MCM765/55/77/85
©
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.
Published by SL 0842 Service Audio Printed in The Netherlands Subject to modification
Micro System
Version 1.1
CLASS 1
LASER PRODUCT
© 3141 785 32811
TABLE OF CONTENTS
Page
PCBs Location ......................................................................1-2
Specifi cations .......................................................................1-3
Measurement Setup .............................................................1-4
Service Aids, Safety Instruction, etc ...........................1-5 to 1-7
Service Test Mode ...................................................................2
Set Block Diagram & Set Wiring Diagram ...............................3
Main Board & HP Board ..........................................................4
Front Board..............................................................................5
Key Board ................................................................................6
CD Board .................................................................................7
Cassette Board ........................................................................8
Set Mechanical Exploded View & Parts List ............................9
1-2
TOP KEY BOARD
FRONT BOARD
KEY BOARD
CASSETTE BOARD
CD BOARD
SWITCHING SUPPLY MODULE
MAIN BOARD
FM TUNER MODULE
AC CORE BOARD
SINGLE CASS DECK
CD MECHANISM
CD LOADER
/77 /85
niRDC/nixuA
MP3 Link
Video Out
Subwoofer Out
Digital Out
Karaoke Features
Voltage Selector
ECO Power Standby (LCD Display Off)
USB Direct
Type /Versions:
Features
in used:
/55
VERSION VARIATIONS
Type /Versions:
Board in used:
MCM765
Service policy
MAIN BOARD
KEY & TOP KEY BOARD
FRONT BOARD
CASSETTE BOARD
* TIPS : C -- Component Lever Repair.
M -- Module Lever Repair
-- Used
/05 /12 /55 /85/77
Feature diffrence
C
CD BOARD
C
C
C
TUNER MODULE
M
x
x
C
SWITCHING SUPPLY MODULE
M
AC CORE BOARD
C
C
C
C
C
M
C
M
C
C
C
C
C
M
C
M
C
MCM765
x
xx
xx
PCBS LOCATION
1-3
SPECIFICATIONS
AMPLIFIER
Output power .................................... 4 x 75 W RMS*
Signal-to-noise ratio .......................... t 62 dBA (IEC)
Frequency response ......... 40 – 15000 Hz, ± 3 dB
Impedance loudspeakers ......................................... 4 :
Impedance headphones ........................................ 32 :
* (4 :, 1 kHz, 10% THD)
CD/MP3-CD PLAYER
Number of programmable tracks ......................... 20
Frequency range .................................. 20 – 20000 Hz
Signal-to-noise ratio ............................................ 75 dBA
Channel separation ..........................t 60 dB (1 kHz)
Total harmonic distortion ................................. < 0.5%
MPEG 1 Layer 3 (MP3-CD) .......... MPEG AUDIO
MP3-CD bit rate ....................................... 32-256 kbps
(128 kbps advised)
Sampling frequencies ....................... 32, 44.1, 48 kHz
USB PLAYER
USB ................................................................... 12Mb/s, V1.1
......................................... support MP3 and WMA files
Number of albums/folders ................. maximum 99
Number of tracks/titles ...................... maximum 500
TUNER
FM wave range ...................................87.5 – 108 MHz
Sensitivity at 75 :
– mono, 26 dB signal-to-noise ratio ............ 2.8 µV
– stereo, 46 dB signal-to-noise ratio ........ 61.4 µV
Total harmonic distortion ..................................... d 5%
Frequency response ..... 63 – 12500 Hz (± 3 dB)
Signal-to-noise-ratio ...................................... t 50 dBA
TAPE DECK
Frequency response
Normal tape (type I) ...... 80 – 12500 Hz (8 dB)
Signal-to-noise ratio
Normal tape (type I) .................................... 50 dBA
Wow and flutter ......................................... d 0.4% DIN
SPEAKERS
System 2-way, double por t bass reflex
Woofer ................................................................... 1x13 cm
Tweeter ...................................................................... 1x5 cm
GENERAL INFORMATION
AC Power....................... 110 – 240 V, 60Hz / 50 Hz
Standby Power Consumption ........................ d 18 W
Dimensions (w x h x d)
– Main unit (w x h x d) ...... 175 x 252 x 360 mm
– Speaker box (w x h x d) 175 x 252 x 214 mm
Weight
With packing ......................................................... 10.16 kg
Main unit .................................................................... 3.18 kg
Speaker box ............................................................. 5.36 kg
Specifications and external appearance are
subject to change without notice.
1 - 4
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 - 5
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
3
For flap loaders (= access to CD drive possible)
cleaning method
4 is recommended
INSTRUCTIONS ON CD PLAYABILITY
1 - 6
Exchange CDM
1 - 4 For 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
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
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 - 7
SERVICE TEST MODE
2 - 1
2 - 1
1. How to enter Test Mode:
1. Plug out the power cord.
2. Hold “FB” key and “STOP” Key.
3. Plug in power cord.
4. Unit will enter test mode.
2. Test mode operation:
1. Each VFD grid will ON for every 1s, starting from grid 1 to grid 12.
2. Then, each VFD grid will OFF for every 1s, starting from grid 1 to grid
12.
3. Plug out the power cord and plug in again, test mode will be exit.
3. Version Check:
1. In Power ON Mode, Hold “PLAY” key for 5s. LCD will show the data
code and version number.
4. USB Version Check:
1. In Power ON USB Mode, Hold “STOP” and “SOURCE” key for 5s. LCD
will show the USB chip version number:
MM SS (M=main ver S=sub ver).
5. USB Version Update:
1. In Power ON CD Mode, Hold “STOP” and “FB” key for 5s. LCD will
show the “UPDATE”.
2. Plug-in USB drive will show “LOADING”
3. Wait until the screen show “LOAD OK” and then press “PLAY” to start
update.
4. The Screen shows the “WRITING” during the update process
5. “Complete” will show up after updating the USB chip. Plug out the
power cord and plug in again to resume normal operations.
SET BLOCK & WIRING DIAGRAM
3 - 1
3 - 1
CIRCUIT DIAGRAM - MAIN BOARD
AUDIO & POWER AMP. SECTION (only for /55/77)
4 - 1
4 - 1
CIRCUIT DIAGRAM - MAIN BOARD
AUDIO & POWER AMP. SECTION (only for /85)
4 - 2
4 - 2
4 - 3
4 - 3
CIRCUIT DIAGRAM - MAIN BOARD
MCU & POWER SUPPLY SECTION
4 - 4
4 - 4
LAYOUT DIAGRAM - MAIN BOARD
TOP VIEW
4 - 5
4 - 5
LAYOUT DIAGRAM - MAIN BOARD
BOTTOM VIEW
4 - 6
4 - 6
LAYOUT DIAGRAM - HEADPHONE BOARD
5 - 15 - 1
CIRCUIT DIAGRAM - FRONT BOARD
5 - 2 5 - 2
LAYOUT DIAGRAM - FRONT BOARD
TOP VIEW
5 - 3 5 - 3
LAYOUT DIAGRAM - FRONT BOARD
BOTTOM VIEW
6 - 16 - 1
LAYOUT DIAGRAM - TOP KEY BOARD
TOP VIEW
6 - 26 - 2
LAYOUT DIAGRAM - TOP KEY BOARD
BOTTOM VIEW
CIRCUIT DIAGARM - CD BOARD
7 - 1
7 - 1
LAYOUT DIAGARM - CD BOARD
TOP VIEW
7 - 2
7 - 2
LAYOUT DIAGARM - CD BOARD
BOTTOM VIEW
7 - 3
7 - 3
8 - 1 8 - 1
CIRCUIT DIAGRAM - CASSETTE BOARD
8 - 28 - 2
2
1
3
4
LAYOUT DIAGRAM - CASSETTE BOARD
COMPONENT SIDE
COPPER SIDE
8 - 3
8 - 3
TAPE ADJUSTMENT & CHECK TABLE
^ For Auto-reverse version only
* If high frequencies are not within limits, decrease bias and re-measure.
If distortion is too high, increase bias and re-meaure
PLAY
mV-meter
check
125mV +/- 3dB
(see fig.1 for freq.
response)
PLAYBACK LEVEL
& FREQ. RESPONSE
TEST
CASSETTE
RECORDER
MODE
MEASURE
ON
READ ON
ADJUST
with
MOTOR SPEED
SBC420
3150Hz
PLAY
frequency
counter
check
PLAY
PLAY FWD
PLAY REV ^
W&F-meter
mV-meter
left hand screw
right hand screw
max. output level
& left=right
WOW & FLUTTER
ADJUST AZIMUTH
3150Hz +/- 2%
< 0.4 % DIN
to
1
2
or
LEFT
RIGHT
Inject 3mV signals
100Hz, 250Hz, 1kHz,
10kHz, 12.5kHz
1
2
or
LEFT
RIGHT
Inject 1kHz 8.85mV
3
4
or
via
3
4
or
via
1
2
or
LEFT
RIGHT
RECORD
RECORD
PLAY
PLAY
mV-meter
THD-meter
check
check
limits see fig. 2 *
< 3% *
RECORDED
CASSETTE
RECORDED
CASSETTE
figure. 1
f(Hz)
level(dB)
8dB
6dB
12.5k
4k
250
80
8dB
f(Hz)
level(dB)
8dB
6dB
10k
4k
250
100
8dB
figure. 2
check
SBC419A : 4822 397 30069
SBC420 : 4822 397 30071
SBC420
3150Hz
SBC420
10kHz
SBC419A
or
SBC420
SBC419A
or
SBC420
SBC420
315Hz
CHECK RECORD/PLAYBACK FREQUENCY AND DISTORTION
SET MECHANICAL EXPLODED VIEW
9 - 1
9 - 1
18
VKSW
33
10
34
31
30
35
24
25
20
19
21
27
22
DAMP
32
23
TRAF
3
32
26
17
1
14
12
CADS
SWS
13
38
28
29
CDS2
CDT
DAMP
15
CDS1
CDM
16
MECHANICAL & ACCESSORIES PARTS LIST
9 - 2
1 994000001434
CASS MECHANISM W991S-390 ANT 994000003268 ANTENNA WIRE 1000MM
2
!
996510018690
1.5M VDE POWER CORD /55 CADS 996510002331 CASSETTE DOOR SPRING
2
!
996510016721
1.5M VDE POWER CORD /77 CDM 994000003553 CDM DA12T3V
2
!
996510000876
5FT VDE POWER CORD /85 CDS1 996510001074 CD SPRING DIM:0.5MM
3 996510012855
FM TUNER MODULE CDS2 996510001075 CD SPRING DIM:0.6MM
4 996510016579 FFC L100MM P1.25 10P CDT 996510000871 CD TRAY LOADER
5 996510016580
FFC L100MM 15P DAMP 996510000868 CD DAMPER PINK 658F
6 996500017774
FFC 16P L140MM REM 996510019921 REMOTE CONTROL /85
7 994000005765
FFC 7P L60MM REM 996510019920 REMOTE CONTROL /77/55
8 996510016581
FFC L170MM P1.25 12P SWS 994000005777 SWITCH SPRING
9 996510016582
FFC L230MM P1.25 7P TAC 996510002319
TACT SWITCH EVQ11L04M
10 996510016584 USB RUBBER COVER /55/85 TRAF ! 996510016583 SWITCH SUPPLY MODULE
10
996510016722
USB RUBBER COVER /77 VKSW 996510016578 VOLUME KNOB SPRING D0.8MM
11 994000001409 CD DOOR GEAR HOLDER
12 996510000402
BRACKET PUSH LOCK
13 994000001412
PUSH LOCK FOR CASSETTE DOOR
14 994000004801
BRACKET - CASSETTE DOOR
15 996510002333 TOP CABINET
16 996510002334
16
996510002334
LEFT CABINET
17 996510002335
RIGHT CABINET
18 996510002337 VOLUME KNOB Note: Only these parts mentioned in the list are
19 996510017001
POWER KEY normal service parts.
20 996510002342 POWER LENS
21 996510002347
BRACKET -TOP BUTTON
22 996510016585
BRACKET-FRONT CABINET DISPLAY
23 996510002348
BRACKET CD DOOR
24 996510018689
USB LIGHT GUIDE
25 996510016587
FRONT CABINET
26 996510016588 REAR CABINET /55/77
26 996510017002
REAR CABINET /85
27
996510016595 MODE KEY CLUSTER BUTTONS
28 996510016620 CD CONTROL KEY CLUSTER BUTTONS /55/77
28 996510002340 CD CONTROL KEY CLUSTER BUTTONS /85
29 996510016621 TOPKEY CLUSTER BUTTONS
30
996510016622 DISPLAY LENS
31 996510016623 CONTROL PANEL /55/77
31
996510017003
CONTROL PANEL /85
32 996510016624 CD DOOR
33 996510016625 CASSETTE DOOR
34 996510016626 DECORATION STRIP LEFT
35 996510016627 DECORATION STRIP RIGHT
36 996510016628 FM TUNER BRACKET
37 996510016589 CD TRAY
37
996510016589
CD TRAY
38 996510002350 CASSETTE DOOR DAMPING GEAR
39 996510018691
WOODEN SPEAKER (L+R)
ELECTRICAL PARTS LIS
T
9 - 3
6612
996510015966
DIODE 1N4001 TAPE FORM D3203
996510010774
DIODE 1N4148 FDLL4148
6772
996510011332
DIODE 1N4148 D3204
996510010774
DIODE 1N4148 FDLL4148
6773
996510011332
DIODE 1N4148 D3205
996510010774
DIODE 1N4148 FDLL4148
6774
996510011332
DIODE 1N4148 D3206 996510010774 DIODE 1N4148 FDLL4148
6776
996510011332
DIODE 1N4148 HP801 996510002322 D3.5MM ST. JACK TC38-103-DG-010
6777
996510011338
DIODE BZX79-B8V2 SOD27 IC701 996510012790 IC LC786921W-UPHI-E
6777
DIODE BZX79 B8V2 SOD27
IC701
996510012790
IC LC786921W UPHI E
6778
996510011332
DIODE 1N4148 IC702 996510012791 LA6548NHL-TE-L-E
7610
994000003199
IC HEF4094BT
IC703 996510016568
IC LC87F1HC8A PROGRAMMED
7612
996510003718
TRANSISTOR KTC-8550C
INRE 996510018687
IR RECEIVER SIRC430M3B
7614
996510002323
TRANSISTOR S8550 J1001 996510016569 AUDIO JACK 8P R/W/G /55/77
7618
996510012793
TRANSISTOR BC847B J1001 996510017000 AUDIO JACK 8P B/B/R/R /85
7620
996510012793
TRANSISTOR BC847B J1002 994000003196 8.3MM RCA JACK
7624
996510012793
TRANSISTOR BC847B J501 996510016570 AC POWER SOCKET 2P VDE
7720
994000005719
IC SM AN17150A-E2V L2201 996510016571 RECTIFIER DIODE 1N4001
7780
996510012793
TRANSISTOR BC847B LED1 994000005762 LED BLUE
7781
996510010776
TRANSISTOR BC817-25 SOT23 LED2 994000005762 LED BLUE
7782
996510016564
TRANSISTOR BC557B LED3 994000005762 LED BLUE
7783
996510012793
TRANSISTOR BC847B LED701 994000005763 LED INDICATOR RED
7784
996510012833
TRANSISTOR BC857B
Q
1 996510012793 TRANSISTOR BC847B
7786
994000001433
TRANSISTOR (FET) J112 Q1101 996510016572 TRANSISTOR KTC8050S SOT-23
7788
996510012793
TRANSISTOR BC847B Q1102 996510016572 TRANSISTOR KTC8050S SOT-23
7789
996510016565
TRANSISTOR 8050M Q1103 996510016572 TRANSISTOR KTC8050S SOT-23
7790
996510016565
TRANSISTOR 8050M Q1601 994000003206 TRANSISTOR 8550D
C1001 996510018688
AL.E.CAP. 6800UF 35V Q1602 996510016572 TRANSISTOR KTC8050S SOT-23
C1002 996510018688
C1002
996510018688
AL.E.CAP. 6800UF 35V
Q2205
994000003206
TRANSISTOR 8550D
C1119
996510012837
CBB CAP HMFS-5 0.68UF 63V Q2208 994000003206 TRANSISTOR 8550D
C1120
996510012837
CBB CAP HMFS-5 0.68UF 63V Q2210 994000003206 TRANSISTOR 8550D
C1217
996510012837
CBB CAP HMFS-5 0.68UF 63V Q2211 996500039268 TRANSISTOR KTC-8050C
C1218
996510012837
CBB CAP HMFS-5 0.68UF 63V Q2212 996500039268 TRANSISTOR KTC-8050C
CN102
996510016567
USB CONNECTOR 4P 90 Q2214 996500039268 TRANSISTOR KTC-8050C
D1101 996510003726 SCHOTTKY DIODE PRLL5817 Q2215 994000005755 TRANSISTOR KTA1273
D1102
996510003726
SCHOTTKY DIODE PRLL5817 Q2219 994000003206 TRANSISTOR 8550D
D1104
996510010774
DIODE 1N4148 FDLL4148 Q702 996510011342 TRANSISTOR HIT562 PNP
D1105
996510010774
DIODE 1N4148 FDLL4148 SW701 996510002319 TACT SWITCH EVQ11L04M
D1201
996510003726
SCHOTTKY DIODE PRLL5817 SW702 994000001444 TACT SWITCH TSA-065001-150
D2101
996510011340
DIODE 1N5819 DO-41 SW703 996510002319 TACT SWITCH EVQ11L04M
D2204
996510011339
DIODE 1N4003 SW705 996510002319 TACT SWITCH EVQ11L04M
D2205
996510011339
DIODE 1N4003 SW706 994000001444 TACT SWITCH TSA-065001-150
D2206
996510011339
DIODE 1N4003 SW707 994000001444 TACT SWITCH TSA-065001-150
D2207
996510011339
DIODE 1N4003 SW708 994000001444 TACT SWITCH TSA-065001-150
D2208
996510011339
DIODE 1N4003 SW709 994000001444 TACT SWITCH TSA-065001-150
D2213
996510011340
DIODE 1N5819 DO-41 SW710 994000001444 TACT SWITCH TSA-065001-150
D3101
996510010774
DIODE 1N4148 FDLL4148
SW711
994000001444
TACT SWITCH TSA-065001-150
D3201
996510010774
DIODE 1N4148 FDLL4148 SW712 994000001444 TACT SWITCH TSA-065001-150
D3202
996510010774
DIODE 1N4148 FDLL4148 SW713 994000001444 TACT SWITCH TSA-065001-150
ELECTRICAL PARTS LIS
T
9 - 4
SW714 994000001444 TACT SWITCH TSA-065001-150
U1101 996510012838 IC TDA8920BTH SOT566-3
U1201 996510012838 IC TDA8920BTH SOT566-3
U1301 996510001055 IC BA4558 SOP8
U1401 996510016573 IC TDA7468D13TR(E)
U1402 996510001055 IC BA4558 SOP8
U1601 996500039259 IC PT4800(L) DIP-8 PIN
U2101 994000005724 IC LD1117AL-3.3V-D
U2201 996510001069 IC D6208 SOP8
U2202 996510001058 IC S7806PI TO-220F
U3101 996510016574 IC LC87F7BC8A-QIP-E PROGRAMMED
U3201 996510010763 IC AT24C02BN-SH-T
U701 994000003214 VFD DRIVER IC PT6315
VFD701 996510016575 DISPLAY VFD25-1236N
X702 996510016576 X'TAL 12MHZ 20PF +-20PPM
Y3101 996510003839 X'TAL 32.768KHZ 12.5PF
Y3102 996510016577 X'TAL 8MHZ?20PF+/-20PPM
ZD1101 996510004557 DIODE 5V6 1/2W TCLLZ5V6 LL34
ZD2202 996510011335 ZENER DIODE 10V 1/2W
ZD2203 994000005744 ZENER DIODE 5V1 1/2W
ZD2204 996500039258 ZENER DIODE 9V1 1/2W
ZD2205 996510010769 ZENER DIODE 8V2 1/2W (TC8V2)
ZD2206 994000005758 DIODE BZX79-B6V8 SOD27
ZD3301 994000005744 ZENER DIODE 5V1 1/2W
Note:
ntioned in the list are
rmal service parts.
10-1
REVISION LIST
1.0 Manual 3141 785 32810
Initial Service Manual released.
1.1 Manual 3141 785 32811
In this version, on Page 9-2, Mechanical & Accessories Parts List updated.
REM 996510019921 REMOTE CONTROL /85 (WAS 996510002352)
REM 996510019920 REMOTE CONTROL /55/77 (WAS 996510002352)
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