The highest priority I/O is closest to the CPU, in slot 3, with each succeeding lower priority controller installed in
the next higher numbered slot. A bus repeater PCB is used if there is an expansion chassis and will be located in
slot 16. The -5 V booster PCB is required by the CPU chassis if -5 V needs exceed the regulated power supply
capability and requires one I/O slot.
The fan module in the CPU chassis uses six fans for cooling.
The CPU chassis regulated power supply is a module made up of a motherboard and attached daughterboard.
The motherboard is a regulated 750 watt power supply while the daughterboard is a controller that monitors the
power supply and reports the status of the monitored signals to the CPU. The input to the regulated power supply
is from a VNR supply that is attached to the rear of the chassis.
1.4 OPERATING SOFTWARE SUPPORT
The system provides operating software systems for either general purpose, real-time
applications,
or
communications. The instruction set provides compatibility with Data General 32-bit ECLIPSE
computers.
1.5 FIELD REPLACEABLE UNITS (FRUs) AND OPTIONS
Table 1-4 lists the ECLIPSE MV/7800, and MV/7800-C FRUs with their respective part numbers. Table 1-5
lists the optional Memory Expansion PCBs. Tables 1-6 through 1-13 lists the MV17800-U FRUs with DGC part
numbers. To coordinate information for the MV/7800-U it may be necessary to reference the Product
Information Package written for the system prior to its upgrade to
a
MV/7800-U.
Table 1-4. Models 8883/8884/8885 FRUs
DESCRIPTION
PART NUMBER
CPU PCB w/2MB Memory (1 of 2)
005-024614
CPU PCB w/4MB Memory
005-024496
Tested Power Supply w/UPSC
005-020141
Front Panel - Earthtone
005-018672
Fan Module
005-018439
Fan Assembly
005-018997
Fan Module Cable
005-018446
Tested Backpanel
005-022278
Tested VNR Chassis (120, 60 Hz)
005-018436
Tested VNR Chassis (220/240, 50 Hz)
005-018915
Configuration Plug (Internal) (120, 60 Hz)
005-018772
Configuration Plug (Internal (220/240, 50 Hz)
005-018773
Internal Wiring Harness
005-018445
Configuration Plug (External) (120, 60 Hz)
005-018774
Configuration Plug (External) (220/240, 50 Hz)
005-018986
TTY Cable
005-019213
BMC Cable
(if
BMC Qty. = 1)
005-010968
BMC Cable (if BMC Qty. = 2)
005-009898
BMC Cable
(if
BMC Qty. = 3)
(1 of 4)
005-010969
BMC Cable
(if
BMC Qty. = 4) J.
005-010972
Terminal Interface COMWITCH-Il Cable (Internal)
005-025369
MV/7800 COMSWITCH-I1 Cable (External)
005-025368
Rack Mounting Kit
005-019199
-5V Booster (Optional)
005-019573
AC Power Cord 120 Vac
109-000719
AC Power Cord 100 Vac
109-000821
AC Power Cord 220/240 Vac
109-000708
DGC CONFIDENTIAL - INTERNAL USE ONLY
1-7
043-003621
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