Replacing External Tape Drive CRUs Online

Definitions and Service Classes of CRUs and
FRUs
NonStop S-series components are divided into two categories: customer-replaceable
units (CRUs) and field-replaceable units (FRUs). FRUs can be replaced only by an HP
authorized service provider. See Replaceable Units Definitions in the Service
Information section of the Support and Service library in NTL.
For the classification of specific units and part numbers, see Part Numbers in the
Service Information section of the Support and Service library in NTL.
Examples of CRUs and FRUs:
Field-Replaceable Units (FRUs) generally include:
Backplanes Group ID switch cable assemblies
Batteries Power cable (DC)
Casters
Chassis
Power monitor and control unit (PMCU)
Emergency power-off
(EPO) cable assembly
Power interface board (PIB)
Power shelf
Enclosures ServerNet/FX adapter
Frames Tape drives:
5159, 519x, 5259, 9490, and 9840
Tape Libraries:
4400, 9310, 9710, and L700
Customer Replaceable Units (CRUs) generally include:
Class-1 CRUs:
Battery retainer Fans
Cables (except ServerNet) Loopback test connectors
Disk drives Metric rack mount kit
Enclosure doors Power cords (AC)
Front panel, power shelf
Group service LED cable
ServerNet adapter filler panels
Assembly, external rear
LED cable assembly
Class-2 CRUs:
AWAN servers
3883, 3884, 3885, and 3886
Tape Drives
5142
Asynchronous Transfer Mode 3 ServerNet
adapter (ATM3SA)
515x, except 5159
519x, except 519xACL