Philips 40PFA4500 Schematic

Colour Television Chassis

TPS15.2A

Contents Page Contents Page

1. Revision List 2

2. Technical Specs, Diversity, and Connections 2

3. Precautions, Notes, and Abbreviation List 5

4. Mechanical Instructions 9 Cable dressing (40" 4500 series) 9 Cable dressing (50" 4500 series) 10 Cable dressing (55" 4500 series) 10

5. Service Modes and Fault Finding 14

6. Alignments 18

7. Circuit Descriptions 19

8. IC Data Sheets 24

9. Block Diagrams Block diagram 4500 series 27

10. Circuit Diagrams and PWB Layouts Drawing PWB A 715G6934 PSU A 715G6338 PSU 32 37-38 A 715G6973 PSU 39 43-44 B 715G6805 SSB 45 53-54 J 715G7055 IR/LED Panel 55 56 E 715G7088 Keyboard control panel 57 58

11. Styling Sheets 4500 series 40" 59 4500 series 50" 60 4500 series 55" 61

28 30-31

Published by XMM/SC 1518 Quality Printed in the Netherlands Subject to modification EN 3122 785 19911

2015-May-01

2015 ©

TP Vision Netherlands B.V.

All rights reserved. Specifications are subject to change without notice. Trademarks are the property of Koninklijke Philips Electronics N.V. or their respective owners. TP Vision Netherlands B.V. reserves the right to change products at any time without being obliged to adjust earlier supplies accordingly. PHILIPS and the PHILIPS’ Shield Emblem are used under license from Koninklijke Phili ps Electronics N.V.

EN 2 TPS15.2A LA1.

Revision List

1. Revision List

Manual xxxx xxx xxxx.0

• First release.

Manual xxxx xxx xxxx.1

• Chapter 2: Updated table 2.1 Technical Specifications

2. Technical Specs, Diversity, and Connections

Index of this chapter:

• Specifications are indicative (subject to change).

2.1 Technical Specifications

2.2 Directions for Use

2.3 Connections

2.4 Chassis Overview

2.1 Technical Specifications

For on-line product support please use the links in back to

div.table 2-1. Here is product information available, as well as

getting started, user manuals, frequently asked questions and

Notes:

software & drivers.

• Figures can deviate due to the different set executions.

Table 2-1 Described Model Numbers and Diversity

24 910 11

Mechanics

CTN

40PFA4500/56 2-1 4-1 4-5 4-6 9.1 10.1 10.4 10.5 10.6 11.1 40PFA4500/73 2-1 4-1 4-5 4-6 9.1 10.1 10.4 10.5 10.6 11.1 40PFA4500/81 2-1 4-1 4-5 4-6 9.1 10.1 10.4 10.5 10.6 11.1 40PFA4500/98 2-1 4-1 4-5 4-6 9.1 10.1 10.4 10.5 10.6 11.1 40PFA4500S/98 2-1 4-1 4-5 4-6 9.1 10.1 10.4 10.5 10.6 11.1 50PFA4500/56 2-1 4-2 4-5 4-6 9.1 10.2 10.4 10.5 10.6 11.2 50PFA4500/73 2-1 4-2 4-5 4-6 9.1 10.2 10.4 10.5 10.6 11.2 50PFA4500/98 2-1 4-2 4-5 4-6 9.1 10.2 10.4 10.5 10.6 11.2 50PFA4500S/98 2-1 4-2 4-5 4-6 9.1 10.2 10.4 10.5 10.6 11.2 55PFA4500/56 2-1 4-3 4-5 4-6 9.1 10.3 10.4 10.5 10.6 11.3 55PFA4500/98 2-1 4-3 4-5 4-6 9.1 10.3 10.4 10.5 10.6 11.3

Connection Overview

Wire Dressing

Rear Cover Removal

Block Diagrams Schematics

SSB Removal

Block Diagram

Power Supply

SSB

J (IR/LED)

E (Keyboard/Leading Edge)

Styling

2.2 Directions for Use

Directions for use can be downloaded from the following websites:

http://www.philips.com/support http://www.p4c.philips.com

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2.3 Connections

ARC / MHL

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Technical Specs, Diversity, and Connections

EN 3TPS15.2A LA 2.

2.3.1 Side Connections

Figure 2-1 Connection overview

Note: The following connector colour abbreviations are used

(acc. to DIN/IEC 757): Bk= Black, Bu= Blue, Gn= Green, Gy= Grey, Rd= Red, Wh= White, Ye= Yellow.

1 - HDMI 3: Digital Video - In, Digital Audio - In/Out

Figure 2-2 HDMI (type A) connector

1 -D2+ Data channel j 2-Shield Gnd H 3 -D2- Data channel j 4 -D1+ Data channel j 5-Shield Gnd H 6 -D1- Data channel j 7 -D0+ Data channel j 8-Shield Gnd H 9 -D0- Data channel j 10 - CLK+ Data channel j 11 - Shield Gnd H 12 - CLK- Data channel j 13 - Easylink/CEC Control channel jk 14 - ARC Audio Return Channel k

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15 - DDC_SCL DDC clock j 16 - DDC_SDA DDC data jk 17 - Ground Gnd H 18 - +5V j 19 - HPD Hot Plug Detect j 20 - Ground Gnd H

2 - HDMI 2: Digital Video - In, Digital Audio with MHL In/Out

Figure 2-3 HDMI (type A) connector

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13 - Easylink/CEC Control channel jk 14 - ARC Audio Return Channel k 15 - DDC_SCL DDC clock j 16 - DDC_SDA DDC data jk 17 - Ground Gnd H 18 - +5V j 19 - HPD Hot Plug Detect j 20 - Ground Gnd H

3 - HDMI 1: Digital Video - In, Digital Audio with ARC In/Out

Figure 2-4 HDMI (type A) connector

4 - USB 2.0

3 -Data (+) jk 4 -Ground Gnd H

2.3.2 Rear Connections

5 - Audio - In: Left / Right, VGA

Gn - Audio L/R in 0.5 V

/ 10 k jq

RMS

6 - PC IN:VGA

Figure 2-6 VGA connector

1 -Video Red 0.7 V 2 -Video Green 0.7 V 3 -Video Blue 0.7 V 4-n.c.

/ 75 W j

5 -Ground Gnd H 6 -Ground Red Gnd H 7 -Ground Green Gnd H 8 -Ground Blue Gnd H 9-+5V 10 - Ground Sync Gnd H

+5 V j

11 - Ground Red Gnd H 12 - DDC_SDA DDC data j 13 - H-sync 0 - 5 V j 14 - V-sync 0 - 5 V j 15 - DDC_SCL DDC clock j

7 - TV ANTENNA - In

Signal input from an antenna, cable or satellite.

8 - Cinch: Video YPbPr - In, Audio - In

Gn - Video - Y 1 V Bu -Video - Pb 0.7 V Rd -Video - Pr 0.7 V Wh -Audio - L 0.5 V Rd -Audio - R 0.5 V

/ 75 W jq

/ 10 kW jq

RMS

/ 10 kW jq

RMS

Figure 2-5 USB (type A)

1-+5V k 2 -Data (-) jk

2.4 Chassis Overview

Refer to 9. Block Diagrams for PWB/CBA locations.

9 - Cinch: SPDIF - Out

Ye - Coaxial 0.4 - 0.6V

/ 75  kq

10 - Head phone (Output)

Bk -Head phone 80 - 600  / 10 mW ot

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Precautions, Notes, and Abbreviation List

3. Precautions, Notes, and Abbreviation List

Index of this chapter:

3.1 Safety Instructions

3.2 Warnings

3.3 Notes

3.4 Abbreviation List

3.1 Safety Instructions

Safety regulations require the following during a repair:

• Connect the set to the Mains/AC Power via an isolation transformer (> 800 VA).

• Replace safety components, indicated by the symbol h, only by components identical to the original ones. Any other component substitution (other than original type) may increase risk of fire or electrical shock hazard.

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 Mains/AC Power lead for external damage.

• Check the strain relief of the Mains/AC Power cord for proper function.

• Check the electrical DC resistance between the Mains/AC Power plug and the secondary side (only for sets that have a Mains/AC Power isolated power supply):

1. Unplug the Mains/AC Power cord and connect a wire

between the two pins of the Mains/AC Power plug.

2. Set the Mains/AC Power switch to the “on” position

(keep the Mains/AC Power cord unplugged!).

3. Measure the resistance value between the pins of the

Mains/AC Power plug and the metal shielding of the tuner or the aerial connection on the set. The reading should be between 4.5 M and 12 M.

4. Switch “off” the set, and remove the wire between the

two pins of the Mains/AC Power plug.

• Check the cabinet for defects, to prevent touching of any inner parts by the customer.

3.2 Warnings

• All ICs and many other semiconductors are susceptible to electrostatic discharges (ESD w). Careless handling during repair can reduce life drastically. Make sure that, during repair, you are connected with the same potential as the mass of the set by a wristband with resistance. Keep components and tools also at this same potential.

• Be careful during measurements in the high voltage section.

• Never replace modules or other components while the unit is switched “on”.

• When you align the set, use plastic rather than metal tools. This will prevent any short circuits and the danger of a circuit becoming unstable.

3.3 Notes

3.3.1 General

• Measure the voltages and waveforms with regard to the chassis (= tuner) ground (H), or hot ground (I), depending on the tested area of circuitry. The voltages and waveforms shown in the diagrams are indicative. Measure them in the Service Default Mode with a colour bar signal and stereo sound (L: 3 kHz, R: 1 kHz unless stated otherwise) and picture carrier at 475.25 MHz for PAL, or 61.25 MHz for NTSC (channel 3).

• Where necessary, measure the waveforms and voltages with (D) and without (E) aerial signal. Measure the voltages in the power supply section both in normal operation (G) and in stand-by (F). These values are indicated by means of the appropriate symbols.

3.3.2 Schematic Notes

• All resistor values are in ohms, and the value multiplier is often used to indicate the decimal point location (e.g. 2K2 indicates 2.2 k).

• Resistor values with no multiplier may be indicated with either an “E” or an “R” (e.g. 220E or 220R indicates 220 ).

• All capacitor values are given in micro-farads (10 nano-farads (n 10

• Capacitor values may also use the value multiplier as the decimal point indication (e.g. 2p2 indicates 2.2 pF).

• An “asterisk” (*) indicates component usage varies. Refer to the diversity tables for the correct values.

• The correct component values are listed on the Philips Spare Parts Web Portal.

3.3.3 Spare Parts

For the latest spare part overview, consult your Philips Spare Part web portal.

3.3.4 BGA (Ball Grid Array) ICs

Introduction

For more information on how to handle BGA devices, visit this URL: http://www.atyourservice-magazine.com “Magazine”, then go to “Repair downloads”. Here you will find Information on how to deal with BGA-ICs.

BGA Temperature Profiles

For BGA-ICs, you must use the correct temperature-profile. Where applicable and available, this profile is added to the IC Data Sheet information section in this manual.

3.3.5 Lead-free Soldering

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

• Use only lead-free soldering tin. If lead-free solder paste is required, please contact the manufacturer of your soldering 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 soldering tin. The solder tool must be able: – To reach a solder-tip temperature of at least 400°C. – To stabilize the adjusted temperature at the solder-tip. – To exchange solder-tips for different applications.

• Adjust your solder tool so that a temperature of around 360°C - 380°C is reached and stabilized at the solder joint. Heating time of the solder-joint should not exceed ~ 4 sec. Avoid temperatures above 400°C, otherwise wear-out of tips will increase drastically and flux-fluid will be destroyed. To avoid wear-out of tips, switch “off” unused equipment or reduce heat.

• Mix of lead-free soldering tin/parts with leaded soldering tin/parts is possible but PHILIPS recommends strongly to avoid mixed regimes. If this cannot be avoided, carefully clear the solder-joint from old tin and re-solder with new tin.

3.3.6 Alternative BOM identification

It should be noted that on the European Service website, “Alternative BOM” is referred to as “Design variant”.

The third digit in the serial number (example: AG2B0335000001) indicates the number of the alternative B.O.M. (Bill Of Materials) that has been used for producing the specific TV set. In general, it is possible that the same TV model on the market is produced with e.g. two different types of displays, coming from two different suppliers. This will then

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-9

), or pico-farads (p 10

. Select

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Precautions, Notes, and Abbreviation List

result in sets which have the same CTN (Commercial Type Number; e.g. 28PW9515/12) but which have a different B.O.M. number. By looking at the third digit of the serial number, one can identify which B.O.M. is used for the TV set he is working with. If the third digit of the serial number contains the number “1” (example: AG1B033500001), then the TV set has been manufactured according to B.O.M. number 1. If the third digit is a “2” (example: AG2B0335000001), then the set has been produced according to B.O.M. no. 2. This is important for ordering the correct spare parts! For the third digit, the numbers 1...9 and the characters A...Z can be used, so in total: 9 plus 26= 35 different B.O.M.s can be indicated by the third digit of the serial number.

Identification: The bottom line of a type plate gives a 14-digit serial number. Digits 1 and 2 refer to the production centre (e.g. SN is Lysomice, RJ is Kobierzyce), digit 3 refers to the B.O.M. code, digit 4 refers to the Service version change code, digits 5 and 6 refer to the production year, and digits 7 and 8 refer to production week (in example below it is 2010 week 10 / 2010 week 17). The 6 last digits contain the serial number.

Figure 3-1 Serial number (example)

3.3.7 Board Level Repair (BLR) or Component Level Repair (CLR)

If a board is defective, consult your repair procedure to decide if the board has to be exchanged or if it should be repaired on component level. If your repair procedure says the board should be exchanged completely, do not solder on the defective board. Otherwise, it cannot be returned to the O.E.M. supplier for back charging!

3.3.8 Practical Service Precautions

• It makes sense to avoid exposure to electrical shock.

While some sources are expected to have a possible dangerous impact, others of quite high potential are of limited current and are sometimes held in less regard.

• Always respect voltages. While some may not be

dangerous in themselves, they can cause unexpected reactions that are best avoided. Before reaching into a powered TV set, it is best to test the high voltage insulation. It is easy to do, and is a good service precaution.

3.4 Abbreviation List

0/6/12 SCART switch control signal on A/V

board. 0 = loop through (AUX to TV),

6 = play 16 : 9 format, 12 = play 4 : 3 format

AARA Automatic Aspect Ratio Adaptation:

algorithm that adapts aspect ratio to remove horizontal black bars; keeps the original aspect ratio

ACI Automatic Channel Installation:

algorithm that installs TV channels directly from a cable network by

means of a predefined TXT page ADC Analogue to Digital Converter AFC Automatic Frequency Control: control

signal used to tune to the correct

frequency AGC Automatic Gain Control: algorithm that

controls the video input of the feature

box AM Amplitude Modulation AP Asia Pacific AR Aspect Ratio: 4 by 3 or 16 by 9 ASF Auto Screen Fit: algorithm that adapts

aspect ratio to remove horizontal black

bars without discarding video

information ATSC Advanced Television Systems

Committee, the digital TV standard in

the USA ATV See Auto TV Auto TV A hardware and software control

system that measures picture content,

and adapts image parameters in a

dynamic way AV External Audio Video AVC Audio Video Controller AVIP Audio Video Input Processor B/G Monochrome TV system. Sound

carrier distance is 5.5 MHz BDS Business Display Solutions (iTV) BLR Board-Level Repair BTSC Broadcast Television Standard

Committee. Multiplex FM stereo sound

system, originating from the USA and

used e.g. in LATAM and AP-NTSC

countries B-TXT Blue TeleteXT C Centre channel (audio) CEC Consumer Electronics Control bus:

remote control bus on HDMI

connections CL Constant Level: audio output to

connect with an external amplifier CLR Component Level Repair ComPair Computer aided rePair CP Connected Planet / Copy Protection CSM Customer Service Mode CTI Color Transient Improvement:

manipulates steepness of chroma

transients CVBS Composite Video Blanking and

Synchronization DAC Digital to Analogue Converter DBE Dynamic Bass Enhancement: extra

low frequency amplification DCM Data Communication Module. Also

referred to as System Card or

Smartcard (for iTV). DDC See “E-DDC” D/K Monochrome TV system. Sound

carrier distance is 6.5 MHz DFI Dynamic Frame Insertion DFU Directions For Use: owner's manual DMR Digital Media Reader: card reader DMSD Digital Multi Standard Decoding DNM Digital Natural Motion

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Precautions, Notes, and Abbreviation List

EN 7TPS15.2A LA 3.

DNR Digital Noise Reduction: noise

reduction feature of the set DRAM Dynamic RAM DRM Digital Rights Management DSP Digital Signal Processing DST Dealer Service Tool: special remote

control designed for service

technicians DTCP Digital Transmission Content

Protection; A protocol for protecting

digital audio/video content that is

traversing a high speed serial bus,

such as IEEE-1394 DVB-C Digital Video Broadcast - Cable DVB-T Digital Video Broadcast - Terrestrial DVD Digital Versatile Disc DVI(-d) Digital Visual Interface (d= digital only) E-DDC Enhanced Display Data Channel

(VESA standard for communication

channel and display). Using E-DDC,

the video source can read the EDID

information form the display. EDID Extended Display Identification Data

(VESA standard) EEPROM Electrically Erasable and

Programmable Read Only Memory EMI Electro Magnetic Interference EPG Electronic Program Guide EPLD Erasable Programmable Logic Device EU Europe EXT EXTernal (source), entering the set by

SCART or by cinches (jacks) FDS Full Dual Screen (same as FDW) FDW Full Dual Window (same as FDS) FLASH FLASH memory FM Field Memory or Frequency

Modulation FPGA Field-Programmable Gate Array FTV Flat TeleVision Gb/s Giga bits per second G-TXT Green TeleteXT H H_sync to the module HD High Definition HDD Hard Disk Drive HDCP High-bandwidth Digital Content

Protection: A “key” encoded into the

HDMI/DVI signal that prevents video

data piracy. If a source is HDCP coded

and connected via HDMI/DVI without

the proper HDCP decoding, the

picture is put into a “snow vision” mode

or changed to a low resolution. For

normal content distribution the source

and the display device must be

enabled for HDCP “software key”

decoding. HDMI High Definition Multimedia Interface HP HeadPhone I Monochrome TV system. Sound

C Inter IC bus

D Inter IC Data bus

S Inter IC Sound bus

carrier distance is 6.0 MHz

IF Intermediate Frequency IR Infra Red IRQ Interrupt Request ITU-656 The ITU Radio communication Sector

(ITU-R) is a standards body

subcommittee of the International

Telecommunication Union relating to

radio communication. ITU-656 (a.k.a.

SDI), is a digitized video format used

for broadcast grade video.

Uncompressed digital component or

digital composite signals can be used.

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The SDI signal is self-synchronizing, uses 8 bit or 10 bit data words, and has a maximum data rate of 270 Mbit/s, with a minimum bandwidth of 135 MHz.

iTV Institutional TeleVision; TV sets for

hotels, hospitals etc.

LS Last Status; The settings last chosen

by the customer and read and stored in RAM or in the NVM. They are called at start-up of the set to configure it according to the customer's

preferences LATAM Latin America LCD Liquid Crystal Display LED Light Emitting Diode L/L' Monochrome TV system. Sound

carrier distance is 6.5 MHz. L' is Band

I, L is all bands except for Band I LPL LG.Philips LCD (supplier) LS Loudspeaker LVDS Low Voltage Differential Signalling Mbps Mega bits per second M/N Monochrome TV system. Sound

carrier distance is 4.5 MHz MHEG Part of a set of international standards

4. Mechanical Instructions

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CN701

CN8601

CN9101

CN601

CN401

MAIN POWER SUPPLY

(1054)

SSB

(1053)

ECN701

ECN401

ECN601

LOUDSPEAKER

(1184)

LOUDSPEAKER

(1184)

IR/LED BOARD

(1056)

ECN401

KEYBOARD CONTROL

(1057)

CN01

CN403

ECN403

ECN701

Index of this chapter:

4.1 Cable Dressing

4.2 Service Positions

4.3 Assembly/Panel Removal

4.4 Set Re-assembly

4.1 Cable Dressing

Mechanical Instructions

Notes:

• Figures below can deviate slightly from the actual situation, due to the different set executions.

EN 9TPS15.2A LA 4.

Figure 4-1 Cable dressing (40" 4500 series)

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Mechanical Instructions

ECN701

KEYBOARD CONTROL

(1057)

ECN401

CN01

ECN601

LOUDSPEAKER

(1184)

CN8101

MAIN POWER SUPPLY

(1054)

CN9301

ECN401

IR/LED BOARD

(1056)

Figure 4-2 Cable dressing (50" 4500 series)

ECN601

ECN701

CN701

CN601

ECN401

ECN403

CN401 CN403

SSB

(1053)

LOUDSPEAKER

(1184)

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(1057)

ECN401

CN01

ECN601

LOUDSPEAKER

(1184)

CN8101

MAIN POWER SUPPLY

(1054)

CN9101

ECN701

ECN401

IR/LED BOARD

(1056)

Figure 4-3 Cable dressing (55" 4500 series)

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ECN403

ECN701

CN601

ECN601

CN701

ECN401

CN401 CN403

SSB

(1053)

LOUDSPEAKER

(1184)

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4.2 Service Positions

For easy servicing of a TV set, the set should be put face down on a soft flat surface, foam buffers or other specific workshop tools. Ensure that a stable situation is created to perform measurements and alignments. When using foam bars take care that these always support the cabinet and never only the display. Caution: Failure to follow these guidelines can seriously damage the display! Ensure that ESD safe measures are taken.

4.3 Assembly/Panel Removal

Instructions below apply to the 40PFA4500/98, but will be similar for other 40"/50"/55" model.

4.3.1 Stand

Refer to Figure 4-4

1. Remove the fixation screws [1] that secure the stand. Refer to Figure 4-4

2. Take the stand out from the set.

for details.

4.3.2 Rear Cover

Refer to Figure 4-5 Warning: Disconnect the mains power cord before removing the rear cover.

1. Remove the fixation screws [1] and [2] that secure the rear cover. Refer to Figure 4-5

2. Lift the rear cover from the TV. Make sure that wires and cables are not damaged while lifting the rear cover from the set.

for details.

Figure 4-4 Stand removal

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Mechanical Instructions

M3 × 8

M3 × 6

4.3.3 Keyboard Control unit

1. Gently release the tapes that secure the keyboard cable.

2. Remove the fixation screws that secure the keyboard control panel.

3. Gently take the keyboard out.

When defective, replace the whole unit.

4.3.4 Small Signal Board (SSB)

Refer to Figure 4-6 Caution: it is mandatory to remount all different screws at their original position during re-assembly. Failure to do so may result in damaging the SSB.

1. Release the clips from the LVDS connector that connect with the SSB [1]. Caution: be careful, as these are very fragile connectors! Unplug the cable/flat foils connector.

2. Unplug all other connectors [2].

3. Remove all the fixation screws from the SSB [3].

4. Take out the SSB with I/O bracket.

5. The SSB can now be shifted away from side connector cover, then lifted and taken out of the I/O bracket. Refer to

Figure 4-6

for details.

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Figure 4-5 Rear cover removal

Figure 4-6 SSB removal

4.3.5 Power Supply Unit (PSU)

Caution: it is mandatory to remount all different screws at their

original position during re-assembly. Failure to do so may result in damaging the PSU.

1. Unplug all connectors from the PSU.

2. Remove all fixation screws from the PSU.

3. The PSU can be taken out of the set now.

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Mechanical Instructions

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4.3.6 Speakers

1. Gently release the tapes that secure the speaker cables.

2. Unplug the speaker connector from the SSB.

3. Take the speakers out. When defective, replace the both units.

4.3.7 IR board Control Unit

Refer to Figure 4-7

1. Unplug the connector from the SSB. Caution: be careful, as these are very fragile connectors!

2. Remove all the fixation screws [1] from the IR board control unit .Refer to Figure 4-7

3. Remove the DECO_LOGO [2], IR board [3] from the DECO_REAR_COVER. Refer to Figure 4-8

When defective, replace the whole unit.

, Figure 4-8 for details.

for details.

4.3.8 LCD Panel

1. Remove the SSB as described earlier.

2. Remove the PSU as described earlier.

3. Remove the keyboard control panel as described earlier.

4. Remove the stand as described earlier.

5. Remove the IR/LED as described earlier.

6. Remove the fixations screws that fix the metal clamps to the front bezel. Take out those clamps.

7. Remove all other metal parts not belonging to the panel.

8. Lift the LCD Panel from the bezel.

When defective, replace the whole unit.

4.4 Set Re-assembly

To re-assemble the whole set, execute all processes in reverse order.

Notes:

• While re-assembling, make sure that all cables are placed and connected in their original position. See Figure 4-1

Figure 4-3

• Pay special attention not to damage the EMC foams on the SSB shields. Ensure that EMC foams are mounted correctly.

Figure 4-7 IR board Control Unit removal 1

Figure 4-8 IR board Control Unit removal 2

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Service Modes and Fault Finding

5. Service Modes and Fault Finding

Index of this chapter:

5.1 Test Points

5.2 Service Modes

5.3 Stepwise Start-up

5.4 Software Upgrading

5.5 Fault Finding and Repair Tips

5.1 Test Points

As most signals are digital, it will be difficult to measure waveforms with a standard oscilloscope.

Perform measurements under the following conditions:

• Service Default Mode.

• Video: Colour bar signal.

• Audio: 3 kHz left, 1 kHz right.

5.2 Service Modes

The Service Mode feature is split into five parts:

• Factory Mode.

• Customer Service Mode (CSM).

The Factory mode offer features, which can be used by the Service engineer to repair/align a TV set. Some features are:

• Make alignments (e.g. White Tone), reset the error buffer (Factory Mode).

The CSM is a Service Mode that can be enabled by the consumer. The CSM displays diagnosis information, which the customer can forward to the dealer or call centre. In CSM mode, “CSM”, is displayed in the top right corner of the screen. The information provided in CSM and the purpose of CSM is to:

• Increase the home repair hit rate.

• Decrease the number of nuisance calls.

• Solved customers’ problem without home visit.

Software Identification, Version, and Cluster

The software ID and version will be shown in the main menu display of CSM. The screen will show: “AAAAB-X.YYY”, where:

• AAAA is the chassis name: TPS152A x.yyy.

• B is the region indication: E = Europe, A = AP/China, U = NAFTA, L = LATAM.

• X is the main version number: this is updated with a major change of specification (incompatible with the previous software version). Numbering will go from 1 - 99 and AA - ZZ.

- If the main version number changes, the new version number is written in the NVM.

- If the main version number changes, the default settings are loaded.

• YYY is the sub version number: this is updated with a minor change (backwards compatible with the previous versions). Numbering will go from 000 - 999.

- If the sub version number changes, the new version number is written in the NVM.

- If the NVM is refreshed, the software identification, version, and cluster will also be written to NVM.

5.2.2 Contents of the Factory mode:

Purpose

• To perform extended alignments.

Specifications

• Displaying and or changing Panel ID information.

• Various software alignment settings.

• Testpattern displaying.

• Public Broadcasting Service password Reset.

•etc.

Note: For the new model range, a new remote control (RC) is used with some renamed buttons. This has an impact on the activation of the Service modes. For instance the old “MENU” button is now called “HOME” (or is indicated by a “house” icon).

5.2.1 General

Next items are applicable to all Service Modes or are general.

Table 5-1 Factory mode overview

Default Value

Item Item value

0 Brand Philips Philips Philips Brand name 1 Main-MCU Ver V1.01 V1.00 V1.00 Main-MCU version 2 Bootloader Ver V0.01 V0.01 V0.01 Bootloader version 3 Sub-MCU Ver V0.01 V0.01 V0.01 Sub-MCU version 4 EEPROM Ver V0.01 V0.01 V0.01 EEPROM version 5 Date Jan 26 2015 Feb 10 2015 Jan 27 2015 Software release date 6 Model Name 40PFA4500 50PFA4500 55PFA4500 Model name 7 Scaler MST6852LP-V5 MST6852LP-V5 MST6852LP-V5 Scaler name 8 Panel Type TPT400LA-J6PE1 TPT500J1-HVN07 TPT550J1-DUYSHA Display Panel model 9 Source Ypbpr TV TV Display current source 10 Auto Color Press GO Press GO Press GO Press to set Auto color 11 W/B Pattern Off Off Off W/B Pattern 12 SSC Enable On On On SSC enable 13 LVDS Span 35.0 KHz 35.0 KHz 35.0 KHz LVDS Span 14 LVDS Step 2.00 % 2.00 % 2.00 % LVDS Step 15 ADC YPbPr (SD) YPbPr (SD) YPbPr (SD) ADC 16 Gain Display R/G/B value 17 Offset Display R/G/B value 18 Color Temp Standard Normal Cool Display Color Temp 19 Scaler G ain Display R/G/B value 20 Offset Display R/G/B value 21 Burn In Off Off Off Burn In

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How to Activate the Factory mode

To activate the Factory mode, use the following method:

• Press the following key sequence on the remote control transmitter: from the “Menu/Home screen” press “1999”, directly followed by the “Back” button. Do not allow the display to time out between entries while keying the sequence.

After entering the Factory mode, the following items are displayed, the Default value just for reference.

Description40" 50" 55"

Service Modes and Fault Finding

Default Value

Item Item value

22 EEPROM Init EEPROM Init 23 Back LIT Time 00000.0Hrs Hrs 00000.0Hrs Hrs 00000.0Hrs Hrs Back LIT time 24 Total Time 00000.0Hrs Hrs 00000.0Hrs Hrs 00000 .0Hrs Hrs Total time 25 BackLight 100 100 100 Di spl ay ba cklight value 26 Language English English English Language 27 System Reset System Reset 28 Exit Exit factory mode

Description40" 50" 55"

EN 15TPS15.2A LA 5.

How to Exit the Factory mode

Use one of the following methods:

• Select EXIT_FACTORY from the menu and press the “OK” button.

Note: When the TV is switched “off” by a power interrupt, or normal switch to “stand-by” while in the factory mode, the TV will show up in “normal operation mode” as soon as the power is supplied again. The error buffer will not be cleared.

5.2.3 Customer Service Mode (CSM)

Purpose

The Customer Service Mode shows error codes and information on the TV’s operation settings.The call centre can instruct the customer (by telephone) to enter CSM in order to identify the status of the set.This helps the call centre to diagnose problems and failures in the TV set before making a service call. The CSM is a read-only mode; therefore, modifications are not possible in this mode.

Specifications

• Ignore “Service unfriendly modes”.

• Line number for every line (to make CSM language independent).

• Set the screen mode to full screen (all contents on screen is visible).

• After leaving the Customer Service Mode, the original settings are restored.

• Possibility to use “CH+” or “CH-” for channel surfing, or enter the specific channel number on the RC.

How to Exit CSM

To exit CSM, use one of the following methods.

• Press the MENU/HOME button on the remote control transmitter.

• Press the POWER button on the remote control transmitter.

• Press the POWER button on the television set.

How to Activate CSM

To activate CSM, press the following key sequence on a standard remote control transmitter: from the “Menu/Home screen” press “456987”, directly followed by the “Back” button. (do not allow the display to time out between entries while keying the sequence). After entering the Customer Service Mode, the following items are displayed.

Note: Activation of the CSM is only possible if there is no (user) menu on the screen!

Contents of CSM

• 1.1 Set Type This information is very helpful for a helpdesk/workshop as reference for further diagnosis. In this way, it is not necessary for the customer to look at the rear of the TV-set. Note that if an NVM is replaced or is initialized after corruption, this set type has to be re-written to NVM.

• 1.2 Production code Displays the production code (the serial number) of the TV. Note that if an NVM is replaced or is initialized after corruption, this production code has to be re-written to NVM.

• 1.3 Key (HDCP) Indicates the validity of the HDMI keys (or HDCP keys). In case these keys are not valid and the customer wants to make use of the HDMI functionality, the SSB has to be replaced.

• 1.4 NVM name Detects and displays NVM name.

• 1.5 Software Version Displays the software version.

• 1.6 SW cluster name Displays the software cluster name.

• 1.7 RS232 Display RS232.

• 1.8 TV Region Display TV region.

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Power Off

Standby Soft Mode

Power On

Semi- Standby

Standby

Switch

Off(Mains Power Plug)

Standby Soft Mode Command Received, previously in Standby

Soft Mode (Power tact switch)

TV Wakeup commands Received (TV Wakeup keys)

Digital background tasks started

Digital background tasks completed

Swith On, previously in

Standby/Semi- Standby (Mains Power Plug)

Standby Soft Mode

Command Received (Power tact

switch)

Switch Off (Mains Power Plug)

Switch Off

(Mains Power Plug)

Swith On, previously in Standby Soft Mode (Mains Power Plug)

Standby commands

Received (RC

Standby key)

Standby Soft Mode

Command Received, previously in Standby Soft Mode (Power tact switch)

TV Wakeup commands Received (TV Wakeup keys)

Switch On, previously in Power On Mode (Power tact switch)

Standby Soft Mode Command Received, (Power tact switch)

Switch Off (Mains Power Plug)

Switch On,previously in TV Operation Mode (Mains Power Plug)

5.3 Stepwise Start-up

Service Modes and Fault Finding

5.4 Software Upgrading

5.4.1 Description

It is possible for the user to upgrade the main software via the USB port. This allows replacement of a software image in a stand alone set. A description on how to upgrade the main software can be found in the DFU or on the Philips website.

5.4.2 Introduction

Philips continuously tries to improve its products, and it’s recommend that the TV software is updated when updates are available. Software update files can be obtained from the dealer or can be downloaded from the following websites:

http://www.philips.com/support

Preparing a portable memory for software upgrade

The following requirements have to be met:

1. A personal computer connected to the internet.

2. An archive utility that supports the ZIP-format (e.g. WinZip for Windows or Stufflt for Mac OS).

3. A FAT formatted USB memory stick (preferably empty).

Note:

1. Only FAT/DOS-formatted memory sticks are supported.

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Figure 5-1 Stepwise Start-up

5.4.3 Check the current TV software version

5.4.4 Download the latest software

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2. Only use software update files that can be found on the

http://www.philips.com/support

Before starting the software upgrade procedure, it is advised to check that what the current TV software:

1. Press the “Home screen” + “1999” + “Back” button on the remote control to enter the Factory mode.

2. Use the up/down cursor keys to select “SW Ver”.

If the current software version of the TV is the same as the latest update file found on http://www.philips.com/support not necessary to update the TV software.

1. Open the internet page http://www.philips.com/support

2. Find information and software related to the TV.

3. Select the latest software update file and download it to the PC.

4. Insert the USB memory stick into one of the USB ports of the PC.

5. Decompress the downloaded ZIP file and copy it to the root directory of the USB flash drive.

web site.

, it is

Service Modes and Fault Finding

19452_200_130902.eps

130902

Confirm

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Confirm

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5.4.5 Update the TV software

1. Turn the TV on and wait for it to boot completely.

2. Insert the USB memory stick that contains the software update files in one of the TV’s USB ports.

3. The TV will detect the USB memory stick automatically. Then a window jumps out as Figure 5-2

. Note: If the USB flash drive is not detected after power up, disconnect it and re-insert it. And no change the software name.

4. Select [Confirm] and press OK to start software updates. See Figure 5-2

5. Upgrading will now begins and the status of the updating progress will be displayed. See Figure 5-3

6. When the TV software is updated. Remove your USB flash drive, and the TV will turn on automatically.

• FUS_clustername_version.zip: Contains the “autorun.bin” which is needed to upgrade the TV main software and the software download application.

• NVM_clustername_version.zip: Default NVM content. Must be programmed via ComPair.

5.4.7 How to Copy NVM Data to/from USB

When copying data to and from a USB memory stick, the folder “repair” is used. When inserting an empty USB memory stick, and downloading data to the stick, the TV will create this folder. When sending data from a USB memory stick to a TV, the

intended data must be available in the “repair” folder. Note that when copying EDID data to the TV, all necessary EDID files must be in this folder. Service mode overview for your reference.

5.5 Fault Finding and Repair Tips

Note:

• It is assumed that the components are mounted correctly with correct values and no bad solder joints.

• Before any fault finding actions, check if the correct options are set.

5.5.1 No Picture via HDMI input

Check if HDCP key is valid. This can be done in CSM.

Figure 5-2 Update the TV software [1/2]

Figure 5-3 Update the TV software [2/2]

Note:

• Do not remove the USB flash drive during the software update.

• Do not turn off the power during the software update.

• If a power failure occurs during the update, do not remove the USB flash drive from the TV. The TV will continue the software update as soon as the power comes up again.

• If an error occurs during the update retry the procedure or contact the dealer.

• We do not recommend downgrading to an older version.

• Once the upgrade is finished, use the PC to remove the TV software from the USB portable memory.

5.5.2 TV Will Not Start-up from Stand-by

Possible Stand-by Controller failure. Re-flash the software.

5.5.3 Audio Amplifier

The Class D-IC U601 has a powerpad for cooling. When the IC is replaced it must be ensured that the powerpad is very well pushed to the PWB while the solder is still liquid. This is needed to insure that the cooling is guaranteed, otherwise the Class D-IC could break down in short time.

5.5.4 Loudspeakers

Make sure that the volume is set to minimum during disconnecting the speakers in the ON-state of the TV. The audio amplifier can be damaged by disconnecting the speakers during ON-state of the set!

5.5.5 Display option code

Attention: In case the SSB is replaced, always check the Panel Code in CSM, even when picture is available. Performance with the incorrect display option code can lead to unwanted side-effects for certain conditions.

5.4.6 Content and Usage of the One-Zip Software File

Below you find a content explanation of the One-Zip file, and instructions on how and when to use it. Only files that are relevant for Service are mentioned here.

• EDID_clustername.zip: Contains the EDID content of the different EDID NVMs. See ComPair for further instructions.

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6. Alignments

Index of this chapter:

6.1 General Alignment Conditions

6.2 Reset of Repaired SSB

6.1 General Alignment Conditions

Perform all electrical adjustments under the following conditions:

• Power supply voltage: 90 - 264 V

• Connect the set to the mains via an isolation transformer with low internal resistance.

• Allow the set to warm up for approximately 15 minutes.

• Measure voltages and waveforms in relation to correct ground (e.g. measure audio signals in relation to AUDIO_GND). Caution: It is not allowed to use heat sinks as ground.

• Test probe: R

• Use an isolated trimmer/screwdriver to perform alignments.

> 10 M, Ci < 20 pF.

6.2 Reset of Repaired SSB

A very important issue towards a repaired SSB from a Service repair shop (SSB repair on component level) implies the reset of the NVM on the SSB.

After a repaired SSB has been mounted in the set (set repair on board level), the type number (CTN) and production code of the TV has to be set according to the type plate of the set.

, 50/ 60  3 Hz.

Alignments

6.2.1 SSB Identification

SSB’s of this chassis are identified by a “715” code on the SSB. 715Axxxx-Nnn-MMM-OOOO

• 715 main category, Printed Wiring Board

• Axxxx sub category, sequential coding number

• Nnn Version code

• N Development number

• nn Production number

• MMM Mounting variation code

• OOOO Optional variation code

Make sure when replacing an SSB the SSB identification codes match the replacement board.

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7. Circuit Descriptions

Index of this chapter:

7.1 Introduction

7.2 Power Supply

7.3 DC/DC Converters

7.4 Front-End Analogue ATV reception

7.5 HDMI

7.6 Video and Audio Processing - MST6852LP

Notes:

•Only new circuits (circuits that are not published recently) are described.

• Figures can deviate slightly from the actual situation, due to different set executions.

• For a good understanding of the following circuit descriptions, please use the wiring, block (see chapter

9. Block Diagrams

10. Circuit Diagrams and PWB Layouts

you will find a separate drawing for clarification.

) and circuit diagrams (see chapter

).Where necessary,

Circuit Descriptions

7.1 Introduction

The TPS15.2A LA is a new chassis launched in AP in 2015. The whole range is covered by MST6852LP. The major deltas versus its predecessor support PAL/NTSC/SECAM, with multi-media, Video out function.

The TPS15.2A LA chassis comes with the following stylings:

• series xxPFA4500xx

7.1.1 Implementation

Key components of this chassis are:

• SCALER MST6852LP-V5 EPLQFP-156

• Silicon Tuner MxL661-AG-R

• AUDIO TAS5729MDDCAR 10W TSSOP-48 for Audio Amp

7.1.2 TPS15.2A LA Architecture Overview

For details about the chassis block diagrams refer to chapter

9. Block Diagrams

EN 19TPS15.2A LA 7.

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