Philips EXP301, EXP-303, EXP-501, EXP-503 Service Manual

PRODUCT FAMILY ULTRA – MASSIVE

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...3-5

Start-up procedure ....................................................3-6...3-7

Service Test Program..............................................3-8...3-10

Blockdiagram...................................................................3-11

Circuit diagrams

Supply part ....................................................................4-1

Control part ...................................................................4-2

DSP part........................................................................4-3

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

Audio part......................................................................4-5

Printed circuit board

Componentside view.....................................................4-6

Copperside view............................................................4-7

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

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

Electrical partslist ......................................................6-1...6-4

Published by PW 0130 Service Audio Printed in The Netherlands Subject to modification

Portable CD-player with MP3-playback

CLASS 1

LASER PRODUCT

EXP301 EXP303 EXP501 EXP503

all versions

TABLE OF CONTENTS

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 (WxHxD) : 128x28x139.5mm Weight without batteries : 212g

Power supply modes

DC-in socket : 2.9-6.5V Primary batteries (2xLR6) : 1.7-3.6V Rechargable batteries (AY3362) : 1.7-3.6V

Battery lifetime

Battery level detection

Charge section (not on all versions)

Charge current : 250mA ±10% Charge time for 80% AY3362 : 4.0h nom. Charge time for 100% AY3362 : 6.0h nom. Max. charge time (µP controlled) : 7h Temperature protection : 50°C ±5°C

Current consumption CDDA-playback

Current consumption MP3-playback

Shock resistance

+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 : 2x12mW (+1/-3dB)

all other versions : 2x6mW (+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

Dynamic Bass Boost DBB

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

i.e. Sennheiser UPM550

with FF-filter

Level meter

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

22kHz 13th order

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1-2

CONNECTIONS AND CONTROLS

EXP30x

1 OPEN 2 ..........opens the CD lid

2 VOL E..........adjusts the volume

3 9 .....................stops playback, clears a program and switches

the set off

4 2; ...................switches the set on, starts playback and

interrupts playback

5 § ....................skips forward and searches forward

6 ESP.................Electronic Skip Protection prevents music

interruptions caused by shocks or vibrations

7 + ......................MP3-CD only: selects the next album or skips

forward

8 ........................display

9 – ......................MP3-CD only: selects the previous album or

skips backward

0 DBB.................Dynamic Bass Boost, selects the bass

enhancement

! MODE .............selects the different playing possibilities such as

SHUFFLE or REPEAT

@ PROGRAM .....programs tracks and lets you review the program

# RESUME.........stores the last position

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

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

$ ∞ ....................skips backward and searches backward

% LINE OUT/p ....3.5mm line out to connect

- the headphone

- the remote control

- this set to the audio input of your stereo equipment

^ 4.5V DC ..........to connect the external power supply

& ........................battery compartment

* ........................typeplate

( ........................belt clip hole

EXP50x

1 OPEN 2 ..........opens the CD lid

2 VOL E..........adjusts the volume

3 2; ...................switches the set on, starts playback and

interrupts playback

4 ESP.................Electronic Skip Protection prevents music

interruptions caused by shocks or vibrations

5 DBB.................Dynamic Bass Boost, selects the bass

enhancement

6 § ....................skips forward and searches forward

7 + ......................MP3-CD only: selects the next album or skips

forward

8 DISPLAY.........selects the track and album information for MP3-

CDs

9 ........................display

0 – ......................MP3-CD only: selects the previous album or

skips backward

! ∞ ....................skips backward and searches backward

@ RESUME.........stores the last position

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

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

# 9 .....................stops playback, clears a program and switches

the set off

$ PROGRAM .....programs tracks and lets you review the program

% MODE .............selects the different playing possibilities such as

SHUFFLE or REPEAT

^ LINE OUT/p ....3.5mm line out to connect

- the headphone

- the remote control

- this set to the audio input of your stereo equipment

& 4.5V DC ..........to connect the external power supply

* ........................battery compartment

( ........................typeplate

) ........................belt clip hole

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1-3

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FEATURES

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103PXE 303PXE 105PXE 305PXE

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ACCESSORIES

1-4

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

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

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 !

"Pour votre sécurite, ces documents doivent être utilisés par des spécialistes agréés, seuls habilités à réparer votre appareil en panne".

ESD

SAFETY

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.

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

SERVICE HINTS

REPAIR POSITION COPPERSIDE

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

1. Remove the bottom screws (6x)

2. Lift the bottom-cabinet

3. Supply the unit via external DC-socket

4. Take care that the door switch is closed during measurements

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

1. Remove the bottom screws (6x)

2. Open the CD-door

3. Lift the top-cabinet and put it backwards on the table

4. Supply the unit via the external DC-socket

5. Take care that the door switch is closed during measurements

REPAIR POSITION COMPONENTSIDE

DISMANTLING THE CD-DOOR

To dismantle the CD-door proceed as follows:

1. Dismantle bottom and printed board/drive assembly

2. Disconnect membrane keyboard (flex-foil connector on copperside of printed board)

3. Bend the cabinet leftwards downwards 1, while bending the CD-door rightwards upwards 2

The procedure appears to be tricky at first, but force needs to be applied with thumb and middle finger only. It’s just like snapping one’s fingers.

Remark: Don’t worry about applied force - both parts have a

solid design. However, do not use screwdrivers or tools like that. Sharp edges could damage hinge or cabinet part.

HANDLING CHIP COMPONENTS

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

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

TZA1024 – HF-PREAMPLIFIER AND LASER SUPPLY CIRCUIT

Pin Name Direction Description

–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

1LD HF-preamp → CD-drive current output to laser diode 2 VCCL +2.6V laser supply voltage 3 CFIL → HF-preamp external filter capacitor 4 MON CD-drive → HF-preamp laser monitor diode input 5 DIN CD-drive → HF-preamp central diode input 6 GND GND ground 7 PWRON CD10 → HF-preamp power-on select input 8 CMFB +2.6V / 2 common mode feedback voltage input

9 RFFB → HF-preamp external RF feedback resistor 10 RFEQO HF-preamp → RF amplifier output 11 CDRW CD10 → HF-preamp gain select input for CDDA/CDRW 12 EQSEL CD10 → HF-preamp equalizer/speed select input 13 VCC2 +2.6V supply voltage 14 RGADJ GND external laser supply gain adjust resistor

SC111259FTA – SERVO DRIVER & POWER MANAGEMENT IC

Pin Name Direction Description

1 SLEEP µP → servo driver sleep input

2 WAKW µP → servo driver wake input

3VR +VR reference voltage input (motor driver)

4 ERR4 CD10 → servo driver control signal input (slide error signal)

5 CF4 → servo driver phase correction capacitor connect (CH4)

6 CF3 → servo driver phase correction capacitor connect (CH3)

7 ERR3 CD10 → servo driver control signal input (radial error signal)

8 ERR2 CD10/µP → servo driver control signal input (disc speed error signal)

9 CF2 → servo driver phase correction capacitor connect (CH2) 10 CF1 → servo driver phase correction capacitor connect (CH1) 11 ERR1 CD10 → servo driver control signal input (focus error signal) 12 OUT1A servo driver → CD-drive positive drive output (CH1) 13 PGND1 GND H-bridge driver ground 14 OUT1B servo driver → CD-drive negative drive output (CH1) 15 VIN12 +A CH1 and CH2 H-bridge driver supply voltage 16 OUT2B servo driver → CD-drive negative drive output (CH2) 17 PGND2 GND H-bridge driver ground 18 OUT2A servo driver → CD-drive positive drive output (CH2) 19 OUT3A servo driver → CD-drive positive drive output (CH3) 20 PGND2 GND H-bridge driver ground 21 OUT3B servo driver → CD-drive negative drive output (CH3) 22 VIN34 +A CH3 and CH4 H-bridge driver supply voltage 23 OUT4B servo driver → CD-drive negative drive output (CH4) 24 PGND4 GND H-bridge driver ground 25 OUT4A servo driver → CD-drive positive drive output (CH4) 26 VG +VG charge pump output 27 C2H → servo driver charge pump capacitor connect 28 C1H → servo driver charge pump capacitor connect 29 C1L → servo driver charge pump capacitor connect 30 C2L → servo driver charge pump capacitor connect 31 VIN battery → servo driver battery supply voltage 32 RSTB servo driver → reset block output 33 CHGSW servo driver → charge circuit transistor drive output for battery charger 34 RS charge circuit → servo driver OpAmp non-inverting input for battery charger 35 INM2 → servo driver error amplifier inverting input 36 RF2 → servo driver error amplifier output 37 DCIN +DC DC power supply from AC/DC adaptor 38 VDET servo driver → DCIN over voltage and VIN low voltage detect output 39 VREF servo driver → Voltage reference circuit output 40 DTC → servo driver max. duty control voltage input for power management 41 VOUT servo driver → DC/DC converter PWM output for power management 42 VC → servo driver power management power supply 43 CGND GND internal ground 44 RF1 servo driver → OpAmp output for power management 45 INM1 → servo driver OpAmp inverting input for power management 46 CLK → servo driver clock input 47 OE µP → servo driver output enable for motor drivers 48 CHGON µP → servo driver charge enable for battery charger

3-1

SAA7324 – DECODER, DIGITAL SERVO IC AND D/A-CONVERTER CD10 (low voltage version)

Pin Name Direction Description

1 HFREF → CD10 comparator common mode input 2 HFIN → CD10 comparator signal input 3 ISLICE CD10 → current feedback from data slicer 4 VSSA1 GND analog ground 1 5 VDDA1 +2.6V analog supply voltage 1 6 IREF CD10 → reference current output pin 7 VRIN CD10 → reference voltage for servo ADC’s 8D1 CD-drive → CD10 unipolar current input (central diode signal input)

9D2 CD-drive → CD10 unipolar current input (central diode signal input) 10 D3 CD-drive → CD10 unipolar current input (central diode signal input) 11 D4 CD-drive → CD10 unipolar current input (central diode signal input) 12 R1 CD-drive → CD10 unipolar current input (satellite diode signal input) 13 R2 CD-drive → CD10 unipolar current input (satellite diode signal input) 14 VSSA2 GND analog ground 2 15 CROUT CD10 → X-TAL crystal/resonator output 16 CRIN X-TAL → CD10 crystal/resonator input 17 VDDA2 +2.6V analog supply voltage 2 18 LN CD10 → DAC left channel differential output - negative 19 LP CD10 → DAC left channel differential output - positive 20 VNEG GND DAC negative reference input 21 VPOS +2.6V DAC positive reference input 22 RN CD10 → DAC right channel differential output - negative 23 RP CD10 → DAC right channel differential output - positive 24 SELPLL CD10 → selects whether internal clock multiplier PLL is used 25 TEST1 GND test control input 1; this pin should be tied low 26 CL16 CD10 → DSP 16.9344 MHz system clock output 27 DATA CD10 → NPC or CD10 → DSP serial data output (3-state) 28 WCLK CD10 → NPC or CD10 → DSP word clock output (3-state) 29 SCLK CD10 → NPC or CD10 → DSP serial bit clock output (3-state) 30 EF CD10 → NPC C2 error flag output (3-state) 31 TEST2 GND test control input 2; this pin should be tied low 32 KILL CD10 → kill output (programmable; open-drain) 33 VSSD1 GND digital ground 2 34 V2/V3 CD10 → NPC versatile I/O: input versatile pin 2 or output versatile pin 3 (open-drain) 35 WCLI NPC → CD10 or DSP → CD10 word clock input (for data loopback to DAC) 36 SDI NPC → CD10 or DSP → CD10 serial data input (for data loopback to DAC) 37 SCLI NPC → CD10 or DSP → CD10 serial bit clock input (for data loopback to DAC) 38 RESETn µP → CD10 power-on reset input (active low) 39 SDA µP ↔ CD10 microcontroller interface data I/O line (open-drain output) 40 SCL µP → CD10 microcontroller interface clock line input 41 RAB µP → CD10 microcontroller interface R/W and load control line input (4-wire bus mode) 42 SILD µP → CD10 microcontroller interface R/W and load control line input (4-wire bus mode) 43 STATUS CD10 → servo interrupt request line/decoder status register output (open-drain) 44 TEST3 GND test control input 3; this pin should be tied low 45 RCK → CD10 subcode clock input 46 SUB CD10 → P-to-W subcode bits output (3-state) 47 SFSY CD10 → µP subcode frame sync output (3-state) 48 SBSY CD10 → NPC subcode block sync output (3-state) 49 CL11/4 CD10 → DSP 11.2896 MHz or 4.2336 MHz (for microcontroller) clock output 50 VSSD2 GND digital ground 3 51 DOBM CD10 → bi-phase mark output (externally buffered; 3-state) 52 VDDD1P +2.6V digital supply voltage 2 for periphery 53 CFLG CD10 → correction flag output (open-drain) 54 RA CD10 → servo driver radial actuator output 55 FO CD10 → servo driver focus actuator output 56 SL CD10 → servo driver slide control output 57 VDDD2C +2.6V digital supply voltage 3 for core 58 VSSD3 GND digital ground 4 59 MOTO1 CD10 → servo driver motor output 1; versatile (3-state) 60 MOTO2 CD10 → motor output 2; versatile (3-state) 61 V4 CD10 → HF-preamp versatile output pin 4 62 V5 CD10 → HF-preamp versatile output pin 5 63 V1 innerswitch → CD10 versatile input pin 1 64 LDON CD10 → HF-preamp laser drive on output (open-drain)

3-2

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