Lenovo ThinkServer RD120 Hardware Maintenance Manual page 228

E
Easy LED Diagnostics
about 161
LEDs 164
panel 162
EasyStartup
using 18
electrical input 4
environment 4
error codes and messages
diagnostic 170
POST/BIOS 138
system error 184
error logs 136
clearing 137
POST 136
system error 137
viewing 137
error messages 184
error symptoms
general 148
hard disk drive 148
intermittent 149
keyboard, USB 150
memory 151
microprocessor 152
monitor 152
mouse, USB 150
optional devices 155
pointing device, USB 150
power 156
serial port 158
ServerGuide 159
software 160
USB port 161
errors
format, diagnostic code 169
messages, diagnostic 168
power supply LEDs 167
Ethernet
controller
troubleshooting 194
systems-management connector 8
Ethernet activity LED 8
Ethernet connector 8
Ethernet-link status link LED 8
F
field replaceable units (FRUs) 25
firmware, updating 17
Fixed Disk Test 168
FRUs, replacing
hard disk drive backplane 108
heat-sink retention module 118
microprocessor 113
operator information panel assembly 101
system board 119
210
ThinkServer RD120 server Machine Types 6444, 6445, 6446, and 6447: Hardware Maintenance Manual
G
getting help 197
H
hard disk drive
diagnostic tests, types of 168
installing 73
problems 148
hard drive activity LED 6
heat output 4
help, getting 197
hot-swap and hot-plug devices
power supplies 95
hot-swap power supply, installing 95
humidity 4
I
important notices 2
information LED 6
installing
adapter 66
battery 99
CD-RW/DVD drive 76
cover 57
DIMMs 88
hard disk drive 73
hard disk drive backplane 109
heat-sink retention module 118
hot-swap drive 73
memory modules 88
microprocessor 113
operator-information panel 102
RAID controller 71
system board 121
VRM 114, 115
intermittent problems 149
J
jumpers 13
L
LEDs 7
Ethernet activity 8
Ethernet-link status 8
front 5
power-channel error 193
rear view 7
riser-card assembly 16
system board 15
location LED 8
locator LED 6
M
memory module
branch 89