Philips MCD 268 User manual

DVD Micro System MCD268
TABLE OF CONTENTS
3141 785 32520
DB 0811
2008
Location of PCBS ............................................................ 1-1
Specifications ................................................................. 1-2
Measurement Setup ....................................................... 1-3
Service Aids, Safety Instruction, etc. .............................. 1-4
Instructions On CD Playability .............................. 1-5 to 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 Board ...................................................................... 5
Circuit diagram ............................................................ 5-1
Layout diagram............................................................ 5-2
Tuner Board ................................................................. 6
Circuit diagram ............................................................ 6-1
Layout diagram............................................................ 6-2
Headphone Board ............................................................ 7
Power Board ................................................................. 8
Circuit diagram .................................................. 8-1...8-2
Layout diagram............................................................ 8-3
Decode Board ................................................................. 9
Circuit diagram .................................................. 9-1...9-6
Layout diagram.................................................. 9-7...9-8
Explode View ................................................................. 10
Service Partlist ................................................................. 11
Factory Partlist ................................................................. 12

Location of PCBS
1-1
HEADPHONE BOARD
DISPLAY BOARD DECODE BOARD
TUNER BOARD
VERSION VARIATIONS
:
Type /Versions:
Features
Board in used:
MCD268
Service policy
DISPLAY BOARD
TUNER BOARD
HEADPHONE BOARD
POWER BOARD
DECODE BOARD
* TIPS : C -- Component Lever Repair.
M -- Module Lever Repair
√
-- Used
/55
/55
/58
/58
/61
/61
/79
/79
/93
/93
/94
/94
/96
/96
/98
/98
/37
/37
/12
/12
/05
/05
Feature diffrence
RDS
VOLTAGE SELECTOR
ECO STANDBY - DARK
√
√
CCC
M
M
M
M
M
M
M
M
M
M
M
M
Type /Versions:
MCD268

AMPLIFIER
Rated Output Power ..........................2 x 45W RMS
Signal-to-noise ratio........................... 65 dBA
Frequency response ........... 100Hz – 15KHz, ± 3 dB
Aux Input......................................0.5V RMS 47kohm
DISC
LaserType.......................................... Semiconductor
Disc Diameter............................................ 12cm/8cm
Support Disc ..............................................................
....DVD,DivX,CD-DA,CD-R,CD-RW,MP3-CD,WMA-CD
Audio DAC .......................................24Bits / 44.1kHz
Total Harmonic Distortion..................... <0.1%(1kHz)
Frequency Response............ 4Hz - 20kHz (44.1kHz)
S/N Ration ....................................................>65dBA
TUNER
FMTuning Range.............................87.5 – 108 MHz
Tuning grid .............................................100K/50KHz
Sensitivity
– Mono,26dB S/N Ratio..................................... 5uV
– Stereo,46dB S/N Ratio................................ 100uV
Selectivity........................................................>26dB
Image Rejection ..............................................>26dB
Total Harmonic Distortion................................... <3%
Signal to Noise Ration ..................................>65dBA
SPEAKERS
Speaker Impedance ................................................4ohm
Speaker Driver,base...................................................4.5"
Speaker Driver, tweeter .............................................. 3"
Frequency Response................................... 60 - 20 KHz
GENERAL INFORMATION
Total Output power ..................................... 90W RMS
AC Power
Operation Power Consumption................................. 52W
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)........................... 248x280x105mm
– Speaker box (w x h x d)..................... 206x170x270mm
Weight
–With Packing .....................................................10 KG
–Main Unit ............................................................1.53KG
–
–Speaker box .......................................................0.38KG
Subwoofer..........................................................2.97KG
Specifications and external appearance are
subject to change without notice.
1-2
Specifications
..............................................220V / 50Hz(/93)
...110V-127V/60Hz...220-240V / 50Hz(/98/55)

1-3
LF Generator
e.g. PM5110
Recorder
Use Universal Test Cassette CrO2 SBC419 4822 397 30069
LEVEL METER
e.g. Sennheiser UPM550
with FF-filter
S/N and distortion met
e
e.g. Sound Technology ST170
L
R
DUT
or 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
L
R
DUT
CD
Use Audio Signal Disc
(replaces test disc 3)
SBC429 4822 397 30184
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 250Hz) to eliminate hum (50Hz, 100Hz).
RF Generator
e.g. PM5326
Ri=50:
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
Use a bandpass filter to eliminate hum (50Hz, 100Hz) and disturbance from the pilottone (19kHz, 38kHz).
Ri=50:
Tuner FM
MEASUREMENT SETUP

1-4
SERVICE AIDS
GB WARNING
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.
ESD
CLASS 1
LASER PRODUCT
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 !.
Lead free

Set remains closed!
N
Y
Play a CD
for at least 10 minutes
Y
playability
ok ?
N
playability
ok ?
add Info for customer
"SET OK"
check playability
N
Y
playability
ok ?
check playability
check playability
return set
Customer complaint
"CD related problem"
"fast" lens cleaning
1
2
3For flap loaders (= access to CD drive possible)
cleaning method 4is recommended
INSTRUCTIONS ON CD PLAYABILITY
1-
Exchange CDM
1-4For description - see following pages

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
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.
4
LIQUID LENS CLEANING
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.
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.
INSTRUCTIONS ON CD PLAYABILITY
1-

2-1 2-1
Software version check & upgrade Upgrade software
MCD268 Vxx
Upgrade software Upgrade software
1.Press SYSTEM key to set to operation setup page, 1.Installing the upgrade disk, DVD player can be upgraded automatically,
2.Pressing the SYSTEM can be set to the general setting page, which display
Make the playback setting after the DVD motorized door opening automatically
2,Pressing the key of up、down,left、right to original
3.Pressing the key of left、right,up、right to original setting page, which display
4.Pressing the key of left、right,up、right to move to the “Playback” and them
3.Enter the password “811502”, TV can display the model
setup page
software date and area number
display is as below which display as bellow:
and showing OK to upgrade.
as below:
as below:
pressing OK to confirm which means OK to upgrade the “Playback”.
--Common Setting Page-- Upgrade file detected
--General setup page--
--Preference page--
TV type
Audio
Subtitle
Disc menu
Parental
Default
--Preference page--
TV type
Audio
Subtitle
Disc menu
Parental Reset
TV Display
OSD language
Screen saver
Upgrade?
Press PLAY to start
Upgrading
TV Mode
Display Language
Screen Protection
--Original Setting Page--
TV Set standard
Sound
Subtitle
Ver :
Date
Time
Region code
Aptitude remove
Upgrade?
Start by pressing PLAY
Upgrading
File copying
MCD268 / xxxx
mm dd yyyy
hh : mm : ss
x
Language Chosen by Disk
Age Controlling
Factory Setting
MPEG version check
CPU version check
1.Downloading the firmware for Philips support website
1.Keep PLAY/PAUSE and STOP buttons(on the set)while
plug in the power cord, TV screen show
2.Prepare as uploasding CD.
3.Load the CD in the CD tray.
4.TV screen shows
http://www.philips.com/support

2-2 2-2
Malfunction Check Chart

Disassembly Diagram
3-1 3-1

4-1 4-1
Block Diagram
TL072
DISPLAY BOARD
DECODER BOARD
TUNER BOARD
POWER BOARD
DECODER BOARD
IC1
IC305
IC302
IC307
IC306
IC305
IC304

4-24-2
Wiring Diagram

2
0
3X z
HM91.4
8
1
3
C p0
3 9
13
C P
03
303
X zHK
8
67.23
02
3
C p5
1 1
2
3C p5
1 223C v61/fu74
C323
104p
R336
22K
D304
4148
4
23
C
v05/fu
7
.4
2BTS
-
S
D
6
3 3BTS-SD
5
3 A
4
3
BTS-DVD 7
1
K
LC
-
DVD 61
MUTE 30
AD-L
LP 1
2
SUR-MUTE 29
AD
S
-SD
R 9
1
POWER-ON 27
SDA 26
SCL 25
TUN-ON 24
PLL-CE 23
LC-
L
LP 22
TEST
9
Vss
6
XT-OUT
7
XT-IN
8
C/EQ-CLK 32
I
D
-D
V
D 5
1
O
D
-
DV
D 41
NO-D
V
D 3
1
T
ESER 2
1
X-OUT
11 X-IN 10
Q-SDR 02
LCS
-
S
D
R 8
1
B/EQ-DAT 33
Vdd
5 3834-AD 4 KEY2 3
TREBLE/P-DET
1
A
-T
OR
1
4
BASS/KEY1
2
B-TO
R
24
EO
TM
E
R
04 KLC-SD
93 TAD-SD
8
3 1BTS
-S
D
7
3
STANDBY 31
STEREO 28
C
N
3
4
NAF
44
2
0
3C
I 82
2
9
C
S
2
MER
1BTS
K
LC ATAD
V
5
+
DVD DATA DVD CLK DVD STB DVD REM
D305 AN60
REM
5
3
3
R K
01
0
13
R 0
0
1
703R 00
1
603R 0
0
1
1
03
D 0
6N
A
4
03
C p0
0
1
3
03C p
00
1
203C p0
0
1
V5U
103L Hu01
3
03
L H
uk2.2
WS-ESOLC DNG-V
WS
-NEPO
+M
-
M
CM+ CM-
DVD TRIN
1DA
303Q 0558
203Q 0558
1
03
Q 0508
82
3
R
K
0
1 133R
K01
9
2
3
R K
1
233R
K1 033R K
1
333R
K
1
0
A 1
1
A 2
2A 3
DNG 4 A
DS
5
LCS
6
TS
E
T
7
dd
V
8
4
03
C
I 2
0
C4
2
SCL SDA
7
13
R K7.4 81
3
R K86
+5V
REM
-28V
VF1 VF2
SW1
1
SW2
2
SW3
3
SW4
4
DOUT
5
DIN
6
IC
7
CLK
8
STB
9
KEY1
10
KEY2
11
KEY3
12
KEY4
13
ddV 41
1SK
/
1S 5
1
2
S
K
/
2S 6
1
3
S
K
/
3S 7
1
4SK
/
4S 8
1
5
S
K
/
5S 91
6SK/6S 0
2
7S
K/7S 1
2
8S
K
/
8
S 2
2
9
SK/9S 32
0
1SK/
0
1
S 42
11S
K/
11S 5
2
2
1S
K/
21
S 6
2
S13 27 S14 28 S15 29 S16 30
S17/G12 31 S18/G11 32
Vdd 33
VEE 34
S19/G10 35
S20/G9 36
G8 37 G7 38 G6 39
5
G
0
4
4G
1
4
3G
2
4
2G
3
4
1G
4
4
dd
V
54
5
D
EL
6
4
)E
BB(4D
E
L
74
)
R
E
WOP
(
3
DEL
84
)T
CNAF(2DEL
94
)
T
SR70
57
(
1
DEL
0
5
ssV
15
CSO
25
50
3C
I 113
61
DPu
73
3
R K74
R341 33K
R342 33K R343 33K R344 33K
4K
3
K
2
K
1K
3
03
D 8
4
1
4
STB1 CLK DATA
1
S
2S
3S
4S
5S
6S
7S
8S
9S
1SK
+6V
1S
0
33
C p
4
01
5
03
R 5
.
0/2.2
REM
1
GND
2
Vcc
3
103S E
T
OM
E
R
SW312 SOURCE
0
1S 11S 2
1
S
S13 S14 S15 S16 G12 G11 G10 G1 G2 G3 G4 G5 G6 G7 G8 G9
2
0
3D 8
414
3SK3S
9
0
3W
S
LC/PO 0
1
3W
S YBDN
AT
S
SW307 STOP
8
3
3R K0
1
933R K
7.
4
043R K
01
3
23
R 74
5
1
3C v
61
/f
u7
4
4
1
3C 401
22
3
R 01
SW311
PLAY/PAUSE
SW308
PROGRAM
G1 G2 G3 G4 G5 G6 G7 G8 G9 G10 G11 S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11 S12 S13 S14 S15 S16 G12
603W
S
+
E
MU
LO
V
50
3
W
S -
EMU
L
O
V
U5V
STADBY MCU-MUTE
DVD ON
SDA SCL
AD1
v5+
43
3
R
K
0
1
10
3
DE
L
E
40
3
DE
L
E
303
D
EL
E
6
0
3
D
E
L E
V
6
+
2
53
R 0
65
0
53
R 06
5
9
4
3R 06
5
7
4
3R 065
VF1
1
VF1
2
G1
3
G6
4
G5
5
G4
6
G3
7
G2
8
G12
9
G7
10
G8
11
G9
12
G10
13
G11
14
S1
15
S2
16
S3
17
S4
18
S5
19
S6
20
S7
21
S8
22
S9
23
S10
24
S11
25
S12
26
S13
27
S14
28
S15
29
S16
30
VF2
31
VF2
32
1
03
DF
V
DF
V8
8
2D
CM
8
0
3R K
2
.2 90
3
R K
2
.2
5
0
3C p074 6
03
C p0
7
4
ECO POWER
4
0
3Q 0508
1
2
3
4
5
3
03
N
C 0.2/P5
703D 84
1
4
1 2 3 4 5 6 7 8 9 10
5
03
N
C 0
.
2/P01
DM DP US5V DGND H-MUTE GND HP-R HP-L AUX-L AUX-R
7003
P
J 0
7
0
3
Q 0508
663R k1
8
0
3D 8
41
4
56
3
R k7
.
4
83
3
C v
6
1/fu74
NO
BSU
1 2 3 4 5 6 7 8 9
10 11 12 13 14
7
0
3NC 0.2/P3
U5V
286R K0
1
R385 100
R386 100
R390100 R391100 R394100 R392100 R393100
00
14
83
R
1 2 3 4 5 6 7 8 9 10 11 12 13 14
603NC P4
1/
0.
2
1
2
0
1
9
7
6
3
4
5
209T 1ZB
503L H
U0
02
9
0
3Q 05
0
8
01
3
Q 0
5
08
91
3
R K1
023R K
1
873R 7
.4
8
0
3C 4
0
1
70
3
C V
53/
U0
2
2
01
3
D
401RF
-28V
1
8
3R 0
0
1
9
7
3R 0
01
1
03ZD V1.5
1
03
C M3
74
+5V VF1 VF2
DM DP US5V DGND HP-L HP-R AUX-R AUX-L H-MUTE
1 2
103NC 5.2/P2
+5V V-GND
52
3
C v61/f
u
001
2
0
9X z
HK8
6
7.
23
6
4
3C
P51
8
43
C
P401
SDA
I
C
S
O
1
OC
S
O
2
TNI
3
DNG
4 A
DS 5
LC
S 6
K
L
C 7
dd
V 8
50
9
CI 36
5
8FCP
71
3
C P
00
1
1
1
3D 84
14
ECO POWER
333C P
00
1
SCL DVD CLK DVD ON DVD STB DVD REM DVD DATA SDA STADBY MCU-MUTE V-GND USB ON DVD TRIN
633C P001 733C P0
0
1 903C P00
1
53
3
C P
0
01
4
33
C P
0
0
1
1
13C P00
1
21
3
C P00
1
GND AD1 LED1 +6V
+5V LED1
V-GND
LED2
LED2 LED2
n
o
d
s
sd on
2
03
Z
D
V6.5
MUTE
5
13
R k0
1
613R 51
3
0
3ZD v7
2
4
1
3R K01 31
3
R K
01
2
33
C P0
0
1
13
3
C
P001
2
03L hu
0
1
5-1 5-1
VFD BOARD - Circuit Diagram

5-25-2
VFD BOARD - Layout Diagram

6-1
6-1
TUNER BOARD - Circuit Diagram

6-2
6-2
TUNER BOARD - Layout Diagram

7-1
7-1
HEADPHONE BOARD

R60
1K
D4
FR157
D10
FR104
D3
FR104
D9
FR157
MOS2
1620CT
F1
3.15A 250V
X1
0.22uF/275V
D6
IN5408
D5
IN5408
D2 IN5408
D1 IN5408
C3
103P/630V
C1
221/1KV
C4
470P/50V
C10
102/1KV
C6
104/50V
C2
104/50V
MOS1
10N60C
R12
1R0
R10
1R0
R16
56R
R11
1R0
R9
1R0 R13 1R0
R2
1K
R23
10K
R8
10K
R3
1M
R14
1M R15
1M
R4
1M
7R
074 P/ V05
R25
10K R24 68K/1W
RT1
RMF72-8D13
R27
1K
R59
47K ±1%
R26
2.7K
R75
220R
R62
1/4W 2.2R
R22
1/8W 0R
R67
1/4W 2.2R
CE3
47U/50V
CE27
220U/25V
CE28
220U/25V
CE15
1000F/35V
CE19
47U/25V
L2
10UH 1/4W -12V
L4
10UH 1/4W
12V
24V
L3
7UH/4A
Q6
TL431
C16
104/50V
R54
100K R57
5.6K
X2
0.22UF/275V
R19
1R
R18
1R
T1
L1
30MH
1
2
AC1
3P/3.96VH
Y2
471/400V
Y3
471/400V
Y1
222/400V
C24
1000U/35V
C29
220U/35V
U1
1
U2A
U2B
R41
1206100K
CE4
68U/400V
CE1
68U/400V
C9
102/1KV
L8
BAND
CE25
220U/35V
C23
1C101
S24V
C5
104/50v
L9
BAND
C23
470U/35V
R99
2W/33R
1 2
SW1
NC
1
2
TEST G 12V
C22
104
6
4
85
3
7
2
LD7575
EL817
EL817
Go AMP
Go AMP
Go AMP
Go AMP
±1% ±1%
8-1
8-1
POWER BOARD - Circuit Diagram - 1

R63
7.5K
R73
2.2K
R69
1k
C11
473/100V
C12
102/50V
Q9
8050
CE11
1uf/25V
C15
334/50V
C20 100uf/16v
R74
1K
R64
7.5K
C18
563M CE16
10uf/50v
R32
47K
1
2
CN5
2P/2.5
R51
4.7K
R84
10K
1
2
3
Vss45
6
7
Vc
c
8
-
+
-
+
IC501
TL072
OUT1+ 1
GND1 2
VCC1 3
OUT2- 4
MODE2
5
IN2+
6
SGND
7
IN1+
8
IN3+
9
MODE1
10
SVR
11
IN4+
12
CIV
13
OUT3- 14
GND2 15
VCC2 16
OUT3+ 17
IC2
TDA8947J
CE21
22u/50V
Z4
4148
CE8
10u/50V
R35
100
Q4
8050
R37
10K
R72
10K
CE5
10uF/50V
C17
1uF/25V
CE13
220uF/25V
R39
22R
1
2
3
4
5
6
CN1
6P/2.0
Q3
8050
Q5
8050
C21
104/100V
C20
104/100V
Q8
8050
Q7
8050
R38
1.5K
R49
220
R33
10K
R34
10K
R56
15K
R31
10K
R53
10K
R28
22K
Q11
8050
R55
1M
R58
1/4W 10K
C13
683/100V
CE14
100U/25V
R78
10K
R79
22K
R77
1K
R66
20K
Q10
8550
1
2
CN6
2P/2.5
R76
100K
R80
2.2 R81 2.2
Z3
1/2W 12V
R71
1/4W 220K
C19
224
C50
104
CE12
2.2U/50V
R68
100R
R40
22R
24V
24V
CE26
47U/25V
T5
8550
Q12
8050
R85
330R
R87
1K
R88
330R
C14
104
CE18
220UF/25V
CE30
100UF/25V
R82
10K
R86
1K
R75
0
Go L2 -12V
R83
2.2K
STB
12V
12V
24V
STB
STB
MUTE
FR
GND
24V
GND
-12V
12V
R65
18K
24V
8-2 8-2
POWER BOARD - Circuit Diagram - 2

8-3 8-3
POWER BOARD - Layout Diagram