Digital Equipment VAXstation 3100 Series, Руководство по модернизации, Страница: 38 / 66

Removing the Ethernet ROM
Removing the Ethernet ROM
To access the Ethernet ROM you must remove the lower drive
plate and the scanline coprocessor.
Caution:
When you remove the lower drive plate from the system
unit, do not make contact with the circuit boards under
the drive plate, such as the system board and the
memory boards. Contact between the drive plate and the
circuit boards could cause the circuit boards irreparable
damage.
Remove the
Lower Drive
Plate
To remove the lower drive plate from the system unit, do the
following and refer to Figure 3–5 and Figure 3–6:
1. Remove the RRD40 adapter module by disconnecting the
cable from the SCSI bus and the RRD40 compact disk drive.
2. Disconnect the internal power cable from the TZ30 tape drive
(if installed).
3. Disconnect the SCSI signal cable on the TZ30 from the mass
storage controller (if installed).
4. Disconnect the internal power cable from the RRD40 compact
disk.
5. Loosen the four captive screws and the three slide mount
screws shown in Figure 3–6. Do not remove the screws.
6. Slide the lower drive plate forward, then lift the plate from
the system unit.
3–8 Removing Options from a Model 40 and 48 Workstation