Maintenance Manual

Chapter 2 Troubleshooting Procedures
2.20 LED Troubleshooting
These are 7 LED lights at Top assy. From left to right, the Open statuses of them represent
functions as below.
1. AC-IN 2. Power 3. Battery 4.HDD
5. Cardreader 6.W-Lan 7.LED
To check if the computer’s LED is malfunctioning or not, follow the troubleshooting
procedures below as instructed.
Procedure 1: Each function Execution Check
Procedure 2: Connect Check and Replacement Check
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. If
not, please go to Procedure2.
Procedure 2 Connect Check and Replacement Check
LED light is combined with Touchpad/B which is connected to system board by a TP-MB
cable. This cable may be disconnected from system board. Disassemble the computer
following the steps described in Chapter 4, Replacement Procedures.
Check 1 Make sure TP-MB is correctly and firmly inserted. If the problem still occurs,
perform Check 2.
Check 2 Touchpad/B may be faulty. Replace it with a new one. If the problem still occurs,
perform Check 3.
Check 3 The system board may be faulty. Replace it with a new one following the
instruction in Chapter 4.
Satellite T130D and Pro T130D and PORTEGE T130DMaintenance Manual (960-Q08)