Digital Equipment VAXstation 3100 Maintenance Manual page 200

Operating Information 179
7.2.7 Replacing the Disc in the Caddy
Assembling the caddy is essentially a reverse of the removal procedures. Make
sure that your hands are positioned as shown
in
the illustrations. It is very
important that the disc is replaced properly.
1. Position the housing and disc (Figure 7-8). Always work with the disc
so the label is facing down.
2. Insert the disc into the housing. The inside of the housing is grooved to
accept the disc. Exert inward pressure to hold the disc in the housing.
3. Slide the housing into the transparent sleeve all the way until it clicks into
place.
4. Turn the assembly over so that the label on the disc is facing up. Make
sure that the notches on the housing are on the left. If the notches are
not on the left when the disc is label side up, then the disc is mounted
incorrectly inside the caddy. Remove the disc from the caddy and reorient
the disc.
7 .3 The RX23 Diskette Drive
The RX23 is a half-height, high density, 3.5 inch, double-sided, diskette drive.
It has a formatted capacity of 1.47 Mbytes. The RX23 can read and write
industry-compatible 3.5 inch, high density, diskene media. The RX23 ia
compatible with field-formatted industry standard, 18 sector format on 700
oersted type media.
The RX23 is a single FRU. If a failure is detected in the RX23, the entire
drive is replaced.
The media for the RX23 diskette drive is a 3 .5 inch diskette. This diskette can
be either 1 or 2 Mbytes. A notch on the diskette determines the byte capacity
of the diskette. A microswitch in the front of the drive detects which size
diskette is loaded.