IBM 7940 Problem Determination And Service Manual page 155

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
137
Index