Philips FW-V720 User manual

GB
CLASS 1
LASER PRODUCT
COMPACT
DIGITAL AUDIO
Service Manual
Service
Service
Service
FW-V720/21M
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 .......................................................2-1
Disassembly Instructions & Service positions ...........3-1
Service Test Programs ...............................................3-4
Set Block diagram ......................................................4-1
Set Wiring diagram .....................................................4-2
Front Control Board ....................................................... 5
Front Display Board ....................................................... 6
ECO6 Tuner Board : Systems Non-Cenelec .............. 7A
VCD-MPEG-01B Module ............................................... 8
ETF7 ND Tape Module .................................................. 9
3CDC-LC-VCD Module ............................................... 10
Power 2001 Module (30-70W Version) ....................... 11
Center/Surround & Matrix Surround Socket Board...11A
AF9 Board .................................................................... 12
VCD GND Isolator Board ............................................ 13
Set Mechanical Exploded view & parts list ................. 14
©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 BB 0119 Service Audio Printed in The Netherlands Subject to modification
Mini System
3139 785 22840
www.freeservicemanuals.info
1/3/16
Published in Heiloo, Holland.

HEADPHONE
BOARD
ETF7
BOARD
MAINS
BOARD
POWER
BOARD
MAINS SOCKET
BOARD
MATRIX SURROUND
SOCKET BOARD
TUNER
BOARD
VIDEO OUT
CINCH BOARD
KEY-CDC BOARD
KARAOKE
BOARD
FRONT
DISPLAY
BOARD
IR-EYE
BOARD
VU
METER
BOARD
FRONT
CONTROL
BOARD
VCD GND
ISOLATOR BOARD
AF9
BOARD
CD
BOARD
1-2
LOCATION OF PRINTED CIRCUIT BOARDS
/21M
Aux in /CDR in x
Line Out
Surround Out
Subwoofer Out
Digital Out
Video Out x
Matrix Surround x
CD Text
Dolby B
RDS
News
Dolby Pro Logic (DPL)
Incredible Surround x
Karaoke Features x
Voltage Selector x
ECO Power Standby (Clock Display Off)
ECO6 Tuner Board - Systems Non-Cenelec x
ECO6 Tuner Board - Systems Cenelec
Center/Surround Channel
VERSION VARIATIONS:
Type /Versions: FW-V720
Features &
Board in used:
www.freeservicemanuals.info
1/3/16
Published in Heiloo, Holland.

1-3
SPECIFICATIONS
GENERAL:
Mains voltage : 110-127V / 220-240V Switchable
Mains frequency : 50/60Hz
Power consumption : 15W at Standby
:120W at Active
Clock accuracy : < 4 seconds per day
Dimension centre unit : 265 x 310 x 390mm
TUNER:
FM
Tuning range : 87.5-108MHz
Grid : 50kHz
IF frequency : 10.7MHz ±25kHz
Aerial input : 75Ωcoaxial
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
Grid : 9kHz / 10kHz
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%
AMPLIFIER:
Output power (6Ω, 1kHz, 10% THD)
L & R : 2 x 60W RMS
Surround : 2 x 7W
Frequency response within -3dB : 40Hz-20kHz
Digital Sound Control (DSC) : Digital, Rock, Pop,
Newage, Classic, Electric
Virtual Ambience Control (VAC) : Hall, Concert, Cinema,
Disco, Arcade, Cyber
Incredible Surround (IS) : ON/OFF
WOOX : Level 1, 2, 3 & OFF
Input sensitivity
Aux in : 500mV ±3dB at 1kHz
CDR in : 1V ±3dB at 1kHz
Microphone : 3.5mV
Output sensitivity
Headphone output at 32Ω:15mW
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
VIDEO CD
Audio Performance:
Measurement done at output conn. of the CDC module.
Frequency response within ±1.5dB : 20Hz - 20kHz
Output level (in Vrms) : 500mV, Zout = 100Ω
Signal/Noise ratio (A-weighted) : > 80dBA
Distortion at 1kHz : < 0.003%
Channel unbalance at 1kHz : ±1dB
Channel separation at 1kHz : > 60dB
De-emphasis : 0 or 15/50 mS (Switched
by subcode on the disc)
MP3-CD bit rate : 32 - 256kbps
Sampling Frequencies : 32kHz, 44.1kHz, 48kHz
Video Performance:
Video output level : 1.0 ±0.2Vp-p
Luminance non-linear distortion : < 0 ±5%
Luminance S/N ratio : > 50dB
www.freeservicemanuals.info
1/3/16
Published in Heiloo, Holland.

1-4
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
www.freeservicemanuals.info
1/3/16
Published in Heiloo, Holland.

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
1-5
HANDLING CHIP COMPONENTS
www.freeservicemanuals.info
1/3/16
Published in Heiloo, Holland.