Philips MME140/77 Manual de usuario

Version 1.0

MME140/77/78

Micro System

Published by YT 0546 Service Audio Printed in The Netherlands Subject to modification

system or transmitted, in any form or by any means, electronic, mechanical, photocopying,

or otherwise without the prior permission of Philips.

Handling Chip Components .......................................................... 1-1

Service Tools................................................................................. 1-1

Leadfree and Safety Information................................................... 1-2

Technical Specification.................................................................. 2-1

Service Measurement Setup......................................................... 2-2

Alignment Instruction..................................................................... 2-3

Connections and Controls..................................................... 3-1...3-3

IC Pins Description................................................................ 4-1...4-2

Set Block Diagram ........................................................................ 5-1

Set Wiring Diagram ....................................................................... 5-2

Circuit Diagram

Combi board (Tuner/Tape/AMP) .............................................. 6-1

Combi board (CD/Display) ....................................................... 6-2

Layout Diagram

Combi board (Top view) ........................................................... 7-1

Combi board (Bottom view)...................................................... 7-2

Exploded View Diagram................................................................ 8-1

Accessories and Mechanical Partslist .......................................... 8-2

Electrical Partslist.......................................................................... 9-1

TABLE OF CONTENTS

1 - 1

HANDLING CHIP COMPONENTS

1 - 2

2 - 1

SPECIFICATIONS

GENERAL:

Mains voltage : 110-127/220-240V Switchable

Mains frequency : 50/60 Hz

Power consumption : < 20W max.

< 5W at standby

Dimension center unit : 168 x 220 x 210 mm

Dimension speaker : 120 x 220 x 200 mm

TUNER:

Tuning range : 87.5 – 108 MHz

IF Frequency : 10.7 MHz ±20kHz

Sensitivity at 26sb S/N : < 18 µV

Selectivity at 600 kHz

Bandwidth : > 45 dB

IF rejection : > 50 dB

Image rejection : > 20 dB

Distortion : < 2%

Crosstalk : > 22 dB

Tuning range : 530 – 1700 kHz

Grid : 10 kHz

IF Frequency : 455 kHz ±1kHz

Aerial input : Inner frame antenna

Sensitivity at 26sb S/N : < 4.4 mV/M

Selectivity at 18 kHz

Bandwidth : > 18 dB

IF rejection : > 45 dB

Image rejection : > 28 dB

Distortion : < 5%

AMPLIFIER:

Output power : 2 x 2 W RMS

Speaker impedance : 8 ohm

Frequency response

Within ±3dB : 60Hz – 16 kHz

Bass Boost ON : 8dB ±3dB at 60Hz

Headphone output : 32 mW ±2dB at 32 Ω

CASSETTE RECORDER:

Number of tracks : 2 x 2 stereo

Tape speed : 4.76 cm/sec +2.5/-1.5%

Wow and flutter : < 0.35% DIN

Fast-wind/rewind time : < 130 sec. With C-60

Bias frequency : 75 ±10 kHz

Frequency response (PB) : 125 – 8 kHz (8 dB)

Signal to noise radio : > 35 dB with type 1 tape

COMPACT DISC:

Number of programming track : 20

Frequency response

Within ±1.5 dB : 63 Hz – 16 kHz

Signal/Noise ratio : 50 dB/A-weighted

Distortion at 1 kHz : < 3%

Channel separation at 1 kHz : > 25 dB

2 - 2

SERVICE MEASUREMENT

Bandpass

250Hz-15kHz

e.g. 7122 707 48001

LF Voltmeter

e.g. PM2534

DUT

RF Generator

e.g. PM5326

S/N and distortion meter

e.g. Sound Technology ST1700B

Tuner FW

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

Ri=50

Bandpass

250Hz-15kHz

e.g. 7122 707 48001

LF Voltmeter

e.g. PM2534

DUT

S/N and distortion meter

e.g. Sound Technology ST1700B

Frame aerial

e.g. 7122 707 89001

Tuner AM (MW,LW)

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 250kHz) to eliminate hum (50Hz, 100Hz).

RF Generator

e.g. PM5326

Ri=50

LEVEL METER

e.g. Sennheiser UPM550

with FF-filter

S/N and distortion meter

e.g. Sound Technology ST1700B

DUT

CD RECORDER

Use Audio Signal Disc SBC429 4822 397 30184

(replaces test disc 3)

Use Universal Test Cassette Fe SBC420 4822 397 30071

LEVEL METER

e.g. Sennheiser UPM550

with FF-filter

S/N and distortion meter

e.g. Sound Technology ST1700B

DUT

LF Generator

e.g. PM5110

Ri=50

2 - 2

AM I.F. ALIGNMENT

1. Set the FUNCTION SWITCH to RADIO

2. Set the BAND SELECTOR switch to AM .

3. Connect a SWEEPSCOPE OUTPUT to AM ant Terminal.

4. Connect a SWEEPSCOPE INPUT to pin18 of IC4 TA2111N through a 1uF capacitor and ground.

STEP SET SIGNAL SET DIAL ADJUST ADJUST FOR

1 455KHz GANG OPEN IF1 (AM IF) CENTRE

& MAXIMUM OUTPUT

AM R.F. ALIGNMENT

1. Connect an RF generator to a standard radiating loop.

2. Connect a SCOPE VTVM across the speaker output.

STEP SET SIGNAL SET DIAL ADJUST ADJUST FOR

1 520KHz GANG CLOSED IF3 (AM OSC COIL)

2 1720KHz GANG OPEN PV1-D (AM OSC TRIM.) MAXIMUM

3 600KHz 600KHz L6 (AM ANT COIL) OUTPUT

4 1400KHz 1400KHz PV1-C (AM ANT TRIM.)

5 REPEAT STEPS 3 AND 4 TO OBTAIN BEST TRACKING.

FM I.F. ALIGNMENT

1. Set the FUNCTION SWITCH to RADIO

2. Set the BAND SELECTOR to FM position.

3. Connect a SWEEPSCOPE OUTPUT to pin 21 of IC4 TA2111N through a 20pF capacitor and ground.

4. Connect a SWEEPSCOPE INPUT to pin18 of IC4 TA2111N through a 1uF capacitor and ground.

STEP SET SIGNAL SET DIAL ADJUST ADJUST FOR

BALANCED CURVE

110.7MHz GANG OPEN Check WITH 10.7MHz AT

ZERO CROSSOVER

FM R.F. ALIGNMENT

1. Connect an RF generator to the FM antenna terminal and ground.

2. Connect a SCOPE & VTVM across the speaker output.

STEP SET SIGNAL SET DIAL ADJUST ADJUST FOR

1 87MHz GANG CLOSED L3 (FM OSC COIL)

2 108.5.MHz GANG OPEN PV1-A (FM OSC TRIM.) MAXIMUM

3 90MHz 90MHz L4 (FM RF COIL) OUTPUT

4 106MHz 106MHz PV1-B (FM RF TRIM.)

5 REPEAT STEPS 3 AND 4 TO OBTAIN MAXIMUM OUTPUT.

CASSETTE ALIGNMENT

1. Set the FUNCTION SELECTOR switch to TAPE.

2. Connect a Scope & VTVM across the speaker output.

3. Insert the 8KHz tape in to cassette deck and push play buttom.

4. Adjusting HEAD for speaker maximum output.

ALIGNMENT INSTRUCTION

3 - 1

CONNECTION AND CONTROLS

































3 - 2

CONNECTION AND CONTROLS

#ONTROLSILLUSTRATIONSONPAGE

#ONTROLSONTHESYSTEM4OPAND

FRONTPANELS

4ELESCOPICANTENNA

n IMPROVES&-RECEPTION

/0%.#,/3%

n LIFTSHERETOOPENTHE#$DOOR

45.).'

n TUNESTORADIOSTATIONS

02/'2%0%!4

nPROGRAMSTRACKSANDREVIEWSTHEPROGRAM

2%0%!4

nREPEATSATRACKDISCORAPROGRAM

6/,5-%ROTARY

nADJUSTSTHEVOLUME

$""$YNAMIC"ASS"OOST

nTURNSTHEBASSENHANCEMENTONOFF

4APEDECK

0/7%2

n SWITCHESTHESYSTEMONOROFF

$)30,!9

n #$ ONLYDISPLAYSDISCINFORMATION

&REQUENCYINDICATOR

n SHOWSTHERADIOFREQUENCYOFYOURSELECTED

WAVEBAND

0OWERINDICATOR

n LIGHTSUPWHENTHESYSTEMISPOWEREDON

02/'INDICATOR

n FLASHESWHENPROGRAMISACTIVE

2%0%!4INDICATOR

n FLASHESLIGHTSUPWHENREPEATMODEISACTIVE

&-34INDICATOR

n LIGHTSUPWHENSTEREO&-SIGNALISRECEIVED

0,!90!53%ÉÅ

n STARTSORPAUSES#$PLAYBACK

34/0Ç

STOPSPLAYBACKERASEAPROGRAM



n SKIPSORSEARCHESTRACKSPASSAGEBACKWARD

FORWARD

3OURCESELECTOR#$45.%24!0%

n SELECTS#$RADIOORTAPE

nn

n MMHEADPHONESOCKET

(ELPFULHINTS

n !DJUSTTHEVOLUMETOAMODERATELEVEL

BEFOREYOUPLUGINTHEHEADPHONES

n #ONNECTINGHEADPHONESWILLSWITCHOFFTHE

SPEAKERS

8"ANDSELECTOR

n SELECTSWAVEBANDS!-&-OR&-34

4APEDECKKEYS

2%#/2$âSTARTSRECORDING

0,!9STARTSPLAYBACK

2%7à&&7$á FASTREWINDSWINDSA

TAPE

34/0%*%#4 Çç STOPSPLAYBACKOR

RECORDINGOPENSTHETAPE

HOLDER

0!53%ÅINTERRUPTSPLAYBACKORRECORDING

#ONNECTINGTHESPEAKERS

5SETHESUPPLIEDSPEAKERSONLY5SINGOTHER

SPEAKERSCANDAMAGETHESETORTHESOUND

QUALITYWILLBENEGATIVELYAFFECTED

#ONNECTTHEWIRESOFTHELEFTSPEAKERTO,RED

ANDBLACKANDTHEWIRESOFTHERIGHTSPEAKERTO

2REDANDBLACKASFOLLOWS

/PENTHECLIPOFTHEREDTERMINALANDFULLY

INSERTTHESTRIPPEDPORTIONOFTHECOLOUREDOR

MARKEDSPEAKERWIRESINTOTHESOCKETTHEN

CLOSETHECLIP

/PENTHECLIPOFTHEBLACKTERMINALANDFULLY

INSERTTHESTRIPPEDPORTIONOFTHEBLACKOR

UNMARKEDSPEAKERWIRESINTOTHESOCKETTHEN

CLOSETHECLIP

7ARNING

.EVERMAKEORCHANGECONNECTIONSWITH

THEMAINSSUPPLYSWITCHEDON

3PEAKERS

!TTACHINGTHESUPPLIEDSPEAKERS

!SSHOWNBELOWALIGNTHETABSBETWEEN

THESPEAKERANDTHEMAINUNITTHENSLIDE

THESPEAKERSDOWNWARDSUNTILITLOCKSINTO

PLACE2EPEATTHESAMESTEPSTOATTACHTHE

OTHERSPEAKER

4OTAKEOFFTHESPEAKERSKEEPTHELEVERFOUND

ONTHEBACKOFTHESPEAKERPRESSEDAS

2%,%!3% SHOWNANDSLIDETHESPEAKER

UPWARDS

)NSTALLATION

110V 220V







!#POWERCORD

6X5-ORh#vSIZE

30%!+%24!"3 -!).5.)44!"3 30%!+%22%,%!3%

3 - 2

CONNECTION AND CONTROLS

4 - 1

IC PINS DESCRIPTION

LED output

LCD output

P7-2/INTR/SO2 Remocon

P7-0/SCK2/TX2 Display Select

PU Select1

P1-0/SCK1/TX1/Ctin/DATA SCK

MVDD

P6-1/S14/ADin2/IPF

P5-2/S11/LRCK

P5-1/S10/BCK

6-2/S15/ADin3/SBOK KEYAD3

P5-3/S12/AOUT Door

P7-1/SDIO2/RX2 CDRW Select

P1-1/SDIO1/RX1/SFSY PU Select0

PU Select2

MVSS

P6-3/S16/ADin4/CLCK

KE YAD2

P6-0/S13/ADin1/DOUT DOUT

Sync rec

FOO

RFGC

SEL

DMO

CVSS

DVSS

TRO

FMO

TEBC

CVDD

DVDD

DVR

TC94A29F/FAG-008

(SVFP64pin)

MCU Oscillator MCU Power supply

TEI

TEZI

SBAD

FEI

RFRP

VREF

RFZI

AVDD

RFI

SLCO

AVSS

VCOF

LPFO

TMAX

PDO

TES

LPFN

X-Bass

P8-0/MXI/OSC

/RESET

HOLD

8-1/MXO

P2-0/COM1

P2-1/COM2

P2-3/COM4

P2-2/COM3

TEST/P3-0/S1

P3-1/S2

P3-2/S3

P3-3/S4

P4-0/S5

P4-1/S6

P4-3/S8

P5-0/S9

P4-2/S7

1720242832

49 52 56 60 64

P1-3/BUZR

P1-2/SO1/SBSY

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