Philips MCD-705 Service manual

Version 1.0

MCD705

Service Manual

DVD Micro System

all versions

Published by LX 0539 Service Audio Printed in The Netherlands Subject to modification

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.

Handling chip components ............................................................1-1

Information about lead-free soldering............................................1-2

Technical specification...................................................................2-1

Service tools..................................................................................2-1

Service measurement setup..........................................................2-2

Connections and controls......................................................3-1...3-4

Disassembly diagram............................................................4-1...4-2

Software version and upgrading....................................................5-1

Set block diagram..........................................................................5-2

Set wiring diagram.........................................................................5-3

VFD BOARD

circuit diagram ..........................................................................6-1

layout diagram..........................................................................6-2

TUNER BOARD

circuit diagram ..........................................................................7-1

layout diagram..........................................................................7-2

layout diagram-amp box pcb assy............................................7-2

AMP BOARD

circuit diagram ..........................................................................8-1

layout diagram..........................................................................8-2

CPU BOARD

circuit diagram ..........................................................................9-1

layout diagram..........................................................................9-2

ALC VOLUME BOARD

circuit diagram ........................................................................10-1

layout diagram........................................................................10-2

DVD MPEG BOARD

circuit diagram..............................................................11-1...11-5

layout diagram........................................................................11-6

Exploded view diagram................................................................12-1

Mechanical partslist.....................................................................12-2

Electrical partslist...............................................................13-1...13-3

TABLE OF CONTENTS

CLASS 1

LASER PRODUCT

1 - 1

HANDLING CHIP COMPONENTS

1 - 2

INFORMATION ABOUT LEAD-FREE SOLDERING

Philips CE is producing lead-free sets from 1.1.2005 onwards.

IDENTIFICATION:

Regardless of special logo (not always indicated) one must treat all sets from 1 Jan 2005 onwards, according next rules:

Example S/N:

Bottom line of typeplate gives a 14-digit S/N. Digit 5&6 is the year, digit 7&8 is the week number, so in this case 2005 wk12

So from 0501 onwards = from 1 Jan 2005 onwards

Im portant note

: In fact also product s of year 2004 must be treated in this way as long as you avoid mixing solder-alloys ( leaded/ lead -free). So best to always use SAC305 and the higher temperatures belong to this.

Due to lead-free technology some rules have to be respected by the workshop during a repair:

• Use only lead-free solder alloy Philips SAC305 with order code 0622 149 00106. If lead-free solder-paste is required, please contact the manufacturer of your solder-equipment. In general use of solder-paste within workshops should be avoided because paste is not easy to store and to handle.

• Use only adequate solder tools applicable for lead-free solder alloy. The solder tool must be able

o To reach at least a solder-temperature of 40 o To stabilize the adjusted temperature at the solder-tip o To exchange solder-tips for different applications.

• Adjust your solder tool so that a temperature around

− is reached and stabilized at the solder joint. Heating-time of the solder-joint should not exceed ~ 4 sec. Avoid temperatures above 400 otherwise wear-out of tips will rise drastically and flux-fluid will be destroyed. To avoid wear-out of tips switch off un-used equipment, or reduce heat.

• Mix of lead-free solder alloy / parts with leaded solder alloy / parts is possible but PHILIPS recommends strongly to avoid mixed solder alloy types (leaded and lead-free). If one cannot avoid or does not know whether product is lead-free, clean carefully the solder-joint from old solder alloy and re-solder with new solder alloy (SAC305).

• Use only original spare-parts listed in the Service-Manuals. Not listed standard-material (commodities) has to be purchased at external companies.

• Special information for BGA-ICs:

- always use the 12nc-recognizable soldering temperature profile of the specific BGA (for de-soldering always use the lead-free temperature profile, in case of doubt)

- lead free BGA-ICs will be delivered in so-called 'dry-packaging' (sealed pack including a silica gel pack) to protect the IC against moisture. After opening, dependent of MSL-level seen on indicator-label in the bag, the BGA-IC possibly still has to be baked dry. (MSL=Moisture Sensitivity Level). This will be communicated via AYS-website. Do not re-use BGAs at all.

• For sets produced before 1.1.2005 (except products of 2004), containing leaded solder-alloy and components, all needed spare-parts will be available till the end of the service-period. For repair of such sets nothing changes.

• On our website www.atyourservice.ce.Philips.com

you find more information to:

∗

BGA-de-/soldering (+ baking instructions)

∗

Heating-profiles of BGAs and other ICs used in Philips-sets

You will find this and more technical information within the "magazine", chapter "workshop news".

For additional questions please contact your local repair-helpdesk.

SERVICE INSTRUCTION

1. Unplug the AC Power cord and connect a wire between the two pins of the AC Power plug.

2. Set the AC Power switch to the "on" position (keep the AC Power cord unplugged!).

3. Measure the resistance value between the pins of the AC Power plug and the metal shielding of the tuner or the aerial connection on the set. The reading should be larger than 4.5 Mohm (For U.S. it should be between

4.2 Mohm and 12 Mohm).

4. Switch "off" the set, and remove the wire between the two pins of the AC Power plug.

Safety regulations require that after a repair, the set must be returned in its original condition. Pay in particular attention to the following points:

· Route the wire trees correctly and fix them with the mounted cable clamps.

· Check the insulation of the AC Power lead for external damage.

· Check the strain relief of the AC Power cord for proper function.

· Check the electrical DC resistance between the AC Power Plug and the secondary side (only for sets which have a AC Power isolated power supply):

• Check the cabinet for defects, to avoid touching of any

inner parts by the customer.

2 - 1

TECHNICAL SPECIFICATIONS

GENERAL

Mains voltage

-/93

: :

Mains frequency

220V

-/61

220V 50 Hz

-/61

60 Hz

Battery

remote

:3 V (AAA x 2)

Power consumption

normal 52 W

Standby

:< 4 W

Dimension (W x H x D)

::147 x 232 x 223 mm Weight (excluding packing and batteries)

: 5.4 Kg

AMPLIFIER

Output power mains

subwoofer

mains

subwoofer

::5 x 20W

1 x 50W

Speaker impedance

:5 x 8 ohm

1 x 4 ohm

Frequency response

20 Hz - 20 kHz (±3dB)

TUNER - FM SECTION

Tuning range : 87.5 - 108 MHz IF frequency

: 10.7 MHz ± 0.02 MHz Sensitivity

:< 22 dBf at 26dB Selectivity

300kHz : > 3 3 dB

IF Rejection

:> 60 dB Image Rejection

:> 25dB Distortion

:< 3 %

Tuning Grid

100/50K Hz

Tuning Grid

9/10K Hz

TUNER - AM SECTION

Tuning range :

: :

531 - 1602 kHz

IF frequency

450 kHz ± 1 kHz

Sensitivity

≤ 3.25 mV/m at 26dB

Selectivity S9/300kHz

:> 12 dB :

IF rejection

:> 24 dB

Distortion

:< 5% :

Image rejection

:> 20 dB

DVD / MP3 / CD

Laser Type : Semiconductor Disc Diameter : 12cm / 8cm Video Decoding : MPEG-2 / MPEG-1 Signal System : PAL / NTSC Video S/N : 53 dB (min.) Composite Video Output : 1.0 Vp-p, 75 S-Video Output : Y - 1.0 Vp-p, 75

C - 0.286 Vp-p, 75 Audio DAC : 24 Bits / 96 kHz Frequency Response : 20 Hz - 20 kHz Channel Unbalance : <

2dB THD Noise : 0.5% No. of programmable tracks : 20 Signal-to-noise ratio : 70 dBA Channel separation : 40 dB (1 kHz)

: 35 dB (16 kHz) : 30 dB (20 kHz)

tal harmonic distortion : < 0.02% (1 kHz)

SERVICE TOOLS

Audio signal disc SBC 429.......................................................................4822 397 30184

Playability test disc SBC 444

...................................................................4822 397 30245

Test disc 5 (disc without errors ) + Test disc 5A (disc with dropout errors, black spots and fingerprints)

SBC 426/426A.....................................................................4822 397 30096

Burn in test disc (65 min. 1kHz signal at -30 dB level without “pause”)

.....4822 397 30155

anti-static table mat

large 1200x650x1.25mm 4822 466 10953

small 600x650x1.25m 4822 466 10958

anti-static wristband

4822 395 10223

connection box (3 press stud connections, 1MΩ) 4822 320 11307 extendible cable (2m, 2MΩ, to connect wristband to connection box) 4822 320 11305 connecting cable (3m, 2MΩ, to connect table mat to connection box) 4822 320 11306 earth cable (1MΩ, to connect any product to mat or to connection box) 4822 320 11308 KIT ESD3 (combining all 6 prior products - small table mat) 4822 310 10671 wristband tester 4822 344 13999

AVAILABLE ESD PROTECTION EQUIPMENT

2 - 2

SERVICE MEASUREMENT

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

Tuner SW

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).

Ri=50Ω

Aerial replacement

Capacitor

R=50Ω

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.

RF Generator

e.g. PM5326

Ri=50Ω

Low pass filter 22kHz

LEVEL METER

e.g. Sennheiser UPM550

with FF-filter

S/N and distortion meter

e.g. Sound Technology ST1700B

DUT

Use Audio Signal Disc SBC429 4822 397 30184 (replaces test disc 3) L.P.F. = 13

order filter 4822 395 30204

3 - 1

CONNECTION AND CONTROLS

3 - 2

CONNECTION AND CONTROLS

3 - 3

CONNECTION AND CONTROLS

3 - 4

CONNECTION AND CONTROLS

4 - 14 - 1

D2 D3

A.Remove Bottom Cover A1.remove screws M2.5x4(8pcs)

B*.remove screws M3x10(8pcs) and M3x8(3pcs) C*.remove screws M3x8(4pcs) and T3x4(2pcs)

*M2.5x5

*M2.6x8

D.Remove Back Panel D*remove screws T3x4(5pcs)and M3x10(5pcs)and T3x8(1pc)

E. Remove Top Cover

G. Remove DVD Rom and then remove DVD Decoder Card Assy

I.Remove VFD board assy

H.Remove Slid Plank

I.Remove Side metal Plate

DISASSEMBLY DIAGRAM - DVD PART

4 - 2 4 - 2

A.Remove Bottom Cover A1.remove screws M2.5x4(8pcs)

B*.remove screws M3x10(6pcs) and T3x10(4pcs) C*.remove screws T3x4(5pcs)

D.Remove Back Panel D*remove screws T3x4(4pcs)and T3x8(2pcs)and M3x10(6pcs)

E. Remove Top Cover

F. Remove AMP Board Assy

*M2.5x5

*M2.6x8

H.Remove AMP Front board assy

G.Remove ALC Volume board assy

I.Remove Side metal Plate

DISASSEMBLY DIAGRAM - AMP PART

+ 24 hidden pages

Philips MCD-705 Service manual

Specifications and Main Features

Frequently Asked Questions

User Manual