Acer ASPIRE 4820T Service Manual page 270

No Display Issue
O
111
ODD Failure
Online Support Information
optical drive module
P
5
Panel
7
Bottom
5
left
Power On Failure
R
65
RTC Battery
S
41
SD Card
56
Speaker Module
System
Block Diagram
T
Test Compatible Components
63
Thermal Module
Thermal Unit Failure
TouchPad Failure
Troubleshooting
Built-in KB Failure
EasyTouch Buttons
HDTV Switch
Internal Microphone
Internal Speakers
107
LCD Failure
105
No Display
111
ODD
Other Failures
104
Power On
Thermal Unit
108
TouchPad
114
WLAN
U
Undetermined Problems
57
USB Board
utility
218
105
129
43
104
4
127
114
108
107
114
115
109
108
115
114
116
19–27
BIOS
W
Windows 2000 Environment Test
Wireless Function Failure
46
WLAN Board
128
114