Denon PMA-2020AE, Service Manual

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2
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 ................................................8
DIMENSION ...............................................................................8
DISASSEMBLY
........................................................................11
1. REMOTE I/O UNIT ..............................................................12
2. P.AMP(L) UNIT ....................................................................12
3. INPUT UNIT and PH/CD TER.UNIT ....................................14
4. P.AMP(R) UNIT ...................................................................15
5. FRONT PANEL ASSY .........................................................16
6. BOTTOM COVER ...............................................................17
7. CE33W==123M ...................................................................18
IDLING ADJUSTMENT ............................................................19
TROUBLE SHOOTING ............................................................20
1. The power can not be turned on.
(Power indication LED does not light. ） ...................................20
2. The power turned on, but a sound
does not output normally. (Both channels) ..............................20
3. The power turned on, but a sound
does output normally. (Single channel) ...................................21
BLOCK AND LEVEL DIAGRAM .............................................22
WIRING DIAGRAM ..................................................................23
PRINTED WIRING BOARDS ...................................................24
SCHEMATIC DIAGRAMS (1/5) ...............................................29
110132_1.................................................................................29
110132_2.................................................................................30
110133_1.................................................................................31
110133_2.................................................................................32
110134_1.................................................................................33
EXPLODED VIEW ....................................................................34
PARTS LIST OF EXPLODED VIEW
........................................35
PACKING VIEW .......................................................................37
PARTS LIST OF PACKING & ACCESSORIES .......................37
SEMICONDUCTORS ...............................................................38
1. IC's ......................................................................................38
PARTS LIST OF P.C.B. UNIT ..................................................41
8U-110132 INPUT P.W.B. UNIT ASS'Y ..................................41
8U-110133 POWER AMP P.W.B. UNIT ASS'Y .......................45
8U-110134 FLAT AMP P.W.B. UNIT ASS'Y ............................48