3
Removing and Replacing Field
Replaceable Units
Note
FRUs for the BA42B-based VAX 4000 systems are the same for Models
100, 100A, and 105A, except where noted. Illustrations in this chapter
depict various models.
This chapter describes how to remove and replace the Field Replaceable Units
(FRUs) in the BA42B Enclosure. Use this chapter when:
• Removing the enclosure cover
• Removing an MS44 or MS44L memory module
• Removing the upper drive-mounting shelf
• Removing an RX26 diskette drive assembly
• Removing a TZ30 tape drive
• Removing a TZK10/TZK11 tape drive
• Removing a TLZ06/TLZ07 tape drive
• Removing an RF31T/RF35/RF36 disk drive
• Removing an RRD42 CD–ROM drive
• Removing an RRD43 CD–ROM drive
• Removing the upper and lower drive-mounting shelf combination
• Removing the SCSI cable
• Removing the DSSI cable
• Removing the DSSI daughter board
• Removing a DSW42 synchronous communications option
Removing and Replacing Field Replaceable Units 3–1