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190-00133-02 Rev B 4-1
SECTION 4
DISASSEMBLY AND REASSEMBLY
4.1 INTRODUCTION
This section covers only the disassembly that is necessary to remove a faulty Front Subassembly. Reverse the steps
for assembly.
4.2 INSPECTION
Perform the following inspection and cleaning before disassembly:
1. Verify that all screws are secure and in place.
2. Verify that the transponder external surfaces have no dents, etc.
3. Inspect for bent or broken pins on the 25 pin connector.
4. Inspect for damage to the BNC connector.
4.3 FRONT SUBASSEMBLY (P/N 011-00263-00)
1. Remove power to the unit.
2. Remove the bottom cover (5 screws) to expose internal circuitry.
3. Remove the four black screws holding the front bezel to the frame.
4. Carefully remove the Flex Strip from the Main Board.
Install according to Figure 4-1 to prevent incorrect installation (crystal Y501 is included in the figure for reference
purposes.)
CAUTION
When reinstalling the bottom cover, ensure the proper screws are used to prevent
the possible shorting out of Main Board Components.