DEC DECstation 316+, Service Manual, Page: 47 / 94

3
FRU Replacement
3.1 Introduction
This chapter contains procedures for removing and replacing each
DECstation field replaceable unit (FRU). To install many of the
FRUs, perform the reverse of the procedure when it is so noted.
Only qualified service technicians should remove and replace
FRUs. Use only Digital supplied spares.
Table 3–1 lists standard FRUs for the DECstation systems
and their part numbers. Table 3–2 lists optional FRUs for the
DECstations 316+, 320
C
, 325
C
, 333
C
, and 425
C
, and their part
numbers.
Table 3–1 DECstation Standard Field Replaceable Units
FRU
Digital Part
Number
DECstation 325
C
main logic board 29-28091-01
DECstation 333
C
main logic board 29-28141-01
DECstation 316+ main logic board 29-28139-01
DECstation 320+ main logic board 29-28850-01
DECstation 425
C
main logic board 29-28554-01
DECstation 325
C
CPU board 29-28092-01
DECstation 333
C
CPU board 29-28142-01
DECstation 316+ CPU board 29-28140-01
DECstation 425
C
CPU board 29-28553-01
DECstation 320+ CPU board 29-28851-01
3–1