TM 1-6625-476-30
6-1
CHAPTER 6
INDIRECT VIEW DISPLAY ELECTRONICS ASSEMBLY
Section
Page
Preparation for Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I
6-1
Description of Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
II
6-2
Test Prompted Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
III
6-4
Test Prompted References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IV
6-8
Section I. PREPARATION FOR TEST
Subject
Para
Page
Test Preparation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6-1
6-1
UUT Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6-2
6-1
Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6-3
6-1
6-1. TEST PREPARATION.
No special procedures are required to prepare the indirect view display (IVO) electronics assembly for
test. Refer to the UUT/TPS/ interface device matrix tables in appendix B to determine the correct UUT
test program number for the IVO electronics assembly. Then refer to the UUT test program for a list of
cables, test equipment, and test accessories required to test the IVD electronics assembly.
6-2. UUT DESCRIPTION.
The IVD electronics assembly (figure 6-1) is an assembly containing 11 CCAs, a CRT, and associated
electronic components. It mounts to the TADS lower optical relay column and provides the heads out
display with control electronics and video.
6-3. PRECAUTIONS.
Observe the following precautions when testing the IVD electronics assembly:
a. Electric Shock. The IVD electronics assembly operates with a 16,000-volt potential on the C7-anode
and a 4,000-volt focus voltage potential. During yoke alinement, it is possible to receive a deadly electric
shock. Observe all warning notes on the VDT and on the illustrations in section IV when performing this
procedure.
b. Component Damage. Components on the optical signal analyzer and on the IVD electronics
assembly can be damaged when you place the IVD electronics assembly into the OSA or remove it.
Observe all cautions on the illustrations in section IV when performing this action. The reticle glass can
be damaged when inserting it into the IVD electronics assembly CRT screen area, and the high voltage
connector cap can be damaged when tightening the adjacent connector. Use caution at all times when
working with equipment.
