Denon DCD-720AE User manual
D&M Holdings Inc.
SERVICE MANUAL
e
e
Copyright 2012 D&M Holdings Inc. All rights reserved.
WARNING: Violators will be prosecuted to the maximum extent possible.
MODEL JP E3 E2 E1 E1C EA E2R EUT
DCD-720AE
P P
DCD-520AE
P P
CD PLAYER
Ver. 1
S0444-1V01DM/DG1205
• Some illustrations using in this service manual are slightly different from the actual set.
• Please use this service manual with referring to the operating instructions without fail.
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..............................................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
............................12
4. Determining whether the laser pick-up is defective.............12
DISASSEMBLY ........................................................................13
1. MAIN ASSY .........................................................................15
.........................................................16
......................................................17
........................................................18
SPECIAL MODE ......................................................................19
Special mode setting button....................................................19
1. Version display mode ..........................................................20
.................................................................20
3. Cold start mode...................................................................20
4. CD test mode ......................................................................21
5. CD heart run mode..............................................................24
6. Laser on time.......................................................................26
..............................................26
...............................................................26
WHEN THE MICROPROCESSOR IS REPLACED
WITH A NEW ONE...................................................................27
PROCEDURE FOR UPGRADING THE VERSION
OF THE FIRMWARE................................................................27
......................................28
...................32
TROUBLE SHOOTING............................................................40
...........................................................40
...........................................................40
...........................................................41
...........................................................41
...........................................................41
...........................................................42
...........................................................42
...........................................................42
...........................................................43
.........................44
.........................................................................46
BLOCK DIAGRAM...................................................................49
WIRING DIAGRAM..................................................................50
LEVEL DIAGRAM....................................................................51
PRINTED WIRING BOARDS...................................................52
SCHEMATIC DIAGRAMS .......................................................57
......................................................................57
............................................................................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
.........................................................................88
PARTS LIST OF PCB UNIT DCD720AE .................................89
..........................................................89
....................................................94
PARTS LIST OF PCB UNIT DCD520AE .................................98
..........................................................98
..................................................102
3
ABOUT THIS MANUAL
Read the following information before using the service manual.
What you can do with this manual
Search for a Ref. No. (phrase)
(Ctrl+Shift+F)
You can use the search function in Acrobat Reader to
1.Press Ctrl+Shift+Fon the keyboard.
Ctrl
Shift
F
Search button.
3.Click an item on the list.
the search phrase is displayed.
4
Using Adobe Reader (Windows version)
Click this button and check that the printer is set to a
suitable paper size.
Select the following checkbox.
"More Options" : "Current View"
Select the following checkbox.
"" / "" : "Fit"
Add notes to this data (Sign)
manual.
[Example using Adobe Reader X]
ViewSign".
[Example using Adobe Reader 9]
DocumentSign".
Magnify schematic / printed wiring board
diagrams - 1
(Ctrl+Space, mouse operation)
Press Ctrl+Space on the keyboard and drag the
mouse to select the area you want to view.
Ctrl Space
0
Space and drag the mouse.
Ctrl+0on the keyboard.
1.Drag the mouse to magnify the part you want to print.
FilePrint".
4.Click the Print button to start printing.
5
Magnify schematic / printed wiring board
diagrams - 2
(Pan & Zoom function)
[Example using Adobe Reader X]
ViewZoom
"Pan & Zoom".
[Example using Adobe Reader 9]
ToolsSelect & Zoom
then click "Pan & Zoom Window".
Magnify schematic / printed wiring board
diagrams - 3
(Loupe Tool function)
part of a diagram in a separate window.
[Example using Adobe Reader X]
ViewZoom
"Loupe Tool".
[Example using Adobe Reader 9]
ToolsSelect & Zoom
then click "Loupe Tool Window".
6
SAFETY PRECAUTIONS
LEAKAGE CURRENT CHECK
CAUTION Please heed the following cautions and instructions during servicing and
inspection.
◎Heed the cautions!
Cautions which are delicate in particular for servicing
described in the handling instructions.
◎Cautions concerning electric shock!
(1) An AC
you touch internal metal parts when the set is
transformer and wearing gloves when servicing
extra care when the set is energized.
◎Caution concerning disassembly and
assembly!
Wear gloves to protect your hands.
◎Use only designated parts!
parts which have the same properties for replacement.
the important safety parts that are indicated by the z
use the designated parts.
◎Be sure to mount parts and arrange the wires
as they were originally placed!
away from the surface of printed circuit boards.
Care is also taken with the positions of the wires by
arranging them and using clamps to keep them away
everything back as it was originally placed.
◎Make a safety check after servicing!
disconnected when servicing have been put back in
insulation check on the external metal connectors and
check that safety is ensured.
(Insulation check procedure)
the insulation resistance value between the inplug and
d
repaired.
Many of the electric and the structural parts used in
the set have special safety properties. In most cases
the use of replacement parts with higher ratings (rated
power and withstand voltage) does not necessarily
guarantee that safety performance will be preserved.
Parts with safety properties are indicated as shown
below on the wiring diagrams and the parts list in this
which have the designated part number.
(1) Schematic diagrams.......Indicated by the z mark.
(2) Parts lists.......Indicated by the zmark.
designated parts could cause electric
situations.
CAUTION Concerning important safety
parts
7
NOTE FOR SCHEMATIC DIAGRAM
WARNING:
Parts indicated by the z
CAUTION:
is defective.
WARNING:
NOTICE:
Parts indicated by "nsp" on this table cannot be supplied.
When ordering a part, make a clear distinction between "1" and "I" (i) to avoid mis-supplying.
A part ordered without specifying its part number can not be supplied.
General-purpose Carbon Chip Resistors are not included are not included in the P.W.Board parts list.
(Refer to the Schematic Diagram for those parts.)
Parts indicated by the zmark have critical characteristics. Use ONLY replacement parts recommended by the manufacturer.
General-purpose Carbon Film Resistor in the P.W.Board parts list. (Refer to the Schematic Diagram for those parts.)
Part indicated by "★" mark is not illustrated in the exploded view.
WARNING:
1.
2.
3.
4.
5.
6.
±±±±±±±±±±±±±･μμ･μμ･･μ･
NOTE FOR PARTS LIST
8
WARNING AND LASER SAFETY INSTRUCTIONS
FATTENTION DWARNUNG
WAARSCHUWING
AVVERTIMENTO
WARNING
Safety regulations require that the set be restored to its original condition
and that parts which are identical with those specified be used.
Veiligheidsbepalingen vereisen, dat het apparaat in zijn oorspronkelijke
toestand wordt terug gebracht en dat onderdelen, identiek aan de
gespecifieerde worden toegepast.
Bei jeder Reparatur sind die geltenden Sicherheitsvorschriften zu beachten.
Der Originalzustand des Gerats darf nicht verandert werden.
Fur Reparaturen sind Original-Ersatzteile zu verwenden.
Le norme di sicurezza esigono che l’apparecchio venga rimesso nelle
condizioni originali e che siano utilizzati pezzi di ricambiago idetici a quelli
specificati.
Les normes de sécurité exigent que l’appareil soit remis a l’état d’origine et
que soient utilisées les pièces de rechange identiques à celles spécifiées.
“Pour votre sécurité, ces documents
doivent être utilisés par des
spécialistes agrées, seuls habilités à
réparer votre appareil en panne.”
GB NL
I
D
I
F
GB
NL
All ICs and many other semi-conductors are
susceptible to electrostatic discharges (ESD).
Careless handling during repair can reduce life
drastically.
When repairing, make sure that you are connected
with the same potential as the mass of the set via a
wrist wrap with resistance.
Keep components and tools also at this potential.
Tous les IC et beaucoup d’autres semiconducteurs
sont sensibles aux décharges statiques (ESD).
Leur longévité pourrait être considérablement
écourtée par le fait qu’aucune précaution n’est prise
a leur manipulation.
Lors de réparations, s’assurer de bien être relié au
même potentiel que la masse de l’appareil et enfiler
le bracelet serti d’une résistance de sécurité.
Veiller a ce que les composants ainsi que les outils
que l’on utilise soient également a ce potentiel.
Alle IC und viele andere Halbleiter sind
empfindlich gegen elektrostatische
Entladungen (ESD).
Unsorgfältige Behandlung bei der Reparatur
kann die Lebensdauer drastisch vermindern.
Sorgen sie dafür, das Sie im Reparaturfall
dem Massepotential des Gerätes verbunden
sind.
Halten Sie Bauteile und Hilfsmittel ebenfalls
über ein Pulsarmband mit Widerstand mit auf
diesem Potential.
Alle IC’s en vele andere halfgeleiders zijn gevoelig
voor elektrostatische ontladingen (ESD).
Onzorgvuldig behandelen tijdens reparatie kan de
levensduur drastisch doen verminderen.
Zorg ervoor dat u tijdens reparatie via een polsband
met weerstand verbonden bent met apparaat.
Houd componenten en hulpmiddelen ook op
ditzelfde potentiaal.
Tutti IC e parecchi semi-conduttori sono sensibili
alle scariche statiche (ESD).
La loro longevita potrebbe essere fortemente ridatta
in caso di non osservazione della piu grande
cauzione alla loro manipolazione.
Durante le riparazioni occorre quindi essere
collegato allo stesso potenziale che quello della
massa dell’apparecchio tramite un braccialetto a
resistenza.
Assicurarsi che i componenti e anche gli utensili
con quali si lavora siano anche a questo potenziale.
LASER SAFETY
CAUTION VISIBLE AND INVISIBLE LASER RADIATION WHEN OPEN AVOID EXPOSURE TO BEAM
ADVARSEL SYNLIG OG USYNLIG LASERSTRÅLING VED ÅBNING UNDGÅ UDS
Æ
TTELSE FOR STRÅLING
ADVARSEL SYNLIG OG USYNLIG LASERSTRÅLING NÅR DEKSEL Å PNES UNNGÅ EKSPONERING FOR STRÅLEN
VARNING SYNLIG OCH OSYNLIG LASERSTRÅLNING NÄR DENNA DEL ÄR ÖPPNAD BETRAKTA EJ STRÅLEN
VARO! AVATT AESSA OLET ALTTIINA NÄKYVÄLLE JA NÄKYMÄTTÖMÄLLE LASER SÄTEILYLLE. ÄLÄ KATSO SÄTEESEEN
VORSICHT SICHTBARE UND UNSICHTBARE LASERSTRAHLUNG WENN ABDECKUNG GEÖFFNET NICHT DEM STRAHL AUSSETSEN
DANGER VISIBLE AND INVISIBLE LASER RADIATION WHEN OPEN AVOID DIRECT EXPOSURE TO BEAM
ATTENTION RAYONNEMENT LASER VISIBLE ET INVISIBLE EN CAS D'OUVERTURE EXPOSITION DANGEREUSE AU FAISCEAU
USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE
OF PROCEDURE OTHER THAN THOSE SPECIFIED HEREIN
MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.
AVOID DIRECT EXPOSURE TO BEAM
WARNING
The use of optical instruments with this product will
increase eye hazard.
Repair handling should take place as much as possible with
a disc loaded inside the player
WARNING LOCATION: INSIDE ON LASER COVERSHIELD
This unit employs a laser. Only a qualified service person should
remove the cover or attempt to service this device, due to
possible eye injury.
100301DM
9
INSTRUCTIONS FOR HANDLING SEMI-CONDUCTORS AND OPTICAL UNIT
electrostatic charge during unpacking or repair work.
1. Ground for Human Body
charged on the body.
2. Ground for Workbench
<Incorrect>
CBA
Grounding Band
Conductive Sheet or
Copper Plate
<Correct>
CBA
10
TECHNICAL SPECIFICATIONS
[DCD-720AE] [DCD-520AE]
nAudio performance
Analog output
Channels: 2 channels 2 channels
Playable frequency range: 2 Hz – 20 kHz 2 Hz – 20 kHz
Playable frequency response: 2 Hz – 20 kHz 2 Hz – 20 kHz
S/N:
Dynamic range:
Harmonic distortion: 0.0025 % (1 kHz) 0.003 % (1 kHz)
Output level:
Signal type: 16-bit linear PCM 16-bit linear PCM
Sampling frequency: 44.1 kHz 44.1 kHz
Usable discs: Compact Disc Compact Disc
Digital output
Optical:
Emission wavelength: 660 nm 660 nm
nGeneral
Power supply:
Power consumption: 22 W 13 W
Power consumption in standby mode: 0.3 W 0.3 W
Weight : 4.1kg (DCD-720AE)
4.0kg (DCD-520AE)
DIMENSION
265.0
273.0
166.050.0 49.0
19.0 88.0
107.0
434.0
344.0
60.0
45.045.0
2.0 6.0
11
2. Press Power operation button while simultaneously while pressing "1/3"and "8"buttons.
Service Jig
Power operation button
1/3 8
CAUTION IN SERVICING
12
NOTE HANDLING AND REPLACEMENT OF THE LASER PICK-UP
1. Protection of the LD
2. Precautions when handling the laser CD mechanism
3. Cautions on assembling and adjustment
mechanism must be stored that damaging outside forces are not received.
rotation in motor.
4. Determining whether the laser pick-up is defective
w
otherwise.
Protective soldering place for laser diode.
13
DISASSEMBLY
they were originally bundled or placed afterward.
CD ASSY
Refer to "DISASSEMBLY
1. CD ASSY"
and "EXPLODED VIEW"
CD MECHANISM ASSY
Refer to "DISASSEMBLY
3. RADIATOR ASSY"
and "EXPLODED VIEW"
DAC ASSY
Refer to "EXPLODED VIEW"
JOINT ASSY
Refer to "EXPLODED VIEW"
AUDIO/POWER ASSY
Refer to "DISASSEMBLY
4. AUDIO/POWER ASSY"
and "EXPLODED VIEW"
FRONT PANEL ASSY
Refer to "DISASSEMBLY
2. FRONT PANEL ASSY"
and "EXPLODED VIEW"
TOP CABINET
CD ASSY
Refer to "DISASSEMBLY
1. CD ASSY"
and "EXPLODED VIEW"
DOOR
Refer to "EXPLODED VIEW"
REAR PANEL
Refer to "EXPLODED VIEW"
14
About the photos used for "descriptions of the DISASSEMBLY" section
Refer to the diagram below about the shooting direction of each photograph.
were taken from the top of the set.
The viewpoint of each photograph
(Shooting direction)
View from the top
Front side
Shooting direction: B
Shooting direction: DShooting direction: C
Shooting direction: A
NOTE:
schematic diagram).
15
1. MAIN ASSY
Disconnect the connector wires.
CABINET TOP MAIN ASSY
Proceeding :PFCJPFCKPFCI
CN22
FFC
CWC6
CWCN
16
2. FRONT PANEL ASSY
(1) Removing discs.
(2) Remove the door by pulling.
(3) Remove the screws.
CABINET TOP FRONT PANEL ASSY
Proceeding :
Shooting direction: B
View from the bottom
17
Disconnect the connector wires.
3. CD MECHANISM ASSY
CWP1FFC
CWCN
CWJL
CWPB
cut
cut
CABINET TOP FRONT PANEL ASSY
CD MECHANISM ASSY
Proceeding :
CWC6
CWC7
18
4. AUDIO/POWER ASSY
Disconnect the connector wires.
AUDIO/POWER ASSY
JOINT ASSY
CABINET TOP REAR PANEL
DAC ASSY
MAIN ASSY
Proceeding :
CWJL
CWPB
Snap off
19
SPECIAL MODE
Special mode setting button
b
No. Mode Button A Button B Contents
1 Version display mode
2 1
/
3
2
2 5
3 Cold start mode
8 1
/
3
Initializing CD Player.
4 CD test mode
8 5
5 CD heart run mode
9 1
/
3
Heat run mode.
6 Laser on time
9 5
Laser on time are Displayed.
reset. (in this mode)
7
– –
8
1
/
3
Not for service.
1
/
3(1 button)
1/3 8 9
Power operation button iPod/USB
5 2
20
1. Version display mode
Press Power operation button while simultaneously while pressing "2" and "1/3" buttons.
8" or "9
:Main microcomputer version
**:Destination
2. VFD check mode
Press Power operation button while simultaneously while pressing "2" and "5" buttons.
3. Cold start mode
Press Power operation button while simultaneously while pressing "8" and "1/3" buttons.
Initialization item
z
"Laser on time" is not erase. ･････
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