Digital Equipment VAXstation 3100 Maintenance Manual page 194

Operating Information 173
7 .2.1 Front Panel
To avoid confusion, the front panel on the RRD40 expansion box and the
RRD40 drive installed in the system box are described separately in the
following sections.
7.2.1.1 RRD40 Expansion box
The front panel consists of a disc access door, an activity indicator, and a
power indicator (Figure 7-2). The activity indicator lights when a disc is
properly loaded into the RRD40 drive. The indicator flashes when the disc is
transferring data. The power indicator lights when power is on.
7 .2.1.2 RRD40 Drive In the Model 40 System
The front panel consists of a disc access door and one activity indicator. The
activity indicator lights when a disc is properly loaded into the RRD40 drive.
The indicator flashes when the disc is transferring data.
7.2.2 Loading a Disc
When loading a disc, the entire disc caddy is inserted into lhe disc access door
on the drive. Do not remove the disc from the
caddy. Proceed as follows:
1. Make sure the power is on.
2. Examine the disc caddy. Make sure that it is not cracked or damaged in
any way. Never load a damaged caddy into an RRD40 drive.
3. Examine the disc inside the caddy. Note that one side is labeled. The
label should always be facing up as you insert the disc into the drive.
When the label is facing up, the four notches on the disc housing are on
the left (Figure 7-4). These notches line up with the four similar notches
on the front of the RRD40 drive.
NOTE
If you have the disc positioned label side up and the notches are on
the right, then the disc is oriented improperly in the caddy. Proceed
no further with the disc loading. Go to Section 7.2.4 and repair the
disc and the caddy.