Contents
ABOUT THIS MANUAL
.............................................................3
What you can do with this manual ............................................3
Using Adobe Reader (Windows version) ..................................4
SAFETY PRECAUTIONS
..........................................................6
NOTE FOR SCHEMATIC DIAGRAM
.........................................7
NOTE FOR PARTS LIST
...........................................................7
TECHNICAL SPECIFICATIONS
................................................9
DIMENSION
...............................................................................9
PRECAUTIONS DURING SERVICE
.......................................10
Initializing This Unit .................................................................10
DISASSEMBLY
........................................................................ 11
1. FRONT PANEL ASSY ........................................................13
2. HEAT SINK ASSY ..............................................................14
3. DIGITAL PCB .....................................................................15
4. PHONO HDAM PCB ..........................................................16
5. MAIN PCB .........................................................................16
6. STANDBY PCB ..................................................................17
7. TRANS POWER ................................................................17
SPECIAL MODE
......................................................................18
1. Version Display ..................................................................18
2. How to change the Auto Standby Mode .............................18
3. PROTECTION MODE ........................................................19
PROCEDURE AFTER REPLACING THE
MICROPROCESSOR, ETC.
...................................................22
FIRMWARE UPDATE PROCEDURE .....................................22
ADJUSTMENT
.........................................................................30
TROUBLE SHOOTING
............................................................32
1. The power can not be turned on. ......................................32
2. The power can not be turned on. ......................................32
3. STANDBY LED FLASHES WHILE USING UNIT .............33
4. The power turned on, but a sound does not output
normally. .................................................................................33
5. 8U-310151 (DIGITAL PCB) DIR BLOCK ............................34
6. 8U-310151 (DIGITAL PCB) USB-B BLOCK ......................35
MEASURING METHOD AND WAVEFORMS .........................36
LEVEL DIAGRAM
....................................................................40
BLOCK DIAGRAM
...................................................................41
POWER DIAGRAM
..................................................................42
WIRING DIAGRAM
..................................................................43
PRINTED Circuit BOARDS
.....................................................44
SCHEMATIC DIAGRAMS (1/10 )
............................................48
MAIN .......................................................................................48
POWER BUFFER ...................................................................49
PHONO&HDAM ......................................................................50
FRONT ....................................................................................51
SELECTOR STANDBY ...........................................................52
DIGITAL 1 ................................................................................53
DIGITAL 2 ................................................................................54
DIGITAL 3 ................................................................................55
DIGITAL 4 ................................................................................56
DIGITAL 5 ................................................................................57
EXPLODED VIEW
...................................................................58
PACKING VIEW
.......................................................................59
SEMICONDUCTORS
...............................................................60
1. IC's .....................................................................................60
2
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