Toshiba PRO L600 Manual Do Utilizador

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Chapter 2 Troubleshooting Procedures  
 
2.18 CRT Troubleshooting 
To check if the computer’s CRT is malfunctioning or not, follow the troubleshooting 
procedures below as instructed. 
Procedure 2:  Connector and Cable Check 
Connect an external monitor to the computer’s external CRT port, and then to see if you can 
a
nnected to system board by a CRT cable. Their cables may be disconnected 
If the connection is loose, reconnect firmly and restart the computer. If the problem still 
occurs, go to
 
Procedure 3. 
Procedure 1:  External Monitor Check 
Procedure 3:  Replacement Check 
Procedure 1 
External Monitor Check 
transfer video im ge to external monitor. If not, go procedure2.  
Procedure 2 
Connector and Cable Check 
CRT board is co
from system board. Disassemble the computer following the steps described in Chapter 4, 
Replacement Procedures
 
Procedure 3 
Replacement Check 
Check 1 
 cable with a new one following the 
instructions in Chapter 4--Replacement Procedure, and then test again. If the 
Check 2 
may be faulty. Replace CRT board with a new one following the 
instructions in Chapter 4, Replacement Procedure, and then test again.  If the 
problem still occurs, perform Check 3. 
heck 3 
System board may be faulty. Replace it with a new one following the instructions 
in Chapter 4, Replacement Procedure
CRT cable may be faulty. Replace CRT
problem still occurs, perform Check 2. 
CRT board 
C
Satellite L600/L640/L645, Satellite Pro L600/Pro L640/Pro L645 Maintenance Manual (960-Q08)