Sony CDP-227ESD User manual

SERVICE MANUAL
photo: CDP-507ESD
MICROFILM
LINE OUT (FIXED)
(phono jacks)
Output level 2 V (at 50 kilohms)
Load impedance over 10 kilohms
LINE OUT Output level max. 2 V (at 50 kilohms)
(VARIABLE) Load impedance over 50 kilohms
(phono jacks)
DIGITAL OUT Output level 0.5 Vp-p (at 75 ohins)
(COAXIAL) Load impedance 75 ohms |
(phono jacks)
i
DIGITAL OUT Wave length
(OPTICAL) 660 nm
(optical output Output level
‘connector -—18 dBm
HEADPHONES Output level max.
(stereo phone jack) | 28 mW
Load impedance 32 ohms
AEP
UK
US
Canadian
E
Model
Model
CDP-227ESD
Model
Model
Model
CDP-507ESD
Weight (approx.)
SPECIFICATIONS
Compact disc player General
System Compact disc digital audio system Power AEP model
Laser
Semiconductor
laser
(A
=
780
nm)
requirements
(CDP-227ESD)
A
220 V AC{or 240 V AC adjustable by
Emission
duration
|
Continuous
Sony
personnel),
50/60
Hz
Laser output Max. 44.6 uw UK model
* This output is the value measured at a (CDP-227ESD)
distance of 200 mm from the objective lens 240 V AC(lor 220 V AC adjustable by
surface on the Optical Pick-up Block. Sony personnel), 50/60 Hz
Frequency nS US, Canadian model
response eee coe 08 (CDP-507ESD)
R ; 120 V AC, 60Hz
ae eg Stee More than 106 dB E model
: (CDP-507ESD)
Dynamic range More than 96 dB 110, 120, 220 or 240 V AC adjustable,
Harmonic Less than 50/60 Hz
distortion
0.0025%
Power
“sith
Wow and flutter Below measurable limit consumption
Channel More than 100dB Dimensions 430 x 110 x 345 mm
separation
(approx.)
(wihid)
(17 x 43/e x 13/8
inches)
Outputs including projecting parts and controls
6.3kg (13lbs 1502)
Supplied accessories
Audio signal
connecting cord
1
(2 phono piugs—2 phono plugs)
Remote
commander
1
Sony SUM-3 (NS)
batteries
Screw driver
al
— Continued on page 2—
COMPACT DISC PLAYER
SONY.

CDP-227ESD/507ESD
Remote commander Optional accessory
5 Optical cable POC-15
Remote control Infrared control
system
Power 3V DC with two R6 (size AA) batteries
requirements
Dimensions Approx. 62 x 20 x 168.5 mm (wih/d)
(242 x Bis x 64/4 inches)
—
Weight Approx. 130 g (5 02) Note
This appliance conforms with EEC Directives 76/889 and 82/499
regarding interference suppression.
including batteries
Features
Variety of playing modes
* Disc memo function for writing a comment about a disc. Single play, program play, shuffle play and repeat
* Program bank function for storing a programmed playing play as well as normal continuous play of a whole
order. disc.
* Custom index function for assigning your own index
point to any desired position on a disc.
Custom file function
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
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.
Operating Voltage
Before
connecting
the
unit
to
the
power
source,
check
that
the
operating
voltage
of
your
unit is
the
same
as
the
local
power
line voltage.
Model Where purchased Operating voltage
4
ve
AEP
model
Operates
on
220V
AC
(or
240V
AC
adjustable
by
authorized
Sony
! personnel), 50/60Hz
4
[
UK
model
Operates
on
240V
AC
(or
220V
AC
adjustable
by
authorized
Sony
personnel), 50/60 Hz
Operates on 120V AC, 60Hz
I |
; Canada model
i
}
E modet Operates on either 110, 120, 220 or 240V AC, 50/60Hz.
The voltage selector is located on the rear panel. If the selector must
be reset, disconnect the AC power cord and turn the selector with
a coin or a similar object so that the arrow mark of the selector
points to the proper voltage figure.
ATTENTION AU COMPOSANT AYANT RAPPORT
A LA SECURITE!
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS
IDENTIFIED
BY
MARK
A
OR
DOTTED
LINE
WITH
MARK
/\
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
PUB-
LISHED
BY
SONY.
LES COMPOSANTS IDENTIFIES PAR UNE MARQUE /\
SUR LES DIAGRAMMES SCHEMATIQUES ET LA LISTE
DES PIECES SONT CRITIQUES POUR LA SECURITE
DE FONCTIONNEMENT. NE REMPLACER CES COM-
POSANTS 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 Hage.
Specifications 2... sc. Sen bb oe bore See ees 1
Features: (coc eects Fetes aL Se LOG eee ho 2
Operating Voltage .......... 0... 0.00022 eee 2
Safety Check-out .... 0... 0.2... 0.0.00 ee eae 3
Model Identification ..............2.000008- 3
SECTION 1. GENERAL
Protection of Eyes from Laser Beam During
SERVICING: 34 58S. D tye ale Bisinae! oy Raat aeetae eee 4
Location and Function of Controls ............ 5
Servicing Note .... 0.0.0.2... eee ee ee ee 6
SECTION 2. ADJUSTMENTS .............-- 7
SECTION 3. DIAGRAMS
3-1. IC Block Diagrams.................- 10
3-2. Block Diagram................--055 11
3-3. Printed Wiring Boards (Display Section). . 13
3-4, Semiconductor Lead Layouts ......... 13
3-5.
Schematic
Diagram
(Display
Section)
...
15
3-6. Waveforms ......... 0.0 cee eee ee eee 19
3-7.
Printed
Wiring
Boards
(Main
Section)
...
20
3-8.
Schematic
Diagram
(Main
Section
1/2)
..
23
3-9.
Schematic
Dlagram
(Main
Section
2/2)
..
26
SECTION 4. EXPLODED VIEWS ............ 29
SECTION
5.
ELECTRICAL
PARTS
LIST......
34
MODEL IDENTIFICATION
— Specification Label —
CDP-227ESD (AEP, UK model)
CDP-507ESD (US, Canadian, E model)
SONY: won nGHy
COMPACT DISC PLAYER
MMMM
SERIAL NO.
MADE IN JAPAN
CDP-227ESD
AEP, UK model: AC 220—240V 50/60 Hz
CDP-507ESD
US, Canadian model: AC 120V 60Hz 20W
E model: AC 110, 120, 220—240V 50/60 Hz
20W
20W
CDP-227ESD/507ESD
CDP-507ESD:
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 0.5 mA (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 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 2 V AC range are
suitable. (See Fig. A)
To Exposed Metal
Parts on Set
|
AC
voltmeter
(0.75 V)
0.15uF if S 1,5kQ
= Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.

CDP-227ESD/507ESD
PROTECTION OF EYES FROM LASER BEAM DURING SERVICING
This set employs a laser. Therefore, be sure to fol- 1. Laser Diode Properties
low carefully the instructions below when servicing. @ Material: GaAlAs
@ Wavelength: 780 nm
@ Emission Duration: continuous
@ Laser Output: max. 44.6 uW*
CAUTION : ;
* This output is the value measured at a distance of
Use of controls or adjustments or performance about 200 mm from the objective lens surface on
of
procedures
other
than
those
specified
herein
the
Optical
Pick-up
Block.
may
result
in
hazardous
radiation
exposure.
2. During service, do not take the Optical Pick-up
Block apart, and do not adjust the APC circuit.
If there is a breakdown inthe APC circuit (includ-
ing laser diode), replace the entire Optiocal Pick-
up Block (including APC borad).
eae anette te tie a
Pn ee ee ee ee ee ee
BESKYTTELSE AF O@JNE MOD LASERSTRALING UNDER SERVICE
I dette apparat anvendes laserlys. Derfor skal 1. Laser-didoe data
nedenstaende instruktioner noje felges under service. @ Materiale: GaAlAs
@ Belgelengde: 780 nm
Folg iovrigt instruktionerne i servicemanualen. @ Udstraling: Kontinuerlig
@ Laseroutput: Max. 0,4 mW*
* Malt i 1,6 mm afstand fra overfladen af objektiv-
ADVARSEL!!
linsen
pa
den
optiske
pick-up
enhed.
Under service ma g@jnene ikke komme ner objektiv-linsen
pa den optiske pick-up enhed. | tilfzelde af at det er
ngdvendigt at kontrollere udsendelsen af laserlys, skal
det ske i en afstand af mere end 25cm fra den optiske
pick-up.
@ Klassifikation: Klasse Ib.
2. Adskil aldrig den optiske pick-up enhed under
service, og juster ikke APC kredslebet (Automatic
Power Control). Hvis APC kredslebet (incl. laser-
dioden) bryder ned, skal hele den optiske pick-up
enhed (incl. APC printkortet) udskiftes.
LASER ADVARSEL MARKNING
Foelgende mzerkning findes indvendig i apparatet:
1. Advarsel Mzerkning
CAUTION < INvisiBLE LASER RADIATION WHEN OPEN
ANO INTERLOCKS DEFEATED, AVOID EXPOSURE TO BEAM
ADVARSEL «| usyNuiG LASERSTRALING VED ABNING
NAR SIKKEAHEDSAFBAYDERE ER UDE AF FUNKTION UNDGA
UDSATTELSE FOR STRALING
VAROITUS: Laite sisaltaa, laserdiodin, joka lahettaa
(nakymatonta) silmille vaarallista lasersateilya.

CDP-227ESD/507ESD
SECTION 1
GENERAL
LOCATION AND FUNCTION OF CONTROLS
Front Panel CDP-227ESD/CDP-507ESD
CHECK (program check) button CLEAR (program clear) button
>20 (over 20) button FILE (custom file) button
4m = INDEX button Numeric buttons
Display window INDEX MODE button
REPEAT button PLAY MODE buttons
PROGRAM button
SHUFFLE button
A SPACE/PAUSE (auto space/pause) CONTINUEISINGLE button
button
DISPLAY button LINE OUT/HEADPHONE LEVEL
controt
POWER switch HEADPHONES jack
Remote sensor ERASE (memory erase) button
TIMER switch <4 bP (manual search) buttons
Disc compartment kd BP (AMS~) buttons
@ (openiclose) button @ (stop) button
& (play) button Il (Pause) button
* AMS is an abbreviation of Automatic Music Sensor.
Remote Commander
PLAY MODE buttons ——~— Numeric buttons
PGM (program) button
SHUFFLE button
CONTINUE button CLEAR (program clean button
SINGLE button
FILE (custom file) button
(openiclose) button
C. INDEX MODE (custom index mode)
button
ke PR AMS buttons
>20 (over 20) button
DISPLAY button
A
<—
B
repeat
button
4m =»
INDEX
buttons
CLEAR/REPEAT (A -— B repeat clear!
repeat) button << BP (manual search) buttons
> (play) button
<< pe SLOW (low speed manual
1
(pause)
button
search)
buttons
@ (stop) button LINE OUT VOLUME (line outfheadphone
volume) buttons

CDP-227ESD/507ESD
—SERVICING NOTE —
MANUAL
OPENING
OF
DISCTABLE
@
How
to
open
the
disctable
manually.
Insert a screwdriver(+) into the B hole on the bottom
plate
as
shown
in
the
figure
and
turn
the
loading
pully
shaft
counter-clockwise,
then
the
disctable
will
push out slowly.
Caution on closing the disctable.
The disctable cannot be stored thoroughly in the
cabinet, when the optical block is under a chucking
state. To recover from the chucking state, turn the
driver through the B_ hole gradually and close the
disctable.
REMOVAL OF DISCTABLE
How to remove the disctable.
y Pull out the disctable fully. Press the stoppers down
with a precision driver to release the disctable from
them and remove it.
NOTES
ON
HANDLING
THE
OPTICAL
PICK-
UP
BLOCK
OR
BASE
UNIT
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-
down
and
also
use
the
procedure
in
the
printed
matter
which
is
included
in
the
repair
parts.
The
flexible
board
is
easily
damaged
and
should
be
handled
with
care.
— §—-

SECTION 2
CDP-227ESD/507ESD
ADJUSTMENTS
ELECTRICAL ADJUSTMENTS
1.
Perform
adjustments
in
the
order
given.
2. Use YEDS-18 (8-702-101-01) disc unless otherwise
indicated.
3.
Use
the
oscilloscope
with
more
than
10
MQ
im-
pedance.
Adjustment Mode
1. Connect main board test point ADJ and GND.
This is to prevent the disc table from opening
(cre though pits are not read, by making micro)
computer IC301 pin @) low.
2. Turn POWER switch on.
(To reset microcomputer.)
After
adjustment,
remove
the
lead
wire
connecting
test points ADJ and GND.
Adjustment Location: main board
‘CDP-227ESD/507ESD
Focus Bias Adjustment
This adjustment should be made when replacing
optical pick-up.
Procedure:
oscilloscope
(DC range)
digital board
oo
TP (RF)
o———o
TP (RFG)
1. Connect oscilloscope to test points RF and RFG.
. Put set into adjustment mode.
. Turn POWER switch on.
. Put disc (YEDS-18) in and press » button.
nA & W NY
. Adjust RV104 for an optimum waveform eye pat-
tern or so that the peak is maximum. Optimum
eye pattern means that shape ‘‘O” can be clearly
distinguished at the center of the waveform.
Adjustment Location: main board
$$
RF PLL Adjustment
Procedure:
frequency counter
digital board fee = oy
TP (PLCK) ot ae
TP (GND)
1. Connect main board test point ASY and GND.
2. Connect the frequency counter to main board test
points TP PLCK and TP GND.
3. Turn POWER switch ON (stop mode).
4. Adjust main board RV201 so that reading on
frequency counter is 4.3218 MHz +3 kHz.
5. Reconnect lead wires connected in adjustment
mode.
6. Put disc (YEDS-18) in and press » PLAY button.
7. Confirm that reading on frequency counter is
4.3218 MHz.
Adjustment Location: main board
4
-)
E-F Balance Adjustment
This adjustment should be made when replacing
optical pick-up.
Procedure:
. Put set into adjustment mode.
. Connect TP(TES) to ground.
. Turn POWER switch on.
. Put disc (YEDS-18) in and press » button.
an wn
. Adjust RV101 so that the traverse waveform is
symmetrical above and below.
7. After adjustment, cancel the adjustment mode.
VOLT/DIV: 1V
TIME/DIV: Ims
. Cnnnect oscilloscope to test points TEO and GND.
Focus/Tracking Gain Adjustment
A frequency response 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, it is more susceptible to
mechanical shock and skipping occurs more easily.
@ When gain adjustment is off, the symptoms below
appear.
e The time until music starts
becomes longer for STOP
—> PPLAY or automatic
selection (K€ PPI buttons
pressed. (Normally takes
about 2 seconds.)
low or high
e Music does not start and
disc continues to rotate
for STOP >PPLAY or
automatic selection (#44
bPt buttons pressed.)
® Disc table opens shortly
after STOP >PPLAY.
low or high
e Sound is interrupted dur-
ing PLAY. Or time count-
er display stops progress-
ing.
e More poise during 2-axis
device operation.
6. Connect oscillo
7. Adjust RV304
the figure belo
The following is a simple adjustment method.
— Simple Adjustment —
Note: Since exact adjustment cannot be performed, remem-
ber the positions of the controls before performing the
adjustment. If the positions after the simple adjust-
ment are only a little different, return the controls to
the original position.
oscilloscope
(DC range)
Procedure:
main board
—_—
TP TEO O——7————O +
! | 7 ® Incorrect Exa
|
TP FEOQ- -7 lo
1. Keep the set horizontal.
If the set is not horizontal, this adjustment
(cannot be performed due to the gravity saint)
the 2 axis device.
2. Put set in adjustment mode.
3. Insert disc (YEDS-1) and press » PLAY button.
4. Connect oscilloscope servo board TP FEO. high tracking ga
5. Adjustment RV203 so that the waveform is as (higher funders
shown in the figure below. (focus gain adjustment)
VOLT/DIV: 100mV
TIME/DIV: 2mS
—-100mvVv
—ov
@ Incorrent Examples (DC level changes more than
i Adjustment Loca
on adjusted waveform)
low focus gain
VOLT/DIV: 100mVv
TIME/DIV: 2mS
—OoOv
high
focus
gain
VOLT/DIV:
100
TIME/DIV: 2mS

Ge ee ce
1D/507ESD
CDP-227ESD/507ESD
Focus/Tracking Gain Adjustment
A frequency response 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, it is more susceptible to
mechanical shock and skipping occurs more easily.
@ When gain adjustment is off, the symptoms below
appear.
e The time until music starts
becomes longer for STOP
> DPLAY or automatic
selection (Ké4, >P>t buttons
pressed. (Normally takes
about 2 seconds.)
low or high
@ Music does not start and
disc continues to rotate
for STOP>PPLAY or
automatic selection (K¢@
bP buttons pressed.)
Jt
e Disc table opens shortly
after STOP>DPPLAY.
low or high
e Sound is interrupted dur-
ing PLAY. Or time count-
er display stops progress-
* ing.
e More poise during 2-axis
device operation.
The following is a simple adjustment method.
— Simple Adjustment —
Note: Since exact adjustment cannot be performed, remem-
ber the positions of the controls before performing the
adjustment. If the positions after the simple adjust-
ment are only a little different, return the controls to
the original position.
oscilloscope
Procedure: ae a
main board &
—_—_—
TP TEO cor ae 1 +
|
TP FEOQ- -7
1. Keep the set horizontal.
If the set is not horizontal, this adjustment
(cannot be performed due to the gravity saint)
the 2 axis device.
. Put set in adjustment mode.
. Insert disc (YEDS-1) and press » PLAY button.
. Connect oscilloscope servo board TP FEO.
mi WwW bh . Adjustment RV203 so that the waveform is as
shown in the figure below. (focus gain adjustment)
TIME/DIV: 2mS
—100mvV
—oOov
@ Incorrent Examples (DC level changes more than
on adjusted waveform)
low focus gain
—OVv
high
focus
gain
VOLT/DIV:
100
TIME/OIV: 2mS
VOLT/DIV: 100mVv
VOLT/DIV: 100mV
TIME/OIV: 2mS
6. Connect oscilloscope to main board TP TEO.
7. Adjust RV304 so that the waveform is as shown in
the figure below. (tracking gain adjustment)
VOLT/DIV: TV
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: 1Vv
TIME/OIV: 2mS
—oOov
Adjustment Location: main board
Adjustment Location: main board
[MAIN BOARD]
CDP-227ESD/507ESD
—mounted side —
IRFCI® STe03
(RF}
e
(ADJ)
lasyYie @Rv201 RF PLL
1C204
@(TES)
RV102 TRACKING GAIN
(GNDJ@
[®RV103 FOCUS GAIN
(TEO)@
(FEO) @ @RV104 FOCUS BiAS
1C204
RV101 EF BALANCE

CDP-227ESD/507ESD
3-1. 1©C BLOCK DIAGRAMS
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7
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—13—
—14—