Memory Troubleshooting; Procedure 1 Diagnostic Test Program Execution Check; Procedure 2 Connect Check And Replacement Check - Toshiba Satellite L640D Maintenance Manual

Chapter 2 Troubleshooting Procedures

2.14 Memory Troubleshooting

Memory troubleshooting can following below procedures as instructed.
Procedure 1:
Procedure 2:
Procedure 1 Diagnostic Test Program Execution Check
Execute Memory test in the Memory test program. Refer to Chapter 3, Tests and Diagnostics
for more information on how to perform the test program.
If any error is detected by the test, go to Procedure 2.
Procedure 2 Connect Check and Replacement Check
Memory function abnormal always accompany CPU run abnormal, the RAM may be not
insert correctly or slot is defective or RAM and system board may be faulty.
Check 1 Make sure RAM is correctly and firmly inserted to the slots. If the problem still
occurs, perform Check 2.
Check 2 RAM may be faulty. Replace it with a new one. If the problem still occurs,
perform Check 3.
Check 3 The slot and MB may be faulty. Replace it with a new one following the
instruction in Chapter 4.
Satellite L600D/L640D/L645D, Satellite Pro L600D/Pro L640D/Pro L645D Maintenance Manual (960-Q08)
Diagnostic Test Program Execution Check
Connect Check and Replacement Check