Philips AZ7562 User manual

SHARON PLATFORM 4
Technical specification ......................................................1-1
Connections and controls..................................................1-2
Feature overview...............................................................1-3
Accessories .......................................................................1-3
Safety warnings.................................................................1-4
Service hints
Repair positions ............................................................2-1
Service tools..................................................................2-1
Training material ...........................................................2-1
ESD protection equipment............................................2-1
Handling chip components............................................2-2
Service test program .................................................2-3...2-4
Start-up procedure.............................................................2-5
Fault finding guide.....................................................2-5...2-9
Blockdiagram.....................................................................3-1
Pinning of ICs............................................................3-2...3-4
Circuit diagrams
Supply/Servodriver part.................................................4-1
Signal processing part...................................................4-2
Control part ...................................................................4-3
Audio part......................................................................4-4
Printed circuit board
Copperside view............................................................4-5
Componentside view.....................................................4-6
Exploded view ...................................................................5-1
Mechanical partslist...........................................................5-1
Electrical partslist ......................................................6-1...6-3
CS 46 427
AZ7562/00/05
©4822 725 26007
Published by PW 9713 Service Audio Printed in The Netherlands Subject to modification
Portable compact disc player
PLAY
.
PAUSE
CLASS 1
LASER PRODUCT
AZ7565/00/05
AZ7566/17/17T
TABLE OF CONTENTS
©Copyright 1997 Philips Consumer Electronics B.V. Eindhoven, The Netherlands
All rights reserved. No part of this publication may be reproduced, stored in a retrieval
system or transmitted, in any form or by any means, electronic, mechanical, photocopying,
or otherwise without the prior permission of Philips.

1-1
CS 46 428
TECHNICAL SPECIFICATION
General
Dimensions (WxHxD) : 134x30.5x154mm
Weight without batteries : 250g
Power supply modes
DC-in socket : 4.5-5.5V
Battery 2xLR6 : 1.8-3.6V
Accu-pack AY3360 (NiMH) : 1.8-3.6V
Accu-pack AY3361 (NiCd) : 1.8-3.6V
Battery lifetime
Battery empty detection
Battery weak level : 2.1V nom. ±150mV
Battery empty level : 1.9V nom. ±100mV
Charge circuit
Charge current : 300mA ±10%
Charge time for 80% : 4hrs nom.
Max. charge time (µP controlled) : 6hrs nom.
Temperature protection : 50°C ±5°C
Current consumption (DC-in=4.5V, excl. illumination)
Current consumption (Batt. supply=2.25V, excl. illumin.)
Shock resistance (ESA off)
+X/-X direction : >2.5G
+Y/-Y direction : >2.5G
+Z/-Z direction : >2.0G
Shock resistance by use of car base (ESA off)
+X/-X direction : >6G
+Y/-Y direction : >6G
+Z/-Z direction : >6G
Headphone out (measured with 16Ωload)
Max. output power (THD=10%) : 2x7mW (+1/-3dB)
Frequency response (1mW) : 20Hz-20kHz within 6dB
S/N ratio (unw.) : >80dB (83dB typ.)
S/N ratio (A-wght) : >85dB (88dB typ.)
THD+N (1kHz, 1mW) : <1% (0.2% typ.)
Channel crosstalk (1kHz, no load): <-50dB
Channel unbalance (-40dB) : <1dB
Volume attenuation (1kHz) : >80dB
Headphone out under CD-out conditions
(volume at maximum, load impedance 47kΩ)
Output level (1kHz, 0dB) : 680Vrms ±2dB
Frequency response : 20Hz-20kHz within 4dB
S/N ratio (unw.) : >85dB (90dB typ.)
S/N ratio (A-wght) : >90dB (95dB typ.)
THD+N (1kHz, 0dB) : <0.2% (0.05% typ.)
THD+N (1kHz, -20dB) : <0.3% (0.1% typ.)
Channel crosstalk (1kHz) : <-60dB (-70dB typ.)
Channel crosstalk (10kHz) : <-40dB (-50dB typ.)
Channel unbalance (1kHz, 0dB) : <0.5dB (0.2dB typ.)
Optical output (not on all versions)
Connection : 3.5mm optical fiber jack
Specification according to IEC958.
Laser
Output power : <5mW (3mW typ.)
Wavelength : 780nm
Measurement setup
Use Audio Signal disc SBC429 4822 397 30184
L
R
LEVEL METER
e.g. Sennheiser UPM550
with FF-filter
S/N and distortion meter
e.g. Sound Technology ST1700B
NOITAREPO NOITAREPO NOITAREPO NOITAREPO NOITAREPO FFOASE FFOASE FFOASE FFOASE FFOASE NOASE NOASE NOASE NOASE NOASE
edom-yalP Am053< .pytAm072 Am014< .pytAm513
edom-pmuJ Am086< .pytAm064 Am086< .pytAm075
yb-dnatS )egrahcer.lcxe( 05< µA
01 µ.pytA
NOITAREPO NOITAREPO NOITAREPO NOITAREPO NOITAREPO FFOASE FFOASE FFOASE FFOASE FFOASE NOASE NOASE NOASE NOASE NOASE
edom-yalP Am072< .pytAm012 Am582< .pytAm022
edom-pmuJ Am086< .pytAm584 Am086< .pytAm525
yb-dnatS )egrahcer.lcxe( Am021< .pytAm001
EPYTYRETTAB EPYTYRETTAB EPYTYRETTAB EPYTYRETTAB EPYTYRETTAB FFOASE FFOASE FFOASE FFOASE FFOASE NOASE NOASE NOASE NOASE NOASE
yrettabenilaklA )6RLx2( srh57.3> .pytsrh5.5 srh57.2> .pytsrh5.4
0633YAkcap-uccA )hAm0021,HMiN( srh0.3> .pytsrh0.4 srh5.2> .pytsrh5.3
1633YAkcap-uccA )hAm007,dCiN( srh8.1> .pytsrh52.2 srh5.1> .pytsrh0.2

DISPLAY. . . . . . . . . . . Window for showing the different playing modes, tracks and times
§. . . . . . . . . . . . . . . . . Button for selecting the next music track or, if held down, for searching forward for a particular passage
on the CD
∞. . . . . . . . . . . . . . . . . Button for selecting the previous music track or, if held down, for searching backward for a particular
passage on the CD
VOLUME. . . . . . . . . . . Control for adjusting the volume at the headphone output
HOLD / RESUME . . . . Switch for activating the HOLD function (blocking all buttons) and/or
RESUME function (resuming CD play)
MODE 0. . . . . . . . . . . Button for selecting the different playing modes:
SHUFFLE→SHUFFLE REPEAT ALL→REPEAT 1→REPEAT ALL→SCAN→off
PROG . . . . . . . . . . . . . Button for storing tracks in a program and for reviewing the program
DSP. . . . . . . . . . . . . . . Digital Sound Processing: Button for selecting the different sound settings at the headphone output:
ROCK→POP→CAR→INCREDIBLE SOUND→off
STOP 9. . . . . . . . . . . . Button for stopping CD play, deleting various settings, switching off the CD player and activating
charging
OPEN . . . . . . . . . . . . . Slide control for opening the lid of the CD player
2; . . . . . . . . . . . . . . . . Button for starting and pausing CD play
ESA. . . . . . . . . . . . . . . Electronic Shock Absorption: Switch for activating the electronic buffer memory for an undisturbed
sound
REMOTE p. . . . . . . . . Headphone and remote control socket (3.5mm)
Digital out (optical) . . For connecting the CD player to a Digital in (optical) socket in an amplifier or a digital recorder by means
of an optical cable
4,5 V DC . . . . . . . . . . . Socket for external power supply
Battery compartment for inserting batteries
Note: In case of power supply via the DC jack (mains adapter or cigarette lighter in the car) the display and the play button are
backlighted. In battery mode, the illumination is activated for 10 seconds after key operations.
1-2
CS 46 429
CONNECTIONS AND CONTROLS
DSP
PROGRAM
MODE
HOLD / RESUME
VOLUME
PREVIOUS NEXT
DISPLAY
ESA
PLAY / PAUSE
OPEN
STOP
OPTICAL DIGITAL OUTPUT
HEADPH. / REMOTE
BATTERIES
6 V DC

1-3
CS 46 430
4MROFTALPNORAHSSEIROSSECCA
2657ZA 5657ZA 6657ZA
00/ 50/ 00/ 50/ 71/ T71/
A00/0613YA A00/0613YA A00/0613YA A00/0613YA A00/0613YA ROTPADACD/CA 752019122284 X X
A50/0613YA A50/0613YA A50/0613YA A50/0613YA A50/0613YA ROTPADACD/CA 762019122284 X X
A71/0613YA A71/0613YA A71/0613YA A71/0613YA A71/0613YA ROTPADACD/CA 862019122284 X X
00/0623YA 00/0623YA 00/0623YA 00/0623YA 00/0623YA HCUOP 893010062284 O O X X
00/0633YA 00/0633YA 00/0633YA 00/0633YA 00/0633YA HMiNKCAPYRETTAB 716018312284 O O X X
00/1633YA 00/1633YA 00/1633YA 00/1633YA 00/1633YA dCiNKCAPYRETTAB 516018312284 X X O O
00/1053YA 00/1053YA 00/1053YA 00/1053YA 00/1053YA ETTESSACROTPADARAC 950017932284 O O O O
71/1053YA 71/1053YA 71/1053YA 71/1053YA 71/1053YA ETTESSACROTPADARAC 850017932284 X X
00/5453YA 00/5453YA 00/5453YA 00/5453YA 00/5453YA RETREVNOCCD/CDRAC 330019122284 O O O O
71/5453YA 71/5453YA 71/5453YA 71/5453YA 71/5453YA RETREVNOCCD/CDRAC 130019122284 X X
00/3653YA 00/3653YA 00/3653YA 00/3653YA 00/3653YA ETALPROTPADARAC 690123622284 O O O O
71/3653YA 71/3653YA 71/3653YA 71/3653YA 71/3653YA ETALPROTPADARAC 101123622284 O O
00/2763YA 00/2763YA 00/2763YA 00/2763YA 00/2763YA ENOHPRAE 343012422284 X X
S00/2763YA S00/2763YA S00/2763YA S00/2763YA S00/2763YA ENOHPRAE 143012422284 X X
73/1863YA 73/1863YA 73/1863YA 73/1863YA 73/1863YA ENOHPDAEH 207012422284 X X
00/3673YA 00/3673YA 00/3673YA 00/3673YA 00/3673YA LORTNOCETOMERDCLDROC-NI 217018122284 O O X X
00/0683YA 00/0683YA 00/0683YA 00/0683YA 00/0683YA XOBREKAEPSEVITCA 315015442284 O O O O
71/0683YA 71/0683YA 71/0683YA 71/0683YA 71/0683YA XOBREKAEPSEVITCA 415015442284 O O
4643YA 4643YA 4643YA 4643YA 4643YA mm5.3(DROCIFIH →)gulp-L,hcnic 188110232284 O O O O O O
9501CBS 9501CBS 9501CBS 9501CBS 9501CBS mm5.3(DROCIFIH →)hcnic 206121232284 O O X X O O
0721CBS 0721CBS 0721CBS 0721CBS 0721CBS mm5.3(REBIFLACITPO →)kniLsoT 237261232284 O O
4MROFTALPNORAHSSERUTAEF
2657ZA 5657ZA 6657ZA
)ASE(NOITPROSBAKCOHSCINORTCELE .ces02 .ces02 .ces02
NOITCNUFEMUSER XXX
GNISSECORPDNUOSLATIGID XXX
KCAPYRETTABHMiNdnadCiNNOITCNUFEGRAHCER XXX
NOITANIMULLIDCL XXX
NOITANIMULLIYEK-YALP – – X
DERAPERPLORTNOCETOMERDROC XXX
)lacitpo(TUPTUOLATIGID –X–
X....supplied with the set, O....optional available

1-4
CS 46 431
© WARNING
All ICs and many other semiconductors are susceptible to
electrostatic discharges (ESD). Careless handling during
repair can reduce life drastically.
When repairing, make sure that you are connected with the
same potential as the mass of the set via a wristband with
resistance. Keep components and tools at this potential.
f ATTENTION
Tous les IC et beaucoup d´autres semi-conducteurs sont
sensibles aux décharges statiques (ESD). Leur longévite
pourrait être considérablement écourtée par le fait qu´aucune
précaution nést prise à leur manipulation.
Lors de réparations, s´assurer de bien être relié au même
potentiel que la masse de l´appareil et enfileer le bracelet
serti d´une résistance de sécurité.
Veiller à ce que les composants ainsi que les outils que l´on
utilise soient également à ce potentiel.
d WARNUNG
Alle ICs und viele andere Halbleiter sind empfindlich
gegenüber elektrostatischen Entladungen (ESD).
Unsorgfältige Behandlung im Reparaturfall kann die
Lebensdauer drastisch reduzieren.
Sorgen Sie dafür, daß sie im Reparaturfall über ein Puls-
armband mit Widerstand mit dem Massepotential des
Gerätes verbunden sind.
Halten Sie Bauteile und Hilfsmittel ebenfalls auf diesem
Potential.
ñ WAARSCHUWING
Alle IC´s en vele andere halfgeleiders zijn gevoelig voor
electrostatische ontladingen (ESD).
Onzorgvuldig behandelen tijdens reparatie kan de levensduur
drastisch doen vermindern. Zorg ervoor dat u tijdens reparatie
via een polsband met weerstand verbonden bent met hetzelfde
potentiaal als de massa van het apparaat.
Houd componenten en hulpmiddelen ook op ditzelfde potentiaal.
i AVVERTIMENTO
Tutti IC e parecchi semi-conduttori sono sensibili alle scariche
statiche (ESD).
La loro longevità potrebbe essere fortemente ridatta in caso di
non osservazione della più grande cauzione alla loro
manipolazione. Durante le riparationi occorre quindi essere
collegato allo stesso potenziale che quello della massa
delápparecchio tramite un braccialetto a resistenza.
Assicurarsi che i componenti e anche gli utensili con quali si
lavora siano anche a questo potenziale.
©
Safety regulations require that the set be restored to its
original condition and that parts which are identical with
those specified be used.
Safety components are marked by the symbol
i
Le norme di sicurezza estigono che l´apparecchio venga
rimesso nelle condizioni originali e che siano utilizzati i
pezzi di ricambiago identici a quelli specificati.
Componenty di sicurezza sono marcati con
ñ
Veiligheidsbepalingen vereisen, dat het apparaat in zijn
oorspronkeliijke toestand wordt teruggebracht en dat
onderdelen, identiek aan de gespecificeerde, worden toegepast.
De Veiligheidsonderdelen zijn aangeduid met het symbool
sVarning !
Osynlig laserstrålning när apparaten är öppnad och
spärren är urkopplad. Betrakta ej strålen.
∂Advarsel !
Usynlig laserstråling ved åbning når sikkerhedsafbrydere
er ude af funktion. Undgå udsaettelse for stråling.
ßVaroitus !
Avatussa laitteessa ja suojalukituksen ohitettaessa olet alttiina
näkymättömälle laserisäteilylle. Älä katso säteeseen !
f
"Pour votre sécurite, ces documents doivent être utilisés par
des spécialistes agréés, seuls habilités à réparer votre
appareil en panne".
ESD
SAFETY
d
Bei jeder Reparatur sind die geltenden Sicherheitsvor-
schriften zu beachten. Der Originalzustand des Gerätes
darf nicht verändert werden. Für Reparaturen sind Original-
ersatzteile zu verwenden.
Sicherheitsbauteile sind durch das Symbol markiert.
f
Les normes de sécurité exigent que l`appareil soit remis
à l`état d`origine et que soient utilisées les pièces de
rechange identiques à celles spécifiées.
Les composants de sécurité sont marqués
CLASS 1
LASER PRODUCT
© DANGER: Invisible laser radiation when open.
©
After servicing and before returning the set to customer
perform a leakage current measurement test from all
exposed metal parts to earth ground, to assure no
shock hazard exists.
The leakage current must not exceed 0.5mA.
AVOID DIRECT EXPOSURE TO BEAM.
© AVAILABLE ESD PROTECTION EQUIPMENT :
anti-static table mat large 1200x650x1.25mm 4822 466 10953
small 600x650x1.25mm 4822 466 10958
anti-static wristband 4822 395 10223
connection box (3 press stud connections, 1MΩ) 4822 320 11307
extendible cable (2m, 2MΩ, to connect wristband to connection box) 4822 320 11305
connecting cable (3m, 2MΩ, to connect table mat to connection box) 4822 320 11306
earth cable (1MΩ, to connect any product to mat or to connection box) 4822 320 11308
KIT ESD3 (combining all 6 prior products - small table mat) 4822 310 10671
wristband tester 4822 344 13999
SAFETY WARNINGS

2-1
CS 46 432
SERVICE HINTS
REPAIR POSITION COPPERSIDE
To get access to the componentside of the
printed circuit board proceed as follows:
1. Disconnect DC-cable and headphone
2. Remove bottom screws
(remember hidden screw in battery compartment)
3. Open the CD-door
4. Lift the top-cabinet
5. Close the door-switch (e.g. paper-clip)
6. Supply the unit via external DC-socket
To get access to the copperside of the
printed circuit board proceed as follows:
1. Disconnect DC-cable and headphone
2. Remove bottom screws
(remember hidden screw in battery compartment)
3. Open the CD-door
4. Lift the top-cabinet
5. Take the printed circuit board/drive unit out of the bottom
(take care of battery springs)
6. Position printed circuit board/drive unit into top-cabinet
7. Supply the unit via external DC-socket
SERVICE TOOLS
Audio signal disc SBC429 4822 397 30184
Playability test disc SBC444 4822 397 30245
Test disc 5 (disc without errors) + Test disc 5A (disc with dropout errors,
black spots and fingerprints) SBC426/SBC426A 4822 397 30096
TRAINING MATERIAL
Portable CD 1994 – Principles of Electronic Shock Absorption System ESA,
Key components 1994, Remote control system 4822 725 24941
Portable CD 1996 – Key components 1996, Battery charging, DC/DC-converter 4822 725 24986
ESD PROTECTION EQUIPMENT
Anti-static table mat large 1200x650x1.25mm 4822 466 10953
small 600x650x1.25mm 4822 466 10958
Anti-static wristband 4822 395 10223
Connection box (3 press stud connections, 1MΩ) 4822 320 11307
Extendible cable (2m, 2MΩ, to connect wristband to connection box) 4822 320 11305
Connecting cable (3m, 2MΩ, to connect table mat to connection box) 4822 320 11306
Earth cable (1MΩ, to connect any product to mat or to connection box) 4822 320 11308
KIT ESD3 (combining all 6 prior products - small table mat) 4822 310 10671
Wristband tester 4822 344 13999
REPAIR POSITION COMPONENTSIDE
The unit is now in a proper working position and can be turned in all directions necessary to get access for measurements.

2-2
CS 46 433
HANDLING CHIP COMPONENTS

SERVICE TEST PROGRAM
1. PRELIMINARY SETUP
•To enter the service test program hold the keys “PROGRAM”
and “STOP” depressed while turning POWER ON.
•The display shows the software-version of the built-in
microprocessor (e.g. “90S”).
•The program is now in the main menu – various tests can be
entered by pressing the corresponding buttons (see flow chart
or detailed description of test programs below).
2. DISPLAY TEST
Purpose: Check the internal display driver of the µP and the
display segments.
•To enter the display test start service test program and press
the “NEXT” button.
•The display shows test pattern 1. Three more test patterns are
available.
•To jump to the next pattern press the “PLAY” button.
•To exit the display test and return to the main menu press the
“STOP” button.
3. KEY & REMOTE CONTROL TEST
Purpose: Check operation of keys and remote control.
•To enter the key & remote control test start service test
program and press the “MODE” button.
•The display shows “--”.
•Press keys on the set resp. the remote control and check the
corresponding key codes on the display of the CD-player resp.
the test patterns on the display of the remote control. Codes
and patterns can be found in table 1 (see flow chart).
•To exit the key & remote control test and return to the main
menu press the “STOP” button.
4. PLAYBACK TEST WITH ERROR ANALYSIS
Purpose: Analyse errors that occur during playback.
•To enter the playback test start service test program and press
the “DSP” button. Note that the playback test can only be
entered if the CD-door is closed.
•The set now reads the TOC and switches to stand-by.
•Press the “PLAY” button to start the error analysis.
As long as the playback is free of errors the display shows track
and time information as in normal play-mode. In case of an error
a corresponding error code will be displayed. The meaning of
this error code can be found in table 2 (see flow chart).
Note: Errors can either be
“fatal” or “non fatal” . Fatal errors
always stop the playback, non fatal errors only cause a
short interruption of the music. Fatal errors are displayed
as long as the set is connected to the power source, non
fatal errors are displayed till a new error occurs or a
button is pressed.
•To stop the playback test disconnect the set from the power
source.
5. IC-CHECK
Purpose: Check communication between µP ↔CD7 and
µP ↔NPC (DRAM controller).
•To enter the IC-check start service test program and press the
“PLAY” button.
•The display shows “C
x n y ”. “C x ” indicates result of CD7-check;
“n
y ” indicates result of NPC-check. x,y = ”1” means that the
test has been passed successfully;
x,y = ”0” specifies an error
during communication.
•To enter the servo test press the “PLAY” button, to exit the IC-
check and return to the main menu press the “STOP” button.
6. SERVO TEST
Purpose: Check door- and inner-switch, movement of slide and
acceleration of discmotor.
•To enter the servo test start service test program and press the
“PLAY” button.
•The display shows “S
xy ”. “ x ” indicates state of door-switch; “ y ”
indicates state of inner-switch.
x,y = “1” means switch is open.
•To move slide outside hold the “NEXT” button depressed.
•To move slide inside hold the “PREV” button depressed.
•To accelerate the discmotor clockwise hold the “MODE” button
depressed.
•To accelerate the discmotor counter-clockwise hold the “DSP”
button depressed.
•To enter the focus test press the “PLAY” button, to exit the
servo test and return to the main menu press the “STOP”
button.
7. FOCUS TEST
Purpose: Check movement of lens and operation of focus servo.
•The focus servo loop is switched on and the set starts
searching the focus. If the focus is OK the display shows “ F”,
else “-F”.
•When the disc is turned manually “focus noise” is audible.
•To move slide outside hold the “NEXT” button depressed.
•To move slide inside hold the “PREV” button depressed.
•To accelerate the discmotor clockwise hold the “MODE” button
depressed.
•To accelerate the discmotor counter-clockwise hold the “DSP”
button depressed.
•In case the focus is OK the discmotor test can be entered by
pressing the “PLAY” button, to exit the focus test and return to
the main menu press the “STOP” button.
8. DISCMOTOR TEST
Purpose: Check speed regulation of discmotor.
•The speed regulation is switched on and the discmotor starts
rotating. If the speed reaches 75% of the nom. speed the
display shows “ d”, else “-d”.
Note: During this test the µP displays the speed-flag of the CD7.
As this IC can only monitor a small range of speed
deviation the displayed information is not very reliable. In
case of doubt check disc motor control circuit.
•In case the disc speed is OK the radial test can be entered by
pressing the “PLAY” button, to exit the discmotor test and
return to the main menu press the “STOP” button.
9. RADIAL TEST
Purpose: Check if radial loop locks and an audio signal is
output.
•The display shows “rd”.
•The radial servo loop is switched on, mute is released and an
audio signal is audible.
•To jump 10 tracks outside press the “NEXT” button.
•To jump 10 tracks inside press the “PREV” button.
•To enter the error correction analysis press the “PLAY” button,
to exit the radial test and return to the main menu press the
“STOP” button.
10. ERROR CORRECTION ANALYSIS
Purpose: Check the error status of the CD7 in double speed
mode (measurement of block error rate, number of
interpolations, a.s.o).
•The display shows “H”.
•The disc turns at double speed, mute is released and music is
audible with twice the normal speed.
Note: This test program is used for statistical analysis of the
error correction of the CD7. As the test requires additional
hard- and software it can´t be carried out at “normal”
repair shops.
•To exit the error correction analysis and return to the main
menu press the “STOP” button.
2-3
CS 46 434

2-42-4
CS 46 435
table1 – key & RC-test
DISPLAY CORD RC
no change
no change
DISPLAY SET

01
02
03
04
05
07


rC 01



rC 03



rC 05


rC 06
KEYS OF SET
PLAY
MODE
NEXT
DSP
PREVIOUS
PROGRAM
KEYS OF CORD-REMOTE CONTROL
(not on all versions)
PLAY
NEXT
PREVIOUS
STOP
Press “STOP” on the CD-player to exit the key & RC-test.
PRELIMINARY
SETUP
EXIT
SERVICE TEST
PROGRAM
Display shows
software-version
(e.g.“90S”)
DISPLAY TEST
Display shows
test pattern 1
KEY & RC-TEST
Display shows
“--”
SERVO TEST
Display shows
“S
xy ”
To enter service test program hold
“PROGRAM” & “STOP”-button depressed,
while turning POWER ON.
Remark: Playback test can only
be entered if CD-door
is closed!
IC-CHECK
Display shows
“C
x n y ”
FOCUS TEST 1)
CUE-MODE
Track servo jumps
16 tracks forward
RADIAL TEST
Display shows
“rd”
STATUS OF
ERROR CORR.
Display shows "H"
“NEXT”
pressed? “MODE” pressed? “DSP” pressed? “PLAY” pressed?
“PLAY”
pressed?
Error during
playback?
FOCUS
found?
“PLAY”
pressed?
“PLAY”
pressed?
“PLAY”
pressed? “NEXT” pressed?
REVIEW-MODE
Track servo jumps
16 tracks backw.
“PREV”
pressed?
Disc motor
at nom.speed
?
Display shows
“F”
Fatal error?
Display shows
error-code
PLAYBACK
TEST
DISC MOT.TEST
Disc motor is on
Display shows
“-F”
Slide moves
outside Slide moves inside
Display shows
“d”Display shows “-d”
“NEXT”
pressed?
“PLAY”
pressed?
“PLAY”
pressed?
“PLAY”
pressed?
Display shows
test pattern 3
Display shows
test pattern 2
“PREV”
pressed? “MODE” pressed? “DSP” pressed?
Stop playback
Press keys
and check display
acc. to table1
MAIN MENU
N
Y
N
Y
N
Y
N
Y
N
Y
N
Y
N
Y
N
Y
N
Y
N
Y
N
Y
N
Y
N
Y
N
Y
N
Y
N
Y
N
Y
N
Y
N
Y
N
Y
N
Y
CODE
E 1001
E 1002
E 1003
E 1004
E 1005
E 1011
E 1012
E 1013
E 1014
E 1018
E 1019
ERROR
sledge out error
focus error
radial error
subcode error
DRAM filling
error
sledge in error
focus search
error
fatal radial error
fatal subcode
error
motor N1 error
motor N2 error
TYPE
non fatal
non fatal
non fatal
non fatal
non fatal
fatal
fatal
fatal
fatal
fatal
fatal
CAUSE
The sledge did not come out of it´s
inner position (inner switch of CDM12
doesn´t open) before 240ms have
passed by.
Focus point lost.
The offtrack values of CD7 don´t
decrease properly when jumping tracks,
or CD7 indicates offtrack while radial
tracking is switched on.
No valid subcode information for 250ms.
The DRAM controller was not able to
connect two consecutive audio frames.
The sledge did not reach it´s inner pos.
(inner switch of CDM12 doesn´t close)
before 6 seconds have passed by.
The focus point could not be found
inbetween 4 seconds.
Radial error occured 15 times.
No valid subcode information for
3.5 seconds.
The disc didn´t reach 75% of the
nom. single speed inbetween 4.5 sec.
The disc didn´t reach 75% of the
nom. double speed inbetween 4.5 sec.
test pattern 1
table2 – playback error analysis
test pattern 2
test pattern 3
Disc motor turns
clockwise
(accelerate)
Disc motor turns
counter-clockwise
(brake)
Slide moves
outside Slide moves inside
“NEXT”
pressed? “PREV” pressed? “MODE” pressed? “DSP” pressed?
N
Y
N
Y
N
Y
N
Y
Disc motor turns
clockwise
(accelerate)
Disc motor turns
counter-clockwise
(brake)
C
x ....result of CD7-check
n
y ....result of NPC-check
x,y = “1” means test OK
x ....state of door switch
y ....state of inner switch
x,y = “1” means switch open
1) ATTENTION: LASER IS SWITCHED ON
→AVOID DIRECT EXPOSURETO BEAM !!
FLOW CHART

2-5 2-5
CS 46 436
PLAY
pressed ?
µP switches
DC/DC converter on
(POWER=L)
µP sends
power-on reset
(PORES=L)
µP sends
parameter/settings
to CD7 and NPC
µP sends
command to CD7:
“move slide inside”
inner switch
closed within
6sec ?
µP sends
command to CD7:
“move slide outside”
µP sends
commands to CD7:
“switch laser on”
“slide servo off”
“focus servo on”
inner switch
open within
0.3sec ?
focus
found within
3.2sec ?
focus
not found
2 times ?
µP sends
command to CD7:
“disc motor to 75%”
disc motor at
75% of nom.speed
within 2sec ?
µP sends
command to CD7:
“radial loop on”
subcode
found within
10sec ?
release MUTE
Start-up procedure for ext.DC supply,
no accu inserted, hold-switch in off pos.,
resume-mode off, CD-lid closed.
increment counter
“focus not found”
N
N
N
N
N
N
Y
Y
Y
YY
Y
Y
N
POWER OFF
(stand-by)
display shows
“no disc”
start-up stopped
display shows
“Error”
start-up stopped
PLAY-MODE
turntable and
disc free ?
N
N
Y
lens
movement ?
Y
CHECK
LIGHTPATH
CHECK
FOCUS PATH
N
triangle
voltage on
focus actuator
OK ?
Y
N
connections
to/from CD-drive
OK ?
Y
replace
CD-drive repair connections
triangle
voltage on
pin 42 of
7950 ?
check
servo driver 7950
N
Y
check
CD7 7830
Y
N
remove
obstruction replace CD-drive
mechanical
obstruction ?
START-UP PROCEDURE MAIN FAULT FINDING GUIDE
focus found ? N
Y
enter
service program
“FOCUS TEST”
N
Y
enter
service program
“DISC MOT. TEST”
radial tracking
OK ?
disc speed
OK ?
N
Y
N
enter
service program
“RADIAL TEST”
errors during
playback ? Y
enter
service program
“PLAYBACK TEST”
CHECK
CD-DRIVE AND
SERVO CIRCUITS
CD-DRIVE AND
SERVO CIRCUITS
OK
check/repair
FOCUS PATH
check/repair
TURNTABLE
MOTOR PATH
check/repair
RADIAL
TRACKING
FUNCTIONAL
TEST
FAULT FINDING GUIDE FOCUS PATH

2-6
CS 46 437
laser light ?
N
N
Y
voltage betw.
pin 2/3 of 1800
=1.2V ?
Y
CHECK
LIGHTPATH
replace
CD-drive
N
voltage on
pin 4 of 1800
=1.2V ?
voltage on
pin 16 of 7800
=1.8-2.0V ?
Ycheck
2800/3800 N
Y
replace
CD-drive
N
photodiodes
OK ?
Y
replace
CD-drive
replace
CD-drive
N
Y
N
Ycheck
CD7 7830
check
supply +3.5
comp. around
7901 OK ? N
Y
repair
replace
HF-amplifier 7800
pin 8 of 7800
=2.5V ?
pin 7 of 7800
=high ?
FAULT FINDING GUIDE LIGHTPATH

2-7
CS 46 438
discmotor
turning ?
N
N
Y
Y
CHECK
FOCUS PATH
CHECK
TURNTABLE
MOTOR PATH
Y
N
remove
obstruction replace CD-drive
connections
to/from CD-drive
OK ?
N
Y
repair
connections
turntable and
disc free ?
mechanical
obstruction ?
Y
N
check
servo driver 7950 check CD7 7830
check
CD7 7830
focus OK ?
eye-pattern
OK ?
Y
N
Y
YCHECK
LIGHTPATH
N
N
Y
N
check
servo driver 7950
replace
CD-drive
PWM-output
on pin 33 of
7830 ?
PWM-output
on pin 33 of
7830 ?
servo signals
on pin 2/44 of
7950 ?
FAULT FINDING GUIDE TURNTABLE MOTOR PATH

2-8
CS 46 439
slide
movement ?
N
N
Y
eye-pattern
OK ?
Y
CHECK
RADIAL
TRACKING
replace
CD-drive
N
servo signals
on slide motor
?
Y
N
connections
to/from CD-drive
OK ?
Y
replace
CD-drive repair connections
servo signals
on pin 37 of
7950 ?
check
servo driver 7950
N
Y
check
CD7 7830
CHECK
LIGHTPATH
tracking ? N
YN
servo signals
on track servo
?
Y
N
connections
to/from CD-drive
OK ?
Y
replace
CD-drive repair connections
servo signals
on pin 36 of
7950 ?
check
servo driver 7950
N
Y
check
CD7 7830
enter
service program
“RADIAL TEST”
enter
service program
“SERVO TEST”
check
CD7 7830
FAULT FINDING GUIDE RADIAL TRACKING

2-9
CS 46 440
all previous
tests passed
?
Y
N
Y
mechanical
obstruction ?
N
FUNCTIONAL
TEST
start-over
drive&servo checks
remove
obstruction
Y
set sensitive
to temperature
?
N
localize temperature
sensitive part&repair
Y
still errors
during playback
?
N
replace set
replace
CD-drive
SET REPAIRED
FAULT FINDING GUIDE FUNCTIONAL TEST

3-13-1
CS 46 441
TDA1548T
DAC&DSP
SERIAL
INTERFACE VOLUME, SOUND & MUTE CONTROL
DAC DAC
OVERSAMPLING
NOISE SHAPER OVERSAMPLING NOISE SHAPER
SAA7372
CD7 SM5856AF NPC
TDA1302
HF-AMPLIFIER
L.P.F.
H.P.F.
+
LASER
SUPPLY &
PROTECT.
R2
D1
D2
D3
D4
R1
O5
O1
O3
O4
SCLK
WCLK
MISC
DATA
ZSCK
ZLRCK
ZSRDATA
BCK
WS
DATA
YSCK
YLRCK
YSRDATA
O6
Hf HFIN
RESET
R2
D1
D2
D3
R1
Lo
LDonVddl LDON A0...A9, D0...D3
CAS, RAS, WE, OE
MI
+3.5
DISC
Laser
diode
PHOTO DIODE
ARRAY
TURNTABLE
MOTOR
TRACK
SERVO
FOCUS
SERVO
SLIDE
SERVO
D1 D2
R2R1
D3
CD-drive
CDM 12.3
BLC
Monitor
diode
FLEX PCB
pick up
unit
slide motor
t
u
r
n
t
a
b
l
e
Inner switch
9
11
1012
L.P.F.
L.P.F.
L.P.F.
L.P.F.
L.P.F.
L.P.F.
L.P.F.
L.P.F.
L.P.F.
L.P.F.
L.P.F.
1
L.P.F.
DRAM INTERFACE
A/D-CONVERTER
SHOCK
CONTROL
CONTROLLER
INTERFACE
INPUT
INTERFACE I/O EXTENSION OUTPUT INTERFACE
YFLAG
SERIAL
INTERFACE
µP
INTERFACE
LCD
DECODERENCODER
CONTROL PART ATTENUATORINPUT BUFFER
EBU
INTERFACE
RAM
ADDRESS.
SUBCODE
PROCESS.
MOTOR
CONTROL
OUTPUT
STAGES
ERROR
CORRECT.
FRONT END TIMING
DIGITAL PLL
SRAM
EFM
DEMOD.
Vref
KILL
Vref
PRE-PROC. FUNCTION
CONTROL
VERSATILE
INTERFACE
AUDIO
PROCESS.
PEAK
DET.
DIGITAL FILTER / INTERPOLATION
PTMP87CH20F
LCD DRIVER
,
,
CLOCK GEN.
& TIMING 16bit TIMER COUNTER ALU
,,,,,,,,,
,,,,,,,,,
,,,,,,,,,
ROMRAM
4MHz
DISPLAY ILLUMINATION
,,,,
,,,,
,,,,
,,,,
,,,,
,,,,
DIGITAL OUT
(not on all versions)
I/O PORTS
RESET
RCI, RCO, RCD
+µP
SL (PWM signal)
SL FO RA
FO (PWM signal)
RA (PWM signal)
SLIDE_IN
FOCUS_IN
DM±
Sldm±
Focus±TRACK_IN
H-BRIDGE
MOTOR DRIVER 3
H-BRIDGE
MOTOR DRIVER 1
H-BRIDGE
MOTOR DRIVER 4
H-BRIDGE
MOTOR DRIVER 2
DC/DC
CONVERTER FEED- BACK
+S+1.2 Pow-on
+A
+A CL saw
+1.8
MPC1718
SERVO DRIVER
SAWTOOTH
OSCILLATOR
DM_IN MOTO1
(FROM CD7)
+A CL saw
+A CL saw
+A CL saw
+A CL saw
CL saw
+3.5
Power
switch
Reg.
Ref.
Track±
L.P.F.
L.P.F.
L.P.F.
L.P.F.
FLEX PCB
HEADPHONE&
RC-SOCKET
RIGHTVol
Vor
Vcom LEFT
AMB
SOUND
FEATURE
AMB
SOUND
FEATURE
DC-in socket
+
ACCU or
BATTERY
ACCU DET.
PWM_IN
+A
SUPPLY/CHARGE CIRCUIT
BATT-
BATT+
3V
0
-3V
2,5V
0
-2,5V
eye-pattern signal
> 800 mVpp
TB=0.5µs
1
during focus search
TB=0.1s
9
+µP
RC
(FROM/TO
RC-CIRCUIT)
DOBM
(FROM CD7)
AMB_ON
(FROM NPC)
AMB
(FROM NPC)
MOTO1 16.9MHz 8.46MHz DOBM (TO DIGITAL OUT)
POWER
REF_ON
U_BATT
U_CHG
PWM_OUT
CHG_ON
PWM_IN
T_ACCU
ACCU_IN
DC_ON
PORES
MUTE
S_MUTE
DBB
+DC
OVERVOLTAGE
PROTECTION
CHARGE
CONTROL ACCU MEASURING
TEMP.
CONT.
AMB
AMB_ON VOLUME
CONTROL
TREB PORES
(FROM µP)
RESET
S_MUTE
(FROM µP)
TREB
(FROM NPC)
DBB
(FROM µP)
MUTE
(FROM µP)
T_ACCU
DC_ON
ACCU_IN
PWM_OUTCHG_ON U_CHG U_BATT
REF_ON
FROM µP
TO µP
16.9MHz+LF
12
10
14
16
15
13
11
3V
0
servo in or disc motor cw
not moving
servo out or disc motor ccw
servo out or disc motor cw
not moving (f=530kHz)
servo in or disc motor ccw
16
14
13
15
DATA
WCLK left channel
MSB
LSB
MSB
LSB
right channel
SCLK
TRANSFER OF AUDIO SAMPLESVIA SERIAL INTERFACE OF CD7 AND NPCCD7 →NPC
NPC →DAC
2
3
4
5
6
7
FROM/TO SUPPLY/CHARGE CIRCUIT
4Mbit
DRAM 4Mbit DRAM
,,,
,,,
RC
(FROM/TO RC-SOCKET)
KEYBOARD
KEY ILLUMIN.
RC-CIRCUIT
TO DAC&DSP/
AMB SOUND FEATURE
BLOCKDIAGRAM

PINNING OF INTEGRATED CIRCUITS
TDA1302T – HF-PREAMPLIFIER AND LASER SUPPLY CIRCUIT
Pin Name Direction Description
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
1 O4 HF-preamp →CD7 output of current amplifier 4
2 O6 HF-preamp →CD7 output of current amplifier 6
3 O3 HF-preamp →CD7 output of current amplifier 3
4 O1 HF-preamp →CD7 output of current amplifier 1
5 O5 HF-preamp →CD7 output of current amplifier 5
6 O2 HF-preamp →CD7 output of current amplifier 2
7 LDon CD7 →HF-preamp control pin for switching the laser on/off
8 Vddl laser power control →HF-preamp laser supply voltage
9 Vrfe HF-preamp →equalized output voltage of sum signal of amplifiers 1...4
10 Vrf not connected unequalized output
11 HG GND control pin for gain switch
12 LS CD7 →HF-preamp control pin for double speed switch (switches equalization)
13 C external capacitor (bandwidth of ALPC)
14 Adj reference input
15 GND GND 0V supply, substrate connection
16 Lo HF-preamp →laser diode current output to laser diode
17 MI monitor diode →HF-preamp laser monitor diode input
18 Vdd +3.5 positive supply voltage
19 I2 GND photo detector input 2 (not used)
20 I5 diode array →HF-preamp photo detector input 5 (satellite)
21 I1 diode array →HF-preamp photo detector input 1 (central)
22 I3 diode array →HF-preamp photo detector input 3 (central)
23 I6 diode array →HF-preamp photo detector input 6 (satellite)
24 I4 diode array →HF-preamp photo detector input 4 (central)
TDA1548T – DAC WITH HEADPHONE AMPLIFIER AND DSP
Pin Name Direction Description
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
1 VSSO GND ground (operational amplifier)
2 VCOM DAC →sound control common output pin
3 VOL DAC →sound control audio output left channel
4 IOL →DAC capacitor for left channel 1st order filter function
5 MODE0 GND mode0 selection pin
6 MODE1 GND mode1 selection pin
7 BCK NPC →DAC bit clock input
8 WS NPC →DAC word select input
9 DATA NPC →DAC data input
10 VDDD +LF supply voltage (digital part)
11 VSSD GND ground (digital part)
12 SYSCLK CD7 →DAC 64fs/256fs/384fs system clock input
13 IF1 GND input format selection1
14 IF2 +LF input format selection2
15 DEEM GND de-emphasis input (fs=44.1kHz)
16 MUTE µP →DAC soft-mute input
17 CLSEL +LF system clock selection input
18 ADREF DAC →potmeter reference voltage output to ext. potmeter
19 ADTR →DAC analog sense input for treble setting
20 ADBB →DAC analog sense input for bass boost setting
21 ADVC →DAC analog sense input for volume control setting
22 AD3S µP →DAC 3-position switch input for flat/min/max setting
23 VDDA +LF supply voltage (analog part)
24 VSSA GND ground (analog part)
25 VREF →DAC internal reference voltage (typ. VDDA/2)
26 IOR →DAC capacitor for right channel 1st order filter function
27 VOR DAC →sound control audio output right channel
28 VDDO +LF supply voltage (operational amplifier)
SAA7372 – DECODER AND DIGITAL SERVO IC CD7
Pin Name Direction Description
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
1 VSSA1 GND supply (analog) of CD7
2 VDDA1 +3.5 supply (analog) of CD7
3 D1 HF-preamp →CD7 unipolar current input (central diode signal input)
4 D2 HF-preamp →CD7 unipolar current input (central diode signal input)
5 D3 HF-preamp →CD7 unipolar current input (central diode signal input)
6 VRL GND reference input for ADC
7 D4 HF-preamp →CD7 unipolar current input (central diode signal input)
8 R1 HF-preamp →CD7 unipolar current input (satellite diode signal input)
9 R2 HF-preamp →CD7 unipolar current input (satellite diode signal input)
10 IREFT →CD7 current reference for calibration ADC
11 VRH reference output from ADC
12 VSSA2 GND supply (analog) of CD7
13 SELPLL +3.5 selects whether internal clock multiplier PLL is used
14 ISLICE CD7 →current feedback from data slicer
15 HFIN →CD7 comparator signal input
16 VSSA3 GND supply (analog) of CD7
17 HFREF →CD7 comparator common mode input
18 IREF →CD7 reference current pin (nom. VDD/2)
19 VDDA2 +3.5 supply (analog) of CD7
20 TEST1 GND test control input
21 CRIN X-Tal →CD7 crystal/resonator input
22 CDOUT X-Tal →CD7 crystal/resonator output
23 TEST2 GND test control input
24 CL16 CD7 →NPC, DAC 16.9344MHz system clock output
25 CL11 CD7 →11.2896MHz or 5.6448MHz clock output (3-state)
26 RA CD7 →servo driver radial actuator output
27 FO CD7 →servo driver focus actuator output
28 SL CD7 →servo driver slide actuator output
29 TEST3 GND test control input
30 VDD1P +3.5 supply (digital) of CD7
31 DOBM CD7 →digital output bi-phase mark output (3-state)
32 VSS1 GND supply (digital) of CD7
33 MOTO1 CD7 →servo driver motor output1 of CD7; versatile (3-state)
34 MOTO2 CD7 →servo driver motor output2 of CD7; versatile (3-state)
35 SBSY CD7 →NPC, µP subcode block sync (3-state)
36 SFSY CD7 →subcode frame sync (3-state)
37 RCK →CD7 subcode clock input
38 SUB CD7 →P to W subcode bits (3-state)
39 VSS2 GND supply (digital) of CD7
40 V5 CD7 →versatile output pin of CD7
41 V4 CD7 →versatile output pin of CD7
42 V3 CD7 →versatile output pin of CD7 (open drain)
43 KILL CD7 →kill output; programmable (open drain)
44 MISC CD7 →C2 error flag; output only defined in CD-ROM modes (3-state)
45 DATA CD7 →NPC serial data output (3-state)
46 WCLK CD7 →NPC word clock output (3-state)
47 VDD2P +3.5 supply (digital) of CD7
48 SCLK CD7 →NPC serial bit clock output (3-state)
49 VSS3 GND supply (digital) of CD7
50 CL4 CD7 →4.2336MHz µP clock output
51 SDA µP →CD7 µP interface data I/O line (open drain output)
52 SCL µP →CD7 µP interface clock line
53 RAB µP →CD7 µP interface R/W and load control line
54 SILD µP →CD7 µP interface R/W and load control line
55 NC no connection
56 VSS4 GND supply (digital) of CD7
57 RESET µP →CD7 power-on reset input (active low)
58 STATUS CD7 →µP servo interrupt request line/CD7 status register output (open drain)
59 VDD3C +3.5 supply core (digital)
60 C2FAIL CD7 →indication of correction failure (open drain)
61 CFLG CD7 →correction flag output (open drain)
62 V1 →CD7 versatile input pin
63 V2 →CD7 versatile input pin
64 LDON CD7 →HF-preamp laser drive on output (open drain)
3-2 3-2
CS 46 442

SM5856A1F – COMPRESSION-TYPE ANTI-SHOCK MEMORY CONTROLLER (NPC)
Pin Name Direction Description
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
1 VDD +3.5 supply voltage
2 UC1 µP interface extension I/O line 1
3 UC2 µP interface extension I/O line 2
4 UC3 µP interface extension I/O line 3
5 UC4 µP interface extension I/O line 4
6 UC5 µP interface extension I/O line 5
7 NTEST1 +3.5 test input1
8 NTEST2 +3.5 test input2
9 CLK CD7 →NPC 16.9344MHz clock input
10 VSS GND ground
11 YSRDATA CD7 →NPC audio serial data input
12 YLRCK CD7 →NPC audio serial L/R clock input
13 YSCK CD7 →NPC audio serial bit clock input
14 ZSCK NPC →DAC audio serial bit clock output
15 ZLRCK NPC →DAC audio serial L/R clock output
16 ZSRDATA NPC →DAC audio serial data output
17 YFLAG →NPC signal processor IC RAM overflow flag
18 YFCLK GND crystal-controlled frame clock input
19 YBLKCK NPC →µP subcode block clock signal output
20 RESET µP →NPC system reset input (active low)
21 ZSENSE NPC →µP µP interface status output
22 UC6 µP interface extension I/O line6
23 YDMUTE GND forced mute input
24 YMLD µP →NPC µP interface latch clock input
25 YMDATA µP →NPC µP interface serial data input
26 YMCLK µP →NPC µP interface shift clock input
27 OE NPC →DRAM OE control output (active low)
28 CAS NPC →DRAM DRAM CAS control output (active low)
29 D2 NPC ↔DRAM DRAM data input/output 2
30 D3 NPC ↔DRAM DRAM data input/output 3
31 D0 NPC ↔DRAM DRAM data input/output 0
32 D1 NPC ↔DRAM DRAM data input/output 1
33 WE NPC →DRAM DRAM WE control output (active low)
34 RAS NPC →DRAM DRAM RAS control output (active low)
35 A9 NPC →DRAM DRAM address output 9
36 A8 NPC →DRAM DRAM address output 8
37 A7 NPC →DRAM DRAM address output 7
38 A6 NPC →DRAM DRAM address output 6
39 A5 NPC →DRAM DRAM address output 5
40 A4 NPC →DRAM DRAM address output 4
41 A0 NPC →DRAM DRAM address output 0
42 A1 NPC →DRAM DRAM address output 1
43 A2 NPC →DRAM DRAM address output 2
44 A3 NPC →DRAM DRAM address output 3
3-3
CS 46 443

MPC1718 – 4-STAGE PWM SERVODRIVER
Pin Name Direction Description
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
1 Hin2 →servo driver power supply for H-bridge output section 2
2 Hout2A servo driver →disc motor H-bridge PWM output 2A
3 DCout2 DC/DC converter 2 →LC-filter connects H-bridge DC/DC converter 2 to LC-filter
4 Vin +A power supply for servo driver
5 DCout1 DC/DC converter 1 →LC-filter connects H-bridge DC/DC converter 1 to LC-filter
6 Gnd1,2 GND ground for H-bridge section 1 and 2
7 Hout1A servo driver →focus servo H-bridge PWM output 1A
8 Hin1 →servo driver power supply for H-bridge output section 1
9 Hout1B servo driver →focus servo H-bridge PWM output 1B
10 Vout servo driver →PWM output of DC/DC converter of VLG power supply
11 DTC →servo driver dead time control pin (used to set duty value of Vout output)
12 FBout servo driver →feedback for DC/DC converter of VLG power supply
13 INM →servo driver inverting input for DC/DC converter of VLG power supply
14 INP →servo driver non-inverting input for DC/DC converter of VLG power supply
15 VBias servo driver →bias stabilizing capacitor connection pin for DC/DC converter
16 Vd servo driver →+S power switch output pin of servo driver
17 S.Gnd GND ground for internal logic of servo driver
18 Vref servo driver →+1.2 band-gap reference voltage output of servo driver
19 VG +VG →servo driver gate drive power supply for output transistor,
power is supplied by using the Cg pin to form a charge pump.
20 Cg servo driver →charge pump step-up capacitor connection
21 Vreg servo driver →+1.8 regulator output pin
22 Cosc servo driver →sawtooth waveform output, synchronized to the clock
23 Sync →servo driver external clock input for separate excitation
24 Power µP →servo driver power control pin (low-active)
25 Hout3B servo driver →track servo H-bridge PWM output 3B
26 Hin3 →servo driver power supply for H-bridge output section 3
27 Hout3A servo driver →track servo H-bridge PWM output 3A
28 Gnd3,4 GND ground for H-bridge section 3 and 4
29 DCout3 DC/DC converter 3 →LC-filter connects H-bridge DC/DC converter 3 to LC-filter
30 Vin +A power supply for servo driver
31 DCout4 DC/DC converter 4 →LC-filter connects H-bridge DC/DC converter 4 to LC-filter
32 Hout4A servo driver →slide servo H-bridge PWM output 4A
33 Hin4 →servo driver power supply for H-bridge output section 4
34 Hout4B servo driver →slide servo H-bridge PWM output 4B
35 Lim2,4 +LF input pin, limits LC-filter output voltages of sections 2 and 4
36 Vinp3 CD7 →servo driver control input pin, receives track servo signals from CD7
H-bridge output is controlled by voltage between this pin and Vc
37 Vinp4 CD7 →servo driver control input pin, receives slide servo signals from CD7
H-bridge output is controlled by voltage between this pin and Vc
38 VLG +3.5 power supply for motor control circuit
39 S.Gnd GND ground for internal logic of servo driver
40 Vc DR_REF reference voltage for motor control circuit
41 Vinp2 CD7 →servo driver control input pin, receives disc motor control signals from CD7
H-bridge output is controlled by voltage between this pin and Vc
42 Vinp1 CD7 →servo driver control input pin, receives focus servo signals from CD7
H-bridge output is controlled by voltage between this pin and Vc
43 Lim1,3 +LF →servo driver input pin, limits LC-filter output voltages of sections 1 and 3
44 Hout2B servo driver →disc motor H-bridge PWM output 2B
3-4
CS 46 444

4-14-1
CS 46 445
Temp. detectionCharge control
Accu measuring part
Voltage doubler+3.5V DC/DC Converter
Voltage doubler (x4)
7921
74HCU04 GND
Vcc
14 13 12 11 10 9 8
7654321
Explanation of itemnumber extentions:
Supply: +AEXT.DC 4,5-5,5V
NJM2903
85
4
1
FROM/TO CONTROL PARTFROM/TO SIGNAL PROCESSING PART
switch
Inner-
motor
motor
Disc-
Slide-
Track
Focus
Supply: +3,5, +VG, +VLG Supply: +S, +1,2
no extension ... common itemnumbers
A ..................... charge circuit
B ..................... LCD illumination
C ..................... play-key illumination
D ..................... cord RC prepared
E ..................... digital out (optical)
F/G/H/K .......... DRAM-size/Audio compression
(see table on signal processing part)
X ..................... component only forseen (not in use)
% .................... tolerance of resistor is 1%
POWER
POWER
T_ACCU
Focus-
Focus-
Focus+
Focus+
POWER
ACCU_IN
DC_ON
CHG_ON
PWM_OUT PWM_IN
U_CHG
REF_ON U_BATT
Track+
Track+
Track-
Track-
DM-
DM-
DM+
DM+
Sldm-
Sldm-
Sldm+
Sldm+
L=temperature too high
DC IN
COMP
7950 H 9
7922 L 4
7921 K 6
7920 L 5
7320 B 9
7288A C13
7287A D13
7286 C12
7285 D12
7284A D11
7283A C11
7282A D 5
7281 D 4
7281 D15
7279A D 5
6953X K 3
6952 M12
6951 M 5
6251 B 2
6250 B 2
5953 I14
5952 J14
5951 J 9
5950 I 9
5921 J 5
5920 J 4
3951 G10
3950 G10
3935 K 3
3934 M10
3933 M 9
3932 L 9
3931 L 9
3930 L 9
3927 L 8
3926 K 8
3925 K 4
3924 L 3
3923 L 3
3922 L 3
3910 K 4
3299 C16
3298 E14
3297 C14
3296A E14
3295A B10
3294 C 9
3293A C 8
3292A B 9
3291 B 8
3290 D14
3289 C14
3287A D11
3286A D 6
3285A D 5
3284 C 5
3283 C 5
3282A C 4
3281A D 4
3280 D 3
3279A D14
3278A D13
3277A C13
3276A C13
3275 D12
3274 C12
3273 C12
3272A C11
3271A D11
3270A C11
3263 C 3
3262 C 3
3255 C 3
3254 C 3
2963 M10
2962 M13
2961 M13
2960 M11
2959 M12
2958 M 5
2957 M11
2956 I 8
2955 I15
2954 J15
2953 J 8
2952 I 8
2951 J15
2935 J 8
2931 M 9
2930 L 9
2927 L 8
2926 K 7
2925 K 4
2924 J 4
2923 L 3
2922 L 4
2921 J 3
2920 J 2
2919 C 1
2918 D1
2822 F12
2816 F11
2465X M11
2283 D14
2282 C15
2281 C 5
2280A C 4
2255 C 6
1950 K17
1280A B 5
1250 C 2
45671 8 9 10 11 12 13 14 15 16 17 1823
K
J
I
H
G
F
E
D
C
B
A
M
L
K
J
I
H
G
F
E
D
C
B
A
M
N N
L
45671 8 9 10 11 12 13 14 15 16 17 1823
BAS216
6250
6952
BAT54
SB10-05
6251
6953X
SB10-05
+3.5
+3.5
+1.8
+LF
+VLG
+VG
+DC
+VG
+VLG
+S
+DC
+3.5
+S
+1.2
+A +A
+A
+LF
+A
+A
+3.5
+3.5
3262
10k
3951
3k9 3950
10k
3910 680R
3287A
8k2
3263
47k
3255
47k 3254
10k
3280
100k
3932
6k8
3931
56k
3930
1k
3925
10R
3924
56k
3922 8k2%
3923 1k5% 3927
1M 3926
1M
3933
1M
3934
470
3281A
10k
3282A
100k
3285A
2R2
3286A
2R2
3283
2k2
3299
10k
3291
5k6
3293A
10k
NTC
3294
5k6 3292A
8k2
3295A
22k
3284
22k
3290
10k
3272A
100k
3270A
470k
3271A
10k
3273 100k
3274 100k
3275
22k
3278A
22k 3277A
100k
3276A
100k
3279A
33k
3296A
22k
3297 470k
3298
12k
3289
2k2
3935
0R05
2283
2n2
100n 2255
15n
2822
15n
2816
150n 2951
100n 2959 2960 100n
2930 100n
100n 2958
2924
22n
2922 100n
1n
2927
2920 100n
2925
100p
1u
2956
150n 2935
1n
2961
2931
1n
2280A
330p
2281
100n
2282 100n
2919 100n
2918 220p
NJM2903
7281
8
6
57
ESD
HF
SD
A
4
1
3
27281
NJM2903
NJM2903
7320
4
6
57
7922
2SD1623T
7282A
2SD1623T 7284A
BC848 7285 BC848 7287A BC848
BC848
7279A
U_CHG
REF_ON
U_BATT
PWM_IN
T_ACCU
ACCU_IN
CHG_ON
FOCUS_IN
DM_IN
TRACK_IN
POWER
DC_ON
INNERSW
SLIDE_IN
DR_REF
PWM_OUT
4u7
2963
2923 100u
2926
1u
2921 100u
4u7
2954
4u7
2955
2u2
2957
2u2
2962
4u7
2952
4u7
2953
2u2
2465X
+LF
GND
+S
+DC
+3
+A
BC858
7286 BC858 7288A
7283A
BC858
1280A
ESE11SH1
Batt. detection
BAT54S6951
6521
89
10 11
7921
74HCU04
12 13 43
7950
MPC1718
20 22
11
3
5
31
29
1
8
33
26
2
44
7
9
32
34
27
25
13 14
43 35
6 28
12 17
23
39
2119
3842 41 3637
1815
40
16
4 30
10 24
Hout4B
DC/DC-Con.
Hout1B
saw
PWM
Oscillator
Sawtooth
driver
driver
Pre-
Pre-
VG
VG
Vreg
POWER CONTROL
Vin
Oscillator
Clock
CL
Cosc
saw
Gnd3,4
DCout4
Hout3B
DCout3
Hout3A
Hout4A
Sync
Hin3
Hin4
Hout2B
Vout
Hin2
Deadtime-
control
DCout2
Hout2A
DCout1
Hout1A
Hin1
Vin
CL
CL
CL
Vc
Vc
saw
saw
motor-
driver 1
H-Bridge-
driver 2
motor-
H-Bridge-
saw
VLG
VLG
Vin
Vin
Lim2,4
Lim1,3
VG
VG Vc H-Bridge motor driver 3
FOR_CPU
switch
Power
VLG
REG.
VREF
Vin
Vin
Abs.-
Amp.
Lim2,4
VG
CL
Charge-
pump
driver
Cg
saw
CL
VG
Lim1,3
Vin
VLG
driver 4
motor-
H-Bridge-
Vc
Vin
Gnd1,2
VLG
Vinp4 Vinp3
Lim2,4
Feedback out
INM Lim1,3 INP VBias Vinp1 Vd Vinp2
S.Gnd
Vc
S.Gnd
PWM-SERVODRIVER
4-STAGE
2 x LR6
BATT+
BATT-
consig
1250
HEC3600
330u
5921
100u
5950
D73F
33u
5951
D73F
33u 5952
LQHN4
100u5953
LQHN4
20u
5920
5CA
7920
2SK1717
FM-B
1950
1
2
3
4
5
6
7
8
9
10
M M
INNERSW
FROM AUDIO PART
TO AUDIO PART, CONTROL PART and
SIGNAL PROCESSING PART
SUPPLY/SERVODRIVER PART
CDM 12.3BLC
DISC DRIVE
Supply voltages:
+A ........... battery or external DC voltage
+S ........... switched voltage +A
+DC......... stabilized external DC voltage
+3.5 ......... stabilized voltage of DC/DC-converter
+1.2 ......... reference voltage (only if power on)
AZ7562.................... A+B+D+H+K
AZ7565.................... A+B+D+E+H+K
AZ7566.................... A+B+C+D+H+K
Set description:
11.9V
13.8V
3.0V
3.0V0.8V
0.8V
11.9V
8.0V
5.2V
5.2V
4.5V
4.5V
3.2V
0V
5V
3,5V
0,7V1,2V0,6V
0,6V
0,7V
4.6V
4.4V
4.6V 4.6V
4.4V
910
11
12
12
200kHz
200kHz
3V
0
-3V
2,5V
0
-2,5V
during focus search
TB=0.1s
9
12
10
11
servo in or
disc motor cw
not moving
servo out or
disc motor ccw
PLAY-mode, DBB off
DC-voltages measured in
Set supplied via AC/DC-adaptor
EVM
V
200kHz

4-2 4-2
CS 46 446
HF DROP-OUT DETECTOR (not in use)
Optical digital output
(not on all versions)
FROM/TO CONTROL PART
Vref
Laser
Monitor
Laser
Monitor
+Vreverse
D1 D2
D3
R1 R2
Photodiode-array
Vg
Vdd
Vddl
Lo
Mi
Adj
C LS
HG
Vrf
Vrfe
LDon
I1
I2
I3
I4
I5
I6
O1
O2
O3
O4
O5
O6
HF Amplifier
TO AUDIO PART
CDM 12.3BLC
DISC DRIVE
FROM / TO SUPPLY/SERVODRIVER PART
SEL1
DRAM-size/Audio compression
SEL2 DRAM COMP
0 0
0
01M 8M1
1
1 1 4M 8M
4BIT
4BIT
5BIT
5BIT
SEL2 SEL1
14
5
8TDA1308
YFLAG
YFLAG
YFLAG
PORES
PORES
YMCLK YMDATA
YMLD
ZSENSE
SBSY
SBSY
CL4
CL4
Hf
Hf
SEL2
SEL1
RAS RAS
RAS
DD2 DD2
DD2
DD3 DD3
DD3
DD0 DD0
DD0
DD1 DD1
DD1
WE WE
WE
A9
A9
A9
A5
A5
A5
A6
A6
A6
A7
A7 A7
A8
A8
A8
A4 A4
A4
A0
A0
A1
A1
A2
A2
A3
A3
WCLK
WCLK
TREB
AMB
AMB_ON
DATA
DATA
SCLK
SCLK
R1
R1
R2
R2
D3
D3
D2
D2 D1
D1
R1
R2
D3
D2
D1
A0
A1 A2 A3
5800 from resonator to crystal
3812 from 1M to 100k
3848 from 0R05 to 330R
Changes for digital-out (E):
to 7830, pin63
220p
3x
220p
3x
+REF
+Vreverse
3905X E 4
3904X E 4
3903 D 4
3902 F 4
3901 F 4
3900 D 3
3869 G21
3868 G21
3867 F21
3866 E21
3865E L21
3864 A 8
3863 A 9
3862 A 8
3861 A 8
3860 A 8
3859F F17
3858G F17
3856H F17
3855K F17
3854 D15
3853K B21
3852 D21
3850 F17
3849 F15
3848 J11
3847 H 9
3846 J19
3845 J19
3844 J19
3842 J12
3841 K 8
3840 D10
3839E J14
3837E M19
3836E M20
3835E M20
3834 J10
3833 E 8
3832 J 7
3831 I 9
3830 C 8
3828 M 6
3827 J14
3826 E15
3825 C14
3822X D 7
3821 M 6
3820 M 4
3819 M 4
3818 L 5
3817 L 5
3816 K 4
3815 K 4
3814 K 5
3813 K 5
3812 J11
3808 G 8
3807 G 8
3806 G 8
3805 F 8
3804 F 8
3803 E 8
3800 F 3
3405 C11
3342 J11
2982X J 5
2981X I 4
7984X I 6
2980X I 3
2902 D 4
2901 D 3
2855 I20
2853K B21
2852 D21
2850 H17
2845 K 9
2844 K12
2843 K11
7983X I 6
2842E K10
2841E K11
2839E M21
2838 E 8
2837 E 8
2836 J 9
2835 J 9
2834 I 8
2832X J 7
2831 D 7
7982X I 5
2829 J 8
2827 J14
2826 D15
2825 D14
2824 C12
2821 M 5
2820 M 4
2819 M 4
2818 L 5
2817 L 5
7981X I 4
2815 L 4
2814 K 5
2813 K 5
2808 F 9
2807 F 8
2806 F 8
2805 G 9
2804 G 8
2803 G 8
2802 H 7
7980X J 3
2801 H 7
2800 F 3
2405 D10
1830E M21
1800 E 2
7901 F 4
7852K C18
7851 E18
7850 F18
7832E M19
7831E L20
7830 E12
7820 K 3
7820 M 5
7800 D 6
5800 K11
3987X I 6
3986X J 5
3985X I 5
3984X I 4
3983X J 4
3982X I 3
3981X I 3
3980X J 3
4 51 6 7 8 9 10 11 12 13 14 152 16 17 18 19 20 21 223
J
I
H
G
M
F
E
D
C
B
A
L
K
J
I
H
G
M
F
E
D
C
B
A
L
K
4 51 6 7 8 9 10 11 12 13 14 152 16 17 18 19 20 21 223
3834 0R05
3405
22k
3852
22R
3853K
22R
3836E
100k
3837E
100k
3835E
22k
8k2% 3828
2k2
3842
22R
3865E
1k
3839E
0R05 3848
22k
3831
22R
3841
3849
22k
0R05
3858G
0R05
3859F 10k
3855K
10k
3856H
3987X
10k
3985X
1k5
3984X
6k8
3981X
5k6
3982X
390
3986X
4k7
3980X
1k
3983X
1k
8k2% 3821
22R
3850
4R7
3825
1k
3819
3k3
3820
3902
6k8 3901
12k%
1k
3800
3900
10R
22k
3822X
2k2
3817
2k2
3813
220
3815
3816
330
3814
2k2
2k2
3818
1k5
3832
2k2
3342
1M
3812
22R
3833
10R
3830
270k
3847
3804
10k
3805
10k
3806
10k
3807
10k
3808
10k
3803
10k
3826
22R
22R
3827
100
3846
100
3845
100
3844
3903
120k%
68k
10k
3854
22k
3860
22k
3861
22k
3864
22k
3862
22k
3863
3840
2k2
1k
3866
1k
3867
1k
3868
1k
3869
INNERSW
INNERSW
ESD
SD
SD
SD
SD
SD
SD
SD
SD SD
SD
DD
SD
SD SD
SDSD
SD
SDSD
HF
HF
SDSD
DA DA
SD
DADADA
DADA
HF
HF
HF
HF
HF
HFHF
HF
HF
HF
HF
HF
HF
DA DA
SD SD SD
HF
HF
SD
SD
SD
SD
SD
HF
DA
SDSDSDSDSDSD
SD
SD
2405 100n
2852
33n
2853K
33n
2837
33n
2802 560p 2801
1n5
2982X
1n
2981X
22n
1u
2821
330n 2819 2820
33n
2902
10n
3n3
2817
3n3
2813
18n
2815
1n5
2814
2818
3n3
22p
2841E
2842E
22p
2829
2n2
22n
2836
47p
2835
10n
2834
82p
2832X
2803 2804 2805
2806 2807 2808
100n 2827 2825
100n
100n
2850
2824
33n
33n
2855
100n 2826
4p7
2843
4p7
2844
DC_ON
DC_ON
+3.5
+3.5
+3.5
+3.5
+3.5
+3.5
+3.5
+3.5
+3.5
+3.5+3.5
+3.5
+3.5
+3.5
+3.5
+3.5
+3.5
+3
DC_ON
INNERSW
CL16
AMB_ON
TREB
YMCLK YMDATA YMLD ZSENSE STATUS SBSY SCL SDA PORES RA SILD
DM_IN
FOCUS_IN
TRACK_IN
SLIDE_IN
DR_REF
SRDA
LRCLK
CLK
AMB
CL4
7851 MT4C4001JDJ-7
13 14
15 16 17 18 22 23 24 25
1 26
2 3 4 5 9
10 11 12 A2
A0 A1
VCC
A3 A9 RAS
WE
I/O2 I/O1
CAS I/O3 I/O4
GND
OE
A6 A4 A5 A8 A7
4M BIT (1M x 4) DRAM
7852K MT4C4001JDJ-7
13 14
15 16 17 18 22 23 24 25
1 26
2 3 4 5 9
10 11 12 A2
A0 A1
VCC
A3 A9 RAS
WE
I/O2 I/O1
CAS I/O3 I/O4
GND
OE
A6 A4 A5 A8 A7
4M BIT (1M x 4) DRAM
BC848
7832E
7984X
BC848
BC858
7831E
7983X
BC858
7982X
BC858
7981X
BC858
7980X
BC858
8
7820
TDA1308
6
5
7
4
7820
TDA1308
2
3
1
5800
CSA8.46MHz
1830E
GP1F366T
1 2
3
2845
47u
2u2
2800
4u7
2901
2838
47u
47u
2831
2839E
22u
2u2
2980X
3 2
1
100k
3904X 3905X
7800
TDA1302
10
11
1213
14
15
16
17
18
19
1
20
21
22
23
24
2
3
4
5
6
7
8
9
7901
BC848
FM-B
1800
1
2
3
4
5
6
7
8
9
10
SAA7372
7830
10
11
12
13
14
15
16
17 18 19
1
20 21 22 23 24 25 26 27 28 29
2
30 31 32
33
34
35
36
37
38
39
3
40
41
42
43
44
45
46
47
48
49
4
50515253545556575859
5
6061626364
6
7
8
9
PINS
MICROPROCESSOR
V1...VV5
INTERFACE
DETECT
PEAK
KILL
MOTO2
MOTO1
WCLK
VDD2P
SCLK
SBSY
SFSY
VSS2
MISC
DATA
RCK
SUB
KILL
V5
V4
V3
VSSA1
VSSA3
SELPLL
HFIN
Vref
D3
D2
D1
VSSA2
VRH
IREFT
R2
R1
D4
VRL
VDDA1
ISLICE
DIGITAL
DEMOD.
CORRECTION
ERROR
PROC.
PRE-
EFM
PLL
CONTROL PART
CONTROL
FUNCTION
SRAM
FLAGS
TIMING
CONTROL
MOTOR
INT.
EBU
ADDR.
RAM
VERSATILE
OUTPUT
STAGES
FO SILD SL RAB
TEST3 SCL
SERIAL DATAAUDIO
VDD1P
LDON
INTERFACEPROCESSOR SDA
DOBM SUBCODE CL4PROCESSOR
VSS1
VSS3
ADC
IREF FRONT END V2 VDDA2 V1 TEST1 CFLG
CRIN C2FAIL
CROUT VDD3C
TEST2 STATUS CL16 RESET CL11
HFREF
VSS4
RA NC
7850
SM5856AF
10
11
12 13 14 15 16 17 18 19
1
20 21 22
23
24
25
26
27
28
29
2
30
31
32
33
343536373839
3
4041424344
4
5
6
7
8
9
VSS
CLK
TEST2
TEST1
UC5
UC4
UC3
UC2
UC1
VDD
YSRDATA
INPUT
INTERFACE
BUFFER
ENCODER
INPUT
DRAM INTERFACE
CONTROL
SHOCK
ATTENUATOR
INTERFACE
DECODER
OUTPUT
OE
CAS
D2
D3
DO
D1
WE
YMDATA
YMCLK
YMLD
YDEMUTE
YSCK ZSCK ZLRCK
ZSRDATA
YFLAG YFCLK
YBLKCK
YLRCK CONTROL I/O EXTENSION
RESET
ZSENSE
UC6 CONTROLLER I/F
A2
A1
A0 A4 A5 A6 A3 A7 A8 A9
RAS
SIGNAL PROCESSING PART
Explanation of itemnumber extentions:
no extension ... common itemnumbers
A ..................... charge circuit
B ..................... LCD illumination
C ..................... play-key illumination
D ..................... cord RC prepared
E ..................... digital out (optical)
F/G/H/K .......... DRAM-size/Audio compression
(see table on signal processing part)
X ..................... component only forseen (not in use)
% .................... tolerance of resistor is 1%
Supply voltages:
+A ........... battery or external DC voltage
+S ........... switched voltage +A
+DC ......... stabilized external DC voltage
+3.5 ......... stabilized voltage of DC/DC-converter
+1.2 ......... reference voltage (only if power on)
AZ7562.................... A+B+D+H+K
AZ7565.................... A+B+D+E+H+K
AZ7566.................... A+B+C+D+H+K
Set description:
3.5V
ESA off 2.1MHz ESA on 4.2MHz
PDM outputPDM output
1.7V
3.5V
3.5V
16.9MHz 3.5V
1.9V
1.7V1.7V1.7V1.7V1.7V
1.7V
1.7V
1.7V
1.7V
1.7V 1.7V
1.7V
3.5V
3,4V
H = Laser on
1V
3.0V
3,4V
0V
0V
0V
0V
0V
3,4V
3,4V
3,4V
3.4V
3.4V
3.5V
765
2
3
4
8
1
ESA off = 3.5V
ESA on = 0V
3V
0
servo out or disc motor cw
not moving (f=530kHz)
servo in or disc motor ccw
16
14
3V
0
13
15
eye-pattern signal ESA on 6.5ms
ESA off 13ms
> 800 mVpp
TB=0.5µs TB=5ms
1 8
DATA
WCLK left channel right channel
SCLK
TRANSFER OF AUDIO SAMPLESVIA SERIAL INTERFACE OF CD7 AND NPCCD7 →NPC
NPC →DAC
2
3
4
5
6
7
MSB
LSB
MSB
LSB
PLAY-mode, DBB off
DC-voltages measured in
Set supplied via AC/DC-adaptor
EVM
V