dynabook TECRA A40-J Series Maintenance Manual

Maintenance Manual (960-945) 4-27
Replacement Procedures
4.22.2 Installing the 3G antennas
To install the 3G antennas, follow the steps below and refer to Figure 4-29
to Figure 4-30.
1. Stick new 3G antennas (AUX/Main) in place.
2. Arrange the 3G antenna cables and SAR harness in place on the
Cover Assembly, and fix them with the stick stapes.
3. Connect the SAR harness to the connector CN2650 on the USB board
(FMERLT*).
4.23 System board
4.23.1 Removing the System board
To remove the system board, follow the steps below and refer to Figure 4-
31 to Figure 4-33.
1. Disconnect the Keyboard FPC from the connector CN3240 and
Keyboard Backlight harness from the connector CN3270 on the
System Board (FMERSY*).
1. If replacing with a new system board, update the DMI information as
described in Chapter 3, Tests and Diagnostics. Also update with the
latest BIOS and EC/KBC as described in Appendix G, BIOS Rewrite
Procedures, and Appendix H, EC/KBC Rewrite Procedures.
2. When replacing the system board with a new one, the ProductKey
(MBR-DPK) must be written on the system board.
3. When removing/installing the system board, do not handle with the
handling prohibition area.

dynabook TECRA A40-J Series Specifications

General

Operating System	Windows 10 Pro
Battery Life	Up to 10 hours
Graphics	Intel Iris Xe Graphics
Bluetooth	Bluetooth 5.1
Processor	Intel Core i5-1135G7 or i7-1165G7
Display	14.0" FHD (1920 x 1080) Anti-Glare
RAM	8GB/16GB DDR4
Storage	256GB/512GB SSD
Wireless	Intel Wi-Fi 6 AX201
Ports	2 x USB 3.2 Type-A, 1 x USB 3.2 Type-C, HDMI, Ethernet, MicroSD card slot
Security	Fingerprint Reader, TPM 2.0
Webcam	HD Webcam