Led Troubleshooting; Procedure 1; Each Function Execution Check; Connect Check And Replacement Check - Toshiba Satellite L640 Maintenance Manual

Chapter 2 Troubleshooting Procedures

2.20 LED Troubleshooting

These are 6 LED lights at Top assy. From left to right, the Open statuses of them represent
functions as below.
1. AC-IN 2. Power
5. Card Re ader 6.W-Lan
To check if the computer's LED is malfunctioning or not, follow the tr
procedures below as instructed.

Procedure 1:

Procedure 2:

Procedure 1

Each function Execution Check

In this procedure, you must first make sure all components except LED are working right.
Then you can execute the related function to check if the corresponding LED is on or not
not, please go to Procedure2.
Procedur e 2 Connect C
LED light is built on system board; the system board may be faulty. Disassemble the
computer following the steps described in Chapter 4, Replacement Procedures.
Check 1 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)
3. Battery 4.HDD/SSD

Each function Execution Check

Connect Check and Replace
heck and Replacement Check
oubleshooting
ment Check
. If