dynabook PORTEGE X40-J Series Maintenance Manual

Maintenance Manual (960-942) 2-1
Chapter 2
Troubleshooting Procedures
2.1 Troubleshooting
This chapter describes how to determine which Field Replaceable Unit
(FRU) in the computer is causing the computer to malfunction. (The “FRU”
means the replaceable unit in the field.) The FRUs covered here are as
follows:
1. Power supply
2. System Board
3. USB
4. M.2 SSD
5. Keyboard
6. Touch Pad (Click Pad)
7. Display
8. Wireless LAN + Bluetooth
9. Sound
10. Memory media (SD Card) slot
11. Fingerprint sensor
12. Web camera
13. HDMI
14. USB Type-C adapter
* Please note that some units are installed only on some models.
The Test Program operations are described in Chapter 3, Tests and
Diagnostics. Detailed Replacement Procedures are described in Chapter
4.

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