Chapter 5 Troubleshooting Guidelines
340S2
61
Rev : B
5.7 Touch Pad test error
Symptom: An error message is shown when the Touch Pad point is enabled
Touch pad error
Correct it
Is Touch pad cable
connected properly ?
Try another known good touch pad module and
cabl
e
Test Ok ?
Replace the faulty parts
Replace motherboard
Board level troubleshooting
Check KB controller
PC87570 for cold solder?
Re-solder
No
Yes
No
Yes
No
Yes
Check one of the following parts or signals on the motherboard maybe
defective, use an oscilloscope and replace it.
1. KB Controller – PC87570
Summary of Contents for 340S2
Page 6: ...Chapter 1 General System Description 340S2 6 Rev B ...
Page 18: ...Chapter 2 Connectors Switches 340S2 18 Rev B ...
Page 38: ...Chapter 4 System Disassembly 340S2 38 Rev B SB3052P TL594 29LV020 ...
Page 48: ...Chapter 4 System Disassembly 340S2 48 Rev B 4 5 ...
Page 88: ...t 340S2 Rev B ...