Philips MCM177 User manual

Version 1.0
MCM177
3141 785 32470
Micro Hi-Fi System
-/12/05
Published by LX 0805 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.
CONTENTS
�
Technical specification ..................................................................1-2
Service measurement setup..........................................................1-3
Service aids .................................................................................1-4
Instructions on CD playability ...............................................2-1.. 2-2
Disassembly diagram............ ........................................................3-1
Block diagram................................................................................4-1
Wiring diagram ..............................................................................4-2
Main board
Circuit diagram ..................................................................5-1..5-3
Layout diagram..................................................................5-4..5-5
Display board
Circuit diagram .........................................................................6-1
Layout diagram.........................................................................6-2
Exploded view diagram .................................................................9-1
Mechanical parts list......................................................................9-2
Electrical parts list...............................................................10-1..10-2

AMPLIFIER
Output power ........................................ 2 x 10W RMS
Signal-to-noise ratio .......................... ≥60 dBA (IEC)
Frequency response ....................... 125 – 16000 Hz
Impedance loudspeakers ........................................... 4Ω
CD PLAYER
Frequency range ............................... 125 – 16000 Hz
Signal-to-noise ratio ............................................ 65 dBA
TUNER
FM wave range ................................... 87.5 – 108 MHz
Sensitivity at 75 Ω
– FM 26 dB sensitivity .......................................... 20 µV
Total harmonic distortion..................................... ≤5%
SPEAKERS
Bass reflex system
Dimensions (w x h x d) . 160 x 250 x 180 (mm)
GENERAL INFORMATION
AC Power ................................. 100 – 240V, 50/60 Hz
Dimensions (w x h x d) ..... 232 x 85 x 275 (mm)
Weight (with speakers) .......................... approx. 5 kg
Power consumption
Active .......................................................................... 30 W
Standby .................................................................... < 5 W
Eco Power Standby ........................................... < 1 W
Specifications and external appearance are
subject to change without notice.
TECHNICAL SPECIFICATION
1 - 2

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
2 - 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 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
2 - 2

DISASSEMBLY DIAGRAM
Dismantling of the Bottom Cabinet
Dismantling of the PCB Board
1)Remove 7 screws A as indicated to loosen the Bottom Cabinet.
3)Remove 12 screws C&D as indicated to loosen the Main&Display Board.
2)Remove 5 screws B before dismantling of the PCB Board "C".

SET BLOCK DIAGRAM
4 - 1 4 - 1

SET WIRING DIAGRAM
4 - 2 4- 2

5 - 15 - 1
CIRCUIT DIAGRAM - MAIN BOARD
CD & MP3 PART

CIRCUIT DIAGRAM - MAIN BOARD
AF & AMP PART
5 - 2 5 - 2

CIRCUIT DIAGRAM - MAIN BOARD
USB PART
5 - 3
5 - 3

5 - 4 5 - 4
LAYOUT DIAGARM - MAIN BOARD
COMPONENT SIDE VIEW

5 - 5
LAYOUT DIAGARM - MAIN BOARD
COPPER SIDE VIEW
5 - 5

CIRCUIT DIAGRAM - DISPLAY BOARD
6 - 1 6 - 1

LAYOUT DIAGARM - DISPLAY BOARD
6 - 2 6 - 2

EXPLODED VIEW DIAGRAM
9 - 1 9 - 1

9 - 2
MECHANICAL PARTSLIST
D001 996510012043 LCD DISPLAY
204 996510012045 LCD HOLDER
205 996510012046 ECO POWER LED HOLDER
217 996510012047 LCD LIGHTGUIDE LENS
80 994000005398 CD MECHANISM DA11B3VF
109 996510012072 CD DOOR SPRING
201 996510019958 BOTTOM CABINET
202 996510012057 TOP CAB FRONT
203 996510019959 HOUSING
206 996510012059 USB BRACKET
207 996510012060 CD HOLDER
209 996510012061 CD DOOR
210 996500039787 LASER COVER (FOR SANYO CD)
211 996510008685 DAMPER GEAR ASSY (70kgf/cm)
212 996510012062 TWO KEYS
213 996510012063 HOLDER UNDER KEYS
214 996510012100 CLUSTER KEYS
215 996510012064 PLAY KEY
216 996510012065 VOLUME KNOB
218 996510012066 USB LENS
219 996510012067 IR LENS
220 996510012068 CD DOOR LENS
221 996510012069 ECO POWER LIGHTGIUDE LENS
222 996510012071 USB LOGO PANEL
224 996510012070 STAND
J001 996510012052 16P FFC.1mm L=70mm
J002 996510012053 12P FFC.1mm L=150mm
J003 996510012054 15P FFC.1mm L=200mm
J004 996510012055 10P FFC.1.25mm L=180mm
S001 994000002354 CD DOOR SWITCH DLS-02-W-1
T002 996510012051 TUNER MODULE EUROP
ACCESSORIES
T001 996510012050 AC ADAPTER VDE -/05
T001 996510019960 AC ADAPTER VDE -/12
2 996510025401 SINGLE SPEAKER BOX L/R
6 996510012049 REMOTE CONTROL
J008 996510009346 FM ANT (BLACK) 1M "CE"
Note: Only these parts mentioned in the list are
normal service parts.

ELECTRICAL PARTSLIST
MAIN BOARD ASSEMBL
Y
D1 996510000896 SCHOTTKY BARRIER DIODE SK 1217
D21 996510009333 DIODE RB160M-30 SOD-123
D23 996510009333 DIODE RB160M-30 SOD-123
D36 996510000323 SMD DIODE BAS316
D37 996510000323 SMD DIODE BAS316
D7 996510000323 SMD DIODE BAS316
D8 996510000323 SMD DIODE BAS316
Q1 996510000878 TRANSISTORS SPD09P06PL
Q10 996510010910 TRANSISTOR ST8050C
Q11 994000004145 TRANSISTORS B772Y (160-320)
Q12 994000004338 SMD TRANSISTORS PMBT3904
Q2 994000004338 SMD TRANSISTORS PMBT3904
Q25 994000004338 SMD TRANSISTORS PMBT3904
Q26 994000004338 SMD TRANSISTORS PMBT3904
Q27 994000003937 SMD TRANSISTORS PMBT3906
Q28 994000004338 SMD TRANSISTORS PMBT3904
Q3 994000004338 SMD TRANSISTORS PMBT3904
Q30 994000001194 TRANSISTORS KSD882Y
Q31 994000001194 TRANSISTORS KSD882Y
Q32 994000001194 TRANSISTORS KSD882Y
Q33 994000004145 TRANSISTORS B772Y (160-320)
Q34 994000004338 SMD TRANSISTORS PMBT3904
Q36 994000004338 SMD TRANSISTORS PMBT3904
Q4 996510000878 TRANSISTORS SPD09P06PL
Q5 996510012039 TRANSISTOR ST8550C
Q6 994000004338 SMD TRANSISTORS PMBT3904
Q7 996510012039 TRANSISTOR ST8550C
Q702 994000004145 TRANSISTORS B772Y (160-320)
Q8 994000004338 SMD TRANSISTORS PMBT3904
Q801 996510000315 SMD TRANSISTORS BC807-25
Q9 994000004338 SMD TRANSISTORS PMBT3904
IC12 994000002839 IC LM1117S-3.3
IC3 996510012040 IC AP1501ADJ
U14 994000004607 IC PT2314
U15 996510006679 IC (SANYO) LC786921W-UPHI-E
U16 994000004622 IC LA6548NH
U17 996510002118 IC SST39VF010-70-4C-WHE (1M)
U18 996510002117 IC OTI6889 (LQFP-80)
U19 996510012038 IC TDA8932BT
U21 994000001201 IC NJM4556AM
CON3 994000003661 SPK JACK PT-22V11
F1 !996510002426 CERAMIC FUSE 3.9x10.5mmW
J001 996510002122 DC JACK TC-18-013-03
J11 996510012041 RCA JACK 2P
L11 996500042462 FXDIND BEAD 100MHz 80R
L13 996500042462 FXDIND BEAD 100MHz 80R
L35 996510000885 CHOKE COIL 47UH W/PLASTIC TUBE
L4 996510000885 CHOKE COIL 47UH W/PLASTIC TUBE
X1 996510008326 CRYSTAL 12 MHzHC-49/US H=3.5mm
X801 994000004551 CRYSTAL 16.9344MHZ +-20PPM
10 - 1

ELECTRICAL PARTSLIST
DISPLAY/KEY BOARD ASSEMBL
Y
D1 996510012044 ROTARY ENCODER
D18 996510019961 LED LAMP 2x5x7mm (WHITE)
D19 996510019961 LED LAMP 2x5x7mm (WHITE)
D20 996510019961 LED LAMP 2x5x7mm (WHITE)
D3 994000001234 LED LAMP 3MM (RED)
D39 996510009333 DIODE RB160M-30 SOD-123
D401 996510000323 SMD DIODE BAS316
D5 996510019961 LED LAMP 2x5x7mm (WHITE)
Q13 994000003937 SMD TRANSISTORS PMBT3906
Q14 994000003937 SMD TRANSISTORS PMBT3906
Q15 996510010910 TRANSISTOR ST8050C
Q35 994000004338 SMD TRANSISTORS PMBT3904
U12 994000002839 IC LM1117S-3.3
U13 996510019962 MCU GY398 V1.22
U8 994000001236 IC M24C01-WMN6
P1 994000004367 OPTIC SENSER FM-6038TM2-5AN
SW1 994000004157 TACT SWITCH 6X6MM H=5MM
SW10 994000004157 TACT SWITCH 6X6MM H=5MM
SW11 994000004157 TACT SWITCH 6X6MM H=5MM
SW12 994000004157 TACT SWITCH 6X6MM H=5MM
SW13 994000004157 TACT SWITCH 6X6MM H=5MM
SW2 994000004157 TACT SWITCH 6X6MM H=5MM
SW3 994000004157 TACT SWITCH 6X6MM H=5MM
SW4 994000004157 TACT SWITCH 6X6MM H=5MM
SW5 994000004157 TACT SWITCH 6X6MM H=5MM
SW7 994000004157 TACT SWITCH 6X6MM H=5MM
SW8 994000004157 TACT SWITCH 6X6MM H=5MM
SW9 994000004157 TACT SWITCH 6X6MM H=5MM
USB JACK BOARD ASSEMBL
Y
D1 996510000438 LED LAMP
J105 996510001316 USB SOCKET 4P
HP/AUX JACK BOARD ASSEMBL
Y
AUX 996510012048 PHONE JACK D3.6mm
J002 994000004369 PHONE JACK TC38-063-05-0
Note: Only these parts mentioned in the list ar
e
normal service parts
.
10 - 2