84 SPARCstation 20 Service Manual • July 1996
Removing the SCSI Backplane
Note – The SCSI backplane is a printed circuit board located in the drive bracket
area of the chassis. A bracket and two screws secure the SCSI backplane to the
vented sheetmetal chassis. One or two single-connector hard drives plug into the
SCSI backplane. The SCSI single-connector drive sockets provide SCSI data, SCSI
addressing, and power.
1. Remove power from the system.
See “Removing Power from the System” on page 45.
2. Remove the cover and attach a wrist strap.
See Chapter 7.
Caution – Use proper ESD grounding techniques when handling components. Wear
an antistatic wrist strap and use an ESD-protected mat. Store ESD-sensitive
components in antistatic bags before placing it on any surface.
3. Remove the hard disk drive(s).
See “Removing a Hard Disk Drive” on page 117.
4. Disconnect the SCSI backplane sockets and connectors as follows (
FIGURE 8-26):
a. Press the clip on the DC power connector.
b. Disconnect the DC power connector from the SCSI backplane socket.
c. Disconnect the DC power connector clip from the DC power socket.
d. Disconnect the SCSI data connector from the SCSI data socket.
To Next Page
Loading...
Need help?
General
