Product data

disk drive modules (continued)
2104 Model TU3 17
POSTs (power-on self-tests) 37
removing 75
Download Microcode to a Disk Drive or a SCSI Interface
Card 136
dummy card assembly
2104 Model DU3
location 16
2104 Model TU3
location 17
dummy disk drive modules
installing 80
removing 75
E
electrical hazards 31
electrical requirements 23
Enable Enclosure Services switch 10
Enclosure ID switch 11
enclosure services
ANSI SCSI enclosure services (SES) 30
environmental characteristics 23
error logging 3
F
fan-and-power-supply assemblies
AC PWR light 8
CHK light 8
DC On/Standby switch 8
DC PWR light 8
location
2104 Model DU3 16
2104 Model TU3 17
fan assembly
CHK light 8
location
2104 Model DU3 16
removal and replacement 94
Format Media service aid 134
frame assembly
removal and replacement 106
frequency (voltage) 23
FRU names used in SRN table 39
G
glossary of FRU names used in SRN table 39
grounding check 32
2104 Model DU3 32
2104 Model TU3 35
H
hazards, safety 31
heat output 24
humidity 23
I
indicators
AC PWR light 8
CARD FAULT light 7
CHK light 8
CHK light (fan) 8
DC PWR light 8
disk drive module Activity light 13
disk drive module Check light 13
LVD/SE light 7
SCSI RESET light 7
Subsystem Check light 7
Subsystem Power light 7
TERM POWER light 7
inspection guide 31
checklist 31
L
labels
2104 serial number
2104 Model DU3 22
2104 Model TU3 22
disk drive module serial number 22
product information
checking 31
lights
AC PWR 8
ACTIVE 7
CARD FAULT 7
CHK 8
CHK (fan) 8
DC PWR 8
disk drive module Activity 13
disk drive module Check 13
LVD/SE 7
SCSI RESET 7
Subsystem Check 7
Subsystem Power 7
TERM POWER 7
LVD/SE light 7
M
mainline-power connector 20
−48Vdc 21
maintenance analysis procedures (MAPs) 43
manuals, related
for 2104 ix
for RISC systems 131
mechanical hazards 31
microcode and software errors
RISC systems 137
microcode maintenance 28
N
nonconcurrent diagnostics
RISC systems 137
202 2104 Service Guide