Fru Replacement; Introduction; Ccpu Board; Decstation Standard Field Replaceable Units - DEC DECstation 316+ Service Manual

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
numbers.
Table 3–1 DECstation Standard Field Replaceable Units
FRU
DECstation 325 main logic board
C
DECstation 333 main logic board
C
DECstation 316+ main logic board
DECstation 320+ main logic board
DECstation 425 main logic board
C
DECstation 325 CPU board
C
DECstation 333 CPU board
C
DECstation 316+ CPU board
DECstation 425 CPU board
C
DECstation 320+ CPU board

FRU Replacement

, 325 , 333 , and 425
C C C
3
, and their part
C
Digital Part
Number
29-28091-01
29-28141-01
29-28139-01
29-28850-01
29-28554-01
29-28092-01
29-28142-01
29-28140-01
29-28553-01
29-28851-01
3–1