Maintenance and Service Guide

WWAN module

Description Spare part number

HP hs3110 HSPA+ Mobile Broadband Module 748599-005

HP lt4111 LTE/EV-DO/HSPA+ Gobi 4G Module 704030-005

HP lt4112 LTE/HSPA+ Gobi 4G Module 740011-005

HP lt4225 LTE/EV-DO Gobi 4G Module 736676-005

HP lt4226 LTE/HSPA+ Gobi 4G Module 736675-005

Before removing the WWAN module, follow these steps:

1. Turn off the tablet. If you are unsure whether the tablet is off or in Hibernation, turn the tablet on,

and then shut it down through the operating system.

2. Disconnect the power from the tablet by unplugging the power cord from the tablet.

3. Disconnect all external devices from the tablet.

4. Remove the display assembly (see

Display assembly on page 30).

5. Remove the NFC antenna (see

NFC antenna on page 38).

Remove the WWAN module:

1. Release the grounding tape (1) that secures the WWAN module to the system board.

2. Disconnect the WWAN antenna cables (2) from the terminals on the WWAN module.

NOTE: The WWAN antenna cable labeled “5” connects to the WWAN module “MAIN”

terminal labeled “5”. The WWAN antenna cable labeled “6” connects to the WWAN module

“AUX/GPS” terminal labeled “6”.

3. Remove the Phillips PM1.3×1.5 broad head screw (3) that secures the WWAN module to the

bottom cover.

Tablet component replacement procedures