Denon PMA-2500NE - Default Chapter; Table of 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
Instructions for handling semi-conductors and optical unit
...7
1. Ground for Human Body
......................................................7
2. Ground for Workbench
........................................................7
TECHNICAL SPECIFICATIONS
.....................................................9
DIMENSION
..............................................................................10
CAUTION IN SERVICING
...........................................................11
Initializing This Unit
................................................................. 11
Service tools
............................................................................11
DISASSEMBLY
..........................................................................12
1. FRONT ASSY
.........................................................................14
2. EQ INPUT PCB
......................................................................14
3. BOTTOM COVER
...................................................................15
4. DIGITAL and DAC PCB
.........................................................15
5. P.RDADI R ASSY
...................................................................16
6. P.RDADI L ASSY
....................................................................17
7. C-HOLD SUB ASSY and DIODE PCB
......................................17
8. AC1 PCB
...............................................................................17
9. AC2 PCB
...............................................................................17
10. TRANS POWER
...................................................................17
SPECIAL MODE
.........................................................................18
Special mode setting button
..................................................18
1. Version Display Mode
..........................................................19
2. Auto standby test mode
......................................................20
3. Factory Initialization Mode
..................................................20
ADJUSTMENT
...........................................................................21
Adjusting Idling Current
..........................................................21
PROCEDURE AFTER REPLACING
THE PRINTED CIRCUIT BOARDS.
............................................22
PROCEDURE AFTER REPLACING
THE MICROPROCESSOR, ETC.
................................................22
FIRMWARE UPDATE PROCEDURE
............................................23
1. Updating via USB-B (U705)
..................................................23
2. Updating via System u-com (U102)
.....................................25
TROUBLE SHOOTING
................................................................32
1. The power cannot be turned on
(Power indicator LED is not lit)
.............................................32
2. The power cannot be turned on
(Power indicator LED lights ashes)
....................................33
3. The power turns on but no sound is output
.......................35
4. DIGITAL PCB
........................................................................36
5. DAC PCB
..............................................................................38
6. DIGITAL PCB DIR BLOCK
......................................................39
7. DIGITAL PCB USB-DAC BLOCK
............................................40
MEASURING METHOD AND WAVEFORMS
...............................41
1. DIGITAL PCB test point
........................................................41
LEVEL DIAGRAM
.......................................................................43
BLOCK DIAGRAM
.....................................................................44
POWER DIAGRAM
....................................................................45
WIRING DIAGRAM
....................................................................46
PRINTED CIRCUIT BOARDS
......................................................47
SCHEMATIC DIAGRAMS (01/9)
.................................................51
SCH01_POWER AMP L R, DIODE
.............................................51
SCH02_TONE, T.SW, P.LED, HP, VOL, EXT.PRE
..........................52
SCH03_INPUT, CD PHONO
......................................................53
SCH04_SEL, FLD, P.SW, AC1, AC2, CON
...................................54
SCH05_DAC
............................................................................55
SCH06_DIGITAL(1/4)
...............................................................56
SCH07_DIGITAL(2/4)
...............................................................57
SCH08_DIGITAL(3/4)
...............................................................58
SCH09_DIGITAL(4/4)
...............................................................59
EXPLODED
................................................................................60
PACKING VIEW
.........................................................................61
SEMICONDUCTORS
..................................................................62
1. IC's
.......................................................................................62
2. DISPLAY
...............................................................................75
CONTENTS
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