1-1
CONTENTS
SECTION 1 SUMMARY
SERVICING PRECAUTIONS
.............................................................................................................................
1-2
ESD PRECAUTIONS
..........................................................................................................................................
1-3
SPECIFICATIONS
.............................................................................................................................................
.1-4
LOCATION OF USERS CONTROLS
.................................................................................................................
1-5
HOW TO SETTING THE OPTION CODE
..........................................................................................................
1-6
FIRMWARE UPGRADE METHOD
.....................................................................................................................
1-7
HOW TO CONNECT AUDIO SET TO POWER SUPPLY
..................................................................................
1-8
SECTION 2 ELECTRICAL
ELECTRICAL TROUBLESHOOTING GUIDE
....................................................................................................
2-1
1. SYSTEM CONTROL ERROR CORRECTION FLOW CHART .................................................................2-1
2. SOUND ERROR CORRECTION FLOW CHART ......................................................................................2-4
3. DISPLAY ERROR CORRECTION FLOW CHART ....................................................................................2-7
4. TUNER ERROR CORRECTION FLOW CHART .......................................................................................2-8
5. USB ERROR CORRECTION FLOW CHART ............................................................................................2-9
6. AUX ERROR CORRECTION FLOW CHART ..........................................................................................2-11
WAVEFORMS
...................................................................................................................................................
2-12
CIRCUIT VOLTAGE CHART
............................................................................................................................
2-13
INTERNAL BLOCK DIAGRAM OF ICs
...........................................................................................................
2-14
1. IC601 (BD3702FV) ...................................................................................................................................2-14
2. IC801 (LV5693P) .....................................................................................................................................2-15
3. IC804 (TB2931HQ) ..................................................................................................................................2-17
WIRING DIAGRAM
...........................................................................................................................................
2-19
BLOCK DIAGRAMS
.........................................................................................................................................
2-21
1. MAIN BLOCK DIAGRAM .........................................................................................................................2-21
2. FRONT BLOCK DIAGRAM ......................................................................................................................2-23
3. ELECTRICAL BLOCK DIAGRAM ............................................................................................................2-25
CIRCUIT DIAGRAMS
.......................................................................................................................................
2-27
1. MAIN_1 CIRCUIT DIAGRAM ...................................................................................................................2-27
2. MAIN_2 CIRCUIT DIAGRAM ...................................................................................................................2-29
3. FRONT CIRCUIT DIAGRAM ...................................................................................................................2-31
PRINTED CIRCUIT BOARD DIAGRAMS
........................................................................................................
2-33
1. MAIN P.C.BOARD ...................................................................................................................................2-33
2. FRONT P.C.BOARD ................................................................................................................................2-35
SECTION 3 EXPLODED VIEWS
1. CABINET AND MAIN FRAME SECTION ..................................................................................................3-1
SECTION 4 REPLACEMENT PARTS LIST
Summary of Contents for MAX220UB
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