Service Teardown: HP Chromebox Enterprise G2
How to Replace the Bottom Cover
Removal -
On the bottom of the unit, remove the four rubber feet from the bottom cover.
Remove the four 4 mm P1 Phillips-head screws that secure the bottom cover to the middle frame.
Lift the bottom cover off of the middle frame and remove.
Replacement
Align the two alignment posts on the bottom cover with the bottom shielding
and place the bottom cover into position on the middle frame.
Replace the four 4 mm P1 Phillips-head screws that secure the bottom cover to the middle frame.
Replace the four rubber feet onto the bottom cover.
How to Replace the I/O Frame
Before you begin: Remove the base cover.
Removal -
Remove the two 4 mm P1 Phillips-head screws that secure the I/O frame to the bottom shielding.
Remove the mylar that covers the top of the I/O frame.
Lift the top of the I/O frame off of the alignment posts,
carefully release retention tabs on the left and right edges of the I/O frame, and remove it from the top cover.
Replacement -
Toe the lower edge of the I/O frame into the top cover
and press gently apply pressure until the I/O frame retention tabs snap into place.
Replace the mylar that covers the top of the I/O frame.
Replace the two 4 mm P1 Phillips-head screws that secure the I/O frame to the bottom shielding.
How to Replace the Bottom Shielding
Before you begin: Remove the base cover and I/O frame.
Removal -
IMPORTANT: Make note of the position of the bottom shielding mylar for later replacement.
Remove the mylar that secures the bottom shielding to the middle frame.
Remove the four 4 mm P1 Phillips-head screws that secure the bottom shielding to the middle frame.
Lift the bottom shielding straight up until it is free from the middle frame
and turn it over so you have access to the DC-in cable connector on the system board.
Disconnect the DC-in cable from the connector on the system board.
Remove the bottom shielding.
Replacement -
IMPORTANT: If you are replacing the bottom shielding, the DC-in connector will need to be removed from the old bottom shielding
and attached to the new bottom shielding.
Connect the DC-in cable into the connector on the system board.
Align the edges of the bottom shielding with the sides of the middle frame and lower it into position.
Replace the four 4 mm P1 Phillips-head screws that secure the bottom shielding to the middle frame.
Replace the mylar that secures the bottom shielding to the middle frame.
How to Replace the Memory Module(s)
Before you begin: Remove the base cover, I/O frame, and bottom shielding.
Removal -
Carefully separate the edges of the memory shield from the retention clips on the system board and remove.
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.
Replacement -
Align the notch in the memory module with the key in the memory module slot on the system board.
At an angle, gently insert the memory module into its slot on the system board.
Press the memory module down to latch the arms.
Align the edges of the memory shield with the retention clips on the system board
and place the memory shield into position over the memory modules.
How to Replace the DC-in Cable
Before you begin: Remove the base cover, I/O frame, and bottom shielding.
Removal -
Remove the two 4 mm P1 Phillips-head screws that secure the DC-in bracket to the bottom shielding.
Lift the DC-in bracket off of the DC-in cable and remove.
Lift the DC-in cable off of the bottom shielding and remove.
Replacement -
Place the DC-in cable into position on the bottom shielding.
Place the DC-in bracket onto the DC-in cable.
Replace the two 4 mm P1 Phillips-head screws that secure the DC-in bracket to the bottom shielding.
How to Replace the CMOS Battery
Before you begin: Remove the base cover, I/O frame, and bottom shielding.
Removal -
Carefully release the CMOS battery from the socket retention clips that secure it on the system board and remove.
Replacement -
Carefully secure the CMOS battery under the socket retention clips on the system board.
How to Replace the Wireless LAN Module
Before you begin: Remove the base cover, I/O frame, and bottom shielding.
Removal -
CAUTION! Use care when disconnecting the wireless LAN antenna cables from the wireless LAN module.
A damaged cable or connector can degrade performance.
Carefully disconnect the wireless LAN antenna cables from the wireless LAN module
by grasping the connectors with a small pair of needle nose pliers or tweezers.
Remove the 3 mm P1 Phillips-head screw that secures the wireless LAN module to the system board
and allow it to release to the spring tension position.
Grasp the wireless LAN module by the edges and pull gently to remove it from the slot on the system board.
Replacement -
Align the notch in the wireless LAN module with the key in the wireless LAN module slot on the system board.
At an angle, gently insert the wireless LAN module into the slot on the system board.
Replace the 3 mm P1 Phillips-head screw that secures the wireless LAN module to the system board.
Reconnect the wireless LAN antenna cables to the wireless LAN module.
CAUTION! Use care when connecting the wireless antenna cables to the wireless LAN module.
A damaged cable or connector can degrade performance.
How to Replace the M.2 Solid State Drive
Before you begin: Remove the base cover, I/O frame, bottom shielding, and wireless LAN module.
Removal -
Remove the shielding that covers the solid state drive.
Remove the 3 mm P1 Phillips-head screw that secures the solid state drive to the system board
and allow it to release to the spring tension position.
Grasp the solid state drive by the edges and pull gently to remove it from the slot on the system board.
Replacement -
Align the notch in the solid state drive with the key in the solid state drive slot on the system board.
At an angle, gently insert the solid state drive into its slot on the system board.
Replace the 3 mm P1 Phillips-head screw that secures the solid state drive to the system board.
Align the shielding with the edges of the solid state drive and apply pressure to adhere it into position.
How to Replace the System Board
Before you begin: Remove the base cover, I/O frame, bottom shielding, and wireless LAN module.
Removal -
Disconnect the power button board cable from the connector on the system board.
Remove the three 4 mm P1 Phillips-head screws that secure the system board to the middle frame.
Remove the 3 mm P1 Phillips broad-head screw that secures the system board to the middle frame.
Lift the rear edge of the system board and guide the external connectors on the system board out of the cut outs in the middle frame.
Remove the system board.
Note: Before installing a new system board,
remove the following from the old system board and install onto the new system board:
Memory board(s), Memory shield, Solid state drive
CMOS battery, Fan, Heat Sink
Replacement -
At an angle,
toe the external connectors on the front edge of the system board into the cut outs in the middle frame and lower it into position.
Replace the 3 mm P1 Phillips broad-head screw that secures the system board to the middle frame.
Replace the three 4 mm P1 Phillips-head screws that secure the system board to the middle frame.
Connect the power button board cable into the connector on the system board.
How to Replace the Fan
Before you begin: Remove the base cover, I/O frame, bottom shielding, wireless LAN module, and system board.
Removal -
Disconnect the fan cable from the connector on the system board.
Remove the two 4 mm P1 Phillips-head screws that secure the fan to the heat sink.
Lift the fan off of the stand offs on the heat sink and remove.
Replacement -
Place the fan onto the stand offs on the heat sink.
Replace the two 4 mm P1 Phillips-head screws that secure the system board to the middle frame.
Connect the fan cable into the connector on the system board.
How to Replace the Heatsink
Before you begin: Remove the base cover, I/O frame, bottom shielding, wireless LAN module, system board, and fan.
Removal -
Note: The heat sink has numbers adjacent to the following four screws.
Remove the four 3 mm P1 Phillips-head screws that secure the heat sink over the processor in numerical order.
Note: Due to the adhesive quality of the thermal grease and thermal pads located between the heat sink and processor components,
it may be necessary to move the heat sink from side to side to detach it from the system board.
Lift the heat sink off of the processor and remove.
Replacement -
Using an alcohol swab, carefully remove the thermal grease from the heatsink and processor.
Apply new thermal grease to the processor.
Inspect the thermal pads. If one is torn or otherwise damaged, it needs to be replaced.
Align the screw holes on the heat sink with the stand offs on the system board and place the heat sink into position.
Replace the four 3 mm P1 Phillips-head screws that secure the heat sink over the processor in numerical order.
How to Replace the Middle Frame\Top Cover
Before you begin: Remove the base cover, I/O frame, bottom shielding, wireless LAN module, and system board.
Removal -
Remove the four 4 mm P1 Phillips-head screws that secure the middle frame to the top cover.
Carefully slide the middle frame out of the top cover and remove.
Replacement -
IMPORTANT: If you are replacing the middle frame, the power button board will need to be removed
from the old middle frame and attached to the new middle frame.
Align the sides of the middle frame with the sides of the top cover and slide the middle frame into position on the top cover.
Replace the four 4 mm P1 Phillips-head screws that secure the middle frame to the top cover.
How to Replace the Power Button Board
Before you begin: Remove the base cover, I/O frame, bottom shielding, wireless LAN module, system board, and middle frame.
Removal -
Remove the two 3 mm P1 Phillips-head screws that secure the power button board to the middle frame.
Remove the power button board from the middle frame.
Replacement -
IMPORTANT: If you are replacing the power button board, the power button board cable will need to be removed from the old power button board
and connected to the new power button board.
Place the power button board into position on the middle frame.
Replace the two 3 mm P1 Phillips-head screws that secure the power button board to the middle frame.