Philips MCD-759-D Service Manual

DVD Micro Theatre

MCD759D

all versions

TABLE OF CONTENTS

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

CD Playability Check .............................................................1-2...1-4

Technical specification ...................................................................2-1

Service tools ................................................................................. 2-1

Service measurement setup ..........................................................2-2

Disassembly diagram.............................................................3-1...3-6

Software version check and upgrading .........................................4-1

Block diagram ................................................................................5-1

Wiring diagram .............................................................................6-1

VFD Board

circuit diagram ..........................................................................7-1

layout diagram .......................................................................... 7-2

AMP Board

circuit diagram ..........................................................................8-1

layout diagram .................................................................8-2...8-3

©

Copyright 2007 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.

Tuner Board

circuit diagram. .........................................................................9-1

layout diagram ..........................................................................9-2

Power Board

circuit diagram. .......................................................................10-1

layout diagram ..............................................................10-2...10-3

DVD MPEG Board

circuit diagram. ............................................................. 11-1...11-5

layout diagram ........................................................................11-6

CPU Board

circuit diagram. .......................................................................12-1

layout diagram ..............................................................12-2...12-3

Spare partslist....................................................................13-1...13-2

Supplier Original partslist

Published by LX 0728 Service Audio Subject to modification

Version 1.0

3141 785 31970

SERVICE AIDS

1-1

Service Tools:

Universal Torx driver holder .................................4822 395 91019

Torx bit T10 150mm ...........................................4822 395 50456

Torx driver set T6-T20 .........................................4822 395 50145

Torx driver T10 extended .....................................4822 395 50423

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

!

.

Compact Disc:

SBC426/426A Test disc 5 + 5A ...........................4822 397 30096

SBC442 Audio Burn-in test disc 1kHz .................4822 397 30155

SBC429 Audio Signals disc .................................4822 397 30184

Dolby Pro-logic Test Disc ....................................4822 395 10216

ESD

CLASS 1

LASER PRODUCT

Lead free

CD PLAYABILITY CHECK

Customer complaint

"CD related problem"

check playability

1-2

Set remains closed!

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

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

4 is recommended

Standard repair procedure

N

Y

clean the lens

check playability

playability

ok ?

check "EYE-Pattern"

4

Y

N

5

return set

add Info for customer

"SET OK"

return set

1 - 7

For description - see following pages

2

replace Signal Processor

return set

EYE-Pattern

ok ?

Y

check Laser current

Laser current

ok ?

Y

check CD Drive offsets

Y

CD Drive offsets

ok ?

N

replace CD Drive

6

return set

N

replace CD Drive

7

return set

N

replace CD Drive

return set

CD PLAYABILITY CHECK

1-3

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 ≥10seconds

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

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 B4-No2”, available with codenumber
4822 389 10026.

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.

3

FAST LENS CLEANING (dry brush)

Use lens cleaning CD

SBC AC300 ...........................................9082 100 00043

Insert the lens cleaning CD, press PLAY and follow the
voice guide´s instructions on the CD.

Sanyo DA12T3

CD Drive

A

A

F

C

B

E

C

D

E

VCC

B

VREF

F

D

9

10

11

12

13

14

15

16

1800

+5V_HF

VrefCD10

A

D

E

B

C

F

GND

8

E

D

A

B

C

F

Laser power control

100n

2878

470n

2876

3821

1R

1K

3823

2880

33p

+5V

BC807-40

7879

3817

47R

3820

4R7

47R

3819

1n

2879

2877

47u

1

8

4

7811-A

LM358D

3

2

10K

3822

47R

3818

2841

100n

47n

2869

+5V_HF

LASER DIODE

U >250mV

->Laser damaged !

4,6V

3V

3,3V

3,9V

2V

0,17V

0,17V

Sanyo
DA12T3

HF-Amplifier

D3

D2

D1

680R

3905

3903

3K3

BC847B

7877

47n

2818

1K5

3902

5

7

4

2

1

6

3

64

8

9

10

11

470R

3893

+3.3V

2K2

3908

10K

3923

BC847B

7878

BC847B

7876

4n7

2813

3896

100R

220u

2885

2881

560p

47n

2887

560R

3901

2883

470n

2817

4u7

3n3

2814

3898

220R

3895

27K

470n

2884

+3.3V

3909

820R

3907

100R

3920

33K

3897

2882

82p

3K3

3904

2K7

3899

3906

470R

+5V_HF

HFIN

VrefCD10

100p

28152816

22n

LDON
to 3826,3827

VREF GE

VDDA1

VRIN

VSSA1

ISLICE

LD

ON

D1

D2

D3

D4

HFIN

HFREF

IREF

CD_DA: 0V / CD_RW: 3V

Σ (A-D)

800mVpp

TB = 0.5µs/div

EYE-PATTERN

1,8V

1,2V

2,4V

2,6V

0,65V

CD PLAYABILITY CHECK

1-4

5

EYE-PATTERN SIGNAL – JITTER MEASUREMENT

Measure the signal on the input of the Signal processor
using an analog oscilloscope. Please find the exact
measuring point in your Service Manual.

See below examples of the signal. Amplitude should read at
least 700mVpp using SBC444A.

6

CD DRIVE – LASER CURRENT MEASUREMENT

The laser current can be measured as a voltage drop on a
resistor. The resistor is marked in every Service Manual.
The value depends on the type of CD drive.

typical value most probably defect

VAMxxxx : 150-230mV ≥350mV
MCDxx : 170-230mV ≥300mV
DA1x : 210-250mV ≥350mV
DA2x : 175-200mV ≥250mV
Use SBC444A (CD-DA) for measurement.

If the oscilloscope shows a signal like the ‘bad’ one, and/or
the amplitude decreases within 1 minute - the CD drive has
to be replaced.

good

bad

7

CD DRIVE – OFFSET MEASUREMENT

The photodiodes of the CD-drive may have an offset. These
offsets have to be compensated by the signal processor.
High offsets can lead to poor playability of some CDs
(skipping tracks).

To measure the offset values, start the Service Test
Program - section “Focus Test” without a CD.

The offsets can be measured with a DC Millivoltmeter
directly on the connector (see drawing below). Pin
numbering varies from drive to drive.

The values from diode A-D should read 0±10mV.
Diodes E and F are less critical.

If one of the offsets is higher than ±10mV the CD drive has
to be replaced. Otherwise replace the Signal Processor.

TECHNICAL SPECIFICATIONS

2 - 1

SYSTEM

Power supply ......................................... 120 V / 60 Hz

Total output power ................................................480W

L, R Front ..................... 50Wx2 at 1KHz, THD 1%

L, R Rear ...................... 50Wx2 at 1KHz, THD 1%

Center ........................ 140Wx1 at 1KHz, THD 1%

Subwoofer ................ 140Wx1 at 63Hz, THD 1%

AUX input sensitivity .....................................  550mV

Channel Separation .............................................  40dB

Distortion ....................................................................... 0.7%

DVD

Frequency response ........... 100Hz-20kHz (±2dB)

Video output ................................................................1 V

Horizontal definition...................................  500 (TV)

Dimensions ...............................................................................

.......................... 232 (W) x 75.5 (H) x 227 (D) mm

Weight ........................................................................ 1.75 kg

AMPLIFIER

Rated output power (THD = 10%) ..........................

...................................... 4x75W (4)+2x150W (8)

Frequency response ........... 100Hz-20kHz (±2dB)

S/N Ratio ................................................................... 60dB

Loaded impedance ........................................... 8 /4 

Dimensions ...............................................................................

.......................... 232 (W) x 75.5 (H) x 235 (D) mm

Weight ............................................................................ 3.8kg

TUNER

FM Frequency range .......................... 87.5-108 MHz

FM Noise limit sensitivity ........................... 

20μ V/M

FM S/N ........................................................................  46dB

AM Frequency range .......................... 520-1710 kHz

AM Noise limit sensitivity ........................  3.0 mV/m

AM S/N ......................................................................  40dB

SPEAKERS
Front Speakers

System .......................................................... 2-way shielded

Impedance .......................................................................... 4 

Speaker drivers ...................... 2x4” woofer, ribbon tw

Dimensions (w x h x d) ......................................................

.................................... 223 mm x 1012 mm x 223 mm

Weight........................................................................ 12.95 kg

Center Speaker

System .......................................................... 2-way shielded

Impedance .......................................................................... 8 

Speaker drivers ..................................... 4” woofer, 2” tw

Dimensions (w x h x d) ......................................................

P-P

........................................... 392mm x 144 mm x 67 mm

Weight........................................................................... 2.45 kg

Surround Speakers

System .......................................................... 2-way shielded

Impedance .......................................................................... 4 

Speaker drivers ............................. 1 x 3” woofer, Pieze

Dimensions (w x h x d) ......................................................

.......................................... 144 mm x 250 mm x 50 mm

Weight.............................................................................. 2.6 kg

SUBWOOFER

Subwoofer (not magnetically shielded design).......

...................................................................................................... 8”

Impedance .......................................................................... 8 

Dimensions (w x h x d) ......................................................

....................................... 255 mm x 336 mm x 426 mm

Weight........................................................................... 12.6 kg

REMOTE

Distance ............................................................................... 6m

Angle ............................................................................... ± 30

0

Specifications subject to change without
prior notice

ERVICE MEASUREMENT

2 - 2

Tuner FW

RF Generator

e.g. PM5326

DUT

Bandpass

250Hz-15kHz

e.g. 7122 707 48001

LF Voltmeter

e.g. PM2534

½

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

½

Ri=50

e.g. 7122 707 89001

DUT

Frame aerial

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

CD RECORDER

Use Audio Signal Disc SBC429 4822 397 30184
(replaces test disc 3)

DUT

L

R

S/N and distortion meter

e.g. Sound Technology ST1700B

LEVEL METER

e.g. Sennheiser UPM550

with FF-filter

Use Universal Test Cassette Fe SBC420 4822 397

LF Generator

e.g. PM5110

½

Ri=50

DUT

L

R

S/N and distortion

e.g. Sound Technology ST1700B

LEVEL METER

e.g. Sennheiser UPM550

with FF-filter

DVD part

Disassembly diagram

A、 Remove bottom cover B、Remove top cover and screws 3×10PTH（4PCS） 3×8FT（2PCS）

A1、 Remove screws 2.5×7PWMTT（3PCS），2.6×5PWMTT（7PCS） B1.Remove screws 3×10FA（1PCS）

A

C、Remove around of side panel and screws 3×6BTH（4PCS） 3×6FMTT（2PCS） C1、Remove screws 3×4FMTT（4PCS）

C

B1

B

C1

D. Remove mechanism and screws 3×10PWA（2PCS）3×8PWMTT（2PCS） E、Remove back panel and screws 3×10FA（7PCS）

Disassembly diagram

3×6FMTT（1PC）

E

D

F. Remove motor and side panel G、Remove CPU board, MPEG, IC and loosen screws
And loosen screws 3×6FT（2PCS） 3×10BT（2PCS） 3×6PM（6PCS） 3×4FMTT（1PC）

F

G

H、Remove slide plank and screws 2×5PWA（2PCS）

Disassembly diagram

H

J、Disassemble top cover
J1、Loosen screws 2.6×6PT（6PCS）
J2、Loosen screws 2.6×8PT（6PCS）

I、Remove VFD board and screws 2.6×8PT（8PCS）

J1

I

J2

AMP part

Disassembly diagram

A、Remove bottom cover and screws 2.6×5PWMTT（8PCS） B、Loosen screws 3×10PTH（6PCS） 3×6BTH（4PCS）
C、Loosen 3×6FMTT（5PCS）

A

D、Remove back panel and screws 3×10FM（3PCS） 3×5FMTT（4PCS）

D

B

C

E、Remove Power board and screws 3×5BM（3PCS） F、Remove AMP board and screws 3×5BM（4PCS）

Disassembly diagram

G、Remove IC and screws 3×6BMTT（2PCS）

E

G

F

H

H、Remove the small transformer I、Remove ECO power board and loosen screws
and loosen screws 3×5BMTT（2PCS） 3×12BMTT（2PCS）

I

J、Remove AMP front board assy and screws2.6×8PT（10PCS）

Disassembly diagram

J

H、Disassemble top cover

H1、2.6×6PT
H2：2.6×8PT

H1

H2

4 - 1 4 - 1

SOFTWARE VERSION CHECK AND UPGRADING

SET BLOCK DIAGRAM

BLUE

GREEN

RED

VIDEO

S-VIDEO

BOUT

GR OUT

ROUT

V-OUT

S-V OUT

5 - 1

DVD5V

MEPG2
BLOCK

DVD

MECHANISM

REM-SENSOR

REM1GND2Vcc

3

CPU5V

VFD

PT16311

CPU5V

5 - 1

KEY

CONTROL

+Vs -Vs

FR

TDA8920

COAXIAL

OPTICAL

AUX1

AUX2

AUX1 IN

AUX2 IN

TUNER
BLOCK

IC:TEA5762

TUNER POWER

DVD ML
DVD MR
AUX1 IN
AUX2 IN
TUNER IN

D-FL

D-FRSLSR

PT2323

CEN

SW

SR
SL

CEN
SW

FL
FR

SR
SL

CEN
SW

FL
FR

SDA
SCL

CPU
9228

PT2322

24C02

STANDBY

MUTE

SUR-MUTE

STANDBY

CPU5V

FR

FL
CEN

SW

SL
SR

STBY&MUTE

CONTROL

MUTE

SUR-MUTE

TDA8920

TDA8920

TDA8920

FL

CEN

SW

SL

SR

TUNER POWER

CONTROL

TUNER ON/OFF

iPOD--DOCK

+12V

CPU5V

DVD5V

7805

AMC2576

POWER
SWITCH7812

CONTROL

DVD POWER

SWITCH

CONTROL

DVD ON/OFF

+Vs-Vs

AMP

SELENIUM

FILTER

DVD

SELENIUM

FILTER

POWER

TRANSFORMER

AC

SET WIRING DIAGRAM

6 - 1

6 - 1

CIRCUIT DIAGRAM - VFD BOARD

7 - 17 - 1

VFD701

NE-705D-1.WB

VF11VF12S13S24S35S46S57S68S79S810G111G212G313G414G515G616NC17NC18NC19NC20G721G822G923G1024G1125G1226S927S1028S1129S1230S1331S1432S1533S1634VF235VF2

36

C605

104P

S1S2S3S4S5S6S7

G2G3G4G5G6

S8

G1

G7G8G9

G10

G11

G12

S9

S10

S11

S12

S13

S14

S15

S16

C604

104P

-24V

C603

104P

C609

334P

C607

334P

R604

2.2/0.5

C610

334P

R603

2.2/0.5

C608

334P

VF2-1
VF1-1

-28V

3
2
1

CN601

2.0/3P

R613

LED601

1K

STADBY

R602

+5VS

10K
R612

47K

G1G2G3G4G5

C601

47uF

C602

104P

R61110K

40
41
42
43
44
45
46
47
48
49
50
51
52

G6G7G8

39

G5
G4
G3
G2
G1
Vdd
LED5
LED4(BBE)
LED3(POWER)
LED2(FANCT)
LED1(7507RST)
Vss
OSC

0

R615

G11

33

32

34

Vdd

VEE

S19/G10

30

31

S16

S17/G12

S18/G11

27

28

29

S14

S15
S12/KS12

S11/KS11

S13

G6

38

G7

37

G8

G10

G9

35

36

S20/G9

S13

S14

S15

S16

G12

S10/KS10

S9/KS9
S8/KS8

IC601

uPD16311

S7/KS7
S6/KS6
S5/KS5
S4/KS4
S3/KS3
S2/KS2
S1/KS1

Vdd

SW11SW22SW33SW44DOUT5DIN6IC7CLK8STB9KEY110KEY211KEY312KEY4

13

R614
0

DATA

STB1

CLK

26
25
24
23
22
21
20
19
18
17
16
15
14

S12
S11
S10
S9
S8
S7
S6
S5
S4
S3
S2
S1

R605

33K

S2
S3
S1

33K

R606

K3
K2
K1

33K

R607

+5VS
K4

33K

R608

D602

D603

D601

SW601
STADBY

4148

4148

4148

KS2
KS3

10K

R609

4K7

R601

10K

R610

K1
K2
K3
K4
KS3
KS2

K1

K2

K3

K4
KS3
KS2

SW602

TACT(NEXT)

SW604

TACT(PRE)

SW606

TACT(CH+)

SW608

TACT(CH-)

STB1
DATA
CLK
V-GND
+5VS

SW603

TACT(OPEN/CLOSE)

SW605

TACT(STOP/BAND)

SW607

TACT(PLAY/PRESET)

1
2

CN602

3

2.0/6P

4
5

SW610

SW609

LAYOUT DIAGRAM - VFD BOARD

7 - 2 7 - 2