dynabook PORTEGE X40-J Series Maintenance Manual

Maintenance Manual (960-942) 4-29
Replacement Procedures
4.21.1 Removing the System board
To remove the system board, follow the steps below and refer to Figure 4-
34 to Figure 4-36.
1. Disconnect the Keyboard FPC from the connector CN3260 and
Keyboard Backlight harness from the connector CN3240 on the
System Board (FSAPSY*).
■ When replacing the system board with a new one, stick three pieces of
new GUM CUSHION and one piece of new CUSHION LED on one
side of the system board in place.
■ When replacing the system board with a new one, stick two pieces of
new COOL SHEET on the other side of the system board in place.
CUSHION LED
COOL SHEET

dynabook PORTEGE X40-J Series Specifications

General

Graphics	Intel Iris Xe Graphics
Wireless	Wi-Fi 6 (802.11ax), Bluetooth 5.1
Processor	Up to 11th Gen Intel® Core™ i7 Processors
Display	14.0" FHD (1920 x 1080) Anti-glare
RAM	Up to 32GB DDR4
Storage	Up to 1TB PCIe SSD
Operating System	Windows 10 Pro
Weight	Approx. 1.05 kg
Security	Fingerprint Reader, TPM 2.0
Ports	2 x Thunderbolt 4, 1 x USB 3.2, HDMI, microSD card slot