Philips LC9.1A LA Schematic

Colour Television Chassis

18560_000_090401.eps

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LC9.1A

Contents Page Contents Page

1. Revision List 2

2. Technical Specifications and Connections 2

3. Precautions, Notes, and Abbreviation List 5

4. Mechanical Instructions 9

5. Service Modes, Error Codes, and Fault Finding 13

6. Alignments 27

7. Circuit Descriptions, Abbreviation List, and IC Data Sheets 31

8. IC Data Sheets 36

9. Block Diagrams Wiring Diagram 42" (Frame) 39 Wiring Diagram 47" (Frame) 40 Wiring Diagram 52" (Frame) 41 Block Diagram Video 42 Block Diagram Audio 43 Block Diagram Control & Clock Signals 44 Block Diagram I2C 45 Supply Lines Overview 46

10. Circuit Diagrams and PWB Layouts Diagram PWB Interface Ambilight: Interface + DC-DC Interface Ambilight: Dual DC-DC (AB2) 48 50 Interface Ambilight: Microcontroller (AB3) 49 50 6 LED Low-Pow: Microcontroller Liteon (AL1) 51 54 6 LED Low-Pow: Microcontroller Liteon (AL2) 52 54 6 LED Low-Pow: LED Liteon (AL3) 53 54 8 LED Low-Pow: Microcontroller Liteon (AL1) 55 59 8 LED Low-Pow: Microcontroller Liteon (AL2) 56 59 8 LED Low-Pow: LED Liteon (AL3) 57 59 8 LED Low-Pow: LED Drive Liteon (AL4) 58 59 12 LED Low-Pow: Microcontroller Liteon (AL1) 60 64 12 LED Low-Pow: Microcontroller Liteon (AL2) 61 64 12 LED Low-Pow: LED Liteon (AL3) 62 64 12 LED Low-Pow: LED Drive (AL4) 63 64

(AB1) 47 50

SSB: DC/DC (B01) 65 82-87 SSB: Tuner & Analog demodulator (B02A) 66 82-87 SSB: Class-D & Muting (B03) 67 82-87 SSB: MTK Power (B04A) 68 82-87 SSB: GDDR3 (B04B) 69 82-87 SSB: Flash & EJTAG (B04C) 70 82-87 SSB: Display interface - LVDS (B04D) 71 82-87 SSB: Ambilight (B04E) 72 82-87 SSB: HDMI & MUX (B05) 73 82-87 SSB: Digital I/O - Ethernet (provisional) (B06A) 74 82-87 SSB: Analog I/O - YPbPr (B06B) 75 82-87 SSB: Analog I/O - Cinch (B06C) 76 82-87 SSB: Side - A/V & USB (B06D) 77 82-87 SSB: VGA (B06E) 78 82-87 SSB: BDS iTV (B07) 79 82-87 SSB: SRP List Explanation 80 82-87 SSB: SRP List 81 82-87

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.

Published by ER/WS 0964 BU TV Consumer Care Printed in the Netherlands Subject to modification EN 3122 785 18490

2009-Apr-10

EN 2 LC9.1A LA1.

Revision List

1. Revision List

Manual xxxx xxx xxxx.0

• First release.

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:

42PFL9509/93

47PFL9509/93

52PFL9509/93

Frame 3122 785 18490

3122 785 18490

2.2 Directions for Use

You can download this information from the following websites:

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

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2.3 Connections

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Rear connectors

Side connectors

1 2 3 4

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Technical Specifications and Connections

EN 3LC9.1A LA 2.

Note: The following connector colour abbreviations are used

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

2.3.1 Side Connections

Cinch: Audio - In

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

Cinch: Video CVBS - In

Ye - Video CVBS 1 V

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

Head phone (Output)

Bk - Head phone 32 - 600 Ω / 10 mW ot

/ 10 kΩ jq

RMS

/ 10 kΩ jq

RMS

/ 75 Ω jq

/ 75 Ω j

Figure 2-1 Connection overview

USB2.0

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

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

Service Connector (UART)

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

Figure 2-2 USB (type A)

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Technical Specifications and Connections

2.3.2 Rear Connections

Aerial - In

- - IEC-type (EU) Coax, 75 Ω D

VGA: Video RGB - In

Figure 2-3 VGA Connector

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

/ 75 Ω 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 - 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

Mini Jack: Audio - In

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

/ 10 kΩ jo

RMS

/ 10 kΩ jo

RMS

CVI: 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 Ω jq

/ 10 kΩ jq

RMS

/ 10 kΩ jq

RMS

Cinch: Video CVBS - Out, Audio - Out

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

/ 75 ohm kq

/10 kohm kq

RMS

/ 10 kohm kq

RMS

Cinch: Video CVBS - In, Audio - In

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

/ 75 ohm jq

/ 10 kohm jq

RMS

/ 10 kohm jq

RMS

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

Figure 2-4 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 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

2.4 Chassis Overview

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

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Precautions, Notes, and Abbreviation List

3. Precautions, Notes, and Abbreviation List

EN 5LC9.1A LA 3.

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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MODEL :

PROD.NO:

32PF9968/10

MADE IN BELGIUM

220-240V 50/60Hz

128W

AG 1A0617 000001

VHF+S+H+UHF

BJ3.0E LA

Precautions, Notes, and Abbreviation List

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.

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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

Precautions, Notes, and Abbreviation List

EN 7LC9.1A 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 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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EN 8 LC9.1A LA3.

Precautions, Notes, and Abbreviation List

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 800x600 (4:3) SVHS Super Video Home System SW Software SWAN Spatial temporal Weighted Averaging

Noise reduction SXGA 1280x1024 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 1600x1200 (4:3) V V-sync to the module VESA Video Electronics Standards

Association VGA 640x480 (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 1280x768 (15:9) XTAL Quartz crystal XGA 1024x768 (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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4. Mechanical Instructions

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Index of this chapter:

4.1 Cable Dressing

4.2 Service Positions

4.3 Assy/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 9LC9.1A LA 4.

Figure 4-1 Cable dressing 42" (Frame styling)

Figure 4-2 Cable dressing 47" (Frame styling)

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42"

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

Figure 4-3 Cable dressing 52" (Frame styling)

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

The instructions apply to the Roadrunner styling - with AmbiLight.

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.

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 the set.

4.3.2 Speakers

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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.

Each speaker unit is mounted with two screws. When defective, replace the whole unit.

4.3.3 Ambi Light

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

4-5 for details.

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4.3.5 IR & LED Board / Stand Support

For removing the IR & LED board, the stand including support has to be removed When defective, replace the whole unit.

4.3.6 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. Unplug all connectors.

2. Remove the screws that secure the board.

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

4.3.7 Keyboard Control Panel

1. Remove the right AmbiLight unit.

2. Remove the connector on the IR/LED board.

3. Release the cable.

4. Release the clip on top of the unit and take the unit out. When defective, replace the whole unit.

4.3.8 LCD Panel

EN 11LC9.1A LA 4.

Figure 4-5 Ambi Light unit

1. Remove the Ambi Light cover [1].

2. Unplug the connector(s) [2].

3. Remove the subframe [3].

4. The PWB can now be taken from the subframe. When defective, replace the whole unit.

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.

Refer to Figure 4-6

for details.

1. Remove the AmbiLight units as earlier described.

2. Remove the Top Support.

3. Release the LVDS - and other connectors from the SSB.

4. Remove the subframe of the SSB with the SSB still mounted on it.

5. Release all connectors from the PSU.

6. Remove the subframe of the PSU with the PSU still mounted on it.

7. Remove the stand + stand support as earlier described.

8. Release the connectors [1] on the IR & LED Panel.

9. Remove the clips that secure the flare [2].

10. Remove the flare.

11. Now the LCD Panel can be lifted from the front cabinet.

Figure 4-6 LCD Panel - panel removal

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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 Figure

4-1, Figure 4-2 or Figure 4-3.

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

Mechanical Instructions

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Service Modes, Error Codes, and Fault Finding

PHILIPS

MODEL:

32PF9968/10

PROD.SERIAL NO:

AG 1A0620 000001

040

39mm

27mm

(CTN Sticker)

Display Option

Code

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5. Service Modes, Error Codes, and Fault Finding

EN 13LC9.1A LA 5.

Index of this chapter:

5.1 Test Points

5.2 Service Modes

5.3 Service Tools

5.4 Error Codes

5.5 The Blinking LED Procedure

5.6 Fault Finding and Repair Tips

5.7 Software Upgrading

5.1 Test Points

In the chassis schematics and layout overviews, the test points are mentioned. In the schematics, test points are indicated with “Fxxx” or “Ixxx”, in the layout overviews with a “half-moon” sign. As most signals are digital, it will be difficult to measure waveforms with a standard oscilloscope. 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

The Service Mode feature is split into four parts:

• Service Default Mode (SDM).

• Service Alignment Mode (SAM).

• Customer Service Mode (CSM).

• Computer Aided Repair Mode (ComPair).

SDM and SAM offer features, which can be used by the Service engineer to repair/align a TV set. Some features are:

• A pre-defined situation to ensure measurements can be

• Activates the blinking LED procedure for error identification

• The possibility to overrule software protections when SDM

• Make alignments (e.g. White Tone), (de)select options,

• Display information (“SDM” or “SAM” indication in upper

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.

ComPair Mode is used for communication between a computer and a TV on I2C /UART level and can be used by a Service engineer to quickly diagnose the TV set by reading out error codes, read and write in NVMs, communicate with ICs and the uP (PWM, registers, etc.), and by making use of a fault finding database. It will also be possible to up and download the software of the TV set via I2C with help of ComPair. To do this, ComPair has to be connected to the TV set via the ComPair connector, which will be accessible through the rear of the set (without removing the rear cover).

made under uniform conditions (SDM).

when no picture is available (SDM).

is entered via the Service pins.

enter options codes, reset the error buffer (SAM).

right corner of screen, error buffer, software version, operating hours, options and option codes, sub menus).

5.2.1 General

Some items are applicable to all Service Modes or are general. These are listed below.

Life Timer

During the life time cycle of the TV set, a timer is kept (called “Op. Hour”). It counts the normal operation hours (not the Stand-by hours). The actual value of the timer is displayed in SDM and SAM in a decimal value. Every two soft-resets increase the hour by +1. Standby hours are not counted.

Software Identification, Version, and Cluster

The software ID, version, and cluster will be shown in the main menu display of SDM, SAM, and CSM. The screen will show: “AAAABCD X.YY”, where:

• AAAA is the chassis name: LC91.

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

• C is the display indication: L= LCD, P= Plasma.

• D is the language/feature indication: 1= Standard, H= Full HD.

• 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 - 9 and A - Z. – 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.

• YY is the sub version number: this is updated with a minor change (backwards compatible with the previous versions) Numbering will go from 00 - 99. – If the sub version number changes, the new version

number is written in the NVM.

– If the NVM is fresh, the software identification, version,

and cluster will be written to NVM.

Display Option Code Selection

When after an SSB or display exchange, the display option code is not set properly, it will result in a TV with “no display”. Therefore, it is required to set this display option code after such a repair. To do so, press the following key sequence on a standard RC transmitter: “062598” directly followed by MENU and “xxx”, where “xxx” is a 3 digit decimal value of the panel type: see column “Display Code” in Table 6-5

, or see sticker on the side/

bottom of the cabinet. When the value is accepted and stored in NVM, the set will switch to Stand-by, to indicate that the process has been completed.

Figure 5-1 Location of Display Option Code sticker

During this algorithm, the NVM-content must be filtered, because several items in the NVM are TV-related and not SSBrelated (e.g. Model and Prod. S/N). Therefore, “Model” and “Prod. S/N” data is changed into “See Type Plate”. In case a call centre or consumer reads “See Type Plate” in CSM mode, he needs to look to the side/bottom sticker to identify the set, for further actions.

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5.2.2 Service Default Mode (SDM)

Purpose

Set the TV in SDM mode in order to be able to create a predefined setting for measurements to be made. In this platform, a simplified SDM is introduced (without protection override and without tuning to a frequency of 475.25 MHz).

Specifications

• Set linear video and audio settings to 50%, but volume to 25%. Stored user settings are not affected.

• All service-unfriendly modes (if present) are disabled, since they interfere with diagnosing/repairing a set. These service unfriendly modes are: – (Sleep) timer. – Blue mute/Wall paper. – Auto switch “off” (when there is no “ident” signal). – Hotel or hospital mode. – Child lock or parental lock (manual or via V-chip). – Skipping, blanking of “Not favourite”, “Skipped” or

“Locked” presets/channels.

– Automatic storing of Personal Preset or Last Status

settings.

– Automatic user menu time-out (menu switches back/

OFF automatically.

– Auto Volume levelling (AVL).

How to Activate

To activate SDM, use one of the following methods:

• Press the following key sequence on the remote control transmitter: “062596” directly followed by the MENU button (do not allow the display to time out between entries while keying the sequence).

• Short one of the “Service” jumpers on the TV board during cold start (see Figure 5-2 (remove the short after start-up). Caution: Activating SDM by shorting “Service” jumpers will override the DC speaker protection (error 1), the General I2C error (error 4), and the Trident video processor error (error 5). When doing this, the service-technician must know exactly what he is doing, as it could damage the television set.

). Then press the mains button

Service Modes, Error Codes, and Fault Finding

Figure 5-3 SDM menu

Menu explanation:

• HHHHH: Are the operating hours (in decimal).

• AAAABCD-X.YY: See paragraph Software Identification,

Version, and Cluster for the SW name definition.

• ERR: Shows all errors detected since the last time the buffer was erased in format <xxx> <xxx> <xxx> <xxx> <xxx> (five errors possible).

• OP: Used to read-out the option bytes. See “Options” in the Alignments section for a detailed description. Ten codes (in two rows) are possible.

How to Navigate

As this mode is read only, there is not much to navigate. To switch to other modes, use one of the following methods:

• Command MENU from the user remote will enter the normal user menu (brightness, contrast, colour, etc...) with “SDM” OSD remaining, and pressing MENU key again will return to the last status of SDM again.

• To prevent the OSD from interfering with measurements in SDM, command “OSD” or “i+” (“STATUS” or “INFO” for NAFTA and LATAM) from the user remote will toggle the OSD “on/off” with “SDM” OSD remaining always “on”.

• Press the following key sequence on the remote control transmitter: “062596” directly followed by the OSD/ STATUS/INFO/i+ button to switch to SAM (do not allow the display to time out between entries while keying the sequence).

Figure 5-2 Service jumper (SSB component side)

On Screen Menu

After activating SDM, the following screen is visible, with SDM in the upper right corner of the screen to indicate that the television is in Service Default Mode.

2009-Apr-10

How to Exit

Switch the set to STANDBY by pressing the mains button on the remote control transmitter or on the television set. If you switch the television set “off” by removing the mains (i.e., unplugging the television), the television set will remain in SDM when mains is re-applied, and the error buffer is not cleared. The error buffer will only be cleared when the “clear” command is used in the SAM menu.

Note:

• If the TV is switched “off” by a power interrupt while in SDM, the TV will show up in the last status of SDM menu as soon as the power is supplied again. The error buffer will not be cleared.

• In case the set is in Factory mode by accident (with “F” displayed on screen), by pressing and hold “VOL-“ and “CH-” together should leave Factory mode.

Service Modes, Error Codes, and Fault Finding

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EN 15LC9.1A LA 5.

5.2.3 Service Alignment Mode (SAM)

Purpose

• To change option settings.

• To display / clear the error code buffer.

• To perform alignments.

Specifications

• Operation hours counter (maximum five digits displayed).

• Software version, error codes, and option settings display.

• Error buffer clearing.

• Option settings.

• Software alignments (White Tone).

• NVM Editor.

• Set screen mode to full screen (all content is visible).

How to Activate

To activate SAM, use one of the following methods:

• Press the following key sequence on the remote control transmitter: “062596” directly followed by the OSD/ STATUS/INFO/i+ button (it depends on region which button is present on the RC). Do not allow the display to time out between entries while keying the sequence.

• Or via ComPair.

After entering SAM, the following screen is visible, with SAM in the upper right corner of the screen to indicate that the television is in Service Alignment Mode.

How to Navigate

• In the SAM menu, select menu items with the UP/DOWN keys on the remote control transmitter. The selected item will be indicated. When not all menu items fit on the screen, use the UP/DOWN keys to display the next / previous menu items.

• With the LEFT/RIGHT keys, it is possible to: – Activate the selected menu item. – Change the value of the selected menu item. – Activate the selected sub menu.

• When you press the MENU button twice while in top level SAM, the set will switch to the normal user menu (with the SAM mode still active in the background). To return to the SAM menu press the MENU button.

• The “OSD/STATUS/INFO/i+” key from the user remote will toggle the OSD “on/off” with “SAM” OSD remaining always “on”.

• Press the following key sequence on the remote control transmitter: “062596” directly followed by the MENU button to switch to SDM (do not allow the display to time out between entries while keying the sequence).

How to Store SAM Settings

To store the settings changed in SAM mode (except the OPTIONS and RGB ALIGN settings), leave the top level SAM menu by using the POWER button on the remote control transmitter or the television set. The mentioned exceptions must be stored separately via the STORE button.

Figure 5-4 SAM menu

Menu explanation:

1. System Information:

• Op. Hour. This represents the life timer. The timer counts normal operation hours, but does not count Stand-by hours.

• MAIN SW ID. See paragraph Software Identification, Version, and Cluster for the SW name definition.

• ERROR CODES. Shows all errors detected since the last time the buffer was erased. Five errors possible.

• OP1 / OP2. Used to read-out the option bytes. See paragraph 6.4 Option Settings in the Alignments section for a detailed description. Ten codes are possible.

2. Clear. Erases the contents of the error buffer. Select the CLEAR menu item and press the MENU RIGHT key. The content of the error buffer is cleared.

3. Options. To set the option bits. See paragraph 6.4 Option Settings

in the “Alignments” chapter for a detailed

description.

4. RGB Align. To align the White Tone. See White Tone Alignment:

for a detailed description.

5. NVM Editor. To change the NVM data in the television set. See also paragraph 5.6 Fault Finding and Repair Tips.

6. NVM Copy. Gives the possibility to copy/load the NVM file to/from an USB stick. NVM data copied to a USB memory device is named “NVM_COPY.BIN”. When copied back to a TV, the file first must have the same name.

How to Exit

Switch the set to STANDBY by pressing the mains button on the remote control transmitter or the television set.

Note:

• When the TV is switched “off” by a power interrupt while in SAM, the TV will show up in “normal operation mode” as soon as the power is supplied again. The error buffer will not be cleared.

• In case the set is in Factory mode by accident (with “F” displayed on screen), by pressing and hold “VOL-“ and “CH-” together should leave Factory mode.

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Service Modes, Error Codes, and Fault Finding

5.2.4 Customer Service Mode (CSM)

Purpose

The Customer Service Mode shows error codes and information on the TV’s operation settings. A call centre can instruct the customer (by telephone) to enter CSM in order to identify the status of the set. This helps them to diagnose problems and failures in the TV 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 Activate

To activate CSM, press the following key sequence on a standard remote control transmitter: “123654” (do not allow the display to time out between entries while keying the sequence).

Upon entering the Customer Service Mode, the following screen will appear:

Menu Explanation

1. Model Number. Type number, e.g. 42PFL9509/93. (*)

2. Production Serial Number. Product serial no., e.g. SV1A0908123456 (*). SV= Production centre, 1= BOM code, A= Service version change code, 09= Production year, 08= Production week, 123456= Serial number.

3. Software Version. Main software cluster and version is displayed.

4. Option Code 1. Option code information (group 1).

5. Option Code 2. Option code information (group 2).

6. PSU. Indication of the PSU factory ID (= 12nc).

7. SSB. Indication of the SSB factory ID (= 12nc). (*)

8. Display. Indication of the display ID (=12 nc). (*)

9. NVM Version. The NVM software version no.

10. PQ Version. PQ (picture quality) data version. This is a subset of the main SW.

11. Key (HDCP). Indicates if the HDMI keys (or HDCP keys) are valid or not.

12. Audio System. Gives information about the audio system of the selected transmitter.

13. Blank.

14. Video Format. Gives information about the video format of the selected transmitter (480p30/720p60/1080i50/1080i60, etc...). Is applicable to both HDMI and CVI sources.

15. Standby uP SW ID. Shows the Standby Processor software version.

16. Bootloader ID. Shows the Bootloader software ID.

17. Panel code. Gives the number of the panel as stored in NVM.

18. AP uP SW ID.Shows the AL uP software version.

(*) If an NVM IC is replaced or initialized, these items must be re-written to the NVM. ComPair will foresee in a possibility to do this.

Figure 5-5 CSM menu -1- (example)

Figure 5-6 CSM menu -2- (example)

How to Exit

To exit CSM, use one of the following methods:

• Press the MENU button twice on the remote control transmitter.

• Press the POWER button on the remote control transmitter.

• Press the POWER button on the television set.

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Service Modes, Error Codes, and Fault Finding

E_06532_036.eps

150208

UART SERVICE

CONNECTOR

UART SERVICE

CONNECTOR

TO I2C SERVICE CONNECTOR

TO TV

HDMI I2C only

Optional power

5V DC

ComPair II Developed by Philips Brugge

RC out

RC in

Optional

Switch

Power ModeLink/

Activity

ComPair II

Multi

function

RS232 /UART

EN 17LC9.1A LA 5.

5.3 Service Tools

5.3.1 ComPair

Introduction

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

1. ComPair helps you 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. You do not have to know anything about I2C or UART commands yourself, 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 (new) 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).

How to Connect

This is described in the ComPair chassis fault finding database.

5.4 Error Codes

5.4.1 Introduction

Error codes are required to indicate failures in the TV set. In principle a unique error code is available for every:

• Activated (SW) protection.

• Failing I

• General I

The last five errors, stored in the NVM, are shown in the Service menu’s. This is called the error buffer. The error code buffer contains all errors detected since the last time the buffer was erased. The buffer is written from left to right. When an error occurs that is not yet in the error code buffer, it is displayed at the left side and all other errors shift one position to the right. An error will be added to the buffer if this error differs from any error in the buffer. The last found error is displayed on the left. An error with a designated error code may never lead to a deadlock situation. This means that it must always be diagnosable (e.g. error buffer via OSD or blinking LED procedure, ComPair to read from the NVM). In case a failure identified by an error code automatically results in other error codes (cause and effect), only the error code of the MAIN failure is displayed.

Example: In case of a failure of the I2C bus (CAUSE), the error code for a “General I2C failure” and “Protection errors” is displayed. The error codes for the single devices (EFFECT) is not displayed. All error codes are stored in the same error buffer (TV’s NVM) except when the NVM itself is defective.

C device.

C error.

5.3.2 LVDS Tool

Figure 5-7 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.

• ComPair UART interface cable: 3138 188 75051.

• Program software can be downloaded from the Philips Service website.

Note: If you encounter any problems, contact your local support desk.

Support of the LVDS Tool has been discontinued.

5.4.2 How to Read the Error Buffer

You can read the error buffer in 3 ways:

• On screen via the SAM/SDM/CSM (if you have a picture). Example: – ERROR: 0 0 0 0 0 : No errors detected – ERROR: 6 0 0 0 0 : Error code 6 is the last and only

detected error

– ERROR: 9 6 0 0 0 : Error code 6 was detected first and

error code 9 is the last detected (newest) error

• Via the blinking LED procedure (when you have no picture). See paragraph 5.5 The Blinking LED Procedure.

•Via ComPair.

5.4.3 Error codes

The layer 1 error codes are pointing to the defective board. They are triggered by LED blinking when CSM is activated. In the LC09M platform, only two boards are present: the SSB and the PSU, meaning only two layer 1 errors are defined (or three in case an additional bolt-on module is added):

• 2: SSB

• 4: PSU

• 6: Bolt-on.

The following layer 2 errors have been assigned:

• 00: no error

• 11: DC protection of speakers, detected by MT539x

• 12: +12V protection error (or 12V failure), detected by standby processor during start-up

• 13: POK line error

• 14: General I on the same bus had no response

• 15: I

• 16: I tuner

• 17: I

C bus error when all the devices I2C devices

C error while communicating with the main EEPROM C error while communicating with the PLL/hybrid

C error while communicating with the HDMI Mux IC

ADV3002

• 18: IF demodulator TDA9886

• 19: Reserved

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EN 18 LC9.1A LA5.

Service Modes, Error Codes, and Fault Finding

• 21: Digital Bolt-on module communication error (where applicable).

5.4.4 How to Clear the Error Buffer

The error code buffer is cleared in the following cases:

• By using the CLEAR command in the SAM menu:

• If the contents of the error buffer have not changed for 50 hours, the error buffer resets automatically.

Note: If you exit SAM by disconnecting the mains from the television set, the error buffer is not reset.

5.5 The Blinking LED Procedure

5.5.1 Introduction

The software is capable of identifying different kinds of errors. Because it is possible that more than one error can occur over time, an error buffer is available, which is capable of storing the last five errors that occurred. This is useful if the OSD is not working properly.

Errors can also be displayed by the blinking LED procedure. The method is to repeatedly let the front LED pulse with as many pulses as the error code number, followed by a period of

1.5 seconds in which the LED is “off”. Then this sequence is

repeated.

Example (1): error code 4 will result in four times the sequence LED “on” for 0.25 seconds / LED “off” for 0.25 seconds. After this sequence, the LED will be “off” for 1.5 seconds. Any RC5 command terminates the sequence. Error code LED blinking is in red colour.

Example (2): the content of the error buffer is “129600” After entering SDM, the following occurs:

• 1 long blink of 5 seconds to start the sequence,

• 12 short blinks followed by a pause of 1.5 seconds,

• 9 short blinks followed by a pause of 1.5 seconds,

• 6 short blinks followed by a pause of 1.5 seconds,

• 1 long blink of 1.5 seconds to finish the sequence,

• The sequence starts again with 12 short blinks.

5.5.2 Displaying the Entire Error Buffer

Additionally, the entire error buffer is displayed when Service Mode “SDM” is entered. In case the TV set is in protection or Stand-by: The blinking LED procedure sequence (as in SDMmode in normal operation) must be triggered by the following RC sequence: “MUTE” “062500” “OK”. In order to avoid confusion with RC5 signal reception blinking, this blinking procedure is terminated when a RC5 command is received.

5.6 Fault Finding and Repair Tips

Notes:

• 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.

5.6.1 Software Protections

Most of the protections and errors use either the stand-by or the micro processor 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.

• 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 optimize 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.

5.6.2 Hardware Protections

The only real hardware protection in this chassis is (in case of an audio problem) the audio protection circuit that will trigger the uP to switch “off” the TV.

Repair Tip

• It is also possible that you have an audio DC protection because of an interruption in one or both speakers (the DC voltage that is still on the circuit cannot disappear through the speakers). Caution: (dis)connecting the speaker wires during the ON state of the TV at high volume can damage the audio amplifier.

5.6.3 NVM Editor

In some cases, it can be convenient if one directly can change the NVM contents. This can be done with the “NVM Editor” in SAM mode. With this option, single bytes can be changed.

2009-Apr-10

Caution:

• Do not change these, without understanding the function of each setting, because incorrect NVM settings may seriously hamper the correct functioning of the TV set!

• Always write down the existing NVM settings, before changing the settings. This will enable you to return to the original settings, if the new settings turn out to be incorrect.

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Table 5-1 NVM editor overview

Hex Dec Description

Address 0x000A 10 Existing value

Value 0x0000 0 New value

Store Store?

5.6.4 Load Default NVM Values

It is possible to download default values automatically into the NVM in case a blank NVM is placed or when the NVM first 20 address contents are “FF”. After the default values are downloaded, it is possible to start-up and to start aligning the TV set. To initiate a forced default download the following action has to be performed:

1. Switch “off” the TV set with the mains cord disconnected from the wall outlet (it does not matter if this is from “Standby” or “Off” situation).

2. Short-circuit the SDM jumpers on the SSB (keep short circuited).

3. Press “P+” or “CH+” on the local keyboard (and keep it pressed).

4. Reconnect the mains supply to the wall outlet.

5. Release the “P+” or “CH+” when the set is started up and has entered SDM.

When the downloading has completed successfully, the set should be into Stand-by, i.e. red LED on.

After replacing an EEPROM (or with a defective/no EEPROM), default settings should be used to enable the set to start-up and allow the Service Default Mode and Service Alignment Mode to be accessed.

5.6.5 Display option code

Caution: In case you have replaced the SSB, always check the

display option code in SAM, even if you have picture. With a wrong display option code it is possible that you have picture, but that in certain conditions you have unwanted side-effects.

5.6.6 Trouble Shooting Tuner section

When there is no picture in analog RF mode:

1. Check whether picture is present in AV mode. If not, tuner section is okay. Check video processing section.

2. Check if option settings are correct. Tuner profile in OP10: OPA7..OPA5=000 (China region), 010 (AP region).

3. Check if 5 V supply is available at test points F256, F228, F229 and F219, and if 33 V is available at test point F257.

4. Check if the I

C lines are working correctly (3.3 V).

5. Manually store a known channel and check if there is IF output at tuner pin 11. If not, tuner is faulty.

6. Feed in 105 dBuV at tuner pin 11 and check whether there is CVBS output from IF demodulator IC. If not, IF demodulator might be faulty. Check components in this area.

Alternative method:

It is also possible to upload the default values to the NVM with ComPair in case the SW is changed, the NVM is replaced with a new (empty) one, or when the NVM content is corrupted.

5.6.7 Trouble Shooting Sound section

Figure 5-8 Fault finding tree sound section

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EN 20 LC9.1A LA5.

No Video and Audio

for any HDMI input

(permanently)

Check TMDS signal at pin 1,

3, 4, 6, 7, 9, 10, 12 of

connector 1 (if HDMI 1)

Yes

Check TMDS signal at pin 37,38,41,42,44,45,47,48 of

ADV3002 (if HDMI 1)

Malfuntion of HDMI

connector, ensure

solderbility of Connector

Check TMDS signal at pin

25,26,28,29,31,32,34,35 of

ADV3002

Yes

Malfuntion of PCB trace,

ensure no broken trace of

these signals between

connector and ADV3002

Yes

The video and audio path is

intact, no video & audio is

cause by MTK 5392

malfunction

Malfuntion of ADV3002

No Video and Audio for any

HDMI input

(Intermittent and differ

within various DVD player)

Go to CSM mode using RC

key "123654",

check item 11: Key(HDCP)

Valid

Invalid

check item 19:

EDID Version / Check sum

As per latest?

Reload HDCP key

Check the following possible hardware failure:

1) Supply of EEPROM IC (pin 8 of 7B02). Should be +5V.

2) Connectivity of I2C between EEPROM (7B02) and ADV3002 (7B05). Between pin 5, 6 of 7B02 and pin 61 , 62 of 7B05. Should be +3.8V.

3) Connectivity of DDC line between HDMI connector and ADV3002. (ex: pin 15, 16 of connector HDMI 1 to pin 69 , 70 of ADV3002.)

4) Connectivity of DDC line between ADV3002 and MTK5392. (pin 67, 68 of ADV3002 to test point F836 & F837)

Update EDID

Yes

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5.6.8 Trouble Shooting HDMI section

Service Modes, Error Codes, and Fault Finding

2009-Apr-10

Figure 5-9 Fault finding tree HDMI section

Service Modes, Error Codes, and Fault Finding

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EN 21LC9.1A LA 5.

5.6.9 Start-up/Shut-down Flowcharts

On the next pages you will find start-up and shut-down flowcharts, which might be helpful during fault finding.

POWER STATES

In this chassis, there are six possible power states as follows:

• Power OFF

• Power ON

• STANDBY

• SEMI-STANDBY

• Special Panel Mode

• PROTECTION

Figure 5-10 Power States

POWER OFF

In “Power OFF” mode, the system is completely switched “off” from AC mains. When AC power is applied, the system checks for last status. Depending on the last standby status stored in the system EEPROM, this mode can then transit to “ON” or “STANDBY” mode.

This is the normal operating mode, indicated by the “on” LED. All the power supply lines are available and depending on the sub-mode, all the circuits in the system may be active. From this mode it shall be possible to transit to “STANDBY” and “PROTECTION” mode, or to “Power OFF” mode if AC mains are switched “off”. The sub-modes are:

• Active Mode (Normal Consumer Mode)

• Service Modes

• Panel Modes

• Factory Modes

SPECIAL PANEL MODE

The Special Panel Mode is only used during manufacturing process to program the system EEPROM. In this mode, the SDA0 and SCL0 ports of MT5392 are set to high impedance after SDM and PANEL pins are both detected as “low” during start-up. This mode can be exited using a power recycle.

PROTECTION

This state is entered when an error has been detected at startup or in the “ACTIVE” mode. All switched power supply lines are turned “off” with only +3V3stby remaining “on”; similar to “STANDBY” mode. This state is indicated by the blinking red front LED with the blinking sequence denoting the type of error detected. When the system enters the protection mode due to a critical error, it should be turned “off” and the failure cause needs to be resolved. The system will function normally again after performing a power recycling once all protection causing failures have been resolved.

START-UP SEQUENCE

There are two cases of start-up sequences, namely:

• AC On and

• Standby Wake-up.

AC ON

In the case of start-up from AC mains, all PSU voltages start to turn “on” as the hardware default of the active “low” STANDBY (controlled by Standby Controller STANDBY signal) signal to the PSU is pulled “low” with respect to ground. The MT5392 starts running boot loader once the hardware reset circuit is released. The system will then check the last standby status from the system EEPROM to determine whether to complete the system start-up (load image, turn on the audio, display etc) or proceed to standby and wait for wakeup command from user. The Standby Controller then proceeds to verify the power status of the +12V and sends the system to protection in case of any failures. Special Panel, SDM, and PANEL modes are detected as well.

STANDBY WAKEUP

When the system receives a command to wake-up from standby, the Standby Controller sets the STANDBY signal “low” to turn “on” the switched power, and similarly detects for the presence of +12V. The MT5392 waits for +3V3_SW to be available before loading its image. The significance of this voltage detection is due to the flash is also being powered by the same mentioned voltage. The following figure shows the start-up flowchart for both “AC On” and “Standby Wake-up”:

STANDBY

The total power consumption of the system in this mode shall be equal or less than 150 mW. This state is indicated by white LED when AC mains is switched “on”. Only the standby controller is operational in this state, where only +3V3stby power supply is available. From this mode it shall be possible to transit to the “ACTIVE” or “Power OFF” mode if AC mains are switched “off”.

SEMI-STANDBY

The semi-standby state is required to perform the following tasks:

• AmbiLight wakeup control

• PBS SemiStandby.

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EN 22 LC9.1A LA5.

START

HW Default PSU is ON, and

MT5392 POR

MT5392 POR and config

DRAM decompress

bootloader into DRAM

(preLoader)

MT5392 Bootloader

decompressed and running

from DRAM

Special Panel mode

Detection

SDM

& PANEL =

LOW?

All IIC Port set to High

Impedance

Yes

END

Check T8032 Status

T8032 in reset State?

(Cold Boot?)

Yes

Download T8032 Code

And kick uP to start to run.

Check T8032/ARM

communication ready?

1. Version cmd ok.

2. Setup CEC parameters.

T8032/ARM

Communicate ok?

Communicate

Failed Count <= 3

Communicate

Failed Count > 3

Error #, failed into Protection mode, Record error in NVM.

Yes

Cold Start?

Yes

Check Last Status and Boot

Ctrl Bits from NVM

Enter Standby?

Yes

Setup Wakeup Scenarios on

PDWNC module of 5392

Standby

(HW)

NVM Error

[ Protection ]

Enable T8032 receive IR key

5392 checks

POWER_DOWN =

HIGH ?

Wakeup

Events

(RC/LKB/CEC/Ambilight)

Wait 100ms

12V Error

[ Protection ]

To Reboot

SDM and PANEL Mode Detection

1. Check SDM Port and Set SDM Mode Flag If SDM Pin = LOW and System EEPROM Firs t 20 bytes = 0xFF or CH+ on LKB pressed, Load Software Default System EEPRO M Data (only when cold start)

2. Check Panel Port If Panel Pin = LoW, Set Panel Mode Flag

Enable POWER_DOWN INT

Enable DC_PROT INT

MT5392 begins initializing the

System

Initialize Tuner

Initialize HDMI Switch

Initialize Middleware Layer

Initialize Philips

drivers/Application

Initialize Application Layer

Switch RC/OPCTRL control from T8032 to MT5392 and

Enable RC Key

Switch to Video Path

Blank Picture and Switch to Last

Source

Picture Mode Setup & Detecti on

UnBlank Picture and UnMute

Audio MUTEn = HIGH

SW_MUTE = HIGH

Set Last Status = ON

Start PWM_DIMMING and

BACKLIGHT_BOOST Note: Startup time from image decompression long enough to

satisfy 1sec high time after LAMP ON for proper panel

startup

Initialize CEC driver

Check T8032 CEC buffer

T8032 with

CEC data

Copy CEC data from T8032 to

MT5392 CEC driver buffer

Switch CEC h/w control from

T8032 to MT5392

Initialize NVM

Yes

NVM Error

[ Protection ]

Tuner

HDMI Switch

Watchdog timeout

Reboot

Panel turn on Sequence

Turn on LED1

Retrieve/Display Startup

Logo

PWM_DIMMING keep at 100%

BACKLIGHT_BOOST at

nominal

Turn on LVDS Power

LCD_PWR_ON = LOW

Retrieve Panel ID from NVM

Retrieve Panel Info from Flash

data

Wait for Panel_On_Time_1

based on Panel ID in ms (from

Panel Info on Flash)

Switch on LVDS Signal

Wait for Panel_On_Time_2

based on Panel ID in ms (from

Panel Info on Flash)

BACKLIGHT_ON_OFF = HIGH

MT5392 Decompress Image

from Flash into DRAM

Successful?

Set Program Counter to

DRAM Image to boot into

TV Image

Yes

Notify T8032 that

MT5392 start up is OK

T8032 reset state

T8032

T8032 booting

T8032 main loop

T8032 main loop in standby

mode

Control PDWNC

module to

wakeup ARM11

Send error code info to

T8032 & CEC on/off status

Receive ARM info

(Error code etc)

Wakeup event

If not watchdog reboot,

Enable 20 seconds watchdog

Check Wakeup Reason from

PDWNC module (IR/Keypad

HW and CEC) and confirm

from T8032

Any of Upgrade

bits at NVM is on?

USB Upgrade

Upgrade

Failed

Upgrade success

AP: TV Navigator

Is it Ambilight wakeup?

Yes

1. If Boot Ctrl Bits to set always enter standby, then go to standby directly.

2. If Boot Ctrl Bits to set always boot directly, then continue booting.

3. If Boot Ctrl Bits to follow Last Status, then check the Last status go decide to

enter standby or continue booting.

Drop All RC key received before

this block

NVM Error

[ Protecti

on ]

AP: Reload UI param eter into

program

Timeout

= 6 Sec ?

yes

2.568 second

3.774 second

Turn off Philips

logo

Video Ready

Initialize OSD

3.776 second

Enable 5392 Self-Watchdog thread

Thread action:

1. If watchdog reboot, delay 500 seconds to work.

2. Enable Self-watc hdog and initial 15 seconds counter

3. Refresh watchdog counter / 0.5 sec

4. Alive check T8032 / 15 seconds

Check Boot Bank Flag in

EEPROM

Calculate Boot Bank addr ess

Is it Ambilight wakeup?

Panel Initialization

Yes

Semi-Standby

Received wakeup event

Power on

Is it Ambilight

wakeup ?

Audio MUTEn = LOW

SW_MUTE = LOW

AP: Background Manager

Yes

DTV_IRQ = Low

Yes

DTV_IRQ = High

Wait 100ms

Standby

(HW)

Ambilight off

Check

PowerDown

Start up OK

Yes

Blinking LED No

NVM status to

check Upgrade bit

Yes

Standby

(HW)

BACKLIGHT_ON_OFF = HIGH

Panel Initialization

ON Mode

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Service Modes, Error Codes, and Fault Finding

Figure 5-11 Start-up flowchart

2009-Apr-10

Service Modes, Error Codes, and Fault Finding

RISC START

Disable AP RC/LKB key

Stop Backlight Dimming

PWM_DIMMING = 100%

Turn Off Backlight

BACKLIGHT_ON_OFF = LOW

Switch off LVDS Signal

Wait for Panel_Off_Time_3

based on Panel ID in ms (from

Panel Flash)

Turn Off LVDS Power,

LCD_PWR_ON = HIGH

PWM_Dimming = 0%

Disable DC_PROT &

POWER_DOWN INT

Pass Error Buffer and CEC Info

to T8032

Switch IR/GPIO control from

RISC to T8032

Mute Audio, MUTEn = HIGH

Notify T8032 to go to Standby

END

(STANDBY)

Wait 3000ms to block next

startup to ensure PSU properly

dischaged

T8032 blinks LED2 according to

Error Buffer

STANDBY due

to Protection?

Yes

Receive Standby Command

T8032 START

Turn off LED1

Set Last Status = STANDBY

Wait for Panel_Off_Time_2

based on Panel ID in ms (from

Panel Flash)

PBS Semistandby Yes

Turn off LED

Switch off backlight

SemiStandby

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EN 23LC9.1A LA 5.

STANDBY SEQUENCE

The following flowchart depicts the Standby (plus SemiStandby condition) sequence:

Figure 5-12 Standby flowchart

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EN 24 LC9.1A LA5.

START

Note: To Avoid False Tr ig g e ri n g

Log Error Code

Mute Audio Output

Go to STANDBY

Check

DC_PROT = LOW

for 3 sec?

Ye s

END

DC Protection

[Protection]

H_17740_037.eps

240108

POWERDOWN SEQUENCE

The following figure shows the power-down sequence flowchart:

START

Service Modes, Error Codes, and Fault Finding

POWER_DOWN INT

based on falling

edge trigger

Wait for

impending

Power Off

MT5392 Detects

POWER_DOWN INT

Reconfirm

POWER_DOWN

= LOW?

Ye s

Mute Audio Output

Write Protect Flash and

System EEPROM

System Idle

END

Note: To

Avoid False Triggering

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Figure 5-13 Power-down flowchart

The power-down condition is detected by the MT5392 POWER_DOWN signal which is an interrupt pin. A “low” level on this line signifies that power-down is detected. The two major activities that occur over this operation is the muting of audio output and write protecting the system flash and EEPROM.

DC PROTECTION

The following figure shows the DC_PROT interrupt flowchart:

Figure 5-14 DC Protection flowchart

5.6.10 SSB replacement

Follow the instructions in the flowchart in case a SSB has to be swapped.

2009-Apr-10

Service Modes, Error Codes, and Fault Finding

START

Go to SAM mode and save the TV settings

via “NVM Copy to USB”.

Set is still

operating?

- Replace SSB board by a Service SSB.

- Make the SS B fit mechanically to the set.

Go to SAM mode, and reload settings

via “NVM Copy from USB”.

Saved settings on USB stick?

Progra m “Display Option” code via 062598 MENU, followed by 3 digits code (this code

can be found on the side sticker of the set or

service manual).

Check and perform alignments in SAM

accordin g to the Service Manual.

E.g. option codes, colour temperature...

Connect PC via ComPair interface to Service

connector at side-AV.

END

Yes

After entering “Display Option” code, set is

going to Standby (= validation of code).

Restart the set.

- Verify “Option Codes” a ccording to back sticker of set or service manual.

- Default settings for W hite drive see Table 6-1

Set is starting up & display is OK.

If not already done;

Check latest software on S ervice website.

Update all relevant software via USB.

Set is starting up normally but no

display.

Final ch eck of all menu s in CSM .

Special a ttentio n to “Mo del no. serial no.,

panel code & HDCP keys status”.

Program “Model no.”, “Serial no.”, “IPB/PSU

12NC” and “Display 12NC”.

Launch ComPair with correct FF database

Top right corner disp layed “F” or “cF”

Press 5 s. the “Vol -” & “CH -“ button on the local keyboard until the OSD “F” or “cF” dissappeared.

Unplug the mainscord to verify the correct

disablin g of the factory-mode.

Set is starting up in “Factory” mode.

Start-up set.

Set behaviour?

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EN 25LC9.1A LA 5.

Figure 5-15 SSB replacement flowchart

2009-Apr-10

EN 26 LC9.1A LA5.

5.7 Software Upgrading

5.7.1 Introduction

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, without the need of an E-JTAG debugger. A description on how to upgrade the main software can be found in the DFU or on the Philips website.

5.7.2 Main Software Upgrade

Automatic Software Upgrade

In “normal” conditions, so when there is no major problem with the TV, the main software and the default software upgrade application can be upgraded with the “autorun.upg” (FUS part in the one-zip file). This can also be done by the consumers themselves, but they will have to get their software from the commercial Philips website or via the Software Update Assistant in the user menu (see DFU). The “autorun.upg” file must be placed in the root of your USB stick.

How to upgrade:

1. Copy “autorun.upg” to the root of your USB stick.

2. Insert USB stick in the side I/O while the set is in “On” mode. The set will prompt for software upgrade acknowledge, after which the upgrading will start automatically. As soon as the programming is finished, you have to give a “restart” command, after which the set will restart. In the “Setup” menu you can check if the latest software is running.

Service Modes, Error Codes, and Fault Finding

5.7.3 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.

• Ambi_clustername_version.zip. Not to be used by Service technicians.

• Panel_clustername_version.zip. Not to be used by Service technicians.

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

• FUS_clustername_version.zip. Contains the “autorun.upg” 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.

5.7.4 How to Copy NVM Data to/from USB

Write NVM data to USB

1. Insert the USB stick into the USB slot while in SAM mode.

2. Execute the command "NVM Copy" > "NVM Copy to USB", to copy the NVM data to the USB stick. The NVM filename on the USB stick will be named "NVM_COPY.BIN" (this takes a couple of seconds).

Write NVM data to TV

1. First, ensure (via a PC) that the filename on the USB stick has the correct format: "NVM_COPY.BIN".

2. Insert the USB stick into the USB slot while in SAM mode.

3. Execute the command "NVM Copy" > "NVM Copy from USB" to copy the USB data to NVM (this takes about a minute to complete).

Important: The file must be located in the root directory of the USB stick.

2009-Apr-10

+ 60 hidden pages