Toshiba Satellite L645 - CRT Troubleshooting; Connector and Cable Check; External Monitor Check; Procedure 1

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)