Philips AX-7201 Service manual

AX7201

all versions

Technical specification ......................................................1-1

Connections and controls..................................................1-2

Features ............................................................................1-3

Accessories .......................................................................1-3

Safety & Warnings.............................................................1-4

Service hints

Repair positions ............................................................2-1

Dismantling CD-door.....................................................2-1

Handling chip components............................................2-2

Service tools..................................................................2-2

Pin description of ICs.........................................................3-1

Service Test Program........................................................3-4

Blockdiagram.....................................................................3-6

Circuit diagrams

Power part.....................................................................4-1

CD part..........................................................................4-2

Control part ...................................................................4-3

Printed circuit board

Componentside view.....................................................4-4

Copperside view............................................................4-5

Exploded view ...................................................................5-1

Mechanical partslist...........................................................5-1

Electrical partslist...............................................................6-1

Document history...............................................................7-1

© 3103 785 25210

Published by PW 0246 Service Audio Printed in The Netherlands Subject to modification
Version 1.0

Portable CD-player

CLASS 1

LASER PRODUCT

TABLE OF CONTENTS

©

Copyright 2002 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

TECHNICAL SPECIFICATION

General

Dimensions (W x H x D) : 130.4 x 14.5 x 135.5mm
Weight without batteries : 125g

Power supply modes

DC-in socket : 2.9..7.0V
Primary batteries (battery box) : 1.6..3.6V
Rechargeable batteries (AY3364) : 1.6..3.6V
Voltage protection DC-in socket : -14.5..+14.5V

Battery lifetime

Battery level detection

Charge section (not on all versions)

Charge current : 280mA ±10%
Charge time for 80% AY3364 : 4.0h nom.
Charge time for 100% AY3364 : 6.0h nom.
Max. charge time (µP controlled) : 7h
Temperature protection : 50°C ±5°C

Current consumption

1)

off-phase means servos switched off and audio data is played back from
ESP memory

Shock resistance (ESP=off)
+X/-X direction : ≥2.5g

+Y/-Y direction : ≥2.5g
+Z/-Z direction : ≥2.0g

Headphone out (measured with 16Ω load, DBB/ESP=off)
Output power (THD≤10%)

/17 version only : 2x7mW (+1/-3dB)

all other versions : 2x3mW (+1/-3dB)
Frequency response (1mW) : 100Hz-20kHz within 6dB
S/N ratio (unwght) : ≥80dB (83dB typ.)
S/N ratio (A-wght) : ≥82dB (85dB typ.)
THD+N (1kHz, 1mW) : ≤1% (0.2% typ.)
Channel crosstalk (1kHz, no load): ≤-24dB (-44dB typ.)
Channel unbalance (-40dB) : ≤5dB
Volume attenuation (1kHz) : ≥60dB

Sound presets

Laser

Output power : <5mW (3mW typ.)
Wavelength : 780nm

Measurement setup

Use Audio Signal disc SBC429 4822 397 30184

Low pass filterDUT S/N and distortion meter

L

R

i.e. Sennheiser UPM550

with FF-filter

Level meter

i.e. Sound Technology ST1700Bi.e. 4822 395 30204

22kHz
13th order

TESERPDNUOS

esnopserycneuqerF

zHk36 zHk1 zHk01

1BBDBd6+ ± Bd2Bd0 ± Bd2Bd0 ± Bd2

2BBDBd9+ ± Bd2Bd0 ± Bd2Bd5+ ± Bd2

TNERRUC

NOITPMUSNOC

)V5.4(NI-CD )V52.2(YLPPUSYRETTAB

ffo=PL/PSE

no=PL/PSE

egareva

no=PL/PSE

esahp-ffo

)1

no=PSE
ffo=PL

edom-yalP.pytAm08.pytAm57.pytAm52.pytAm021

edom-pmuJ.pytAm003a/na/na/n

edom-egrahC.pytAm032a/na/n.pytAm052

yb-dnatS

)egrahcer.lcxe(

.pytAm12052 µ .pytA052 µ .pytA052 µ .pytA

LEVELNOITCETED SEIRETTABELBAEGRAHCER

ytpmeyrettaB

V7.1

Vm05-/001+

1kaewyrettaB

+levelytpmeyrettab

V8.0 ± Vm001

2kaewyrettaB

+levelytpmeyrettab

V6.0 ± Vm001

3kaewyrettaB

+levelytpmeyrettab

V4.0 ± Vm001

EMITEFILYRETTAB no=PL/PSE

seirettabyramirP

60RLx2

≥ ).pyth34(h13

seirettabelbaegrahceR

)hAm006x2(4633YA

≥ ).pyth32(h61

60RLx2+4633YA ≥ ).pyth07(h94

1-2

CONNECTIONS AND CONTROLS

Portable CD-player AX7201

1 4.5V DC ..........jack for AC/DC adaptor power supply

2 EXT. BATT......jack for external battery supply

3 p/LINE OUT....connect the remote control here and your

headphones to the remote control. Insert the
supplied headphone jack adaptor (for some
versions only) first, if you want to connect the
headphones direct, or want to connect the player
to another audio input of an additional appliance.

4 OFF.................switches RESUME and HOLD off

RESUME.........stores the last position played

HOLD..............locks all buttons

5 2; ...................switches the player on, starts or pauses CD play

6 9 .....................stops CD play, clears a program or switches the

player off

7 ∞ ....................skips and searches CD tracks backwards

§ ....................skips and searches CD tracks forwards

8 +......................volume up

–......................volume down

9 • • • • 2 ............opens the CD lid

0 ........................type plate

Remote Control AY3774

1 p......................3.5mm headphone jack

2 Clip

3 HOLD..............locks all buttons

4 VOL (3,4).......adjusts the volume

2; ...................switches the set on, starts and pauses playback

∞ / § ..............skips and searches backward / forward tracks

5 9 .....................stops playback and switches the set off

6 DBB.................switches the bass enhancement on and off

7 PROG .............programs tracks and reviews the program

8 MODE .............selects the different playing possibilities

9 DISPLAY

FEATURES

ACCESSORIES

SEIROSSECCA

1027XA

c00/ 10/ z50/ 01/ 71/

00/0713YA rotpadACD/CA716019122284X

20/0713YA rotpadACD/CA676019122284X

50/0713YA rotpadACD/CA016338110413X

01/0713YA rotpadACD/CA186019122284X

71/0713YA rotpadACD/CA616019122284X

4633YA seirettabmuGelbaegrahceR106488033013 XXXXX

4643YA mm5.3(DROCIFIH → )gulp-L,hcnic188110232284 OOOOO

0833YA esacyrettablanretxE162158110413 XXXXX

00/1053YA ettessaCrotpadAraC950017932284 OOOOO

00/5453YA retrevnoCCD/CDraC330019122284 OOOOO

4773YA lortnoCetomeRDCLdroC152158110413 XXXXX

s77/545EHCBS )gulp-S(enohpraE962000012809 XXXXX

rotpadAkcaJenohpdaeH GP5.2( → )TS5.3076488033013 XXXXX

elbaliavalanoitpo...O,tesehthtiwdeilppus...X

SERUTAEF

1027XA

)snoisrevlla(

YTILIBITAPMOCELBATIRWER-DC

●

ADDCNOITCETORPPIKSCINORTCELEs54

EZISMARDPSEtibM61

NOITCNUFEMUSER/DLOH

● / ●

SEGATSBBD2

KCABDEEFCITSUOCA

●

YROMEMMARGORP99

NOITCNUFEGRAHCER

●

LORTNOCETOMERDCLDROC

●

TUPTUOLATIGID/ENIL–/–

1-3

SAFETY & WARNINGS

© 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 Puls­armband 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

s Varning !

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.

ß Varoitus !

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 Sicherheitsvor­schriften zu beachten. Der Originalzustand des Gerätes
darf nicht verändert werden. Für Reparaturen sind Original­ersatzteile 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

1-4

SERVICE HINTS

REPAIR POSITION COPPERSIDE

To get access to the copperside of the
printed board assembly proceed as follows:

1. Remove the bottom screws (4x)

2. Remove the cabinet screws (4x)

3. Lift the bottom (take care of cabinet/bottom snaps)

4. Supply the unit via external DC-socket

POSITIONING OF SPRING-OPEN

ROUTING OF CD-DRIVE WIRES

REPAIR POSITION COMPONENTSIDE

To get access to the componentside of the
printed board assembly proceed as follows:

1. Remove the bottom screws (4x)

2. Remove the cabinet screws (4x)

3. Lift the bottom (take care of cabinet/bottom snaps)

4. Lift the printed boards and flip the main board

5. Supply the unit via external DC-socket

6. Short-circuit door-switch 1409 during measurements

POSITIONING OF SPRING-CD-DOOR

Remark: The spring for the CD-door is positioned loose in

the cabinet assembly as shown in the picture
above. It will be caught in its defined position just
after mounting cabinet and bottom parts together.

2-1

HANDLING CHIP COMPONENTS

SERVICE TOOLS

Audio signal disc SBC429 4822 397 30184
Playability test disc SBC444A 4822 397 30245
CD-RW printed audio disc 7104 099 96611

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

2-2

PIN DESCRIPTION OF INTEGRATED CIRCUITS

AN8399SA – HF-PREAMPLIFIER

Pin Name Direction Description

1PD → HF-preamp input for LD output monitoring PD signals
2LD → HF-preamp external TR drive pin for driving LD
3 VCC +HF power supply
4 RFN → HF-preamp RF addition amp inverting input
5 RFOUT HF-preamp → RF addition amp output
6 RFIN → HF-preamp AGC amp input
7 LDRCTL → HF-preamp LD reference voltage control pin
8 CAGC → HF-preamp AGC loop filter connection pin

9 ARF HF-preamp → RF after AGC output
10 CEA → HF-preamp capacitor for 3T-ENV detection filter connection pin
11 3TOUT HF-preamp → 3T-ENV detection output
12 CBDO → HF-preamp capacitor for low-speed dark level BDO detection connection pin
13 BDO HF-preamp → BDO detection output
14 COFTR → HF-preamp capacitor for low-speed off-track detection connection pin
15 OFTR HF-preamp → off-track detection output
16 NRFDET HF-preamp → RF signal amplitude detection information output
17 GND GND ground pin
18 SLPSW → HF-preamp sleep mode control pin
19 VREF VREF reference voltage output (VCC / 2)
20 TEN → HF-preamp TE amp inverting input
21 TEOUT HF-preamp → track error output
22 FEN → HF-preamp FE amp inverting input
23 FEOUT HF-preamp → focus error output
24 GCTL → HF-preamp gain & APC control pin
25 FBAL → HF-preamp pin to input signal for controlling focus balance adjustment
26 TBAL → HF-preamp pin to input signal for controlling tracking balance adjustment
27 E → HF-preamp satellite diode signal input
28 F → HF-preamp satellite diode signal input
29 D → HF-preamp central diode signal input
30 B → HF-preamp central diode signal input
31 C → HF-preamp central diode signal input
32 A → HF-preamp central diode signal input

SM8613AV – LASER DIODE DRIVER

Pin Name Direction Description

1 LDISET → laser diode driver LD drive maximum current setting resistor connection

2 NC1 – no connection

3 MUTE → laser diode driver intermittent drive stop signal

4 PCK → laser diode driver intermittent control reference pulse input

5 DUTYADJ → laser diode driver intermittent duty ratio adjust resistor connection

6 FLOCK → laser diode driver intermittent drive control signal

7 NC2 – no connection

8 GND GND ground

9 PDVIN → laser diode driver laser luminosity monitor voltage input
10 NC3 – no connection
11 LDOFF → laser diode driver LD drive current control signal
12 LDIOUT laser diode driver → LD drive current output
13 VCC +2.6V supply voltage
14 RG2 laser diode driver → APC frequency response control capacitor connection
15 NC4 – no connection
16 RG1 → laser diode driver APC loop gain control resistor connection

3-1