Philips FWD185 Schematic

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Service

Service Manual

TABLE OF CONTENTS

Service news letter .............................................1-1...1-4

Location of PC

Versions Variation & Package .

Specification

Repair Instruct

Disassembly Instructions &

Block & Wiring Diagram ................................................ 4

Control Board ................................................................. 5

Main Boar

Power Boar

DVD loader....................................................................8

Mechanical Exploded View & Parts.............................. 9

Service partlist..............................................................10

F actory partlist..............................................................11

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 DB Service Audio Printed in The Netherlands Subject to modification

Version 1.0

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d .................................................................. 7

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Service positi

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3141 785 31870

Service Newsletter 2002 – BCU Audio 1/4

For internal use only PHILIPS

ISSUE SNL2002.09 (02-12-06)

Published by: Service Depar tment Audio

BUSINESS CREATION UNIT AUDIO

General Information

This special edition contains instructions on CD-applications with playability problems (i.e. skipping tracks).The information shows how to check the playability of the set, how to clean the lens, and how to measure if some important drive parameters like jitter, laser current and offset values are (still) within the specification.

Background for this information are extensive analyses on replaced CD-drives. It has been found that a lot of replaced drives were not defective at all, respectively were replaced for the wrong reason.We are convinced that the procedures on the next pages will help to reduce the number of erroneously replaced drives drastically and request you to deploy the instructions to the workshops urgently.

SERVICE NEWSLETTER

1-1

Service Newsletter 2002 – BCU Audio 2/4

Set remains closed!

Standard repair procedure

Play a CD

for at least 10 minutes

playability

ok ?

playability

ok ?

add Info for customer

"SET OK"

playability

ok ?

check playability

playability

ok ?

check playability

EYE-Pattern

ok ?

check "EYE-Pattern"

replace CD Drive

Laser current

ok ?

check Laser current

CD Drive offsets

ok ?

check CD Drive offsets

clean the lens

check playability

return set

Customer complaint

"CD related problem"

return set

replace CD Drive

return set

replace CD Drive

return set

replace Signal Processor

return set

"fast" lens cleaning

For flap loaders (= access to CD drive possible) cleaning method

is recommended

For description - see following pages

1-2

Service Newsletter 2002 – BCU Audio 3/4

PLAYABILITY CHECK

For sets which are compatible with CD-RW discs

use CD-RW Printed Audio Disc....................7104 099 96611

TR 3 (Fingerprint) TR 8 (600µ Black dot)

maximum at 01:00

• playback of these two tracks without audible disturbance playing time for: Fingerprint

≥

10seconds

Black dot from 00:50 to 01:10

• jump forward/backward (search) within a reasonable time

For all other sets

use CD-DA SBC 444A..................................4822 397 30245

TR 14 (600µ Black dot)

maximum at 01:15

TR 19 (Fingerprint) TR 10 (1000µ wedge)

• playback of all these tracks without audible disturbance playing time for: 1000µ wedge

≥

10seconds

Fingerprint

≥

10seconds

Black dot from 01:05 to 01:25

• jump forward/backward (search) within a reasonable time

CUSTOMER INFORMATION

It is proposed to add an addendum sheet to the set which informs the customer that the set has been checked carefully - but no fault was found. The problem was obviously caused by a scratched, dirty or copy-protected CD. In case problems remain, the customer is requested to contact the workshop directly. The lens cleaning (method 3) should be mentioned in the addendum sheet.

The final wording in national language as well as the printing is under responsibility of the Regional Service Organizations.

FAST LENS CLEANING (dry brush)

Use lens cleaning CD

SBC AC300...........................................9082 100 00043

Insert the lens cleaning CD, press PLAY and follow the voice guide´s instructions on the CD.

LIQUID LENS CLEANING

Because the material of the lens is synthetic and coated with a special anti-reflectivity layer, cleaning must be done with a non-aggressive cleaning fluid. It is advised to use “Cleaning Solvent B4-No2”, available with codenumber 4822 389 10026.

The actuator is a very precise mechanical component and may not be damaged in order to guarantee its full function. Clean the lens gently (don’t press too hard) with a soft and clean cotton bud moistened with the special lens cleaner.

The direction of cleaning must be in the way as indicated in the picture below.

Before touching the lens it is advised to clean the surface of the lens by blowing clean air over it. This to avoid that little particles make scratches on the lens.

1-3

Service Newsletter 2002 – BCU Audio 4/4

EYE-PATTERN SIGNAL – JITTER MEASUREMENT

Measure the signal on the input of the Signal processor using an analog oscilloscope. Please find the exact measuring point in your Service Manual.

See below examples of the signal. Amplitude should read at least 700mVpp using SBC444A.

good

bad

If the oscilloscope shows a signal like the ‘bad’ one, and/or the amplitude decreases within 1 minute - the CD drive has to be replaced.

CD DRIVE – LASER CURRENT MEASUREMENT

The laser current can be measured as a voltage drop on a resistor. The resistor is marked in every Service Manual. The value depends on the type of CD drive.

typical value most probably defect

VAMxxxx : 150-230mV ≥350mV MCDxx : 170-230mV ≥300mV DA1x : 210-250mV ≥350mV DA2x : 175-200mV ≥250mV Use SBC444A (CD-DA) for measurement.

CD DRIVE – OFFSET MEASUREMENT

The photodiodes of the CD-drive may have an offset. These offsets have to be compensated by the signal processor. High offsets can lead to poor playability of some CDs (skipping tracks).

To measure the offset values, start the

Service Test

Program

- section “Focus Test” without a CD.

The offsets can be measured with a DC Millivoltmeter directly on the connector (see drawing below). Pin numbering varies from drive to drive.

The values from diode A-D should read 0±10mV. Diodes E and F are less critical.

If one of the offsets is higher than ±10mV the CD drive has to be replaced. Otherwise replace the Signal Processor.

Sanyo DA12T3

CD Drive

VCC

VREF

1800

+5V_HF

VrefCD10

B C

GND

Laser power control

100n

2878

470n

2876

3821

3823

2880

33p

+5V

BC807-40

7879

3817

47R

3820

4R7

47R

3819

2879

2877

47u

7811-A

LM358D

10K

3822

47R

3818

2841

100n

47n

2869

+5V_HF

LASER DIODE

U >250mV

->Laser damaged !

4,6V

3,3V

3,9V

0,17V

Sanyo DA12T3

HF-Amplifier

680R

3905

3903 3K3

BC847B

7877

47n

2818

1K5

3902

470R

3893

+3.3V

2K2

3908

10K

3923

BC847B

7878

BC847B

7876

4n7

2813

3896 100R

220u

2885

2881 560p

47n

2887

560R

3901

2883 470n

2817

4u7

3n3

2814

3898 220R

3895

27K

470n

2884

+3.3V

3909

820R

3907

100R

3920

33K

3897

2882

82p

3K3

3904

2K7

3899

3906

470R

+5V_HF

HFIN

VrefCD10

100p

2815

2816

22n

LDON to 3826,3827

VREF GE

VDDA1

VRIN

VSSA1

ISLICE

HFIN

HFREF

IREF

CD_DA: 0V / CD_RW: 3V

(A-D)

800mVpp

TB = 0.5

s/div

EYE-PATTERN

1,8V

1,2V

2,4V

2,6V

0,65V

1-4

LOCATION OF PCB BOARDS

1-5

CONTROL CPB

MAIN PCB

TUNER

POWER PCB

VERSION VARIATION:

Type/Version

Feature & Board in used

Total output power (100W)

Composite video out

USB PCB

FWD185

/ 98

S-Video out

SPECIFICATION

1-6

AMPLIFIER SECTION

Output power .................................................... 1800 W PMPO

Stereo mode ....................................................... 2 x 50 W RMS

Frequency Response .......................... 50 Hz - 18 kHz / ± 3 dB

Signal-to-Noise Ratio Input Sensitivity

AUX In ................................................................ ......... 600 mV

Output Sensitivity

Headphone ............................................................25 mV + 1dB

Line Out ..................................................... (CD mode)2 + 0.2 V

TUNER SECTION

Tuning Range ...........................................................................

.......................................... FM 87.5 – 108 MHz ( 50 kHz steps)

............................................ MW 531 – 1602 kHz (9 kHz steps)

...........................................MW 530 – 1700 kHz (10 kHz steps)

Signal-to-Noise Ratio ...............................

............................................................................... MW ≥ 35 dB

TAPE SECTION

Frequency Response

Normal tape ............... ......................... 80 – 12500 Hz ( +8 dB)

Signal-to-Noise Ratio

Normal tape ................................................ ............... ≥ 45 dBA

JIS and WTD ................................................................. ≤ 0.3%

DVD SECTION

Laser Type ................................................ ....... Semiconductor

Disc Diameter .............................................. .......... 12cm / 8cm

Video Decoding ........................................ MPEG-2 / MPEG-1/

Divx 3/4/5/6, Ultra

Video DAC ................................................................ .... 12 Bits

Signal System ...............................................

Video Format ..................................................... ....... 4:3 / 16:9

Video S/N ...................................................... 56 dB (minimum)

Composite Video Output .................................. 1.0 Vp-p, 75 Ω

S-Video Output ............................. ............... Y - 1.0 Vp-p, 75 Ω

................................................................. C - 0.286 Vp-p, 75 Ω

Audio DAC .......................................... ............ 24 Bits / 96 kHz

Frequency Response ........................ 4 Hz - 20 kHz (44.1kHz)

............................................................... 4 Hz - 44 kHz (48kHz)

..............................> 62dB (A-WEIGHED)

...............FM ≥ 50 dB

........ PAL / NTSC

MAIN UNIT

Power Supply Rating .............................................. 110 - 240 V

.................................................................. 50/60HZ Switchable

Power Consumption

Active ................................................................................. 50 W

Standby ..........................................................................<10 W

Dimensions (w × d × h)

Weight ............................................................................3.91 kg

Packaging Dimensions (w × d × h) ...........................................

......................................................... ........ 569 x497 x 413(mm)

Gross weight

SPEAKERS

Front speakers System

Impedance ............................................................................ 8 Ω

Speaker drivers ...................................................13 cm woofer,

................................................................................5cm tweeter

Frequency response .......................................... 55 Hz – 20 kHz

Dimensions (w × d × h)

................................................................222 × 223 × 310 (mm)

Weight ...................................................................3.02kg/each

Speci cations subject to change without prior notice

.................................................................... 13.1g

......................................................... 2-way, Bass re ex

........................... 265× 335 × 310 (mm)

..............................................................

System , Region Code , etc. Setting Produre

2 - 12 - 1

1)System Reset

a) press “Setup “ buttom on R/C,TV will show the preference page

b) select the menu using the and

c) go preference page to do sysytem reset

2)Region Code Change

a) press the “stop” buttom on R/C in open model

c) press”7” “3“ “4“ “4“ “6“ “6“ on R/C, then, TV will show the current

region code.

3 APAC

4 Australia ,NZ , Latam

3)Version Control Change

a) In open model, press “1“ “5“ “9“ on R/C

b) press “ok” buttom to com rm

c) TV will show message as below:

Current model 185-98

Mtk Ver:07.04.17.01 region : 3

Mcu Ver:1.28 Servo: 6A.52.00.00

8032: 05.00.06.05 RISC: 05.00.06.05

IF current model does not match you set use down arrow

key on the remote to change

on R/C

6)Upgrading new sofeware

a)open the CD Door,then insert the CD-R program disc

b)close the DOOR

c) TV will show:

“loading“

pop message“upgrading“

“writing” about 2 minutes

“done “

* the latest upgraded is in version VER 07.04.17.01

CAUTION! This information is conﬁ dencial and may not be distributed .Only a qualiﬁ ed service person should reprogram the region code.

4)Password Change

a) press “Setup “ buttom on R/C,TV show the preference page

b) select the menu using the and

c) go preference page select “password“ to change

* 000000 is default password supplied.

5)Check on the Sofeware Version

a)open the CD Door

b) press “display“ buttom on R/C

c) TV will show the version on screen

on R/C

REPAIR INSTRUSTRATOR

2 - 22 - 2

3 - 1 3 - 1

 gure 3

DISASSEMBLY INSTRUCTIONS

Dismantling the DVD Module

1) Loosen 2 screws ”A” at both sides as shown in  gure 1 & remove 6 screws ”B” as shown in  gure 2 to remove top & side cover

 gure 1

 gure4

 gure 5

 gure 2

2) Push the gear slowly towards the front as shown in  gure 3 until the DVD tray move out of the front cabint. now the DVD tray is disengaged and can be pulled out completely.

3) Remove the cover Tray as shown in  gure 4.

4) Loosen the 4 screw ”C” as shown in  gure 5 to remove DVD loader bracket

5) Loosen the 4 screws ”D” at DVD loader as shown in  gure 6

 gure 6

Dismantling the Power Board

1) Loosen 4 screws “D“ on the top of board as shown in  g ure 7

 gure 7

 gure 8

 gure 10

 gure 9

Dismantling the Main Board

1) Loosen 7 screws “F“ at back panel as shown in  gure 8

2) Loosen 1 screw “G“ at bottom panel as shown in  gure 9

3) Loosen 1 screw “H“ on the board as shown in  gure 10

Dismantling the Contorl Board

1) Loosen 17 screws “I“ on the Board as shown in  gure 11

SERVICE POSITION

service A

service B

Note: After re-assembly ,it is very important to ensure the wires are properly inserted into their respective sockets and routed

not to touch or obstruct any moving parts.

 gure 11

3 - 2 3 - 2

BLOCK DIAGRAM

4 - 1

WIRING DIAGRAM

4 - 2

5 - 1 5 - 1

CONTROL BOARD

FTD DISPLAY PIN ASSIGNMENT

TABLE OF CONTENTS

FTD Display Pin Assignment ............................................................. 5-1

Circuit Diagram .................................................................................. 5-2

PCB Layout Top & Bottom View ........................................................ 5-3

PIN CONNECTION

CIRCUIT DIAGRAM

5 - 2 5 - 2

1234

PCB LAYOUT - TOP VIEW

5 - 3

PCB LAYOUT - BOTTOM VIEW

1234

5 - 4 5 - 4

1234

6 - 1 6 - 1

Front-panel Remote

MAIN BOARD

INTERNAL IC DIAGRAM-MT1389 FXT

TABLE OF CONTENTS

Internal IC Diagram ...........................................................................6-1

Circuit Diagram .................................................................................. 6-2

PCB Layout Top View .......................................................................6-3

PCB Layout Bottom View .................................................................. 6-4

Front-panel Remote

INTERNAL IC DIAGRAM-CO4558A

Circuit Diagram

6 - 2 6 - 2

1234

PCB Layout Top View

6 - 3 6 - 3

123

PCB Layout Bottom View

6 - 4 6 - 4

123

7 - 1 7 - 1

INTERNAL IC DIAGRAM -AP3843

VCC

34V

UVLO

S/R

GND

5V REP

REF

POWER BOARD

TABLE OF CONTENTS

IC Diagram ........................................................................................7-1

Circuit Diagram .................................................................................. 7-2

PCB Layout Top View .......................................................................7-3

PCB Layout Bottom View .................................................................. 7-4

T/CT

COMP

2.50V

VREF GOOD

OSC

LOGIC

OVER TEMP PROTECT

CURRENT SENSE COMPARATOR

PWM LATCH

ERROR AMP

INTERNAL BIAS

OUTPUT

INTERNAL IC DIAGRAM -AZ431

CATHODE

REF

ANODE

CIRCUIT DIAGRAM

7 - 2 7 - 2

1234

PCB LAYOUT - TOP VIEW

7 - 3

PCB LAYOUT - BOTTOM VIEW

1234

7 - 4 7 - 4

1234

8 - 1

DVD BOARD

TABLE OF CONTENTS

EXPLORER VIEW ............................................................................. 8-2

MECHANICAL PART LIST ................................................................ 8-3

EXPLORER VIEW

8 - 2

MECHANICAL PART LIST

Loc. Part No. Description

1 BPB206008-0001 LOADER BASE

2 BPM206004-0001 LOADER TRAY

3 BPH206013-0001 FRAME

4 BPH206012-0001 CAM

5 ASLHRT22S-0009 TRAVERSE

6 DUF203601-0001 FRONT DAMPER

7 DUF203600-0001 REAR DAMPER

8 BPG206006-0001 GEAR-G

9 FMT020201-0001 TRAY MOTOR

10 GSE206004-0001 CLAMPER TOP

11 GMA260000-0001 MAGNET

12 BPG206015-0001 CLAMPER 10WN

13 BPG206014-0001 GEAR PULLEY

14 BPG206013-0001 GEAR-TRAY

15 MSW007001-0020 LIMIT SWITCH

16 CCN200000-0505 CONNECTOR

17 LVC260100-0001 PCB

18 BRW206003-0001 BELT

19 HSW248004-1060 SCREW

20 HSP258004-1050 SCREW

21 HSD248004-1111 SCREW

22 HSW250301-1080 SCREW

23 HSP243174-1042 SCREW

8 - 3

Mechanical Exploded View

9 - 19 - 1

+ 65 hidden pages