Philips FWD876 Schematic

DVD Mini System

FWD876/55/98/58

TABLE OF CONTENTS

Page

Location of PC Boards .........................................................1-2

Specifi cations .......................................................................1-3

Measurement Setup .............................................................1-4

Service Aids, Safety Instruction, etc .....................................1-5

CD Playability Check .................................................1-6 to 1-8

Repair Instructions...................................................................2

Disassembly Instructions & Service positions ......................... 3

Set Block Diagram ................................................................4-1

Set Wiring Diagram ..............................................................4-2

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

Tuner Board .............................................................................6

Power Board ............................................................................7

Main Board .............................................................................. 8

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

Revision List ..........................................................................10

VIDEO CD

©

Copyright 2007 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-ET 0723 Service Audio Printed in The Netherlands Subject to modification

Version 1.1

CLASS 1

LASER PRODUCT

© 3141 785 31191

LOCATION OF PCB BOARDS

TUNER

DOOR SW PCB

DOOR GEAR PCB

MAIN PCB

CONTROL PCB

1-2

MAIN PCB

POWER PCB

LED PCB

USB PCB

MIC PCB

POWER PCB

MAIN UNIT

VERSION VARIATION :

SUBWOOFER

Type / Versions: FWD876

Features & Board in used /98

Total Output Power ( 600W ) x

Composite video out X

Power voltage (110 ~ 127 - 220~240v) Dual voltage X

AC cord (detachable) X

Active Subwoofer

X

SPECIFICATION

4(05<50;

AMPLIFIER SECTION

Total output power ........................................ W PMPO

Stereo mode ..... 80x5W+200W=600W RMS

Frequency Response . 150 Hz - 18 kHz / ± 3 dB

Signal-to-Noise Ratio .......... > 62dB (A-weighted)

Input Sensitivity

AUX In ............................................................. 1000 mV

TUNER SECTION

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

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

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

....................... MW 530 – 1710 kHz (10 kHz steps)

Signal-to-Noise Ratio ................................ FM ≥ 50 dB

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

1-3

Weight .......................................................................... 5.5 kg

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

...................................................... 565 x 627 x 397 (mm)

SPEAKERS

Front speakers

System ................................................... 3-way, Bass reflex

Impedance ........................................................................ 4 Ω

Speaker drivers .................................... 2x13cm woofer

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

............................... 8cm middle range on tunable spk

Frequency response ........................ 50 Hz – 20 kHz

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

........................................165.2 × 554.04 × 283.2 (mm)

Weight ............................................................... 13.5kg/each

TAPE SECTION

Frequency Response

Normal tape ....................................... 80-12500 Hz

Signal-to-Noise Ratio

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

Wow and flutter .................................................. ≥ 0.35%

DVD SECTION

Laser T

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

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

Video DAC ................................................................ 10 Bits

Signal System ............................................... PAL / NTSC

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 - 0.714 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 - 22 kHz (48kHz)

...................................................... 4 Hz - 44 kHz (96kHz)

................................................ Semiconductor

ype

Center or Surround speakers

System.....................................2 m

Impedance.....................4 Ω (center) /4 Ω(surround)

Speaker drivers................1x4” full range (surround)

...........................................................2x3”full range(center)

Frequency response .........................150HZ--18KHZ

Dimensions(w x h x d)......................................................

.........165.2x 138.6 x 161.9mm(surround speaker)

..............190.2 x109.7x 144.9mm (center speaker)

Weight ..................................1.425 kg (center speaker)

................................1.002kg/ each (surround speaker)

SUBWOOFER

Impedance............................................................................6 Ω

Speaker driver..............................................................200W

Frequency response. .................................. 30-200 HZ

Dimensions(w x h x d )................................................

................................................230 x 551.5 x 317.5 (mm)

Weight ......................................................................10.77 kg

ulti directional dr

iver

MAIN UNIT

Gross weight ............................................................. 21.5Kg

Power Supply Rating ...... 110 - 127 / 220 - 240 V

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

Power Consumption

Active ...................................................................... 100 W

Standb

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

................................................190.6× 411.8× 315.2(mm)

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

y

60/50HZ Switchab

le

MEASUREMENT SETUP

Tuner FM

1-4

Bandpass

LF Voltmeter

e.g. PM2534

RF Generator

e.g. PM5326

DUT

250Hz-15kHz

e.g. 7122 707 48001

Ri=50Ω

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).

Tuner AM (MW,LW)

RF Generator

e.g. PM5326

Ri=50Ω

DUT

Frame aerial

e.g. 7122 707 89001

Bandpass

250Hz-15kHz

e.g. 7122 707 48001

LF Voltmeter

e.g. PM2534

S/N and distortion meter

e.g. Sound Technology ST1700B

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).

CD

Use Audio Signal Disc
(replaces test disc 3)

DUT

L

R

SBC429 4822 397 30184

S/N and distortion meter

e.g. Sound Technology ST1700B

LEVEL METER

e.g. Sennheiser UPM550

with FF-filter

Recorder

Use Universal Test Cassette CrO2 SBC419 4822 397 30069

or Universal Test Cassette Fe SBC420 4822 397 30071

LF Generator

e.g. PM5110

DUT

L

R

S/N and distortion meter

e.g. Sound Technology ST1700B

LEVEL METER

e.g. Sennheiser UPM550

with FF-filter

SERVICE AIDS

1-5

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

GB

All ICs and many other semi-conductors are
susceptible to electrostatic discharges (ESD).
Careless handling during repair can reduce life
drastically.
When repairing, make sure that you are
connected with the same potential as the mass
of the set via a wrist wrap with resistance.
Keep components and tools also at this
potential.

WARNING

GB

Safety regulations require that the set be restored to its original
condition and that parts which are identical with those specified,
be used

Safety components are marked by the symbol

!

.

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

CLASS 1

LASER PRODUCT

Lead free

INSTRUCTIONS ON CD PLAYABILITY

Customer complaint

"CD related problem"

Set remains closed!

check playability

1

1-6

playability

ok ?

Y

Play a CD

for at least 10 minutes

check playability

playability

ok ?

Y

N

"fast" lens cleaning

check playability

playability

ok ?

N

3

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

4 is recommended

Standard repair procedure

N

Y

clean the lens

check playability

playability

ok ?

check "EYE-Pattern"

4

Y

N

5

return set

add Info for customer

"SET OK"

return set

1 - 7

For description - see following pages

2

replace Signal Processor

return set

EYE-Pattern

ok ?

Y

check Laser current

Laser current

ok ?

Y

check CD Drive offsets

Y

CD Drive offsets

ok ?

N

replace CD Drive

6

return set

N

replace CD Drive

7

return set

N

replace CD Drive

return set

INSTRUCTIONS ON CD PLAYABILITY

1-7

1

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

4

LIQUID LENS CLEANING

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.

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.

2

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.

3

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.

Sanyo DA12T3

CD Drive

A

A

F

C

B

E

C

D

E

VCC

B

VREF

F

D

9

10

11

12

13

14

15

16

1800

+5V_HF

VrefCD10

A

D

E

B
C

F

GND

8

E

D

A

B

C

F

Laser power control

100n

2878

470n

2876

3821

1R

1K

3823

2880

33p

+5V

BC807-40

7879

3817

47R

3820

4R7

47R

3819

1n

2879

2877

47u

1

8

4

7811-A

LM358D

3

2

10K

3822

47R

3818

2841

100n

47n

2869

+5V_HF

LASER DIODE

U >250mV

->Laser damaged !

4,6V

3V

3,3V

3,9V

2V

0,17V

0,17V

Sanyo
DA12T3

HF-Amplifier

D3

D2

D1

680R

3905

3903
3K3

BC847B

7877

47n

2818

1K5

3902

5

7

4

2

1

6

3

64

8

9

10

11

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

28152816

22n

LDON
to 3826,3827

VREF GE

VDDA1

VRIN

VSSA1

ISLICE

LD

ON

D1

D2

D3

D4

HFIN

HFREF

IREF

CD_DA: 0V / CD_RW: 3V

Σ (A-D)

800mVpp

TB = 0.5µs/div

EYE-PATTERN

1,8V

1,2V

2,4V

2,6V

0,65V

INSTRUCTIONS ON CD PLAYABILITY

1-8

5

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.

6

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.

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.

good

bad

7

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.

System ,Region code,etc.setting procdure

2-1

2-1

1) System Reset

a) Press "SYSTEM" button on R/C. TV show "SETUP"

b) Select the menu using the "

c) Go feature setup page to do system reset

2) Region Code Change

a) Press "STOP" button on R/C in open model

b) Press "7" "3" "4" "4" "6" "6" , the below message will be

shown on TV screen:

" and " " button on R/C

CHANGE REGON PAGE

Use up/ down to select region from 0 to 6

Current Region : 2

CONFRIM

Press "OK" to confirm

6) Upgrading new software

a) Open the door, then insert the CD-R program disc.

b) Close the door.

c) TV will show:-

.

"disc loading"

.

"bank30.rom"

.

"writing" about 6 seconds.

.

"Done"



The latest upgraded is in version VER : 06-08-28-2





CAUTION !

This information is confidencial and may not be
distributed. Only a qualified service person should
reprogram the Region Code.

3) Version Control Change

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

b) Press "OK" button on R/C to confirm

c) TV will show the message as below :

Version Setup Menu

Current Model: FWD876/98

DVD-Ver : 06-08-28-2 MCU-VER : 1.14

Ess Software : 5.1 .51.1

Servo:68230

If current model does not match your set,

use down-arrow key on remote to change.

Press "OK" to confrim

4) Password Change

a) Press "SYSTEM" on R/C button

b) Select the menu using the " " and " " button on R/C

c) Go feature setup page select "PASSWORD". TV show

"ENTER CODE".Press 4 times of "STOP" button on R/C.

d) Select "PARENTAL" "8 ADULT" on TV.

e) Enter PASSWORD to "1234".



"1234" is a default password supplied.





5) Checking on the Software version

a) Open the CD door.

b) Press "159" and "OK" on the remote control.

c) TV will show the version on screen

REPAIR INSTRUCTIONS ( MAIN UNIT )

2-2

2-2

MAIN UNIT REPAIR CHART 1/3

A C E G

ALL FUNCTION

NO WORKING

A

All f unction

No working

Checkall system

all cable is loose

or bad INT

NO

Panel stanby LED

show working or Not

B

VFD DISPLAY

NO SHOW

AND KEY

FUNCTION

YES

NO

POWERSUPPLY

NO WORKING

RE-i nsert and fix

the cable

Checkback power PCB

F90 1 bad cause damage

YES

CheckCN953

5V if right

NO

BAD

D

LINE

AUDIO

NO OUTPUT

ChangeF901

Check+5V power

supply circuit

DIGITAL LINE

NO OUTPUT

VFD display No show

and key function

Checkcontrol pcb

RB300,RB301cable

loose or bad INT

DVD NO VIDEO

B

NO

F H

MIC FUNCTION

NO WORKING

YES

USB FUNCTION

NO WORKING

RE-i nsert and fi x

the cable

TUNER FUNCTION

NO WORKING

C

Power supply

No working

All voltage

No output

I

NO

J

AUX IN NO SOUND

+12V No output

+5V No output

K

TAPE FUNCTION

NO WORKING

CheckD959 and its

conjoint part

CheckD960 and its

conjoint part

WORK

CheckRB102

Pin5=5V

CORRECT

Checkall Voltage

3.3V and 1.5V
give circuit

NO

CHECK

YES

YES

Checkrepair control

PCB Standb y circuit

Checkrepair switch

power circuit (about B)

VCC=5V

VCC33=3.3V

VDD=1.5V

CheckIC106 Pin203

Pin186(osc

frequency 27MHz)

YES

Repairmain pcb between

U107 to IC106

circuit

ChecktestRB300

Pin4=-24V Pin5=5V

Pin9,8=AC3.5V

NO

Checktest RB301

Pin3/CLK,Pin4/DATA

and pin2/CE

YES

CheckVFD control

PCB se ct ion bad

cause damage

NO

NO

Checkback power

PCB power supply

circuit

CheckIC106

AND IC300

YES

CheckF901 bad

CauseDamage

YES

ChangeF901

-27V No output

CheckD963 and its

conjoint part

2-3

REPAIR INSTRUCTIONS ( MAIN UNIT )

2-3

MAIN UNIT REPAIR CHART 2/3

D

Audio line

No output

Check JK700 is

good or bad

OK

Check IC500

pin8=12V

pin4=-12V

BAD

NO

Change JK700

Check12V

supply circuit

E

Digital line

No output

Check JK102 is

good or bad

OK

check IC109

pin14= 5V

BAD

NO

Change

JK102

Check 5V

supply circuit

F

DVD

No Video

CheckJK100 is

good or bad

OK

Check between

JK100 TO

IC106 circuit

BAD

NO

Change JK100

Repairbetween

JK100 TO

IC106 circuit

G

USB FUNCTION

NO WORKING

Check USB pcb

CN104 cable

loose or bad IN T

NO

Checktest CN104

Pin1=5V

YES

YES

NO

RE-insert and fi x

the cable

Check back power
PCB power supply

circuit

YES

CheckIC500 to

JK700

a nd IC106 ciruit

YES

Check IC106 and

IC301,IC500

its conjaint part

NO

Repair between

IC500 to JK700

a nd IC106 ciruit

YES

Check between

JK201 TO

IC106 Pin95 circuit

YES

Check IC106

circuit

OK

CheckIC106 and

its around part

CheckUSB JK&
PCB section bad

cause damage

REPAIR INSTRUCTIONS ( MAIN UNIT )

2-4 2-4

MAIN UNIT REPAIR CHART 3/3

H

MIC Function
No working

CheckMIC pcb

RB2 2 cable

loose or bad INT

YES

Check test IC701&
IC700pin8=12V

Pin4=5V

YES

NO

RE-insert and fi x

the cable

Checkback power

PCB power supply

circuit

I

Tuner function

No sound

Check TUNER pcb

CN 4 cable

loose or bad INT

YES

Check test CN4 Check back power

pin9=9V

YES

NO

RE-insert and fi x

the cable

PCB power supply

circuit

J

AUX IN

No SOUND

Check JK700 IS

GOOD OR BAD

OK

Check between

JK700 TO

IC702 circuit

BAD

NO

Change JK700

Repair between

JK700 TO
IC702 circuit

K

TAPE FUNCTION

No WORKING

Check TAPE pcb

RB802 & CN800 cable

loose or bad INT

YES

Check test IC804

Pin15,16=5V

IC803 pin16=12V

YES

NO

RE-insert and fi x

the cable

Check back power

PCB power supply

circuit

YES

Check test JK200
IC200& MIC PCB

YES

&

Check TUNER PART

Check IC7 2 a nd its

OK

around part

YES

Check IC804 & IC803

its ar ound part

REPAIR INSTRUCTIONS (SUBWOOFER)

2-5

2-5

t

3-1 3-1

DISASSEMBLY INSTRUCTIONS (MAIN UNIT )

Dismantling of the back panel & DVD Module

1) Loosen 6 screws at both slide cover "A" shown as figure 1 and 8 screws at back panel to take out the top cover.

2) Loosen 18 screws "B " at the back panel as figure 2.

3) Loosen 4 screws "C " to take out DVD module cover as figure 3.

4) Loosen 4 screws "D " to take out DVD module as figure 4.

B

A

Dismantling of the Main Board

1) Release 1 screw " E " at the side of main board as figure 5.

2) Loosen 1 screw "F" at the main heat sink board as figure 6.

E

Figure 5

F

Figure 6

Figure 1

C

Figure 2

D

Dismantling of the Power Board

1) Loosen 4 screws " G " to remove the Power Board as figure 7.

2) Remove the catch "H" using cutter as shown in figure 8.

G

Figure 7

H

Figure 8

Figure 3

Figure 4