Table Of Contents - Denon DCD-720AE Service Manual

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 ..............................................10
DIMENSION .............................................................................10
CAUTION IN SERVICING ........................................................11
Initializing CD Player ...............................................................11
Service Jig ..............................................................................11
Note Handling and Replacement of the Laser pick-up .......12
1. Protection of the LD .............................................................12
2. Precautions when handling the laser CD mechanism .........12
3. Cautions on assembling and adjustment ............................12
4. Determining whether the laser pick-up is defective .............12
DISASSEMBLY ........................................................................13
1. MAIN ASSY .........................................................................15
2. FRONT PANEL ASSY .........................................................16
3. CD MECHANISM ASSY ......................................................17
4. AUDIO/POWER ASSY ........................................................18
SPECIAL MODE ......................................................................19
Special mode setting button ....................................................19
1. Version display mode ..........................................................20
2. VFD check mode .................................................................20
3. Cold start mode ...................................................................20
4. CD test mode ......................................................................21
5. CD heart run mode ..............................................................24
6. Laser on time .......................................................................26
7. Main μ-com version up mode ..............................................26
8. Timer check mode ...............................................................26
WHEN THE MICROPROCESSOR IS REPLACED
WITH A NEW ONE ...................................................................27
PROCEDURE FOR UPGRADING THE VERSION
OF THE FIRMWARE ................................................................27
1. Update for IC11(TMPM330FWFG) ......................................28
2. Update for IC41(TMP92FD28AFG):USB μcom ...................32
TROUBLE SHOOTING ............................................................40
FLOW CHART NO.1 ...........................................................40
FLOW CHART NO.2 ...........................................................40
FLOW CHART NO.3 ...........................................................41
FLOW CHART NO.4 ...........................................................41
FLOW CHART NO.5 ...........................................................41
FLOW CHART NO.6 ...........................................................42
FLOW CHART NO.7 ...........................................................42
FLOW CHART NO.8 ...........................................................42
FLOW CHART NO.9 ...........................................................43
MEASURING METHOD AND WAVEFORMS .........................44
WAVEFORMS .........................................................................46
BLOCK DIAGRAM ...................................................................49
WIRING DIAGRAM ..................................................................50
LEVEL DIAGRAM ....................................................................51
PRINTED WIRING BOARDS ...................................................52
SCHEMATIC DIAGRAMS .......................................................57
POWER AUDIO ......................................................................57
FRONT USB............................................................................58
CD MCU ..................................................................................59
EXPLODED VIEW DCD720AE ................................................60
EXPLODED VIEW DCD520AE ................................................61
EXPLODED VIEW OF CD MECHANISM UNIT .......................62
PARTS LIST OF EXPLODED VIEW DCD720AE ....................63
PARTS LIST OF EXPLODED VIEW DCD520AE ....................65
PARTS LIST OF CD MECHANISM UNIT
DCD720AE&DCD520AE .........................................................67
PACKING VIEW .......................................................................68
PARTS LIST OF PACKING & ACCESSORIES DCD720AE ...68
PARTS LIST OF PACKING & ACCESSORIES DCD520AE ...69
SEMICONDUCTORS ...............................................................70
1. IC's ......................................................................................70
2. FL DISPLAY.........................................................................88
PARTS LIST OF PCB UNIT DCD720AE .................................89
AUDIO_POWER ASS'Y ..........................................................89
CD PCB ASS'Y DCD720AE ....................................................94
PARTS LIST OF PCB UNIT DCD520AE .................................98
AUDIO_POWER ASS'Y ..........................................................98
CD PCB ASS'Y DCD520AE ..................................................102
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