Philips MC-M570/21 User manual

GB
CLASS 1
LASER PRODUCT
COMPACT
DIGITAL AUDIO
Service Manual
Service
Service
Service
Service
Service
MC-M570/21/21M/22/37
TABLE OF CONTENTS
Page
Location of pc boards & Version variations ................1-2
Technical Specifications .............................................1-3
Measurement setup ....................................................1-4
Service Aids, Safety Instruction, etc...........................1-5
Disassembly Instructions & Service positions .............. 2
Service Test Programs ...............................................3-1
Set Block diagram ......................................................4-1
Set Wiring diagram .....................................................5-1
Front Board .................................................................... 6
ECO6 Tuner Board : Systems Non-Cenelec............. 7A
Systems Cenelec..................... 7B
5DTC Module (MP3 Version) ...................................... 10
Power 2003 Module (100W Class D) .......................... 11
Set Mechanical Exploded view & parts list ................. 12
©Copyright 2003 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 BB 0313 Service Audio Printed in The Netherlands Subject to modification
Micro System
3139 785 30290
Version 1.0

1-3
SPECIFICATIONS
GENERAL:
Mains voltage : 110-127V/220-240VSwitchablefor /21/21M
120V for /37
220V for /33
220-230V for /22
230-240V for /30
Mains frequency : 50/60Hz
Clock accuracy : < 4 seconds per day
Dimension centre unit : 175 x 268 x 316mm
Power consumption
Active : 80W for /22/33/37
Active : 90W for /21/21M
Standby : < 15W (DEMO mode off)
ECO Power Standby : < 0.5W for /22/33/37
ECO Power Standby : < 1W for /21/21M
TUNER:
FM
Tuning range : 87.5-108MHz
Grid : 50kHz
100kHz for /37
IF frequency : 10.7MHz ±25kHz
Aerial input : 75 ohm coaxial
300 ohm click fit for /37
Sensitivity at 26dB S/N : < 7uV
Selectivity at 600kHz bandwidth : > 25dB
Image rejection : > 25dB [> 75dB]
Distortion at RF=1mV, dev. 75kHz : < 3%
-3dB Limiting point : < 8uV
Crosstalk at RF=1mV, dev. 40kHz : > 18dB
MW
Tuning range : 531-1602kHz
530-1700kHzfor/21/21M/37
Grid : 9kHz
10kHz for /21/21M/37
IF frequency : 450kHz ±1kHz
Aerial input : Frame aerial
Sensitivity at 26dB S/N : < 4.4mV/M
Selectivity at 18kHz bandwidth : > 18dB
IF rejection : > 45dB
Image rejection : > 28dB
Distortion at RF=50mV, M=80% : < 5%
AMPLIFIER:
Output power (6 ohm, 1kHz, 10% THD)
L & R : 2 x 100W RMS
Output power (6 ohm, 60Hz-12.5kHz, 10% THD)
L & R : 2 x 95W FTC /37
Frequency response within -3dB : 50Hz-16kHz
MAX Sound : On / Off
Digital Sound Control (DSC) : Jazz / Rock / Pop / Optimal
Virtual Environment Control (VEC) : Cyber Hall / Concert /
Cinema / Off
Input sensitivity
Aux in (at 1kHz) : 500mV at 600 ohm
CDR in (at 1kHz) : 1000mV at 600 ohm
USB (at 1kHz) : 830mV at 600 ohm
Output sensitivity
Headphone output at 32 ohm : 15mW ±2dB (Max. vol.)
5DTC:
Measurement done directly at the connector on the board.
Output Resistance : < 100 ohm
Output Voltage (0dB, 1kHz) : 0.5Vrms ±1dB (unloaded)
Channel Unbalance : < ±1dB
Channel Separation (1kHz) : > 60dB
Frequency Response (±3dB) : 20Hz-20kHz
Signal to Noise Ratio : > 76dBA
MP3-CD Bit Rate : 32-256 kbps
Sampling Frequencies : 32, 44.1, 48 kHz
USB:
Measurement done directly at the connector on the board.
Output Resistance : < 1.5 kohm
Output Voltage (0dB, 1kHz) : 830mVrms ±1.5dB
(RL= 33 kohm)
Channel Unbalance : < ±1dB
THD + Noise (0dB, 1kHz) : < 0.3%
Channel Separation (0dB, 1kHz) : > 40dB
Frequency Response (±3dB) : 20Hz-20kHz
Signal to Noise Ratio : > 75dBA
[....] Values indicated are for "ECO6 Cenelec Board" only.

Figure 1
DISMANTLING INSTRUCTIONS
2-1 2-1
Dismantling of the 5DTC Module
1) Loosen 4 screws and remove the Cover Top (pos 255) by
sliding it out towards the rear before lifting up.
- 2 screws on the rear
- 1 screw each on the left & right side
2) Loosen 3 screws each to remove the Panel Left (pos 253)
and Panel Right (pos 254). The Panels are remove by
sliding it towards the rear and outwards.
- 1 screw on the side
- 2 screws on the rear
3) Take a paper clip or any stiff wire diameter of 1mm-1.5mm.
Place the set in position and insert the paper clip or stiff
wire as shown in Figure 1.
1) Remove 2 screws B (pos 282) as shown in Figure 4 from
the bottom of the Cabinet Front (pos 101).
2) Release the fixation of the Combi Board (pos 1102-1001)
to Bracket Combi (pos 252) by releasing the 2 catches C1
(see Figure 5) and pulling the Combi Board outwards as
shown in Figure 6.
3) Uncatch 2 catches C2 (see Figure 5) on the left & right
sides of the Cabinet Front (pos 101) and slides the Front
Panel assembly out towards the front.
Detaching the Front Panel assembly from the Bottom/Rear assembly
4) To remove the Cover CD Orn (pos 111), you have to feel
and give a push in the correct direction (see Figure 1) and
correct position (see Figure 2) to release the catch of the
Cover CD Orn before removing it out.
5) Loosen 4 screws A (see Figure 3 and Figure 9) to remove
the 5DTC Module (pos 1103).
- 2 screws on the front
- 2 screws on the rear
Note : For information on the 'Emergency opening of the
trays' of the 5DTC Module, refer to Chapter 10
(Page 10-7).
Figure 2
Figure 5
Figure 4
Figure 3
Figure 6

2-2 2-2
Dismantling of the Front Panel assembly
1) The Knob Volume (pos 136) can be remove by pulling it out
in the direction as shown in Figure 7.
2) Loosen 4 screws D (see Figure 8) to remove the Bracket
Top (pos 251) and CDC Key Board (pos 1105B).
3) Loosen 2 screws E (see Figure 8) to remove the Bracket
Combi (pos 252).
4) Loosen 9 screws F (see Figure 8) to remove the Front
Board (pos 1105A).
5) Loosen 3 screws G (see Figure 8) to remove the USB PC
LINK Board (pos 1106).
Dismantling of the Rear Panel assembly
1) Loosen 3 screws H and 2 catches C3 (see Figure 9)
to remove the Tuner Board assembly.
2) Loosen 1 screw K (see Figure 9) to free the Mains
Socket Board (pos 1102-1002B).
3) Loosen 4 screws J and 2 catches C4 (see Figure 9)
to remove the Cabinet Rear (pos 256) by sliding it
out towards the rear (see Figuer 10).
Note : Tuner Board assembly and Mains Socket
Board can also be remove together with the
Cabinet Rear.
4) Loosen 4 screws L (see Figure 9) to remove the Fan
(pos 1104) from the Cabinet Rear.
Figure 7
Figure 8
DISMANTLING INSTRUCTIONS
Figure 9
Figure10

Service position A
Service position B
Service position C
2-3 2-3
DISMANTLING INSTRUCTIONS
Repair Hints & Service Positions
1) During repair it is possible to disconnect the ECO6 Tuner
board and/or 5DTC Module completely unless the fault is
suspected to be in that area. This will not affect the
performance of the rest of the set.
Note: The flex cables are very fragile, care should be taken
not to damage them during repair. After repair, be
very sure that the flex cables are inserted properly
into the flex sockets before encasing, otherwise faults
may occurs.