Philips MCM700/12 User manual

Version 1.5
MCM700/12
©3141 785 31755
Micro System
Published by SL 0839 Service Audio Subject to modification
©Copyright 2008 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.
Technical specification .................................................................. 1-1
Service measurement setup ......................................................... 2-1
Service aids & Leadfree & safety information .............................. 2-2
Preparations and Controls .................................................... 3-1...3-3
Disassembly Instruction ....................................................... 4-1...4-2
Software Checking ........................................................................ 5-1
Block diagram................................................................................ 6-1
Wiring diagram ............................................................................. 6-2
VFD / Key Board Assembly
circuit diagram .......................................................................... 7-1
layout diagram.......................................................................... 7-2
CD Block
circuit diagram .......................................................................... 8-1
layout diagram................................................................ 8-2 to 8-3
Tuner board
circuit diagram. ......................................................................... 9-1
layout diagram.......................................................................... 9-2
CD / MPEG board
circuit diagram .............................................................. 10-1...10-4
AMP Block
circuit diagram.........................................................................11-1
layout diagram.........................................................................11-2
Exploded view diagram ............................................................... 12-1
Mechanical partslist........................................................... 12-2...12-3
Electrical partslist .............................................................. 13-1...13-2
TABLE OF CONTENTS
CLASS 1
LASER PRODUCT
AMP Board
circuit diagram........................................................................ 11-3
layout diagram.........................................................................11-4
Pre-AMP Board
Revision List ................................................................................ 14-1
CD Playability Checking ....................................................... 2-3...2-5

1-1
AMPLIFIER
Output power ....................................... 2 x 50 W RMS
Signal-to-noise ratio ....................................... t70 dBA
Frequency response ...... 20 Hz – 20 KHz, ± 3 dB
Input sensitivity AUX ....................... 0.5 V (max. 2 V)
Impedance loudspeakers ......................................... 4 :
Impedance headphones ........................................ 32 :
Output power headphones ....................... <50 mW
CD PLAYER
Frequency range ................................ 20 Hz – 20 kHz
Signal-to-noise ratio ............................................ 70 dBA
TUNER
FM wave range ................................... 87.5 – 108 MHz
Sensitivity at 75 :
– FM ................................................................................ 20dBf
Selectivity ................................................................. t25 dB
Total harmonic distortion ..................................... d1%
Frequency response
– FM .............................................................. 63 – 6000 Hz
Signal-to-noise-ratio
– FM ....................................................................... t50 dBA
USB PLAYER
USB ................................................................... 12Mb/s,V1.1
......................................... support MP3 and WMA files
Number of albums/folders ................. maximum 99
Number of tracks/titles ...................... maximum 400
SPEAKERS
Bass reflex system
Dimensions (w x h x d) . 145 x 230 x 215 (mm)
GENERAL INFORMATION
AC Power ..................................... 230 – 240 V / 50 Hz
Dimensions (w x h x d) . 208 x 156 x 268 (mm)
Weight(with/without speakers) ...... 4.30 / 2.31 kg
Standby power consumption ............................ <7 W
Eco power standby ................................................. <1 W
Specifications and external appearance are
subject to change without notice.
SPECIFICATION

2 - 1
SERVICE MEASUREMENT
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
Tuner FW
Use a bandpass filter to eliminate hum (50Hz, 100Hz) and disturbance from the pilottone (19kHz, 38kHz).
Ri=50
?
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 250kHz) to eliminate hum (50Hz, 100Hz).
RF Generator
e.g. PM5326
Ri=50
?
L
R
LEVEL METER
e.g. Sennheiser UPM550
with FF-filter
S/N and distortion meter
e.g. Sound Technology ST1700B
DUT
CD RECORDER
Use Audio Signal Disc SBC429 4822 397 30184
(replaces test disc 3)
Use Universal Test Cassette Fe SBC420 4822 397 30071
L
R
LEVEL METER
e.g. Sennheiser UPM550
with FF-filter
S/N and distortion mete
r
e.g. Sound Technology ST1700
B
DUT
LF Generator
e.g. PM5110
Ri=50
?

2-2
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
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
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!
Standard repair procedure
N
Y
Play a CD
for at least 10 minutes
Y
playability
ok ?
N
playability
ok ?
add Info for customer
"SET OK"
playability
ok ?
Y
N
check playability
N
Y
playability
ok ?
check playability
check playability
EYE-Pattern
ok ?
N
Y
check "EYE-Pattern"
replace CD Drive
Laser current
ok ?
N
Y
check Laser current
CD Drive offsets
ok ?
N
Y
check CD Drive offsets
clean the lens
check playability
return set
Customer complaint
"CD related problem"
return set
return set
replace CD Drive
return set
replace CD Drive
return set
replace Signal Processor
return set
"fast" lens cleaning
1
2
3
4
5
6
7
For flap loaders (= access to CD drive possible)
cleaning method 4is recommended
1- 7For description - see following pages
INSTRUCTIONS ON CD PLAYABILITY
2-3

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 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.
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.
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 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.
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
2-4

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.
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.
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.
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.
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
Drive detection
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
LDON
D1
D2
D3
D4
HFIN
HFREF
IREF
CD_DA: 0V / CD_RW: 3V
6(A-D)
800mVpp
TB = 0.5Ps/div
EYE-PATTERN
1,8V
1,2V
2,4V
2,6V
0,65V
INSTRUCTIONS ON CD PLAYABILITY
2-5

3 - 1
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1
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CR2025
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3 - 2
CONTROLS
MICRO SYSTEM MCM700
TUNER / POWER AMPLIFIER MCM700
6 3 5 % $ 7 # 9 8
2 1 ⁄ 4 º
1
#
* ! 9 ( 0 ≥ $ 8 @ % ^
∞ £ ! @ ≤ 5 § • ¡ ™ ª ) &
Controls on the system and remote control
1STANDBY-ON/ECO POWERB
– switches the system on or to Eco Power
standby/normal standby with clock display.
2Display screen
– shows the status of the system.
3?
– opens/closes the CD door.
4IR SENSOR
– remote sensor
5VOLUME -/+(VOL +/-)
– adjusts the volume level. – adjusts the hours and minutes for the clock/timer
function.
6CD Door 7S/T
for CD/MP3-CD/WMA/USB
fast searches back and forward within a track/disc (press and hold).
................................. skips to the beginning of a
current/previous/subsequent track.
89/PRESET +
– stops disc playback or erases a disc program. – (for FM; on the system only) selects a preset
radio station.
9ÉÅ/PRESET -
– starts or interrupts playback. – (for FM; on the system only) selects a preset
radio station.
0ALBUM +/-
for MP3-CD/WMA/USB skips to the
beginning of a current/previous/ subsequent album.
!5/6
for CD/MP3-CD/WMA/USB
fast searches back and forward within a track/disc (press and hold).
for FM .................. tunes to radio stations (down/
up).
@¡/™
for CD/MP3-CD/WMA/USB
................................. skips to the beginning of a
current/previous/subsequent track.
#SOURCE
– selects the respective sound source for CD/USB/
FM/AUX (1 or 2).
$PROGRAM (PROG)
for CD/MP3/USB programs tracks. for FM .................. programs radio stations.
%REPEAT/STEREO (REPEAT/ST.)
for CD/MP3/WMA/USB selects a repeat
playback mode.
for FM .................. sets stereo or mono sound
mode.
^SHUFFLE
– plays disc tracks randomly.
&TIMER
– sets the timer function.
*CLOCK
– sets the clock function.
(INTRO
for CD/MP3/WMA/USB starts scanning of all tracks.
)MUTE
– interrupts and resumes sound production.
¡DSC (Digital Sound Control)
– selects sound characteristics: POP/JAZZ/
CLASSIC/ROCK/FLAT.
™DBB (Dynamic Bass Boost)
– enhances the bass.
£DISPLAY
– selects different disc information display modes
during playback.
≤RDS
– for FM, displays RDS information.
∞SLEEP
– selects the sleeper time.

3 - 3
CONTROLS AND TROUBLESHOOTING
WARNIN Under no circumstances should you try to repair the system yourself, as this will invalidate the warranty. Do not open the system as there is a risk of electric shock.
If a fault occurs, first check the points listed below before taking the system for repair. If you
are unable to remedy a problem by following these hints, consult your dealer or hilips for
help.
ÉÅ 5
6
Notes for remote control: – First select the source you wish to control by pressing one of the source select keys on the remote control for example DISC, FM . – Then select the desired function for example
ÉÅ
,
à
,
á
.
§DIM
– selects different levels of brightness for the
display screen.
≥Numerical Keypad (0~9)
– (for CD/MP3) selects a track directly.
•LOUD
– enables or disables automatic loudness
adjustment.
ªSHIFT
– inputs a number larger than 10 (used together
with the Numerical Keypad).
ºn
– connects a headphone.
⁄USB DIRECT – jack for the external USB mass storage device.

4 - 1 4 - 1
DISASSEMBLY INSTRUCTION - CD PART

4 - 2 4 - 2
DISASSEMBLY INSTRUCTION - TUNER & AMP PART

1. Keep PLAY/PAUSE & STOP buttons (on the set) depressed while plug in the power cord.
VFD shown as below:
SOFTWARE VERSION CHECKING
CD/MP3 VERSION CHECK
1. Press DISPLAY button on remote control 4 times, display shows as below:
device

6 - 1 6 - 1
SET BLOCK DIAGRAM

6 - 2 6 - 2
SET WIRING DIAGRAM

7 - 17 - 1
CIRCUIT DIAGRAM - VFD / KEY BOARD ASSEMBLY
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
Vdd 14
S1/KS1 15
S2/KS2 16
S3/KS3 17
S4/KS4 18
S5/KS5 19
S6/KS6 20
S7/KS7 21
S8/KS8 22
S9/KS9 23
S10/KS10 24
S11/KS11 25
S12/KS12 26
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
G5
40
G4
41
G3
42
G2
43
G1
44
Vdd
45
LED5
46
LED4(BBE)
47
LED3(POWER)
48
LED2(FANCT)
49
LED1(7507RST)
50
Vss
51
OSC
52
IC701
uPD16311
R702
47K
R705
33K
R706 33K R707 33K R708 33K
K4
K3
K2
K1
D702 4148
D701 4148
STB1 CLK DATA
S1
S2
S3
S4
S5
S6
S7
S8
S9
S1 S2 S3 S4 S5 S6 S7
KS2
-24V
+5V
S1
S2
C702
104
R703
2.2/0.5
C704
104
VF2
REM 1
GND 2
Vcc 3
S701
REMOTE
SW701
TACT(STBY)
REM
V-GND
+5V
VF1
1
VF1
2
S3
3
S2
4
S1
5
S15
6
S16
7
S4
8
S5
9
S6
10
S7
11
G2
12
G3
13
G4
14
G1
15
G5
16
NC
17
G9
18
G6
19
G7
20
G8
21
S8
22
S9
23
S10
24
S11
25
S14
26
S13
27
S17
28
S18
29
S19
30
S12
31
VF2
32
VF2
33
VFD701
NE-1300CD-3.G
S10
S11
S12
S13 S14 S15 S16 S17 S18 G10 G1 G2 G3 G4 G5 G6 G7 G8 G9
S10 S11 S12 S13 S14 S18 G5 G6 G7 G4 G3 G9 G8 S8 S9 G2 G1 G10
1
2
3
4
5
6
CN704
2.0/6P
STB1
DATA
CLK
V-GND
REM
+5V
1
2
3
CN701
2.0/3P
-24V
VF2
VF1
1
2
3
4
5
6
CN703
2.0/5P
K1
K2
K3
K4
D703 4148
S3 KS3
R704
2.2/0.5
KS3
C701
47uF
R701 4K7 R709 10K R710 10K
S16 S17
R712 0
+5V-2
-SKIP 1
SEARCK 2
+SKIP 3
COM
4
SEARCH
5
PLAY/PAUSE
6
SW706
4SW
KEY1-1
KEY2-1
KEY3-1
KEY4-1
1
2
3
4
5
CN1401
2.0/5P
KS2-1
KEY4-2
KEY3-2
KEY2-2
KEY1-2
KS3-2 1
2
3
4
5
6
CN1501
2.0/5P
SW1503
T(STOP)
SW1502
T(PLAY)
SW1501
T(FUNC)
SW1504
T(OP/CL)
KEY1-2
KEY2-2
KEY3-2
KEY4-2
K1
K2
K3
K4
1
2
3
4
5
6
CN702
2.0/5P
KS2
PRE MEM REP
NEXT
+5V
MCD-7
MCD-14
MCD-15
S15
gnd
GND

7 - 2 7 - 2
LAYOUT DIAGRAM - VFD / KEY BOARD ASSEMBLY
COMPONENT SIDE

8 - 2
8 - 2
LAYOUT DIAGRAM - CD BLOCK
COMPONENT SIDE

9 - 1 9 - 1
RIPPLE
1
AM-RF
2
FM-GND
3
RF-GND1
4
FM-OSC
5
AM-OSC
6
Vcc1
7
TUNE
8
VCO
9
AF-OUT
10
MPX-IN
11
LPF
12
MUTE
13
LEFT
14
RIGHT
15
PILFIL
16
IF-GND
17
FMDEM
18
AFC-
19
AFC+
20
FSI
21
VCC2
22
VDD 23
MO/ST 24
XTAL 25
DGND 26
CLOCK 27
P1 31
P0 30
WRITE-EN 29
DATA 28
FM-IF2-IN 33
AM-AFC 32
FM-IF1-IN 37
AM-IF2 36
FM-IF2 35
VSTABB 34 VSTABA 38
AM/FM 39
AM-MIXOUT 40
AM-IF1-IN 41
RF-GND2 42
NC 43
AGC 44
IC1
TEA5762
C4
104
C10
100uF
VCC1
R11
56K
RV1
100K
R12
1K
C22
224
C26
474 C27
474
R27
2K2
C28
1uF
C30
2.2uF
C31
15pF C32
470n
C7
104 VCC2
VDD
X1
75K
R14
150K
C14102
C15
12P
R22 470
R21 470
R18 22K
C19
222
C17
221
C18
221
P0
P1
R15
0
C16
221
R23
470
1
2
3
4
CN1
4P
R4
120
R3
120
C34
223
VCC1
C24 224
C25 224
R7
330
R25
47K
R24
47K
DZ1
BZX384-C11
R35
22
C23
224 R33
5K6
R34
47K
Q3
BC547C
Q2
BC857B
R31
68K
C35
22uF
R32
10K
R30
150
C33
82pF
C29
1uF
+FM
VDD
VCC2
AM/FM
R29
820
R28
820
C40
153
C39
153
1 3
2
CF1
10.7M
1 3
2
CF2
10.7M
R2
120
R1
120
R5
330
C2
104
C1
10uF
1
2
34
6
T7
511BE/43462
ANT
1
GND
2
GND
3
GND
4
VT
5
B+
6
IF-OUT 7
OSC-OUT 8
GND
9
GND
10
FM FRONTEND
TUNE1
KST-F404
R6
330
R8
2.2K
R9
100
C13
103
C3
104 C9
100uF
+FM
R10
220
C21
1uF
3 2 1 6
4
T6
20402
R36
33K Q4
BC857C
C12
33pF
R19
22K
R13
1K
C20
222
MPX
MPX
VCC1
ST/NO
ENABLE/MPX
DATA
CLOCK
VCC
RIGHT
LEFT
SGND
FM RF GND 4
FM ANT 3
AM RF GND 2
AM ANT 1
JACK1
TUNER1
C8
104
RDS ONLY
BUFFER AMPLIFIER
22n-USA22n-USA
DISCRIMINATOR
BIRDY FILTER
7.8V
11V
8.2V
8.9V
8.2V
AM/FM
1
2
3
4
5
CN2
5P
R37
0
R38
0
R40
0
C5
104
C6
102
Q1
9014
Q5
9014
R42
4.7K
R43
4.7K
R16
1M
R41
100
R46
1K
R47
1K
C41
100uF
C42
224
C43
224
R17
1M
R45
000
R44
000
VCC
J2
000
J3
000
VCC VCC
1
2
CN3
2P
T104
CIRCUIT DIAGRAM - TUNER BOARD