1
EA-80
TABLE OF CONTENTS
1.
OPERATING INSTRUCTIONS
2.
SERVICE OVERVIEW
2-1. LOCATION OF PRINTED CIRCUIT BOARDS ......................................... 2-1
2-2. NOTE ON INSTALLING COVER ............................................................... 2-1
2-3. CONNECTOR SPECIFICATION ................................................................. 2-2
2-4. PERFORMANCE CHECK MODE ............................................................... 2-3
2-4-1.
Switch, Indicators and Audio Circuit Check .......................................... 2-3
2-4-2.
Switch, Indicators, Audio and Communication Circuit Check
by an Oscilloscope .................................................................................. 2-4
2-4-3.
Indicators, Audio and Communication Circuits
Check by EA-80 Connected to LLC-8000 ............................................. 2-4
2-5. NOTES ON REPAIR PARTS ........................................................................ 2-5
2-5-1.
Notes on Repair Parts ............................................................................. 2-5
2-5-2.
Replacement of Chip Parts ..................................................................... 2-5
3.
SPARE PARTS
3-1. NOTES ON REPAIR PARTS ........................................................................ 3-1
3-2. EXPLODED VIEW ....................................................................................... 3-2
3-3. ELECTRICAL PARTS LIST ......................................................................... 3-3
3-4. SUPPLIED ACCESSORIES .......................................................................... 3-4
4.
SEMICONDUCTOR PIN ASSIGNMENTS
DIODE ............................................................................................................ 4-1
TRANSISTOR ............................................................................................... 4-1
LED ................................................................................................................ 4-1
IC .................................................................................................................... 4-1
5.
BLOCK DIAGRAM
6.
BOARD LAYOUTS AND SCHEMATIC DIAGRAM
SW-952 ........................................................................................................... 6-1
AU-254 ........................................................................................................... 6-2
