Acer R720 Series manual

Models: R720 Series

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OS 6

4

 

 

 

 

PCI I/O

 

5

 

 

power supply

 

 

processor

3

 

4

 

SAS mid-plane board

 

serial ATA port

4

 

 

system fan

5

 

 

 

system boards

 

17

 

 

 

backplane

19

 

 

19

SAS backplane board

mainboard

17

 

 

mid-plane board

 

21

SAS mid-plane board

system diagnostic LEDs 22

 

 

system fan

 

72

 

 

 

replacing

 

 

 

system features

3

 

 

 

system jumpers

23

 

 

 

system memory

 

80

 

 

reconfiguring

 

 

system tour

1

33

 

 

 

system upgrade

35

 

 

ESD precautions

35

 

installation precautions

36

post-installation instructions

preinstallation instructions

35

T

tape drive

60

installing

top cover

41

installing

removing

41

troubleshooting

133

confirming loading of the OS 138

175

hardware diagnostic testing 137 POST error codes 147

problems 138

 

 

 

 

142

adapter stopped working

cannot connect to a network

141

 

 

 

 

cannot detect

bootable

drive

141

 

 

 

141

cannot detect memory

 

cannot eject DVD/CD tray

140

cannot read DVD/CD

140

controller

stopped

working

142

 

 

140

DVD/CD drive no light

HDD LED no light

139

 

HDD not recognized

141

initial system installation

135

LAN LED no light

142

142

network connection fails

no characters on screen

143

no video

142

 

 

 

138

power indicator no light

Processors

not

recognized

139

 

 

 

 

server boot does not complete

POST

139

 

144

system fans do not rotate

resetting the system

135

137

verifying key system lights

turning off the system

32

 

 

 

turning on the system

29

 

 

 

power-on problems

30

 

 

U

upgrading the BIOS 132

Page 185
Image 185
Acer R720 Series manual