Philips MCD-772 Service Manual

DVD Micro System MCD772

TABLE OF CONTENTS

Location of PC Boards .................................................... 1-1

Specification

Measurement Setup ....................................................... 1-3

Service Aids ................................................................... 1-4

Instruction On CD Playability .................................1-5 to 1-6

Software Version Check & Upgrade .............................. 2-1

Malfuction Check Chart .................................................. 2-2

Disassembly Diagram .........................................3-1 to 3-2

Block Diagram ................................................................. 4-1

Wiring Diagram................................................................. 4-2

Volume Board ..................................................................5-1

Display Board ......................................................................6

Circuit diagram

Layout diagram

AUX,USB&Headphone Board .............................................7

TUNER Board .....................................................................8

Circuit diagram

Layout diagram

................................................................. 1-2

........................................................... 6-1

........................................................... 6-2

........................................................... 8-1

........................................................... 8-2

2008

Power Board ........................................................................ 9

Circuit diagram ................................................. 9-1 to 9-2

Layout diagram ........................................................... 9-3

Decoder Board ...................................................................10

Circuit diagram ...............................................10-1 to 10-9

Layout diagram ...........................................10-10 to 10-11

Explode View .....................................................11-1 to 11-2

Service Partlist .....................................................12-1 to 12-2

Factory Partlist .....................................................13-1 to 13-6

DB 0839

Version 1.1

3141 785 32711

Location of PC Boards

√

1-1

AUX BOARD

VFD DISPLAY BOARD

HEADPHONE BOARD

DECODER BOARD

VERSION VARIATIONS

FAN

VOLUME BOARD

TUNER BOARD

POWER BOARD

110/220 CHANGING BOARD

:

Type /Versions:

Board in used:

Service policy

DISPLAY BOARD USB BOARD

AXU BOARD TUNER BOARD

HEADPHONE BOARD DECODER BOARD

VOLUME BOARD POWER BOARD

Type /Versions:

Features

Feature diffrence

RDS VOLTAGE SELECTOR ECO STANDBY - DARK

TDS

* TIPS : C -- Component Lever Repair.

M -- Module Lever Repair

-- Used

/05

/12

/37

/55

/58

MCD772

/61

MCD772

/61

/79

/93

C M M

M M M M M

/93

/94

/96

/98

Specification

1-2

AMPLIFIER

Rated Output Power ........................ ..2 x 50W RMS

Signal-to-nois

Frequency response .......... 50Hz - 3 dB+/-2 20KHz

Aux Inpu

e ratio ........................... 65 dBA

t......................................0.5V RMS 47kohm

DISC

LaserType.......................................... Semiconductor

Disc Diamete Suppo

DVD,DVD-R,DVD-

Audi

o DAC .......................................24Bits / 44.1kHz

Total Harmonic Distortion..................... <0.1%(1kHz)

Frequency Respons S/N Ratio

r............................................ 12cm/8cm

rt Disc ..............................................................

RW,DVD+RW,CD-DA,MP3,CD-RW

e ............50Hz - 3dB+/-2 20KHz

n ....................................................≥65dBA

TUNER

FMTuning Range.............................87.5 – 108 MHz

Tuning grid ......................................................50KHz

Sensitivity

– Mono, 50dB S/N Ratio ..................................... 5u V

– Stere

o, 46dB S/N Ratio................................ 100uV

Selectivit Imag

Total Harmonic Distortion................................... <3%

Signal to Noise Ratio

y ........................................................ >28dB

e Rejection ..............................................>25dB

n .................................. >50dBA

SPEAKERS

Speaker Impedance ................................................ 4ohm

ker Driver, base...................................................4.5"

Spea

ker Driver, tweeter .............................................. 3"

Spea Frequency Respons

e ....................50Hz -3dB+/-2 20KHz

GENERAL INFORMATION

Total Output power ..................................... 10 0 W RMS

AC Power.....................................220-230V / 50Hz/60Hz

Ope

ration Power Consumption ................................. 55W

by Power Consumption .....................................<4W

Stand Eco Stand Headphon US

by Power Consumption ..............................<1W

e Output ................................ 2X15mW 32ohm

B Direct ...................................................... Version 1.1

Dimensions

– Main unit (w x h x d) ........................... 248x280x105mm

– Speaker box (w x h x d)..................... 206x170x270mm

Weight

– With Packing ........................................................9 KG

– Main Unit .............................................................. 3.5KG

– Speaker box ........................................................3.3KG

Specifications and external appearance are subject to change without notic

e.

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

R =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

R =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

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

1-

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 t10seconds

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 t10seconds

Fingerprint t10seconds Black dot from 01:05 to 01:25

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

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.

Software Version Check & Upgrade

Upgrade software

1.Downloading the software form Philips support website

http://www.philips.com/support

2.Load the CD Disc or USB with software,when it is loading,

the TV screen showing as below:

Upgrade File detected

Upgrade? Press PLAY to start

Upgrading

Waiting half to one minute,till the TV screen showing disappear. Turnoff electrical source and reopen.

3.Press SYSTEM on the remote open menu, press Left or Right to select “Preference Page”, TV screen showing as below:

--Preference Page-TV type PAL Audio CHI English

Subtitle CHI French Disc menu CHI Spanish

Parental Chinese Japanese

Default Korean

Russian

Tjai

2-1

Press Up or Down to select “Default” on remote, Press OK to exit reset. Software upgrade finish.

Software check

Input password “811502” on remote, TV screen showing as below:

MCD772 / xxxx

Ver :

mm dd yyyy

Date

hh : mm : ss

Time Region code

x

CPU version check

1.Keep press PLAY/PAUSE and STOP buttons,plug into the power cord at one time, TV showing as below:

MCD772 Vxx

Malfunction follow check chart

2-2

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Block Diagram

4-1 4-1

MPEG

DIP 42

IC101

VFD101

Wiring Diagram

ATAD

BTS

2FV

1FV

MER

KLC

42-

5+

VFD BOARD

CN101

4-24-2

J9

-M

+M

DNG

WS_ESOLC

WS_NEPO

1FV

2FV

ETOMER

V5UPC

V72-

DNG

KLC_SD

J7

1BTS_SD

TAD_SD

A_TOR

DNG

B_TOR

+1M

-1M

J12

-DEL MOC

J15

J1

SPSP+

L MIT GND SL-

SL+

CON1

FFO/NO_BAD

DNG

J13

+5V_USB

USB+

-BSU

DNG

FAN

HEADPHONE

BOARD

ETUM

0R

0L

DNG

AC IN

VOLUME BOARD

POWER BOARD

POW181B (HIGHPASS CIRCUIT)

AGND

L0

R0

HP-MUTE

CON5

GND

LED

CON4

A_NUF

B_NUF

FAN GND

DEL

SSAB

ELBERT

CON3

DNG

V5+

V21A

CON2

J3

J6

GND

TX_IPOD/SCL RX_IPOD/SDA

POD_DET

R_ POD/BT

L_ POD/BT

AGND_IPOD/BT

DNG

A_TOR

B_TOR

POD_V DEO

I5V

33VD

DXR

DNG

DXT

MPEG BOARD

EJS89S772

J2

J5

TRACS_LDVD

TRACS_RDVD

TRACS_SBVC

DNG

#SBVC/BGR

TRACS_U/B

TRACS_Y/G

TRACS_V/R

DNG

9:61

J4

CON6

FUN_A FUN_B LED TREBLE BASS

REMOTE

D-GND A12V

+5V

D-GND ROT_A ROT_B

STB

J11

J8

TUNNER

TUOL

TUOR

1ETUM

A_DNG

YBDNATS

DNG

V22_CCV

YBDNATS

J10

J14

A_DNG

NIL_XUA

NIR_XUA

CN501

R

L

DNG

AUX BOARD

OPTICAL GND

PO_CCV

USB BOARD

SUBV

CN301

-D

+D

U-DNG