Philips MC-50/22 User manual

CLASS 1
LASER PRODUCT
COMPACT
DIGITAL AUDIO
Service Manual
Service
Service
Service
MC-50/22/37
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
Instruction for use: European version excerpt..........2-1
Additional features .................. 2-13
Disassembly Instructions & Service positions ...........3-1
Service Test Programs ...............................................3-4
Set Block diagram ......................................................... 4
Set Wiring diagram ........................................................ 5
Front Display Board ....................................................... 6
ECO6 Tuner Board: System Non-Cenelec ................ 7A
System Cenelec........................ 7B
Front Control Board ....................................................... 8
ETF6-LE Tape Module ................................................... 9
3TDC Module ............................................................... 10
Mains Board................................................................. 11
Combi & Regulator Boards .......................................... 12
Set Mechanical Exploded view & parts list ................. 13
©Copyright 2001 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 KC 0106 Service Audio Printed in The Netherlands Subject to modification
GB
3139 785 22710
Micro System
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1-2
LOCATION OF PC BOARDS
/22 /37
Incredible Surround x x
Karaoke
News x
RDS x
Rotary Encoder (volume control) x x
Jog Shuttle
Voltage Selector
Aux Input x x
Digital Output x x
Headphone Socket x x
Line Output
Subwoofer Output x x
Surround Output
Matrix Surround Loudspeakers
Normal Standby with Clock Display x x
ECO Power (LPS or Low Power Standby) x
ECO6 Tuner board - System Non-Cenelec x
ECO6 Tuner board - System Cenelec x
VERSION VARIATIONS:
Type /Versions: MC-50
Features &
Board in used:
MAINS BOARD
SOCKET
BOARD
REGULATOR
(STABILIZER)
BOARD
TUNER BOARD
ETF BOARD
DISPLAY BOARD
COMBI BOARD
STANDBY
(POWER)
BOARD
CDC KEY
BOARD
KEY CONTROL
(KEYB.1)
BOARD
JOG
(VOLUME)
BOARD
HEADPHONE
BOARD
LIGHTWASH BOARD
CD MAIN BOARD
3DTC
LOADER
MECHANIC
BOARD
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1-3
SPECIFICATIONS
GENERAL:
Mains voltage : 120V for /37
220-230V for /22
Mains frequency : 50/60Hz
Power consumption : < 15W at Standby (Demo off)
< 1W at Eco Power Standby /22
< 66W Active
Clock accuracy : < 4 seconds per day
Dimension centre unit : 175 x 244 x 322mm
TUNER:
FM
Tuning range : 87.5-108MHz
Grid : 50kHz
100kHz for /37
IF frequency : 10.7MHz ±25kHz
Aerial input : 75Ωcoaxial
300Ωclick fit for /37
Sensitivity at 26dB S/N : < 7µV
Selectivity at 600kHz bandwidth : > 25dB
Image rejection : > 25dB
Distortion at RF=1mV, dev. 75kHz : < 3%
-3dB Limiting point : < 8µV
Crosstalk at RF=1mV, dev. 40kHz : > 18dB
MW
Tuning range : 531-1602kHz
530-1700kHz for /37
Grid : 9kHz
10kHz for /37
IF frequency : 450kHz ±1kHz
Aerial input : Frame aerial
Sensitivity at 26dB S/N : < 4.0mV/M
Selectivity at 18kHz bandwidth : > 18dB
IF rejection : > 45dB
Image rejection : > 28dB
Distortion at RF=50mV, m=80% : < 5%
LW
Tuning range : 153-279kHz for /22
Grid : 3kHz
IF frequency : 450kHz ±1kHz
Aerial input : Frame aerial
Sensitivity at 26dB S/N : [< 6.0mV/M]
Selectivity at 18kHz bandwidth : [> 24dB]
IF rejection : [> 45dB]
Image rejection : [> 30dB]
Distortion at RF=50mV, m=80% : [< 5%]
AMPLIFIER:
Output power : 2 x 25W RMS 1) /22
2 x 20W FTC 2) /37
Frequency response within -3dB : 50Hz-16kHz
Treble control : 12.5kHz ±3 steps 3)
Bass control : 55Hz ±3 steps 3)
Incredible Sound : ON/OFF 3)
Headphone output at 32Ω:680mV ±1dB
Sub-woofer output : 1.5V ±3dB at 22kΩ
Digital output (IEC958, 44.1kHz) : 0.5Vp-p
Aux / CDR input : 500mV / 1V ±2dB at 600Ω
CASSETTE RECORDER:
Number of track : 2 x 2 stereo
Tape speed : 4.76 cm/sec ±2%
Wow and flutter : < 0.4% DIN
Fast-wind/rewind time C60 : 130 sec
Bias system : 75kHz ±10kHz
Rec/Pb frequency response within 8dB : 80Hz - 12.5kHz
Signal to noise ratio Type I : > 48dBA
Type II : > 52dBA
COMPACT DISC:
Measurement done at output conn. of the 3DTC module.
Frequency response within +0/-2dB: 20Hz - 20kHz
Output level (in Vrms) : 550mV, Zout = 100Ω
Signal/Noise ratio (A-weighted) : > 76dBA
Distortion at 1kHz : < 0.02%
Channel unbalance at 1kHz : ±1dB
Channel separation at 1kHz : > 79dB
De-emphasis : Switched by subcode on the disc
[....] Values indicated are for "Cenelec version" only
1) 6Ω, 1kHz, 10% THD
2) 6Ω, 60Hz - 12,5kHz, 10% THD
3) Frequency response in each setting is software controlled.
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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 meter
e.g. Sound Technology ST1700B
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=50Ω
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=50Ω
Tuner FM
MEASUREMENT SETUP
1-4
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1-5
SERVICE AIDS
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
Cassette:
SBC419 Test cassette CrO2 ................................. 4822 397 30069
SBC420 Test cassette Fe ..................................... 4822 397 30071
MTT150 Dolby level 200nWb/M ............................ 4822 397 30271
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
ESD Equipment:
Anti-static table mat - large 1200x650x1.25mm ... 4822 466 10953
Anti-static table mat - small 600x650x1.25mm ..... 4822 466 10958
Anti-static wristband .............................................. 4822 395 10223
Connector box (1MΩ)............................................ 4822 320 11307
Extension cable
(to connect wristband to conn. box) .................. 4822 320 11305
Connecting cable
(to connect table mat to conn. box) .................. 4822 320 11306
Earth cable (to connect product to mat or box) .... 4822 320 11308
Complete kit ESD3
(combining all above products) ......................... 4822 320 10671
Wristband tester .................................................... 4822 344 13999
HANDLING CHIP COMPONENTS
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