the PCB. Now
install the two DC Power Supplies as illustrated. Route the remaining
cords out the rear of the case. Be sure the power cords are seated in
the door cutouts before replacing the Door.

To gain access to the future expansion PCB Housing, remove the
Expansion Door from the top left side of the module.

[Illustration: FIGURE 2. Power Supplies and Future Expansion PCB
Locations.

(Illustration shows the following parts:)

POWER SUPPLY
DOOR

EXPANSION DOOR

RECESSES

RECESSES

HOUSING FOR
FUTURE
EXPANSION
BOARD

TRS-80 DC
POWER SUPPLY

REAR

EXPANSION
INTERFACE DC
POWER SUPPLY

AC POWER
CORD

DC POWER
CORD

NOTE: INSTALL EXPANSION INTERFACE DC POWER SUPPLY =FIRST=.]

=NOTE=

The term "port" as used in this manual refers to the openings
into which the Cable connectors are inserted to provide an
interconnection between the TRS-80 and the Expansion
Interface modules.

The ports, with the exception of the Expansion Interface port, are
also covered by removable Doors. To remove these Doors, press on the
right side of the Door and it will pivot slightly. Grasp the left side
of the Door and pull out (see Figure 3 for locations).

[Illustration: FIGURE 3. Expansion Interface,
Front View--Doors Removed.

(Illustration shows the following parts:)

DOOR--MINI-DISK

DOOR--LINE
PRINTER PORT

DOOR--FUTURE
EXPANSION PORT

DOOR--SCREEN
PRINTER PORT]

=Electrical Connections= (see Figure 4)

Turn the TRS-80 so that it faces away from you. Locate the port Door
(1400083); it's at the right end of the rear panel. To remove the
Door, raise it up and slide it to the right--then lift it up and away
from the TRS-80.

Place the TRS-80 and Expansion Interface Hoods (14000217 and 14000214)
on the Ribbon Cable Connectors as shown in Figure 4. The Hoods replace
the Door on the TRS-80 and fill the opening on the Expansion
Interface. These Hoods are designed so that it is not possible to
insert the connectors upside down. They function as keyways for the
connectors. Now connect the Ribbon Cable between the left front
Expansion Interface port and the TRS-80 port.

Connect the DC Power Cord (DIN connector) to the POWER connector on
the right rear of the TRS-80 and connect both AC Power Cords to
standard 120 VAC outlets.

The interconnect cable for an expansion module is provided with that
unit. See Figure 4 for Hood Assembly and Installation.

Connect the Cassette