WAVE GUIDE SWITCH SA-2140 (V2)

TM 11-5840-360-14-1-1

the above, using caution to install the O-ring between

5.15 WAVE GUIDE SWITCH SA-2140 (V2)

the dummy load and the switch assembly.

Paragraphs 5.15.1 and 5.15.2 and their related

subparagraphs

provide

corrective

maintenance

5.16 VIDEO AMPLIFIER AM-6932 (V2, V3, V4)

information for the Wave Guide Switch SA-2140. The

information

includes

troubleshooting

instructions

Paragraphs 5.16.1 through 5.16.3 and their

(5.15.1) and removal and replacement procedures

related subparagraphs provide corrective maintenance

(5.15.2). No alignment procedures are required. The

information for the Video Amplifier AM-6932. The

locations of major components comprising the Wave

information

includes

troubleshooting

instructions

Guide Switch are shown in Figure 5-13. The schematic

(5.16.1), removal and replacement procedures (5.16.2)

diagram, parts list table and assembly drawings

and alignment procedures (5.16.3). The locations of

applicable to Wave Guide Switch SA-2140 are

assemblies and major components within Video

contained in Section 6.7 of Chapter 6.

Amplifier AM-6932 are shown in Figure 5-14.

Schematic diagrams, parts list tables and assembly

5.15.1 Troubleshooting Procedure (V2)

drawings applicable to Video Amplifier AM-6932 are

contained in Section 6.8 of Chapter 6. Access to the

Fault isolation for the Wave Guide Switch SA-

assemblies and components within the Video Amplifier

2140 is facilitated by use of Troubleshooting Chart,

AM-6932 is provided by loosening the six captive

Figure 5-12, which also contains troubleshooting

screws in the front cover and removing the cover.

information for Interface Unit J-3463. Instructions for

use of the troubleshooting chart are given in paragraph

5.16.1 Troubleshooting Procedure (V2, V3, V4)

5.9.1.

Fault isolation within the Video Amplifier AM-

5.15.2 Removal/Replacement Procedures (V2)

6932 is facilitated by use of Troubleshooting Chart,

Figure 5-15. Instructions for use of the troubleshooting

Before initiating any removal or replacement

chart are given in paragraph 5.9.1.

activity at Wave Guide Switch SA-2140, insure that all

power is removed from the equipment by performing the

5.16.2 Removal/Replacement Procedures

following steps:

(V2, V3, V4)

1. Set ON/OFF Safety switch at front of pedestal

Before initiating any removal or replacement

to OFF.

activity at Video Amplifier AM-6932, insure that all

power is removed from the equipment by performing the

2. Set POWER switch to OFF at (master)

following steps:

Indicator.

3. Turn off and tag ship's circuit breakers which

1. Set ON/OFF Safety switch at front of pedestal

supply power to the equipment.

to OFF.

5.15.2.1 Wave Guide Switch Assembly. -

2. Set POWER switch to OFF at (master)

Indicator.

1. Remove power per paragraph 5.15.2.

3. Turn off and tag ship's circuit breakers which

supply power to the equipment.

2. Remove power plug from wave guide switch.

3. Remove the attaching hardware which secures

5.16.2.1 Resolver Drive PCB Assembly A1. -

the waveguide switch assembly to the waveguide

mounting.

1. Remove power per paragraph 5.16.2.

4. Reinstall using the reverse of above.

2. Remove cover by loosening 6 captive screws.

5.15.2.2 Dummy Load. -

3. Disconnect harness at connectors.

4. Remove 4 screws, washers and lockwashers to

release the PCB assembly.

1. Remove power per paragraph 5.15.2.

5. Reinstall using the reverse of above.

2. Perform paragraph 5.15.2.1.

3. Remove the 4 cap screws which secure the

5.16.2.2 Video Amplifier PCB Assemblies A2A1,

dummy load to the switch assembly. Retain the O-ring

A2A2 and A2A3. -

for reassembly.

4. Reinstall the dummy load using the reverse of

1. Remove power per paragraph 5.16.2.

5-70