IBM 7940, Problem Determination And Service Manual

Page: 155 / 160

installing (continued)
cover 31
fan 43
heat sink 63
memory 41
microprocessor 62
operator information panel 50
riser card assembly 34
system board 65
integrated functions 3
intermittent problems 88
internal connectors 7
J
jumper, power-on password override (J52) 117
jumpers 9
L
LEDs
ac power 7, 100
activity 7
BMC heartbeat 13
CD drive activity 5
dc power 7, 100
DVD drive activity 5
error 13
front 5
hard disk drive activity 6
light path power 13
link 7
locator 6, 7
operator information panel 5, 6
power 6
rear 6
system board 12
system board, error 98
system error 6
system-locator 13
VRD error 13
light path button 8
light path power LED 13
link LED 7
local area network (LAN)
activity LEDs, Ethernet 7
connectors 7
link LEDs 7
locator LED 6, 7
log
BMC system event (SEL) 76
POST errors 76
system event/error 76
M
memory
installing 41
problems 90
replacing 39
specifications 3
messages
diagnostic 101
microprocessor
coordination with DIMMs 40
installing 62
problems 91
replacing 61
requirements 40
specifications 3
monitor problems 92
mouse problems 90
N
no beep symptoms 75
Nonmaskable interrupt (NMI) switch 7
notes, defined 2
notices
electronic emission 131
FCC, Class A 131
important notes 128
notices and statements, defined 2
O
online publications 2
operator information panel
connector 5, 6
controls 5, 6
installing 50
LEDs 5, 6
replacing 49
switches and connectors 8
option connectors 7
optional device problems 94
P
parts listing 21
password
power-on
override jumper (J52) 117
PCI Express
riser cards 7
pointing device problems 90
ports
Ethernet 7
serial 7
USB 6, 7
video 7
POST
beep codes 67
error codes 77
error logging 76
power
cord connector 7
LED 6
power cords 25
power problems 95, 119
power supply
error LEDs 100
Index
137