Sony MICROFILM CDP-502ES User manual

SPECIFICATIONS
COMPACT DISC PLAYER
System Compact disc digital audio system
Disc Compact disc
Laser Semiconductor laser (A = 780 nm)
Laser. output
Spindle speed
Scan velocity
Error correction
Max.0.6 mW *
*This output is the value measured at a
distance of about 1.6 mm from the objective
lens surface on the Optical Pick-up Block.
200 r.p.m. to 500 r.p.m. (CLV)
1.2 — 1.4 misec.
Sony Super Strategy Cross Interleave
‘Reed Solomon Code
Number of channels 2
D-A conversion
16-bit linear
Frequency response 2 — 20,000 Hz +0.5 dB
Harmonic distortion
Dynamic range
Channel separation
Wow and flutter
Outputs
Less than 0.0025% (1 KHz)
More than 96 dB
More than 95 dB
Below measurable limit
Line outputs
FIXED (phono jacks)
Output level 2 V rms (at MSB)
Load. impedance over 10 kilohms
VARIABLE (phono jacks)
Disc
Track pitch
Sampling frequency
Quantization
Modulation system
Transfer rate
General
Power requirements
Power consumption
Dimensions
Weight
CDP-620ES:
US Model
Canadian Model
CDP-502ES:
AEP Model
UK Model
E Model
1.6 ym
44.1 kHz
16 bit linear quantizing/channel
EFM
2.03 Mbit/sec. (before modulation)
CDP-502ES
AEP. Model: 220 V ac
UK Model: 240 V ac
E Model: 110,120, 220 or 240 V ac adjustable
50/60 Hz
CDP-620ES
US, Canadian Model: 120 V ac, 60 Hz
16W
Approx. 430 x 80 x 335 mm (w/hid)
(17 x 34/4 x 13%/4 inches)
including projecting parts and controls
Approx. 8.5 kg (18 Ibs 12 02), net
ATTENTION AU COMPOSANT AYANT RAPFORT
A LA SECURITE!
Max. output level 2 V rms (at MSB)
Load impedance over 50 kilohms
Headphones (stereo phone jack)
28 mW at 32 ohms
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY SHADING AND MARK
A ON THE SCHEMATIC DIAGRAMS AND IN THE
PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS
WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS
MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
MICROFILM |
LES COMPOSANTS IDENTIFIES PAR UNE TRAME ET
UNE MARQUE A SUR LES DIAGRAMMES = SCHE-
MATIQUES ET LA LISTE DES PIECES SONT CRITIQUES
POUR LA SECURITE DE FONCTIONNEMENT. NE REM-
PLACER CES COMPOSANTS QUE PAR DES PIECES .
SONY DONT LES NUMEROS SONT DONNES DANS CE
MANUEL OU DANS LES SUPPLEMENTS PUBLIES PAR
SONY. ;
COMPACT DISK PLAYER
SONY.

CDP-502ES/6205S |
PROTECTION
OF
EYES
FROM
LASER
BEAM
DURING
SERVICING
This
set
employs
a
laser.
Therefore,
be
sure
to
fol-
low
carefully
the
instructions
below
when
servicing.
WARNING !!
WHEN
SERVICING,
DO
NOT
APPROACH
THE
LASER
EXIT
WITH
THE EYE
TOO
CLOSELY.
IN
CASE
IT
IS
NECESSARY
TO
CONFIRM
LASER
BEAM
EMISSION,
BE
SURE
TO
OBSERVE
FROM
A
DISTANCE
OF
MORE
THAN
30cm
FROM
THE
SURFACE
OF
THE
OBJECTIVE
LENS
ON
THE
OPTICAL
PICK-UP
BLOCK.
LASER
WARNING
LABELS
The labels shown below are affixed.
1. Protective Housing Label
DHHS
Non-Interlocked
Protective
Housing
Label
(US, Canadian model)
DANGER
INVISIBLE LASER
RADIATION WHEN
OPEN.
AVOIO DIRECT
EXPOSURE 10
BEAM.4-908-401-01
2. Interlock defeatable Label
(US, Canadian model)
DANGER
INVISIBLE LASER RADIATION
WHEN OPEN AND INTERLOCK
DEFEATED. AVOID. DIRECT
EXPOSURE TO BEAM.
4-908-402-01
sete
e US, Canadian model
Non-Interlocked
Protective Housing
Label
DANGER
INVISIBLE LASER
RACIATION WHEN
Interlock defeatable
Label
OIRECT
EXPOSURE TO
BEAM.4-208-401-01
DANGER
INVISIBLE LASER RADIATION
WHEN OPEN ANDO INTERLOCK
DEFEATED. AVOID DIRECT
EXPOSURE TO BEAM.
4-908-402-01
_~\
\
1.
Laser
Diode
Properties
f
Material: GaAlAs
Wavelength: 780 nm
Emission Duration: continuous
Laser Output: max. 0.6 mW*
*
This
output
is
the
value
measured
at
a
distance
of
about
1.6
mm
from
the
objective
lens
surface
on
the
Optical
Pick-up
Block.
®@ Classification: Class IIb
.
During
service,
do
not
take
the
Optical
Pick-up
Block
apart,
and
do
not
adjust
the
APC
circuit.
If
there
is
a
breakdown
in
the
APC
circuit
(inclu-
ding
laser
diode),
replace
the
entire
Optical
Pick-
up
Block
(including
APC
board).
2.
Aperture
Label.
....,
(AEP,
UK,
E
model)
AVOID EXPOSURE
INVISIBLE LASER
RADIATION IS EMITTED
FROM THIS APERTURE.
4-908-404-01
@
See
figure
on
next
page
for
location
of
label.
3. Caution Label (AEP, UK,E model)
CAUTION
ANO. !INTERLOCKS DEFEATED.
ADVARSEL :
+ INVISIBLE LASER RADIATION WHEN OPEN
AVOID EXPOSURE TO BEAM.
USYNLIG LASEASTRALING VED ABNING
NAR SIKKERHEOSAFBRYOERE ER UDE AF FUNKTION UNDGA
UDSATTELSE FOR STRALING.
@ AEP, UK, E model
Caution Label
a
\
SS Aperture Label

oe a
_ CDP-502ES/620ES
BESKYTTELSE
AF
OJNE
MOD
LASERSTRALING
UNDER
SERVICE
I dette apparat
anvendes
nedenstaende instruktioner naje falges under service.
laserlys.
Derfor
Folg iavrigt instruktionerne i servicemanualen.
ADVARSEL!!
Under service ma @jnene ikke komme ner objektiv-linsen
pa den optiske pick-up enhed. | tilfeelde af at det er
ngdvendigt at kontrollere udsendelsen af laserlys, skal
det ske i en afstand af mere end 30cm fra den optiske
pick-up.
1. Data for Laser Diode
@ Materiale: GaAlAs
@ Bolgelengde: 780 nm
@ Udstraling: Kontinuerlig
@ Laser Output: max. 0.6 mW*
* malt i 1.6 mm afstand fra overfladen af objektiv-
linsen pa den optiske pick-up enhsd.
Klassifikation: Svarende til klasse IIb
. Adskil aldrig den optiske pick-up enhed under service,
og juster ikke APC kredsloabet (Automatic Power
Control).: Hvis APC kredslobet (incl. laser-dioden)
bryder ned, skal hele den optiske pick-up enhed (incl.
APC printkortet) udskiftes.
LASER ADVARSEL MAERKNING (AEP model)
Folgende mzrkning findes indvendig i apparatet:
1. Advarsel Meerkning
CAUTION — = invisiBLe LASER RAOLATION WHEN OPEN
AND INTERLOCKS DEFEATED.
AVOID EXPOSURE TO BEAM.
ee
ADVARSEL *< usyniiG LASERSTRALING VED ABNING
NAR SIKKERHEDSAFBRYDERE ER UDE AF FUNKTION UNDGA
UOSATTELSE FOR STRALING.
@ AEP, UK model
Aperture Label
4 685 843 02
2. Aperture Label
AVOID EXPOSURE
INVISIBLE LASER
RADIATION IS EMITTED
FROM THIS APERTURE.
4-908-404-01
Aadvarsel Mzerkning

CDP-502ES/620ES |
SAFETY
CHECK-OUT
(US
Model)
‘After
correcting
the
original
service
problem,
perform
the
following
safety
check
before
releasing
the
set
to
the
customer:
Check the antenna terminals, metal trim, “metallized”
knobs, screws, and all other exposed metal parts for
AC leakage. Check leakage as described below.
LEAKAGE TEST
The AC leakage from any exposed metal part to
earth
ground
and
from
all
exposed
metal
parts
to
any
exposed
metal
part
having
a
return
to
chassis,
must
not
exceed
0.5mA
(500
microampers).
Leakage
current
can
be
measured
by
any
one
of
three
methods.
1.
A
commercial
leakage
tester,
such
as
the
Simpson
229
or
RCA
WT-540A.
Follow
the
manufacturers’
instructions
to
use
these
instru-
ments.
2.
<A
battery-operated
AC
milliammeter.
The
Data
Precision
245
digital
mvuitimeter
is
suitable
for
this
job.
3.
Measuring
the
voltage
drop
across
a
resistor
by
means
of
a
VOM
or
battery-operated
AC
volt-
meter.
The
“limit”
indication
is
0.75
V,
so
analog
meters
must
have
an
accurate
low-
voltage
scale.
The
Simpson
250
and
Sanwa
SH-63Trd
are
examples
of
a
passive
VOM
that
is
suitable.
Nearly
all
battery
operated
digital
multimeters
that
have
a
2V
AC
range
are
suitable.
(See
Fig.
A)
To Exposed Metal
Parts on Set
AC
voltmeter
ia (0.75 V)
= Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.
FEATURES
With
the
CDP-502ES,
flat
frequency
response
(2
-
20,000
Hz),
low
wow
and
flutter
(lower
than
the
measurable
limit),
wide
dynamic
range
(more
than
96
dB),
minima!
distortion
(0.0025
%)
and
high
channel
separation
(more
than
95
dB)
are
achieved.
Quick operation
@Feather-touch
function
keys
for
direct
mode
change.
e@Linear
motor
for
quick
selection
search.
Multi-functional
eA
variety
of
playing
modes:
In
the
PROGRAM
mode
the
desired
selections
can
be
played
back
in
any
desired
se-
quence.
In
the
CONTINUE
mode
playback
is
continuous
from
the
desired
selection
to
the
end
of
the
disc.
In
the
SINGLE
mode
only
one
selection
is
played
back.
eThe
shuffle-play
function
plays
selections
back
in
ran-
dom
order.
e@The
AMS
(Automatic
Music
Sensor)
for
quick
selection
location
eThe
index
function
allows
you
to
locate
quickly
the
part
you
want.
eThe
repeat
function
allows.you
to
repeat
play
con-
tinuous
in
any
mode.
eThe
auto
delay
function
allows
you
to
delay
the
playback
of
the
first
selection
2
seconds.
@An
RM-D502
remote
commander
supplied.
eLarge
and
easy-to-read
music
calender
display
shows
the
selection
numbers
on
the
disc
and
the
time
counter
shows
the
elapsed
or
remaining
playing
time.

he
CDP-502ES/620ES
— CAUTION FOR ELECTROSTATIC BREAKDOWN —
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK (BU-1)
The laser diode in the optical pick-up block may 1. Place a conductive sheet on the workbench.
suffer electrostatic breakdown because of the poten- (The black sheet used as repair parts wrapping).
tial difference generated by the charged electrostatic 4. Place the set on the conductive sheet so that the
load, etc. on clothing and the human body.
The printed matter below is included in the repair
parts. During repair, use the procedure in the printed
chassis touches the sheet. (This makes it the same
potential as the conductive sheet).
3. Place your hands on the conductive sheet. (This
matter.
The following method is an example for reference makes them the same potential as the sheet).
purposes: 4. Remove the optical pick-up block.
5. Perfrom work on top of the conductive sheet. Be
careful that clothing does not touch the optical
pick-up block.
Printed Matter Included in the Repair Parts
When opening or repairing a BU-1, the procedure for grounding as follows is required to prevent damage caused
by static electricity.
1. Grounding for the human body.
Be sure to put on a wrist-strap for grounding (with impedance lower than 10°) whose other end is grounded
The strap works to drain away the static electricity built-up on the human body.
. Grounding for the work table.
Be sure to lay on the table a cunductive sheet (with impedance lower than 10°) such as sheet of copper
which is grounded.
. As static electricity built-up on clothes is not drained away, be careful not to let your clothes touch the BU-1.
@) Wrist-strap
for grounding
transit protective cap
The unit
BU-1
@) Conductive sheet

CDP-502ES /620ES
NOTE ON REPAIR
@
Are
reset
signals
applied
to
each
IC?
During
power
ON,
a
“L”’
signal
is
made
momenta-
:
rily
at
R999
and
C995
and
applied
to
the
RESET
pin
of
each
IC.
During
power
OFF,
a
“L”
signal
is
made
by
Q991.
e@
Are
clock
signals
applied
to
each
IC?
The
microcomputer
clocks
except
for
remote
con-
trol
are
made
at
IC352
(67.7376
MHz)
and
then
divided
into
(4)(16.9344
MHz)
and
output
from
pin
(3).
The clock signals from pin 3 are wave shaped at
1C351
and
applied
to
1C603
pin
(1).
Here
they
are
further
divided
into
two
and
8.4672
MHz
clocks
are
applied
to
IC601.
The
other
micro-
computers
use
the
4.2336
MHz
signal
(divided
at [C603 and output from pin ).
e@ Are the optical block and servo operating?
If
power
is
turned
on
when
a
disc
is
not
inserted,
the
laser
goes
up
and
down
three
times.
Correct
optical
block
and
servo
system
operation
can
be
checked
by
confirming
by
eye
that
the
laser
is
lit
up at this time.
NOTES
ON
LASER
DIODE
EMISSION
CHECK
The
laser
beam
on
this
model
is
concentrated
so
as
to
be
focused
on
the
disc
reflective
surface
by
the
objective
lens
in
the
optical
pick-up
block.
There-
_ fore, when checking the laser diode emission, observe,
from more than 30 cm away from the objective lens.
2} Confirm that laser beam is spread,
(3) Up and down motion of the
objective lens, (3 times)
optical pick-up
block
© Hold down optical
pick-up by a finger.

CDP-502ES/620ES ©
CDP-502ES/620ES
LOCATION AND FUNCTION OF CONTROLS
Front panel
Photo: CDP-502ES
@ Disc compartment
The disc compartment opens when the OPEN/CLOSE
key @ is pressed. The disc compartment can be closed
by pressing the front of it lightly, by pressing the
OPEN/CLOSE key again or by pressing the B® PLAY key
6.
@ OPENICLOSE key
The disc compartment opens when this key is pressed,
and closes when it is pressed again.
© REMOTE SENSOR and indicator
The signal transmitted by the supplied RM-D502 remote
commander is received here. The indicator blinks to in-
dicate that a function key on the remote commander has
been pressed.
@ Direct selection keys
The keys numbered ({1] - [20], [+ 10] and [0] are used to
select the desired selection directly by number. Except
during the PROGRAM mode (page 15), the selection will
begin to play when the numbered key is pressed.
© > PLAY key
Press to start disc play. The ® indicator will be lit up
during play.
@ i PAUSE key
Press to pause during play. The §4# indicator will light up.
To release the pause mode, press this key again. The #4
indicator will go off and play will resume.
@ AMS (Automatic Music Sensor) keys
The desired selection can be located by pressing one of
these keys during play or during pause. -
kg: Press once to go back to the beginning of the
selection being played. To go back to the previous
selection, press two times, and so on.
bp: Press once to skip ahead to the beginning of the
next selection. Press twice to skip to the following
selection, and so on.
© INDEX keys
Press one of these keys to search for a particular index
number (signals prerecorded on the disc, indicating divi-
sions within a selection), to start play from the desired
point within. a selection. The index numbers are
displayed in the display window.
«_: Press once to return to the previous index number.
—: Press once to skip to the next index number.
If the key is pressed during playback of a disc on which
no index numbers have been recorded, play will start
from the beginning of the current selection.
© CHECK key, CLEAR key
CHECK: This key is for checking: the order of the
programmed selections.
CLEAR: In order to clear the programmed selections
one by one, first display the selection number with
the CHECK key, then press this key. Also, press this
key to clear [+ 10]if it is pressed by mistake.
@ PLAY MODE keys
CONTINUE: Press this key to play continuously from
the first (or desired) to last selection, in order from
the lowest number.
SINGLE: Press to play one selection only.
PROGRAM: Press to program the desired selections in
the desired order continuously.
@ STOP (RESET) key
When this key is pressed during play, play will stop and
the player will stand by, waiting for your instructions. All
selection numbers are displayed in the display window
and the TRACK and the INDEX indicators show 7.
@ Manual search keys
These keys are used to search fora particular point. You
can monitor the sound while going in fast forward or fast
reverse during search: :
<4<q: Keep pressed to go backwards at high speed.
bp : Keep pressed to go forward at high speed.
—7J—
Photo: CDP-502ES
® POWER switch
@® TIMER switch
Using an optional timer, the player can be set to start
playing automatically at a particular time.
® HEADPHONES jack (stereo phone jack)
Accepts any stereo headphones equipped with a stereo
phone plug.
@® REPEAT key
Press to repeat play. There are five types of repeat play:
one selection, all selections, A — B , program and shuf-
fle repeat.
@® TIME (elapsed or remaining time) key
When this key is pressed during play, the time remaining
for this selection or the time remaining on the disc is
displayed.
® AUTO DELAY key
When this key is pressed, two seconds of blank space
are inserted before play of the first selection begins.
This function is cancelled by pressing the key again.
@® SHUFFLE PLAY key
Selections are shuffled and played in a random order
when this key is pressed. When all of the selections on
the disc have been played once, the shuffle play is
cancelled.
Display window

‘CDP-502ES/620ES CDP-502ES/620ES
@ LINE OUT/PHONE LEVEL control
This control adjusts the output levels for both the LINE
OUT VARIABLE jacks @ on the rear panel and the HEAD-
PHONES jack @® on the front panel. Output level in-
creases when it is turned to MAX. This control also turns
automatically when operated using the supplied remote
commander RM-D502.
@ DISC indicator
This indicator lights up when the disc compartment is
moving, when the disc compartment has closed with a
disc in place and during disc playing.
You can tell whether a disc is inserted or not even when
the disc compartment is closed by checking this in-
dicator.
@ TRACK indicator
When the disc is inserted using the OPEN/CLOSE key @
or by pressing on the front of the disc compartment @,
the number of selections on the disc is displayed for
several seconds. When play begins, the number of the
selection being played is displayed. When the ® key
@ is pressed continuously and you go past the end of
the last selection, 77is displayed.
If the <q key ® is kept pressed and you go past the
beginning of the first selection, _~is displayed.
® Time counter
When the disc is inserted and the disc compartment °
closed, the total time of all the selections on the disc is
displayed for several seconds. (When the m® PLAY key @
is used, this display does not appear.) When play begins,
the elapsed time the selection has been playing is
displayed.
When the TIME key ® is pressed, the time remaining un-
till the selection ends is displayed after a minus ‘‘—”
symbol. When this key is pressed again, the play time re-
maining is displayed after a minus symbol. The display
varies depending on the setting of the PLAY MODE key
@ and SHUFFLE PLAY key @®.
@ PGM indicator
This
indicator
lights
up
when
the
PLAY
MODE
PRO.
GRAM
key
@
is
pressed
in
stop
mode,
then
goes
out
after
the
disc
has
begun
to’play.
|
The
indicator
also
lights
up
when
the
programmed
selections
are
being
checked
even
during
play.
® INDEX indicator
This
displays
the
index
numbers
of
the
selection
being
played.
After
programming
but
before
play,
or
when
checking
the
programmed
selections,
the
INDEX
in-
dicator
displays
the
order
the
selection
currently
displayed
on
the
TRACK
indicator
@
was
programmed.
(At
this
time
the
red
PGM
indicator
@
lights
up.)
@
Music
calendar
display
window
.
When
a
disc
is
inserted
and
the
player
is
on
stand-by,
the
number
of
selections
on
the
disc
is
displayed.
For
a
disc
with
21
or
more
selections,
1
—
20
light
up,
as
well
as
the
OVER
indicator
@.
,
The
display
changes
according
to
the
mode
and
which
function
keys
are
pressed.
@ OVER indicator
This
indicator
lights
up
when
a
disc
with
more
than
21
selections is inserted.
—9Q—
@ LINE OUT jacks
This unit is equipped with two pairs of LINE OUT jacks.
The FIXED jacks have a constant output level and the
VARIABLE jacks output level can be changed with the
LINE OUT control @.
The VARIABLE jacks are convenient to use for matching
the playback sound levels of a tuner or other audio
equipment. and the CD player without having to adjust
the volume control of the amplifier.
The VARIABLE jacks output level can be also adjusted
_ with supplied remote commander.
@® PLAY MODE initializing switch
This switch performs the same function as the PLAY
MODE keys @ on the front panel. The setting of this
switch—CONTINUE, SINGLE -or PROGRAM—deter-
mines the mode when power is turned on, so set this
switch to the mode most often used. After the power is
turned on, change the mode with the PLAY MODE keys
@, as this switch does not work once the power is turn-
ed on.
@ ACCESSORY CONNECTOR
This connector can be used to connect an optional
equipment which will be available in the future.

CDP-502ES/620ES
SECTION 1
OUTLINE
CIRCUIT DESCRIPTION
1-1, OUTLINE 10101 1C601 1C603
CX20109 CX23035 CX23034
D/A
LINE OUT
OPTICAL
CON-
PICK-UP
DIGITAL
VERTER
BLOCK
FILTER
FILTER
AMP
1¢501
CX20108
uv
SERVO N KEY INPUT
TRACK { REMOTE CONTROL
JUMP INPUT
Above block diagram shows configuration of this
set. Master control IC (IC702) serves as the center of
all operation. Master control IC (IC702) assumes
interface between. man and machine like key input
and remote control input. Mechanical control IC
(IC701) assumes interface between master control IC
(IC702) and machine,
For example, if PLAY button is pressed from key
input, master control (IC702) gives mechanical con-
trol IC (1C701).a command to make PLAY mode.
When. this command is given, mechanical control IC
(IC701) works in routine operation to make PLAY
mode. It gives every kind of commands for ICS501,
601 and they are in PLAY mode.
Through [C501 and IC601 use common data bus,
they distinguish a command for IC501 or IC601 by
a higher rank 4 bit value of each command from
mechanical control IC (IC701).
Command for ICS01: higher rank 4 bit 0000-0011
(0-3 with sexadecimal number system) are used.
Command for IC601: higher rank 4 bit 1010-1110
(A-E with sexadecimal number system) are used.
IC501 controls servo (focus, tracking, sled) mainly.
IC601 checks EFM demodulation and CRC.

CDP-502ES/620ES
The illustration below shows flow chart of simple
operation after power is ON.
POWER ON
CONFIRM NO
THAT TOC WHEN SLED POSITION
IS READ. IS OUT-OF NORMAL ONE.
EACH IC RESET
INITIAL
SETTING
ta
YES
ae
YES
IS DISC
TABLE
CLOSED?
NO
CLOSE DISC
TABLE
RETURN AT THE
BEGINNING OF
THE SELECTION BY
100 TRACK JUMP.
IN CASE OF
OPPOSITE SIDE
DISC MAY RUN
AWAY.
DOES PLAY NO
LAMP GO ON?
MOVE SLED MOTOR
AND SET IT AT
INNERMOST
CIRCUMFERENCE.
PLAY
MAKE FOCUS
SEARCH AND
CHECK IF DISC
IS INSERTED.
MAKE STOP MODE.
iS THERE
REMOTE
CONTROL
INPUT?
1S DISC NO
INSERTED?
YES STOP MODE
TO EACH
MODE
ROTATE DISC
TO EACH
MODE
MOTOR
CONFIRM THAT
TOC IS READ.