed removal steps (printed page 59).
Parts this procedure uses
- HP LED board assembly 848246-001 (848246-001)
Manufacturer manual
HP Maintenance and Service Guide (PDF, HP). Machine-readable copy: /api/guides/hp-zbook-15-g4-led-board-replacement-p59