Philips MC-320 User manual

GB
CLASS 1
LASER PRODUCT
Service
Service
Service
Service
Service
MC-320
TABLE OF CONTENTS Page
Location of PCBs & Version Variations ......................1-2
Technical Specifications .............................................1-3
Measurement setup....................................................1-4
Service Aids, Safety Instruction, etc...........................1-5
Preparations & Controls .............................................1-7
Disassembly Instructions............................................... 2
Set Block diagram .........................................................3
Set Wiring diagram ........................................................4
Key Board ......................................................................5
Power Board ..................................................................6
Tuner Board ...................................................................7
MCU & CD Board ..........................................................8
Connection Board..........................................................9
Main Board ..................................................................10
Set Mechanical Exploded View & Parts List ............... 11
©Copyright 2002 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 0321 Service Audio Printed in The Netherlands Subject to modification
Micro System
3140 785 32530
Version 1.0
ServiceManual
AllVersion

1-2
LOCATION OF PRINTED CIRCUIT BOARDS
MAIN BOARD
TUNERBOARD
POWER BOARD
KEY
BO
A
RD
Type/Versions MC-320
Features &
Board in used
RDS function
Aux Input
ECO Standby
Digital Coaxial Out xx
x
x
xx
x
Subwoofer Out
Line Out
Headphone Out
/21 /25 /30 /37
x
x
/22
AC Voltage Selector x
Non-Cenelec Tuner
Cenelec Tuner x
xxx
x

xx
x
x
x
VERSION VARIATIONS

1-3
SPECIFICATIONS
GENERAL:
Mains voltage /21 : 110V ~ 127V / 220V ~ 240V
Switchable
/22/25 : 220V ~ 230V
/30 : 240V
/15/33 : 220V
/37 : 120V
Mains frequency /22/25/30 : 50Hz
/15/21/33 : 50/60Hz
/37 : 60Hz
Power consumption
/22/25 : < 1W at ECO Standby
: < 7W at Standby
(DEMO mode off)
: 40W at Active
Clock accuracy : < 4 seconds per day
Dimension centre unit : 155 x 220 x 270mm
TUNER:
FM
Tuning range : 87.5-108MHz
IF frequency : 10.7MHz ±20kHz
Aerial input /15/21/22/25/37 : 75ΩCoaxial
/37 : 300ΩDipole
Sensitivity at 26dB S/N : < 22dBf
Selectivity at S9/300kHz : > 33dB
IF Rejection : > 60dB
Image Rejection : > 20dB
Distortion at RF=1mV, dev. 75kHz : < 3%
-3dB Limiting point : < 23.5dB
Crosstalk at RF=1mV, dev. 40kHz : > 26dB
Modulation Hum : > 45dB
AM Suppression I/P: 48~82dBf : > 30dB
AM (MW)
Tuning range
/15/21/22/25/30 : 531-1602kHz
/21/37 : 530-1700kHz
Grid /21 : 9kHz / 10kHz
/15/22/25/30 : 9kHz
/37 : 10kHz
IF frequency : 450kHz ±1kHz
Aerial input : Frame aerial 18.1µH
Sensitivity at 26dB S/N : < 3.25mV/M
Selectivity at S9/300kHz : > 15dB
AGC Figure of Merit : > 25dB
IF rejection : > 24dB
Image rejection : > 20dB
Distortion at RF=50mV, m=80% : < 5%
Mudulation Hum with REC or : > 40dB
Spurious Response Rejection : > 28dB
LW
Tuning range : 153-279kHz
Grid : 3kHz
IF frequency : 450kHz ±1kHz
Aerial input : Frame aerial 18.1µH
Maximum Sensitivity : < 1.5mV/M
Sensitivity at 26dB S/N : < 6.0mV/M
Selectivity at S9/300kHz : > 24dB
IF rejection : > 26dB
Image rejection : > 30dB
Distortion I/P:5~50mV : < 5%
Modulation Hum with REC or : > 40dB
AMPLIFIER:
Output power (6Ω, 1kHz, 10% THD) : 2X18W
Frequency response within -3dB : 60Hz-14kHz
Digital Sound Control (DSC) : Optimal,Classic,Jazz,
Rock
DBB : ON/OFF
Incredible Surround (IS) : ON/OFF
Input sensitivity (±3dB) for Rated Output Power at 1kHz
Aux in : 500mV; Rs=600Ω
Tuner in : FM67.5kHz, AM80%Modulation
CD in : -6dB track
Tape in : 250nWb/m
Output sensitivity
Headphone output at 32Ω:15mW ±1dB
CASSETTE RECORDER:
Number of track : 2 Tracks (Stereo)
Tape speed : 4.76 cm/sec ±2%
Wow and flutter : < 0.4% DIN
Fast-wind/Rewind time C60 : 130 sec
Bias system : 80Hz - 10kHz
Rec/Pb freq. response within 8dB : 78kHz ±10kHz
Signal to Noise Ratio (A-weighted) : > 48dBA
Distortion 250nWb/m : < 5%
Channel Difference at overall : < 4dB
COMPACT DISC:
Frequency response within ±3dB : 63Hz - 14kHz
Output level (in Vrms) : 500mV, Zout = 100Ω
Signal/Noise ratio (A-weighted): > 70dBA
Distortion at 1kHz : < 0.02%
Channel unbalance at 1kHz : < ±2dB
Channel separation at 1kHz : > 55dB
Emphasis : 15/50 µS (switched
automatically by CD10)
THD Noise(1kHz) : > 70dB
Outband Attenuation : > 20dB for Frequency
> 40kHz

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

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