Philips MAS-65 Service manual
Mini System
MAS65
all versions
TABLE OF CONTENTS
Handling chip components ........................................................... 1-1
Service tools ................................................................................. 1-1
Leadfree and safety information ................................................... 1-2
Technical specification .................................................................. 2-1
Service measurement setup ......................................................... 2-2
Connections and controls ..................................................... 3-1...3-3
Disassembly diagram ........................................................... 4-1...4-2
Block diagram ............................................................................... 5-1
Wiring diagram ............................................................................. 5-2
Radio board
circuit diagram .......................................................................... 6-1
layout diagram .......................................................................... 6-2
Cassette board
circuit diagram .......................................................................... 7-1
layout diagram .......................................................................... 7-2
CD board
circuit diagram. ......................................................................... 8-1
layout diagram .......................................................................... 8-2
Control and Main board
circuit diagram (control board) ................................................. 9-1
circuit diagram (main board) .................................................... 9-2
layout diagram ......................................................................... 9-3
Power board
circuit diagram ....................................................................... 10-1
layout diagram ....................................................................... 10-2
Exploded view diagram ..................................................... 11-1 ...11-2
Mechanical partslist ......................................................................11-2
Electrical partslist ........................................................................ 12-1
©
Copyright 2005 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 YT 0525 Service Audio Printed in The Netherlands Subject to modification
Version 1.0
© 3141 785 30490
HANDLING CHIP COMPONENTS
1 - 1
1 - 2
SPECIFICATIONS
2 - 1
GENERAL:
Mains voltage : 110-127/220-240V Switchable
Mains frequency : 50/60 Hz
Power consumption : < 50W max.
< 5W at standby
Clock accuracy : 4 seconds per day
Dimension center unit : 267 x 298 x 254 mm
TUNER:
FM
Tuning range : 87.9 – 107.9 MHz
IF Frequency : 10.7 MHz r 20kHz
Aerial input : 300 : dipole wire
Sensitivity at 26sb S/N : < 18 PV
Selectivity at 600 kHz
Bandwidth : > 46 dB
IF rejection : > 50 dB
Image rejection : > 25 dB
Distortion : < 2%
Crosstalk : > 18 dB
MW
Tuning range : 520 – 1710 kHz
Grid : 10 kHz
IF Frequency : 450 kHz r 1kHz
Aerial input : Loop antenna
Sensitivity at 26sb S/N : < 4.4 mV/M
Selectivity at 18 kHz
Bandwidth : > 18 dB
IF rejection : > 28 dB
Image rejection : > 32 dB
Distortion : < 5%
AMPLIFIER:
Output power : 2 x 20 W RMS
Speaker impedance : 6 ohm
Frequency response
Within r 3dB : 50Hz – 15 kHz
Hyper bass sound ON : 10dB r 3dB at 100Hz
Digital sound control : Flat /Rock/Jazz/Pop/
Classic
Headphone output : 32 mW r 2dB at 32 :
CASSETTE RECORDER:
Number of tracks : 2 x 2 stereo
Tape speed : 4.76 cm/sec +2.5/-1.5%
Wow and flutter : < 0.35% DIN
Fast-wind/rewind time : < 160 sec. With C-60
Bias frequency : 65 r 5 kHz
R/P frequency response : 50 – 10 kHz (8 dB)
Signal to noise radio : > 35 dB with type 1 tape
COMPACT DISC:
Number of programming track : 32
Frequency response
Within r 1.5 dB : 20 Hz – 20 kHz
Signal/Noise ratio : 50 dB/A-weighted
Distortion at 1 kHz : < 3%
Channel separation at 1 kHz : > 25 dB
Support disc format :
Disc format ISO9660, single session CD
Max albums: 25, max. titles: 255
Bit rate : 128 bits (recommended)
SERVICE MEASUREMENT
2 - 2
Tuner FW
RF Generator
e.g. PM5326
DUT
Bandpass
250Hz-15kHz
e.g. 7122 707 48001
LF Voltmeter
e.g. PM2534
½
Ri=50
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).
Tuner AM (MW,LW)
RF Generator
e.g. PM5326
½
Ri=50
DUT
Frame aerial
e.g. 7122 707 89001
Bandpass
250Hz-15kHz
e.g. 7122 707 48001
LF Voltmeter
e.g. PM2534
S/N and distortion meter
e.g. Sound Technology ST1700B
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).
CD RECORDER
Use Audio Signal Disc SBC429 4822 397 30184
(replaces test disc 3)
DUT
L
R
S/N and distortion meter
e.g. Sound Technology ST1700B
LEVEL METER
e.g. Sennheiser UPM550
with FF-filter
Use Universal Test Cassette Fe SBC420 4822 397 30071
LF Generator
e.g. PM5110
DUT
½
Ri=50
L
R
S/N and distortion meter
e.g. Sound Technology ST1700B
LEVEL METER
e.g. Sennheiser UPM550
with FF-filter
CONNECTION AND CONTROLS
3 - 1
CONNECTION AND CONTROLS
3 - 2
CONNECTION AND CONTROLS
3 - 3
For more information onoperation instruction please visit Philips
Audio internet site :
http://www.audio.philips.com
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