Garmin 155XL Maintenance Manual - page 4
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