Configuration C - Internal And External Scsi Devices - Motorola MVME712M Installation And Use Manual

Preparing and Installing the Hardware
Configuration C - Internal and External SCSI Devices
2
If SCSI devices are to be attached internal and external to your system and
the MVMExxxx processor VMEmodule is at one end of the cable, proceed
as follows. See Figure 2-15.
1. The MVMExxxx is at one end of the cable, so terminators must be
installed on the P2 adapter module.
2. The MVME712M is not at one end of the cable, so terminators must be
removed from the MVME712M.
3. Install the P2 adapter module on the rear of the backplane directly in
line with the P2 connector on the MVMExxxx. Be sure to orient pin 1 of
the adapter with pin 1 of the backplane connector.
4. Connect a user-supplied 50-conductor cable with compatible pinouts
(see Chapter 3) from connector J3 on the MVME712M to the internal
SCSI devices and on to connector J3 on the P2 adapter. This cable must
be a continuous cable.
5. Attach the furnished 64-conductor cable, part number 30-W2514B02,
from connector J2 on the P2 adapter to connector J2 on the MVME712M.
Be sure to orient cable pin 1 with connector pin 1.
6. Insert the MVME712M module into the selected slots and tighten the
attaching screws, making good contact with the transverse mounting
rails to minimize RF emissions.
7. Connect a user-supplied 50-conductor cable with compatible pinouts
(see Chapter 3) from the SCSI connector on the front panel of the
MVME712M to the external SCSI devices.
8. Terminators must be installed on the last SCSI device on the cable.
9. Make sure that cables will not be pinched by the cover and install the
cover that you previously removed.
10. Connect the power cable to the power source and turn the unit on.
11. Both yellow (DS1) and green (DS2) LEDs on the MVME712M should be
lit (the LEDs can be seen through the opening in the front panel). If not
lit, then either a cabling problem exists, a fuse is blown, or both.
If there is a cabling problem, then correct it. If not, check the fuse on the
P2 adapter module and on the MVMExxxx module, and replace if nec-
essary. The fuse on the P2 adapter module is for SCSI terminator pow-
er. The fuse on the MVMExxxx is for Ethernet transceiver power. The
resistance of each fuse should be less than 1 ohm.
2-24