Toshiba Satellite U940 - Troubleshooting Introduction

2 Troubleshooting Procedures
Satellite U900/U940/U945 Series Maintenance Manual
3
2.1 Troubleshooting Introduction
Chapter 2 describes how to determine if a Field Replaceable Unit (FRU) in the computer is
causing the computer to malfunction. The FRUs covered are:
1. Display
7. Wire LAN
13. USB3.0
2. Keyboard
8. Camera
14. LAN
3. USB ports
9. Bluetooth
15.HDD
4. MIC
10. HDMI
16. Battery
5. Touch Pad
11. Sleep &Charge
17. LED
6. Speaker
12. Bridge Media slot
18.FAN
The Diagnostics Disk operations are described in Chapter 3. Detailed replacement
procedures are given in Chapter 4.
The following tools are necessary for implementing the troubleshooting procedures:
1. Phillips screwdriver (3.5 mm)
2. Multimeter
3. External monitor
4. USB compatible keyboard
5. Multimedia sound system with line-in and line-out ports
6. Headphones
7. USB test module and USB cable
8. MIC module and MIC line
9. Audio loop back
10. USB3.0 HDD
11. HDMI