Denon RCD-M39 User manual

D&M Holdings Inc.
SERVICE MANUAL
e
e
Copyright 2015 D&M Holdings Inc. All rights reserved.
WARNING: Violators will be prosecuted to the maximum extent possible.
MODEL JP E3 E2 EK EA E1 E1K E1C
RCD-M39
P P P
RCD-M39DAB
P
CD RECEIVER
Ver.11
•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.
•For purposes of improvement, specications and design are subject to change without notice.
S1170V11DM/DG1512
Please refer to the
MODIFICATION NOTICE.
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2
CONTENTS
ABOUT THIS MANUAL.............................................................3
What you can do with this manual ............................................3
Using Adobe Reader (Windows version) ..................................4
NOTE FOR SCHEMATIC DIAGRAM.........................................7
Specications ...........................................................................9
CAUTION IN SERVICING........................................................10
Initializing STEREO CD RECEIVER .......................................10
Support for Asia-Pacic tropical climate regions .....................10
DISASSEMBLY........................................................................11
About the photos used for "descriptions in the
DISASSEMBLY" section ........................................................12
1. LOADER PANEL ASSY.......................................................12
2. FRONT PANEL ASSY .........................................................13
3. CD MECHA .........................................................................14
4. HEAT SINK SUB ASSY.......................................................15
5. REAR PANEL ASSY............................................................17
6. POWER UNIT ASSY ...........................................................19
7. MCU PCB UNIT ASSY ........................................................19
8. TRANS ................................................................................19
Note Handling and Replacement of the Laser pick-up .......20
1. Protection of the LD.............................................................20
2. Precautions when handling the laser CD mechanism.........20
3. Cautions on assembling and adjustment ............................20
4. Determining whether the laser pick-up is defective.............20
Service Mode ..........................................................................21
How to input ...........................................................................21
1. Version display mode ..........................................................21
2. VFD checking mode ............................................................21
3. Cold start mode (initialization) .............................................22
4. CD test mode ......................................................................22
5. CD heat run mode ...............................................................26
6. Accumulated laser on time display mode............................28
VERSION UPGRADE PROCEDURE OF FIRMWARE............29
1. ABOUT REPLACE THE MICROPROCESSOR WITH
A NEW ONE ...........................................................................29
2. UPDATE MODE ..................................................................29
TROUBLE SHOOTING............................................................45
1. VFD dosen't light .................................................................45
2. No Sound, Noise generated ................................................46
MEASURING METHOD AND WAVEFORMS ..........................50
1. MCUCD PCB : TEST POINT..............................................50
2. INPUT PCB : TEST POINT ................................................51
3. WAVEFORMS .....................................................................52
BLOCK DIAGRAM...................................................................55
CurrentBLOCK DIAGRAM.....................................................56
LEVEL DIAGRAM....................................................................57
WIRING DIAGRAM..................................................................58
PRINTED WIRING BOARDS...................................................59
AMP ........................................................................................59
POWER ..................................................................................59
FRONT ...................................................................................60
SPEAKER ..............................................................................60
CONNECTOR ........................................................................61
CONNETER ...........................................................................61
CONNETER ...........................................................................61
MCU .......................................................................................62
DIGITAL INPUT ......................................................................63
DC-DC ....................................................................................63
REGULATOR .........................................................................63
DAB ........................................................................................63
SCHEMATIC DIAGRAMS (1/3) ...............................................64
MCU&CD ................................................................................64
DIGITAL INPUT.......................................................................65
POWER & AMP ......................................................................66
EXPLODED VIEW ...................................................................67
EXPLODED VIEW OF CD MECHANISM UNIT.......................68
PARTS LIST OF EXPLODED VIEW .......................................69
PARTS LIST OF CD MECHANISM UNIT ...............................69
PACKING VIEW .......................................................................70
PARTS LIST OF PACKING & ACCESSORIES.......................70
SEMICONDUCTORS ...............................................................71
1. IC's ......................................................................................71
2. FL DISPLAY.........................................................................90
PARTS LIST OF PCB UNIT.....................................................93
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ABOUT THIS MANUAL
Read the following information before using the service manual.
What you can do with this manual
Jump to the target of a schematic diagram
connector
Click the Ref. No. of the target connector in the red box
around a schematic diagram connector.
• The screen jumps to the target connector.
• Page magnification stays the same as before the
jump.
Search for a Ref. No. (phrase)
(Ctrl+Shift+F)
You can use the search function in Acrobat Reader to
search for a Ref. No. in schematic diagrams, printed
wiring board diagrams, block diagrams, and parts lists.
1.Press Ctrl+Shift+Fon the keyboard.
• The Search window appears.
Ctrl
Shift
F
2.Enter the Ref. No. you want to search for in the
Search window, and then click the Search button.
• A list of search results appears.
3.Click an item on the list.
• The screen jumps to the page for that item, and
the search phrase is displayed.
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Using Adobe Reader (Windows version)
• Properties
Click this button and check that the printer is set to a
suitable paper size.
• Page to print
Select the following checkbox.
"More Options" : "Current View"
• Page Sizing & Handling
Select the following checkbox.
"Size" / "Size Options" : "Fit"
Add notes to this data (Sign)
The Sign function lets you add notes to the data in this
manual.
Save the le once you have nished adding notes.
[Example using Adobe Reader X]
On the "View" menu, click "Sign".
• The Sign pane appears.
[Example using Adobe Reader 9]
On the "Document" menu, click "Sign".
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.
• The selected area is magnied.
Ctrl Space
0
• When you want to move the area shown, hold down
Space and drag the mouse.
• When you want to show a full page view, press
Ctrl+0on the keyboard.
Print a magnied part of the manual
The Properties dialog box and functions will vary depending on your printer.
1.Drag the mouse to magnify the part you want to print.
2.On the "File" menu, click "Print".
3. Congure the following settings in the Print dialog box.
4.Click the Print button to start printing.
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Magnify schematic / printed wiring board
diagrams - 2
(Pan & Zoom function)
The Pan & Zoom function lets you see which part of a
magnied diagram is being shown in a separate window.
[Example using Adobe Reader X]
On the "View" menu, point to "Zoom", and then click
"Pan & Zoom".
• The Pan & Zoom window appears on the screen.
[Example using Adobe Reader 9]
On the "Tools" menu, point to "Select & Zoom", and
then click "Pan & Zoom Window".
Magnify schematic / printed wiring board
diagrams - 3
(Loupe Tool function)
The Loupe Tool function lets you magnify a specific
part of a diagram in a separate window.
[Example using Adobe Reader X]
On the "View" menu, point to "Zoom", and then click
"Loupe Tool".
• The Loupe Tool window appears on the screen.
[Example using Adobe Reader 9]
On the "Tools" menu, point to "Select & Zoom", and
then click "Loupe Tool Window".
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6
SAFETY PRECAUTIONS
The following check should be performed for the continued protection of the customer and service technician.
LEAKAGE CURRENT CHECK
Before returning the unit to the customer, make sure you make either (1) a leakage current check or (2) a line to chassis
resistance check. if the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of the
power cord is less than 460 kohms, the unit is defective.
Be sure to test for leakage current with the AC plug in both polarities, in addition, in each power ON, OFF and STANDBY
mode, if applicable.
CAUTION Please heed the points listed below during servicing and inspection.
◎Heed the cautions!
Spots requiring particular attention when servicing, such
as the cabinet, parts, chassis,etc., have cautions indicated
on labels. be sure to heed these causions and the
cautions indicated in the handling instructions.
◎Caution concerning electric shock!
(1) An AC voltage is impressed on this set, so touching
internal metal parts when the set is energized could
cause electric shock. Take care to avoid electric
shock, by for example using an isolating transformer
and gloves when servicing while the set is energized,
unplugging the power cord when replacing parts, etc.
(2) Tere are high voltage parts inside. Handle with extra
care when the set is energized.
◎Caution concerning disassembly and
assembly!
Through great care is taken when manufacturing parts
from sheet metal, there may in some rare cases be burrs
on the edges of parts which could cause injury if ngers
are moved across them. Use gloves to protect your hands.
◎Only use designated parts!
The set's parts have specific safety properties (fire
resistance, voltage resistance, etc.). For replacement
parts, be sure to use parts which have the same
poroperties. In particular, for the important safety parts
that are marked z on wiring diagrams and parts lists, be
sure to use the designated parts.
◎Be sure to mount parts and arrange the wires
as they were originally!
For safety seasons, some parts use tape, tubes or other
insulating materials, and some parts are mounted away
from the surface of printed circuit boards. Care is also
taken with the positions of the wores omsode amd clamps
are used to keep wires away from heating and high
voltage parts, so be sure to set everything back as it was
originally.
◎Inspect for safety after servicing!
Check that all screws, parts and wires removed or
disconnected for servicing have been put back in their
original positions, inspect that no parts around the area
that has been serviced have been negatively affected,
conduct an inslation check on the external metal
connectors and between the blades of the power plug,
and otherwise check that safety is ensured.
(Insulation check procedure)
Unplug the power cord from the power outlet, disconnect
the antenna, plugs, etc., and turn the power switch on.
Using a 500V insulation resistance tester, check that the
inplug and the externally exposed metal parts (antenna
terminal, headphones terminal, input terminal, etc.) is
1MΩ or greater. If it is less, the set must be inspected and
repaired.
Many of the electric and structural parts used in the set
have special safety properties. In most cases these
properties are difficult to distinguish by sight, and using
replacement parts with higher ratings (rated power and
withstand voltage) does not necessarily guarantee that
safety performance will be poreserved. Parts with safety
properties are indicated as shown below on the wiring
diagrams and parts lists is this service manual. Be sure to
replace them with parts with the designated part number.
(1) Schematic diagrams ......Indicated by the z mark.
(2) Parts lists ......Indicated by the zmark.
Using parts other than the designated
parts could result in electric shock, res
or other dangerous situations.
CAUTION Concerning important safety
parts
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NOTE FOR SCHEMATIC DIAGRAM
WARNING:
Parts indicated by the zmark have critical characteristics. Use ONLY replacement parts recommended by the manufacturer.
CAUTION:
Before returning the set to the customer, be sure to carry out either (1) a leakage current check or (2) a line to chassis resistance check. If
the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of the power cord is less than 460 kohms, the set
is defective.
WARNING:
DO NOT return the set to the customer unless the problem is identied and remedied.
NOTICE:
ALL RESISTANCE VALUES IN OHM. k=1,000 OHM / M=1,000,000 OHM
ALL CAPACITANCE VALUES ARE EXPRESSED IN MICRO FARAD, UNLESS OTHERWISE INDICATED. P INDICATES MICRO-MICRO
FARAD. EACH VOLTAGE AND CURRENT ARE MEASURED AT NO SIGNAL INPUT CONDITION. CIRCUIT AND PARTS ARE SUBJECT
TO CHANGE WITHOUT PRIOR NOTICE.
NOTE FOR PARTS LIST
Parts for which "nsp" is indicated on this table cannot be supplied.
When ordering of part, clearly indicate "1" and "I" (i) to avoid mis-supplying.
Ordering part without stating its part number can not be supplied.
Not including General-purpose Carbon Chip Resistor in the P.W.Board parts list. (Refer to the Schematic Diagram for those parts.)
Parts marked with this symbol zhave critical characteristics. Use ONLY replacement parts recommended by the manufacturer.
Not including General-purpose Carbon Film Resistor in the P.W.Board parts list. (Refer to the Schematic Diagram for those parts.)
Part indicated with the mark "★" is not illustrated in the exploded view.
WARNING:
1.
2.
3.
4.
5.
6.
●Resistors
RD : Carbon
RC : Composition
RS : Metal oxide film
RW: winding
RN : Metal film
RK : Metal mixture
P : Pulse-resistant type
NL : Low noise type
NB : Non-burning type
FR : Fuse-resistor
F : Lead wire forming
2B : 1/8 W
2E : 1/4 W
2H : 1/2 W
3A : 1 W
3D : 2 W
3F : 3 W
3H : 5 W
F : ±1%
G:±2%
J : ±5%
K : ±10%
M : ±20%
Ex.: RN
Type
14K
Shape
and per-
formance
2E
Power
182
Resist-
ance
G
Allowable
error
FR
Others
*Resistance
1800ohm=1.8kohm1 8 2
Indicates number of zeros after effective number.
2-digit effective number.
1.2ohm1 R 2
2-digit effective number, decimal point indicated by R.
1-digit effective number.
: Units: ohm
●Capacitors
CE : Aluminum foil
electrolytic
CA : Aluminium solid
electrolytic
CS : Tantalum electrolytic
CQ : Film
CK : Ceramic
CC : Ceramic
CP : Oil
CM: Mica
CF : Metallized
CH : Metallized
HS : High stability type
BP : Non-polar type
HR : Ripple-resistant type
DL : For change and discharge
HF : For assuring high requency
U : UL part
C : CSA part
W : UL-CSA part
F : Lead wire forming
0J : 6.3 V
1A : 10 V
1C : 16 V
1E : 25 V
1V : 35 V
1H : 50 V
2A : 100 V
2B : 125 V
2C : 160 V
2D : 200 V
2E : 250 V
2H : 500 V
2J : 630 V
F : ±1%
G:±2%
J : ±5%
K : ±10%
M : ±20%
Z : ±80%
: - 20%
P : +100%
C : ±0.25pF
D : ±0.5pF
= : Others
Ex.: CE
Type
04W
Shape
and per-
formance
1H
Dielectric
strength
3R2
Capacity
M
Allowable
error
BP
Others
･Units:μF.
2200μF2 2 2
Indicates number of zeros after effective number.
2-digit effective number. ･Units:μF.
2.2μF2 R 2
2-digit effective number, decimal point indicated by R
1-digit effective number.
*Capacity (electrolyte only)
･When the dielectric strength is indicated in AC,"AC" is included after the dieelectric strength value.
*Capacity (except electrolyte)
･Units:pF
2200pF=0.0022μF2 2 2
Indicates number of zeros after efective number. (More than 2)
2-digit effective number. ･Units:pF
220pF2 2 1
2-digit effective number.
Indicates number of zeros after effective numver. (0 or 1)
NOTE FOR PARTS LIST
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8
FATTENTION
Tous les IC et beaucoup d’autres semi-
conducteurs 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.
DWARNUNG
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
über ein Pulsarmband mit Widerstand mit
dem Massepotential des Gerätes verbunden
sind.
Halten Sie Bauteile und Hilfsmittel ebenfalls
auf diesem Potential.
WAARSCHUWING
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
hetzelfde potentiaal als de massa van het
apparaat.
Houd componenten en hulpmiddelen ook op
ditzelfde potentiaal.
AVVERTIMENTO
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.
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.
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
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.
030804ecm
WARNING AND LASER SAFETY INSTRUCTIONS
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9
SPECIFICATIONS
DIMENSION
nAudio section
Power amplifer
Rated output:
30 W + 30 W (6 Ω, 1 kHz T.H.D 10 %)
nTuner section
Receiving range (E2,EK model):
FM: 87.50 MHz – 108.00 MHz
DAB (EK model): BAND3 170 MHz – 240 MHz
Receiving range (E3 model):
FM: 87.50 MHz – 107.90 MHz
Usable sensitivity:
FM: 1.2 μV/75 Ω
DAB (EK model): –93 dBm/50 Ω
FM stereo separation: 35dB（1kHz）
nCD section
Playback frequency response: 2Hz ～20kHz
Wow & flutter: Below measurable limits (± 0.001%)
Sampling frequency: 44.1kHz
nClock/Timer section
Clock method: Crystal oscillator (Within 1 – 2 minutes per month)
Timer: Everyday/Once timer: One each
Sleep timer: 90 minutes, maximum
nGeneral
Power supply (E2,EK model): AC 230 V, 50/60 Hz
Power supply (E3 model): AC 120 V, 60 Hz
Power consumption: 70 W
Approx. 0.3 W (standby)
199.045.0 28.0 308.0
272.0
115.0
8.5 106.5
129.1
11.0
25.0
130.0
210.0
152.0 29.029.0
30.0
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10
CAUTION IN SERVICING
Initializing STEREO CD RECEIVER
STEREO CD RECEIVER initialization should be performed when the μcom, peripheral parts of μcom, and Digital PCB.
are replaced.
1. Turn off the power using "Power operation (X)" button, unplug the power cord.
2. Plug the power cord into a power outlet while pressing "8/ –" and "SOURCE" button simultaneously.
＊Initialize.
Support for Asia-Pacic tropical climate regions
Before selling this product, purchase and attach the tropical standard supporting part.
For this part, see the part list on page 67.
For where to attach the part, see the exploded view.
NOTE:

All user settings will be lost and this factory setting will be recovered when this initialization mode.
So make sure to memorize your setting for restoring after the initialization.
8/ -
Power operation (X) SOURCE
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11
DISASSEMBLY
• Disassemble in order of the arrow of the gure of following ow.
• In the case of the re-assembling, assemble it in order of the reverse of the following ow.
• In the case of the re-assembling, observe "attention of assembling" it.
• If wire bundles are untied or moved to perform adjustment or parts replacement etc., be sure to rearrange them neatly
as they were originally bundled or placed afterward.
Otherwise, incorrect arrangement can be a cause of noise generation.
HEAT SINK SUB ASSY
Refer to "DISASSEMBLY
4. HEAT SINK SUB ASSY"
and "EXPLODED VIEW"
HEAT SINK
(Ref. No. of EXPLODED VIEW : 18)
TOP COVER
FRONT PANEL ASSY
Refer to "DISASSEMBLY
2. FRONT PANEL SUB ASSY"
and "EXPLODED VIEW"
FRONT PANEL
(Ref. No. of EXPLODED VIEW : 6)
CD MECHA ASS'Y
Refer to "DISASSEMBLY
3. CD MECHA ASS'Y"
and "EXPLODED VIEW"
CD MECHA
(Ref. No. of EXPLODED VIEW : P8)
REAR PANEL ASSY
Refer to "DISASSEMBLY
5. REAR PANEL ASS'Y"
and "EXPLODED VIEW"
REAR PANEL
(Ref. No. of EXPLODED VIEW : 21)
POWER UNIT ASSY
Refer to "EXPLODED VIEW"
6. POWER UNIT ASS'Y"
and "EXPLODED VIEW"
POWER UNIT
(Ref. No. of EXPLODED VIEW : P1)
MCU PCB UNIT ASSY
Refer to "EXPLODED VIEW"
7. MCU PCB UNIT ASSY"
and "EXPLODED VIEW"
MCU PCB UNIT
(Ref. No. of EXPLODED VIEW : P3)
TRANS
Refer to "EXPLODED VIEW"
8. TRANS"
and "EXPLODED VIEW"
TRANS
(Ref. No. of EXPLODED VIEW : P6)
LOADER PANEL ASSY
Refer to "DISASSEMBLY
1. LOADER PANEL ASSY"
and "EXPLODED VIEW"
LOADER PANEL
(Ref. No. of EXPLODED VIEW : 3)
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12
About the photos used for "descriptions in the DISASSEMBLY" section
• The direction from which the photographs used herein were photographed is indicated at "Direction of photograph: ***"
at the left of the respective photographs.
• Refer to the table below for a description of the direction in which the photos were taken.
• Photographs for which no direction is indicated were taken from above the product.
• The photograph is RCD-M39 model.
1. LOADER PANEL ASSY
(1) Detach the LOADER PANEL.
The viewpoint of each photograph
(Photografy direction)
［View from above］
Front side
Direction of photograph: B
Direction of photograph: D
Direction of photograph: C
Direction of photograph: A
Proceeding : TOP COVER LOADER PANEL
→
CD MECHA
You can slide in the arrow direction to pull out the TRAY.
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13
2. FRONT PANEL ASSY
(1) Remove the screws.
(2) Disconnect the connector wire, then remove the screws.
(3) Cut the wire clamp band, then disconnect the connector wires.
Proceeding : TOP COVER LOADER PANEL
→FRONT PANEL ASSY →
View from bottom
cut
CWAJ
Direction of
photograph: D
Direction of
photograph: C
CWMFFCMA
Direction of photograph: B
cut
cut
Please refer to "EXPLODED VIEW" for the disassembly method of each PCB included in FRONT PANEL ASSY.
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14
3. CD MECHA
(1) Remove the screws.
(2) Pull out the TRAY.
(3) Cut the wire clamp band, then disconnect the connector wires. Remove the screws.
Proceeding : TOP COVER LOADER PANEL
→FRONT PANEL ASS'Y →
CD MECHANISM ASS'Y
→
Direction of photograph: D
CD MECHA
You can slide in the arrow direction to pull out the TRAY.
Direction of photograph: B
CMMD
FCMC
PMUP
PMMO
PMSN
cut
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15
4. HEAT SINK SUB ASSY
(1) Cut the wire clamp band, then disconnect the connector wires.
(2) Remove the screws.
Proceeding : TOP COVER LOADER PANEL
→FRONT PANEL ASS'Y →
HEAT SINK SUB ASSY
→
CMMD
CBSK
CWIL
CWSQ
cut
cut
Direction of photograph: B
Direction of photograph: C
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(3) Remove the screws.
(4) Disconnect the connector wires.
View from bottom
HEAT SINK SUB ASSY
CBAM
Direction of photograph: C
Please refer to "EXPLODED VIEW" for the disassembly method of each PCB included in HEAT SINK SUB ASSY.
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5. REAR PANEL ASSY
(1) Remove the screws.
(2) Remove the screws.
(3) Remove the screws.
Proceeding : TOP COVER LOADER PANEL
→FRONT PANEL ASS'Y →
HEAT SINK SUB ASSY
→
REAR PANEL ASSY
→
Direction of photograph: A
View from bottom
Direction of photograph: C
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18
(4) Disconnect the connector wire, then remove the screws.
(5) Remove the screws.
PMSE
FCMC
CN91
Direction of photograph: B
Direction of photograph: D
Please refer to "EXPLODED VIEW" for the disassembly method of each PCB included in REAR PANEL SUB ASSY.
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19
6. POWER UNIT ASSY
Please refer to "EXPLODED VIEW" for the disassembly method of POWER UNIT.
7. MCU PCB UNIT ASSY
Please refer to "EXPLODED VIEW" for the disassembly method of MCU PCB UNIT.
8. TRANS
Proceeding : TOP COVER LOADER PANEL
→FRONT PANEL ASS'Y →
HEAT SINK SUB ASSY
→
REAR PANEL ASSY
→
POWER UNIT ASSY
→
Proceeding : TOP COVER LOADER PANEL
→FRONT PANEL ASS'Y →
HEAT SINK SUB ASSY
→REAR PANEL ASSY →MCU PCB UNIT ASSY →
Proceeding : TOP COVER LOADER PANEL
→FRONT PANEL ASS'Y →
HEAT SINK SUB ASSY
→REAR PANEL ASSY →POWER UNIT ASSY →
→
TRANS
Please refer to "EXPLODED VIEW" for the disassembly method of TRANS.
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20
NOTE HANDLING AND REPLACEMENT OF THE LASER PICK-UP
1. Protection of the LD
Short a part of the LD circuit by soldering. After connection to a circuit, remove the short solder.
2. Precautions when handling the laser CD mechanism
• Handle the laser pick-up so that it is not exposed to dust.
• Do not leave the laser pick-up bare. Be sure to cover it.
• If dust adheres on lens of the pick-up, blow it off with a blower brush.
• Do not shock the laser pick-up.
• Do not watch the light of the laser pick-up.
3. Cautions on assembling and adjustment
• Be sure that to the bench, jig, head of soldering iron (with ceramic) and measuring instruments are well grounded.
• Workers who handle the laser pick-up must be grounded.
• The nished mechanism (prior to anchoring in the set) should be protected against static electricity and dust. The
mechanism must be stored that damaging outside forces are not received.
• When carrying the nished mechanism, hold it by the chassis body
• For proper operation, storage and operating environment should not contain corrosive gases. For example H2S, SO2,
NO2, CI2 etc. In addition storage environment should not have materials that emit corrosive gases especially from
silicic, cyanic, formalin and phenol group. I the mechanism or the set, existence of corrosive gases may cause no
rotation in motor.
4. Determining whether the laser pick-up is defective
Protective soldering place for laser diode.
Measure the waveform at RFO on "MCU CD PCB wRFO".
(For measuring points and waveforms, Rrfer to 50 page.)
Laser drive current (Iop) check
(For how to check, see 4. CD test mode, 4.7.Laser current is display.)
Traverse Unit replacing
Disc no read, unsteady playback, etc.
Laser current (IOP) memorizing after replacement
NO
Range between 0.4 and 1.1(Vp-p)
Present value exceeds the initial value
by 1.5 times
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