CONNECTOR PANEL ASSEMBLY REPLACEMENT

TM 11-6625-3024-14/EE641-AC-MMA-010/E154 SYSEX/TO 33AA50-5-1-1

6. Remove 6 attaching screws, lock washers

9. Replace the dust cover assembly using 6

and flat washers, to remove the Mother Board

attaching screws along the front edge of the hinge

cover (2).

bracket.

7. Remove connector J7 (3) from Mother

10. Replace Power Supply Assembly, following

Board.

the procedures in paragraph 5-16, Power Supply

Replacement.

8. Remove 2 screws from connectors J9, J11,

J12, and J13 (4) and disconnect from connector

5-23. FUSE REMOVAL AND

panel assembly. Remove cable clamp (5) screw,

REPLACEMENT

lock washer, and flat washer.

1. Fuses 1A2F1 and 1A2F2. To remove and

9. Remove 7 attaching screws to remove the

replace the +28 volt transport power fuse 1A2F1

connector assembly rear bracket (6).

(5 amp SLO-BLOW) and the 28 volt Exerciser

lamps fuse 1A2F2 (3 amp SLO-BLOW), open the

10. Remove 6 attaching screws along top side

bottom access door located under the cabinet.

of connector panel assembly front bracket (7).

(See Figure FO-15.)

(See Figure FO-16 for attaching hardware loca-

tion.)

2. Fuses 1A1A3F1, 1A1A2F1 and 1A1A2F2.

To remove and replace the main fuse 1A1A3F1

11. The connector panel assembly can now be

(5 amp SLO-BLOW), the +5 Vdc #1 fuse

removed.

1A1A2F1 (4 amp SLO-BLOW) and the + 5 Vdc

#2 fuse 1A1A2F2 (4 amp SLO-BLOW), open the

5-22. CONNECTOR PANEL ASSEMBLY

top access door located on the top of the cabinet.

REPLACEMENT

(See Figure FO-15.)

1. Install the connector panel assembly using

5-24. SCHEMATIC NOTES

6 attaching screws along the top side of the con-

nector panel assembly front bracket (7). (See Fig-

1. All resistors on schematic diagrams identi-

ure 5-4, Connector Panel Assembly and Figure

fied with a "U" reference designator are part of a

FO-16 for attaching hardware.)

dual-in-line resistor pack.

2. Install the rear bracket (6) using 7 attaching

2. Assembly unit or subassembly unit prefix is

screws.

not shown on reference designators, i.e., R1 =

1A1A2R1.

3. Install connectors J9, J11, J12, and J13 us-

ing 2 screws (4). Install cable clamp using one

3. Input and output signal destinations are

screw (5).

shown at the connector as circuit card number and

connector pin number,

4. Install connector J7 (3) on Mother Board,

5. Install Mother Board cover (2) using 6 at-

taching screws.

6. Install connector assembly cover (1) using

2 attaching screws.

7. Slide the top and bottom card frame paneIs

into place. The panels slide into the side panels

from the rear of the frame assembly. (See Figure

FO-15.)

8. Install 3 attaching screws on the back of each

panel.

5-18