Philips Q549.2E User Manual

Colour Television Chassis

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Q549.2E

Contents Page Contents Page

1. Revision List 2

2. Technical Specifications and, Connections 2

3. Precautions, Notes, and Abbreviation List 6

4. Mechanical Instructions 10

5. Service Modes, Error Codes, and Fault Finding 15

6. Alignments 36

7. Circuit Descriptions 42

8. IC Data Sheets 53

9. Block Diagrams Wiring Diagram 32" (Elite Core) 59 Wiring Diagram 37" (Elite Core) 60 Block Diagram Video 62 Block Diagram Audio 63 Block Diagram Control & Clock Signals 64

Block Diagram I2C 65

Supply Lines Overview 66

10. Circuit Diagrams and PWB Layouts Drawing PWB Interface Ambilight: Interface + Single DC-DC Interface Ambilight: Dual DC-DC (AB2) 68 70 Interface Ambilight: Microcontrollerblock (AB3) 69 70 6 LED Low-Pow: Microcontroller Block Liteon(AL1)71 74 6 LED Low-Pow: Microcontroller Block Liteon(AL2)72 74 6 LED Low-Pow: LED Liteon (AL3) 73 74 8 LED Low-Pow: Microcontroller Block Liteon(AL1)75 79 8 LED Low-Pow: Microcontroller Block Liteon(AL2)76 79 8 LED Low-Pow: LED Liteon (AL3) 77 79 8 LED Low-Pow: LED Drive Liteon (AL4) 78 79 10 LED Low-Pow: Microcontroller Block Liteon(AL1)80 84 10 LED Low-Pow: Microcontroller Block Liteon(AL2)81 84 10 LED Low-Pow: LED Liteon (AL3) 82 84 10 LED Low-Pow: LED Drive Liteon (AL4) 83 84

SSB (B01A-B10) 85-133 137-138

SSB: SRP List Explanation 134 SSB: SRP List Part 1 135

Copyright 2009 Koninklijke Philips Electronics N.V. 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.

(AB1)67 70

SSB: SRP List Part 2 136 Light guide 139 140 Wi-Fi Antenna 141 141

Published by ER/EL 0965 BU TV Consumer Care, the Netherlands Subject to modification EN 3122 785 18311

2009-May-08

EN 2 Q549.2E LA1.

Revision List

1. Revision List

Manual xxxx xxx xxxx.0

• First release.

Manual xxxx xxx xxxx.1

• All Chapters: the following sets to the manual: see Table

2-1 Described Model numbers.

• Chapter 5: paragraph 5.8.10 PCI bus

• Chapter 6: paragraph 6.6 Service SSB delivered without

main software loaded added.

added.

2. Technical Specifications and, Connections

Index of this chapter:

2.1 Technical Specifications

2.2 Directions for Use

2.3 Connections

2.4 Chassis Overview

Notes:

• Figures can deviate due to the different set executions.

• Specifications are indicative (subject to change).

2.1 Technical Specifications

For on-line product support please use the links in Table 2-1. Here is product information available, as well as getting started, user manuals, frequently asked questions and software & drivers.

Table 2-1 Described Model numbers

CTN Styling Published in:

32PFL9604H/12

32PFL9604H/60

37PFL9604H/12

37PFL9604H/60

56PFL9954H/12

Elite Core 3122 785 18310

3122 785 18310

3122 785 18311

2.2 Directions for Use

You can download this information from the following websites:

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

2009-May-08

2.3 Connections

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NETWORK

AUDIO IN VGA

VGASERVICE UART

1234

Technical Specifications and, Connections

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Figure 2-1 Connection overview

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Technical Specifications and, Connections

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.

2.3.1 Side Connections

Head phone (Output)

Bk - Head phone 32 - 600 ohm / 10 mW ot

Cinch: Video CVBS - In, Audio - In

Rd - Audio R 0.5 V Wh - Audio L 0.5 V Ye - Video CVBS 1 V

/ 10 kohm jq

RMS

/ 10 kohm jq

RMS

/ 75 ohm jq

S-Video (Hosiden): Video Y/C - In

1 - Ground Y Gnd H 2 - Ground C Gnd H 3 - Video Y 1 V 4 - Video C 0.3 V

/ 75 ohm j

USB2.0

Figure 2-2 USB (type A)

1-+5V k 2 - Data (-) jk 3 - Data (+) jk 4 - Ground Gnd H

HDMI: Digital Video, Digital Audio - In (see HDMI 1, 2, 3 & 4 - Rear Connections)

Common Interface

68p - See diagram B07A SSB: CI: PCMCIA

Connector jk

2.3.2 Rear Connections

Service Connector (UART)

1 - Ground Gnd H 2 - UART_TX Transmit k 3 - UART_RX Receive j

VGA: Video RGB - In

Cinch: S/PDIF - Out

Bk - Coaxial 0.4 - 0.6V

/ 75 ohm kq

Cinch: Audio - Out

Rd - Audio - R 0.5 V Wh - Audio - L 0.5 V

/ 10 kohm kq

RMS

/ 10 kohm kq

RMS

EXT3: Cinch: Video YPbPr - In, Audio - In

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

/ 75 ohm jq

/ 10 kohm jq

RMS

/ 10 kohm jq

RMS

EXT1 & 2: Video RGB - In, CVBS - In/Out, Audio - In/Out

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Figure 2-4 SCART connector

1 - Audio R 0.5 V 2 - Audio R 0.5 V 3 - Audio L 0.5 V 4 - Ground Audio Gnd H

/ 1 kohm k

RMS

/ 10 kohm j

RMS

/ 1 kohm k

RMS

5 - Ground Blue Gnd H 6 - Audio L 0.5 V 7 - Video Blue 0.7 V 8 - Function Select 0 - 2 V: INT

/ 10 kohm j

RMS

/ 75 ohm jk

4.5 - 7 V: EXT 16:9

9.5 - 12 V: EXT 4:3 j

9 - Ground Green Gnd H 10 - n.c. 11 - Video Green 0.7 V 12 - n.c.

/ 75 ohm j

13 - Ground Red Gnd H 14 - Ground P50 Gnd H 15 - Video Red 0.7 V 16 - Status/FBL 0 - 0.4 V: INT

/ 75 ohm j

1 - 3 V: EXT / 75 ohm j 17 - Ground Video Gnd H 18 - Ground FBL Gnd H 19 - Video CVBS/Y 1 V 20 - Video CVBS 1 V 21 - Shield Gnd H

/ 75 ohm k

/ 75 ohm j

Aerial - In

- - IEC-type (EU) Coax, 75 ohm D

1 - Video Red 0.7 V 2 - Video Green 0.7 V 3 - Video Blue 0.7 V 4-n.c. 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 11 - n.c. 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

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Figure 2-3 VGA Connector

/ 75 ohm j

+5 V j

RJ45: Ethernet (if present)

Figure 2-5 Ethernet connector

1 - TD+ Transmit signal k 2 - TD- Transmit signal k 3 - RD+ Receive signal j 4 - CT Centre Tap: DC level fixation 5 - CT Centre Tap: DC level fixation 6 - RD- Receive signal j 7 - GND Gnd H 8 - GND Gnd H

Technical Specifications and, Connections

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Cinch: Audio - In (VGA/DVI)

Rd - Audio R 0.5 V Wh - Audio L 0.5 V

/ 10 kohm jq

RMS

/ 10 kohm jq

RMS

HDMI 1, 2, 3 & 4: Digital Video, Digital Audio - In

Figure 2-6 HDMI (type A) connector

1 - D2+ Data channel j 2 - Shield Gnd H 3 - D2- Data channel j 4 - D1+ Data channel j

2.4 Chassis Overview

Refer to chapter Block Diagrams for PWB/CBA locations.

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 - n.c. 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

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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. Of de set ontploft!

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 MΩ and 12 MΩ.

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.

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 kΩ).

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

• All capacitor values are given in micro-farads (μ=× 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.

-9

), or pico-farads (p =× 10

. Select

-12

-6

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

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.

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Precautions, Notes, and Abbreviation List

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MODEL :

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128W

AG 1A0617 000001

VHF+S+H+UHF

BJ3.0E LA

EN 7Q549.2E LA 3.

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 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. AG is Bruges), 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 2006 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 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 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

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 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.

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 MIPS Microprocessor without Interlocked

Pipeline-Stages; A RISC-based

microprocessor MOP Matrix Output Processor MOSFET Metal Oxide Silicon Field Effect

Transistor, switching device MPEG Motion Pictures Experts Group MPIF Multi Platform InterFace MUTE MUTE Line NC Not Connected NICAM Near Instantaneous Compounded

Audio Multiplexing. This is a digital

sound system, mainly used in Europe. NTC Negative Temperature Coefficient,

non-linear resistor NTSC National Television Standard

Committee. Color system mainly used

in North America and Japan. Color

carrier NTSC M/N= 3.579545 MHz,

NTSC 4.43= 4.433619 MHz (this is a

VCR norm, it is not transmitted off-air) NVM Non-Volatile Memory: IC containing

TV related data such as alignments O/C Open Circuit OSD On Screen Display OTC On screen display Teletext and

Control; also called Artistic (SAA5800) P50 Project 50: communication protocol

between TV and peripherals PAL Phase Alternating Line. Color system

mainly used in West Europe (color

carrier= 4.433619 MHz) and South

America (color carrier PAL M=

3.575612 MHz and PAL N= 3.582056

MHz) PCB Printed Circuit Board (same as “PWB”) PCM Pulse Code Modulation PDP Plasma Display Panel PFC Power Factor Corrector (or Pre-

conditioner) PIP Picture In Picture PLL Phase Locked Loop. Used for e.g.

FST tuning systems. The customer

can give directly the desired frequency POD Point Of Deployment: a removable

CAM module, implementing the CA

system for a host (e.g. a TV-set) POR Power On Reset, signal to reset the uP PTC Positive Temperature Coefficient,

non-linear resistor PWB Printed Wiring Board (same as “PCB”)

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Precautions, Notes, and Abbreviation List

EN 9Q549.2E LA 3.

PWM Pulse Width Modulation QRC Quasi Resonant Converter QTNR Quality Temporal Noise Reduction QVCP Quality Video Composition Processor RAM Random Access Memory RGB Red, Green, and Blue. The primary

color signals for TV. By mixing levels of R, G, and B, all colors (Y/C) are

reproduced. RC Remote Control RC5 / RC6 Signal protocol from the remote

control receiver RESET RESET signal ROM Read Only Memory RSDS Reduced Swing Differential Signalling

data interface R-TXT Red TeleteXT SAM Service Alignment Mode S/C Short Circuit SCART Syndicat des Constructeurs

d'Appareils Radiorécepteurs et

Téléviseurs SCL Serial Clock I SCL-F CLock Signal on Fast I SD Standard Definition SDA Serial Data I SDA-F DAta Signal on Fast I

C bus

C bus SDI Serial Digital Interface, see “ITU-656” SDRAM Synchronous DRAM SECAM SEequence Couleur Avec Mémoire.

Color system mainly used in France and East Europe. Color carriers=

4.406250 MHz and 4.250000 MHz SIF Sound Intermediate Frequency SMPS Switched Mode Power Supply SoC System on Chip SOG Sync On Green SOPS Self Oscillating Power Supply SPI Serial Peripheral Interface bus; a 4-

wire synchronous serial data link

standard S/PDIF Sony Philips Digital InterFace SRAM Static RAM SRP Service Reference Protocol SSB Small Signal Board STBY STand-BY SVGA 800 × 600 (4:3) SVHS Super Video Home System SW Software SWAN Spatial temporal Weighted Averaging

Noise reduction SXGA 1280 × 1024 TFT Thin Film Transistor THD Total Harmonic Distortion TMDS Transmission Minimized Differential

Signalling TXT TeleteXT TXT-DW Dual Window with TeleteXT UI User Interface uP Microprocessor UXGA 1 600 × 1 200 (4:3) V V-sync to the module VESA Video Electronics Standards

Association VGA 640 × 480 (4:3) VL Variable Level out: processed audio

output toward external amplifier VSB Vestigial Side Band; modulation

method WYSIWYR What You See Is What You Record:

record selection that follows main

picture and sound WXGA 1280 × 768 (15:9) XTAL Quartz crystal XGA 1024 × 768 (4:3)

Y Luminance signal Y/C Luminance (Y) and Chrominance (C)

signal

YPbPr Component video. Luminance and

scaled color difference signals (B-Y and R-Y)

YUV Component video

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Mechanical Instructions

4. Mechanical Instructions

Index of this chapter:

4.1 Cable Dressing and Taping

4.2 Service Positions

4.3 Assy/Panel Removal

4.4 Set Re-assembly

4.1 Cable Dressing and Taping

Notes:

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

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Figure 4-1 Cable dressing 32”

Mechanical Instructions

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Figure 4-2 Cable dressing 37"

Figure 4-3 Cable dressing 56" (21:9)

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Mechanical Instructions

4.2 Service Positions

For easy servicing of this set, there are a few possibilities created:

• The buffers from the packaging.

• Foam bars (created for Service).

4.2.1 Foam Bars

4.3.3 Ambi Light

Each Ambi Light unit is mounted on a subframe. Refer to

Figure 4-5

for details.

Figure 4-4 Foam bars

The foam bars (order code 3122 785 90580 for two pieces) can be used for all types and sizes of Flat TVs. See Figure 4-4

for details. Sets with a display of 42" and larger, require four foam bars [1]. Ensure that the foam bars are always supporting the cabinet and never only the display. Caution: Failure to follow these guidelines can seriously damage the display! By laying the TV face down on the (ESD protective) foam bars, a stable situation is created to perform measurements and alignments. By placing a mirror under the TV, you can monitor the screen.

4.3 Assy/Panel Removal

4.3.1 Rear Cover

Warning: Disconnect the mains power cord before you remove

the rear cover. Note: it is not necessary to remove the stand while removing the rear cover.

Removing the Piezo Touch Control Panel PWB requires special attention. Refer to Piezo Touch Control Panel details.

1. Remove all screws of the rear cover.

2. Lift the rear cover from the TV. Make sure that wires and

flat coils are not damaged while lifting the rear cover from

4.3.2 Speakers

the set.

Each speaker unit is mounted with two screws. A sticker on the the unit indicates if it is the right (“R”) or left (“L”) box, seen from the front side of the set. When defective, replace the whole unit.

Figure 4-5 Ambi Light unit

1. Remove the Ambi Light cover [1].

2. Unplug the connector(s).

3. The PWB can now be taken from the subframe. When defective, replace the whole unit. Note: the screws that secure the AmbiLight units are longer than the other screws.

4.3.4 Main Supply Panel

1. Unplug all connectors.

2. Remove the fixation screws.

3. Take the board out. When defective, replace the whole unit.

4.3.5 IR & LED Board

Refer to Figure 4-6

for details.

for

2009-May-08

Figure 4-6 IR & LED Board

1. Remove the Main Supply Panel as earlier described.

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2. Remove the stand [1] and its subframe [2].

3. Now you gain access the IR & LED board. When defective, replace the whole unit.

4.3.6 Piezo Touch Control Panel

The flexfoil between Piezo Flexfoil Assy (mounted on the plastic rim of the set), and the PWB as described below, is extremely vulnerable. Do not pull hard at the PWB or flexfoil. Once the flexfoil has been damaged, the entire plastic rim of the set (with the touch-control pads) has to be swapped!

The Piezo Touch Control Panel PWB contains ESD sensitive components, implying that necessary industrial ESD precautions must be taken during removing or remounting. Refer to Figure 4-7

, Figure 4-8 and Figure 4-9 for details.

Mechanical Instructions

Figure 4-9 Piezo Touch Control Panel -3-

1. To unplug the flexfoil connector, first the outer part of the connector has to be moved upwards [3], before this part can be turned sidewards [4] as shown in the picture. Now the flexfoil can be removed from the connector and the PWB can be taken out of the set.

When defective, replace the whole unit.

EN 13Q549.2E LA 4.

4.3.7 Small Signal Board (SSB)

Caution: It is mandatory to remount screws at their original

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

1. Remove the Wi-Fi module that is mounted on the SSB.

2. Unplug all connectors.

3. Remove the screws that secure the board.

4. The SSB can now be taken out of the set.

4.3.8 LCD Panel

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Figure 4-7 Piezo Touch Control Panel -1-

1. Gently pull the bottom side of the PWB out of the cabinet until you can unplug the connector [1].

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Refer to Figure 4-10

and Figure 4-11 for details.

1. Remove the Piezo Touch Control Panel PWB as earlier described.

2. Remove the AL covers as earlier described.

3. Remove both Main Supply Panel and SSB as earlier described.

4. Remove the subframes of Main Power Supply and SSB [1].

5. Remove both AL subframes (with the AL unit still mounted on it) by unplugging the connector [2] and removing the screws [3].

6. Remove all remaining adhesive tapes and remove all cables from their clamps.

7. Carefully remove the conducting tape [4], it must be reused during re-assembly!

8. Remove the remaining screws (indicated with an arrow) that hold the plastic rim and remove the rim.

9. Now the LCD Panel can be lifted from the front cabinet. The panel has to be slided downwards once it has been lifted, because the brackets on the top cannot be removed from the cabinet. You will see a conducting foam between metal front and panel, near the location of the Piezo Touch Control Panel.

When mounting a new LCD Panel:

1. Check if this conducting foam between panel and metal front is in place !

Figure 4-8 Piezo Touch Control Panel -2-

2. Re-attach the conducting tape between LCD Panel and metal rim [4] !

1. Now gently pull the top side of the PWB out of the cabinet without damaging the flexfoil until you can unplug the connector [2].

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Mechanical Instructions

Figure 4-10 LCD Panel -1-

Figure 4-11 LCD Panel -2-

4.3.9 Wi-Fi antenna

Follow the instructions for LCD Panel until “remove plastic rim”. After removal of this rim, you gain access to the Wi-Fi antennas.

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.

• Pay special attention not to damage the EMC foams in the set. Ensure that EMC foams are mounted correctly.

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Service Modes, Error Codes, and Fault Finding

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SDM

5. Service Modes, Error Codes, and Fault Finding

EN 15Q549.2E LA 5.

Index of this chapter:

5.1 Test Points

5.2 Service Modes

5.3 Stepwise Start-up

5.4 Service Tools

5.5 Error Codes

5.6 The Blinking LED Procedure

5.7 Protections

5.8 Fault Finding and Repair Tips

5.9 Software Upgrading

5.1 Test Points

As most signals are digital, it will be difficult to measure waveforms with a standard oscilloscope. However, several key ICs are capable of generating test patterns, which can be controlled via ComPair. In this way it is possible to determine which part is defective.

Perform measurements under the following conditions:

• Service Default Mode.

• Video: Colour bar signal.

• Audio: 3 kHz left, 1 kHz right.

5.2 Service Modes

Service Default mode (SDM) and Service Alignment Mode (SAM) offers several features for the service technician, while the Customer Service Mode (CSM) is used for communication between the call centre and the customer.

This chassis also offers the option of using ComPair, a hardware interface between a computer and the TV chassis. It offers the abilities of structured troubleshooting, error code reading, and software version read-out for all chassis. (see also section “5.4.1 ComPair

”).

• All service-unfriendly modes (if present) are disabled, like: – (Sleep) timer. – Child/parental lock. – Picture mute (blue mute or black mute). – Automatic volume levelling (AVL). – Skip/blank of non-favourite pre-sets.

How to Activate SDM

For this chassis there are two kinds of SDM: an analog SDM and a digital SDM. Tuning will happen according Table 5-1

• Analog SDM: use the standard RC-transmitter and key in the code “062596”, directly followed by the “MENU” (or HOME) button. Note: It is possible that, together with the SDM, the main menu will appear. To switch it “off”, push the “MENU”(or HOME) button again.

• Digital SDM: use the standard RC-transmitter and key in the code “062593”, directly followed by the “MENU” (or HOME) button. Note: It is possible that, together with the SDM, the main menu will appear. To switch it “off”, push the “MENU” (or HOME) button again.

• Analog SDM can also be activated by grounding for a moment the solder pad on the SSB, with the indication “SDM” (see Service mode pad

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 Service Default Mode (SDM)

Purpose

• To create a pre-defined setting, to get the same measurement results as given in this manual.

• To override SW protections detected by stand-by processor and make the TV start up to the step just before protection (a sort of automatic stepwise start-up). See section “5.3 Stepwise Start-up

• To start the blinking LED procedure where only LAYER 2 errors are displayed. (see also section “5.5 Error Codes

Specifications

Table 5-1 SDM default settings

Region Freq. (MHz)

Europe, AP(PAL/Multi) 475.25 PAL B/G

Europe, AP DVB-T 546.00 PID

• All picture settings at 50% (brightness, colour, contrast).

• All sound settings at 50%, except volume at 25%.

”.

Video: 0B 06 PID PCR: 0B 06 PID Audio: 0B 07

Default system

DVB-T

Figure 5-1 Service mode pad

After activating this mode, “SDM” will appear in the upper right corner of the screen (when a picture is available).

”).

How to Navigate

When the “MENU” (or HOME) button is pressed on the RC transmitter, the TV set will toggle between the SDM and the normal user menu.

How to Exit SDM

Use one of the following methods:

• Switch the set to STAND-BY via the RC-transmitter.

• Via a standard customer RC-transmitter: key in “00”sequence.

5.2.2 Service Alignment Mode (SAM)

Purpose

• To perform (software) alignments.

• To change option settings.

• To easily identify the used software version.

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MODEL:

32PF9968/10

PROD.SERIAL NO:

AG 1A0620 000001

040

39mm

27mm

(CTN Sticker)

Display Option

Code

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Service Modes, Error Codes, and Fault Finding

2009-May-08

• To view operation hours.

• To display (or clear) the error code buffer.

How to Activate SAM

Via a standard RC transmitter: Key in the code “062596” directly followed by the “INFO” button. After activating SAM with this method a service warning will appear on the screen, continue by pressing the “OK” button on the RC.

Contents of SAM (see also Table 6-4

)

• Hardware Info. – A. SW Version. Displays the software version of the

main software (example: Q5492-1.2.3.4 = AAAAB_X.Y.W.Z).

• AAAA= the chassis name.

• B= the SW branch version. This is a sequential number (this is no longer the region indication, as the software is now multi-region).

• X.Y.W.Z= the software version, where X is the main version number (different numbers are not compatible with one another) and Y.W.Z is the sub version number (a higher number is always compatible with a lower number).

– B. STBY PROC Version. Displays the software

version of the stand-by processor.

– C. Production Code. Displays the production code of

the TV, this is the serial number as printed on the back of the TV set. Note that if an NVM is replaced or is initialized after corruption, this production code has to be re-written to NVM. ComPair will foresee in a possibility to do this.

• Operation Hours. Displays the accumulated total of operation hours (not the stand-by hours). Every time the TV is switched “on/off”, 0.5 hours is added to this number.

• Errors (followed by maximum 10 errors). The most recent error is displayed at the upper left (for an error explanation see section “5.5 Error Codes

”).

• Reset Error Buffer. When “cursor right” (or the “OK button) is pressed and then the “OK” button is pressed, the error buffer is reset.

• Alignments. This will activate the “ALIGNMENTS” submenu. See Chapter 6. Alignments.

• Dealer Options. Extra features for the dealers.

• Options. Extra features for Service. For more info regarding option codes, 6. Alignments

. Note that if the option code numbers are changed, these have to be confirmed with pressing the “OK” button before the options are stored. Otherwise changes will be lost.

• Initialize NVM. The moment the processor recognizes a corrupted NVM, the “initialize NVM” line will be highlighted. Now, two things can be done (dependent of the service instructions at that moment): – Save the content of the NVM via ComPair for

development analysis, before initializing. This will give the Service department an extra possibility for diagnosis (e.g. when Development asks for this).

– Initialize the NVM.

Note: When the NVM is corrupted, or replaced, there is a high possibility that no picture appears because the display code is not correct. So, before initializing the NVM via the SAM, a picture is necessary and therefore the correct display option has to be entered. Refer to Chapter 6. Alignments

for details. To adapt this option, it’s advised to use ComPair (the correct HEX values for the options can be found in Chapter 6.

Alignments) or a method via a standard RC (described below).

Changing the display option via a standard RC: Key in the code “062598” directly followed by the “MENU” (or HOME) button and “XXX” (where XXX is the 3 digit decimal display code as mentioned in Table 6-3 digits, also the leading zero’s. If the above action is successful, the front LED will go out as an indication that the RC sequence

). Make sure to key in all three

was correct. After the display option is changed in the NVM, the

TV will go to the Stand-by mode. If the NVM was corrupted or empty before this action, it will be initialized first (loaded with default values). This initializing can take up to 20 seconds.

Figure 5-2 Location of Display Option Code sticker

• Store - go right. All options and alignments are stored when pressing “cursor right” (or the “OK” button) and then the “OK”-button.

• SW Maintenance. – SW Events. Not useful for Service purposes. In case

of specific software problems, the development department can ask for this info.

– HW Events. Not useful for Service purposes. In case

of specific software problems, the development department can ask for this info.

• Operation hours display. Displays the accumulated total of display operation hours. So, this one keeps up the lifetime of the display itself, mainly to compensate the degeneration behaviour.

• Test settings. For development purposes only.

• Development file versions. Not useful for Service purposes, this information is only used by the development department.

• Upload to USB. To upload several settings from the TV to an USB stick, which is connected to the SSB. The items are “Channel list”, “Personal settings”, “Option codes”, “Display-related alignments” and “History list”. First a

directory “repair\” has to be created in the root of the USB stick. To upload the settings select each item

separately, press “cursor right” (or the “OK” button), confirm with “OK” and wait until “Done” appears. In case the download to the USB stick was not successful “Failure” will appear. In this case, check if the USB stick is connected properly and if the directory “repair” is present in the root of the USB stick. Now the settings are stored onto the USB stick and can be used to download onto another TV or other SSB. Uploading is of course only possible if the software is running and if a picture is available. This method is created to be able to save the customer’s TV settings and to store them into another SSB.

• Download to USB. To download several settings from the USB stick to the TV, same way of working needs to be followed as with uploading. To make sure that the download of the channel list from USB to the TV is executed properly, it is necessary to restart the TV and tune to a valid preset if necessary.

Note: The “History list item” can not be downloaded from USB to the TV. This is a “read-only” item. In case of specific problems, the development department can ask for this info.

How to Navigate

• In SAM, the menu items can be selected with the “CURSOR UP/DOWN” key on the RC-transmitter. The selected item will be highlighted. When not all menu items fit on the screen, move the “CURSOR UP/DOWN” key to display the next/previous menu items.

• With the “CURSOR LEFT/RIGHT” keys, it is possible to: – (De) activate the selected menu item. – (De) activate the selected sub menu.

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EN 17Q549.2E LA 5.

• With the “OK” key, it is possible to activate the selected action.

How to Exit SAM

Use one of the following methods:

• Switch the TV set to STAND-BY via the RC-transmitter.

• Via a standard RC-transmitter, key in “00” sequence, or select the “BACK” key.

5.2.3 Customer Service Mode (CSM)

Purpose

When a customer is having problems with his TV-set, he can call his dealer or the Customer Helpdesk. The service technician can then ask the customer to activate the CSM, in order to identify the status of the set. Now, the service technician can judge the severity of the complaint. In many cases, he can advise the customer how to solve the problem, or he can decide if it is necessary to visit the customer. The CSM is a read only mode; therefore, modifications in this mode are not possible. When in this chassis CSM is activated, a testpattern will be displayed during 5 seconds (1 second Blue, 1 second Green and 1 second Red, then again 1 second Blue and 1 second Green). This test pattern is generated by the PNX5100. So if this test pattern is shown, it could be determined that the back end video chain (PNX5100, LVDS, and display) of the SSB is working. When CSM is activated and there is a USB stick connected to the TV, the software will dump the complete CSM content to the USB stick. The file (Csm.txt) will be saved in the root of the USB stick. This info can be handy if no information is displayed.

Also when CSM is activated, the LAYER 1 error is displayed via blinking LED. Only the latest error is displayed. (see also section 5.5 Error Codes

How to Activate CSM

Key in the code “123654” via the standard RC transmitter.

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

How to Navigate

By means of the “CURSOR-DOWN/UP” knob on the RCtransmitter, can be navigated through the menus.

Contents of CSM

The contents are reduced to 3 pages: General, Software versions and Quality items. The group names itself are not shown anywhere in the CSM menu.

NVM. ComPair will foresee in a possibility to do this. This identification number is the 12nc number of the SSB.

• 12NC display. Shows the 12NC of the display.

• 12NC supply. Shows the 12NC of the supply.

• 12NC “fan board”. Shows the 12NC of the “fan board”module (for sets with LED backlight)

• 12NC “LED Dimming Panel”. Shows the 12NC of the LED dimming Panel (for sets with LED backlight).

Software versions

• Current main SW. Displays the built-in main software version. In case of field problems related to software, software can be upgraded. As this software is consumer upgradeable, it will also be published on the Internet. Example: Q5492_1.2.3.4

• Standby SW. Displays the built-in stand-by processor software version. Upgrading this software will be possible via ComPair or via USB (see section 5.9 Software

Upgrading).

Example: STDBY_88.68.1.2.

• MOP ambient light SW. Displays the MOP ambient light EPLD SW.

• LED Dimming SW. Displays the LED Dimming EPLD SWversion (for sets with LED backlight).

• Local contrast SW. Displays the MOP local contrast SWversion.

Quality items

• Signal quality. Poor / average /good

• Child lock. Not active / active. This is a combined item for locks. If any lock (Preset lock, child lock, lock after or parental lock) is active, the item shall show “active”.

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

• Ethernet MAC address. Displays the MAC address present in the SSB.

• Wireless MAC address. Displays the wireless MAC address to support the Wi-Fi functionality.

• BDS key. Indicates if the “BDS level 1” key is valid or not.

• CI slot present. If the common interface module is detected the result will be “YES” or “NO”.

• HDMI input format. The detected input format of the HDMI.

• HDMI audio input stream. The HDMI audio input stream is displayed: present / not present.

• HDMI video input stream. The HDMI video input stream is displayed: present / not present.

How to Exit CSM

Press “MENU” (or HOME) / “Back” key on the RC-transmitter.

General

• 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. ComPair will foresee in a possibility to do this.

• 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. ComPair will foresee a in possibility to do this.

• Installed date. Indicates the date of the first installation of the TV. This date is acquired via time extraction.

• Options 1. Gives the option codes of option group 1 as set in SAM (Service Alignment Mode).

• Options 2. Gives the option codes of option group 2 as set in SAM (Service Alignment Mode).

• 12NC SSB. Gives an identification of the SSB as stored in NVM. Note that if an NVM is replaced or is initialized after corruption, this identification number has to be re-written to

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EN 18 Q549.2E LA5.

Active

Semi St by

St by

Mains

off

GoToProtection

-WakeUp requested

-Acquisition needed

-No data Acquisition required

-tact SW pushed

-last status is hibernate after mains ON

- St by requested

-tact SW pushed

WakeUp

requested

Protection

WakeUp

requested

(SDM)

GoToProtection

Hibernate

-Tact switch Pushed

-last status is hibernate after mains ON

Tact switch

pushed

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5.3 Stepwise Start-up

When the TV is in a protection state due to an error detected by stand-by software (error blinking is displayed) and SDM is activated via shortcutting the pins on the SSB, the TV starts up until it reaches the situation just before protection. So, this is a kind of automatic stepwise start-up. In combination with the start-up diagrams below, you can see which supplies are present at a certain moment. Important to know is, that if e.g. the 3V3 detection fails and thus error layer 2 = 18 is blinking while the TV is restarted via SDM, the Stand-by Processor will enable the 3V3, but the TV set will not go to protection now. The TV will stay in this situation until it is reset (Mains/AC Power supply interrupted). Caution: in case the start-up in this

mode with a faulty FET 7U08 is done, you can destroy all IC’s supplied by the +3V3, due to overvoltage (12V on 3V3-line). It is recommended to measure first the FET 7U08 or others FET’s on shortcircuit before activating SDM via the service pads.

The abbreviations “SP” and “MP” in the figures stand for:

• SP: protection or error detected by the Stand-by Processor.

• MP: protection or error detected by the MIPS Main Processor.

2009-May-08

Figure 5-3 Transition diagram

EJTAG probe connected ?

Yes

Release AVC system r eset

Feed warm boot script

To I_17660_125b.eps To I_17660_125b.eps

Cold boot?

Yes

Set I²C slave address

of Standby µP to (A0h)

An EJTAG probe (e.g. WindPower ICE probe) can be connected for Linux Kernel debugging purposes.

This will a llow access to NVM a nd NAND FLASH and can not be done earlier because the FLASH needs to be in Write Protect as long as the supplies are not available.

Detect EJTAG debug probe

(pulling pin of the probe interface to

ground by inserting EJTAG probe)

Relea se AVC system r eset

Feed cold boot script

Release AVC system r eset Feed initializing boot script

disable alive mechanism

Initialise I/O pins of the st-by µP:

- Switch reset-AVCLOW (reset state)

- Switch WP-NandFlash LOW (protected)

- Switch reset-system LOW (reset state)

- Switch reset-5100 LOW (reset state)

- Switch reset-Ethernet LOW (reset state)

- Switch reset-ST7100 LOW (reset state)

- keep reset-NVM high, Audio-reset and Audio-Mute-Up HIGH

Off

Standby Supply starts running.

All standby supply voltages become available .

st-by µ P resets

Stand by or

Protection

Mains is app lied

- Switch Audio-Reset high.

It is low in the standby mode if the standby

mode lasted longer than 10s.

start keyboard scanning, RC detection. Wake up reasons are

off.

If the protection state was left by short circuiting the SDM pins, detection of a protection condition during

startup will stall the startup. Protection conditions in a

playing set will be ignored. The protection mode will

not be entered.

Switch LOW the RESET-NVM line to allow access to NVM. (Add a 2ms delay before trying to address the NVM to allow correct NVM

initialization, this is not issue in this setup, the delay is automatically

covered by the architectural setup)

Release Reset-PNX5100.

PNX5100 will start b ooting.

Wait 10ms (minimum) to allow the bootscript

of the PNX5100 to configure the PCI arbiter

Before PNX8541 boots, the PNX5100 should have set its PCI arbiter (bootscript command). To allow this, approx. 1ms is needed. This 1ms is extended to 10ms to also give some relaxation to the supplies.

Switch HIGH the WP-NandFlash to

allow access to NAND Flash

+12V, +/-12Vs, AL and Bolt-on power

is switched on, followed by the +1V2 DCDC converter

Enable the supply fault detection

algorithm

Yes

Detect-1 I/O line

High?

Switch ON Platform and display supply by switching

LOW the Standby line.

This enables the +3V3 and +5V converter. As a result, also +5V-tuner, +2V5, +1V8PNX8541 and +1V8-PNX5100 become available.

yes

Enable the DCDC converter for +3V3 and

+5V. (EN ABLE-3V3)

Voltage output error:

Layer1: 2

Layer2: 18

Important remark; the appearance of the +12V will start the +1V2 DCDC converter automatically

Yes

Supply-fault I/O

High?

The supply-fault line is a combination of the DCDC converters and the audio protection line.

1V2 DCDC or class D error:

Layer1: 2

Layer2: 19

Enter protection

Detect2 high received

within 1 second?

Power-OK er ror:

Layer1: 3

Layer2: 16

Enter protection

Yes

Supply-fault I/O

High?

3V3 / 5V DCDC or class D error:

Layer1: 2

Layer2: 11

Enter protection

Wait 50ms

Enter protection

Delay of 50ms needed because of the latency of the detect-1 circuit. This delay is also needed for the PNX5100. The reset of the PNX5100 should only be released 10ms after powering the IC.

Detect2 should be polled on the standard 40ms interval and startup should be continued when detect2 becomes high.

Yes

Detect -2 I/ O line

High?

Disable 3V3, swit ch standby line high and wait 4 seconds

Added to make the system more robust to power dips during startup. At this point the regular supply fault detection algorithm which normally detects power dips is not up and running yet.

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EN 19Q549.2E LA 5.

Figure 5-4 “Off” to “Semi Stand-by” flowchart (part 1)

2009-May-08

EN 20 Q549.2E LA5.

Yes

MIPS reads the wake up reason

from standby µP.

Semi-Standby

initialize tuner, Master IF and channel

decoder

Initialize video processing IC's

Initialize source select ion

initialize Aut oTV

3-th try?

Blink Code as

error code

Bootscript ready

in 1250 ms?

Yes

Enable Alive check mechanism

Wait until AVC starts to

communicate

SW initializatio n

succeeded

within 20s?

Switch Standby

I/O line high.

RPC start (comm. protocol)

Set I²C slave address

of Standby µP to (60h)

Yes

Disable all supply related protections and

switch off the +3V3 +5V DC/DC converter.

switch off the remaining DC/DC

converters

Wait 5ms

Switch AVC PNX85 41

in reset (active low )

Wait 10ms

Switch the NVM reset

line HIGH.

Flash to Ram

image transfer succeeded

within 30s?

Yes

Code =

Layer1: 2

Layer2: 53

Code =

Layer1: 2

Layer2: 15

Initialize Ambilight with Lights off.

Timing need to be updated if more mature info is available.

Timing needs to be updated if more matur e info is available.

Downloaded successfully ?

Download firmware into the channel

decoder

Third try? No

Yes

Log channel decoder error:

Layer1: 2

Layer2: 37

Yes

Initialize audio

Enter protection

Release reset MPEG4 module:

BOLT-ON-IO: High

MPEG4 module will start booting

autonomously.

Wait 3000 ms

Start alive IIC polling

mechanism

POR polling positive ?

yes

Log SW event:

STi7100PorFailure

Wait 200 ms

POR polling positive?yes

bootSTi7100PorFailure:

Log HW error

Layer1: 2

Layer2: 38

and generate cold boot

Alive

polling

Log SW event

STi7100AliveFailedError and generate fast cold reboot eventually followed by a cold

reboot.

NOK

Reset-system is switched HIGH by the

AVC at the end of the bootscript

AVC releases Reset-Ethernet when the

end of the AVC boot-script is detected

This cannot be done through the bootscript, the I/O is on the standby µP

Reset- system is connected to USB

From I_17660_125a.eps From I_17660_125a.eps

-reset,

4to1HDMI Mux and channel decoder.

Reset-Audio and Audio-Mute-Up are

switched by MIPS code later on in the

startup process

Reset-syst em is switched HIGH by the

AVC at the end of the bootscript

AVC releases Reset-Ethernet when the

end of the AVC boot-script is detected

Reset-Audio and Audio-Mute-Up are

switched by MIPS code later on in the

startup process

Switch on the display in case of a LED backlight

display by sending the TurnOnDisplay(1) (I²C)

command to the PNX5100

In case of a LED backlight display, a LED DIM panel is present which is fed by the Vdisplay. To power the LED DIM Panel, the Vdisplay switch driven by the PNX5100 must be closed. The display startup sequence is taken care of by the LED DIM panel.

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Service Modes, Error Codes, and Fault Finding

Figure 5-5 “Off” to “Semi Stand-by” flowchart (part 2)

2009-May-08

Service Modes, Error Codes, and Fault Finding

Active

Semi Standby

action holder: AVC

autonomous action

action holder: St-by

Initialize audio and video

processing IC's and functions

according needed use case.

Assert RGB video blanking

and audio mute

Wait until previous on-state is left more than 2

seconds ago. (to prevent LCD display problems)

The assumption here is t hat a fast toggle (<2s)

can only happen during ON-> SEMI -> ON. In

these states, the AVC is still active and can

provide the 2s delay. If the transition ON-> SEMI-

>STBY -> SEMI -> ON can be made in less than 2s,

the semi -> stby transition has to be delayed

until the requirement is met.

Switch Audio -Reset low and wait 5ms

Constraints taken into account:

- Display may only be started when valid LVDS output clock can be delivered by the AVC .

- Between 5 and 50 ms after power is supplied, display should receive valid lvds clock .

- minimum wait time to switch on the lamp after power up is 200ms.

unblank the video.

Wait until valid and stable audio and video , corresponding to

the requested output is delivered by the AVC.

The higher level requirement is that audio and

video should be demuted without transient

effects and that the audio should be demuted

maximum 1s before or at the same time as the

unblanking of the video.

Release audio mute and wait 100ms before any other audio

handling is done (e.g. volume change)

CPipe already generates a valid output

clock in t he semi -standby st ate : display

startup can start immediately when leaving

the semi-standby state.

wait 250ms (min. = 200ms)

Switch on LCD backlight

(Lamp-ON)

Switch on the display by sending the

TurnOnDisplay(1) (I²C) command to the PNX5100

The timings to be used in

combination with the PanelON

comman d for th is specific d isplay

Switch on the Ambilight functionality according the last status

settings.

The higher level requirement is that the

ambilig ht fu nctionality m ay not be sw itched on

before the backlight is turned on in case the

set contains a CE IPB inverter supply.

I_17660_126.eps

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EN 21Q549.2E LA 5.

Figure 5-6 “Semi Stand-by” to “Active” flowchart

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EN 22 Q549.2E LA5.

Active

Semi Standby

action holder: AVC

autonomous action

action holder: St-by

Initialize audio and video

processing IC's and functions

according needed use case.

Assert RGB video blanking

and audio mute

Wait until previous on-state is left more than 2

seconds ago. (to prevent LCD display problems)

The assumption here is t hat a fast toggle (<2s)

can only happen during ON->SEMI ->ON. In

these states, the AVC is still active and can

provide t he 2s delay. If the tran sition ON -> SEMI-

->STBY-> SEMI -> ON can be made in less than 2s, the semi - > stby transition has to be delayed

until the requirement is met.

Switch Audio-Reset low and wait 5ms

Constraints taken into account:

- Display may only be started when valid LVDS output clock can be delivered by the AVC .

- Between 5 and 50 ms after power is supplied, display should receive valid lvds clock .

- minimum wait time to switch on the lamp after power up is 200ms.

- To have a reliable operation of the backlight, the backlight should be driven with a PWM duty cycle of 100% during the first second. Only after this first one or two seconds, the PWM may be set to the required output level (Note that the PWM output should be present before the backlight is switched on). To minimize the artefacts, the picture should only be unblanked after these first seconds.

Restore dimming backlight feature, PWM and BOOST output

and unblank the video.

Wait until valid and stable audio and video , corresponding to the requested

output is delivered by the AVC

AND

[the backlight PWM has been on for 1s (internal inverter LPL displays

OR the backlight PWM has been on for 2s (external inverter LPL displays)] .

The higher level requirement is that audio and

video should be demuted without transient

effects and that the audio should be demuted

maximum 1s before or at the same time as the

unblanking of the video.

Release audio mute and wait 100ms before any other audio

handling is done (e.g. volume change)

CPipe already generates a valid output clock in t he sem i -standby st ate: display

startup can start immediately when leaving

the semi-standby state.

wait 250ms (min. = 200ms)

Switch on L CD backlig ht

(Lamp-ON)

Switch off the dimming backlight feature, set

the BOOST control to nominal and make sure

PWM output is set to 100%

Switch on the display by sending the

TurnOnDisplay(1) (I²C) command to the PNX5100

Switch on the Ambilight functionality according the last status

settings .

The higher level requirement is that the

ambilig ht functio nality may not be sw itched on

before the backlight is turned on in case the

set contains a CE IPB inverter supply.

I_17660_127.eps

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Service Modes, Error Codes, and Fault Finding

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Figure 5-7 “Semi Stand-by” to “Active” flowchart LCD with preheat

Service Modes, Error Codes, and Fault Finding

EN 23Q549.2E LA 5.

Constraints taken into account:

- Display may only be started when valid LVDS output clock can be delivered by the AVC.

- Between 5 and 50 ms after power is supplied, display should receive valid lvds clock .

- minimum wait time to switch on the lamp after power up is 200ms.

Semi Standby

The assumption here is that a fast toggle (<2s)

can only happen during ON-> SEMI -> ON. In

these states, the AVC is still active and can

provide the 2s delay. If the t ransition ON -> SEMI-

>STBY->SEMI->ON can be made in less t han 2s,

the semi -> stby transition has to be delayed

CPipe already generates a valid output clock in t he sem i -standby st ate : display

startup can start immediately when leaving

until the requirement is met.

the semi-standby state.

Switch on the display by sending the OUTPUT-

ENABLE (I²C) command to the LED DIM panel

wait 250ms (min. = 200ms)

Switch on L CD backlig ht

Wait until previous on-state is left more than 2

seconds ago. (to prevent LCD display problems)

Assert RGB video blanking

TBC in def. spec

(Lamp-ON)

and audio mute

action holder: AVC

action holder: St-by

autonomous action

Initialize audio and video

processing IC's and functions

according needed use case.

The higher level requirement is that audio and

video should be demuted without transient

effects and that the audio should be demuted

maximum 1s before or at the same time as the

unblanking of the video.

The higher level requirement is that the

ambilig ht functio nality may not be sw itched on

before the backlight is turned on in case the

set contains a CE IPB inverter supply.

Figure 5-8 “Semi Stand-by” to “Active” flowchart (LED backlight)

Wait until valid and stable audio and video , corresponding to

the requested output is delivered by the AVC.

Switch Audio -Reset low and wait 5ms

Release audio mute and wait 100ms before any other audio

handling is done (e.g. volume change)

unblank the video.

Switch on the Ambilight functionality according the last status

settings .

Active

I_17660_128.eps

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EN 24 Q549.2E LA5.

Semi Standby

Active

action holder: AVC

autonomous action

action holder: St-by

Wait 25 0ms ( min. = 2 00ms)

Mute all sound outputs via softmute

Mute all video outputs

switch off LCD backlight

Force ext audio outputs to ground

(I/O: audio reset)

And wait 5ms

Switch off the display by sending the

TurnOnDisplay(0) (I²C) command to the PNX5100

switch o ff Am bilight

Set main amplifier mute (I/O: audio-mute)

Wait 100ms

Wait until Ambilight has faded out

(fixed wait time of x s)

The higher level requirement is that the

backlight may not be switched off before the

ambilight functionality is turned off in case the

set contains a CE IPB inverter supply.

I_17660_129.eps

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Service Modes, Error Codes, and Fault Finding

Figure 5-9 “Active” to “Semi Stand-by” flowchart (LCD non DFI)

2009-May-08

Service Modes, Error Codes, and Fault Finding

transfer Wake up reasons to the Stand by µP.

Stand by

Semi Stand by

action holder: MIPS

autonomous action

action holder: St-by

Disable all supply related protections and switch off

the DC/DC converters (ENABLE-3V3)

Switch OFF all supplies by swit ching H IGH t he

Standby I/O line

Switch AVC system in re set st ate

Switch reset-PNX5100 LOW

Switch reset-ST7100 LOW

Switch Reset-Ethernet LOW

Important remark:

release reset audio 10 sec after

entering sta ndb y to sa ve power

Wait 5ms

Wait 10ms

Switch the NVM reset line HIGH

Switch het WP-Nandflash LOW

Delay transition until ramping down of ambient light is

finished. *)

If ambientlight functionality was used in semi -standby

(lampadaire mode), switch off ambient light

*) If this is not performed and the set is switched to standby when the switch off of the ambilights is still ongoing , the lights will switch off abruptly when the supply is cut.

Switch Memories to self-refresh (this creates a more

stable condition when switching off the power).

I_17660_130.eps

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EN 25Q549.2E LA 5.

Figure 5-10 “Semi Stand-by” to “Stand-by” flowchart

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EN 26 Q549.2E LA5.

Protection

action holder: MIPS

autonomous action

action holder: St-by

Redefine wake up reasons for protection

state and transfer to stand-by µP.

Log the appropriate err or and

set stand-by flag in NVM

Ask stand-by µP to enter protection state

Flash the Protection-LED in order to indicate

protection state* (*): This can be the standby LED or the ON LED

depending on the availability in the set

Switch off LCD lamp supply

Wait 250ms (min. = 200ms)

Switch off LVDS signal

Switch off 12V LCD supply within a time frame of

min. 0.5ms to max. 50ms after LVDS switch off.

If needed to speed up this transition,

this block could be omitted . This is

depending on the outcome of the

safety investigations .

Disable all supply related protections and switch off

the +1V8 and the +3V3 DC/DC converter.

Switch OFF all supplies by switching HIGH the

Standby I/O line.

Switch AVC in r eset sta te

Wait 5ms

Wait 10ms

Switch the N VM r eset lin e HI GH.

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Service Modes, Error Codes, and Fault Finding

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Figure 5-11 “To Protection State” flowchart

Service Modes, Error Codes, and Fault Finding

EN 27Q549.2E LA 5.

5.4 Service Tools

5.4.1 ComPair

Introduction

ComPair (Computer Aided Repair) is a Service tool for Philips Consumer Electronics products. and offers the following:

1. ComPair helps to quickly get an understanding on how to repair the chassis in a short and effective way.

2. ComPair allows very detailed diagnostics and is therefore capable of accurately indicating problem areas. No knowledge on I because ComPair takes care of this.

3. ComPair speeds up the repair time since it can automatically communicate with the chassis (when the uP is working) and all repair information is directly available.

4. ComPair features TV software up possibilities.

Specifications

ComPair consists of a Windows based fault finding program and an interface box between PC and the (defective) product. The ComPair II interface box is connected to the PC via an USB cable. For the TV chassis, the ComPair interface box and the TV communicate via a bi-directional cable via the service connector(s). The ComPair fault finding program is able to determine the problem of the defective television, by a combination of automatic diagnostics and an interactive question/answer procedure.

How to Connect

This is described in the chassis fault finding database in ComPair.

ComPair II

RC in

Optional

Switch

Power ModeLink/

Activity

HDMI I

RC out

C only

Figure 5-12 ComPair II interface connection

Caution: It is compulsory to connect the TV to the PC as

shown in the picture above (with the ComPair interface in between), as the ComPair interface acts as a level shifter. If one connects the TV directly to the PC (via UART), ICs will be blown!

How to Order

ComPair II order codes:

• ComPair II interface: 3122 785 91020.

• Software is available via the Philips Service web portal.

• ComPair UART interface cable for Q54x.x. (using 3.5 mm Mini Jack connector): 3138 188 75051.

Note: While encounting problems, contact the local support desk.

C or UART commands is necessary,

TO TV

UART SERVICE

CONNECTOR

I2C SERVICE CONNECTOR

Multi

function

UART SERVICE

CONNECTOR

ComPair II Developed by Philips Brugge

Optional power

5V DC

RS232 /UART

E_06532_036.eps

150208

5.4.2 Memory and Audio Test

With this tool you can test the memory of the PNX8543, as well if the PNX5100 is enabled and audio-testing.

What is needed?

– An USB-stick – “TESTSCRIPT Q549”. Downloadable from the Philips

Service website from the section “Software for Service only”

– A ComPair/service cable (3138 188 75051).

Procedure

Create a directory “JETTFILES” under the root of the USB-stick – Place “MemTestTV543.bin” and “autojett.bin” (available in

“TESTSCRIPT Q549”) under the directory “JETTFILES”

– Install the computer program “BOARDTESTLOGGER”

(available in “TESTSCRIPT Q549”) on the PC

– Connect a “ComPair/service”-cable from the service-

connector in the set, into the “multi function” jack at the front of the ComPair II box : Required settings in ComPair :

- start up the ComPair application.

- Select the correct database (open file “Q549.2E LA”, this will set the ComPair interface in the appropriate mode).

- Close ComPair

– Start up the program “BOARDTESTLOGGER” and select

“COMx”

– Put the USB stick into the TV and start up the TV while

pressing the “i+”-button on a Philips DVD RC6 remote control (it’s also possible to use a TV remote in “DVD”mode)

– On the PC the memory test is shown now. This is also

visible on the TV screen.

– In “BOARDTESTLOGGER” an option “Send extra UART

command” can be found where you can select “AUD1”. This command generates hear test tones of 200, 400, 1000, 2 000, 3 000, 5 000, 8 000 and 12 500Hz.

5.5 Error Codes

5.5.1 Introduction

The error code buffer contains all detected errors since the last time the buffer was erased. The buffer is written from left to right, new errors are logged at the left side, and all other errors shift one position to the right. When an error occurs, it is added to the list of errors, provided the list is not full. When an error occurs and the error buffer is full, then the new error is not added, and the error buffer stays intact (history is maintained). To prevent that an occasional error stays in the list forever, the error is removed from the list after more than 50 hrs. of operation. When multiple errors occur (errors occurred within a short time span), there is a high probability that there is some relation between them.

New in this chassis is the way errors can be displayed:

• There is a simple blinking LED procedure for board level repair (home repair) so called LAYER 1 errors next to the existing errors which are LAYER 2 errors (see Table 5-2 – LAYER 1 errors are one digit errors. – LAYER 2 errors are 2 digit errors.

• In protection mode. – From consumer mode: LAYER 1. – From SDM mode: LAYER 2.

• Fatal errors, if I2C bus is blocked and the set reboots,

CSM and SAM are not selectable.

– From consumer mode: LAYER 1. – From SDM mode: LAYER 2.

Important remark:

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Service Modes, Error Codes, and Fault Finding

For all errors detected by MIPS which are fatal => rebooting of the TV set (reboot starts after LAYER 1 error blinking), one should short the solder paths (SDM) at start-up from the power OFF state by mains interruption and not via the power button to trigger the SDM via the hardware pins.

• In CSM mode – When entering CSM: error LAYER 1 will be displayed

by blinking LED. Only the latest error is shown.

• In SDM mode – When SDM is entered via Remote Control code or the

hardware pins, LAYER 2 is displayed via blinking LED.

• In the ON state – In “Display error mode”, set with the RC commands

“mute_06250X _OK” LAYER 2 errors are displayed via blinking LED.

• Error display on screen. – In CSM no error codes are displayed on screen. – In SAM the complete error list is shown.

Basically there are three kinds of errors:

• Errors detected by the Stand-by software which lead to protection. These errors will always lead to protection and an automatic start of the blinking LED LAYER 1 error. (see section “5.6 The Blinking LED Procedure

• Errors detected by the Stand-by software which not lead to protection. In this case the front LED should blink the involved error. See also section “5.5 Error Codes

Error Buffer, Extra Info”. Note that it can take up several

minutes before the TV starts blinking the error (e.g. LAYER 1 error = 2, LAYER 2 error = 15 or 53).

• Errors detected by main software (MIPS). In this case the error will be logged into the error buffer and can be read out via ComPair, via blinking LED method LAYER 1-2 error, or in case picture is visible, via SAM.

”).

, 5.5.4

• Via polling on I/O pins going to the stand-by processor.

• Via sensing of analog values on the stand-by processor or the PNX8543.

• Via a “not acknowledge” of an I

Take notice that some errors need several minutes before they start blinking or before they will be logged. So in case of problems wait 2 minutes from start-up onwards, and then check if the front LED is blinking or if an error is logged.

C communication.

5.5.2 How to Read the Error Buffer

Use one of the following methods:

• On screen via the SAM (only when a picture is visible). E.g.: – 00 00 00 00 00: No errors detected – 23 00 00 00 00: Error code 23 is the last and only

detected error.

– 37 23 00 00 00: Error code 23 was first detected and

error code 37 is the last detected error.

– Note that no protection errors can be logged in the

error buffer.

• Via the blinking LED procedure. See section 5.5.3 How to

Clear the Error Buffer.

•Via ComPair.

5.5.3 How to Clear the Error Buffer

Use one of the following methods:

• By activation of the “RESET ERROR BUFFER” command in the SAM menu.

• With a normal RC, key in sequence “MUTE” followed by “062599” and “OK”.

• If the content of the error buffer has not changed for 50+ hours, it resets automatically.

5.5.4 Error Buffer

In case of non-intermittent faults, clear the error buffer before starting to repair (before clearing the buffer, write down the content, as this history can give significant information). This to ensure that old error codes are no longer present. If possible, check the entire contents of the error buffer. In some situations, an error code is only the result of another error code and not the actual cause (e.g. a fault in the protection detection circuitry can also lead to a protection). There are several mechanisms of error detection:

• Via error bits in the status registers of ICs.

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Service Modes, Error Codes, and Fault Finding

Table 5-2 Error code overview

EN 29Q549.2E LA 5.

Description Layer 1 Layer 2

C3 2 13 MIPS E BL / EB SSB SSB

C2 2 14 MIPS E BL / EB SSB/Display SSB/display

PNX doesn’t boot (HW cause)

2 15 Stby µP P BL PNX8543/PNX51XX

PNX 5100 doesn’t boot

Monitored

Error/

Error Buffer/

Prot

Blinking LED Device Defective Board

C blocked

SSB

12V 3 16 Stby µP P BL / Supply

Inverter or display supply 3 17 MIPS E EB /

1V2, 3V3, 5V to low 2 18 Stby µP P BL / SSB

Temp protection 3 12 MIPS E EB / Display

PNX 5100 2 21 MIPS E EB PNX5100 SSB

HDMI mux 2 23 MIPS E EB TDA9996 SSB

C switch 2 24 MIPS E EB PCA9540 SSB

Boot-NVM PNX5100 2 25 MIPS E EB STM24C08 SSB

Multi Standard demodulator (Micronas IF)

2 27 MIPS E EB DRX3616K

DRX3626K

SSB

ARM (ambilight) 8 28 MIPS E EB NXP LPC2103 AL module or DC/DC

FPGA (Local contrast) 2 29 MIPS E EB Altera SSB

Tuner 2 34 MIPS E EB UV1783S/HD1816 SSB

Fan I2C expander 7 41 MIPS E EB PCA9533 FAN module

T° sensor 7 42 MIPS E EB LM 75 T° sensor

FAN 1 7 43 MIPS E EB FAN

FAN 2 7 44 MIPS E EB FAN

Main NVM 2 / MIPS E X STM24C128 SSB

PNX doesn’t boot (SW cause) 2 53 Stby µP E BL PNX8543 SSB

Display (only 56PFL9954H) 5 64 MIPS E BL / EB Altera Display

Extra Info

• Rebooting. When a TV is constantly rebooting due to internal problems, most of the time no errors will be logged or blinked. This rebooting can be recognized via a ComPair interface and Hyperterminal (for Hyperterminal settings, see section “5.8 Fault Finding and Repair Tips

, 5.8.6

Logging). It’s shown that the loggings which are generated

by the main software keep continuing. In this case diagnose has to be done via ComPair.

• Error 13 (I

C bus 3 blocked). At the time of release of this manual, this error was not working as expected. Current situation: when this error occurs, the TV will constantly reboot due to the blocked bus. The best way for further diagnosis here, is to use ComPair.

• Error 15 (PNX8543,PNX5100 doesn’t boot). Indicates that the main processor/PNX5100 was not able to read his bootscript. This error will point to a hardware problem around the PNX8543 (supplies not OK, PNX 8543 completely dead, I Processor broken, etc...). When error 15 occurs it is also possible that I

C link between PNX and Stand-by

C1 bus is blocked (NVM). I2C1 can be indicated in the schematics as follows: SCL-UP-MIPS, SDA-UP-MIPS, SCL-1, SDA-1, SCL-2 or SDA-2. Other root causes for this error can be due to hardware problems from the NVM PNX5100, DDR’s and the bootscript reading from the PNX5100.

• Error 16 (12V). This voltage is made in the power supply and results in protection (LAYER 1 error = 3) in case of absence. When SDM is activated we see blinking LED LAYER 2 error = 16.

• Error 17 (Invertor or Display Supply). Here the status of the “Power OK” is checked by software, no protection will occur during failure of the invertor or display supply (no picture), only error logging. LED blinking of LAYER 1 error = 3 in CSM, in SDM this gives LAYER 2 error = 17.

• Error 18 (1V2-3V3-5V too low). All these supplies are generated by the DC/DC supply on the SSB. If one of these supplies is too low, protection occurs and blinking LED LAYER 1 error = 2 will be displayed automatically. In SDM this gives LAYER 2 error = 18.

• Error 21 (PNX 5100). When there is no I

C communication towards the PNX5100, the TV set will start rebooting and display LAYER 1 error = 2. Disconnect the mains cord now and start up the TV set with the solder path (SDM) short to ground during start-up to activate the LAYER 2 error blinking. Error “21” will be logged and displayed via the blinking LED procedure after a few moments from start-up. Remark : the rebooting can be recognized via a ComPair interface and Hyperterminal (for Hyperterminal settings, see section “5.8 Fault Finding and Repair Tips

, 5.8.6

Logging”). It is shown that the loggings which are

generated by the main software keep continuing. Check in the logging for keywords like e.g. “Device error 21”.

• Error 23 (HDMI). When there is no I

C communication towards the HDMI mux after start-up, LAYER 2 error = 23 will be logged and displayed via the blinking LED procedure if SDM is switched on. It should be noted that in case a new spare EDID MUX device is used for repair, the initial default address must be changed from “C0” to “CE”, to be done via ComPair.

• Error 24 (I communication towards the I

C switch). When there is no I2C

C switch, LAYER 2 error = 24 will be logged and displayed via the blinking LED procedure when SDM is switched on. Remark : this only works for TV sets with an I

C controlled screen included.

• Error 25 (Boot-NVM PNX5100). Same behaviour as described in “Error 21 (PNX5100)”.

• Error 27 (Micronas IF). When there is no I

C communication towards the multi standard demodulator, LAYER 2 error = 27 will be logged and displayed via the blinking LED procedure if SDM is switched on.

• Error 28 (ARM ambilight). When there is no I

C communication towards the ARM processor, LAYER 2 error = 28 will be logged and displayed via the blinking LED procedure if SDM is switched on.

• Error 29 (FPGA local contrast). When there is no I communication towards this FPGA, LAYER 2 error = 29 will be logged and displayed via the blinking LED procedure if SDM is activated.

• Error 34 (Tuner). When there is no I

C communication

towards the tuner after start-up, LAYER 2 error = 34 will be

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EN 30 Q549.2E LA5.

Service Modes, Error Codes, and Fault Finding

logged and displayed via the blinking LED procedure when SDM is switched on.

• Error 42 (Temp sensor). Only applicable for TV sets with

an I

C controlled screen.

• Main NVM. When there is no I

C communication towards the main NVM, LAYER 1 error = 2 will be displayed via the blinking LED procedure. In SDM, LAYER 2 error will be blinked as “15”. Errors here can not be logged due to inaccessibility of the NVM device.

• Error 53. This error will indicate that the PNX8543 has read his bootscript (when this would have failed, error 15 would blink) but initialization was never completed because of hardware problems (NAND flash, ...) or software initialization problems. Possible cause could be that there is no valid software loaded (try to upgrade to the latest main software version). Note that it can take a few minutes before the TV starts blinking LAYER 1 error = 2 or in SDM, LAYER 2 error = 53.

• Error 64. Only applicable for TV sets with an I screen .

5.6 The Blinking LED Procedure

5.6.1 Introduction

The blinking LED procedure can be split up into two situations:

• Blinking LED procedure LAYER 1 error. In this case the error is automatically blinked when the TV is put in CSM. This will be only one digit error, namely the one that is referring to the defective board (see table “5-2 Error code

overview”) which causes the failure of the TV. This

approach will especially be used for home repair and call centres. The aim here is to have service diagnosis from a distance.

• Blinking LED procedure LAYER 2 error. Via this procedure, the contents of the error buffer can be made visible via the front LED. In this case the error contains 2 digits (see table “5-2 Error code overview (hardware pins) is activated. This is especially useful for fault finding and gives more details regarding the failure of the defective board.

Important remark:

For all errors detected by MIPS which are fatal => rebooting of the TV set (reboot starts after LAYER 1 error blinking), one should short the solder paths at start-up from the power OFF state by mains interruption and not via the power button to trigger the SDM via the hardware pins.

When one of the blinking LED procedures is activated, the front LED will show (blink) the contents of the error buffer. Error codes greater then 10 are shown as follows:

1. “n” long blinks (where “n” = 1 to 9) indicating decimal digit

2. A pause of 1.5 s

3. “n” short blinks (where “n”= 1 to 9)

4. A pause of approximately 3 s,

5. When all the error codes are displayed, the sequence finishes with a LED blink of 3 s

6. The sequence starts again.

Example: Error 12 8 6 0 0. After activation of the SDM, the front LED will show:

1. One long blink of 750 ms (which is an indication of the decimal digit) followed by a pause of 1.5 s

2. Two short blinks of 250 ms followed by a pause of 3 s

3. Eight short blinks followed by a pause of 3 s

4. Six short blinks followed by a pause of 3 s

5. One long blink of 3 s to finish the sequence

6. The sequence starts again.

”) and will be displayed when SDM

C controlled

• Activate the CSM. The blinking front LED will show only the latest layer 1 error, this works in “normal operation” mode or automatically when the error/protection is monitored by the standby processor. In case no picture is shown and there is no LED blinking, read the logging to detect whether “error devices” are mentioned. (see section “5.8 Fault Finding and Repair

Tips, 5.8.6 Logging”).

• Activate the SDM. The blinking front LED will show the entire content of the LAYER 2 error buffer, this works in “normal operation” mode or when SDM (via hardware pins) is activated when the tv set is in protection.

Important remark:

• Transmit the commands “MUTE” - “062500” - “OK” with a normal RC. The complete error buffer is shown. Take notice that it takes some seconds before the blinking LED starts.

• Transmit the commands “MUTE” - “06250x” - “OK” with a normal RC (where “x” is a number between 1 and 5). When x = 1 the last detected error is shown, x = 2

the second last error, etc.... Take notice that it takes some

seconds before the blinking LED starts.

5.7 Protections

5.7.1 Software Protections

Most of the protections and errors use either the stand-by microprocessor or the MIPS controller as detection device. Since in these cases, checking of observers, polling of ADCs, and filtering of input values are all heavily software based, these protections are referred to as software protections. There are several types of software related protections, solving a variety of fault conditions:

• Protections related to supplies: check of the 12V, +5V, +3V3 and 1V2.

• Protections related to breakdown of the safety check mechanism. E.g. since the protection detections are done by means of software, failing of the software will have to initiate a protection mode since safety cannot be guaranteed any more.

Remark on the Supply Errors

The detection of a supply dip or supply loss during the normal playing of the set does not lead to a protection, but to a cold reboot of the set. If the supply is still missing after the reboot, the TV will go to protection.

Protections during Start-up

During TV start-up, some voltages and IC observers are actively monitored to be able to optimise the start-up speed, and to assure good operation of all components. If these monitors do not respond in a defined way, this indicates a malfunction of the system and leads to a protection. As the observers are only used during start-up, they are described in the start-up flow in detail (see section “5.3 Stepwise Start-up

5.7.2 Hardware Protections

The only real hardware protection in this chassis appears in case of an audio problem e.g. DC voltage on the speakers. This protection will only affect the Class D (7D10) and puts the amplifier in a continuous burst mode (cyclus approximately 2 seconds).

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5.6.2 How to Activate

Use one of the following methods:

2009-May-08

Repair Tip

• There will be still picture available but no sound. While the Class D amplifier tries to start-up again, the cone of the

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