system jumpers

27

system memory

 

reconfiguring 75

system tour 1

37

system upgrade

ESD precautions 39

 

installation precautions 39

40

post-installation instructions

preinstallation instructions

39

T

top cover

44

 

installing

 

removing

44

 

troubleshooting

127

132

confirming loading of the OS

hardware diagnostic testing

131

POST error codes 140

 

problems

132

 

adapter stopped working 136

cannot connect to a

 

 

network 135

cannot detect bootable

 

 

drive 134

134

cannot detect memory

 

 

 

 

 

173

cannot eject DVD/CD tray

134

cannot read DVD/CD

134

controller stopped

 

136

 

working

 

CPUs not recognized

133

DVD/CD drive no light

133

HDD LED no light

133

 

HDD not recognized

134

initial system installation

129

LAN LED no light

135

135

network connection fails

no characters on screen

137

no video

135

 

 

 

132

power indicator no light

server boot does not complete

POST

 

133

138

system fans do not rotate

resetting the system

129

131

verifying key system lights

turning off the system

36

 

 

 

 

turning on the system

33

34

 

 

power-on problems

 

 

U

 

 

 

 

 

upgrading the BIOS

125

 

 

 

 

Page 183
Image 183
Acer Altos R520 manual 173, 129 131