Philips 15PF9925/12S Manuale utente

Published by TA 0260 Service PaCE Printed in the Netherlands Subject to modification EN 3122 785 12510

retrieval system or transmitted, in any form or by any means, electronic,

mechanical, photocopying, or otherwise without the prior permission of Philips.

Colour Television

15PF9925/12S/19S

Contents Page

Block diagram

Description of controls

Adjustment Instructions

Troubleshooting

Exploded View

Exploded View Parts List

Replacement Parts List

Circuit diagram, Printed Board Lay-out

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Tuner & IF

- TAUC-S120D

- TAFC-M130D

- TAFC-Z140D

Audio

Processor

- MSP3410D

Ext- L

Micro-Controller

- INFINEON ( SDA55XX )

LCD

< LCD TV System Block Diagram >

Video

Decorder

- VPC3230D

Video Scaler

- MX88L284

Computer

Signal

- D-Sub

R/G/B

H/V

D-R/G/B,

H / V -Sync,

Den, Clock

From

Computer

OSD -IC

MC141585

CVBS

Audio-Amp

LA4282 R

Ext- R

SIF

For MNT Application

LM151X3 - 8-bits

1H/1V

A to D Converter

- AD9884

For PC Input

- Contrast

- Brightness

- Color

Ext_Video Ext_Y/C

OSD B/R/G/B

Scart RGB

For TV

. Contrast

. Brightness

. Color

. Tint

CVBS For TXT

Interface

- TMDS (8bits)21 pin

RGB Switching

TDA8601

Y / Cb / Cr

RGB in

Back Light

Inverter Assy

CVBS OUT

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DESCRIPTION OF CONTROLS

MENU OK

PV¬

0LIST

Ò‡π

†

AUTOAUTO

Y-Z

wSource

Select your computer or other

peripherals:press repeatedly to

select TV,AV1, AV2, S-VIDEO

or PC monitor mode.

XBilingual choice and

sound mode selection

Press this key

• to switch from Stereo to

Mono sound in case of

stereo transmission,or from

Nicam Stereo to Nicam

Mono,in case of digital

transmission

• to switch from Nicam Dual

Yto Nicam Dual Zor

Nicam Dual Xin case of

Nicam Dual transmission

• to choose between Dual Y,

Dual Zor Dual Xin case

of bilingual transmission:

Dual Ysends the primary

broadcast language to the

loudspeakers;

Dual Zsends the secondary

broadcast language to the

loudspeakers;

Dual Xsends a separate

language to each loudspeaker.

Note: in case of weak stereo

sound signals, with stereo or

Nicam stereo transmission,select

mono reception.

Sound output selection in AV mode

InAV mode,you can select the output sound for the left and right loudspeakers.

Press the Xkey repeatedly to select:

• L+R:the audio signal from the audio L input is sent to the left loudspeaker,the audio signal

from the audio R input to the right loudspeaker

• L+L:the audio signal from the audio L input is sent to the left and right loudspeakers

• R+R:the audio signal from the audio R input is sent to the left and right loudspeakers.

BStandby

Switches theTV on from

standby or off to standby.

AUTO keys

To select predefined picture

and sound settings.

a AUTO picture

Each time it is pressed,a

different picture setting is

selected,corresponding with

specific factory settings of

Contrast,Brightness, Colour

and Sharpness.

MAUTO sound

Each time it is pressed,a

different sound setting is

selected,corresponding with

specific factory settings of

treble and bass.

Personal refers to the personal

preference settings of picture

and sound selected and stored

in the picture and sound menu.

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AUTO AUTO

Y-Z

Ò‡π

†

00LIST

MENUOK

VVolume

Press + or - to adjust the

volume.

¬Mute

Temporarily interrupt the

sound or restore it.

PProgramme selection

•to browse through theTV

channels which are not

skipped

• to switch theTV on from

standby.

®Ò‡π† Video

recorder keys

UTime display

The time, downloaded from the

TV channel (with teletext

broadcast) stored on

programme number 1 or the

lowest not skipped programme

number,is displayed on the

screen.

0/9 Digit keys

To select aTV channel.

0Previous programme

To display the previously

selectedTV channel.

LIST Programme list

To display the programme list.

bTeletext on/off

Teletext functions

hUfgcek

DSleeptimer

With this key you can set a

time period after which the

TV should switch itself to

standby.

Press the key repeatedly to

select the number of minutes.

The counter runs from B0,

10, 20, 30... to 240 minutes.

The timer begins to count

down from the number of

minutes selected.

Note:To view the remaining time,

press the Dkey once.To cancel

the sleep time, repeatedly press

the Dkey until B0 appears.

MENU Press repeatedly to

display each menu.

OK Press this key to activate

your choice,when in the menus.

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Should your remote control be lost or broken you can still operate yourTV with the keys

in front of theTV.

ON/OFF:Press the power ON/OFF key to switch theTV on or off

TV/VIDEO:Press repeatedly to select TV,AV or PC monitor mode

MENU:Press repeatedly to display each menu

OK:- Press this key to activate your choice when in the menu

- Auto demonstration:Keep the OK key pressed for about 10 seconds.

All the menus are being displayed automatically one after the other.

To stopAuto demonstration, press any key on the front panel.

-VOL + :- Press - or + to select a menu item;

- Press - or + to adjust the volume;

- Press - or + to adjust the menu settings.

- CH/PR +:- Press - or + to browse through theTV channels which are not skipped;

- Press - or + to select a menu item;

-To switch theTV on from standby.

B: Switches theTV on from standby or off to standby.

The Bindicator lights up brightly when theTV is in standby, dims when theTV is

switched on.

TV/VIDEO MENU OKVOLCH/PR

_+_+BON/OFF

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1. Application Object

This instruction is for the application to the LCD TV.

2. Notes

(1) This set uses an adapter, so connect the adapter and the

set correctly before adjustment.

(2) The adjustment must be performed under the correct

sequence.

(3) The adjustment must be performed in the circumstance of

25!5cC of temperature and 65–10% of relative humidity if

there is no specific designation.

(4) The input voltage of the receiver must keep 220V, 60Hz in

adjusting.

(5) The set must be operated for 30 minutes preliminarily

before adjustment if there is no specific designation.

[‘Heat Run’ must be performed with the full white signal or TV

noise signal in the internal part of the set.

[ The time for ‘Heat Run’ can be changed owing to production

plan.

3. PC Input Mode Adjustment

3-1. Required Test Equipment

(1) A pattern generator being in proportion to VG819 ; Pattern

of 64 tones

(2) A remote control

3-2. Preparation for Adjustment

(1) Perform ‘Heat Run’ for more than 30 minutes in white

pattern.

(2) Connect the signal of pattern generator with LCD TV.

(3) Lean the set 45° backward. (Adjustment is easy.)

(4) Set the PC mode menu as below.

3-3. White Adjustment

(1) Approve the signal of 64 tones of XGA(1024 * 768).

(2) Select all the gain of R, B and G with using ADJ of remote

control.

(3) After making 62 tones, 63 tones and 64 tones not

distinguished with using each signal of R, G and B, finish

adjusting at the moment when the signal 62, 63 and 64 is

distinguished.

ADJUSTMENT INSTRUCTION

45°

Initial Value

Contrast

Brightness

100

0.63 0.34

0x02

0.30 0.60

0x03

0.14 0.10

0x04

Error

!0.03

Color Coordinates(x,y)

AD9884

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3-4. Position of Mode Adjustment

Timing of Mode Table * H[dot]/V[line]

Mode

H_Total

H_Display

H_Blanking

H_Sync

H Polarity

H_Bp

H_Fp

H-Freq[KHz]

/Clk[MHz]

V_Total

V_Display

V_Blanking

V_Sync

V Polarity

V_Bp

V_Fp

VGA-60

800

640

160

NEG.

31.469

25.175

525

480

NEG

VGA-67

864

640

224

NEG.

35.0

30.24

525

480

NEG

VGA-72

832

656

176

NEG.

120

37.861

31.5

520

496

NEG

VGA-75

840

640

200

NEG.

120

37.5

31.5

500

480

NEG

VGA-85

832

640

192

NEG.

43.269

36.0

509

480

NEG

TEXT-70

900

720

180

108

NEG.

31.469

28.324

449

400

POS

SVGA-56

1024

800

224

POS

128

35.156

36.0

625

600

POS

SVGA-60

1056

800

256

128

POS

37.879

40.0

628

600

POS

SVGA-72

1040

800

240

120

POS

48.077

50.0

666

600

POS

Mode

H_Total

H_Display

H_Blanking

H_Sync

H Polarity

H_Bp

H_Fp

H-Freq[KHz]

/Clk[MHz]

V_Total

V_Display

V_Blanking

V_Sync

V Polarity

V_Bp

V_Fp

SVGA-75

1056

800

256

POS

160

46.875

49.5

625

600

POS

SVGA-85

1048

800

248

POS

152

53.674

56.25

631

600

POS

XGA-60

1344

1024

320

136

NEG

136

160

48.363

65.0

806

768

NEG

XGA-70

1328

1024

304

136

NEG

144

56.476

75.0

806

768

NEG

XGA-75

1312

1024

288

POS

176

60.23

78.75

800

768

POS

MAC-75

1152

832

320

NEG

224

49.725

57.283

667

624

NWG

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9 No sound Defective Reset IC of IC603 1) Check volume and speaker

- Speaker Defective MSP3400D of IC601 - Sound comes out only when being inputted into Audio

- Earphone Defective B+(8V,5V) of IC604,605. L/R

2) Check after replacing IC603

3) Replace IC601

4) Check and replace B+ of IC604,605.

10 Video color beat noise Earphone shield case being touched

Check the mould of shield and JA401, Replace shield case

Soldering IC301 and IC507 Re-soldering

1 Soft touch doesn’t Defective speaker wire 1) Make some space between the speaker wire and

function properly and inverter wire the Soft touch Board by sticking the speaker wire

to the guide hole of the cabinet.

2) Arrange working state of A1. Tape in the inverter wire

and correct working state of the Shield case.

2 Soft touch doesn’t 1) Broken components and 1) Check Soft touch with eyes

function soldering of them Check and repair soldering

2) P101 connector error 2) Check and repair the P101 connector

3 No screen Input error of inverter connector 1) Bend the pin legs of P801 connector -> recheck them

2) Check and repair the IC801,802 SI4925

P502 and Pin 21 connector 1) Check and fix P502 connector

being slipped out 2) Check and fix the components at P502 LCD module

and at main board.

3) Check Pin21.

Cracked components and 1) Check and repair tuner board and main board

soldering at tuner board 2) Solder Q403, Q402 and C153

4 Dark screen 1) Defective LCD lamp 1) Replace the inverter

2) Defective inverter 2) Replace the LCD lamp

3) Input error of inverter connector 2) Check the connector input.

5 Broken OSD display Defective the font rom of IC501 Check and replace the font rom of IC501

TROUBLESHOOTING

1. General Features

2. PC Mode

No. Symptom Cause Check Point

Check Point

6 Screen noise Clock or phase being 1) Resettig is needed according to the video card of each

not able to be adjusted PC

2) Horizontal noise : adjust phase until no horizontal

noise occurres

3) Vertical noise : adjust clock in menu until no vertical

noise occurres

7 Screen position error Screen position error 1) Play the Auto Configure in Menu.

horizontally or vertically 2) Adjust horizontal and vertical position until the screen

displayes normally

8 Color beat noise Soldering AD converter Recheck adn repair AD9884

or making it short

3. TV and external input

No. Symptom Cause

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EXPLODED VIEW

300 121

120

174

112

540

520

550

521

541

400 430

420

410

530

310

560330

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112 6304VT1511A LCD 151X3 B3AP 15.1” LGPHILIPS-LCD

120 6400VA0017A SPEAKER,GENERAL T401SX-095K14 8 OHM 1.0

121 4950V00067A METAL,SPEAKER HOLDER (L,R)

174 6410VEH003A POWER CORD

300 3091V00A15A CABINET ASSEMBLY

310 5020V00552B BUTTON

330 5020V00553A BUTTON,POWER

400 3809V00273G BACK COVER ASSEMBLY

410 4811V00015A BRACKET ASSEMBLY,MAIN

420 4950V00063B METAL,HINGE FIXER

430 3581V00033A DOOR ASSEMBLY

520 6871VMM600D PWB ASSY,MAIN RE-

6871VMM600H PWB ASSY,MAIN RL-

521 4950V00059A METAL,FRAME MAIN

530 6871VSMA12A PWB ASSY,CTRL ASSY

540 6633VA0003E INVERTER ASSY 12VVOLT DC/ACVO

541 4950V00060A METAL,SHIELD INVERTER

550 6871VSM660A PWB ASSY,MAIN TUNER RL-

6871VSM660B PWB ASSY,MAIN TUNER RE-

560 6871VSMA13A PWB ASSY,POWER ASSY

EXPLODED VIEW PARTS LIST

No. PART NO. DESCRIPTION

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