Denon DCD-1420 User manual

DENON _......
SERVICE
MANUAL
STEREO CD PLAYER
MODEL DCD-1420
TABLE OF CONTENTS
OPERATING INSTRUCTIONS. 2... 0... ee eee 2~11
NOTE FOR HANDRING OF LASER PIC-UP ......... 0.0.0.0... ce eee eee 12~ 14
DISASSEMBIY. 5 wise. etaee a Saas: ec cated AL bes Reet Biel dee ober BRD aro GRD ended ane ed ea als 15
ADIUSTMENTS ce F fics youk abled Woe Arata Meee Seaa ttan shar a ot ore Ben Pet aioe o taedi lia Wl ate eens ane 16 ~ 22
HEAT RUN MODE FUNCTION .. 2... 2. cc ee eee 23
IC TERMINAL: FUNCTION. s0: ci 0 cece Sdn eee Alea a ae A OS has eae 24 ~ 29
PARTS. LIST-OF P.W:BOARD® 2.0..c5)2 te ee ee ee tee ee Oke eee ee 30 ~ 31
PARTS LIST OF EXPLODED VIEW ... 2... ee ee eee ee 32
EXPLODED: VIEW. 3.4..Not ern cence be aa ed Sabo boa Selanne ede Ee ata 33
PARTS LIST OF PACKING & ACCESSORIES ©... 0.0... 0... cece eee eee 34
PARTS LIST OF FG-402 MECHANISM UNIT. 2... . ee ee ee ees 34
EXPLODED VIEW OF FG-402 MECHANISM UNIT... 2... 2. ee ee ee et 34
WIRING DIAGRAM: i432 kee wate Be ees eed ee A eae See ea ea eS ee a ew 35
POW: BOARD! oi vaitere oa Seer Sek ue SA eed Se ee he ee oe ee Bs 36 ~ 37
SEMICONDUCTORS: sv teiscs oa) 4 eee ae ai BEN Hea a ne Gna date oR eds ee 38
SCHEMATIC: DIAGRAM) sect a ix Wk x ces ee ties oe anid Be ager Ale eh at naa See a each ce die sel dace ee eee 39
NIPPON COLUMBIA Co. LTD.

IMPORTANT TO SAFETY
WARNING:
TO PREVENT FIRE OR SHOCK HAZARD, DO NOT
EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.
CAUTION:
1. Handle the power supply cord carefully
Do not damage or deform the power supply cord. 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.
2. Do not open the top cover
In order to prevent electric shock, do not open the top cover.
lf problems occur, contact your DENON dealer.
3. Do not place anything inside
Do not place metal objects or spil! 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. DCD-1420 Serial No.
SAFETY INSTRUCTIONS FOR AUDIO SET
s INSTALLATION
1. Operate the set only from a power source which is indicated on
the rating label (indication) at the back of the set.
2. Frayed cords and broken plugs may cause a fire or shock hazard.
Do not damage the power cord.
@ Do not cut and splice the power cord.
When removing the power cord from wall outlet, be sure to un-
plug by holding the plug attachment and not by pulling the cord.
Do not hold the plug with wet hands.
@ Call your service technician for replacement of damaged cords and
plugs.
Check voltage. Do not pinch power cord.
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.
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 user-serviceable parts are inside the
set. Only qualified service technician can service inside your
set.
2. Refer to the operating instructions for maintenance and
IMPORTANT
(BRITISH MODEL ONLY)
The wires in this mains fead are coloured in accordance with
the following code:
Blue: Neutral
Brown: Live
The colours of the wires in the mains Sead 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
enjoy
music
at
a
stable
operation,
it
is
recommended
to
use
this
in
a
room
of
5°C
—
35°C.
NOTE:
3. Select a place so that the location or position does not interfere
with the proper ventilation of the set for releasing heat generated
during operation.
@ Select a flat and level surface allowing enough space for setting up
and operation.
@ Never block the bottom ventilation holes placing the set on a bed,
sofa, rug, etc.
e Never place the set in a “‘built-in’’ enclosure unless proper ventila-
tion is provided.
e@ Never place the set near or over a radiator, heat register or stove.
® Avoid locations where the set is exposed directly to the sun light.
Do not splice power cord.
Do not drop. No user-serviceable parts inside.

Thank you for purchasing this DENON Compact Disc Player. Please read
the operating instructions thoroughly in order to acquaint yourself with the
CD player and achieve maximum satisfaction from it.
— TABLE OF CONTENTS —
FEATURES. .........cescsssssssssseccssvecssscstserssstssescseseeesaensnersnsensnatannanevanessoueceserentnenenats 3
NAMES AND FUNCTIONS OF PARTS 4~5
CONNECTION .......cscsscsssssnsssessessesssenesnassaneeneseseeesaesacensenesee we &
OPENING AND CLOSING THE DISC HOLDER AND LOADING ADISC . 6
NORMAL CD PLAYBACK ...
ADVANCED CD PLAYBACK .......... wT ~9
TIMER-CONTROLLED PLAYBACK ..
THE COMPACT DISC .........0.2000200
INSTALLATION PRECAUTIONS ..........:00000
PLAYBACK USING THE REMOTE CONTROL UNIT .........ssseressessesenees 10~ 11
TROUBLESHOOTING
SPECIFICATIONS. ou... cesccsesssssssssssanecseesseseanssssnsseteceesssneneseneenseesenusenensnaeees
Please check to make sure the following items are included with the main
unit in the carton:
(1) Operating Instructions .........ccssssesecseserseenerertetsssecareessetensseees 1
(2) Comme ction Cord uu... ceccssessscsssssssneonseessssssassecenssseessceaaceaneenenses 1
(3) Remote Control Unit RC-217 ....... ee sssscssesseneeceeneserssenteenenes 1
VAROITUS: SUOQJAKOTELOA El SAA AVATA. LAITE
SISALTAA LASERDIODIN, JOKA LAHETTAA
NAKYMATONTA SILMILLE VARRALLISTA
LASERSATEILYA.
ADVARSEL: USYNLIG LASERSTRALING
VED ABNING NAR SIKKER-
HEDSAFBRYDERE ER UDE AF
FUNKTION. UNDGA UDSAET-
TELSE FOR STRALING.
OSYNLIG LASERSTRALNING
VID AVLAGSNANDE AV APPARATENS HOLJE.
UNDVIK EXPONERING AV LASERSTRALNING.
VARNING:
“CLASS 1
LASER PRODUCT”
This digital apparatus does not exceed the Class B limits for radio
noise emissions from digital appratus setout in the Radio Interfer-
ence Regulations of the Canadian Department of Communication.
Le présent appareil numérique n'émet pas de bruites radioélectri-
ques dépassant les limites applicables aux appareils numériques de
la Class B prescrites dans le Réglement sur !e brouillage redio-
électrique édicté par le ministére des Communications du Canada.
FEATURES
The DCD-1420 Compact Disc Player incorporates DENON’s Super Linear
Converter which prevents deterioration of sound quality in PCM playback
systems. This assures accurate reproduction of the digital signals recorded
on compact discs no matter whether they are pure studio recordings or
“live” performance recordings. All parts making up this CD player have
selected with the greatest care in order to produce high quality realistic
playback of the full musical content on compact discs.
(1) Real 20-bit Double Super Linear Converter
The use of Denon’s unique system and D/A converters with excellent
resolution to prevent zero cross distortion, the main cause of reduced
sound quality in the PCM playback system, makes for sound field
reproduction with rich musical expression.
(2) High Performance Digital Filter
The DCD-1420 uses independent real 20-bit D/A converters for the left
and right channels and an 8x oversampling high precision digital
filter to bring out the best of the analog filter and offer clear, crisp
sound.
(3) Remote Control Including Volume Control
Aside from such functions as play, pause, stop and direct search
using the number buttons, the remote control unit also offers volume
control using the “+” and “—” buttons. The remote control functions
greatly enhance operability of the DCD-1420.
{4) Optical Digital Output
The information on the compact disc can be output in digital format to
an external digital processor or D/A unit for playback.
Aside from the coaxial output, the DCD-1420 also includes an optical
output, thereby improving sound quality and eliminating noise
interference.
(5) Simple Playback of 8 cm CD Singles
8cm CD ‘signals can be played without using an adaptor.

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NAMES AND FUNCTIONS OF PARTS
eo ®
@ Po
e
00 800 000
OPEN CLOSE AUTOEDIT AUTOSPACE RANDOM DISPLAY TIME
| PUB Tats OVA SAMPLING
OPTICAL COAMAL OGITAL OUTPUT
= I
ree pee Ed
x k 1 K h
—T
puones | PHONES
tan
——
® @
wer Switch (POWER)
When the power is turned on, “(QQ)” appears on the second
portion on the TRACK NO. display, and if no disc is loaded,
‘“(00se0000)" appears on the digital display and the calendar
lights after a few seconds.
If the power is turned on with a disc already loaded, the total
number of tracks on the disc is displayed on the TRACK NO.
display, the total time is displayed on the TiME display, the
numbers on the music calendar light up to the number of tracks
on the disc, and playback begins.
2) Disc Holder
Place the disc on the disc holder with the label facing up.
Use the open/close button ( & OPEN/CLOSE) © to open and
close the disc holder.
The disc hoider may also be closed by pressing the play button
( >» PLAY) @ or pause button (Il PAUSE) @.
3] Remote Control Sensor
This sensor receives the infrared light transmitted from the
wireless remote control unit.
For remote control, point the supplied remote control unit
RC-217 towards this sensor.
When a signal is transmitted from the remote control unit, the
remote control indicator in the display @ will light up briefly.
4] Display
Random play indicator
Play indicator
The digital display is divided into sections, such as displays for
track number, index, playback time and calendar, as shown
below.
Remaining time of
All r t entire disc
TAHIGaOE
Auto
space
0-track
music
indicator calendar
my ob 2 as
roe
HIM sf 2 3 is
ALL TOTAL AUTO SPACE 16 17 18 19 20
A-B8 SINGLE EMPHASIS PROGRAM
« PAUSE RANDOM
Remote control
A-B repeat Emphasis
indi adi indicator
Pause indicator ieteator : indicator
Remaining time of Program
current track indicator
@ Open/Close Button ( & OPEN/CLOSE)
The
disc
holder
is
opened
and
closed
by
pressing
this
button.
Press
this
button
once
to
open
the
disc
holder,
and
once
again
to
=<
eens
hy CAUTION A\
RISK OF ELECTRIC SHOCK
DONOT.OPEN
When the disc holder is closed with a disc loaded, the disc will
rotate for a couple of seconds while the disc contents are read.
The number of tracks and total playback time on the disc are
then displayed on the digital display @.
@ Auto Edit Button (AUTO EDIT)
The tracks on the CD are automatically split into two halves,
Side A and Side B, like an analog disc, with the division at the
place between tracks which is closest to 1/2 the total playing
time.
When this button is pressed in the stop mode, the total playing
time for the first half and the track numbers on the calendar are
displayed for approximately 2 seconds. Next, the same is done
for the second half, after which the unit is automatically set to
the pause mode at the beginning of the first track. When the
PLAY or PAUSE button is pressed, playback begins, and the unit
is automatically set to the pause mode at the beginning of the
first track of the second half which was previously displayed.
When the PLAY or PAUSE button is pressed again, playback
resumes, and the unit is automatically set to the stop mode at
the end of the last track on the disc.
This function will only work for discs with a total of 20 tracks or
tess. Also, when this function is used the mode is automatically
set to the program mode, so direct search is not possible.
The auto edit function is cleared when the OPEN/CLOSE, STOP
or PROG/DIRECT button is pressed.
The data for the total playing time recorded on the disc and the
actual total playing time of the tracks differ, so there may be a
difference between the time displayed in the stop mode (the
total playing time) and the total of the times of the first and
second halves in the auto edit mode (about 2 seconds).
@ Auto Space Button (AUTO SPACE)
Pressing
this
button
will
cause
the
indicator
to
light
and
a
blank
space
of approximately
4
seconds
is
inserted
between
tracks
during
CD
playback.
Pressing
the
button
once
more,
the
indicator
goes
out
and
the
Auto
Space
feature
is
cancelled.
When
one
of
the
track
search
buttons
(
Kq
or
PPI)
is
pressed,
the
Auto
Space
function
will
not
operate.
The
Auto
Space
function
will
work
during
normal
playback
as
well
as
programmed
playback.
Although
4-second
blanks
are
inserted
between
tracks,
this
additional
time
is
not
reflected
by
the
indication
on
the
time
remaining
display
or
time
display
when
the
Auto
Edit
function
is
engaged.

© ©
@
e® 6© 86 ®
Random Play Button (RANDOM)
e Press this button to play the tracks on the disc in random order.
Disney Button (DISPLAY)
Press this button to turn the indicators on the display window
off.
e When pressed once, only the track number, index number, and
time will remain lit.
e When pressed again, all indicators are turned off, and only the
track number will be displayed except during playback.
Time Mode Button (TIME)
e This button is used to select the desired indication on the TIME
display. The indication on this display will change each time the
button is pressed.
Normally, the elapsed playback time of the current track is
displayed.
Pressing the button once, is displayed and the
remaining time of the current track is displayed.
Pressing once more, is displayed, and total playing
time of remaining tracks is displayed. However, when program-
med play is in progress, the total remaining time of the program
is displayed.
Press the button once again to return to the normal display of
the elapsed playback time of the current track.
Repeat All Tracks Button (ALL)
e Press this button to repeat playback of all tracks.
e When this button is pressed, lights on the display and all
tracks on the disc or in a program will be repeatedly played
back. Press this button once more to disengage the Repeat All
function.
1-track Repeat Button (1)
e Press this button to repeat one track only.
When pressed during playback, the track currently playing is
repeated.
A-B Repeat Button (A — B)
e Press this button for repeat playback between a designated
starting point (A) and an ending point (B). (Refer to page 8 for
details.)
Program/Direct Button (PROG/DIRECT)
e Press this button when you want to enter tracks for program-
med playback. (Refer to page 7 for details.)
Number Buttons (1, 2, 3, 4, 5, 6, 7, 8, 9 and 10)
e Use these buttons for the direct search and program memory
functions.
For direct search, press for example button if you want to
hear track number 3. For track number 12, press then [2].
To program tracks, press the PROG/DIRECT button to set to the
program mode.
+10 Button (+10)
e Press this button first when selecting track numbers over 10.
Use it together with the number buttons. For example, to select
track number ®, press then [5].
For track number 33, press three times, then press [3].
Ciear Button (CLEAR)
e Use this to correct programmed tracks. (Refer to Page 7)
Call Button (CALL)
e Press this button to check the tracks which have been prog-
rammed.
Index Button (INDEX)
e Press this button to start playback from an index within a track.
Use the number buttons to specify the index number.
Play Button ( >» PLAY)
Press this button to start playback of a disc.
e When this button is pressed, [> PLAY] is displayed, and the
track number being played is displayed together with the
elapsed playback time of the track.
e Tracks are shown on the calendar display. Once a track has been
played, the corresponding track number goes out on the
@ Pause Button (Il PAUSE)
Press this button to stop playback temporarily.
e If this button is: pressed during playback, playback is stopped
temporarily, the indicator goes out and the
indicator lights.
e Press this button or the play button ( » PLAY) again to continue
playback.
Stop Button ( HI STOP)
Press this button to stop playback.
The disc will stop rotating, and the number of tracks and total
playing time of the disc are displayed on the TRACK NO. and
TIME displays, respectively.
e In case programmed playback is engaged when this button is
pressed, the number of tracks and total playing time of the
program are displayed.
e Ifthis button is pressed in the stop mode, the program memory
is cleared.
Automatic Search Reverse Button ( Kd )
e Press this button to return the pickup to the beginning of the
present track. Press again to return to other tracks.
e By pressing the button a number of times, the pickup will move
back the corresponding number of tracks.
Automatic Search Forward Button ( DPI )
e Press this button to move the pickup forward to the beginning of
the next track. Press again to move ahead to other tracks.
e By pressing the button a number of times, the pickup will
advance the corresponding number of tracks.
Manual Search Reverse Button ( 44 )
e Press this button during playback for fast reverse search. As
long as the button is kept pressed, music signals are played back
faster than normal.
e Pressing this button when the pause mode is engaged, you can
quickly reverse the pickup to a desired position, three times
faster compared to manual reverse search during playback.
During this time, no sound is heard.
Manual Search Forward Button (: D> )
e Press this button during playback for fast forward search. As
long as the button is kept pressed, music signals are played back
faster than normal.
e Pressing this button when the pause mode is engaged, you can
quickly forward the pickup to a desired position, three times
faster compared to manual forward search during playback.
During this time, no sound is heard.
Headphones Jack (PHONES)
e For private listening, you can connect your headphones to this
jack. Do not raise the volume level too much when listening
through headphones. (Headphones are sold separately.)
Volume Control (LINE OUT/PHONES LEVEL)
e Use this to adjust the output level (VOLUME) of the headphones
or line output (VARIABLE).
e The same operation is possible using the included remote
control unit. (See Page 11)
Output Terminal (FIX-VARIABLE)
e Connect these jacks to the input jacks on your amplifier. (Refer
to page 6 for details on the connections.)
Digital Output Jack (COAXIAL)
e This jack outputs digital data.
e We recommend using a 75-ohm pin cord (available in stores) for
connections.
Digital Output Jack (OPTICAL)
e Outputs digital optically.
Continuous Operation
If the automatic search reverse button @, the automatic search
forward button @), the CALL button ®, or the +10 button ® are held
in, the function of that button will be repeated.

y
7
4
4
i
4
i
4
3
CONNECTION
(1) Connecting the Output Terminal (FIX-VARIABLE)
Use the included pin cords to connect the left (L) and right (R) output
terminal (FiX-VARIABLE) of the DCD-1420 to the CD, AUX, or TAPE
PLAY left (L) and right (R) input jacks of the amplifier.
There are two types of output jacks, one of the variable type and one
of the fixed type. Be sure to use the variable outputs if you want to be
able to control the output levet from the DCD-1420.
: DCD-1420
(2) Connecting the Digital Output Jack (COAXIAL/ OPTICAL}
Use a 75-ohm pin cord to connect the digital output jack (COAXIAL) of
the DCD-1420 to the digital input jack (COAXIAL) on a digital
processor or D/A unit, available in stores.
In the same way, connect the. digital output jack (OPTICAL) on the
DCD-1420 with the optical input on a digital processor or D/A unit
using an optical fiber cable.
DCD-1420
‘
Power outlet
Digital processor or
D/A unit Power outlet
DIGITAL INPUT
OPTICAL
Le)
COAXIAL.
Connection Precautions
e Before proceeding with connections or disconnections of cables and
power cords, be sure to turn all system components off.
e Ensure that all cables are connected properly to the L (left) and R (right)
jacks.
e Insert plugs fully into the terminals.
e Connect the output jacks to the amplifier CD, AUX or TAPE PLAY input
jacks.
OPENING AND CLOSING THE DISC HOLDER AND
LOADING A DISC
Opening and closing the disc holder (This operation only works while the
power is on.)
1. Press the power switch (POWER) to turn on the power.
2. Press the open/close button (“ OPEN/CLOSE).
How to load a disc
e Make sure the disc holder is completely open.
e Hold the disc by the edges and place it on the disc tray. (Do not touch
the signal surface, i.e., the glossy side.)
e When using 12 cm. diameter discs, make sure the outer edge matches
the tray guide circumference (Fig. 1), and when using CD singles (8 cm.
diameter) match the outer edge with the inner tray guide circumfer-
ence. (Fig. 2)
e Press the open/close button (4 OPEN/CLOSE) to close the disc holder.
When the disc holder is closed, the disc is read and after a few seconds
the number of tracks and total playing time are displayed on the TRACK
NO. and TIME displays, respectively.
e@ When the disc holder is open and a disc is loaded, you may also press
the play ( ® PLAY) or pause ( Il PAUSE) button to close the disc holder.
(If the play button ( >» PLAY) is pressed, playback will start immediately
Fig. 1
Tray guide for 12 cm disc (ea)
Fig. 2
Tray guide for 8 cm disc
{CD single}
Caution:
e If your finger should get caught in the disc holder when it closes, press
the open/close button (# OPEN/CLOSE).
e Donot place any foreign objects on the disc tray, and do not place more
than one disc on the tray at a time. Otherwise malfunction may occur.
¢ Donot push in the disc tray manually when the power is off as this may
cause malfunction and damage the CD player.
NORMAL CD PLAYBACK
(1) Starting Playback
DENON ox me vtctin
( >» PLAY)
1 Press the power switch (POWER) to turn on the power.
Load the disc you want to play.
e When the disc holder is closed, the disc is read and the number of
tracks and total playing time of the disc are displayed.
3 Press the play button ( » PLAY).
(2) Stopping Playback
( Mi STOP)
1 Press the stop button ( HJ STOP).
e When all tracks have been played on a disc, playback will stop by itself.
Precautions:
e \Ifno disc has been loaded or the disc has been placed upside down, all
indicators will light.
e@ When the information on the disc cannot be read correctly, for example
due to dust or dirt on the disc, the indicators will read as shown below.
Nothing will be shown on the TRACK NO. and TIME displays, and it
may take quite a while to read the disc.
e When PLAY, PAUSE or NUMBER buttons are pushed just after turning
on the unit with a disc inserted, the “TRACK INDEX TIME M S” display
might not be indicated in the window. This is normal.
In this case, push the STOP button to light-up the display and then,
push your necessary function button.
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1
1
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1
1
:
ADVANCED CD PLAYBACK
(Number
buttons)
e Use the number buttons and the +10 button to input the number of the
desired track.
For example, to play track number 4, press [4], and to play track number
12, press and [2]. Playback will begin from that track.
2] Advancing to the next track
during playback
Press the Automatic search forward button { PPI) during playback.
e The pickup will advance to the beginning of the next track and playback
will continue. Pressing the button several times will forward the pickup
the corresponding number tracks.
3] Returning to the beginning of the
current track during playback ..............c:ccsseseee
Press the Automatic search reverse button ( 'q ) during playback.
e The pickup will return to the beginning of the current track and playback
will continue. Pressing the button several times will return the pickup
the corresponding number tracks.
@ Finding Sections Within a Track
Sevilid etn ciao ag Ga sae spat abebsca apices bed eis vi onaienesesnastadals Index Search
e With this function, you can find and play from the beginning of sections
within the track marked by index numbers.
(Number buttons)
@ “--” appears on the TRACK NO. display when the INDEX button is
pressed.
@ Input the track number using the number buttons.
Next, ’--” appears on the INDEX display. Input the desired index
number, and playback will start from that index number.
For example, to start from index 2 on track number 3, press INDEX, 3,
then 2.
Indexes
e indexes are numbers which are assigned to sections within a
track. Check the disc’s explanatory notes for the index numbers.
e if you input an index number not on the. disc, playback will start
from the last index number on the track.
5) Playing Specific Tracks in a
Specific Order .............ssecsscsersressssssensessneneeaesenenns Programmed Play
e With this function, you can choose any of the tracks on the disc and
program them to play in any order.
e Programming is possible with the disc holder open.
e Up to 20 tracks can be programmed.
e The programmed tracks are shown on the calendar.
(1) Programming
(Number buttons)
(PROG/ DIRECT)
e Press the PROG/DIRECT button so that the indicator
lights, then use the number buttons and the +10 button to program the
tracks.
For example, to program tracks 3, 12, and 7, press 3),
[410], 2, and 77.
The corresponding track number lights on the calendar each time a
track is programmed, the track number is displayed on the TRACK NO.
display, the number of tracks programmed is displayed on the INDEX
display, and the total playing time of the programmed tracks is
displayed on the TIME display. A few seconds after the last track has
been programmed, the total number of tracks programmed is display-
ed on the TRACK NO. display and the total! playing time of the
programmed tracks is displayed on the TIME display.
(2) Checking the Programmed Tracks
(CALL)
e Press the CALL button. ;
The programmed tracks are displayed in order on the TRACK NO.
display each time the CALL button is pressed.
(3) Playing the Programmed Tracks
e Press the ( » PLAY) button to play the tracks in the programmed order.
(4) Correcting a Programmed Track
(Number buttons)
e
Tocorrect
the
last
track
which
ahs
been
progreuinsd:
press
the
CLEAR
button
then
progam
the
track
correcity.
e
Toclear
a
track
in
the
middele
of
the
program,
press
the
CALL
button
to
recall
the
track,
then
press
CLEAR
button,
and
finally
press
STOP
button.
i
i
‘
'
i
i
t
|
c

1
4
‘
(5) Clearing the Program
e@ The entire program is cleared when the PROG/DIRECT button is
pressed again. The program is also cleared when the ( & OPEN/
CLOSE) button is pressed.
e If the PROG/DIRECT button is pressed during programmed play, the
program is cleared and playback continues normally through to the last
track on the disc.
NOTES
e \f programming is done in the play or pause mode, the track
currently playing is programmed at the first position. Other
tracks can be added to the program, but the number of
programmed tracks and the playing time will not be displayed.
Direct search is not possible during programmed play. If the
number buttons are pressed, that track is added to the end of the
program.
Programming is possible with the disc holder open. Track
numbers greater than the number of tracks recorded on the disc
can be programmed, but will be automatically cleared before
playback begins.
The remaining time per track will only be displayed for track
numbers 1 through 20.
The total program time and remaining program time are not
displayed if tracks greater than track number 20 are prog-
rammed.
@ Press the repeat all button (ALL).
@ Press the play button ( >» PLAY).
e Pressing the repeat all tracks button (ALL), is displayed.
e Steps @ and @ above may be reversed.
e Tocancel repeat playback of all tracks, press the repeat all button (ALL)
once more.
e Pressing the repeat all button (ALL) during programmed playback,
playback of the tracks entered into the memory will be repeated.
e Repeating a Single Track ..........:-ssscssssesenesescerenrsensenens 1-track Repeat
(1)
e Press this button if you want to hear a track repeatedly.
Press 1-track repeat button (1)
[Weck ? [teks] Trak? >
The track is repeated continuously.
e When the 1-track repeat button (1) is pressed during playback, only the
number of the track currently playing will remain lit on the calendar, as
long as the track number is not over 20, and that track will be repeated.
e If the track number is 21 or over, the 1-track repeat function will work,
but nothing will be lit on the calendar.
e@ When the 1-track repeat button (1) is pressed in the stop mode, track
number 1 lights on the calendar and the 1 track repeat function is
possible. To start, press the ( » PLAY) button.
e Tocancel 1-track repeat, press the 1-track repeat button (1) once again.
Normal playback will resume.
NOTE:
1-track repeat is possible during the all track repeat function (when the ALL
indicator is on) by pressing the 1-track repeat button (1). When this is done,
the ALL indicator will remain lit, and the all track repeat mode will resume
when the 1-track repeat button (1) is pressed again.
8) Repeating playback of a desired
IIROIVAL i, svcniensvessicenyacesien cies sassaaiuunisacaniutnneendvciuenaivasnminndiacesanun
(A — B)
1. Start playback and press the A-B button when you reach the starting
point of the interval. The indicator starts blinking.
2. Continue playback or advance the pickup using the Automatic search
forward button ( PPI) or manual search forward button ( PP ) until the
ending point is reached. Then press the A-B button once more. The
indicator will light. :
e@ The pickup will now return to the starting point and repeat playback of
the selected interval.
This interval will be repeated until the A-B repeat mode is cancelled by
pressing the A-B repeat button. The indicator goes out.
e A-B repeat playback is not possible during programmed playback.
9) Pausing playback at any POINt ............:cseeeeesecssseeneresstsecceeeasnsee
( Il PAUSE)
e Playback can be temporarily halted and then continued from the same
point in the track.
1. Press the pause button (il PAUSE) during playback.
2. To continue playback, press the play button ( » PLAY) or the pause
button (If PAUSE) once more.
® Audible quick search ...........cccccssssssesseerseresenneeensoes Manual Search
e Using this function, you can cue to a desired point within a track, either
in the forward or reverse direction.
e Release the manual search button ( 44 or DP ) when the desired point
has been reached. Norma! playback then continues.
(1) Manual Search Forward

1. Press the manual search forward button ({ >>) during playback.
Playback of the track is sped up. ;
e Asa reference, the current track number and elapsed playback time
within the track are displayed.
e Manual search forward is approximately three times faster when
engaged during the pause state compared to playback. In this case, no
sound is heard however.
e [Ifthe manual search forward button { >> ) is kept pressed after the end
of the final track on the disc is reached, (33) is displayed and manual
search stops. To return to another point, press the manual search
reverse button ( €q ) until (23) disappears.
(2) Manual Search in Reverse
1. Press the manual search reverse button ({ 44) during playback.
Reverse playback of the track is sped up.
e As a reference, the current track number and elapsed playback time
within the track are displayed.
e Manual search in reverse is approximately three times faster when
engaged during the pause state compared to playback. In this case, no
sound is heard however.
e lf the manual search reverse button ( €q ) is kept pressed after the
beginning of the first track on the disc is reached, (C0) is displayed and
manual search stops. To return to another point, press the manual
search forward button ( PP ) until (( £) disappears.
® Inserting blanks between tracks ............:ssssessreesseeees
e This is convenient feature that will insert 4-second blanks between
tracks, which can be used when recording compact discs on tape.
( > PLAY)
(AUTO SPACE)
1. Pressing the auto space button (AUTO SPACE) will cause the
AUTO SPACE ] indicator to light.
2. Press the play button ( >» PLAY) to start playback.
When a track has been played to its end, a 4-second silence is made
before the next track starts playing.
3. Press the auto space button (AUTO SPACE) again to cancel the
function.
® Searching and Pausing at the Beginning
OR the Track scsscscsscscnicccsccsaccsueccsscecs dav seveeevendatbedidscd aia geciesscineoapceecese
(1) With Direct Search
e Inthis case, the set pauses at the beginning of the track found with the
direct search operation.
(Number buttons)
( 1! PAUSE)
1 Press the number button(s) for the desired track.
2 Press the (II PAUSE) button.
e To start playback, press the { ® PLAY) or (i! PAUSE) button.
(2) With Program Search
e Press the (fl PAUSE) button after the program search operation is
completed. The set will pause at the beginning of the first programmed
track.
® Playing in Random Order ...........ecccccrsseesssseseneeesensesees Random Play
e With this function, the tracks recorded on the disc can be played in a
completely random order.
(RANDOM)
* When the RANDOM button is pressed, the indicator lights
and random play begins automatically.
e ifthe RANDOM button is pressed when tracks have been programmed,
only the programmed tracks will be played, in random order.
e Ifthe RANDOM button is pressed when the repeat function is set, the
tracks will be played through once in random order, then played
through again in a different order, etc.
e During random play, all of the tracks on the disc are displayed rapidly
on the TRACK NO. display, and the track which will be played next
cannot be known until playback starts.
NOTE:
e The remaining time in the total mode cannot be displayed during
random play.
e Ifthe RANDOM button is pressed when in the auto edit mode, the auto
edit mode is cleared.
TIMER-CONTROLLED PLAYBACK
m Operation
1. Turn on the power of al! system components.
2. Set the input selector on the amplifier to correspond to the inputs
the CD player is connected to.
3. Make sure a disc has been loaded in the disc holder.
4. Check the time on the timer and then set the desired turn-on time.
5. Turn the audio timer ON.
Power is turned off automatically in all components connected to
the timer.
6. When the preset turn-on time is reached, power is turned on in the
system components, and CD playback starts from the first track.
gw Connection
DCD-1420
Ssescscaess 6
en ee ee SE FER Fam
Audio Timer,
sold separately

|
|
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1
1
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|
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(oe ety
THE COMPACT DISC
1. Precautions on handling compact discs
e@ Do not allow fingerprints, oil or dust on the surface of the compact
disc. If the signal surface is dirty, wipe it off with a soft, dry cloth.
Wipe in circular motions from the center and out.
Use of DENON’s AMC-12 CD cleaner is recommended.
e¢ Do not use water, benzene, thinner, record sprays, electrostatic
proof chemicals, or silicone-treated cloth to clean discs.
e Always use care when handling discs to prevent damaging the
surface, in particular when removing a disc from the case and
returning it.
Do not bend compact discs.
Do not apply heat to compact discs.
Do not enlarge the hole in the center of the disc.
Do not write on the disc and do not attach any labels.
INSTALLATION PRECAUTIONS
The
CD
player
uses
a
microcomputer
for
controlling
internal
electronic
circuits. In the event that the player is used while a near-by tuner or TV is
turned
on,
although
unlikely,
interference
could
occur
either
in
the
sound
from the tuner or the picture of the TV. To avoid this, please take the
following precautions.
e Keep the CD player as far away from the tuner or TV set as possible.
e
Keep
the
power
cable
and
connecting
cable
of
the
CD
player
separate
from
‘the
antenna
wires
of
the
tuner
and
TV.
e
Interference
is
particular
likely
to
occur
when
an
indoor
antenna
or
a
300-ohm
feeder
cable
is
used.
Thus,
use
of
an
outdoor
antenna
and
75-ohm
coaxial
cable
is
strongly
recommended.
PLAYBACK USING THE REMOTE CONTROL UNIT
The accessory RC-217 remote control unit can be used to control the CD
player from a convenient distance.
(1) Inserting the dry cell batteries
1. Remove the battery cover on the back of the remote control unit.
2. insert two SUM-4 (standard size AAA) dry cell batteries with
correct polarity as indicated inside the battery compartment.
(2) Directions for Use
e Operate the remote control unit while pointing it towards the
remote control sensor on the CD player (see below).
Right 30°
Remote control
sensor
Left 30°
e Condensation will form on the disc surface if it is brought into:'a
warm room from a cold area, such as outdoors during winter. Wait
until the condensation disappears. Never dry discs with hair dryers,
etc.
2. Precautions on storage
e After playing a disc, always return it to its case.
e Keep discs in the cases when they are not to be played. This will
protect them from dust and dirt and prolong their service life.
e Do not store discs in the following places:
1) Places exposed to direct sunlight for a considerable time.
2) Places subject to accumulation of dust or high humidity.
3) Places exposed to high temperatures, such as close to heater
outlets.
300-ohm
feeder
cable
75-ohm
coaxial
cable
Notes on the Batteries
e The remote control unit uses standard size AAA dry cell batteries.
e The batteries will need to be replaced approximately once a year.
Replacement may be necessary earlier depending on how much the
remote control unit is used.
e If, in less than a year from the time new batteries were inserted, the
remote control fails to operate the CD player from a near-by position, it
is time to replace the batteries.
e Insert the batteries properly, following the polarity diagram inside the
battery compartment, in other words make sure (+) and (—) terminals
are properly aligned.
e Batteries are prone to damage and leakage.
Therefore:
e Do not combine new batteries with used ones.
e Do not combine different types of batteries.
e Do not jumper opposite poles of the batteries, expose them to heat,
break them open nor expose of them in open fire.
e if the remote control unit is not to be used for a long period of time,
remove the batteries from the unit.
e ifthe batteries have leaked, remove any traces of battery fluid from the
battery compartment, wiping thoroughly with a dry cloth. Then insert
new batteries.
When a remote control signal is received, the remote control indicator on
front of the CD player lights briefly.
e The remote control unit can be used at a distance up to 8 meters in a
straight line from the CD player. This distance decreases if there are
obstructions blocking the signal path or when the remote control unit is
operated at an angle from the remote control sensor.
e The buttons on the remote contro! unit have identical functions with
those on the CD player.
However, the following functions cannot be remote controlled: Power
ON/OFF.
Cautions on Use
e Do not press the operation buttons on the main unit and on the remote
control unit simultaneously, as this will result in malfunction.
e The remote control unit may not operate properly if the remote control
sensor is exposed to direct sunlight or strong artificial lighting, or if
there is an object between the remote control unit and the remote
control sensor.

REMOTE CONTROL UNIT RC-217
Number buttons
(1 through 10)
Play button { » PLAY)
Automatic search reverse button ( 4d }
Automatic search forward button ( DPI)
Pause button ( Il PAUSE)
Stop button ( @ STOP)
Manual search reverse button ( €4 )
Manual search forward button ( PP )
Clear Button (CLEAR)
Random button (RANDOM)
Display button (DISPLAY)
Disc Holder Open/Close Button
Setting to the Program Mode
e For program search, press the PROGRAM
button then the number buttons (1 through
10 and +70).
e The remote control unit is normally set to
the direct mode.
+10 button
Program button (PROGRAM)
Direct button (DIRECT)
Call button (CALL)
Index button (INDEX)
A-B repeat button (A-B)
1-track repeat button (1)
Auto edit button (AUTO EDIT)
Auto space button (AUTO SPACE)
All tracks repeat button (ALL)
( & OPEN/CLOSE)
Time mode button (TIME) ~
e Direct Search
Normaily,
direct
search
is
possible
simply
by
pressing
the
desired
number buttons.
e
Program
Search
(During
playback,
the
track
which
is
currently
playing
is programmed as the 1st track.)
Press
the
PROGRAM
button,
then
press
the
number
buttons.
For
example,
to
program
tracks
number
3,
11,
and
5,
press
PROGRAM — 3 — +10 and 1 — 5.
To
cancel
the
program,
press
the
DIRECT
button.
Volume buttons (VOLUME)
Use this to adjust the output level (VOLUME) of the
headphones or line output (VARIABLE).
The volume increases when the (+). button is
pressed,
decreases
when
the
(—)
button
is
pressed.
inputting the Track Numbers
For
track
numbers
below
10,
simply
press
the
corresponding
button.
For
track
numbers
of
11
and
greater,
press
the
+10
then
the
number
buttons.
For
example,
for
track
number
22
press
+10
twice
then
2.
Volume
The
volume
control
on
the
unit
will
operate
when
the
volume
buttons
are
pressed.
The
volume
can
be
checked
by
looking
at
the
position
of
the
control.
TROUBLESHOOTING
if
the
CD
player
does
not
seem
to
be
functioning
properly,
check
the
following:
Disc
holder
does
not
open
or
close.
e
ts
the
power
on?
When
a
disc
is
loaded,
90220000
is
displayed.
A
specific
section
of
the
disc
will
not
play.
e
Isthe
disc
dirty
or
scratched?
«0.0...
esses
ceteeereteeeeees
See
page
10
Programmed
playback
does
not
work.
@
Isthe
disc
loaded
properly?
......cccscsseeeecessseeeenseees
See
page
6
e
Have
programming
been
properly
done?
.....
See
pages
7
and
10
When
the
play
button
(
>
PLAY)
is
pressed,
playback
does
not
start.
Incorrect
operation
when
buttons
on
the
remote
control
are
pressed.
e
Isthe
disc
dirty
or
scratched?
........:ceeceescssteteteesteees
See
page
10
e
ls
the
remote
control
unit
being
operated
There is no sound, or it is distorted.
e ls the output cord properly connected to
too
far
from
the
CD
player?
......cccccseeererieeeereseteenenes
See
page
10
e
Are
there
obstacles
blocking
the
ray?
the
AMplifier?
........cccecessseeeeseeteeeesseneetsenessenersesanenene
See
page
6
e
ls
the
remote
control
sensor
exposed
to
strong
light?
e
Have
the
amplifier
controls
been
set
correctly?
e
Are
the
batteries
exhausted?
SPECIFICATIONS
AUDIO
FUNCTIONS
AND
DISPLAY
No.
of
Channels:
2
channels
Functions:
Direct
selection,
automatic
search,
Frequency Response:
2
~
20,000
Hz
programmed
playback,
repeat
playback,
Dynamic
Range:
97
dB
manual
search,
auto
space,
time
mode,
Signal-to-noise
Ratio:
108
dB
auto
edit,
emphasis
feature
Harmonic
Distortion:
0.003%
(1
kHz)
Display:
Track
number,
time,
music
calendar,
Separation:
103
dB
(1
kHz)
and
engaged
modes
Wow
&
Flutter:
Below
measurable
limit:
Others:
:
Headphones
jack
(+0.001%
W.peak)
REMOTE
CONTROL
UNIT
RC-217
Output
Voltage:
2.0
V,
VARIABLE
0~2.0
V
Remote
Control
System:
Infrared
pulse
system
DISCS
Compact
Disc
format
Power
Supply:
3
V
DC;
two
SUM-4
(standard
size
AAA)
GENERAL
CHARACTERISTICS
dry
cell
batteries
Power
Supply:
50/60
Hz,
voltage
is
shown
on
rating
label
External
Dimensions:
60
(2.4
in)
W
x
165
(7.0
in)
H
x
17(0.7
in}D
mm
Power
Consumption:
13
W
Weight:
95
g
(including
batteries)
:
Dimensions:
434
(17.1
in)
W
x
135
(5.2
in)
H
x
SUPPLIED
ACCESSORIES
Pin-plug
connection
cord
4
310
(12.2
in}
Dmm
Weight:
6.3
kg
;
*
Design
and
specifications
are
subject
to
change
without
notice
in
the
course
of
product
improvement.

ehh ethene rat sor eee
NOTE FOR HANDLING OF LASER PICK-UP
DESCRIPTION OF THE COMPONENTS
Slide rack
Label
1. Serial number
OO eh OO
2. Label
KSS-150A
OQO0000 |}————_
O OOO |——_
3. Position of the labels
Object fens
Slide base
Nameplate
+Z-axis direc
Actuator cover
Soidered short circuit
portion (Rear side)
LD,actuator connector (Red)
PD connector (White) ~
This denotes the serial number used for quality control in
the manufacturing plant.
Note: The numbers of figures in English numerals may be
changed.
year
(last figure)
day month | quality control No.
OO O O oO
Lot No. but Oct. Nov. and Dec. are expressed by alphabetical letters
of X, Y and Z.
10 1 107!
oO oO O
O
quality control
LD drive current
Note: e The expressed unit is by mA, with omission of
the decimal point as fof example, 56.5 mA will
be expressed as 565, but the head of English
letter means the control in the manufacturing
plant.
e If a voltage value in between No. 2 and No. 6
pins of TP102 of the servo and signal processor
unit, the value of laser diode current “iop” can
be found by a formula
vi
iop 1% = 2°

ELECTRICAL PIN CONNECTION
1.
PD
connector
(JAPAN
SOLDERLESS
TERMINAL
MFG
CO.
LTD
“PH
series”
8
pin)
HAH
COLOR
:
WHITE
PC Circuit Diagram
O®@O@ODOO®
F
QO|D|PrPIoal|A]m
2
Oo
E
2. Actuator & LD connector (JAPN SOLDERLESS TERMINAL, MFG CO. LTD “PH series” 8 pin)
LD : Actuator Circuit Diagram
Ha)
monn
©®@O®OH OOO
DOO@OOOO®
Short-round
| Pin No. | description :
Tracking
| D | Laser
@ | GND r-|---[---fe
; ' i Focus
: |
: ’
© Fo (-)
Tr (+)
Fo (+)

7
i
(
1
1
)
1
1
}
Cautions for Handling the Laser Pick-up
The laser pick-up KSS-150A is assembled and precisely
adjusted using a sophisticated manufacturing process in our
plant. Do not disassemble or attempt to readjust it. Please
keep the following instructions carefully in handling pick-
up.
1. Handle with Care
(1) Storage
Do not store the pick-up in dusty, high-temperatured
or high-humidity environments. ,
(2) Please take care for preventing from shock by falling
down or careless handling.
2. Laser Diode (LD)
(1) Protect your eyes
The laser beam may damage the human eye, since the
intensity of the focused spot may reach 7 x 10° W/
cm? even if the intensity at the objective lens is
400 uW maximum. As the light beam spreads after
focused through the objective lens, it does not effect
you in the place as far as more than 30 cms. However,
do not look at the laser light beam either through the
objective lens directly nor another lens or a mirror.
(2) Poison of As
Since the LD chip contains As (Arsenic), as GaAs +
GaAlAs, as known as the poison, although the poison
is relatively weak, in comparing with others, e.g.
As,03, AsCl; etc., and the amount is small, avoid
putting the chip in acid or an alkali solution, heating
it over 200°C or putting it into your mouth.
(3) Avoid surge current or electrostatic discharge
The LD may be damaged or deteriorated by it’s own
strong light if a large current is supplied to it, even if
only a short pulse.
Make sure that there is no surge current in the LD
driving circuit by switches or else. Be careful to handle
pick-up as it may be damaged in a moment by human ©
electrostatic
discharge.
The
pins
of
the
LD
are
short-
circuited
by
solder
for
protection
during
shipment.
For safety handling of an LD, grounding the human
body, measuring equipments and jig is strongly recom-
mended. And still it is further desirable to make use of
mat on the platform and floor for handling the LD.
To open the short circuit, remove the soldering quickly
with a soldering iron whose metal part is grounded.
The temperature of the soldering iron should be less
than 320°C (30W).
3. Actuator
(1) The performance of the actuator may be effected if
magnetic material is located nearby, since the actuator
has a strong magnetic circuit. Do not permit dust to
enter through the clearance of the cover.
(2) Cleaning the lens
It may change the specifications by attaching dust or.
ash on the object lens. Clean the lens with a cleaning
paper dampened a little water, not pressing lens with so
much strength by the cleaning paper. ,
4. Metal Bearing
As the metal bearing of Cu-compound sintered alloy is
impregnated with FROIL946P (*Part No. 529 0054 007),
never fail to supply the bushing with the same lubricant at
the time of replacing the pick-up.
5. Handling
Please handle the laser pick-up with holding the slide base
(rosin molded part).
When either a part of human body or some other things
may happen to touch directly with the circuit part of P.W.
Board, it may cause deterioration, take careful attention in
handling this base.
6. Deterioration
When
difficulty
occurs
either
in
focus
or
tracking
adjust-
ment
nor
able
to
adjust
the
focus
or
tracking,
it
seems
that
the
laser
pick-up
is
deteriorated.
In
these
cases,
check
a
value
of
laser
diode
current
and
give
a
decision
for
deterioration.
7. Fundamental Deterioration Decision of Laser Pick-up
(1) If a voltage value in between No. 2 and No. 6 pins of
TP102 of the servo and signal processor unit, the value
of laser diode current “‘iop’’ can be found by a formula
M1
22
(2) If an “iop’’ exceeds +10% compared with the IOP
indication on the laser pick-up nameplate, there is a
fair chance for deterioration when it is checked under
a circumambient temperature 23°C.
(3) When the circumambient temperature changes +10°C,
“iop1” will change +5%. The “iop1” will also be
changed by the passage of time.
(4) In case of the above conditions taking into considera-
tion and performed the adjustment in proper way, if
the HF level at pin No. a) of TP102 on Main Unit,
and in between GND4 becomes 1V or lesser values; or
ajitter occurs great, the laser pick-up may be deterio-
rated,
“iop1" =

DISASSEMBLY
Top Cover
1. Remove 4 upper screws, rear screw, and 4 side screws.
2. Remove Top Cover to arrow direction clear of both
sidees.
@ Front Cover
1. Pull Loader forward and remove Loader Panel.
2. Remove 3 screws.
3. Remove Front Panel clear of upper and lower hooks.
Hook
Loader Panel
Hook
@ Botton Plate
Remove 7 screws.
oe
mt
LO
i
8g
t
Front Panel
Screw
Screw
Ug
|
@ Loader
1. Remove screw, and remove Stopper Plate.
2. Remove Loader Frame forward.
Screw
, Stopper Plate
<i
Loader
Frame
@ Mechanism Unit
1. Remove 4 screws.
2. Remove Mechanism Unit.
@ Clamp Arm
Remove hook as arrow direction.
Clamp Arm
i
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ADJUSTMENT
Microcomputer built in the unit, comprises service program to facilitate servo adjustment by pushing operation button.
1. Start service program
| (1) Turn power switch OFF.
| (2) Shortcircuit pins @), @) of connector (TP102) on P.W.B. (Main Unit)
(Caution) Do not touch other pins.
(3) Turn power switch ON. “
4 (Service program starts, and displays track number ud )
(Caution)
@ When service program started normal operation of buttons will be defeated,
2. Service program function
Function Description
A OPEN/CLOSE Opens or closes the disc holder. *, Opens or closes only when. disc is: stopped.
| —_ e Operate other keys after open or close.
: e Displays track number Hf es
STOP Stops system function. .
| > PLAY Starts focus servo and disc e Push when adjust tracking offset. i
turns. e When completed, displays track number uc.
| Starts focus servo, tracking e When PLAY button is pushed, starts tracking servo and
1
1) PAUSE servo, slide servo, spindle slide servo. me
;
servo,
e
When
completed,
track
number
tia.
| Giher bution Aoornal operation e Do not operate buttons other than above.
. e If misoperated, immediately turn power switch OFF.
(Caution)
| @ Do not use remote control during service program mode.
3. Adjustment
(1) Prior to start adjustment
Before adjusting laser P,U. and spindle motor, be sure adjust turntable height at the time of turntable assembly.
(2) Necessary equipment for adjustment
Dual trace oscilloscope
Reference disc (CA-1094) BHAT
Oscillator (10 Hz ~ 10 kHz, 0 ~ 3 Vp-p) 33 k2
0.001 uF Output
Input
Frequency counter (readable more than 5 MHz) (Main a (Osciloscope)
: Filter for measurement
(Filter for measurement)
afr WN =

(3) Location
MAIN UNIT
2U-1752B/1818A-1
C507 C506
vrior TRIO! = TPI02
T-OF FSET
Vis
[¢
VRIO3
i eugare EJcno(2)
EN VRIO2
8 ROE cad
VRIO4 (3
oat @ YRGo,
¥
FRONT PANEL
(4) Preset
Start service program.
Preset VR101 ~ 105 as per left figure.
VR101
(roreser) 3 O'clock
VR103
(F-OFFSET) eagles
VR102 Y ;
(F-GAIN) 3 O'clock
ean @) 3 O'clock ae @) 6 O'clock
. PLL
. Tracking offset
. Focus gain
. Focus offset
. Tracking gain
. Tracking offset recheck,

4, PLL Adjust
Connection
Counter
Main Unit
Probe
(PLCK) O | oa | O
(GND) Oo O
e Ground Test point [ASY] to GND1 or GND2.
VR105 4.32 MHz + 10 kHz
Note: Some P.C.Board has no GND2.,
e Turn PLL volume VR105 so that frequency counter
reads 4.32 MHz.

5. Tracking offset
Oscilloscope
(DC range)
eae
0.1V/div
Main Unit
Oscilloscope
TP101— owreo10) —Srg tbo
TP101
_@1enoo_
+3»
0-
Adjust Check
(Volume) (Oscilloscope)
.
Push|
4
OPEN/CLOSE
|
and
load
disc
holder
reference
disk.
. Push| 4 OPEN/CLOSE | and close disc holder.
. Push to turn disc. (Displays track number {/7
. Short (+) (-) of oscilloscope and check the base line.
. Adjust VR101 [T-OFFSET] to equalizer upper and lower
amplitude of the waveform,

6. Focus gain
Connection
Main Unit
TP101—@
(FEO)
TP101-—@0O
(FEI)
TP101—©O
(GND)
Filter
—————
Oscilloscope
Counter
(Volume) (Oscilloscope)
e DC range
e X-Y mode
Waveform not right
. Push (Displays track _
number
. Set oscillator to 750 Hz/1 Vp-p.
. Switch oscilloscope input to X-Y mode.
. Adjust VR102 [F-GAIN]} to symmetrize
Lissajous figures to X and Y axes.