Denon DCD 820 Service Manual

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DENON

Hi- Fa Component

SERVICE MANUAL

STEREO CD PLAYER
MODEL DCD-820

TABLE OF CONTENTS
OPERATING INSTRUCTIONS ........................................................... 2 12
SPECIFICATIONS ....................................................................... 13
NOTE FOR HANDLING OF LASER PICK- UP .............................................. 14~16
DISASSEMBLY ............................... 17
ADJUSTMENT ...................................................................... 18 ~ 24
HEAT RUN MODE FUNCTION .............................................................. 25
IC TERMINAL FUNCTION LIST . . 26 ~ 31
PARTS LIST OF P.W.BOARD ....... . 32. 33
PARTS LIST OF EXPLODED VIEW ........ . 34
PARTS LIST OF PACKING & ACCESSORIES . 34
EXPLODED VIEW ...................... . 35
EXPLODED VIEW OF MECHA UNIT , . . I . 36
PARTS LIST OF MECHA UNIT ............. 36
P.W.BOARD ................ . 37 ~ 38
WIRING DIAGRAM ....................................................................... 39
SEMICONDUCTORS ..................................................................... 40
SCHEMATIC DIAGRAM ................................................................... 41

NIPPON COLUMBIA CO.. LTD.

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IMPORTANT TO SAFETY

WARNING:

TO PREVENT FIRE OR SHOCK HAIARD, DO NOT EXPOSE THIS
APPLIANCE TO RAIN 0R MOISTURE.

CAUTION:

Handle the power supply cord carefully

Do not damage or deform the power supply card. If it is damaged or
deformed, it may cause electric shock or malfunction when used. When
removing from wall outlet, be sure to remove by holding the plug
attachment and not by pulling the cord.

Do not open the top cover

In order to prevent electric shock, do not open the top cover.

If problems occur, contact your DENON dealer.

Do not place anything Inside

Do not place metal objects or spill liquid inside the CD player.
Electric shock or malfunction may result.

Please. record and retain the Model name and serial number of your set
shown on the rating label.

Model No. DEB-820

SAFETY INSTRUCTIONS FOR AUDIO SET

Serial No.

IMPORTANT
(BRITISH MODEL ON LY)

The wires in this mains lead are coloured in accordance with
the following code:

Blue: Neutral

Brown: Live
The colours of the wires in the mains lead of this apparatus
may not correspond with the coloured markings identifying
the terminals in your plug proceed as follows.
The wire which is coloured blue must be connected to the
terminal which is marked with the letter N or coloured black.
The wire which is coloured brown must be connected to the
terminal which is marked with the letter L or coloured red.

This CD player uses the semiconductor laser. To allow you
to enioy music at a stable operation, it is recommended to
use thls in a room of 5°C - 35°C.

NOTE:

I INSTALLATION 3. Select a place so that the location or position does not interfere
1. Operate the set only from a power source which is indicated on with the proper ventilation of the set for releasing heat generated
the rating label (indication) at the back of the set. during operation.
2. Frayed cords and broken plugs may cause a fire or shock hazard. 0 Select a flat and level surface allowing enough space for setting up
Do not damage the power cord. and operation.
0 Do not cut and splice the power cord. 0 Never block the bottom ventilation holes placing the set on a bed,
0 when removing the power cord from wall outlet, be sure to un- sofa. rug.etc.
plug by holding the plug attachment and not by pulling the cord. 0 Never place the set in a "built-in" enclosure unless proper ventila<
Do not hold the plug with wet hands. tion is provided.
0 Call your service technician for replacement of damaged cords and I Never place the set near or over a radiator, heat register or stove.
plugs. l Avoid locations where the set is exposed directly to the sun light.
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\(I/
Check VOIIWB- Do not pinch power cord. Do "3' splice WW 1
I USE
1. Do not expose the set to rain or water (liquid). Do not spill liquid or insert metal objects inside the
set. Rain, water or liquid such as cosmetics as well as metal may cause electric shorts which can
result in fire or shock hazard. If anything gets inside, unplug the power cord and have a DENON
service technician check your set before further use.
2. Never leave your set switched on when leaving the house. For added protection of your audio system
during lightning storm or when the set is to be left unused for a long period of time. be sure to un-
plug the power cord from the wall outlet.
3. Take care so that the set is not dropped to avoid damaging the cabinet which defeats safeguards
or injuring yourself. If the set has been dropped or the cabinet has been damaged, unplug the set
and have it checked by a DENON service technician to restore the safeguards.
I SERVICING
1. The servicing of the set must not be attempted by yourself
beyond that described in the operating instructions. In case
of problems that cannot be settled by referring to your
operating instructions, unplug the power cord and contact
your DENON dealer. No userserviccable parts are inside the
set. Only qualified service technician can service inside your
set.
2. Refer to the operating instructions for maintenance and Do not drop. No user-serviceable parts inside.

cleaning.