Philips MCM-906 Service Manual

DVD Micro System MCM906

TABLE OF CONTENTS

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

Specification

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

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

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

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

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

Disassembly Diagram ...................................................3-1

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

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

VFD Display Board .............................................................5

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

Layout diagram ........................................................... 5-2

Prepositive Board ................................................................6

Circuit diagram ........................................................... 6-1

Layout diagram ........................................................... 6-2

AMP Board ..........................................................................7

Circuit diagram ........................................................... 7-1

Layout diagram ........................................................... 7-2

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

2008

Headphone,Button&AUX Board Diagram ...........................8

LAMP Board ....................................................................... 9

TUNER Board ...................................................................10

Circuit diagram ......................................................... 10-1

Layout diagram ......................................................... 10-2

Decoder Board ...................................................................11

Circuit diagram ..............................................11-1 to 11-4

Layout diagram ..............................................11-5 to 11-6

Explode View ................................................................12-1

Service Partlist ....................................................13-1 to 13-2

Factory Partlist ..................................................13-3 to 13-11

DB 0831

3141 785 33070

Location of PC Boards

BUTTON BOARD

ECO POWER BOARD
(12/05version)

1-1

VOLTAGE SELECTOR BOARD
(98version)

SCART BOARD
(12/05version)

AMP BOARD

LAMP BOARD

AUX BOARD

TUNER BOARD

VERSION VARIATIONS

:

Type /Versions:

Board in used:

Service policy

BUTTON BOARD
DISPLAY BOARD

AXU BOARD
M-boy BOARD
DECODER BOARD

AMP BOARD

HEADPHONE BOARD

LAMP BOARD
PREPOSITIVE BOARD

ECO-POWER BOARD

Type /Versions:

Features

Feature diffrence

RDS
VOLTAGE SELECTOR
ECO STANDBY - DARK

TDS

* TIPS : C -- Component Lever Repair.

M -- Module Lever Repair

-- Used

HEADPHONE BOARD

/12

/05

M
C

M
M
M
C
M
M

C
M

/12

/05

/37

/37

/55

/55

PREPOSITIVE BOARDDISPLAY BOARD

/58

/58

MCM906

/61

MCM906

/61

/79

/79

DECODER BOARD

/93

/94

/93

/94

/96

/96

/98

/98

Specification

1-2

AMPLIFIER

Rated Output Power ............................75W x 2 RMS

Signal-to-noise ratio .................................

Frequency response ......... 40Hz + 3dB+/-3 20KHz

Aux Input ......................................0.5V RMS 47kohm

65 dBA

DISC

Laser Type .......................................... Semiconductor

Disc Diameter ............................................ 12cm/8cm

Support Disc ......................................................MP3,

CD-DA,CD-R,CD-RW

Audio DAC ....................................... 24Bits / 44.1kHz

Total Harmonic Distortion ..................... <0.5%(1kHz)

Frequency Response ..........20Hz + 0.5dB+/-2 20KHz

S/N Ration .................................................... ≥65dBA

TUNER

FM Tuning Range.............................87.5 – 108 MHz

Tuning grid ............................................100K/50KHz

Sensitivity

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

– Stereo, 50dB S/N Ratio ................................ 100uV

Selectivity ........................................................ >33dB

Image Rejection .............................................. >25dB

Total Harmonic Distortion ................................... <1%

Signal to Noise Ration .................................. >65dBA

SPEAKERS

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

Speaker Driver, base................................................5 1/4"

Speaker Driver, tweeter ............................................Φ 25

Frequency Response ...................40Hz + 3dB+/-3 20KHz

GENERAL INFORMATION

Total Output power ..................................... 1 5 0 W RMS

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

Operation Power Consumption ................................. 85W

Standby Power Consumption .....................................<4W

Eco Standby Power Consumption ..............................<1W

Headphone Output ................................ 2X15mW 32ohm

USB Direct ...................................................... Version 1.1

Dimensions

– Main unit (w x h x d) ............................275x126x250mm

– Speaker box (w x h x d) ....................186x300x222.5mm

Weight

– With Packing ...................................................16.5 KG

– Main Unit .............................................................. 5.0KG

– Speaker box .................................................... . 4.5x2KG

Specifications and external appearance are
subject to change without notice.

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

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.Put in the Software CD Disc or USB,when it is loading
Waiting a minute,till hear a long ding voice. Software
upgrade finish.

Software check

Press the “display” button quartic continuously on remote control,
display showing as below:

Vxx dyyyy

2-1

Malfunction follow check chart

2-2

Disassembly Diagram

3-1

-1

A,Loosen screws as below sketch map to
open the top cabinet:
1,screws:3x6BMTT(3PCS)
2,screws:3x6FMTT(2PCS)

1

2

E,Loosen screws as below sketch map to
remove the Decoder Board:
1,screws:3x10PA(1PCS)
2,screws:3x6BM(2PCS)

3,screws:3X6PMTT(1pc)

B,Loosen screws as below sketch map to
remove the both sides panels:
1,screws:3x6PA(6PCS)
2,screws:3x10PA(2PCS)

1

2

C,Loosen screws as below sketch map to
remove the DVD mechanism bracket:
1,screws:3x12BA(2PCS)
2,after loosed the screws, push the DVD mechanism
bracket breadthwise to remove it

1

Aluminium Top Cover

DVD mechanism bracket

F,Loosen screws as below sketch map to
remove the Prepositive Board:
1,screws:3x6PA(2PCS)

D,Loosen screws as below sketch map to
remove AMP board:
1,screws:3x10PA(1PC)
2,screws:3x10PA(4PCS)

1

2

G,Loosen screws as below sketch map to
remove the Display Board:
1,screws:2.6x6BB(10PCS)

3

H,Loosen screws as below sketch map to
remove the USB Board:
1,screws:3x6PA(1PC)

1

1

1

2

I,Loosen screws as below sketch map to
remove the LAMP Board:
1,screws:2.6x4BB(2PCS)

1

1

Block Diagram

4-1

4-1

AUX1

AUX2

IC:TEA5766

AUX1 IN

AUX2 IN

TUNER

BLOCK

J8

TUNER-RIN

TUNER-LIN

CD5V

CD DECODE

Decoder
Board

BLOCK

D-FL

D-FR

CD

MECHANISM

REM-SENSOR

REM1GND2Vcc

3

D-FR

D-FL

AUX1 IN

AUX2 IN

TUNER-RIN

TUNER-LIN

SDA

SCL

CPU5V

+12V

VFD701

PT16311

IC201

CPU

9228

U8

PT2314

U12

VFD

24C02

STANDBY

U6

CPU5V

MUTE

STANDBY

CPU5V

FL

FR

KEY

CONTROL

FL

FR

AMP Board

TL027

IC1

FR

FL

12AX7

Q1 / Q2

VFD Board

+vs

-vs

-vs

+vs

FL

TDA8920

FR

IC300

Prepositive
Board

7812

U1

FRONT

SELENIUM

FILTER

CD5V

CPU5V

FM+5V

CES2307

DVD POWER

SWITCH

CONTROL

POWER
SWITCH

CONTROL

AOZ1212

CD ON/OFF

-vs

+vs

AMP

SELENIUM

FILTER

DVD

SELENIUM

FILTER

POWER

SWITCH POWER

AC

Wiring Diagram

4-24-2

5-1 5-1

VFD Display Board --Circuit Diagram

VFD201
MCD190VFD

CORD201
CORD

190-2

R202

4.7/0.5

C202

104

VF11VF12S13S24S35S46S57S68S79S810S911S1012S1113S1214S1315S1416S1517S1618S1719G120G721G822G923G1024G1125G326G227G428G529G630VF231VF2

S1

S2

G1G2G3G4G5

+5V

LED

R209
47K

C207

S4S5S6S7S8S9S10

S3

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

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

G6G7G8

37

38

39

G7

G6

S11

G9

36

G8

S20/G9

uPD16311

S12

G10

35

S19/G10

IC201

S13

34

VEE

-28V

33

S16

S17/G12

S17

S16

30

G1

G7

G8G9G10

S13

S14

S15

S1327S1428S1529S16

S12/KS12
S11/KS11

S14

S15

S17

G11

31

32

Vdd

S18/G11

S10/KS10

S9/KS9
S8/KS8
S7/KS7
S6/KS6
S5/KS5
S4/KS4
S3/KS3
S2/KS2
S1/KS1

Vdd

G11

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

G2G3G4G5G6

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

SW11SW22SW33SW44DOUT5DIN6IC7CLK8STB9KEY110KEY211KEY312KEY4

47uF

13

C208
104

32

R201

4.7/0.5

S4

PLAY

S2

D201
4148

D202

S3 KS3

4148

D203

S1

4148

C201

K4
K3
K2

K1

104

SW212

KS2

KS1

S201

REMOTE

SW201

CH-

R206

10

SW202

STOP

SW203

CH+

REM1GND2Vcc

3

S-BASS

SW205

MODE

SW204

TU+/PREV

SW210

DSC

P-EQ

C205
104

TU-/NEXT

R207

47

C206

47u

SW206

OPEN/CLOCS

SW207

G1B2A

3

VF2

-28V
VF1

V-GND

RT-B
RT-A

+5V
REM
CLK

DATA

STB1

RT-B
RT-A

C203
103

CN201

1
2
3
4
5
6
7
8
9
10
11

11P

C204
103

R211
10K

R212

4.7K

R213
10K

STB1
CLK
DATA

33K

R214

R215 33K

R216 33K

R217 33K

R01 4.7K

K1

K4
KS1
LED
LED++5V

CN2

1
2
3
4
5

5P