234 SPARCstation 20 Service Manual • July 1996
clock chip, 204
command output message
multiprocessor module-info, 228
probe-scsi, 227
probe-scsi-all, 227
test, 222
test-all, 222
uniprocessor module-info, 228
watch-clock, 223
watch-net, 224
watch-net-all, 226
watch-tpe, 225
completing POST, 25
component replacement, 143
components, 2
connecting
DC power connector, 177
diskette connector, 177
SCSI connector, 177
speaker/LED connector, 177
connector
13W3, 215
audio
line-in, 217
line-out, 217
audio line-in, 217
audio line-out, 217
AUI, 207
CD-ROM, optional, 74
headphone, 217
keyboard, 209
LED, in-line, 60, 61
microphone, 217
mouse, 209
parallel, 205
SCSI, 212
serial ports A and B, 210
single, 117
speaker, 66
speaker, spade, 65
system back panel, 4
twisted-pair Ethernet, 211
controller, SCSI, 34
corner screw, 49
cover
removing, 50
replacing, 51
speaker, 64
D
data cable, diskette drive, 130
DC power
connector
(SunCD 2Plus drive-type chassis), 89, 99
(SunCD 4 drive-type chassis), 94, 104
harness, 97
default boot mode, 9
description
functional, 195
product, 1
system board, 140
desktop enclosure
disk drive, 8
tape, 8
detail, cable guides, 101
diagnostic tools, 11
disconnecting
DC power connector, 172
diskette connector, 172
fan DC power connector, 68
SCSI connector, 172
speaker/LED connector, 172
disk drive
error, 33
errors, troubleshooting, 34
handle, 119
jumper settings not required, 121
position, 118, 121
single connector, 117
disk expansion unit, 7
diskette drive, 126
connecting data cable, 136
connecting power cable, 135
data cable, 130
filler panel, 128
grommet, 128
grommets, 128, 132
installing, 132, 134
location, 127
power cable, 129
power cable (P4), 134
removing, 127, 131
setting microswitch, 133
setting switch, 131
unseating grommets, 132
diskette drive cable, 107
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