Philips Q548.1E Schematic

0 (0)

Published by ER/TY 0964 BU TV Consumer Care, the Netherlands Subject to modification EN 3122 785 18560

2009-Apr-03

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

photocopying, or otherwise without the prior permission of Philips.

Colour Television Chassis

Q548.1E

18560_000_090401.eps

090401

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 16

6. Alignments 34

7. Circuit Descriptions 39

8. IC Data Sheets 49

9. Block Diagrams

Wiring Diagram 32" (Frame) 57

Wiring Diagram 37" (Roadrunner) 58

Wiring Diagram 42" (Frame/Roadrunner) 59

Wiring Diagram 47" (Frame) 60

Wiring Diagram 47" (Roadrunner) 61

Wiring Diagram 52" (Frame) 62

Block Diagram Video 63

Block Diagram Audio 64

Block Diagram Control & Clock Signals 65

Block Diagram I2C 66

Supply Lines Overview 67

10. Circuit Diagrams and PWB Layouts Drawing PWB

Interface Ambilight: Interface + Single DC-DC

68 71

Interface Ambilight: Dual DC-DC 69 71

Interface Ambilight: Microcontrollerblock 70 71

6 LED Low-Pow: Microcontroller Block Liteon 72 75

6 LED Low-Pow: Microcontroller Block Liteon 73 75

6 LED Low-Pow: LED Liteon 74 75

8 LED Low-Pow: Microcontroller Block Liteon 76 80

8 LED Low-Pow: Microcontroller Block Liteon 77 80

8 LED Low-Pow: LED Liteon 78 80

8 LED Low-Pow: LED Drive Liteon 79 80

10 LED Low-Pow: Microcontroller Block Liteon 81 85

10 LED Low-Pow: Microcontroller Block Liteon 82 85

10 LED Low-Pow: LED Liteon 83 85

10 LED Low-Pow: LED Drive Liteon 84 85

12 LED Low-Pow: Microcontroller Block Liteon 86 90

12 LED Low-Pow: Microcontroller Block Liteon 87 90

12 LED Low-Pow: LED Liteon 88 90

12 LED Low-Pow: LED Drive 89 90

SSB: DC/DC +3V3 +1V2 91 119

SSB: DC/DC +3V3 +1V2 Standby 92 119

SSB: Front End 93 119

SSB: PNX8543 - Power 94 119

SSB: PNX8543 - Video Streams/LVDS Output 95 119

SSB: PNX8543 Audio Amplifier 96 119

SSB: PNX8543 Audio 97 119

SSB: PNX8543 Analog AV 98 119

SSB: PNX8543 SDRAM 99 119

SSB: PNX8543 Control MIPS/Flash/PCI 100 119

SSB: PNX8543 Standby Control/Debug 101 119

SSB: Bolt-on 102 119

SSB: Analog IO - Scart 1 & 2 103 119

SSB: YPbPr / Side I/O / S-video 104 119

SSB: HDMI 105 119

SSB: Ethernet 106 119

SSB: PCMCIA 107 119

SSB: Class-D 108 119

SSB: Display Interface (Common) 109 119

SSB: Display Supply 110 119

SSB: PNX5100 - Power 111 119

SSB: PNX5100 - SDRAM 112 119

SSB: PNX5100 - Control / PCI / Debug 113 119

SSB: PNX5100 - LVDS In/Out 114 119

SSB: PNX5100 - AmbiLight 115 119

SSB: SRP List Explanation 116

SSB: SRP List Part 1 117

SSB: SRP List Part 2 118

www.dtforum.net

Revision List

EN 2 Q548.1E LA1.

2009-Apr-03

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

2.2 Directions for Use

You can download this information from the following websites:

http://www.philips.com/support

http://www.p4c.philips.com

CTN Styling Published in:

32PFL7404H/12

Frame 3122 785 18560

42PFL7404H/12

3122 785 18560

47PFL7404H/12

3122 785 18560

52PFL7404H/12

3122 785 18560

32PFL8404H/12

Roadrunner 3122 785 18560

37PFL8404H/12

3122 785 18560

42PFL8404H/12

3122 785 18560

47PFL8404H/12

3122 785 18560

Technical Specifications and Connections

EN 3Q548.1E LA 2.

2009-Apr-03

2.3 Connections

Figure 2-1 Connection overview

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

1 - Cinch: Audio - In

Rd - Audio R 0.5 V

RMS

/ 10 kΩ jq

Wh - Audio L 0.5 V

RMS

/ 10 kΩ jq

2 - Cinch: Video CVBS - In

Ye - Video CVBS 1 V

/ 75 Ω jq

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

1 - Ground Y Gnd H

2 - Ground C Gnd H

3 - Video Y 1 V

/ 75 Ω j

4 - Video C 0.3 V

/ 75 Ω j

4 - Head phone (Output)

Bk - Head phone 32 - 600 Ω / 10 mW ot

5 - Common Interface

68p - See diagram B05C SSB: PCMCIA

18440_001_090217.eps

090217

Back connectors

EXT 2

(RGB/CVBS)

EXT 1

(RGB/CVBS)

SPDIF

OUT

AUDIO

VGA

TV ANTENNA

HDMI 3

AUDIO IN:

LEFT / RIGHT

HDMI 1 / DVI

HDMI 2 / DVI

HDMI 3 / DVI

VGA

EXT 3

10 9

15 16

HDMI 2 HDMI 1

OUT

26-52”

19-22”

Side connectors

Technical Specifications and Connections

EN 4 Q548.1E LA2.

2009-Apr-03

6 - USB2.0

Figure 2-2 USB (type A)

1-+5V k

2 - Data (-) jk

3 - Data (+) jk

4 - Ground Gnd H

7 - HDMI: Digital Video, Digital Audio - In

(see connector 15)

8 - Service Connector (UART)

1 - Ground Gnd H

2 - UART_TX Transmit k

3 - UART_RX Receive j

2.3.2 Rear Connections

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

Figure 2-3 SCART connector

1 - Audio R 0.5 V

RMS

/ 1 kΩ k

2 - Audio R 0.5 V

RMS

/ 10 kΩ j

3 - Audio L 0.5 V

RMS

/ 1 kΩ k

4 - Ground Audio Gnd H

5 - Ground Blue Gnd H

6 - Audio L 0.5 V

RMS

/ 10 kΩ j

7 - Video Blue 0.7 V

/ 75 Ω jk

8 - Function Select 0 - 2 V: INT

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

/ 75 Ω j

12 - n.c.

13 - Ground Red Gnd H

14 - Ground P50 Gnd H

15 - Video Red 0.7 V

/ 75 Ω j

16 - Status/FBL 0 - 0.4 V: INT

1 - 3 V: EXT / 75 Ω j

17 - Ground Video Gnd H

18 - Ground FBL Gnd H

19 - Video CVBS/Y 1 V

/ 75 Ω k

20 - Video CVBS 1 V

/ 75 Ω j

21 - Shield Gnd H

10 - Cinch: S/PDIF - Out

Bk - Coaxial 0.4 - 0.6V

/ 75 Ω kq

11 - Cinch: Audio - Out

Rd - Audio - R 0.5 V

RMS

/ 10 kΩ kq

Wh - Audio - L 0.5 V

RMS

/ 10 kΩ kq

12 - VGA: Video RGB - In

Figure 2-4 VGA Connector

1 - Video Red 0.7 V

/ 75 Ω j

2 - Video Green 0.7 V

/ 75 Ω j

3 - Video Blue 0.7 V

/ 75 Ω j

4-n.c.

5 - Ground Gnd H

6 - Ground Red Gnd H

7 - Ground Green Gnd H

8 - Ground Blue Gnd H

9-+5V

+5 V j

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

13 - Mini Jack: Audio - In

Wh - Audio L 0.5 V

RMS

/ 10 kΩ jo

Rd - Audio R 0.5 V

RMS

/ 10 kΩ jo

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

Gn - Video Y 1 V

/ 75 Ω jq

Bu - Video Pb 0.7 V

/ 75 Ω jq

Rd - Video Pr 0.7 V

/ 75 Ω jq

Rd - Audio - R 0.5 V

RMS

/ 10 kΩ jq

Wh - Audio - L 0.5 V

RMS

/ 10 kΩ jq

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

Figure 2-5 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

16 - Aerial - In

- - IEC-type (EU) Coax, 75 Ω D

2.4 Chassis Overview

Refer to chapter Block Diagrams for PWB/CBA locations.

1 2 3 4

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18 2

E_06532_017.eps

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Precautions, Notes, and Abbreviation List

EN 5Q548.1E LA 3.

2009-Apr-03

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.

3.2 Warnings

• All ICs and many other semiconductors are susceptible to

electrostatic discharges (ESD w). Careless handling

during repair can reduce life drastically. Make sure that,

during repair, you are connected with the same potential as

the mass of the set by a wristband with resistance. Keep

components and tools also at this same potential.

• Be careful during measurements in the high voltage

section.

• Never replace modules or other components while the unit

is switched “on”.

• When you align the set, use plastic rather than metal tools.

This will prevent any short circuits and the danger of a

circuit becoming unstable.

3.3 Notes

3.3.1 General

• Measure the voltages and waveforms with regard to the

chassis (= tuner) ground (H), or hot ground (I), depending

on the tested area of circuitry. The voltages and waveforms

shown in the diagrams are indicative. Measure them in the

Service Default Mode with a colour bar signal and stereo

sound (L: 3 kHz, R: 1 kHz unless stated otherwise) and

picture carrier at 475.25 MHz for PAL, or 61.25 MHz for

NTSC (channel 3).

• Where necessary, measure the waveforms and voltages

with (D) and without (E) aerial signal. Measure the

voltages in the power supply section both in normal

operation (G) and in stand-by (F). These values are

indicated by means of the appropriate symbols.

3.3.2 Schematic Notes

• All resistor values are in ohms, and the value multiplier is

often used to indicate the decimal point location (e.g. 2K2

indicates 2.2 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

-6

nano-farads (n =× 10

-9

), or pico-farads (p =× 10

-12

• 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

. Select

“Magazine”, then go to “Repair downloads”. Here you will find

Information on how to deal with BGA-ICs.

BGA Temperature Profiles

For BGA-ICs, you must use the correct temperature-profile.

Where applicable and available, this profile is added to the IC

Data Sheet information section in this manual.

3.3.5 Lead-free Soldering

Due to lead-free technology some rules have to be respected

by the workshop during a repair:

• Use only lead-free soldering tin. If lead-free solder paste is

required, please contact the manufacturer of your soldering

equipment. In general, use of solder paste within

workshops should be avoided because paste is not easy to

store and to handle.

• Use only adequate solder tools applicable for lead-free

soldering tin. The solder tool must be able:

– To reach a solder-tip temperature of at least 400°C.

– To stabilize the adjusted temperature at the solder-tip.

– To exchange solder-tips for different applications.

• Adjust your solder tool so that a temperature of around

360°C - 380°C is reached and stabilized at the solder joint.

Heating time of the solder-joint should not exceed ~ 4 sec.

Avoid temperatures above 400°C, otherwise wear-out of

tips will increase drastically and flux-fluid will be destroyed.

To avoid wear-out of tips, switch “off” unused equipment or

reduce heat.

• Mix of lead-free soldering tin/parts with leaded soldering

tin/parts is possible but PHILIPS recommends strongly to

avoid mixed regimes. If this cannot be avoided, carefully

clear the solder-joint from old tin and re-solder with new tin.

Precautions, Notes, and Abbreviation List

EN 6 Q548.1E LA3.

2009-Apr-03

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

10000_024_090121.eps

090121

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

EN 7Q548.1E LA 3.

2009-Apr-03

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

carrier distance is 6.0 MHz

C Inter IC bus

D Inter IC Data bus

S Inter IC Sound bus

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”)

Precautions, Notes, and Abbreviation List

EN 8 Q548.1E LA3.

2009-Apr-03

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

C bus

SD Standard Definition

SDA Serial Data I

SDA-F DAta Signal on Fast I

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

Index of this chapter:

4.1

Cable Dressing

4.2 Service Positions

4.3 Assy/Panel Removal

4.4 Set Re-assembly

Notes:

• Figures below can deviate slightly from the actual situation,

due to the different set executions.

4.1 Cable Dressing

Figure 4-1 Cable dressing 32PFL7404H/12

Figure 4-2 Cable dressing 42PFL7404H/12

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Figure 4-3 Cable dressing 47PFL7404H/12

Figure 4-4 Cable dressing 52PFL7404H/12

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Figure 4-5 Cable dressing 32PFL8404H/12

Figure 4-6 Cable dressing 37PFL8404H/12

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Figure 4-7 Cable dressing 42PFL8404H/12

Figure 4-8 Cable dressing 47PFL8404H/12

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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 4-9 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 Figure 4-9

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

The instructions apply to the 8000 series (Roadrunner - 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

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 4-10

for details.

Figure 4-10 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.

4.3.5 IR & LED Board / Stand Support

Refer to Figure 4-11

for details.

Figure 4-11 IR & LED Board / Stand Support

1. Remove the stand.

2. Remove the IR/LED cover [1].

3. Remove the connectors on the IR/LED board.

4. Remove the fixation screws from the IR/LED board.

When defective, replace the whole unit.

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Stand Support Removal for LCD panel removal

1. Remove the Main Supply Panel as earlier described.

2. Remove the screws [2] and take the support out.

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. Follow instructions for removing the IR/LED board until 3.

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

4. Release the cable.

5. Release the clip on top of the unit and take the unit out.

When defective, replace the whole unit.

4.3.8 LCD Panel

Refer to Figure 4-12

to Figure 4-15 for details.

1. Remove the AmbiLight units as earlier described.

2. Remove the subwoofer as earlier described.

3. Remove the Top Support [1].

4. Release the LVDS [2] - and other connectors [3] from the

SSB.

5. Remove the subframe of the SSB [4] with the SSB still

mounted on it.

6. Release all connectors [5] from the PSU.

7. Remove the subframe of the PSU [6] with the PSU still

mounted on it.

8. Remove the stand support as earlier described.

9. Release the connectors [7] on the IR/LED Panel as earlier

described.

10. Remove the clips that secure the flare [8].

11. Remove the flare.

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

Figure 4-12 LCD Panel - top support

Figure 4-13 LCD Panel - SSB subframe

Figure 4-14 LCD Panel - PSU subframe

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Figure 4-15 LCD Panel - panel removal

4.4 Set Re-assembly

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

order.

Notes:

• While re-assembling, make sure that all cables are placed

and connected in their original position.

See Figure 4-1

, Figure 4-2 and Figure 4-3

• Pay special attention not to damage the EMC foams in the

set. Ensure that EMC foams are mounted correctly.

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5. Service Modes, Error Codes, and Fault Finding

Index of this chapter:

5.1

Test Points

5.2 Service Modes

5.3 Step by step 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).

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 step by step start up). See

section 5.3

Step by step 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

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

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

• 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 to 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, on the SSB,

shorting for a moment the solder pads SDM [1] (see

Figure 5-1

Figure 5-1 Service mode pads

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 set will toggle between the SDM and the normal

user menu (with the SDM mode still active in the background).

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.

Region Freq. (MHz)

Default

system

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

Europe, AP DVB-T 546.00 PID

Video: 0B 06 PID

PCR: 0B 06 PID

Audio: 0B 07

DVB-T

SDM

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5.2.2 Service Alignment Mode (SAM)

Purpose

• To perform (software) alignments.

• To change option settings.

• To easily identify the used software version.

• 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” or “I+” button. After activating

SAM with this method a service warning will appear on the

screen, continue by pressing the red button on the RC.

Contents of SAM (see also Table 6-5

• Hardware Information

– A. SW Version. Displays the software version of the

main software (example: Q5431-0.26.2.0=

AAAaB_X.Y.W.Z).

• AAAA= the chassis name, where “a” indicates the

chip version: e.g. TV543/32= Q543, TV543/82=

Q548, Q543/92= Q549.

• 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. SBY 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” sub-

menu. See chapter 6.

Alignments.

• Dealer Options. Extra features for the dealers. See Table

6-5.

• Options. Extra features for Service. For more information

regarding option codes, see chapter 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 8 “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 6-4

. Make sure to key in all three

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

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 information.

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

of specific software problems, the development

department can ask for this information.

• 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 from USB. To download several settings from

the USB stick to the TV. Same way of working 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 information.

How to Navigate

• In SAM, the menu items can be selected with the

“CURSOR UP/DOWN” key (or the scroll wheel) on the RC-

transmitter. The selected item will be highlighted. When not

PHILIPS

MODEL:

32PF9968/10

PROD.SERIAL NO:

AG 1A0620 000001

040

39mm

27mm

(CTN Sticker)

Display Option

Code

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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 (or the scroll

wheel), it is possible to:

– (De) activate the selected menu item.

– (De) activate the selected sub menu.

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

action.

How to Exit SAM

Use one of the following methods:

• Switch the 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 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).

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 information can be handy if no information is

displayed.

Only for Q548.1:

When in the Q548.1 chassis CSM is activated, a test pattern

will be displayed during 5 s.: 1 s. blue, 1 s. green, and 1 s. red,

then again 1 s. blue and 1 s. green. This test pattern is

generated by the PNX5120.

So if this test pattern is shown, it could be determined that the

back end video chain (PNX5120, LVDS, and display) of the

SSB is working.

For LED backlight TV sets, the test pattern is build as follows:

1 s. blue, 1 s. green, 1 s. red (generated by the PNX5120) and

further on with 3 seconds RGB pattern from the LED Dimming

Panel.

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 (or the scroll

wheel) on the RC-transmitter, can be navigated through the

menus.

Contents of CSM

The contents are displayed on three pages: General, Software

versions, and Quality items. However, these group names itself

are not shown anywhere in the CSM menu.

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

NVM. ComPair will foresee in a possibility to do this. This

identification number is the 12nc number of the SSB.

Remark: the content here can also be a part of the 12NC of

the SSB in combination with the serial number.

• 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: Q5431E_1.2.3.4.

• Stand-by SW. Displays the built-in stand-by processor

software version. Upgrading this software will be possible

via ComPair or via USB (see section Software U

pgrading).

Example: STDBY_1.2.3.4.

• MOP ambient light SW. Displays the MOP ambient light

EPLD SW.

• MPEG4 software. Displays the MPEG4 software (for sets

with MPEG4).

• PNX5120 boot NVM. Displays the SW-version that is used

in the PNX5120 boot NVM (for sets with PNX5120).

• LED Dimming SW. Displays the LED dimming EPLD SW

(for sets with LED backlight).

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 of the HDMI keys (or HDCP

keys) are valid or not. In case these keys are not valid and

the consumer wants to make use of the HDMI functionality,

the SSB has to be replaced.

• Ethernet MAC address. Not applicable.

• Wireless MAC address. Not applicable.

• 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”, else “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 the “MENU” (or HOME) button twice on the RC-

transmitter.

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5.3 Step by step 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 short cutting the pins on the SSB, the TV starts up

until it reaches the situation just before protection. So, this is a

kind of automatic step by step start-up. In combination with the

start-up diagrams below, it is shown which supplies are present

at a certain moment. Important to know is, that if e.g. the 3V3

detection fails and thus layer 2 error = 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

7101-1 is done, all ICs supplied by the +3V3 could be

destroyed, due to over voltage (12V on 3V3-line). It is

recommended to measure first the FET 7101-1 or others FETs

on short-circuit 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.

Figure 5-3 Transition diagram

18440_215_090227.eps

270209

Active

Semi

St by

Mains

off

GoToProtection

- WakeUp requested

- Acquisition needed

- Tact switch pushed

- stby requested and

no data Acquisition

required

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

18440_216a_090227.eps

270209

EJTAG probe

connected ?

Yes

ReleaseAVCsystem reset

Feed warm boot script

Cold boot?

Yes

Set I²C slave address

of StandbyµPto(A0h)

An EJTAG probe (e.g. WindPower ICE probe) can be

connected for Linux Kernel debugging purposes.

This will allow access to NVM and

NAND FLASH and cannotbedone

earlier becausetheFLASH needs to

be in Write Protect as long as the

suppliesare not available.

Detect EJTAG debugprobe

(pulling pin of the probeinterfaceto

ground byinserting EJTAG probe)

Release AVC system reset

Feed cold boot script

ReleaseAVCsystem reset

Feed initializing boot script

disable alive mechanism

Initialise I/O pins of the st-byµP:

- Switch reset-AVC LOW (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)

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

Off

Standby Supply starts running.

All standby supply voltagesbecome available.

st-byµPresets

Stand byor

Protec tio n

Mains isapplied

- Switch Audio-Reset high.

It is low in the standby mode if the standby

mode lasted longer than10s.

start keyboard scanning, RC detection. Wake upreasonsare

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 no issueinthissetup, the delayisautomatically

covered by the architectural setup)

ReleaseReset-PNX5100.

PNX5100 will start booting.

This 10ms delayisstill present to give some relaxation

to the supplies.(ThePCIarbiter on the PNX5100 is

never used and is not the reason anymore)

Switch HIGH the WP-NandFlashto

allow access to NAND Flash

This enables the +3V3and+5V converter. Asa

result, also+5V-tuner, +2V5, +1V8-PNX8541 and

+1V8-PNX5100 (if present) become available.

Confirmation received from NXP that there does not need to

be a delay between the riseofthe+1V2and the +3V3.Only

requirement is to have the +1V2 before or atthesametime

as the +3V3.150msdelayisdeleted.

Delayo

f50msneeded becauseofthelatencyof

the detect-1 circuit. This delayisalsoneeded for

the PNX5100. The reset of the PNX5100 should

only bereleased 10msafter powering the IC.

Detect2 should bepolledonthestandard40ms

interval and startup should becontinuedwhen

detect2 becomes high.

+12V, +24Vs,ALand Bolt-on power

isswitched on, followed by the +1V2 DCDC converter

Enable the supply detection algorithm

Yes

Detect-1 I/O line

High?

Switch ON Platform and display supply by switching

LOW the Standbyline.

Enable the DCDC converter for +3V3and

+5V. (ENABLE-3V3)

Voltage output error:

Layer1: 2

Layer2: 18

Detect2 high received

within 2 seconds?

Power-OK error:

Layer1: 3

Layer2: 16

Enter p rot ection

Yes

Wait 50ms

Enter protection

Yes

Detect-2 I/O line

High?

Disable 3V3, switch standby

line high and wait 4 seconds

Delay1.5second before checking detect2 line

if the detect2_delay_flagisset

Set detect2_delay_flag

Reset detect2_delay_flag

Carefull we don’t hit this error

directly if the delayflagisset.

Wait fixed time of 15ms

Detect2 high?

Yes

Detect-1 I/O line

High?

Wait 50ms

Yes

If the supply is hicking, the firstdetect2could

bepositive (12V still present), followed by

negative Supply-fault (already low). Adding a

fixed delay bringsusbehind this delaygap.

These checks prevent the set from going in to

standbyonthefalse error condition where the

first 3V3 is negative becauseofahickup,

although the 12V was abouttoreappear.

Becauseofthis reappearance,

the 12V check

is OK which would cause protection. If we wait

50ms,the3V3shouldbe back as well.

Detect-2 I/O line

High?

Yes

Reset detect2_delay_flag

Only usefull in case of PNX5100 present. To avoid

diversity in standbyµP,thereset-PNX5100 will still be

switched bythestandbyµP.

To: 18440_216b_090227.eps

Wait 10 ms

Service Modes, Error Codes, and Fault Finding

EN 21Q548.1E LA 5.

2009-Apr-03

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

18440_216b_090227.eps

270209

Yes

MIPS reads the wake upreason

from standbyµP.

Semi-Standby

Initialize tuner and Multi Standard decoder

Initialize video processing IC's

-localcontrast FPGA

-PNX5100(ifpresent)

Initialize source selection

Init ialize AutoTV

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 initialization

succeeded

within 20s?

Switch Standby I/O line high

and wait 4 seconds

RPC start (comm. protocol)

Set I²C slave address

of StandbyµPto(60h)

Yes

Disable all supply related protectionsand

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

switch off the remaining DC/DC

converters

Wait 5ms

Switch AVC PNX8543

in reset (active low)

Wait 10ms

Switch the NVM reset

line HIGH.

FlashtoRam

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 isavailable.

Timing needs to

be updated if more

mature info is

available.

Timing needs to be

updated if more

mature info is

available.

Initialize audio

Enter protection

Reset-system isswitched HIGH bythe

AVC attheendofthebootscript

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 standbyµP

Reset-system is connectedtothe

Micronas MultiStandard decoder.

Reset-Audio and Audio-Mute-Up are

switched byMIPS code lateroninthe

startup process

Reset-system isswitched HIGH bythe

AVC attheendofthebootscript

AVC releases Reset-Ethernet when the

end of the AVC boot-script is detected

Reset-Audio and Audio-Mute-Up are

switched byMIPS code lateroninthe

startupprocess

Switch on the displayincaseofa LED backlight

display by sending the TurnOnDisplay(1) (I²C)

command to the PNX5100

In caseofa LED backlight display, a LED DIM panel is present

which is fed bytheVdisplay. To power the LED DIM Panel, the

Vdisplay switch driven by the PNX5100 must beclosed. The

display startup sequence is taken care of bytheLEDDIM

panel. Secondly,

this cmd will alsoenable the LVDS outputof

the 5100 towards the LED DIM panel.

Enable the PWM output towards the displayLVDS

cable in caseofa LED Backlight set.

(CTRL4-PNX5100)

In caseofa LED backlight display, the PWM-dimming signal

needs to berouted to the LVDS cable. This routing is not

allowed in non-LED sets (see alsodisplay configuration)

Wake upreason

coldboot & not semi-

standby?

5100 SW start

MIPSsends displayparametersand

Bitmap to 5100

Startup screen cfg file

present?

MIPS triggers 5100 to displaythe

startup screen

Startup screen visible

yes

To keep this flowchart readable, the exact displayturn on

description is not copied here. Please see the Semi-standby

to On description for the detailed display startup sequence.

During the complete displaytimeoftheStartup screen, the

preheat condition of 100% PWM is valid.

Startup screen shall only bevisiblewhen there isacoldboot

to an active state end situation. The startup screen shall not

bevisiblewhen waking upforreboot reasons or waking upto

semi-standby conditions.

The firsttimeafter the option turn on of the startup screen or

when the set is virgin, the cfg file is not present and

hence

the startup screen will not be shown.

From : 18440_216a_090227.eps

From: 18440_216a_090227.eps

Service Modes, Error Codes, and Fault Finding

EN 22 Q548.1E LA5.

2009-Apr-03

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

Active

Semi Standby

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 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. A

transition ON->SEMI->STBY->SEMI->ON cannot be

made in less than 2s, because the standby state will

be maintained for at least 4s.

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.

- To have a reliable operation of the backlight, the backlight should be driven with a PWM duty cycle of 100%

during the first seconds. 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 has been switched on for at least the time which is

indicated in the display file as preheat time.

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 the semi-standby state: display

startup can start immediately when leaving

the semi-standby state.

Switch on LCD backlight (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) cmd to the PNX5100

Switch on the Ambilight functionality according the last status

settings.

The higher level requirement is that the

ambilight functionality may not be switched on

before the backlight is turned on in case the

set contains a CE IPB inverter supply.

Delay Lamp-on with the sum of the LVDS delay and

the Lamp delay indicated in the display file

PNX5100 present?

Yes

Switch on the display power by

switching LCD-PWR-ON low

Wait x ms

Switch on LVDS output in 8543

The exact timings to

switch on the

display (LVDS

delay, lamp delay)

are defined in the

display file.

Start POK line detection

algorithm

return

The complete algorithm description is

removed here.

Only the start of the algorithm

is mentioned here as reminder.

The sum of the LVDS delay and the Lamp delay needs

to be used because the Lamp delay is specified with

the appearance of the LVDS on the display as

reference. This moment is not known by ceplf, only the

switch on of the LCD power is known. The delta

between both is the LVDS delay.

Display already on?

(splash screen)

Yes

Display cfg file present

and up to date, according

correct display option?

Startup screen Option

and Installation setting

Photoscreen ON?

Yes

Prepare Start screen Display config

file and copy to Flash

Yes

18440_217_090227.eps

270209

Service Modes, Error Codes, and Fault Finding

EN 23Q548.1E LA 5.

2009-Apr-03

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

18440_219_090227.eps

270209

Semi Standby

Active

Wait x ms (display file)

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:

- TurnOnDisplay(0) (I²C) command to the PNX5100

- or sending OUTPUT-ENABLE(0) to the LED DIM

panel in case of a LED BL set.

Switch off Ambilight

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

Wait 100ms

Wait until Ambilight has faded out: Output power

Observer on PNX5100 should be zero

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.

PNX5100 present?

Yes

Switch off the display power by

switching LCD-PWR-ON high

Wait x ms

Switch off LVDS output in 8543

The exact timings to

switch off the

display (LVDS

delay, lamp delay)

are defined in the

display file.

Switch off POK line detection

algorithm

Service Modes, Error Codes, and Fault Finding

EN 24 Q548.1E LA5.

2009-Apr-03

Figure 5-8 “Semi Stand-by” to “Stand-by” flowchart

18440_220_090227.eps

270209

Transfer Wake up reasons to the Stand by µP.

Stand by

Semi Stand by

Disable all supply related protections and switch off

the DC/DC converters (ENABLE-3V3)

Switch OFF all supplies by switching HIGH the

Standby I/O line

Switch AVC system in reset state (reset-system and

reset-AVC lines)

Switch reset-PNX5100 LOW

Switch Reset-Ethernet LOW

Important remarks:

release reset audio 10 sec after entering

standby to save power

Also here, the standby state has to be

maintained for at least 4s before starting

another state transition.

Wait 5ms

Wait 10ms

Switch the NVM reset line HIGH

Switch 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).

Service Modes, Error Codes, and Fault Finding

EN 25Q548.1E LA 5.

2009-Apr-03

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

C or UART commands is necessary,

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.

Figure 5-9 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 serial interface cable for Q52x.x.

(using 3.5 mm Mini Jack connectors): 3138 188 75051.

Note: When having problems, please contact your local

support desk.

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 5-3

– LAYER 1 errors are one digit errors

– LAYER 2 errors are two digit errors.

• In protection mode.

– From consumer mode: LAYER 1.

– From SDM mode: LAYER 2.

• Fatal errors, if I

C bus is blocked and the set re-boots, CSM

and SAM are not selectable.

– From consumer mode: LAYER 1.

– From SDM mode: LAYER 2.

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.

• 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

Extra Information. 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.

E_06532_036.eps

150208

UART SERVICE

CONNECTOR

UART SERVICE

CONNECTOR

C SERVICE

CONNECTOR

TO TV

HDMI

C 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

Service Modes, Error Codes, and Fault Finding

EN 26 Q548.1E LA5.

2009-Apr-03

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.

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

• Via sensing of analogue values on the stand-by processor

or the PNX8543.

• Via a “not acknowledge” of an I

C communication.

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.

Table 5-2 Layer 1 code overview (multi chassis overview)

Table 5-3 Error code overview (multi chassis overview)

LAYER 1 codes

SSB 2

Display supply 3

Platform supply 4 Only for display option 196 and 197

Fan 7

AmbiLight or DC/DC or 3D LED dim panel 8

Description

LAYER 1 error

LAYER 2 error

Monitored

Medium

Error/Prot.

EB: in Error Buffer

BL: Blinking LED

Device

Defective board

Special Remarks

Main NVM 2 0 MIPS I

C1 E x STM24C128 SSB TV shut down with red LED blinking 2.

Temp. protection 3 12 MIPS I

C4 P BL/EB Supply

C3213MIPSI

C3 E BL/EB SSB SSB

TV is rebooting endlessly with red LED blinking “2”.

C2214MIPSI

C2 E BL/EB SSB SSB

PNX does not boot (HW cause)

PNX 5100 does not boot

215St-by µP I

C1 P BL SSB SSB

TV is rebooting endlessly with red LED blinking “2”

12V 3 16 St-by µP I/O P BL Supply

TV shut down with red LED blinking “3”.

12V 3 16 St-by µP I/O P BL Platform Supply

Inverter or display supply 3 17 Mips I/O E EB Supply

TV still in normal operation mode, but without backlights.

Enter CSM Layer 1 red LED blinking “3”.

Only for display option 196 and 197 4 17 Mips I/O E EB Display Supply

1V2, 1V2, 3V3, 5V to low 2 18 St-by µP I/O P BL SSB

TV shut down with red LED blinking “2”.

PNX 5100 2 21 MIPS I

C3 E EB PNX 5100 SSB

TV is rebooting endlessly, with red LED blinking “2” (shown

every 20 second).

HDMI MUX 2 23 MIPS I

C3 E EB TDA9996 SSB

Activate CSM red LED blinking “2”.

C switch 2 24 Mips I

C2 E EB PCA9540 SSB

Boot-NVM PNX5120 2 25 MIPS

C3 E EB STM24C08 SSB

TV is rebooting endlessly, with red LED blinking “2” (shown

every minute).

Multi Standard demodulator (Micronas IF) 2 27 MIPS I

C3 E EB DRX3616K

DRX3626K

SSB

TV is in normal operation but without video displayed (RF).

ARM (AL) 8 28 MIPS

C3 E EB NXP LPC2103 AL mod. or DC/DC

TV is in normal operation but without AMBILIGHT “on”.

FPGA (Local contrast) 2 29 MIPS

C3 E EB Altera SSB

Tuner1 2 34 MIPS I

C3 E EB UV1783S

HD1816

SSB

TV is in normal operation but without video displayed (RF).

FAN I

C expander 7 41 MIPS I

C2 E EB PCA 9533 FAN mod.

T× sensor 7 42 MIPS I

C2 E EB LM 75 T×sensor

FAN 1 7 43 MIPS

C2EEB FAN

FAN 2 7 44 MIPS

C2EEB FAN

MIPS does not boot (SW cause) 2 53 St-by µP I

C1 P BL PNX8543 SSB TV is rebooting endlessly with white LED blinking.

Display 5 64 MIPS

C2 E BL/EB Altera Display

FPGA LED dim 2D 2 65 MIPS

C3 E EB Xilinx SSB

FPGA LED dim 3D 8 65 MIPS I

C2 E EB Altera SSB

Service Modes, Error Codes, and Fault Finding

EN 27Q548.1E LA 5.

2009-Apr-03

Extra Information

• 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 5.8.6

UART 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.

• 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 can be

“19”. Check the logging for keywords like “I

C bus blocked”.

• Error 13 (I

C bus 3 blocked). 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 doesn’t boot). Indicates that the main

processor was not able to read his bootscript. This error will

point to a hardware problem around the PNX8543

(supplies not OK, PNX 8541 completely dead, I

C link

between PNX and Stand-by Processor broken, etc...).

When error 15 occurs it is also possible that I

C2 bus is

blocked (NVM). I

C2 can be indicated in the schematics as

follows: SCL-UP-MIPS, SDA-UP-MIPS, SCL-2 or SDA-2.

Other root causes for this error can be due to hardware

problems with: NVM PNX5120, PNX5120 itself, or DDRs.

• Error 16 (12V). This voltage is made in the power supply

and results in protection (LAYER 1 error = “3”). When SDM

is activated we see blinking LED LAYER 2 error = “16”.

• Error 17 (POK). The display is switched “on” with the

signal “Lamp On”. If the inverter starts (or 24V display is

OK) the POK line becomes “high”. If the POK line is not

“high”, the set backlight will be switched “off” and “on” again

for 3 times (start-up). If the set POK line becomes “high”

after the retries, no error is logged; if the POK stays “low”,

error is logged: LAYER 1 error = “3”, LAYER 2 error = “17”.

No protection is required, the start-up goes on.

• 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 (PNX5120). When there is no I

C communication

towards the PNX5120 after start-up (power “off” by

disconnection of the mains cord), LAYER 2 error will blink

continuously via the blinking LED procedure in SDM. (start-

up the TV with the solder paths short to activate SDM).

• Error 23 (HDMI). When there is no I

C communication

towards the HDMI multiplexer after start up, LAYER 2

error = “23” will be logged and displayed via the blinking

LED procedure if SDM is switched “on”.

• Error 25 (Boot-NVM PNX5120). When there is no I

communication towards the PNX5120 NVM after start-up,

TV is rebooting endlessly with blinking LAYER 1 error = 2

(shown every minute). When SDM is activated we see

blinking LED LAYER 2 error = “25”.

• Error 27 (Multi Standard demodulator). When there is no

C communication towards the Multi Standard

demodulator after start up, LAYER 2 error = “27” will be

logged and displayed via the blinking LED procedure when

SDM is switched “on”.

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

communication towards the FPGA ambilight after start up,

LAYER 2 error = “28” will be logged and displayed via the

blinking LED procedure if SDM is switched “on”. Note that

it can take up several minutes before the TV starts blinking

LAYER 1 error = “2” in CSM or in SDM, LAYER 2

error = “28”.

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

C communication

towards the tuner after start up, LAYER 2 error = “34” will

be logged and displayed via the blinking LED procedure

when SDM is switched on.

• 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 up to 2 minutes

before the TV starts blinking LAYER 1 error = “2” or in

SDM, LAYER 2 error = “53”.

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 5-3

Error code

overview (multi chassis 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

5-3

Error code overview (multi chassis overview)) and will

be displayed when SDM (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, with reboot starts after LAYER 1 error

blinking), one should short the SDM 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.

5.6.2 How to Activate

Use one of the following methods:

• 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 stand-by processor. At the time of this

release, this layer 1 error blinking was not working as

expected.

In case no picture is shown and there is no LED blinking,

read the logging to detect whether “error devices” are

mentioned. (see section 5.8.6

UART Logging).

• Activate the SDM. The blinking front LED will show the

entire contents 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.

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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.

• 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

Step by step 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. The

audio protection circuit pulls the “supply-fault” low and the tv set

will blink LAYER 1 error = 2 or in SDM, LAYER 2 error = 19.

Be very careful to overrule this protection via SDM (not to

cause damage to the Class D audio amplifier). Check audio

part first before activating via SDM. In case one of the

speakers is not connected, the protection can also be

triggered.

Repair Tips

• It is also possible that the set has 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 speakers during the ON

state of the TV can damage the audio amplifier.

5.7.3 Important remark regarding the blinking LED indication

As for the blinking LED indication, the blinking LED of layer 1

error displaying can be switched “off” by pushing the power

button on the keyboard.

This condition is not valid after the set was unpowered (via

mains interruption). The blinking LED starts again and can only

be switched “off” by unplugging the mains connection.

This can be explained by the fact that the MIPS can not load

the keyboard functionality from software during the start-up and

does not recognise the keyboard commands at this time.

5.8 Fault Finding and Repair Tips

Read also section “5.5 Error Codes, 5.5.4 Error Buffer, Extra

Information”.

5.8.1 Ambilight

Due to degeneration process of the AmbiLights, there can be a

difference in the colour and/or light output of the spare

ambilight module in comparison with the originals ones

contained in the TV set. Via ComPair, the light output can be

adjusted.

5.8.2 CSM

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. If this mechanism works it can be concluded that a large

part of the operating system is already working (MIPS, USB...)

5.8.3 Exit “Factory Mode”

When an “F” is displayed in the screen’s right corner, this

means the set is in “Factory” mode, and it normally

happens after a new SSB is mounted. To exit this mode, push

the “VOLUME minus” button on the TV’s local keyboard for 10

seconds (this disables the continuous mode).

Then push the “SOURCE” button on the TV’s local keyboard

for 10 seconds until the “F” disappears from the screen.

5.8.4 DC/DC Converter

Introduction

• The best way to find a failure in the DC-DC converters is to

check their starting-up sequence at “power-on via the

mains cord”, presuming that the stand-by microprocessor

is operational.

• If the input voltage of DC-DC converters is around 12.7 V

(measured on decoupling capacitors 2107 and 2123 and

the enable signals are “low” (active), then the output

voltages should have their normal values. The +12V and

+5VPOD supplies start-up first (enabled by PODMODE

signal from the stand-by microprocessor). There is a

supplementary condition for 12V to start-up: if the +5V-

POD does not start up due to a local defect, then +12V will

not be available as well. The +5V-ON supply is enabled by

the ONMODE signal (coming also from the stand-by

microprocessor). The +1V2 supply starts up when the

+12V appears, then at least 100 ms later, the +3V3 will be

activated via the ENABLE-3V3 signal from the stand-by

microprocessor. If the +12V value is less than 10 V, the last

enumerated voltages will not show up due to the under-

voltage detection circuit 7105-1 + 6101 and surrounding

components. Furthermore, if the +12V is less than 8 V,

then also the +1V2 will not be available. The +5V5-TUN

generator 7202 (present only for the analogue version of

China platforms) will start to operate as soon as the 12V

(PSU) is present.

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• The consumption of controller IC 7103 is around 19 mA

(that means almost 200 mV drop voltage across resistor

3108).

• The current capability of DC-DC converters is quite high

(short-circuit current is 7 to 10 A).

• The DETECT1 signal (active “low”) is an internal protection

(error 18) of the DC-DC convertor and will occur if the

output voltage of any DC-DC convertor is out of limits (10%

of the normal value).

Fault Finding

• Symptom: +1V2 not present (even for a short while ~10

ms)

– Check 12 V availability (resistor 3108, MOS-FETs

7101 and 7102), value of +12 V, and surrounding

components)

– Check the voltage on pin 9 (1.5 V),

– Check for +1V2 output voltage short-circuit to GND that

can generate pulsed over-currents 7...10 A through coil

5103.

– Check the over-current detection circuit (2106 or 3131

interrupted).

• Symptom: +1V2 present for about 100ms, +3V3 not rising.

– Check the ENABLE-3V3 signal (active “low”),

– Check the voltage on pin 8 (1.5 V),

– Check the under-voltage detection circuit (the voltage

on collector of transistor 7105-1 should be less than

0.8 V),

– Check for output voltages short-circuits to GND (+3V3)

that can generate pulsed over currents 7...10 A

through coil 5101,

– Check the over-current detection circuit (2105 or 3127

interrupted).

• Symptom: +1V2 OK, +3V3 present for about 100 ms.

Possible cause: SUPPLY-FAULT line stays “low” even

though the +3V3 and +1V2 is available - the stand-by

microprocessor is detecting that and switching “off” all

supply voltages.

– Check the drop voltage across resistor 3108 (they

could be too high, meaning a defective controller IC or

MOS-FETs),

– Check if the boost voltage on pin 4 of controller IC 7103

is less than 14 V (should be 19 V),

– Check if +1V2 or +3V3 are higher than their normal

values - that can be due to defective DC feedback of

the respective DC-DC convertor (ex. 3152, 3144).

• Symptom: +1V2 and +3V3 show a high level of ripple

voltage (audible noise can come from the filtering coils

5101, 5103). Possible cause: instability of the frequency

and/or duty cycle of a DC-DC converter or stabiliser.

– Check the resistor 3164, capacitors 2102 and 2103,

input and output decoupling capacitors.

– Check AC feedback circuits (2120, 2129, 3141, 3153,

2110, 2114 and 3135).

• Symptom: +1V2, +3V3 ok, no +5V5-TUN (analogue sets

only). Possible cause: the “+5V5-TUN GENERATOR”

circuit (7202 and surroundings components) is defective:

check transistor 7202 (it has to have gate voltage pulses of

about 10 V amplitude and drain voltage pulses of about 35

V amplitude) and surrounding components. A high

consumption (more than 6 mA) from +5V5-TUN voltage

can cause also +5V5-TUN voltage to be too low or zero.

Note: when a pair of power MOSFETs (7101 or 7102)

becomes defective, the controller IC 7103 should be replaced

as well.

5.8.5 Fan self test (only for sets with LED backlight)

In case fans are present, a softest can be done by pushing the

red coloured button on the remote control while the TV set is in

CSM. Exit CSM and check the status of the fans in the error

buffer by entering SAM (062596 + info button on the RC). In

case of failure (fully red screen) more detailed information is

available in the error buffer (error 41, 42, 43, 44).

5.8.6 UART Logging

When something is wrong with the TV set (f.i.the set is

rebooting) checking the UART logging using hyperterminal can

be done to find more information. Hyperterminal is a standard

Windows application. It can be found via Programs,

Accessories, Communications, Hyperterminal. Connect a

“ComPair UART”-cable (3138 188 75051) from the Service

connector in the TV set, via the ComPair interface (this is

compulsory, otherwise ICs are blown in the PC), to the

“COMx”-port of the PC. After start-up of Hyperterminal, fill in a

name (f.i. “logging”) in the “Connection Description” box, then

apply the following settings:

1. COMx

2. Bits per second = 115200

3. Data bits = 8

4. Parity = none

5. Stop bits = 1

6. Flow control = none

During the start-up of the TV set, the logging will be displayed.

This is also the case during rebooting of the TV set (the same

logging appears time after time). Also available in the logging

is the “Display Option Code” (useful when there is no picture),

look for item “DisplayRawNumber” in the beginning of the

logging.

Tip: When there is no picture available during reboot, it is

possible to check for “error devices” in the logging (LAYER 2

error). This can be very helpful to determine the failure cause

of the reboot. For protection state, there is no logging.

5.8.7 Loudspeakers

Make sure that the volume is set to minimum during

disconnecting the speakers in the “on” state of the TV. The

audio amplifier can be damaged by disconnecting the speakers

during “on” state of the set! Sometimes the set can go into

protection, but that is not always the case.

5.8.8 Tuner

Attention: In case the tuner is replaced, always check the tuner

options!

5.8.9 Display option code

Attention: In case the SSB is replaced, always check the

display option code in SAM, even when picture is available.

Performance with the incorrect display option code can lead to

unwanted side-effects for certain conditions.

5.8.10 Upgrade HDMI EDID NVM

To upgrade the HDMI EDID, see ComPair for further

instructions.

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5.8.11 Upgrade VGA EDID NVM

To upgrade the VGA EDID NVM, pin 7 of the EDID NVM [2] has

to be short circuited to ground. See ComPair for further

instructions.

Figure 5-10 VGA EDID NVM

SDM

EDID

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