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Chapter 2 Troubleshooting Procedures
Satellite L600/L640/L645, Satellite Pro L600/Pro L640/Pro L645 Maintenance Manual (960-Q08)
Procedure 4 Replacement Check
HDMI signals are connected to display circuits via HDMI cable and HDMI&USB board. Any
of these components may be faulty. Refer to Chapter 4, Replacement Procedures, for
If characters or graphics on the internal display are not displayed clearly, perform
Check 1.
If some screen functions do not operate properly, perform Check 4.
Check 1 HDMI cable may be faulty. Replace HDMI cable with a new one following the
instructions in Chapter 1, Replacement Procedure and test the display again. If the
problem still occurs, perform Check 2.
Check 2 HDMI monitor may be faulty. Replace HDMI monitor with a new one following
the instructions in Chapter 2, Replacement Procedure and test the display again. If
the problem still occurs, perform Check 3
Check 3 HDMI&USB board may be faulty. Replace it with a new one following the
instructions in Chapter 3, Replacement Procedure.
Check 4 System board may be faulty. Replace it with a new one following the instructions
in Chapter 4, Replacement Procedure.
instructions on how to disassemble the computer and then perform the following checks: