Service Teardown: HP Engage One Pro AIO System
How to replace the VESA Hub -
Removal
Slide the VESA hub cover straight up and off the VESA hub.
Loosen the two captive P2 Phillips-head screws that secure the VESA hub to the computer.
Using the arrow on the VESA hub for guidance,
slide the VESA hub to disconnect it from the motherboard.
Lift the VESA hub straight up and out of the computer.
Replacement
Align the VESA hub connector with cutout in the back plate and lower it into position on the computer.
To connect the VESA hub to the computer,
slide it in the opposite direction of the arrow on top of the VESA hub.
Tighten the two captive P2 Phillips-head screws that secure the VESA hub to the computer.
Slide the VESA hub cover onto the VESA hub.
How to replace the Back Plate
Before you begin: Remove the stand.
Removal
Loosen the captive P1 Phillips-head screw that secures the back plate to the computer.
Slide the back plate toward the bottom edge of the computer.
Lift the back plate straight up and out of the computer.
Replacement
Align the back plate with the computer and lower it into position.
Slide the back plate toward the top edge of the computer.
Tighten the captive P1 Phillips-head screw that secures the back plate to the computer.
How to replace the Expansion Slot Covers
Before you begin: Remove the stand and back plate.
Removal
Loosen the two captive P1 Phillips-head screws that secure the slot covers to the computer.
Slide the slot covers out of the computer and remove.
Replacement
Slide the slot covers into the computer until it is flush with the edge of the bezel.
Tighten the two captive P1 Phillips-head screws that secure the slot covers to the computer.
How to replace the Fingerprint Reader
Before you begin: Remove the stand and back plate.
Removal
IMPORTANT:
The removal of the fingerprint reader dummy is shown in this video.
The removal and replacement of the dummy is very similar to the procedure for the fingerprint reader itself.
Remove the fingerprint reader cover from the computer.
Loosen the captive P1 Phillips-head screw that secure the fingerprint reader to the computer.
Slide the fingerprint reader out of the computer and disconnect the fingerprint reader cable.
Remove the fingerprint reader.
Replacement
Connect the fingerprint reader cable into the fingerprint reader.
Insert the fingerprint reader into the cutout in the computer.
Tighten the captive P1 Phillips-head screw that secures the fingerprint reader to the computer.
Replace the fingerprint reader cover.
How to replace the Magnetic Strip Reader
Before you begin: Remove the stand and back plate.
Removal
NOTE:
This is a preproduction model.
Production models will have a bracket that partially covers the magnetic strip reader.
Loosen the two captive P1 Phillips-head screws that secure the reader to the computer.
Slide the reader out of the computer and disconnect it from the reader cable.
Remove the reader.
Replacement
Connect the reader cable into the connector on the reader board.
Insert the reader into the computer.
Tighten the two captive P1 Phillips-head screws that secure the reader to the computer.
How to replace the M.2 Solid State Drive
Before you begin: Remove the stand and back plate.
Removal
Loosen the two captive P1 Phillips-head screws that secure the solid state drive cover to the computer.
Lift the edge of the solid state drive cover and slide it out of the cutouts in the computer.
Remove the P1 Phillips-head screw that secures the solid state drive to the motherboard.
Grasp the solid state drive by the edges and pull gently to remove it from the slot on the motherboard.
Replacement
Align the notch in the solid state drive with the key in the solid state drive slot on the motherboard.
Gently insert the solid state drive into its slot on the motherboard.
Replace the 3 mm P1 Phillips-head screw that secures the solid state drive to the motherboard.
Insert the solid state drive cover into the cut outs in the computer and lower it into position.
Tighten the two captive P1 Phillips-head screws that secure the solid state drive cover to the computer.
How to replace the Motherboard Cover
Before you begin: Remove the stand and back plate.
Removal
Loosen the twelve captive P1 Phillips-head screws that secure the edge of the motherboard cover to the computer.
Loosen the seventeen captive P1 Phillips-head screws that secure the motherboard cover to the computer.
Carefully release the motherboard cover from the retention clips that secure it to the computer and remove.
Replacement
Align the motherboard cover with the computer and lower into position.
Apply pressure around the edges of the motherboard cover to secure it to the computer.
Tighten the seventeen captive P1 Phillips-head screws that secure the motherboard cover to the computer.
Tighten the twelve captive P1 Phillips-head screws that secure the edge of the motherboard cover to the computer.
How to replace the Memory Modules
Before you begin: Remove the stand, back plate, and motherboard cover.
Removal
Insert a non-metallic flat-bladed tool at the tab and slide the protective shield out of the retention clips on the motherboard.
Push both arms outward simultaneously to release the memory module to the spring tension position.
Grasp the memory module by the edges and pull gently to remove it from the slot on the motherboard.
Remove the memory module.
Replacement
Align the notch in the memory module with the key in the memory module slot on the motherboard.
At an angle, gently insert the memory module into its slot on the motherboard.
Push down on the edge of the memory module until the arms click into place.
Slide the protective shield into the retention clips on the motherboard.
How to replace the Wireless LAN Module
Before you begin: Remove the stand, back plate, and motherboard cover.
Removal
CAUTION! Use care when disconnecting the wireless antenna cable from the WLAN module.
A damaged cable or connector can degrade performance.
Carefully remove the antenna connector cover from the WLAN module.
Carefully disconnect the WLAN antenna cables
from the WLAN module by grasping the connectors with a small pair of needle nose pliers or tweezers.
Remove the P1 Phillips-head screw that secures the WLAN module to the motherboard.
Grasp the WLAN module by the edges and pull gently to remove it.
Replacement
Align the notch in the WLAN module with the key in the WLAN module slot on the motherboard.
At an angle, gently insert the WLAN module into its slot on the motherboard.
Replace the P1 Phillips-head screw that secures the WLAN module to the motherboard.
Carefully reconnect the WLAN antenna cables to the WLAN module.
Carefully clip the antenna connector cover onto the WLAN module.
How to replace the NFC Module
Before you begin: Remove the stand, back plate, and motherboard cover.
Removal
Using minimal force, lift the locking bar up on the NFC module ZIF connector
and disconnect the NFC module ribbon cable from the motherboard.
Release the NFC module from the retention clips and slide it up and out of the computer.
Replacement
Slide the NFC module into the computer until the retention clips engage.
Insert the NFC module ribbon cable into the ZIF connector on the motherboard
and press the locking bar down to lock the cable into place.
How to replace the Power Button Board
Before you begin: Remove the stand, back plate, and motherboard cover.
Removal
Using minimal force, lift the locking bar up on the power button board ZIF connector
and disconnect the power button board ribbon cable from the power button board.
Remove the two P1 Phillips-head screws that secure the power button board to the computer.
Lift the top edge of the power button board, slide it out from under the display bezel, and remove.
Replacement
Toe the bottom edge of the power button board under the display bezel and lower it into position on the computer.
Replace the two P1 Phillips-head screws that secure the power button board to the computer.
Insert the power button board ribbon cable into the ZIF connector on the power button board
and press the locking bar down to lock the cable into place.
How to replace the Speakers
Before you begin: Remove the stand, back plate, and motherboard cover.
Removal
Disconnect the speaker cable from the connector on the motherboard.
Remove the speaker cable from the routing channel on the computer.
Remove the four P1 Phillips-head screws that secure the speakers to the computer.
Lift the speakers off the stand offs on the computer and remove.
Replacement
Place the speakers onto the stand offs on the computer.
Replace the four P1 Phillips-head screws that secure the speakers to the computer.
Route the speaker cable through the routing channel on the computer.
Connect the speaker cable into the connector on the motherboard.
How to replace the CMOS Battery
Before you begin: Remove the stand, back plate, and motherboard cover.
Removal
Carefully release the CMOS battery from the socket retention clips that secure it on the motherboard and remove.
Replacement
Carefully secure the CMOS battery under the socket retention clips on the motherboard.
How to replace the Fans
Before you begin: Remove the stand, back plate, and motherboard cover.
Removal
Disconnect the fan cable from the connector on the motherboard.
Remove the three P1 Phillips-head screws that secure the fan to the computer.
Lift the fan, slide it out from under the heatsink mylar, and remove.
The remaining fan is removed in the same manner.
Replacement
Slide the fan under the heatsink mylar and lower it into position on the computer.
Replace the three P1 Phillips-head screws that secure the fan to the computer.
Connect the fan cable into the connector on the motherboard.
The remaining fan is replaced in the same way.
How to replace the Backlight Board
Before you begin: Remove the stand, back plate, and motherboard cover.
Removal
Disconnect the two cables from the connectors on the backlight board.
Remove the two P1 Phillips-head screws that secure the backlight board to the computer.
Lift the backlight board off of the computer and remove.
Replacement
Place the backlight board into position on the computer.
Replace the two P1 Phillips-head screws that secure the backlight board to computer.
Connect the two cables into the connectors on the backlight board.
How to replace the Expansion USB Cables
Before you begin: Remove the stand, back plate, and motherboard cover.
Removal
Disconnect the USB cable from the connector on the motherboard.
Remove the two P1 Phillips-head screws that secure the USB cable to the computer.
Lift the USB cable off of the computer and remove.
The remaining USB cables are removed in the same manner.
Replacement
Place the USB cable into position on the computer.
Replace the two P1 Phillips-head screws that secure the USB cable to the computer.
Connect the USB cable into the connector on the motherboard.
The remaining USB cables are replaced in the same way.
How to replace the Heatsink
Before you begin: Remove the stand, back plate, and motherboard cover.
Removal
Note: The heatsink has numbers adjacent to the following four screws.
Loosen the four captive T15 Torx-head screws that secure the heatsink over the processor in numerical order.
Loosen the captive T15 Torx-head screw that secures the heatsink to the computer.
Lift the heatsink straight up and off the processor and remove it from the computer.
Replacement
Using an alcohol swab, carefully remove the thermal grease from the heatsink and processor.
According to the individual specifications for your particular processor,
apply new thermal grease to the processor.
Align the screw holes on the heatsink with the stand offs on the motherboard
and lower the heatsink into position over the processor.
Tighten the four captive T15 Torx-head screws that secure the heatsink over the processor in numerical order.
Tighten the captive T15 Torx-head screw that secures the heatsink to the computer.
How to replace the CPU
Before you begin: Remove the stand, back plate, motherboard cover, and heatsink.
Removal
Lift the locking lever until it is fully upright.
Swing the microprocessor retainer to its fully open position.
IMPORTANT: Identify the pin 1 triangle on the socket and CPU prior to removing the CPU.
IMPORTANT: When handling the CPU, do not touch the CPU contacts.
Carefully lift the CPU straight up and out of the socket.
Replacement
Align the pin 1 triangle on the CPU with the pin 1 triangle on the socket.
Carefully lower the CPU into position in the socket.
Swing the microprocessor retainer down.
Position the locking lever under the retaining tab to secure the CPU in place.
How to replace the Motherboard
Before you begin: Remove the stand, back plate, motherboard cover, WLAN module, speakers, fans, and heatsink.
Removal
IMPORTANT: Make careful note of the location of all cables connected to the motherboard for later replacement.
Disconnect all cables from the connectors on the motherboard.
Remove the seven P1 Phillips-head screws that secure the motherboard to the chassis.
Carefully lift the motherboard up off the chassis and remove.
Replacement
IMPORANT: If installing a new motherboard,
remove all components from the old motherboard and install on the new motherboard.
Place the motherboard into position on the chassis.
Replace the seven P1 Phillips-head screws that secure the motherboard to the chassis in numerical order.
Connect all cables into the connectors on the motherboard.