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2 Troubleshooting Procedures
Rev B
2
2.1 Troubleshooting
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. Power Supply 2. System Board 3. USB Floppy Disk Drive
4. Hard Disk Drive 5. Keyboard/Dual point 6. Touch pad
7. Display 8. Optical Drive 9. LAN
10. Bluetooth 11. Wireless LAN 12. Modem
13. Web camera 14. Tablet Pen 15. Touch screen
16. Sound 17. Bridge media 18. Fingerprint sensor
19. 3G 20. SmartCard Slot
The Diagnostics Disk operations are described in Chapter 3. Detailed Replacement
Procedures are given in Chapter 4, Replacement Procedures.
The following tools are necessary for implementing the troubleshooting procedures:
The following tools are necessary for implementing the Diagnostics procedures:
For tools required for executing the Test Program, refer to the Chapter3. For tools required
for disassembling/assembling, refer to the Chapter 4.
1. A set of tools for debugging port test (test cable, test board, RS-232C cross cable,
display, D port FD)
2. A PC with a serial port (for displaying debug port test result)
3. DOS system FD
4. An external CRT display(for Display trouble shooting)
5. A SD card(for SD card slot trouble shooting)
6. An external microphone(for Sound trouble shooting)
7. Headphone(for Sound trouble shooting)
PORTEGE M700/M750 Maintenance Manual (960-661) [CONFIDENTIAL] 2-1