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Chapter 2 Troubleshooting Procedures
2.19 USB Board Troubleshooting
not,
dures below as instructed.
Execution Check
ent Check
Procedure 1 Diagnostic Test Program Execution Check
ent Check
rs,
Flatiron carries 3 USB port. To check if the computer’s USB port is malfunctioning or
follow the troubleshooting proce
Procedure 1: Diagnostic Test Program
Procedure 2: Connect Check and Replacem
Execute USB test in the USB test program.
If any error is detected by the test, go to Procedure 2.
Procedure 2 Connect Check and Replacem
Right side USB port is connected to system board with CRT Board by CRT cable. This cable
may be disconnected from system board. Disassemble the computer following the steps
described in Chapter 4, Replacement Procedures.
Check 1 Make sure CRT cable is correctly and firmly inserted. If the problem still occu
perform Check 2.
Check 2 CRT/B may be faulty. Replace it with a new one. If the problem still occurs,
perform Check 3.
Check 3
The system board may be faulty. Replace it with a new one following the
instruction in Chapter 4.
Satellite L600/L640/L645, Satellite Pro L600/Pro L640/Pro L645 Maintenance Manual (960-Q08)