Sony CDP-557ESD User manual

Compact disc player
System
Laser output
Frequency
response
Signal to noise
ratio
Harmonic
distortion
Wow and flutter . Below measurable limit
Channel
separation
Photo: CDP-557ESD
SPECIFICATIONS
less than 44.6 pW
* This output is the value measured at a
distance of 200 mm from the objective lens
surface on the Optical Pick-up Block.
CDP-557ESD:
2 Hz — 20 kHz
+0.5 dB
CDP-707ESD:
2 Hz — 20 kHz
+0.3 dB
More than 115 dB
Less than
0.0015%
More than 110 dB
Outputs
LINE OUT (FIXED)
(phono jacks) :
LINE OUT
(VARIABLE)
(phono jacks)
DIGITAL OUT
(COAXIAL)
(phono jacks)
DIGITAL OUT
(OPTICAL)
(optical output
connector)
HEADPHONES
(stereo phone jack)
CAUTION
US Model
Canadian Model
CDP-707ESD
AEP Made!
UK Model
E Model
COP-557ESD
Output level 2 V (at 50 kilohms)
Load impedance over 10 kilohms
Output impedance 200 ohms
Output level max. 2 V (at 50 kilohms)
Load impedance over 50 kilohms
Output
impedance
200 ohms —
5.1 kilohms
Output level 0.5 Vp-p (at 75 ohms)
Load impedance 75 ohms
Wave length 660 nm
Output level -18 dBm
Output level max. 28 mW
Load impedance 32 ohms
Use of controls or adjustments or performance
of procedures other than those specified herein
may result in hazardous radiation exposure.
COMPACT DISC PLAYER
ON
Y.

CDP-557ESD/707ESD
General
AEP Mocel!:
220 V AC (or 240 V AC adjustable by
Sony personnel), 50/60 Hz
Model for the United King
240 V AC (or 220 V AC adjustable by
Sony personnel), 50 Hz
US, Canadian Model:
(CDP-707ESD)
120 V AC, 60 Hz
Power — = | 22W
consumption | ee
Dimensions “| CDP-557ESD
(approx.) (UK Model)
Power
requirements
430 x 125 x 375
mm (wih/d)
(17 x5 x 145/s
inches)
CDP-707ESD/
CDP-557ESD
(AEP Model)
470 x 125 x 375
mm (w/h/d)
(185/a x 5 x 145/a
inches)
_| including projecting parts and controls
Weight (approx.) | CDP-557ESD
chp ity Se (UK Model)
17 kg (37 lbs
8 02)
CDP-707ESD/
CDP-557ESD
(AEP Model)
18 kg (39 Ibs
11 oz)
1
(2 phono plugs—2 phono plugs)
Supplied accessories
Audio signal
connecting cord
Remote
commander
Sony SUM-3 (NS)
batteries
Screw driver
SAFETY-RELATED COMPONENT WARNINGI!!
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.
Remote commander
Remote control
system
Infrared control
Power 3V DC with two R6 (size AA) batteries
requirements
Dimensions Approx. 62 x 20 x 168.5 mm (w/h/d)
(24/2 x 4/16 x 63/4 inches)
Approx. 130 g (5 02)
including batteries
Weight
MODEL IDENTIFICATION
— Specification Labels —
SONY:
COMPACT DISC PLAYER
LLL
MODEL NO,
SERIAL NO.
MADE .IN JAPAN
US, Canadian model: AC: 120 V~60Hz 22 W
AEP, E model: AC: 220 V ~ 50/60 Hz 22 W
UK model: AC: 240 V ~ 50/60 Hz 22 W
Features
Custom file function
* Disc memo function for writing a comment about a disc.
* Program bank function for storing a programmed playing
order.
* Custom index function for assigning your own index
point to any desired position on a disc.
Program play
You can play up to 20 selections in the desired order. Pause
can be also programmed. You can also confirm the total
playing time while choosing the selection to be
programmed. .
Variety of playing modes
Single play, program play, shuffle play and repeat play as
well as normal continuous play of a whole disc.
Large and easy-to-read window display
Shows the elapsed playing time, the remaining time of the
selection being played, the remaining time of the whole disc
or the remaining programmed selection numbers. The
display contains a music calendar indicating all the
numbers of the selections on the disc (up to 20).
ATTENTION AU COMPOSANT AYANT RAPPORT
A LA SECURITE!
LES COMPOSANTS IDENTIFIES PAR UNE TRAME ET
UNE MARQUE /\ 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. |

TABLE OF CONTENTS
Section Title Page
SPeCiiCatiONns. 434-6 wa et eat whe de ote A ]
Model Identification ................0.. 2
TGATULOS: 4,4: cn dove eed a os ied & Gene a hs 2
matety Check-OUT 25: fick 2 ae aka & Ske Bs 3
DELVICING NOK. 6 cin SS ee cule oe et PR eg 4
Location of Controls................... 5
EF DISASSEMBLY
Nut of Vplume Removal ............ 6
2. ELECTRICAL ADJUSTMENTS
Adjustment Mode................. 7
RF PLL Adjustment ............... e
Focus Bias Adjustment ............. 8
E-F Balance Adjustment ............ 8
Reference — Focus/Tracking Gain
Adjustment ............ 000000008 9
Distortion Adjustment.............. 10
= 3 DIAGRAMS
3-1. Optical Pcik-Up Block
Mounting Diagram ................ 11
3-2. IC Block Diagrams ................ 13
Dd~ WAVELOPINS: us oq. aiaes chee Ki Oe OE Se 16
3-4. Main Section Mounting Diagram ....... 18
3-5. Main Section Schematic Diagram ....... 23
3-6. Display Section Mounting Diagram ..... 28
3-7. Semiconductor Lead Layouts ......... 28
3-8. Display Section Schematic Diagram ..... 31
4. EXPLODED VIEWS AND
PAR TS: LISS: ota 244}. oad eas 33
5, ELECTRICAL PARTS LIST......... 40
Troubleshooting Guide ................. 48
CDP-557ESD/707ESD
SAFETY CHECK-OUT
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.
i)
A battery-operated AC milliammeter. The Data
Precision 245 digital multimeter 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
(0.75 V)
— Earth Ground
Using an AC voltmeter to check AC leakage.

CDP-557ESD/707ESD
SERVICING NOTES
~NOTES ON HANDLING THE OPTICAL PICK- NOTES ON LASER DIODE EMISSION CHECK
UP BLOCK OR BASE UNIT
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
more than 25 cm away from the objective lens,
The laser diode in the optical pick-up block may
suffer electrostatic breakdown because of the poten-
tial difference generated by the charged electrostatic
load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break- LASER DIODE AND FOCUS SERCH OPERA-
down and also use the procedure in the printed TION CHECK
matter which is included in the repair parts. 1. Remove disc pully by lifting up chucking arm by
The flexible board is easily damaged and should be hand, (Fig. A, B)
handled with care.
2. Make POWER switch on with no disc inserted and
disc table closed.
3. Confirm that the operation indicated in Fig. C is
ADVARSEL!! performed while observing the objecting lens.
Under service ma gjnene ikke komme ner objektiv-linsen
pa den optiske pick-up enhed. | tilfeelde af at det er : KY
ngdvendigt at kontrollere udsendelsen af laserlys, skal
det ske i en afstand af mere end 25cm fra den optiske
pick-up.
LASER
ADVARSEL
MARKNING
rig.
A
Remove
here
at first.
Felgende merkning findes indvendig i apparatet:
1. Advarsel Mzerkning
CAUTION ; INvisiBLE LASER RADIATION WHEN OPEN
AND INTERLOCKS DEFEATED. AVOID EXPOSURE TO BEAM.
ADVARSEL ~ usyntiG LASERSTRALING VED A®BNING
NAR SIKKERHEDSAFBRYDERE ER UDE AF FUNKTION UNDGA
UDSATTELSE FOR STRALING.
4 885 843 02
VAROITUS: Laite sisaltaa, laserdiodin, joka lahettaa
(nakymatonta) silmille vaarallista lasersateilya. Fig. B
Lift up chucking arm by hand in
the direction of arrow.
(1) Confirm that laser beam is spread.
(2)
Up
and
down
motion
of
the
objective
lens.
(3
times}
Fig. C

Note on the Transit Screw
Turn the unlt upside
down to turn the screw.
NS
Transit screw J
Before operating the CD player, be sure to turn
the transit screw as described on the label on
the bottom of the unit.
1 Remove the cap of the screw.
2 Turn the screw 180 degrees
counterclockwise using the supplied
screwdriver.
Do not turn the screw excessively, or the unit
may be damaged.
When transporting the unit again, turn the
transit screw in the reverse direction.
When You Use the CD Player
for the First Time
FILE
Illustration: CDP-707ESD
Tum on the power by pressing POWER while
keeping ERASE and FILE pressed.
This will clear the internal memory if you have
been instructed how to use the custom file
function at the shop you purchased the CD
player. Thus the player returns the same status
as it was manufactured at factory.
Mover-jt(e)a Me) Mmece)nyice) (am
Front Panel
>20 (over 20) button
4— —» INDEX button
REPEAT button
A. SPACE/PAUSE (auto space/auto pause)
button
DISPLAY button
Disc compartment
POWER switch
CDP-557ESD/707ESD
CHECK (program check) button
CLEAR (program clear) button
FILE (custom file) button
Numeric buttons
INDEX MODE button
PLAY MODE buttons
PROGRAM button
SHUFFLE button
Remote sensor
TIMER switch
(open/close) button
> (play) button
Display window
KI (pause) button
* AMS Is an abbreviation of Automatic Music Sensor.
CONTINUE/SINGLE
button
LEVEL control
| LINE OUTIHEADPHONE
HEADPHONES jack
ERASE (memory erase) button
<4 pp (manual search) buttons
Ké<@ me! (AMS*) buttons
@ (stop) button
Remote Commander
PLAY MODE buttons
PGM (program) button
SHUFFLE button
CONTINUE button
SINGLE button
(open/close) button
>20 (over 20) button
DISPLAY button
A <> B repeat button
CLEARIREPEAT (A <> B repeat
clear/repeat) button
> (play) button
Il (pause) button
g@ (stop) button
Numeric buttons
CLEAR (program clear) button
FILE (custom file) button
C. INDEX MODE (custom index mode)
button
<4 >> AMS buttons
om i. INDEX buttons
<4<4 p> (manual search) buttons
<< pp» SLOW (low speed manual search)
buttons
LINE OUT VOLUME (line out/fheadphone
volume) buttons

CDP-557ESD/707ESD
SECTION 1
DISASSEMBLY
NUT OF VOLUME REMOVAL
After loosen the nut by plier, rotating nut with
tweezers makes easy to remove it.
AC power cord
(1] LINE OUT (audio output) jacks
FIXED: Output the signal at the fixed level.
VARIABLE: Output the signal at the level set by the
LINE OUT/HEADPHONE LEVEL control.(or LINE OUT
VOLUME buttons on the remote commander).
[2] OUTPUT SELECTOR
Selects the output connectors to be used.
DIGITAL OUT: Digital signal is output through the
DIGITAL OUT jacks. No signal is output through the
LINE OUT jacks or the HEADPHONES jack.
LINE OUT: Audio signal is output through the LINE OUT
jacks or the HEADPHONES jack. No signal is output
through the DIGITAL OUT jacks. (Be sure to set to this
position when you listen to the music through the
headphones or the LINE OUT jacks.)
[3] DIGITAL OUT (digital audio output) jacks
Output the digital audio signals. ;
COAXIAL: To be connected to a digital input jack of
the amplifier or the D/A converter unit.
OPTICAL: To be connected to the amplifier having an
optical input jack.
Note: If the LINE OUT/HEADPHONE LEVEL control
is turned while recording through the VARIABLE LINE
OUT jacks, the level of the recorded sound will be dif-
ferent from that set by the recording level controls of the
tape deck.

CDP-557ESD/707ESD
SECTION 2
ELECTRICAL ADJUSTMENTS
2-1. ELECTRICAL ADJUSTMENTS
RF PLL Adjustment
1. Perform adjustments in the order given.
2. Use YEDS-18 disc unless otherwise indicated.
Procedure:
fri equency coun ter
digital board [
—— ee,
TP (PLCK) 0=———_O
TP (GND) o-——o
3. Use the oscilloscope with more than 10 MQQ im-
pedance.
1. Connect main board test point ASY and GND.
| Adjustment Mode
1. Connect digital board test point ADJ and GND.
This is to prevent the disc table from opening
2. Connect the frequency counter to main board test
points TP PLCK and TP GND.
3. Turn POWER switch ON (stop mode).
. Adjust digital board RV201 so that reading on
frequency counter is 4.3218 MHz +3 kHz.
even though pits are not read, by making micro-
computer [C301 pin 68) low.
2. Turn POWER switch on.
(To reset microcomputer.)
5. Reconnect lead wires connected in adjustment
mode.
. Put disc (YEDS-18) in and press ® PLAY button.
After adjustment, remove the lead wire connecting
test points ADJ and GND.
Adjustment Location: digital board : ; .
J pais a ai . Confirm that reading on frequency counter is
4.3218 MHz.
Adjustment Location: digital board
test point ADJ
(Connect the lead wire from
this test point to GND.)
TP
(PLCK)

CDP-557ESD/707ESD
Focus Bias Adjustment E-F Balance Adjustment
This adjustment should be made when replacing This adjustment should be made when replacing
Optical Pick-up. Optical Pick-up.
Procedure: Procedure:
oscilloscope . Connect oscilloscope to test points TE and GND.
(DC range) : :
. Put set into adjustment mode. (See page 7.)
digital board . Turn POWER switch on.
(mac EN.
TP (RF) . Put disc (YEDS-18) in and press ® button.
TP (GND) ¢ | 0 . Adjust RV101 so that the traverse waveform is
symmetrical above and below.
_ Connect oscilloscope to test points RF and GND. . After adjustment, cancel the adjustment mode.
(See page 7.)
. Put set into adjustment mode. (See page 7.)
. Turn POWER switch on.
. Put disc (YEDS-18) in and press > button.
. Adjust RV104 for an optimum waveform eye pat-
tern or so that the peak is maximum. Optimum
eye pattern means that shape “©” can be clearly VOLT/DIV: 1V
ae ; TIME/DIV: ims
distinguished at the center of the waveform. :
Adjustment Location: digital board
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RHA
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Adjustment Location: digital board
TP (GND) TP (RF)

Distortion Adjustment
This adjustment should be made only when
replacing D/A converter and components of the
—15 V system power supply block.
‘distortion meter
LINEOUT
. Put disc (YEDS-18) in and playback 1 kHz, 0 dB
signal track (second track).
. Adjust the following volumes in order given by
atrows so that the distortion is minimum.
L-CH: RV404 > RV403 > RV401 > RV402
R-CH: RV504 > RV503 > RV501 > RV502
. Confirm the specification is satisfied. When out of
specification, repeat item 2 and 3 several times.
Specification: 0.003% and below
Adjustment Location: main board
RV501 RV502 RV403 RV402
Oo O Oo O
0 oO 90 9
RV504 RV503 RV404 RV401
CDP-557ESD/707ESD
CDP-557ESD/707ESD
REFERENCE
Focus/Tracking Gain Adjustment
A frequency responce analyzer is necessary in
order to perform this adjustment exactly.
However, this gain has a margin, so even if it is
slightly off, there is no problem. Therefore, do not
perform this adjustment.
Focus/tracking
gain
determines
the
pick-up
follow-
up
(vertical
and
horizontal)
relative
to
mechanical
noise
and
mechanical
shock
when
the
2-axis
device
operate.
However,
as
these
reciprocate,
the
adjustment
is
at
the
point
where
both
are
satisfied.
@
When
gain
is
raised,
the
noise
when
the
2-axis
device
operates
increases.
@ When gain is lowered, mechanical shock and
skipping occurs more easily.
@
When
gain
adjustment
is
off,
the
symptoms
below
appear.
Tracking
e The time until music starts
becomes longer for STOP
> DPLAY or automatic
selection (Ke4, PPI buttons
pressed.) (Normally takes
about 1 seconds.)
e Music does not start and
disc continues to rotate
for STOP >PPLAY or
= _
automatic selection. (h4
PPI buttons pressed.)
e Disc table opens shortly high
after STOP>DPLAY.
e Sound is interrupted dur-
ing PLAY. Or time count-
er aed stops progress-
e
More
noise
during
2-axis
high
high
device
operation.
The following is a simple adjustment method.
— Primary Adjustment —
Note: Since exact adjustment cannot be performed, remem-
ber the positions of the controls before performing the
adjustment. If the positions after the primary adjust-
ment are only a little different, return the controls to
the
original
position.
oscilloscope
(DC
range)
Procedure:
digital
board
[enti
TP
FE
OO
HH
ee
TP
TEOm-
-
1. Keep the set horizontal.
If
the
set
is
not
horizontal,
this
adjustment
cannot
be
performed
due
to
the
gravity
against
the 2 axis device.
2. Put set in adjustment mode. (See page 7.)
3. Insert disc (YEDS-1) and press ® PLAY button.
4. Connect oscilloscope to servo board TP FE.
5.
Adjustment
RV103
so
that
the
waveform
is
as
shown
in
the
figure
below.
(focus
gain
adjustment)
VOLT/DIV: 100mV
f TIME/DIV: 2mS
@ Incorrent Examples (DC level changes more than
on adjusted waveform)
low focus gain
VOLT/DIV: 100mvV
TIME/DIV: 2mS
—OV
high
focus
gain
VOLT/DIV:
100
mV
y TIME/DIV: 2mS
6. Connect oscilloscope to main board TP TE.
7. Adjust RV102 so that the waveform is as shown in
the figure below. (tracking gain adjustment)
VOLT/DIV: 1V
TIME/DIV: 2mS
OV
@ Incorrect Examples (fundamental wave appears)
low tracking gain
VOLT/DIV: 1V
TIME/DIV: 2mS
— OV
high tracking gain
(higher fundamental wave than for low gain)
VOLT/DIV: 1V
TIME/DIV: 2mS
—— OV
Adjustment Location: digital board
A oof
Oo
RV103 \ (re)
RV102
(FE)

CDP-557ESD/707ESD
CDP-557ESD/707ESD
3-1. OPTICAL PICK-UP BLOCK MOUNTING DIAGRAM
c
Snnstrsmenmariosien
-«
FE
-—1
|
2
fs
fa
Ts
J
ey
7
fs
{3
|
»
@ See page 18 for notes.
DISC MOTOR
e SEMICONDUCTOR A
LOCATION
B
FINISH
c START TO ROTATE
TO DIGITAL BOARD @
D (OPTICAL PICK-UP BLOCK)
ey
E [FLEXIBLE BOARD(I/2)] { ,-~seee2},
tf gow 03
LZ [FLEXIBLE BOARD(I/2)] . x Eee, :
Se fp eae |
= a — : rae TO MD RELAY BOARD
MSI
Siemon
:
om
old
SENSOR
COIL
O15
O16
O17
ol8
\9
020)
G
IN SW board |
C MOTOR board
L/C SW board
\
BSL MOTOR board OUT SW board
aL
l=
a
=