TM 11-6625-3145-14
Verification and Adjustment Procedures-318/338 Service
d. Place the square pin strips back to back and solder the last pins on each end of the strips together. (You should
now have the outermost four pins on each end of the assembly soldered together.)
e. Now solder together the middle nine sets of pins so that all nine middle sets are electrically connected.
f. Clip the end set of four pins (one pin off each strip) from one end of the square-pin assembly. This is now the
back end of the assembly. The front set of four pins (those not soldered to the middle nine sets) will be connected
to ground.
3.
Assemble the parts
a. Refer to Figure 5-2. Solder the ground lug from the BNC plug to the first set of four pins (front end) on the square-
pin assembly. It is important that this connection be as short as practical to avoid high-speed signal loss.
b. Solder one end of the 50 ohm resistor to the scope probe connector’s ground lug.
c. Attach the scope probe connector and the BNC connector (including ground lugs and attached square-pin
assembly) to the chassis.
d. Bend the tail end of the aluminum chassis up and glue it to the back end of the square-pin assembly.
e. Solder the center connectors from the BNC connector, and the oscilloscope probe connector to the center nine pin
sets on the square-pin assembly. Keep this connection as short as practical to avoid high-speed signal loss.
f. Solder the remaining lead from the 50 ohm resistor to the center pin of the BNC connector. The test fixture is
ready for use.
Figure 5-2. Assembled Test Fixture
5-3
Summary of Contents for 318
Page 119: ...318 VERIFICATION AND ADJUSTMENT PROCEDURES ...
Page 182: ...338 VERIFICATION AND ADJUSTMENT PROCEDURES ...
Page 253: ...318 ___________________ TROUBLESHOOTING TREES ...
Page 344: ...338 TROUBLESHOOTING TREES ...
Page 517: ...TM 11 6625 3145 14 318 338 4434 923 318 Block Diagram ...
Page 518: ...TM 11 6625 3145 14 318 338 4434 924 338 Block Diagram ...
Page 519: ...TM 11 6625 3145 14 318 338 4434 925 318 Acquisition Module Wiring Diagram ...
Page 520: ...TM 11 6625 3145 14 318 338 4434 926 318 338 Mainframe Wiring Diagram ...
Page 521: ...TM 11 6625 3145 14 318 338 4434 926 338 Acquisition Module Wiring Diagram ...
Page 522: ...TM 11 6625 3145 14 318 338 4434 928 Figure 9 1 318 A01 Input A Board Component Locations ...
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Page 528: ...TM 11 6625 3145 14 Figure 9 3 318 338 A03 ACQ Control Board Component Locations ...
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Page 542: ...TM 11 6625 3145 14 Figure 9 8 318 338 A10 CRT Board Component Locations ...
Page 544: ...TM 11 6625 3145 14 Figure 9 9 318 338 A11 Inverter Board component Locations ...
Page 546: ...TM 11 6625 3145 14 Figure 9 10 318 338 A12 Regulator Board Component Locations ...
Page 551: ...TM 11 6625 3145 14 Figure 9 12 338 A01 Input A Board Component Locations ...
Page 553: ...TM 11 6625 3145 14 318 338 SERVICE ...
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