Philips 32PFL3404/77, 32PFL3404/78, 42PFL3604/77, 42PFL3604/78, TCM3.1L Service Manual

Colour Television Chassis

TCM3.1L

Click

18520_000_090309.eps

090316

Contents Page Contents Page

1. Revision List 2

2. Technical Specifications and Connections 2

3. Precautions, Notes, and Abbreviation List 4

4. Mechanical Instructions 8

5. Service Modes, Error Codes, and Fault Finding 12

6. Alignments 20

7. Circuit Descriptions 22

8. IC Data Sheets 25

9. Block Diagrams Wiring Diagram 32" (Click) 37 Wiring Diagram 42" (Click) 38 Block Diagram 39

10. Circuit Diagrams and PWB Layouts Drawing PWB PSU: Power Supply Unit (32")

(A1) 40 41-42

PSU: Power Supply Unit (42") (A1) 43 45-46

Revision List

EN 2 TCM3.1L LA1.

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 Connection Overview

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

Click on the hyperlinks in table above.

2.3 Connection Overview

CTN Styling Published in SM

32PFL3404/77

Click 3122 785 18650

32PFL3404/78

Click 3122 785 18650

42PFL3604/77

Click 3122 785 18650

42PFL3604/78

Click 3122 785 18650

srotcennoc ediS

srotcennoc Rear

Technical Specifications and Connections

EN 3TCM3.1L LA 2.

2.3.1 Side connections

Note: The following connector colour abbreviations are used

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

1 - USB2.0

Figure 2-2 USB (type A)

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

2 - HDMI: Digital Video, Digital Audio - In

Figure 2-3 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 - n.c. 14 - n.c. 15 - DDC_SCL DDC clock j 16 - DDC_SDA DDC data jk 17 - Ground Gnd H

2.3.2 Rear Connections

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

See HDMI side connector.

2 - VGA/PC: 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

2 - PC Audio: Mini Jack: VGA Audio - In

Bk - Audio L/R 0.5 V

RMS

/ 10 kΩ jq

3 - Aerial - In

- - IEC-type (EU) Coax, 75 Ω D

4 - Mini Jack: Service Connector (UART)

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

5 - AV-Out: Cinch: Video CVBS - Out, Audio - Out

Ye - Video CVBS 1 V

/ 75 Ω kq

1 2 3 4

E_06532_022.eps

300904

18 2

E_06532_017.eps

250505

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171108

Precautions, Notes, and Abbreviation List

EN 4 TCM3.1L LA3.

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

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.

Precautions, Notes, and Abbreviation List

EN 5TCM3.1L LA 3.

3.3.6 Alternative BOM identification

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

The third digit in the serial number (example: AG2B0335000001) indicates the number of the alternative B.O.M. (Bill Of Materials) that has been used for producing the specific TV set. In general, it is possible that the same TV model on the market is produced with e.g. two different types of displays, coming from two different suppliers. This will then result in sets which have the same CTN (Commercial Type Number; e.g. 28PW9515/12) but which have a different B.O.M. number. By looking at the third digit of the serial number, one can identify which B.O.M. is used for the TV set he is working with. If the third digit of the serial number contains the number “1” (example: AG1B033500001), then the TV set has been manufactured according to B.O.M. number 1. If the third digit is a “2” (example: AG2B0335000001), then the set has been produced according to B.O.M. no. 2. This is important for ordering the correct spare parts! For the third digit, the numbers 1...9 and the characters A...Z can be used, so in total: 9 plus 26= 35 different B.O.M.s can be indicated by the third digit of the serial number.

Identification: The bottom line of a type plate gives a 14-digit serial number. Digits 1 and 2 refer to the production centre (e.g. AG is Bruges), digit 3 refers to the B.O.M. code, digit 4 refers to the Service version change code, digits 5 and 6 refer to the production year, and digits 7 and 8 refer to production week (in example below it is 2006 week 17). The 6 last digits contain the serial number.

Figure 3-1 Serial number (example)

3.4 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

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 6 TCM3.1L LA3.

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

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

Precautions, Notes, and Abbreviation List

EN 7TCM3.1L LA 3.

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

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

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

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

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

d'Appareils Radiorécepteurs et

Téléviseurs SCL Serial Clock I

SCL-F CLock Signal on Fast I

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

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

Mechanical Instructions

EN 8 TCM3.1L LA4.

4. Mechanical Instructions

Index of this chapter:

4.1 Service Positions

4.2 Cable Dressing and Taping

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 Service Positions

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

• The buffers from the packaging.

• Foam bars (created for Service).

4.1.1 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 4-1

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 positioning 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, the screen can be monitored.

Mechanical Instructions

EN 9TCM3.1L LA 4.

4.2 Cable Dressing and Taping

Figure 4-2 Cable dressing and taping 32" model

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Mechanical Instructions

EN 10 TCM3.1L LA4.

4.3 Assy/Panel Removal

Caution: It is mandatory to remount screws at their original

position during re-assembly. Failure to do so may result in damaging the SSB. Refer to Figure 4-4

for details.

4.3.1 Rear Cover

Warning/Notes:

• Disconnect the mains power cord before rear cover

removal.

• It is not necessary to remove the stand while removing the

rear cover.

• Re-use the original screws when re-assembling the TV.

1. Remove all screws of the rear cover.

Important: Be sure to re-use the same screws when remounting the rear cover, as these screws have a 30 degrees thread instead of the common used 45 degrees thread.

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 (in rubber) with two screws. When defective, replace the whole unit.

4.3.3 IR & LED Board

1. Remove the two screws that hold the assy.

2. Unplug the connector on the board (be aware of the

connector lock).

When defective, replace the whole unit.

4.3.4 Key Board Control Panel

1. Remove the two screws that hold the assy.

2. Unplug the connectors on the board. When defective, replace the whole unit.

4.3.7 LCD Panel

Description below is based upon the 42" model with LG display. Disassembly method of other LCD panels is comparable to the one described below. See also “Mechanical layout” drawings.

4. Unplug and remove all cables.

5. Remove the Main Supply Panel and Small SIgnal Board as described earlier.

6. Remove all metal brackets that are mounted on the panel (be aware of the different screws used, see figure “Used screws”): – Two VESA holder brackets at the top (screw #2). – Two SSB holder brackets (screws #2 and #3). – Two central holder brackets (screw #2). – One PSU holder bracket (screw#1).

7. Remove the stand [1] (screw #5).

8. Remove the subframe of the stand [2] (screw #2).

9. Remove the brackets [3] (screw #3) that secure the LCD panel, and remove screws #4 at the bottom of the LCD.

10. The LCD panel can now be lifted from the front cabinet.

Figure 4-4 Used screws

18520_101_090311.eps

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Mechanical Instructions

EN 11TCM3.1L LA 4.

Figure 4-5 Mechanical layout 32" model

32 Mechanical layout definition

Button

SIDE AV

bracket

SSB

IR - L en s

Stand

2 * Speaker

AC-In Bracket

IPB

VESA

200*200

IP B b rac ke t

Panel

bracket L

Panel

bracket R

SSB bracket B

SSB bracket U

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42 Mechanical layout definition

VESA

400*400

Panel

bracket R

Service Modes, Error Codes, and Fault Finding

EN 12 TCM3.1L LA5.

5. Service Modes, Error Codes, and Fault Finding

Index of this chapter:

5.1 Measurement Conditions

5.2 Service Modes

5.3 Service Tools

5.4 Error Codes

5.5 The Blinking LED Procedure (LAYER-2 codes)

5.6 Fault Finding and Repair Tips

5.7 Software Upgrading

5.1 Measurement Conditions

Perform measurements under the following conditions:

• Service Default Mode.

• Video: Colour bar signal.

• Audio: 3 kHz left, 1 kHz right.

5.2 Service Modes

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).

Service Default mode (SDM) and Service Alignment Mode (SAM) offer 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 5.3.1 ComPair

5.2.1 Service Default Mode (SDM)

Purpose

To start the blinking LED procedure where only layer 2 errors are displayed (see also section 5.4 Error Codes

– Op. Hours. During the life time cycle of the TV, a life

timer is kept. It counts the normal operation hours, not the Stand-by hours. The actual value of the life timer is displayed in SAM in decimal value. For every two startups the counter increases by one. Min. 5 digits are displayed in decimal digits. In detail:

• Every 2x cold start-ups, to display a picture, increases the counter by 1 (i.e. interrupt the mains supply 2x while the set is ON).

• Every 2x warm start-ups (from Stand-by), to display a picture, increases the counter by 1.

• Every hour of normal operating increases the counter by 1 (i.e. if a set is continue ON for 2 hours, then increase the counter by 2).

• Stand-by hours are NOT counted.

– Main SW ID. Displays the loaded main SW version. – Error Code x (where “x” is 1 to 5). The most recent

error is displayed at the upper position (for an error explanation see section 5.4 Error Codes

• Clear Codes. When “arrow right” is pressed and then the “OK” button is pressed, the error buffer is reset.

• Options. Choosing the CTN will set the options, see also chapter 6.4 Option Settings

• RGB Align. This will activate the alignments sub-menu. See chapter 6.3.2 White Point

for more details.

• NVM Editor. This will give the opportunity to directly change values in the NVM by selecting the address and value. Use decimal values! See chapter 6.4 Option Settings.

• NVM Copy. For easy transfer of NVM settings: – Copy to USB. To upload several settings from the TV

to an USB stick. See 5-1 USB Copy content

. To upload the settings, press “arrow right” (or the “OK button), confirm with “OK” and wait until “OK” appears. Now the settings are stored onto the USB stick can be used to download to 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.

– Copy from USB. To download several settings from

Service Modes, Error Codes, and Fault Finding

EN 13TCM3.1L LA 5.

• Tuner. This will activate the alignments sub-menu. See chapter 6.3.1 Tuner AGC (RF AGC Take Over Point Adjustment) for more details.

• Auto ADC. This will activate the alignments sub-menu. See chapter 6.3.3 Auto ADC for more details.

How to Navigate

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

• With the “Arrow Left/Right” keys, 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.

• With the “Menu/Home” key, it is possible to go back to the previous selection.

How to Exit SAM

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

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

Contents of CSM

The contents are displayed on two pages:

• Model Number. 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 initialised after corruption, this model type has to be rewritten to NVM. ComPair will foresee in a possibility to do this.

• Production Serial Number. 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.

• Software Version. Displays the current main software version. In case of field problems that are related to software, this software can be upgraded. As it is consumer upgradeable, it will also be published on the Internet.

• Option Code. Gives the display codes as set in SAM. See also section 6.4 Option Settings

• Codes. Gives the error code overview. See also table 5-3

Layer-2 code overview.

• SSB. Gives an identification of the SSB order code 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

16 PQ version Supplier to advise

PQ version

No. Read and display.

17 HDCP key Valid No. Are measure results

18 Signal Quality/Present Digital percentage and

analog Yes/No.

No. Are measure results

19 Audio System Detect and display No. Are measure results

20 Video Format Detect and display No. Are measure results

21 Stand-by uP SW ID De tect and display No. Read and display

S/N NVM USB Copy content To be copied /Remarks

S/N Description Explanation

1 Model Number NVM read/write (max. 16 characters)

2 Production Serial Nbr. NVM read/write (max. 16 characters)

3 Software Version Detect and Display SW version

4 Option Code Store in NVM (panel code)

5 Codes Layer-2 error code.

6 SSB 12NC NVM read /write (12 characters)

7 Display 12NC NVM read/write (12 characters)

8 PSU 12NC NVM read/write (12 characters)

9 NVM version Detect and Display NVM version

10 HDCP key Detect and display (valid/invalid)

11 Signal Quality/Present Present / No signal

12 Audio System Detect and display:

Mono, Stereo, Nicam (signal dependent)

13 Video Format Detect and display: signal dependent

14 Stand-by uP SW ID Detect and display.

Service Modes, Error Codes, and Fault Finding

EN 14 TCM3.1L LA5.

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 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.

5.4 Error Codes

5.4.1 Introduction

The error code buffer contains all detected errors since the last time the buffer was erased. The buffer is written from top to bottom (or left to right), new errors are logged at the top/left side, and all other errors shift one position to the bottom/right. When an error occurs, it is added to the list of errors, provided the list is not full. When 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/

There is a simple blinking LED procedure for board level repair (home repair) the so called LAYER 1 errors, next to the existing errors which are LAYER 2 errors:

• LAYER 1 errors are one digit errors

• LAYER 2 errors are two digit errors.

When is LAYER 1 or 2 available:

• 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, LAYER 2 is 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.

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). 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.

5.4.2 How to Read the Error Buffer

UART SERVICE

CONNECTOR

UART SERVICE

CONNECTOR

TO I2C SERVICE CONNECTOR

TO TV

RC out

RC in

Optional

Switch

Power ModeLink/

Activity

ComPair II

Multi

function

RS232 /UART

Service Modes, Error Codes, and Fault Finding

EN 15TCM3.1L LA 5.

5.4.4 Error Codes

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

Table 5-3 Layer-2 code overview

5.5 The Blinking LED Procedure (LAYER-2 codes)

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 that 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 LED pulse with as many pulses as the error code number, followed by a time period of

1.5 seconds in which the LED is “off”. Then this sequence is repeated. E.g. 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 RC command terminates this sequence.

Displaying the entire error buffer The entire error buffer can be displayed when service mode “SDM” is entered (by remote control command 062596<MENU>). When in protection, this sequence will not work, but than LAYER-1 error code should suffice. In order to avoid confusion with RC signal reception blinking, this blinking procedure is terminated when a RC command is received.

5.5.2 How to Activate

Use one of the following methods:

• Activate the CSM. The blinking front LED will show only the latest LAYER-1 error.

• Activate the SDM. The blinking front LED will show the entire contents of the LAYER-2 error buffer.

Code Board

2SSB

3 Platform supply (12V detection)

Layer 2 error code

Error Description

Detection Method

Type Remarks

0 No Error N/A N/A N/A

14 General I2CI2C Bus Spontaneous

blinking

Communication Error on I2C bus

15 Tuner I2C Bus Error Log

+ blinking in SDM

Communication Error with Tuner

16 Demodulator I2C Bus Error Log

+ blinking in SDM

Communication Error with TDA9886T

17 Audio amplifier I2C Bus Error Log

+ blinking in SDM

Communication Error with Audio amplifier

18 NVM EEPROM I

C Bus Spontaneous

blinking

Communication Error with EEPROM

Service Modes, Error Codes, and Fault Finding

EN 16 TCM3.1L LA5.

5.6 Fault Finding and Repair Tips

5.6.1 Fault Finding Flow Charts

Figure 5-2 No picture, no sound, no backlight. Fuse broken.

18520_204_090313.eps

090313

No Picture, no sound, no Back light, Fuse Broken

For P22,pin10 is

3.3V , OK?

For P22,pin1 is

24V , OK?

Check IPB

For P22 ,Pin 7~8

is 3.3V, OK?

Check Q10, X5,IR_MCU,KEY, MCU_RESET,U8.

Check main board DV10

&+3.3V OK?

NO NO

YES YES YES

Check main board DDRV & AV12, OK?

YES

Check main board

short_protect ,

oreset#,pwr_detect

YES

Check IPB

No Picture, Back light & Sound OK

Service Modes, Error Codes, and Fault Finding

EN 17TCM3.1L LA 5.

Figure 5-4 Picture okay, no sound.

18520_206_090313.eps

090313

Picture OK, No sound

Check the voltage of

U17.8~11,it 24v?

Check

L139,L140

Check the Q24

&,is it O K?

Change the

software of U10 &

Change the U17

Check

U17.24,U17.21,

U17.36 is 3.3V?

Check the wave of

I2C&I2S OK?

Yes

Check the voltage of

U17.31 & U17.23,is it OK?

Yes

Check

R & L speaker

Change the

software of U10

Check the

L103,L101,R361,R362

No colour

Service Modes, Error Codes, and Fault Finding

EN 18 TCM3.1L LA5.

5.7 Software Upgrading

5.7.1 Introduction

It is possible for the user to upgrade the main software via the USB port. A description on how to upgrade the main software can be found in the DFU and below.

5.7.2 Main 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 “upgrade.bin”. This can also be done by the consumers themselves via the Software Update Assistant in the user menu (see DFU), but they will have to download their software from the commercial Philips website.

How to upgrade (see also figure 5-9 User SW upgrade flowchart):

1. Copy the “upgrade.bin” file to the root of the USB stick.

2. Power “off” the TV and remove all memory devices.

3. Insert the USB stick that contains the downloaded software upgrade.

4. Switch “on” the TV, and activate the Main menu with the “Menu/House” key on the remote control.

5. In the Main menu, go to the “Software update” item.

6. Press “OK” key to go to the submenu.

7. Select “Local updates” in the submenu and press the “OK” key to enter the Software Update application.

8. You will be prompted to cancel or to proceed with the software updating.

9. To proceed, select “Update” and press the “OK” key to enter the next menu. In the next menu select “Start” and press “OK” key to start the software update.

10. Upgrading will now begin and the progress of the updating will be displayed. After the software updating is completed, the TV will automatically restart.

5.7.3 Stand-by Software Upgrade

In this chassis it is not possible to upgrade the Stand-by

5.7.4 Upgrade HDMI EDID NVM

To upgrade the HDMI EDID, pin 7 of the EDID NVM [1] has to be short circuited to ground. See ComPair for further instructions.

Figure 5-6 HDMI-1 EDID NVM

18520_208_090313.eps

090313

Service Modes, Error Codes, and Fault Finding

EN 19TCM3.1L LA 5.

5.7.6 Main SW upgrade flowchart.

A newer version of software is deceted.

Do you wa nt to update?

UpgradeCancel

An equal/older version of software is

detected .

Do you want to proceed?

Note: Should be done only if necessary.

UpgradeCancel

Layout 1

Layout 2

Power off the set

Plug-in the USB stick

Enter into Setup Menu and active

local upgrades

Valid auto-run file?

Is US B file ver sion >

set SW

Is US B file ver sion <=

set SW

End

Display U SB sw

newer than the TV

sw.P ro mpt use r to

com firm

Display U SB sw

equal/older than the

TV sw.Prom pt u ser to

com firm

Power on the set

De tect U SB þbreak inÿand

check a utorun file

Please donÿt shut off the power

The software update may takes 3 to 5

minutes

Erasing...

Please donÿt shut off power

The software update may takes 3 to 5

minutes

Upgrading...18%

Layout 3

Layout 4

See Layout 1

See Layout 2

Alignments

EN 20 TCM3.1L LA6.

6. Alignments

Index of this chapter:

6.1 General Alignment Conditions

6.2 Hardware Alignments

6.3 Software Alignments

6.4 Option Settings

6.5 Reset of Repaired SSB

6.1 General Alignment Conditions

Perform all electrical adjustments under the following conditions:

• Power supply voltage (depends on region): – AP-NTSC: 120 VAC or 230 V

/ 50 Hz (± 10%).

– AP-PAL-multi: 120 - 230 V

/ 50 Hz (± 10%).

– EU: 230 V

/ 50 Hz (± 10%).

– LATAM-NTSC: 120 - 230 V

/ 50 Hz (± 10%).

– US: 120 V

/ 60 Hz (± 10%).

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

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

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

• Test probe: Ri > 10 MΩ, Ci < 20 pF.

• Use an isolated trimmer/screwdriver to perform alignments.

6.1.1 Alignment Sequence

• First, set the correct options: see also section Option codes

• Warming up (>15 minutes).

• Start the alignments.

6.2 Hardware Alignments

Not applicable.

6.3.1 Tuner AGC (RF AGC Take Over Point Adjustment)

Purpose: To keep the tuner output signal constant as the input

signal amplitude varies.

The AGC alignment is done automatically (standard value: “12”). Store settings and exit SAM

6.3.2 White Point

• Press the “Menu/Home” button on the RC, and then select “Picture”. Set the picture settings as follows:

• Activate SAM mode and select “RGB Align”.

White point alignment LCD screens:

• Use a 100% white screen on HDMI-1 as input signal and set the following values: – “Colour temperature”: “Cool”. – All “R/G/B_Gain” values to: “127”. – All “R/G/B_Offset” values to: “240”.

In case colour analyser can be used:

• Measure with a calibrated contactless colour analyser in the centre of the screen. Consequently, the measurement needs to be done in a dark environment.

• Adjust the correct x,y coordinates by means of decreasing the value of one or two other white points to the correct x,y coordinates (see Table 6-1

). Tolerance dx, dy: ± 0.004.

Only the “Cool” colour temperature needs to adjust.

• When finished, select “Store” in the “RGB Align” sub menu, and press “OK” on the RC to store the aligned values to the

Picture Setting

Smart Picture Personal

Colour Temperature Cool

Dynamic Contrast Off

Dynamic Backlight Off

Colour Enhancement Off

Light Sensor Off

Alignments

EN 21TCM3.1L LA 6.

6.3.3 Auto ADC

Purpose: For correct gray- and colour scale values of the VGA

and YPbPr inputs.

How to align the VGA/PC input:

1. Provide a 1024 × 768 @ 60 Hz test signal with White/ Black squares to the VGA input.

2. Select “Auto ADC” in the SAM menu.

3. Press the “Arrow right” button on the RC.

4. Press “OK” on the RC.

5. Wait until OSD shows “Auto ADC - OK”.

How to align the YPbPr inputs (CVI-1 and CVI-2):

1. Provide a 1024 × 768 @ 60 Hz test signal with 100% 8 step colour bar to the YPbPr input.

2. Rest is the same as for the VGA input.

6.4 Option Settings

6.4.1 Introduction

The microprocessor communicates with a large number of I

C ICs in the set. To ensure good communication and to make digital diagnosis possible, the microprocessor has to know which ICs to address, and what brand and type of display is used.

6.4.2 Display code

Changing the display option code via a standard RC

Key in the code “0 6 2 5 9 8 MENU x x x” (where x x x is the 3 digit decimal display code of the used display *).

Tips:

• Keep the RC close to the IR receiver, and make sure the

LED blinks when entering a code.

• Key in all codes in one sequence, without pauses. 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

• The new option setting is only active after the TV is switched “off/on” with the mains switch (the NVM is then read again).

6.5 Reset of Repaired SSB

When a repaired SSB will be used in an other TV, it is very important that the correct info is written into the NVM w.r.t. 12NC of the SSB, production serial number of the TV, 12NC of display and PSU, etc. To set all this, the ComPair tool can be used, or the NVM can be edited directly via the NVM editor (in SAM). Find below the addresses of these items. Use the decimal values. In case of a display replacement, reset the “Operation hours” to “0”, or to the operation hours of the replacement display.

Table 6-3 NVM addresses of “reset items”

Item NVM Address (decimal)

Display code 3195

Production serial number 3196 - 3211 (16 bytes)

SSB 12NC 3212 - 3225 (16 bytes)

Display 12NC 3228 - 3243 (16 bytes)

PSU 12NC 3244 - 3259 (16 bytes)

Model Number 3260 - 3275 (16 bytes)

Operational hours not available at the time of publishing

+ 46 hidden pages

Philips 32PFL3404/77, 32PFL3404/78, 42PFL3604/77, 42PFL3604/78, TCM3.1L Service Manual

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