2 Troubleshooting Procedures
dynabook PORTEGE A30-E/TECRA A30-G,-J/dynabook S Series Maintenance Manual(960-931) [CONFIDENTIAL] 2-1
2.1 Troubleshooting
Chapter 2 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 are:
1. Power supply
2. System Board
3. USB
4. M.2 SSD
5. Keyboard
6. Touch Pad (Click Pad)
7. Display (LCD)
8. Optical Disk Drive: Not used
9. LAN
10. Wireless LAN +Bluetooth
11. 3G/LTE: Not used
12. WiGig: Not used
13. Sound
14. Memory media (micro SD Card) slot
15. Fingerprint sensor
16. Web camera
17. HDMI port
18. USB Type-C adapter
The Test Program operations are described in Chapter 3. Detailed procedures for replacement
are described in Chapter 4.
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