Philips AZ-1750 Service Manual

CD Soundmachine

AZ1750

/12

CONTENTS

Version variation and technical specification .........................1-1..1-2

Service measurement setup..........................................................1-3

Service aids .................................................................................1-4

Instructions on CD playability ...............................................2-1.. 2-2

Block diagram ................................................................................3-1

Wiring diagram ..............................................................................4-1

Main/Tuner/Control board

Circuit diagram ..................................................................5-1..5-3

Layout diagram ..................................................................5-4..5-5

Exploded view diagram .................................................................6-1

Revision list ...................................................................................7-1

©

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.

Published by GD 1151 Service Audio Subject to modification

Version 1.0

3141 785 37120

VERSION VARIATION

Type /Versions:

Board in used:

Service policy

CONTROL BOARD TUNER BOARD

MAIN BOARD

Type /Versions:

Features

Feature diffrence

RDS

VOLTAGE SELECTOR ECO STANDBY - DARK

* TIPS : C -- Component Lever Repair.

M -- Module Lever Repair

-- Used

AZ1750

/12

(APMEA)

M/C M/C M/C

AZ1750

/12

KT 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

3Description

Pos.

Battery location

CABINET

Dimensions with Boxes (W x D x H): 416x131x236 mm Material ABS/HIPS Dimensions without Boxes: 416x131x236 mm (W x D x H ) Finishing:

Weight (including packing):. 1.8 kg Weight (excluding packing and batteries): 1.5kg

Unit in Mastercarton: N/A 35 Units in Dealercarton: 1 set 36

Description Pos. SPEAKER GRALLE（LIFT）

1

TOP CABINET

2

FRONT CABINET

3

BACK CABINET

4

POWER KNOB

5

DISPLAY LENS

6

TUNING KONB

7

OPEN KNOB

8

CD FUNCTION KNOB

9

DBB KNOB

10

VOL KNIB

11

FUNCTION PUSH KNOB

12

PROG KNOB

13

SPEAKER GRALLE（RIGHT）

14

CD DOOR

15

INTERCONNECTION POSSIBILITIES

33 34

Pos. Connection/Function Connector type Electrical data (input or R.O.P)

37 DC Jack 38 Aux in jack

Subscr.

39 40 41 42 43 44 45 46

ACCESSORIES :

(1) AC CORD

REMARKS :

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CD/FM/MP3-LINK

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SET SPECIFICATION

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Subscr.

General description: AZ1750- PORTABLE CD SOUNDMACHINE TUNER

LIFETIME : 5 YEARS (ACC. TO UAN-D1611) PERFORMANCE CLASSES :

TUNER

SUPPLY,

AMPLIFIER

I x x x 3

II x 4

III 5

SAFETY REQUIREMENTS:

IEC 60065:2001(SEVENTH EDITION)+AI:2005------SAFETY

RADIATION, IMMUNITY REQUIREMENTS: (EMC)

EN55013:2001+A1:2003+A2:2006;EN55020:2007 EN61000-3-2:2006+A2:2009;EN61000-3-3:2008 EN61000-4-5:2006; EN61000-4-11:2004

CLIMATIC REQUIREMENTS: (acc. to UAN-D1590) All climates: -10 C till +50 C (Functional); Set has to be pre-conditioned for 2 hour, except CD function 8 For all measurements: 25 C 9

POWER SUPPLY: MAINS (AC) operation DC (int. or ext.) operation / Backup Buffer

Voltage

Battery type: 10

selection: Selection:

See table below

Frequency: External DC: YES 12

POWER CONSUMPTION:

Standby: Less than ＜0.5W Maximum: 7 W Maximum: 14

General:

Q and R according to production division rules : Q < 1% (Major), Q < 4% (Minor) Measured according to: R < 3% (CE52)

DERIVED VERSIONS: APPROBATION

Versio

n

12

Voltage on

typeplate

230V ± 10%, 50Hz

REMARKS:

SPEAKER

BOXES

Tolerance Frequency Tuner

RECORDER CLOCK CD DCC TELEPHONE

Standby: 13

±10%

50Hz

FM,

REC.

PLAYER

6

7

11

15

16

1 2

TUNER PART

TECHNICAL description:

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CD/FM/MP3-LINK

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SET SPECIFICATION

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Subscr.

(circuitry) FM (active components) FM

RF IF

Detector Decoder

SA2111 SA2111

SA2111

QD

GENERAL part:

WAVE RANGE TOLERANCES TUNING

FM 87.5MHz - 0.3 MHz

108MHz + 0.5 MHz

1MHz 6

1MHz 7

9

10

AERIAL:

FM telescope - 540 mm 12

FM wire : N/A Execution - Rotational 180 13

INDICATORS:

Pointer stroke: Execution pointer: 14 Knob indication over: Field Strength: 15

ELECTRICAL DATA:

AM: nom. limit FM:

-3dB limiting point Amplification reserve AFC holding range Distortion (RF 1mV, f 67.5kHz) Stereo -46dB quieting

Cross-talk (RF 1mV, f 40kHz,

nom.

20 26 dBf

0 -4 dB

-

1 7 %

48 52

25 20 dB

limit

1kHz)

wave range Sensitivity for

50mW

18 24 55 122dB 22 20 50 111dB

FM

nom. lim.

noise limited sensitivity

IF

(26dB)

Image

rejectio

n

IF

rejectio

n

large

signal

f f

29 30

31

unit

V/m

V

dBf

dBf dB dB dB

mV/m

dBV/m

REMARKS:

1 2

3 4

5

8

16 17 18 19 20 21 22 23

24

25 26 27

28

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SET SPECIFICATION

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Subscr.

SUPPLY, AF-AMPLIFIER & LOUDSPEAKER (Boxes) PART:

TECHNICAL description:

Power supply Tone Control AF-Amplifier Loudspeaker Active

UTC8227 1 components Passive

2 X 8, 2W

3 components 4 GENERAL part: Aux in jack type Ø 3.5mm 5 Loudspeaker filter, high pass None 6 Loudspeaker filter, low pass None 7 Power stage protection Temperature – YES; Short circuit – YES 8 Public address No 9

INDICATORS:

Output power or VU-meter No 11 Frequency response No 12 Low power (battery) No

13

14

ELECTRICAL DATA:

TONE/EQUALIZER/DBB DSC Balance control No 15 Mechanical noise (ISO 1996) 16 Noise overall (ISO) 17

Channel difference at -46dB Type: < 3 dB 18

Hum (vol.max.-20dB to vol.min.) Limit: 2mV 19 Residual noise(volume min) Limit: 2mV 20 DBB on (Vol.max.-20dB): 100Hz, +6dB

(2dB) w.r.t. 1kHz at DBB on

DBB off (Vol.max.-20dB): 100Hz, -2dB

(2dB) w.r.t. 1kHz at DBB on

DBB has no dynamic, fixed to

6dB

22

21

Input sens.:Nom. 500 mV 23

for 50mW Limit: 600 mV 24

Line outp.: Nom. mV 25

voltage Limit: mV 26

OUTPUT POWER: Mains operation: D=10%

2 X 1W 8

Limit: -1dB 27 28 Music power (MPO) / (PMPO): (acc. to DIN45324) 29 Short term maximum output power: - (acc. to IEC 60268-15) 30 Long term maximum output power: - (acc. to IEC 60268-15) 31 Headphone output voltage/power: n.a. 32 Bandwidth FTC – 1dB at: n.a. (acc. to FTC/16/1/D/432) 33 Bandwidth DIN – 3dB at: - (acc. to IEC 60268-15) 34 Frequency response at Vol. max – 20dB:

typ. 60Hz to 20kHz (

3dB)

35 LOUDSPEAKER (output):

Low pass crossover frequency: - kHz tolerance: Hz 36 High pass crossover frequency: - kHz tolerance: Hz 37 Short term maximum output power: - W (acc. to IEC 60268-15) 38 Long term maximum output power: - W (acc. to IEC 60268-15) 39 Frequency response at: - Hz kHz 41

REMARKS:

42 27 : Measured in Tuner mode; 28: CD or Tape mode.

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Subscr.

TAPE function

General description:

3 5

6 7

Mechanical specification:

10 11 12 13 14 15 16 17 18 19

Indicators:

Recording level No 21 Play back level No 22 Tape counter No 23

Electrical data:

Bias system FM/AM 24 RIF switch No 25 Erase system FM/AM 26 Erasing damping 27 Channel separation (IEC1) 28 Track separation (IEC1) 29 Frequency response (PB) 30 SNR 250nWb/m 31 Signal/hiss 250nWb/m 32 Signal/hum 250nWb/m 33 Channel difference (PB) 34 Distortion 250nWb/m 35 ALC attack time 36 ALC release time 37 Crosstalk Between forward to reverse track 38 REMARKS: 31: * not according to PQR clause 18.5 class I 31: ** Chromium performance not fulfilled

Amplification Reserve for Tape = 1dB 2dB

For details, please see specification SH-190 of ECO-MTF-PA-SD (3140 117 14890).

: (ECO-MTF-PA-SD-MS (FE) Module)

1

8

20

2

4

9

39

5

CD-PART

: ( CD MECHAISM-DA11B3VF)(SANYO)

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Subscr.

Technical description:

Input Output Motor/control Logic control 1 Active components MMSA9258(Mitsu

BU24530 2

mi)

Passive

3 components Signal processing HF-preamplifier

Servoprocessor

4 Active components BU24530 5 Passive

6

components

Indicators/Display/Keys:

Display: Digits LCD for Track No. display 7 Keys: one 4-position slider switch, 6 tact switches on unit, 6 for CD -: Play, Stop, Previous/Search down,

Next/Search up, Program/Program review, CD-modes (Repeat/Shuffle)

8 Playability: (acc. To AR 30-05-239)

Limit Typical Testdisc 9 Wedge Eccentric

500 m 700 m 150 m 200 m TNO 1,24 of 200m disc

TNO 7,9 of SBC 444A (7104 099 24990) 10

24960)

(7104 099

11

Fingerprint No audible defect TNO 11of Subchassis 8A 12 Black dot

500 m 600 m

Skew 0.6mm No audible defect TNO 1,6 of 0.6mm skew (7104 099

TNO 13 of SBC 444A (7104 099 24990) 13

14

28260)

Bad HF track No audible defect TNO 8 of Subchassis 8A 15 Heavy fingerprint No track

TNO 10 of Subchassis 8A 16

jumps/plops

Playback position Horizontal, Normal position (Set is located on a flat surface, floor) 17

- Playback of above mentioned tracks possible without track loss or audible defects. 18

- Double black dot, max. diameter, thin/thick disk is according to PQR or AR 30-05-239)

- This unit can playback (only) CD-R or CD-RW discs. For performance specification, please refer to module specification of CD99 (3103 308 52190) Shock resistance: (acc. to AR 13-A6-CD-068)

 Z axis  X or Y axis

4.5 G 19

4.5 G 20

Acoustical noise:

Mode: Play/Pause 35 dBA max. (45 dbA in Search mode) 21 Mode: Jump (Next) 45 dBA max. 22 AUDIO part: (Measured with Audio Signals Disc-1, 7104 078 04911 on Speakers or Headphone socket with nom.

load)

Typ. Limit 23 Output level (TNO1) 24 SNR unwtd. 60 dB 48 dB 25 SNR wtd. dBA 65 dBA 57 dBA 26 Crosstalk (1kHz) 40 dB 26 dB 27 Crosstalk (10kHz) 30 dB 16 dB 28 Frequency response

Vol.max.–20dB (DBB on)

+9dB +5dB

2dB at 100Hz 3dB at 10kHz

29

THD (1kHz, -6 dB) 0.2 % 2 % 30 THD (10 kHz, -20 dB) < 1 % < 3 % 31 Channel difference 2 dB 3 dB 32 Frequency accuracy - +/-0.5 % 33 De-emphasis

15s / 50s Switchable via Subcode information

34

REMARKS:

- Amplification reserve for CD = +2dB (2dB); Ref. Level for CD is a 0dB track instead of a –6dB track.

35

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SET SPECIFICATION

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

)



01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

Subscr.

Feature Specification of MP3 CD

CODEC / COMPRESSION Format Compatibility

MP3 X

MPEG 2.5 X MP3 Pro X WMA X AAC X

Playback CAPACITY

Maximum number of

X tracks per CD Maximum number of

X albums per CD

DISC TYPE

CD-RW CD-R 8 cm 12 cm

DISC SIZE (MB

185 225 650 680 700

ISO-9660 + Joliet X Joliet X UDF (Direct CD from X ID3 X

Packet writing X

Multi-session CDDA X Multi-session MP3 X Closed session Open session Finalized disc Unfinalized disc

CDDA + MP3/WMA X MP3/WMA + CDDA X MP3/WMA + CDDA

X + MP3/WMA

CDDA + MP3/WMA

X + CDDA

Video + CDDA X CDDA + Data X MP3/WMA + Data X

35

36 37 38 39

40

41

42 43 44 45

46 47 48 49 50

51 52 53 54

55

56 57 58 59 60 61

62 63 64

65

66 67 68

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SET SPECIFICATION

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)



y

01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

BITRATE (kbps

64 -192 X 8 – 320 X Variable X

Sampling RATE (kHz

8 X

11.025 X 12 X

16 X

22.05

24 X 32 X

44.1 X 48 X 96 X

UPGRADE ABILITY

MP3 X MP3 Pro X WMA X AAC X

SOUND

Single Channel Dual Channel Stereo & joint Stereo Intensity Stereo MS Stereo

LANGUAGE SUPPORT

English X Chinese X

Playlist Compatibilit

WinAmp X Realjukebox X MS Mediaplayer X MusicMatch X

X

70 71 72

73 74

75 76 77 78 79 80 81 82

83 84 85 86

87 88 89 90 91

92 93

94 95 96 97

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SET SPECIFICATION

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e

MEASUREMENT SETUP

Tuner FM

1-3

Bandpass

LF Voltmeter

e.g. PM2534

RF Generator

e.g. PM5326

DUT

250Hz-15kHz

e.g. 7122 707 48001

Ri=50:

S/N and distortion meter

e.g. Sound Technology ST1700B

Use a bandpass filter to eliminate hum (50Hz, 100Hz) and disturbance from the pilottone (19kHz, 38kHz).

Tuner AM (MW,LW)

RF Generator

e.g. PM5326

Ri=50:

DUT

Frame aerial

e.g. 7122 707 89001

Bandpass

250Hz-15kHz

e.g. 7122 707 48001

LF Voltmeter

e.g. PM2534

S/N and distortion meter

e.g. Sound Technology ST1700B

To avoid atmospheric interference all AM-measurements have to be carried out in a Faraday´s cage. Use a bandpass filter (or at least a high pass filter with 250Hz) to eliminate hum (50Hz, 100Hz).

CD

Use Audio Signal Disc (replaces test disc 3)

DUT

L

R

SBC429 4822 397 30184

S/N and distortion meter

e.g. Sound Technology ST1700B

LEVEL METER

e.g. Sennheiser UPM550

-

Recorder

Use Universal Test Cassette CrO2 SBC419 4822 397 30069

or Universal Test Cassette

LF Generator

e.g. PM5110

Fe SBC420 4822 397 30071

DUT

L

R

S/N and distortion met

e.g. Sound Technology ST170

LEVEL METER

e.g. Sennheiser UPM550

with FF-filter

SERVICE AIDS

1-4

GB

All ICs and many other semi-conductors 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 wrist wrap with resistance. Keep components and tools also at this potential.

WARNING

GB

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

!

.

ESD

CLASS 1

LASER PRODUCT

Lead free

INSTRUCTIONS ON CD PLAYABILITY

Customer complaint

"CD related problem"

Set remains closed!

check playability

1

2 - 1

playability

ok ?

Y

Play a CD

for at least 10 minutes

check playability

playability

ok ?

Y

N

"fast" lens cleaning

check playability

playability

ok ?

N

3

N

Y

For flap loaders (= access to CD drive possible) cleaning method

4 is recommended

add Info for customer

"SET OK"

2

return set

1 - 4 For description - see following pages

Exchange CDM

INSTRUCTIONS ON CD PLAYABILITY

2 - 2

1

PLAYABILITY CHECK

For sets which are compatible with CD-RW discs

use CD-RW Printed Audio Disc....................7104 099 96611

TR 3 (Fingerprint) TR 8 (600µ Black dot) maximum at 01:00

• playback of these two tracks without audible disturbance

playing time for: Fingerprint

Black dot from 00:50 to 01:10

• jump forward/backward (search) within a reasonable time

For all other sets

use CD-DA SBC 444A..................................4822 397 30245

TR 14 (600µ Black dot) maximum at 01:15 TR 19 (Fingerprint) TR 10 (1000µ wedge)

• playback of all these tracks without audible disturbance

playing time for: 1000µ wedge 10seconds

Fingerprint 10seconds Black dot from 01:05 to 01:25

• jump forward/backward (search) within a reasonable time

10seconds

4

LIQUID LENS CLEANING

Before touching the lens it is advised to clean the surface of the lens by blowing clean air over it. This to avoid that little particles make scratches on the lens.

Because the material of the lens is synthetic and coated with a special anti-reflectivity layer, cleaning must be done with a non-aggressive cleaning fluid. It is advised to use “Cleaning Solvent

The actuator is a very precise mechanical component and may not be damaged in order to guarantee its full function. Clean the lens gently (don’t press too hard) with a soft and clean cotton bud moistened with the special lens cleaner.

The direction of cleaning must be in the way as indicated in the picture below.

2

CUSTOMER INFORMATION

It is proposed to add an addendum sheet to the set which informs the customer that the set has been checked carefully - but no fault was found. The problem was obviously caused by a scratched, dirty or copy-protected CD. In case problems remain, the customer is requested to contact the workshop directly. The lens cleaning (method 3) should be mentioned in the addendum sheet.

The final wording in national language as well as the printing is under responsibility of the Regional Service Organizations.