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190-00067-25 Rev D
ii
TABLE OF CONTENTS
(Continued)
3.5 TROUBLESHOOTING............................................................................................... 3-6
3.5.1 Table Notes ............................................................................................................... 3-7
3.6 EXTERNAL CONNECTORS...................................................................................... 3-8
3.7 INTERCONNECT DIAGRAM................................................................................... 3-10
Section 4
DISASSEMBLY AND REASSEMBLY
4.1 INTRODUCTION ....................................................................................................... 4-1
4.2 REQUIRED TOOLS................................................................................................... 4-1
4.3 DISASSEMBLING THE UNIT .................................................................................... 4-1
4.3.1 Removing the Covers................................................................................................. 4-1
4.3.2 Control/Display Unit ................................................................................................... 4-2
4.3.3 Removing the Altitude Decoder Chassis Subassembly.............................................. 4-2
4.3.4 Interface Board Removal ........................................................................................... 4-2
4.3.5 CPU Board Removal.................................................................................................. 4-3
4.3.6 GPS Receiver Assembly Removal and Disassembly................................................. 4-3
4.3.7 Power Switch Assembly Removal.............................................................................. 4-4
4.3.8 Rotary Switch Assembly Removal ............................................................................. 4-4
4.3.9 Display Module Assembly.......................................................................................... 4-4
4.3.10 Remote Battery Pack and Charger Disassembly ....................................................... 4-5
4.4 REASSEMBLY........................................................................................................... 4-5
Section 5
TESTING
5.1 INTRODUCTION ....................................................................................................... 5-1
5.2 TEST EQUIPMENT.................................................................................................... 5-1
5.3 MEMORY BATTERY REPLACEMENT...................................................................... 5-2
5.4 TESTING ................................................................................................................... 5-3
5.4.1 Test Setup .................................................................................................................5-3
5.4.2 Test Procedure .......................................................................................................... 5-3