Philips MCD-715 Service Manual
DVD Micro theatre
MCD715
all versions
TABLE OF CONTENTS
Service Aids ..................................................................................1-1
Info. about lead-free soldering.......................................................1-1
Service Instruction ........................................................................1-1
CD Playability Check .............................................................2-1..2-3
Disassembly digram ...............................................................3-1..3-3
Software version check and upgrading .........................................4-1
Block diagram................................................................................5-1
Wiring diagram .............................................................................6-1
Tuner Board
circuit diagram ..........................................................................7-1
layout diagram..........................................................................7-2
VFD Board
circuit diagram ..........................................................................8-1
layout diagram..........................................................................8-2
©
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.
CPU Board
circuit diagram. .........................................................................9-1
layout diagram ..................................................................9-2...9-3
AMP Board
circuit diagram ........................................................................10-1
layout diagram ..............................................................10-2..10-3
MPEG Board
circuit diagram. .............................................................. 11-1..11-6
layout diagram ........................................................................11-7
Power Board
circuit diagram. .............................................................. 12-1..12-2
layout diagram ........................................................................12-3
Exploded view diagram ...............................................................13-1
Service partslist ...........................................................................14-1
Commercial partslist
Published by LX 0736 Service Audio Subject to modification
Version 1.1
3141 785 32111
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
2 -1
Set remains closed!
1
playability
ok ?
Y
Play a CD
for at least 10 minutes
check playability
playability
ok ?
Y
add Info for customer
"SET OK"
return set
N
"fast" lens cleaning
check playability
playability
N
2
ok ?
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"
EYE-Pattern
ok ?
check Laser current
4
Y
N
5
N
Y
return set
replace CD Drive
6
return set
1 - 7
For description - see following pages
replace Signal Processor
return set
Laser current
ok ?
Y
check CD Drive offsets
Y
CD Drive offsets
ok ?
N
replace CD Drive
7
return set
N
replace CD Drive
return set
CD PLAYABILITY CHECK
2-2
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 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.
11
D4
CD PLAYABILITY CHECK
2-3
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.
EYE-PATTERN
800mVpp
TB = 0.5Ps/div
HF-Amplifier
+5V_HF
3920
100R
1K5
3902
220u
2885
2,4V
7876
6 (A-D)
2881
560p
3901
560R
BC847B
1,8V
2882
2883
470n
1,2V
82p
3907
820R
3908
3903
2K2
3K3
0,65V
2884
7877
BC847B
3904
470R
3906
3K3
470n
See below examples of the signal. Amplitude should read at
least 700mVpp using SBC444A.
VrefCD10
3905
2,6V
680R
2813
4n7
+3.3V
7878
BC847B
D3
D2
D1
3898
220R
3893
470R
3896
100R
47n
2818
4u7
2817
3n3
2814
3897
HFIN
28152816
LDON
to 3826,3827
3899
CD_DA: 0V / CD_RW: 3V
2K7
+3.3V
3895
2887
10
D3
9
D2
8
D1
VREF GE
7
VRIN
6
IREF
27K
5
VDDA1
47n
4
VSSA1
3
ISLICE
33K
2
HFIN
100p
1
HFREF
22n
ON
LD
64
3909
3923
10K
Sanyo
DA12T3
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 t350mV
MCDxx : 170-230mV t300mV
DA1x : 210-250mV t350mV
DA2x : 175-200mV t250mV
Use SBC444A (CD-DA) for measurement.
Laser power control
U >250mV
->Laser damaged !
+5V_HF
LASER DIODE
3817
47R
3820
4R7
470n
2876
47R
47R
3819
3818
3,9V
2V
47n
2869
3,3V
7879
BC807-40
2877
3821
47u
3822
100n
2878
1R
10K
3823
+5V
2841
100n
4,6V
7811-A
LM358D
1
3V
1K
0,17V
3
8
2880
2
4
0,17V
2879
33p
1n
good
bad
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.
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.
CD Drive
Sanyo DA12T3
1800
VREF
VCC
E
E
B
A
C
D
F
D
A
B
C
F
GND
If one of the offsets is higher than ±10mV the CD drive has
to be replaced. Otherwise replace the Signal Processor.
16
15
14
13
12
11
10
9
8
VrefCD10
+5V_HF
E
D
A
B
C
F
E
D
A
B
C
F
Page:56
C
D
3 - 1
B
A1
A. Remove bottom cover C. Loosen screws h15FM(4PCS),and then remove the fan
Disassembly diagram
A1. Loosen screws h3$4PCS)
B. Loosen screws h10FA(10PCS),and D.Cut off 4PCS wire tic
then remove top cover and rear shuck
Page:57
H
I
I. Loosen screws h10BA(2PCS), remove bezel panel
F
3 - 2
G
E
E. Loosen screws h6PT(3PCS), remove CPU board HǃLoosen screws h6PT(4PCS), remove decode card
F. Loosen screws h8BA(1PC), remove AMP board
Disassembly diagram
G. Loosen screws h10PWA(4PCS), remove mechanism core
Page:58
L
J
3 - 3
K
J. Loosen screws 2.h8BA(8PCS), remove VFD board
Disassembly diagram
. Loosen screws 2.h8BA(3PCS), remove volume card L. Loosen screws 2.h8BA(4PCS), remove USB, earphone socket
K
4 - 1 4 - 1
SOFTWARE VERSION CHECK AND UPGRADING
TDA8947J
TDA8947J
PT2322
9228
24C02
PT2323
TUNER
BLOCK
IC:TEA5760
AUX R
AUX R IN
AUX L
AUX L IN
RED
ROUT
VIDEO
V-OUT
S-VIDEO
S-V OUT
COAXIAL
OPTICAL
GREEN
GR OUT
BLUE
BOUT
MEPG2
BLOCK
MECHANISM
DVD
STBY&MUTE
CONTROL
VFD
PT16311
REM
1
GND
2
Vcc
3
REM-SENSOR
+5V
+5V
+5V
+22V
GND
DVD +12V
AC
POWER BLOCK
STANDBY
+5V
DVD ON/OFF
TUNER POWER
TUNER IN
DVD MR
DVD ML
D-FL
D-FR
SL
SR
CEN
SW
SW
CEN
SL
SR
FL
FR
FL
FR
SW
CEN
SL
SR
CPU
SDA
SCL
FR
FL
SLSRCEN
SW
KEY
CONTROL
FR
SR
CEN
SW
SL
FL
STANDBY
MUTE
SUR-MUTE
MUTE
SUR-MUTE
FM
AUX L IN
AUX R IN
TL072
+12V
-12V
+12V
-12V
SW
5 - 1
5 - 1
SET BLOCK DIAGRAM
6 - 1
6 - 1
SET WIRING DIAGRAM
7 - 1
1234567
CN1
LOUT
ROUT
224
224
C5
C4
Q3
9014
R14
224
1K
R13
1K
INTX
C12
104
R5
4.7K
R3
1M
Q2
R2
1M
C2
9014
224
C3
R4
4.7K
R1
47
+5V
C1
22uF
LOUT
ROUT
+5V
C15
SGND
SGND
103
600R
L4
SCL
600R
L5
SDA
8
8P
223
C18
330
47uF/6.3V
C19
DZ1
3.6V
C24
22uF
Q1
+5V
R22
8050
C25
47uF
3.0V
SDA
SCL
3.0V
7 - 1
CLOCK
R16
4
10K
R8
C14
C23
5
68k
10pF
100pF
3.0V
L8
10uH
C22
6
22uF
C9
104
B2
IC1
TMUTE
VAFR
VAFL
AGND
FREQIN
C1
INTX
MPXOUT
TIFcentre
VCC
A6
D6
E6
E5
MPX
E4
B5
D5
D2
DGND
C10
B6
RFIN1
D1
103
VDD
RFIN2
C6
D3
DGND
RFGND
C5
E1
DATA
LOOPSW
A2
TEA5760UK
CLOCK
VREFDIG
BUSEN
SWPORT
VccVCO
LO2
LO1
CPOUT
R19
10R
C17
103
E2
E3
C2
B1
R6
BUS_ENABLE
SW1
4.7K
C11
103
A5
A4
L7
C13
39nH
104
C16
103
R18
100K
R15
10K
A3
A1
CLOCK
C21
R12
1M
39pF
C7
27pF
C8
47pF
74HC2G04
IC2
2Y
2A
3
2
VCC
GND
1Y
R11
10M
X1
1A
1
CIRCUIT DIAGRAM - TUNER BOARD
32.768K
C20
12pF
RFIN
C6
100pF
L1
120nH
7 - 2
7 - 2
LAYOUT DIAGRAM - TUNER BOARD
8 - 18 - 1
123
CN202
ROTA
3
MCD715-08A1
A
ENCODER
R229
0.5/0.5
C200
VFD200
NE-1300CD-3.G
123
1
2
CN501
1
2
2P/2.0
123
4
CN401
4P/2.0
VOL BLOCK
MCD715-07A1
ROTB
VGND
2
1
B
G
ENCODER800
R228
0.5/0.5W
C201
104
104
VF2
36
VF2
35
S16
34
S15
33
S14
32
S13
31
S12
30
S11
29
S10
28
S9
27
G12
26
G11
25
G10
24
G9
23
G8
22
G7
21
NC
20
NC
19
NC
18
NC
17
G6
16
G5
15
G4
14
G3
13
G2
12
G1
11
S8
10
S7
9
S6
8
S5
7
S4
6
S3
5
S2
4
S1
3
VF1
2
VF1
1
LED703
LED
R702
220
LED702
LED
R701
220
LED701
LED
R700
220
SW206
SW205
PROGRAM
SW202
SW201
OPEN
K1
K2
K1
K2
VF1-1
VF2-1
K4
-28V
3
2
1
CN001
3P
S16
S15
S14
S13
S12
S11
S10
S9
G12
G11
G10
G9
G8
G7
104P
G6
G5
C203
G4
G3
G2
G1
S8
S7
S6
S5
S4
S3
S2
S1
K3
S11
S12
26
25
S13
S13
27
S14
S14
28
S15
S12/KS12
S15
S16
G12
G11
G10
G9
G8
G7
G6
G5
G4
G3
G2
G1
S11/KS11
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
G540G4
41
K3
KS2
4148
SW209
D207 4148
D206 4148
D205
S2
S3 KS3
S1
S10
24
19
23
20
S6/KS6
S4/KS418S5/KS5
S7/KS721S8/KS822S9/KS9
S10/KS10
IC203
uPD16311
G3
G2
Vdd45LED546LED4(BBE)47LED3(POWER)48LED2(FANCT)
G1
43
44
42
USB LED
LED3
LED4
R208
4.7K
K4
SW200
D209
17
S3/KS3
49
LED2
SW207
PLAY
SW203
PRERET+
KS2
KS3
4148
S1S2S3S4S5S6S7S8S9
15
16
S1/KS1
S2/KS2
Vss
LED1(7507RST)
51
50
47K
R254
K3
STANDBY
NES
+5V
LED
LED501
㓓㡆
PRE
PRERET-
K4K3K2
R501
SW208
SW204
K4
K1
MCD715-05A1
1K
DSC
SOURCE
KS2
KS3
R258 33K
R257 33K
R256 33K
33K
R255
14
Vdd
KEY4
13
KEY3
12
KEY2
KEY1
STB
CLK
IC
DIN
DOUT
SW4
SW3
SW2
SW1
OSC
DS-STB1
11
10
9
8
7
6
5
4
3
2
1
DS-CLK
DS-DAT
52
C217
104P
+5V
LED200
ECO-POWER
R207
0
UGND
3
5
4
2
1
MCD715-10A1
D-
D+
vbus
GND
GND
J1001
USB HOST
+5V
R232
10K
R259
4K7
R231
10K
USB BLOCK
D201
L201
+5V
ECO-power
4
CN201
RO-H
LO-H
MU-H
5
2
1
4
3
L
R
MCD715-02A1
DZ200
6.2V/1W
R210
R211
10K
R204
100
R205
VF2-1
VF1-1
6
7
B200
1
3
2
C234
473M
Q208
8050
1K
R226
C232
470/16V
4001
D204
4148
200UH
R224
X
47uF
C205
COM4
GND-H
9
678
11
10
J201
PHONE3.5
15
100
-28V
C235
220U/35V
D208
FR104
10
9
BZ1
4
5
C233
8050
Q209
R227
1K
104
R203
100
4
3
2
1
CN208
TO-USB
R206
USB LED
+5V
104
C202
0
CIRCUIT DIAGRAM - VFD BOARD
+5V
REM
DS-STB1
DS-DAT
REM
+5V
ECO-POWER
GND
DS-CLK
CN?
7P
12345
6
7
C204
GND
47
47uF
104
R260
C219
3
2
Vcc
REM1GND
S200
REMOTE
MCD715-02A1
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