Sony D-555 User manual

US Model
Canadian Model
D-555
AEP Model
UK Model
E Model
D-Z555
Model Name Using Similar Mechanism
CD Mechanism Name CDM — 555
SPECIFICATIONS
CD section General
System _ Compact disc digital audio system Power requirements Supplied rechargeable battery pack (BP-2EX) or BP-100 (optional)
Laser diode properties Material: GaAlAs DC IN 9 V jack accepts:
Wavelength: 780 nm Supplied AC power adaptor for use on 120V AC, 60 Hz
Emission duration: Continuous Sony CPM-200P car mount plate (optional) or
Laser output: Less than 44.6 1W Sony DCC-120A car battery cord (optional) for use on
This output is the value measured at a distance 12 V car battery
of 200 mm from the objective lens surface on Power consumption 3.2 W DC
the Optical Pick-up Block, Dimension Approx. 127.6 x 33 x 145 mm (5 x 15/16 x 5"/16 inches) (w/h/d)
Error correction Sony Super Strategy Cross interleave Reed Solomon Code not incl. inclined part (depth), projecting parts and controls
D-A conversion 16-bit linear, 8fs digital filter Approx. 130 x 33.8 x 145.5 mm (5's x 15/6 x 5'/ie inches)
Frequency response 20 ~ 20,000 Hz +1 dB* (w/h/d) incl. projecting parts and controls
eames ratio Morethan90dB Weight Approx. 520g (1.2Ib) not incl. rechargeable battery
: ow and flutter Below measurable limit Approx. 600g (1.5ib) incl. rechargeable battery (BP-2EX)
utputs (at 9 V input level) a Supplied accessories AC power adaptor (1)
Line output (stereo minijack) Rechargeable battery pack (1)
Output level 0.7 V rms at 50 kilohms ; Carrying case (1)
Load impedance over 10 kilohms Cc ti d (1) (st iniplug - |
Optical
digital
output
(optical
output
connector)
onnecting
cord
(1)
(stereo
miniplug
-
two
phono
plugs)
Output level: ~21 — ~15 dBm Design and specifications subject to change without notice.
Wavelength: 630 — 690 nm at peak level
Headphones (stereo minijack)
9 mW + 9 MW at 32 ohms
Notes on AC power adaptor
* Measured by EIAJ CP-307 « Disconnect the AC power adaptor when the unit will
not be used.
e Use only the supplied AC power adaptor or the
recommended car battery cord manufactured by
Sony. Polarity of the plugs of other manufacturers
CAUTION
may
be
different,
Polarity
of
the
Sony
plug
The
use
of
optical
instruments
with
this
product
will
increase
eye
hazard.
CAUTION
Use of controls or adjustments or performance
For the Customers in the United Kingdom and European Countries
This Compact Disc player is classified as a
CLASS
1
os
‘
[eee
RORUGE
CLASS
1
LASER
product.
The
CLASS
1
LASER
of
procedures
other
than
those
specified
herein
PRODUCT label is located on the bottom may result in hazardous radiation exposure.
exterior.
LASER KLASSE 1

D-555/Z555 |
TABLE OF CONTENTS
Section Title Page Section Title Page
Specifications Cees eee ee ee eee ee ee ee ee ee ee ee 1 3. ELECTRICAL ADJUSTMENTS <-cccccc esc cctceeseeee 6
1. GENERAL 4. DIAGRAMS
Location and Fanction of Controls:::::+reeeres y) 4-1, Waveforms :s:seeseeersecce ee eeseseseesceeees 12
4-2. Block Diagram: +ssstcs etter erect eect n eens 13
2. SERVICING NOTES 4-3, Printed Wiring Boards—-Main Section—---- 16
Notes on Handing the Optical Pick-up Block:- 3 4-4, Schematic Diagram—Main Section—-:-::::- 21
Flexible Circuit Board Reparing:-+-+++++++++++++- 3 4-5. Schematic Diagram—Servo Section—-:---:> 24
Notes on Chip Component Replacement::++++++: 3 4-6. Printed Wiring Boards—Servo Section— -:+ 27
Before Replacing the Optical Block «++++++++++s: 3 4-7. IC Block Diagram corssssr teeter terse eeeees 31
Notes on Laser Diode Emission Check::::::-+:: 4
Laser Diode Check Procedure «++++serereteeeeees 4 5. EXPLODED VIEWS -cccce reer cee c eter reer eee eeees 33
Service Mode (service program) :-++++++++eeeeeee 5
6. ELECTRICAL PARTS LIST -+scssssre errr reeeeeees 37
SECTION 1
Location and Function of Controls
OPEN button
HOLD switch Hts
(stereo minijack)
Front display window
Normally displays the track button
number and the elapsed
playing time. When the power
is supplied through the PLAY MODE (playing mode select)
DC IN 9V jack the window button eens
will light up. **
ENTER/REMAIN button
“AMS is the abbreviation of Automatic Music Sensor.
ke / Bi (AMS*/ SEARCH/INDEX) buttons
@ (stop) button
® Hl (play/ pause) button
PHONES (headphones)
KEY MODE (locating mode select)
GENERAL
EFFECT
(sound
effect
control)
button
EQ
(graphic
equalizer
band select button)
VOLUME control buttons
Adjusts the sound from the PHONES
jack.
EFFECT MODE (sound
effect mode select)
button
REMOTE jack
LINE OUT jack
jack (stereo minijack)
DC IN SV (external power
! : OPTICAL DIGITAL OUT
input) jack
connector
Upper display window
Normally displays the level of the volume
and the left (L) ~and right (R) - channel.
When the power is supplied through the
DC IN 9V jack the window will light up.
é “ff lit for a long time, the unit may become warm, but that is not a problem.
me

| D-555/Z555
SECTION 2
SERVICING NOTES
NOTES ON HANDLING THE OPTICAL PICK-
UP BLOCK
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
Before Replacing the Optical Block
Please be sure to check thoroughly the parameters
as par the “Optical Block Checking Procedures”
(Part No.: 9-960-027-11) issued separately before
replacing the optical block.
Note and specifications required to check are given
below.
© FOK output: IC501 (9) pin
When checking FOK, remove the lead wire to disc
motor and unsolder and open IC801 pin.
@ Scarve P-to-P value: 2.95 Vp-p
matter which is included in the repair parts.
e Adjusted part for focus gain adjustment: RV505
Flexible Circuit Board Repairing @ RF signal P-to-P value: 0.75 — 1.4 Vp-p
1. Keep the temperature of the soldering iron at ¢ Traverse signal P-to-P value: 1.8 Vp-p
270° + 10°C during repairing. @ The grating holder can not repair.
2. Do not touch the soldering iron more than 4 e
seconds or 3 times on the same conductor of
the circuit board.
Adjusted part for tracking gain adjustment: RVS0O1
3. Do not apply force on the conductor when
soldering or unsoldering.
Notes on chip component replacement
@ Never reuse a disconnected chip component.
@ Notice that the minus side of a tantalum capacitor
may be damaged by heat.
ATTENTION AU COMPOSANT AYANT RAPPORT
A LA SECURITE!
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK A OR DOTTED
LINE WITH 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 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.

_D-555/Z555 |
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 objec-
tive lens in the optical pick-up block. Therefore,
when checking the laser diode emission, observe,
from more than 30 cm away from the objective lens.
Laser Diode Check Procedure
The laser diode on this set will not emit unless the
top panel is closed and S901 (leaf SW type) is turned
on. The laser diode will always emit even if focus
search is not performed in service mode.
The laser diode is checked using the current value
which flows to the laser diode inside the UPF.
Procedure | (service mode or normal operation)
Check the laser diode emission with the eye.
1. Open upper panel,
2. S901 on as Fig. 1.
(In service mode, this operation is not neces-
sary.)
3. Pressthe P&l key.
(In service mode, this operation is not neces-
sary.)
4. Observe the objective lens and confirm that
the laser diode is emitting light. At this time,
the laser diode goes on about 10 seconds due
to focus serarch. If it does not, APC circuit
or UPF is defective.
$90!
Fig. 1 Turning S907 on
Procedrue 2 (service mode or normal operation)
Check by the curent with flows in the laser diode,
1. Close the top panel,
2. Remove the main board and read the current
value on the label affixed to the UPF.
(Label on UPF)
KSS-167B
JAPAN
S 123 current value
- This means 49.9 mA.
The current value varies with the set.
3. Connect a VOM as shown in Fig. 2.
4. Press the DE key.
5. Calculate the current by the VOM reading.
VOM reading (V) + 10 = current (A)
ex. VOM reading = 0.49 V
0.49 + 10 = 0.049 (A) = 49 (mA)
6. Confirm that the ammeter reading is within
the range given below.
value on label+$, mA (25°C)
variation relative to temperature:
0.4 mA/°C
(Current increases when temperature rises
and decreases when it drops.)
If the value is more than the range given,
APC circuit has been defective or the laser
diode has deteriorated. If it is less, APC
circuit or UPF is defective.
—~ servo board —
VOM
(de 3 V range)
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Fig. 2 VOM Connection

SERVICE MODE (service program)
This set has built-in service program in the micro-
computer as usual sets.
The operation method of service program is ex-
plained below.
bods
Main operation in service mode
for details, refer to step 2.
(STOP)
& [servo all off]
PH (PLAY/PAUSE)
Fsane? on and CLV-S |
mode (RUN-UP made) on
PPI (FF)
core goes to ou fll
circumference.
KEY-MODE
HOLD
144/FR)
tracking
servo
and
OFF
<ON
[
UE
goes
to
sige
sled
servo
on
REMAIN
circumference.
(display stop]
Be sure to set HOLD switch OFF.
If not key inputs can not be operated.
Fig. 3 Key Positions
Step 1 (Service Mode setting method)
1. Turn the HOLD switch OFF with the external
power supply not plugged in (no power applied
to set) and press the PAE key.
2. Solder jumper TEST point.
(IC801 pin (9) (BAT-E) pin is grounded.
3. Plugin external power supply.
This puts the set into service mode.
— main board —
D-555/2Z555
Step 2 (Service Mode operation)
1, When service mode is set, the display will
change 6 times, and those 6 changes will be
repeated over and over.
With this the LCD display should be present
in service mode, Even if LCD does not display,
other operations will be performed.
2. When PPI or Kd key is pressed, the UPF moves
to the inside or outside circumference. Tracking
servo and sled servo go off when this is done, so
press KEY-MODE to turn on the tracking servo
if necessary.
3. When REMAIN is pressed, the display stops.
When REMAIN is released, the display con-
tinues to change. This allows check of each
segment.
4. When Pl key is pressed, CLV-S (pull-in mode)
starts while performing focus search. When
there is no disc installed, focus search is re-
peated several times while disc motor is rotating.
5. When KEY-MODE is pressed, tracking servo,
sled servo and CLV-A (servo during PLAY) go
ON.
6. When 4 and 5 are performed, the disc begins to
play. At this time, the top panel should be
closed and S901 are to be ON.
7. All servo (focus, tracking, sled and spindle) go
off when @ key is pressed. But disc motor
continues rotating for a while by inartia.
Step 3 (Service Mode release)
1. First be sure to unplug the external power
supply, then remove the TEST point solder
jumper.
2. The set will now operated normally.
TEST
Solder jumper for service mode.
sees checking or adjusting in service daa)
be sure to remove this solder jumper.
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Fig. 4 TEST Point Position
5

D-555/Z555
SECTION 3
ELECTRICAL ADJUSTMENTS
Notes on Adjustment
1. Perform adjustments except for RECHARGEA-
BLE VOLTAGE ADJUSTMENT and BATTERY
DISPLAY ADJUSTMENT in service mode. Be
sure to release service mode after completing
adjustment.
(Refer to ‘Service Mode (service program)’’ on
page 5.)
2. Perform adjustments in the order given.
3. Use YEDS-18 disc (part No.: 3-702-101-01) unless
otherwise indicated.
4. Power supply voltage: DC 9 V
HOLD switch: OFF
PREPARATION
Put the set into service mode (see page 5) and per-
form the following checks. Repair if there are any
abnormalities.
@ Sled Motor Check
]. Press the OPEN button and open the top panel.
-2. Press thep>P| , Kd keys and make sure that the
UPF moves smoothly, without catching, from the
inmost > outmost > inmost circumference.
pr: UPF moves outward
Ki: UPF moves inward
@ Focus Search Check
1. Press the OPEN button and open the top panel.
2. Press the PE key. (Focus search is performed
continuously.)
3. Observe the UPF objective lens and check that it
moves smoothly up and down with no catching or
noises,
4. Press the @ key.
Check that focus search operation stops. If it does
not stop, press the M™ key again longer than before.
But disc motor continues rotating for a while by
inartia.
VC (1/2 Vcc) Connecting Point
FOCUS BIAS ADJUSTMENT
TRACKING BALANCE ADJUSTMENT
When the adjustments above are performed, connect
the eS side of oscilloscope to the point below.
oscilloscope
to adjustment
point

Battery Display Adjustment
Adjustment Procedure: VOM
(de range)
main board
+}
TP (VREF) O70
1C802 (7) O=-- le
. Apply de +3.5 V to terminals for bult in battery
(BP-2).
Insert the disc (YEDS-18) and put the set into
play mode.
. Adjust RV801 so that main board 1C802 (1)
voltage and TP (VREF) voltage are equal.
_ If 1C802 ({)) voltage is heigher than TP (VREF)
voltage when turning the RV801 fully counter-
clockwise, short the jumper point (A) as shown
below and adjust RV801.
Adjustment Location: main board
battery
terminals
ics02@)
D-555/Z555
+ 5.2 V Adjustment
Adjustment Procedure: VOM
(dc range}
main board
TP (+6 7
1. Put the set into service mode (see page 5),
2. Connect the VOM to main board TP (+ 5.2 V),
3. Adjust RV401 for +5.2+0.1V reading on the
VOM.
4, After adjustment, release service mode (see page
5).
Adjustment Location: main board
1@ ORE. *
Qe OS7/25.1BF
ED. e

D-555/Z555
+3.4 V Adjustment
VOM
Adjustment Procedure: (de range!
main board
TP (+3.4 V) ees |: |
1, Put the set into service mode (see page 5).
2. Connect the VOM to main board test point TP
(+3.4 V).
3. Adjust the pattern connecting ( @ or ®) to
obtain 3.5 to 3.7 V reading on the VOM.
pattern connection
VOM reading
4. After adjustment, release service mode (see page
5).
Adjustment Location: main board
Rechargeable Voltage Adjustment
VOM
(de range)
|
+
TP (R. V] O_O
. Connect the VOM to main board test point TP
(R.V).
-
Apply
DC
9V
with
requrated
dc
power
supply
from
external
power
jack
CN401,
. Adjust RV402 for 7.05 — 7.5 V reading on the
VOM.
Note:
Measure
after
the
VOM
reading
becomes
stable.
Adjustment Procedure:
main board
ateememmeniiinmmmmmaame
Adjustment Location: main board

D-555/Z555
PLL Free Run Frequency Check and Adjustment Tracking Balance Adjustment
Check/Adjustment Procedure: Conditions:
frequency counter The set should be placed either horizontally.
servo board ; oscilloscope
a Adjustment Procedure: (DC range)
TP
(PLCK) O=—-O servo board
L "
(TE) ea +
‘ . é VC (1/2 Vcc) O0-—-——-—--O —
.
Disconnect
the
jumper
point
(A)
(EFM)
in
the
(See
page
6)
diagram below. . Connect the oscilloscope to servo board TP (TE).
. Connect a frequency counter to servo board test
point TP (PLCK).
3. Put the set into service mode (see page 5).
. Put the set into service mode (see page 5).
. Press the PP and 44 keys to move the UPF to
the center.
. Check that the frequency counter reading is
4,310 +0.01 MHz. If not, adjust RV504 so that
it is 4.310 +0.01 MHz.
. Insert the disc (YEDS-18) and close the top panel.
. Press the PRA key.
. It will go from focus search to focus on, and
. After adjustment, release service mode (see page :
5).
6. Short the jumper point shorted in step 1.
Check/Adjustment Location: servo board
CLV pull-in mode state. Tracking and sled are
OFF. |
. Adjust RV50O2 so that the oscilloscope waveform
is symmetrical on the top and bottom in relation
toOV.
Note: Take sweep time as long.as possible to obtain best
waveform.
A { A
12-23 Vp-pAV
ee Se :
=8
A=8
. Unplug the external power supply to stop spindle
motor from rotating.
. After adjustment, release service mode (see page
5).
Adjustment Location: servo board
EFM solder jumper point
Disconnect for checking and
[aciustman t. Short after
checking and adjustment.
“ere 6.04425 (BI[ TS
AA? leas apn : oe
Ad Eon ‘hs i <
@
EFM solder
jumper point
i Aa
twee

D-555/Z555 |
Focus Bias Adjustment
Conditions:
The set should be placed either horizontally.
Adjustment
Procedure:
oscilloscope
(DC range}
servo board
— rn,
TP 2kQ
i Soins cama Wao
VC (1/2 Vec) O———--—-0 —
(See page 6.)
oscilloscope
(DC range)
O)
1C502 @8) (FE) in
VC (1/2 Vcc) | ~_
(See page 6.)
servo board
. Put the set into service mode (see page 5).
. Connect the oscilloscope to servo board test point
TP (RF). .
. Press the PPI and Kl keys to move the UPF to
the center. (Move the UPF to the music area on
the disc to enable easy visibility of the eye pat-
tern).
. Insert the disc (YEDS-18) and close the top panel.
5. Press the P88 key.
It will go from focus search to focus on, and
CLV pull-in mode state. Tracking and sled are
OFF.
. Press the KEY-MODE button. (Tracking and sled
go ON.)
. Adjust RV503 so that the oscilloscope waveform
eye pattern is good. A good eye pattern means
that the diamond shape (0) in the center of the
waveform can be clearly distinguished.
RF Signal Reference Waveform (eye pattern)
VOLT/DIV: 200 mV
TIME/DOIV: 500nS
Wrrnnnnnri
\
WA
i
WN
RF
level
VV WN
VY
WAKA
\
ANY)
When observing the eye pattern, set the oscillo-
scope for AC range and raise vertical sensitivity.
- Push the HM (STOP) button spindle motor from
rotating and remove the disc.
. Remove the disc and connect the oscilloscope to
main board 1C502 @8) (FE).
. Adjust RV503 again refering to the table followed.
more than+ 70mV | Not adjust again.
Adjust RV503 again for + 70mV
+ 70mV to 0 mV reading on oscilloscope.
OmvV to -20 mV Adjust RV503 again for -20 mV
reading on oscilloscope.
less than -20 mV | Not adjust again.
11. After adjustment, release service mode (see page
5).
Adjustment Location: servo board
TP (RF)
e210 x: