HP 400 Series Servicing Manual page 293

Model 400t (continued)
Reset switch, 2-1
Service LED, 2-1
SERVICE Mode switch, 2-1
switch circuit FRU pin numbers, 4-65
system, block diagram, 3-4
system configuration, 1-8 to 1-9
system level operation, block diagram, 3-4
system unit, 1-5
connectors, 2-3
controls, 2-1 to 2-3
cover removal, 4-61
troubleshooting
hardware checkout procedures, 4-60 to
4-69
power supply checkout procedure, 4-63
to 4-67
Winchester disk power checkout proce-
dure, 4-68
Winchester Disk Drive Specifications, 1-7
monitor, 1-5
controls, 2-6 to 2-8
controllers (Model 400s), 1-14
Model 400t and Model 400dl, 1-6
monochrome graphics, operation, 3-19
N
netboot program, 4-25
Domain, 4-14
network
interface board, 1-5
options, 1-2, 1-3
priority, selecting (Domain), B-1 to B-4
problems, troubleshooting (Domain), 4-13
removal and replacement (Model 400t and
400dl), 5-8
selecting primary (Domain), B-4
new system initial power-on (HP-UX), C-7, C-8
configuration control mode, C-7 to C-19
O
online diagnostics (Domain), 4-26 to 4-28
online tests, (Domain), 4-14
operating mode, selecting (Domain), B-1 to B-4
operation
FRU level, 3-9 to 3-20
CPU/Motherboard, 3-9 to 3-15
output devices, HP-UX systems, 4-34 to 4-35
overview of Domain/OS, 3-2 to 3-3
P
parallel interface, 3-13
configuration (HP-UX), C-23 to C-24
controller, 3-10
PC AT bus, 3-14
interface (modified) 3-10
PC coprocessor board, A-8
PDMA graphics interface board, 3-18
phase II (boot) shell (Domain), 4-14
physical configuration
Model 400s, 1-11 to 1-14
Model 400t and Model 400dl, 1-5 to 1-6
power cable, 1-5
power connections, internal (Model 400t and Mod-
el 400dl), 4-62
power distribution cable, main (Model 400s), 5-76
power supply, 1-5
autoranging, 3-19
Model 400s
checkout procedure, 4-70 to 4-72
removal and replacement, 5-26
specifications, 4-71
theory of operation, 3-19 to 3-20
Model 400t and Model 400dl, 3-19
checkout procedure, 4-63 to 4-67
removal and replacement, 5-18
specifications, 4-64
tolerances, 4-64
voltages, 4-64
Power switch
Model 400s, 2-4
main, removal and replacement, 5-75
Model 400t and Model 400dl, 2-1
panel, removal and replacement, 5-19
power-on LED circuit FRU pin numbers (Model
400t and Model 400dl), 4-67
power-up (HP-UX), 4-33 to 4-34
new system initial power-on, C-8
product overview, 1-1 to 1-17
programmed I/O, for ISA (PC AT) bus interface,
restrictions, 3-14
Index 9