Philips LC4.8A AA Schematic

0 (0)

Published by BB 0567 TV Service Printed in the Netherlands Subject to modification EN 3122 785 15440

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

LC4.8A

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Contents Page Contents Page

1. Technical Specifications, Connections, and Chassis

Overview 2

2. Safety Instructions, Warnings, and Notes 5

3. Directions for Use 7

4. Mechanical Instructions 8

5. Service Modes, Error Codes, and Fault Finding 14

6. Block Diagrams, Testpoint Overviews, and

Waveforms

Wiring Diagram 37” LCD 23

Wiring Diagram 42” LCD 24

Block Diagram Video 25

Block Diagram Audio 26

Block Diagram Supply 37” 27

Block Diagram Supply 42” 28

Testpoint Overview Small Signal Board 29

I2C Overview 30

Supply Voltage Overview 31

7. Circuit Diagrams and PWB Layouts Diagram PWB

LCD Supply 37”: Mains Filter + Standby (A1)32 34-35

LCD Supply 37”: Supply (A2) 33 34-35

LCD Supply 42”: Mains Filter + Stdby A (A1) 36 40-41

LCD Supply 42”: Supply A (A2) 37 40-41

LCD Supply 42”: Mains Filter + Stdby B (A3) 38 40-41

LCD Supply 42”: Supply B (A4) 39 40-41

SSB: Tuner and VIF (B1) 42 65-74

SSB: Hercules (B2)43 65-74

SSB: Sync Interface (B3)44 65-74

SSB: Audio Delay Line (Reserved) (B4)45 65-74

SSB: Audio Processing (B5)46 65-74

SSB: DC-DC Converter (B6)47 65-74

SSB: Diversity Tables B1-B6 (B1-6)48

SSB: Scaler (B7)49 65-74

SSB: Scaler (B8)50 65-74

SSB: Scaler Interface (B9) 51 65-74

SSB: SDRAM (B10) 52 65-74

SSB: Flash / Control (B11)53 65-74

SSB: HDMI (B12) 54 65-74

SSB: MUX-Sync Interface (B13) 55 65-74

SSB: Top Connectors (B16) 56 65-74

SSB: Side Connectors (B17) 57 65-74

SSB: ADC (B18) 58 65-74

SSB: Columbus (B19) 59 65-74

SSB: EPLD (B20)60 65-74

SSB: EPLD (B21)61 65-74

SSB: Diversity Tables B9-B21 (B9-21) 62

SSB: Digital I/O (B22) 63 65-74

SSB: Cinch Analog I/O (1FH) (B23) 64 65-74

Side I/O Panel (D) 75 76

Control Board (E) 77 78

LED Panel (J) 79 80

Standby Audio Panel: Connections (SA1) 81 84-86

Standby Audio Panel: Standby (SA2) 82 84-86

Standby Audio Panel: Audio (SA3) 83 84-86

8. Alignments 87

9. Circuit Descriptions, Abbreviation List, and IC Data

Sheets 92

Abbreviation List 100

IC Data Sheets 103

10. Spare Parts List 107

11. Revision List 116

Technical Specifications, Connections, and Chassis Overview

EN 2 LC4.8A AA1.

1. Technical Specifications, Connections, and Chassis Overview

Index of this chapter:

1.1 Technical Specifications

1.2 Connection Overview

1.3 Chassis Overview

Notes:

• Figures can deviate due to the different set executions.

• Specifications are indicative (subject to change).

1.1 Technical Specifications

1.1.1 Vision

Display type : LCD, IPS

Screen size : 37” (94 cm), 16:9

: 42” (107 cm), 16:9

Resolution (HxV pixels) : 1366 x 768

Contrast ratio : 800:1 (37 inch)

: 700:1 (42 inch)

Light output (cd/m

) : 550

Response time (ms) : 8

Viewing angle (HxV degrees) : 176x176

Tuning system : PLL

TV Colour systems : PAL B/G, D/K, I

: SECAM B/G, D/K, L/L’

: NTSC M/N 3.58

Video playback : NTSC M/N 3.58, 4.43

: PAL B/G

: SECAM L/L’

Supported computer formats : VGA (640x480)

: MAC (640x480)

: SVGA (800x600)

: XVGA (1024x768)

: WXGA (1280x768)

Supported video formats : 640x480i - 1fH

: 720x576i - 1fH

: 640x480p - 2fH

: 720x576p - 2fH

: 1920x1080i - 2fH

Presets/channels : 100/125 presets

Tuner bands : VHF

: UHF

: S-band

: Hyper-band

1.1.2 Sound

Sound systems : FM-mono

: FM-stereo B/G

: NICAM B/G, D/K, I, L

: AV Stereo

Maximum power (W

RMS

) : 2 x 15

1.1.3 Miscellaneous

Power supply:

- Mains voltage (V

) : 220 - 240 ( /79 / 98)

: 90 - 276 ( /93)

- Mains frequency (Hz) : 50 / 60

Ambient conditions:

- Temperature range (°C) : +5 to +40

- Maximum humidity : 90% R.H.

Power consumption

- Normal operation (W) : ≈ 185 (37 inch)

: ≈ 246 (42 inch)

- Stand-by (W) : < 2

Dimensions (WxHxD cm) : 110.5 x 61 x 9.7 (37”)

: 124 x 68 x 10.4 (42”)

Weight (kg) : 27 (42 inch)

: 24 (37 inch)

1.2 Connection Overview

Note: The following connector colour abbreviations are used

(acc. to DIN/IEC 757): Bk= Black, Bu= Blue, Gn= Green, Gy=

Grey, Rd= Red, Wh= White, and Ye= Yellow.

1.2.1 Side I/O connections

Figure 1-1 Side I/O connections

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

1 -Ground Y Gnd H

2 -Ground C Gnd H

3 -Video Y 1 V

/ 75 ohm j

4 -Video C 0.3 V

/ 75 ohm j

Cinch: Video CVBS - In, Audio - In

Ye -Video CVBS 1 V

/ 75 ohm jq

Wh -Audio L 0.5 V

RMS

/ 10 kohm jq

Rd - Audio R 0.5 V

RMS

/ 10 kohm jq

Mini Jack: Audio Head phone - Out

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

1.2.2 Rear Connections

Figure 1-2 Rear I/O

Aerial - In

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

Cinch: Video CVBS - In, Audio - In

Ye -Video CVBS 1 V

/ 75 ohm jq

Wh -Audio L 0.5 V

RMS

/ 10 kohm jq

Rd - Audio R 0.5 V

RMS

/ 10 kohm jq

Cinch: Video CVBS - Out, Audio - Out

Ye -Video CVBS 1 V

/ 75 ohm kq

Wh -Audio L 0.5 V

RMS

/10 kohm kq

Rd - Audio R 0.5 V

RMS

/ 10 kohm kq

Cinch: CVI-1 Video YPbPr - In

Gn - Video Y 1 V

/ 75 ohm jq

Bu -Video Pb 0.7 V

/ 75 ohm jq

AudioS-Video Video

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Technical Specifications, Connections, and Chassis Overview

EN 3LC4.8A AA 1.

Rd - Video Pr 0.7 V

/ 75 ohm jq

Cinch: CVI-1 Audio - In

Rd - Audio - R 0.5 V

RMS

/ 10 kohm jq

Wh -Audio - L 0.5 V

RMS

/ 10 kohm jq

Cinch: PC Audio - In

Rd - Audio - R 0.5 V

RMS

/ 10 kohm jq

Wh -Audio - L 0.5 V

RMS

/ 10 kohm jq

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

1 -Ground Y Gnd H

2 -Ground C Gnd H

3 -Video Y 1 V

/ 75 ohm j

4 -Video C 0.3 V

P / 75 ohm j

Service connector (ComPair)

1 -SDA-S I

C Data (0 - 5 V) jk

2 -SCL-S I

C Clock (0 - 5 V) j

3 -Ground Gnd H

Service connector (UART)

1 -UART_TX Transmit k

2 -Ground Gnd H

3 -UART_RX Receive j

HDMI/PC-D: Digital Video, Digital Audio - In

Figure 1-3 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

18 - +5V j

19 - HPD Hot Plug Detect j

20 - Ground Gnd H

PC VGA/DVI-2: Video 2fH RGB/YPbPr - In

Figure 1-4 VGA Connector

1 -Video Red/Pr 0.7 V

/ 75 ohm j

2 -Video Green/Y 0.7 V

/ 75 ohm j

3 -Video Blue/Pb 0.7 V

/ 75 ohm 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

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Technical Specifications, Connections, and Chassis Overview

EN 4 LC4.8A AA1.

1.3 Chassis Overview

Figure 1-5 Chassis overview

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SIDE CONTROL

BOARD

SMALL

SIGNAL BOARD

LCD PANEL

POWER SUPPLY

PANEL

AUDIO STANDBY

PANEL

LED PANEL

SIDE I/O PANEL

Safety Instructions, Warnings, and Notes

EN 5LC4.8A AA 2.

2. Safety Instructions, Warnings, and Notes

Index of this chapter:

2.1 Safety Instructions

2.2 Warnings

2.3 Notes

2.1 Safety Instructions

Safety regulations require the following during a repair:

• Connect the set to the Mains (AC Power) via an isolation

transformer (> 800 VA).

• Replace safety components, indicated by the symbol h,

only by components identical to the original ones. Any

other component substitution (other than original type) may

increase risk of fire or electrical shock hazard.

Safety regulations require that after a repair, the set must be

returned in its original condition. Pay in particular attention to

the following points:

• Route the wire trees correctly and fix them with the

mounted cable clamps.

• Check the insulation of the Mains (AC Power) lead for

external damage.

• Check the strain relief of the Mains (AC Power) cord for

proper function.

• Check the electrical DC resistance between the Mains (AC

Power) plug and the secondary side (only for sets that have

a Mains (AC Power) isolated power supply):

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

between the two pins of the Mains (AC Power) plug.

2. Set the Mains (AC Power) switch to the "on" position

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

3. Measure the resistance value between the pins of the

Mains (AC Power) plug and the metal shielding of the

tuner or the aerial connection on the set. The reading

should be between 4.5 Mohm and 12 Mohm.

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.

2.2 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. Available

ESD protection equipment:

– Complete kit ESD3 (small tablemat, wristband,

connection box, extension cable and earth cable) 4822

310 10671.

– Wristband tester 4822 344 13999.

• 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.

2.3 Notes

2.3.1 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 (see chapter 5) 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.

• The semiconductors indicated in the circuit diagram and in

the parts lists, are interchangeable per position with the

semiconductors in the unit, irrespective of the type

indication on these semiconductors.

2.3.2 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 kohm).

• Resistor values with no multiplier may be indicated with

either an "E" or an "R" (e.g. 220E or 220R indicates 220

ohm).

• All capacitor values are given in micro-farads (µ= x10

-6

nano-farads (n= x10

-9

), or pico-farads (p= x10

-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 in the Spare Parts

List. Therefore, always check this list when there is any

doubt.

2.3.3 Rework on BGA (Ball Grid Array) ICs

General

Although (LF)BGA assembly yields are very high, there may

still be a requirement for component rework. By rework, we

mean the process of removing the component from the PWB

and replacing it with a new component. If an (LF)BGA is

removed from a PWB, the solder balls of the component are

deformed drastically so the removed (LF)BGA has to be

discarded.

Device Removal

As is the case with any component that, is being removed, it is

essential when removing an (LF)BGA, that the board, tracks,

solder lands, or surrounding components are not damaged. To

remove an (LF)BGA, the board must be uniformly heated to a

temperature close to the reflow soldering temperature.

A uniform temperature reduces the risk of warping the PWB. To

do this, we recommend that the board is heated until it is certain

that all the joints are molten. Then carefully pull the component

off the board with a vacuum nozzle. For the appropriate

temperature profiles, see the IC data sheet.

Area Preparation

When the component has been removed, the vacant IC area

must be cleaned before replacing the (LF)BGA.

Removing an IC often leaves varying amounts of solder on the

mounting lands. This excessive solder can be removed with

either a solder sucker or solder wick. The remaining flux can be

removed with a brush and cleaning agent.

Safety Instructions, Warnings, and Notes

EN 6 LC4.8A AA2.

After the board is properly cleaned and inspected, apply flux on

the solder lands and on the connection balls of the (LF)BGA.

Note: Do not apply solder paste, as this has been shown to

result in problems during re-soldering.

Device Replacement

The last step in the repair process is to solder the new

component on the board. Ideally, the (LF)BGA should be

aligned under a microscope or magnifying glass. If this is not

possible, try to align the (LF)BGA with any board markers.

So as not to damage neighbouring components, it may be

necessary to reduce some temperatures and times.

More Information

For more information on how to handle BGA devices, visit this

URL: www.atyourservice.ce.philips.com (needs subscription,

not available for all regions). After login, select “Magazine”,

then go to “Workshop Information”. Here you will find

Information on how to deal with BGA-ICs.

2.3.4 Lead-free Solder

Philips CE is producing lead-free sets (PBF) from 1.1.2005

onwards.

Identification: The bottom line of a type plate gives a 14-digit

serial number. Digits 5 and 6 refer to the production year, digits

7 and 8 refer to production week (in example below it is 1991

week 18).

Figure 2-1 Serial number example

Regardless of the special lead-free logo (which is not always

indicated), one must treat all sets from this date onwards

according to the rules as described below.

Figure 2-2 Lead-free logo

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

by the workshop during a repair:

• Use only lead-free soldering tin Philips SAC305 with order

code 0622 149 00106. 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 stabilise 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 stabilised 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.

• Use only original spare-parts listed in the Service-Manuals.

Not listed standard material (commodities) has to be

purchased at external companies.

• Special information for lead-free BGA ICs: these ICs will be

delivered in so-called "dry-packaging" to protect the IC

against moisture. This packaging may only be opened

shortly before it is used (soldered). Otherwise the body of

the IC gets "wet" inside and during the heating time the

structure of the IC will be destroyed due to high (steam-)

pressure inside the body. If the packaging was opened

before usage, the IC has to be heated up for some hours

(around 90°C) for drying (think of ESD-protection!).

Do not re-use BGAs at all!

• For sets produced before 1.1.2005, containing leaded

soldering tin and components, all needed spare parts will

be available till the end of the service period. For the repair

of such sets nothing changes.

In case of doubt whether the board is lead-free or not (or with

mixed technologies), you can use the following method:

• Always use the highest temperature to solder, when using

SAC305 (see also instructions below).

• De-solder thoroughly (clean solder joints to avoid the

mixing of two alloys).

Caution: For BGA-ICs, you must use the correct temperature

profile, which is coupled to the 12NC. For an overview of these

profiles, visit the website www.atyourservice.ce.philips.com

(needs subscription, but is not available for all regions).

You will find this and more technical information within the

"Magazine", chapter "Workshop information".

For additional questions please contact your local repair help

desk.

2.3.5 Practical Service Precautions

• It makes sense to avoid exposure to electrical shock.

While some sources are expected to have a possible

dangerous impact, others of quite high potential are of

limited current and are sometimes held in less regard.

• Always respect voltages. While some may not be

dangerous in themselves, they can cause unexpected

reactions that are best avoided. Before reaching into a

powered TV set, it is best to test the high voltage insulation.

It is easy to do, and is a good service precaution.

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Directions for Use

EN 7LC4.8A AA 3.

3. Directions for Use

You can download this information from the following websites:

http://www.philips.com/support

http://www.p4c.philips.com

Mechanical Instructions

EN 8 LC4.8A AA4.

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.

• Follow the disassembling instructions in described order.

4.1 Cable Dressing

Figure 4-1 Cable dressing

4.2 Service Positions

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

created:

• The buffers from the packaging (see figure "Rear cover").

• Foam bars (created for service).

• Aluminium service stands (created for Service).

4.2.1 Foam Bars

Figure 4-2 Foam bars

The foam bars (order code 3122 785 90580 for two pieces) can

be used for all types and sizes of Flat TVs. 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.

4.2.2 Aluminium Stands

Figure 4-3 Aluminium stands (drawing of MkI)

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Mechanical Instructions

EN 9LC4.8A AA 4.

The aluminium stands (order code 3122 785 90480) can be

mounted with the back cover removed or still left on. So, the

stand can be used to store products or to do measurements. It

is also very suitable to perform duration tests without taking

much space, without having the risk of overheating, or the risk

of products falling. The stands can be mounted and removed

quick and easy with use of the delivered screws that can be

tightened and loosened manually without the use of tools. See

figure above.

Note: Only use the delivered screws to mount the monitor to

the stands.

4.3 Assy/Panel Removal

4.3.1 Rear Cover

Figure 4-4 Rear cover

Warning: Disconnect the mains power cord before you remove

the rear cover.

1. Remove the screws that secure the rear cover (see Figure

“Rear cover screws”); these are:

a) 4 x big torx screws (1) for securing the stand/wall mount;

b) 5 x small torx screws (2) near the rear I/O panel;

c) 22 x small torx screws (3) that secure the loudspeaker

compartments [6 of these screws are in sunken holes (4) ]

and along the edges of the rear cover.

2. Lift the rear cover from the cabinet cautiously. Make sure

that wires and other internal components are not damaged

during cover removal.

4.3.2 Side I/O Panel

Figure 4-5 Side I/O panel

1. Disconnect the cable (1) from the panel.

2. Remove the fixation screw (2) and lift the panel out of its

brackets.

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Mechanical Instructions

EN 10 LC4.8A AA4.

4.3.3 LED Panel

Figure 4-6 LED panel

1. Remove the fixation screws (1) and take the panel out of its

brackets.

2. Disconnect the cable (2) from the panel.

4.3.4 Keyboard Control Panel

Figure 4-7 Keyboard control panel

1. Remove the panel (1) from its brackets (2).

2. Disconnect the cable (3) from the panel.

4.3.5 SSB Board Cover Shield

Figure 4-8 SSB cover shield

Figure 4-9 VGA connector and rear I/O panel screws

1. Very cautiously disconnect the LVDS cable (1) from the

SSB panel (see Figure “SSB board cover shield”). Notice

that this cable is very fragile.

2. Remove all other cables (2) from the SSB board (see

Figure “SSB board cover shield”).

3. Remove the fixation screws (3), see Figure “SSB board

cover shield” and remove the SSB shield with the SSB

board inside, and the rear I/O panel still attached to it.

4. Remove the fixation screws (3) from the VGA connector

and from the rear panel, see Figure “VGA connector and

rear panel screws”, and remove the rear I/O panel from the

SSB board.

5. Remove the upper part of the shield from the SSB panel,

by unhooking it from its brackets. Be careful not to damage

the LVDS connector on the SSB board, see Figure “SSB

board cover shield”.

4.3.6 SSB

Figure 4-10 SSB

1. Remove the two fixation screws (1) that secure the SSB

board on the lower part of the SSB shielding, see Figure

“SSB”.

2. Remove the SSB panel.

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Mechanical Instructions

EN 11LC4.8A AA 4.

4.3.7 Power Supply Panel

Figure 4-11 Power supply panel

1. Disconnect all cables (1) from the panel.

2. Remove the fixation screws (2) from the panel.

3. Take the panel out of its brackets.

4.3.8 Class D Audio Amplifier/STBY Power Supply Panel

Figure 4-12 Class D audio amplifier/STBY power supply panel

1. Disconnect all cables (1) from the panel.

2. Remove the fixation screws (2) from the panel.

3. Take the panel out of its brackets.

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Mechanical Instructions

EN 12 LC4.8A AA4.

4.3.9 LCD Panel

Figure 4-13 “L” and “R” loudspeaker cables and cable clamps

Figure 4-14 LVDS connector

Figure 4-15 LCD panel fixation screws

Figure 4-16 LCD panel connector

Figure 4-17 LCD panel

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Mechanical Instructions

EN 13LC4.8A AA 4.

To remove the LCD-panel, carry out the following steps:

1. Disconnect the cables (1) from the “L” and the “R”

loudspeakers and remove the cables from their cable

clamps (1, see Figure “L” and “R” loudspeaker cables and

cable clamps”).

2. Important: Unplug the LVDS connector (1) on the LCD

panel (see Figure “LVDS connector”).

Be careful, as this is a very fragile connector!

3. Unplug the connectors (1) from the Side I/O panel and from

the LED panel and remove the cables from their cable

clamps (see Figures “Side I/O panel” and “LED panel” at

the beginning of this chapter).

4. Take the Keyboard Control panel out of its brackets and

remove the Keyboard Control cable from its cable clamp

(see Figure “Keyboard Control panel” at the beginning of

this chapter).

5. Remove the fixation screws from the LCD panel (see

Figure “LCD panel fixation screws”; the two types of torx

screws, 6 small ones and 4 large ones, are indicated by the

two screwdrivers).

6. Unplug the connector of the LCD panel flatcable, at the “R”

speaker side of the TV set, from connector 1316 on the

lower left side of the Class D audio amplifier/STBY power

supply panel (see Figure “Class D audio amplifier/STBY

power supply panel”).

7. Lift the “L” speaker side of the metal frame 10 cm from the

LCD panel and hold it in this position. Now, loosen the LCD

flatcable and the “L” loudspeaker cable from their clamps,

and disconnect the LCD flatcable connector from the LCD

panel (see Figure “LCD panel connector”).

8. Lift the metal frame (together with all PWBs) from the LCD

panel.

Take care not to damage the fragile LVDS cable.

9. After removal of the metal frame, you can lift the LCD panel

(1) from its plastic frame (see Figure “LCD panel”).

10. If the plastic frame is damaged, replace it by a new frame,

after removing the loudspeakers, the Side I/O panel, the

Keyboard Control panel, and the LED panel.

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 positions. See Figure "Cable

dressing". Be careful with the fragile LVDS cable.

Service Modes, Error Codes, and Fault Finding

EN 14 LC4.8A AA5.

5. Service Modes, Error Codes, and Fault Finding

Index of this chapter:

5.1 Test Points

5.2 Service Modes

5.3 Problems and Solving Tips Related to CSM

5.4 Service Tools

5.5 Error Codes

5.6 The Blinking LED Procedure

5.7 Fault Finding and Repair Tips

5.1 Test Points

This chassis is equipped with test points in the service printing.

In the schematics test points are identified with a rectangle box

around Fxxx or Ixxx.

Perform measurements under the following conditions:

• Television set in Service Default Alignment Mode.

• Video input: Colour bar signal.

• Audio input: 3 kHz left channel, 1 kHz right channel.

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 possibilities of structured troubleshooting, error code

reading, and software version readout for all chassis.

Minimum requirements for ComPair: a Pentium processor, a

Windows OS, and a CD-ROM drive (see also paragraph

"ComPair").

5.2.1 Service Default Mode (SDM)

Purpose

• To create a predefined setting for measurements to be

made.

• To override software protections.

• To start the blinking LED procedure.

• To inspect the error buffer.

• To check the life timer.

Specifications

• Tuning frequency: 61.25 MHz.

• Colour system: NTSC.

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

hue).

• Bass, treble, and balance at 50 %; volume at 25 %.

• All service-unfriendly modes (if present) are disabled. The

service unfriendly modes are:

– Timer / Sleep timer.

– Child / parental lock.

–Blue mute.

– Hotel / hospital mode.

– Auto shut off (when no “IDENT” video signal is

received for 15 minutes).

– Skipping of non-favourite presets / channels.

– Auto-storage of personal presets.

– Auto user menu time-out.

– Auto Volume Levelling (AVL).

How to Enter

To enter SDM, use one of the following methods:

• Press the following key sequence on the remote control

transmitter: “062596” directly followed by the MENU button

(do not allow the display to time out between entries while

keying the sequence).

• Short "Service" jumpers on the TV board during cold start

and apply mains (see Figure "Service jumpers"). Then

press the mains button (remove the short after start-up).

Caution: Entering SDM by shorting "Service" jumpers will

override the +8V-protection. Do this only for a short period.

When doing this, the service-technician must know exactly

what he is doing, as it could damage the television set.

• Or via ComPair.

Figure 5-1 Service jumpers

After entering SDM, the following screen is visible, with SDM in

the upper right corner of the screen to indicate that the

television is in Service Default Mode.

Figure 5-2 SDM menu

F_15270_053.eps

180505

00035 LC4XAP1 1.15/S4XPVX 1.23 SDM

ERR 0 0 0 0 0

OP 000 057 140 032 120 128 000

F_15420_052.eps

180705

Service Modes, Error Codes, and Fault Finding

EN 15LC4.8A AA 5.

How to Navigate

Use one of the following methods:

• When you press the MENU button on the remote control,

the set will switch on the normal user menu in the SDM

mode.

• On the TV, press and hold the VOLUME DOWN and press

the CHANNEL DOWN for a few seconds, to switch from

SDM to SAM and reverse.

How to Exit

Switch the set to STANDBY by pressing the mains button on

the remote control transmitter or the television set.

If you turn the television set off by removing the mains (i.e.,

unplugging the television) without using the mains button, the

television set will remain in SDM when mains is re-applied, and

the error buffer is not cleared.

5.2.2 Service Alignment Mode (SAM)

Purpose

• To change option settings.

• To display / clear the error code buffer.

• To perform alignments.

Specifications

• Operation hours counter (maximum five digits displayed).

• Software version, Error codes, and Option settings display.

• Error buffer clearing.

• Option settings.

• AKB switching.

• Software alignments (Tuner, White Tone, Geometry &

Audio).

• NVM Editor.

• ComPair Mode switching.

How to Enter

To enter SAM, use one of the following methods:

• Press the following key sequence on the remote control

transmitter: “062596" directly followed by the OSD/

STATUS/INFO(I+) button (do not allow the display to time

out between entries while keying the sequence).

• Or via ComPair.

After entering SAM, the following screen is visible, with SAM in

the upper right corner of the screen to indicate that the

television is in Service Alignment Mode.

Figure 5-3 SAM menu

Menu Explanation

1. LLLLL. This represents the run timer. The run timer counts

normal operation hours, but does not count standby hours.

2. AAABCD-X.Y. This is the software identification of the

main microprocessor:

– A= the project name (LC04.x).

– B= the region: E= Europe, A= Asia Pacific, U= NAFTA,

L= LATAM.

– C= the software diversity:

• Europe: T= 1 page TXT, F= Full TXT, V= Voice

control.

• LATAM and NAFTA: N= Stereo non-dBx, S=

Stereo dBx.

• Asian Pacific: T= TXT, N= non-TXT, C= NTSC.

• ALL regions: M= mono, D= DVD, Q= Mk2.

– D= the language cluster number.

– X= the main software version number (updated with a

major change that is incompatible with previous

versions).

– Y= the sub software version number (updated with a

minor change that is compatible with previous

versions).

3. EEEEE-F.GG. This is the software identification of the

Scaler:

– EEEEEE= the scaler sw cluster

– F= the main sw version no.

– GG= the sub-version no.

4. SAM. Indication of the Service Alignment Mode.

5. Error Buffer. Shows all errors detected since the last time

the buffer was erased. Five errors possible.

6. Option Bytes. Used to set the option bytes. See “Options”

in the Alignments section for a detailed description. Seven

codes are possible.

7. Clear. Erases the contents of the error buffer. Select the

CLEAR menu item and press the MENU RIGHT key. The

content of the error buffer is cleared.

8. Options. Used to set the option bits. See “Options” in the

Alignments section for a detailed description.

9. Tuner. Used to align the tuner. See “Tuner” in the

Alignments section for a detailed description.

10. White Tone. Used to align the white tone. See “White

Tone” in the Alignments section for a detailed description.

11. Audio. No audio alignment is necessary for this television

set.

12. NVM Editor. Can be used to change the NVM data in the

television set. See table “NVM data” further on.

13. SC NVM Editor. Can be used to edit Scaler NVM.

14. ComPaIr. Can be used to switch on the television to In

System Programming (ISP) mode, for software uploading

via ComPair.

Caution: When this mode is selected without ComPair

connected, the TV will be blocked. Remove the AC power

to reset the TV.

How to Navigate

• In SAM, select menu items with the MENU UP/DOWN keys

on the remote control transmitter. The selected item will be

highlighted. When not all menu items fit on the screen, use

the MENU UP/DOWN keys to display the next / previous

menu items.

• With the MENU LEFT/RIGHT keys, it is possible to:

– Activate the selected menu item.

– Change the value of the selected menu item.

– Activate the selected submenu.

• In SAM, when you press the MENU button twice, the set

will switch to the normal user menus (with the SAM mode

still active in the background). To return to the SAM menu

press the MENU or STATUS/EXIT button.

• When you press the MENU key in while in a submenu, you

will return to the previous menu.

F_15420_053.eps

180705

00035 LC4XAP1 1.15/S4XPVX 1.23 SAM

ERR 0 0 0 0 0

OP 000 057 140 032 120 128 000

. Clear Clear ?

. Options

. Tuner

. White Tone

. Audio

. NVM Editor

. SC NVM Editor

. ComPair Mode On

Service Modes, Error Codes, and Fault Finding

EN 16 LC4.8A AA5.

How to Store SAM Settings

To store the settings changed in SAM mode, leave the top level

SAM menu by using the POWER button on the remote control

transmitter or the television set.

How to Exit

Switch the set to STANDBY by pressing the mains button on

the remote control transmitter or the television set.

If you turn the television set “off” by removing the mains (i.e.,

unplugging the television) without using the mains button, the

television set will remain in SAM when mains is re-applied, and

the error buffer is not cleared.

5.2.3 Customer Service Mode (CSM)

Purpose

The Customer Service Mode shows error codes and

information on the TV’s operation settings. The call centre can

instruct the customer (by telephone) to enter CSM in order to

identify the status of the set. This helps the call centre to

diagnose problems and failures in the TV set before making a

service call.

The CSM is a read-only mode; therefore, modifications are not

possible in this mode.

How to Enter

To enter CSM, press the following key sequence on the remote

control transmitter: “123654” (do not allow the display to time

out between entries while keying the sequence).

Upon entering the Customer Service Mode, the following

screen will appear:

Figure 5-4 CSM menu

Menu Explanation

1. Indication of the decimal value of the operation hours

counter, Software identification of the main microprocessor

(see "Service Default or Alignment Mode" for an

explanation), and the service mode (CSM = Customer

Service Mode).

2. Displays the last five errors detected in the error code

buffer.

3. Displays the option bytes.

4. Displays the type number version of the set.

5. Reserved item for P3C call centres (AKBS stands for

Advanced Knowledge Base System).

6. Indicates the television is receiving an "IDENT" signal on

the selected source. If no "IDENT" signal is detected, the

display will read "NOT TUNED"

7. Displays the detected Colour system (e.g. PAL/NTSC).

8. Displays the detected Audio (e.g. stereo/mono).

9. Displays the picture setting information.

10. Displays the sound setting information.

How to Exit

To exit CSM, use one of the following methods:

• Press the MENU, STATUS/EXIT, or POWER button on the

remote control transmitter.

• Press the POWER button on the television set.

5.3 Problems and Solving Tips Related to CSM

5.3.1 Picture Problems

Note: The problems described below are all related to the TV

settings. The procedures used to change the value (or status)

of the different settings are described.

Picture too Dark or too Bright

If:

• The picture improves when you press the AUTO PICTURE

button on the remote control transmitter, or

• The picture improves when you enter the Customer

Service Mode,

Then:

1. Press the AUTO PICTURE button on the remote control

transmitter repeatedly (if necessary) to choose

PERSONAL picture mode.

2. Press the MENU button on the remote control transmitter.

This brings up the normal user menu.

3. In the normal user menu, use the MENU UP/DOWN keys

to highlight the PICTURE sub menu.

4. Press the MENU LEFT/RIGHT keys to enter the PICTURE

sub menu.

5. Use the MENU UP/DOWN keys (if necessary) to select

BRIGHTNESS.

6. Press the MENU LEFT/RIGHT keys to increase or

decrease the BRIGHTNESS value.

7. Use the MENU UP/DOWN keys to select PICTURE.

8. Press the MENU LEFT/RIGHT keys to increase or

decrease the PICTURE value.

9. Press the MENU button on the remote control transmitter

twice to exit the user menu.

10. The new PERSONAL preference values are automatically

stored.

White Line around Picture Elements and Text

If:

The picture improves after you have pressed the AUTO

PICTURE button on the remote control transmitter,

Then:

1. Press the AUTO PICTURE button on the remote control

transmitter repeatedly (if necessary) to choose

PERSONAL picture mode.

2. Press the MENU button on the remote control transmitter.

This brings up the normal user menu.

3. In the normal user menu, use the MENU UP/DOWN keys

to highlight the PICTURE sub menu.

4. Press the MENU LEFT/RIGHT keys to enter the PICTURE

sub menu.

5. Use the MENU UP/DOWN keys to select SHARPNESS.

6. Press the MENU LEFT key to decrease the SHARPNESS

value.

7. Press the MENU button on the remote control transmitter

twice to exit the user menu.

8. The new PERSONAL preference value is automatically

stored.

1 00035 LC4XAP1 1.15/S4XPVX 1.23 CSM

2 CODES 0 0 0 0 0

3 OP 000 057 140 032 120 128 000

6 NOT TUNED

7 PAL

8 STEREO

9 CO 50 CL 50 BR 50

0 AVL Off

E_15420_054.eps

180705

Service Modes, Error Codes, and Fault Finding

EN 17LC4.8A AA 5.

Snowy Picture

Check CSM line 6. If this line reads “Not Tuned”, check the

following:

• Antenna not connected. Connect the antenna.

• No antenna signal or bad antenna signal. Connect a proper

antenna signal.

• The tuner is faulty (in this case line 2, the Error Buffer line,

will contain error number 10). Check the tuner and replace/

repair the tuner if necessary.

Black and White Picture

If:

• The picture improves after you have pressed the AUTO

PICTURE button on the remote control transmitter,

Then:

1. Press the AUTO PICTURE button on the remote control

transmitter repeatedly (if necessary) to choose

PERSONAL picture mode.

2. Press the MENU button on the remote control transmitter.

This brings up the normal user menu.

3. In the normal user menu, use the MENU UP/DOWN keys

to highlight the PICTURE sub menu.

4. Press the MENU LEFT/RIGHT keys to enter the PICTURE

sub menu.

5. Use the MENU UP/DOWN keys to select COLOR.

6. Press the MENU RIGHT key to increase the COLOR value.

7. Press the MENU button on the remote control transmitter

twice to exit the user menu.

8. The new PERSONAL preference value is automatically

stored.

Menu Text not Sharp Enough

If:

• The picture improves after you have pressed the AUTO

PICTURE button on the remote control transmitter,

Then:

1. Press the AUTO PICTURE button on the remote control

transmitter repeatedly (if necessary) to choose

PERSONAL picture mode.

2. Press the MENU button on the remote control transmitter.

This brings up the normal user menu.

3. In the normal user menu, use the MENU UP/DOWN keys

to highlight the PICTURE sub menu.

4. Press the MENU LEFT/RIGHT keys to enter the PICTURE

sub menu.

5. Use the MENU UP/DOWN keys to select PICTURE.

6. Press the MENU LEFT key to decrease the PICTURE

value.

7. Press the MENU button on the remote control transmitter

twice to exit the user menu.

8. The new PERSONAL preference value is automatically

stored.

5.4 Service Tools

5.4.1 ComPair

Introduction

ComPair (Computer Aided Repair) is a service tool for Philips

Consumer Electronics products. ComPair is a further

development on the European DST (service remote control),

which allows faster and more accurate diagnostics. ComPair

has three big advantages:

1. ComPair helps you to quickly get an understanding on how

to repair the chassis in a short time by guiding you

systematically through the repair procedures.

2. ComPair allows very detailed diagnostics (on I

C level) and

is therefore capable of accurately indicating problem areas.

You do not have to know anything about I

C commands

yourself because ComPair takes care of this.

3. ComPair speeds up the repair time since it can

automatically communicate with the chassis (when the

microprocessor is working) and all repair information is

directly available. When ComPair is installed together with

the Force/SearchMan electronic manual of the defective

chassis, schematics and PWBs are only a mouse click

away.

Specifications

ComPair consists of a Windows based fault finding program

and an interface box between PC and the (defective) product.

The ComPair interface box is connected to the PC via a serial

(or RS-232) cable.

For this chassis, the ComPair interface box and the TV

communicate via a bi-directional service cable via the service

connector(s).

The ComPair faultfinding program is able to determine the

problem of the defective television. ComPair can gather

diagnostic information in two ways:

• Automatically (by communicating with the television):

ComPair can automatically read out the contents of the

entire error buffer. Diagnosis is done on I

C/UART level.

ComPair can access the I

C/UART bus of the television.

ComPair can send and receive I

C/UART commands to

the microcontroller of the television. In this way, it is

possible for ComPair to communicate (read and write) to

devices on the I

C/UART buses of the TV-set.

• Manually (by asking questions to you): Automatic

diagnosis is only possible if the microcontroller of the

television is working correctly and only to a certain extent.

When this is not the case, ComPair will guide you through

the faultfinding tree by asking you questions (e.g. Does the

screen give a picture? Click on the correct answer: YES /

NO) and showing you examples (e.g. Measure test-point I7

and click on the correct oscillogram you see on the

oscilloscope). You can answer by clicking on a link (e.g.

text or a waveform picture) that will bring you to the next

step in the faultfinding process.

By a combination of automatic diagnostics and an interactive

question / answer procedure, ComPair will enable you to find

most problems in a fast and effective way.

How to Connect

This is described in the chassis faultfinding database in

ComPair.

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

shown in the picture below (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!

Figure 5-5 ComPair interface connection

How to Order

• ComPair order codes (EU/AP/LATAM):

E_06532_021.eps

180804

PC VCR I

CPower

9V DC

UART SERVICE

CONNECTOR

C SERVICE

CONNECTOR

Service Modes, Error Codes, and Fault Finding

EN 18 LC4.8A AA5.

• Starter kit ComPair32/SearchMan32 software and

ComPair interface (excl. transformer): 3122 785 90450.

• ComPair interface (excl. transformer): 4822 727 21631.

• Starter kit ComPair32 software (registration version): 3122

785 60040.

• Starter kit SearchMan32 software: 3122 785 60050.

• ComPair32 CD (update): 3122 785 60070 (year 2002),

3122 785 60110 (year 2003 onwards).

• SearchMan32 CD (update): 3122 785 60080 (year 2002),

3122 785 60120 (year 2003), 3122 785 60130 (year 2004).

• ComPair firmware upgrade IC: 3122 785 90510.

• Transformer (non-UK): 4822 727 21632.

• Transformer (UK): 4822 727 21633.

• ComPair interface cable: 3122 785 90004.

• ComPair interface extension cable: 3139 131 03791.

• ComPair UART interface cable: 3122 785 90630.

Note: If you encounter any problems, contact your local

support desk.

5.4.2 LVDS Tool

Introduction

This service tool (also called “ComPair Assistant 1“) may help

you to identify, in case the TV does not show any picture,

whether the Small Signal Board (SSB) or the display of a Flat

TV is defective.

Furthermore it is possible to program EPLDs with this tool

(Byteblaster). Read the user manual for an explanation of this

feature.

Since 2004, the LVDS output connectors in our Flat TV models

are standardised (with some exceptions). With the two

delivered LVDS interface cables (31p and 20p) you can cover

most chassis (in special cases, an extra cable will be offered).

When operating, the tool will show a small (scaled) picture on

a VGA monitor. Due to a limited memory capacity, it is not

possible to increase the size when processing high-resolution

LVDS signals (>= 1280x768). Generally this tool is intended to

determine if the SSB is working or not. Thus to determine if

LVDS, RGB, and sync signals are okay.

How to Connect

Connections are explained in the user manual, which is

delivered with the tool.

Note: To use the LVDS tool, you must have ComPair release

2004-1 (or later) on your PC (engine version >= 2.2.05).

For every TV type number and screen size, one must choose

the proper settings via ComPair. The ComPair file will be

updated regularly with new introduced chassis information.

How to Order

• LVDS tool (incl. two LVDS cables: 31p and 20p):

3122 785 90671.

• Service Manual LVDS tool:

3122 785 00810.

• LVDS cable 20p (for Telra 14-inch):

3122 785 90810.

• LVDS cable 30p (for LC4.3):

3122 785 90820.

• LVDS cable 41p-to-31p for CA1 (dual -> single LVDS):

3122 785 90830.

5.5 Error Codes

The error code buffer contains all errors detected since the last

time the buffer was erased. The buffer is written from left to

right. When an error occurs that is not yet in the error code

buffer, it is displayed at the left side and all other errors shift one

position to the right.

5.5.1 How to Read the Error Buffer

You can read the error buffer in 3 ways:

• On screen via the SAM (if you have a picture).

Examples:

– ERROR: 0 0 0 0 0 : No errors detected

– ERROR: 6 0 0 0 0 : Error code 6 is the last and only

detected error

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

error code 9 is the last detected (newest) error

• Via the blinking LED procedure (when you have no

picture). See “The Blinking LED Procedure”.

•Via ComPair.

5.5.2 How to Clear the Error Buffer

The error code buffer is cleared in the following cases:

• By using the CLEAR command in the SAM menu:

– To enter SAM, press the following key sequence on the

remote control transmitter: “062596” directly followed

by the OSD/STATUS button (do not allow the display

to time out between entries while keying the

sequence).

– Make sure the menu item CLEAR is highlighted. Use

the MENU UP/DOWN buttons, if necessary.

– Press the MENU RIGHT button to clear the error

buffer. The text on the right side of the “CLEAR” line will

change from “CLEAR?” to “CLEARED”

• If the contents of the error buffer have not changed for 50

hours, the error buffer resets automatically.

Note: If you exit SAM by disconnecting the mains from the

television set, the error buffer is not reset.

Service Modes, Error Codes, and Fault Finding

EN 19LC4.8A AA 5.

5.5.3 Error Codes

In case of non-intermittent faults, write down the errors present

in the error buffer and clear the error buffer before you begin

the repair. This ensures 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

and not the actual cause of the problem (for example, a fault in

the protection detection circuitry can also lead to a protection).

Table 5-1 Error code overview

5.6 The Blinking LED Procedure

Using this procedure, you can make the contents of the error

buffer visible via the front LED. This is especially useful when

there is no picture.

When the SDM is entered, the front LED will blink the contents

of the error-buffer:

• The LED blinks 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.

Any RC5 command terminates this sequence.

Example of error buffer: 12 9 6 0 0

After entering SDM, the following occurs:

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

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

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

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

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

• The sequence starts again with 12 short blinks.

5.7 Fault Finding and Repair Tips

Notes:

• It is assumed that the components are mounted correctly

with correct values and no bad solder joints.

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

are set.

5.7.1 NVM Editor

In some cases, it can be handy if one directly can change the

NVM contents. This can be done with the “NVM Editor” in SAM

mode. With this option, single bytes can be changed.

Caution:

• Do not change the NVM settings without

understanding the function of each setting, because

incorrect NVM settings may seriously hamper the

correct functioning of the TV set!

• Do not change the Scaler NVM settings, as this will

hamper the DVI functionality of the TV set!

• Always note down the existing NVM settings, before

changing the settings. This will enable you to return to the

orgininal settings, if the new settings turn out to be

incorrect.

Table 5-2 NVM editor overview

Error Device Error Description Check Item Diagram

0 Not applicable No Error

1 Not applicable Mis-match of TV

Hercules SW and

Scaler SW

2 Not applicable - - -

3 Not applicable - - -

4 Genesis Scaler

Flash-ROM

C error while

communicating with

the Genesis Scaler

and/or Flash-ROM

is faulty/empty

7801

7B01

B7 + B8

B10

5 Scaler supply

7752

+5V protection 7752 B6

6 Not applicable General I

C error 1102, 7L04, 7M00 B1 + B18

+ B19

7ADC I

C error 7L04 B18

8 Scaler EEPROM I

C error while

communicating with

the Scaler

EEPROM

7C01 B11

9 Hercules

EEPROM

C error while

communicating with

the Hercules

EEPROM (NVM for

TV).

Remark: when the

Hercules EEPROM

is defective, the

Hercules should

operate with its

default values.

7207 B2

10 Tuner I

C error while

communicating with

the PLL tuner

1102, F102, F104,

F107

11 Columbus I

C error while

communicating with

the 2D/3D

combfilter

Columbus

7M00 B19

12 Not applicable - - -

13 HDMI Panellink

Receiver/

Decoder

C error while

communicating with

the iBoard HDMI

Panellink Receiver/

Decoder (only in

NAFTA and AP

sets)

7D03 B12

(only in

NAFTA

and AP

sets)

14 Scaler SDRAM Read-write error

with the Scaler

SDRAM

7B01 B10

15 Not applicable - - -

16 EPLD I

C error while

communicating with

EPLD

7N02 B20 +

B21

17 Digital Module

(only on Digital

sets)

C error while

communicating with

the Digital Module

(only on Digital

sets)

Digital Module

(only on Digital

sets)

18 Not applicable - - -

Hex Dec Description

.ADR 0x000A 10 Existing value

.VAL 0x0000 0 New value

.Store Store?

Service Modes, Error Codes, and Fault Finding

EN 20 LC4.8A AA5.

Table 5-3 NVM Default values (option bit settings through NVM Editor in SAM Mode)

Byte Nr. Bit Feature/Mode Description

37PF7320/69 /79 /93 /98

42PF7420/69 /79 /93 /98

Byte 0

174(dec)

0 QSS (LSB) Mode of quasi split sound amplifier 1 1

1 FMI Connection of output of QSS amplifier 1 1

2 HCO EHT tracking mode 0 0

3 HP2 Synchronization of OSD/Text display 1 1

4 FSL Forced slicing level for vertical sync 1 1

5 TFR DC transfer ratio of luminance signal 1 1

6 OSVE Black current measuring in overscan 0 0

7 MVK (MSB) (For Future Usage, as defined by software) 0 0

Total Dec Values 59 59

Total Hex Values 3B 3B

Byte 1

175(dec)

0 PSE PSE 0 0

1OPC OPC 0 0

2PRIS PRIS 0 0

3 CONTINUOUS FACTORY Continuous factory mode 0 0

4 WHITE PATTERN ON Last color pattern status in factory mode 0 0

5 SDM MODE Service default mode on/off 0 0

6 SAM MODE Service Align mode on/off 0 0

7 SVMA Scavm On / Off 0 0

Total Dec Values 0 0

Total Hex Values 00 00

Byte 2

176(dec)

0 MUTE STATUS Mute status 0 0

1 TUNER AUTO MODE Auto mode 1 1

2 CABLE MODE Cable/Antenna mode 0 0

3 LAST POWER MODE Last power status of the set 1 1

4 CHILD LOCK MODE Child lock enabled 0 0

5 SURF MODE Surf mode on/off 0 0

6 FACTORY MODE Factory mode on 0 0

7 PSNS For PAL color enhancement in ES4 1 1

Total Dec Values 138 138

Total Hex Values 8A 8A

Byte 3

177(dec)

0 RADIO/TV MODE Radio mode or TV mode 0 0

1 WAKE-UP MODE WAKE-UP MODE 0 0

2 HOTEL MODE TV in Hotel mode 0 0

3 HOTEL KBD LOCK Keyboard locked 0 0

4HBL HBL 0 0

5 BLS Blue stretch mode 1 1

6SL SL 0 0

7 CFA0 Comb filter On/Off 1 1

Total Dec Values 160 160

Total Hex Values A0 A0

Service Modes, Error Codes, and Fault Finding

EN 21LC4.8A AA 5.

5.7.2 Load Default NVM Values

In case a blank NVM is placed or when the NVM content is

corrupted, default values can be downloaded into the NVM.

(For empty NVM replacement, short the SDM with a jumper

and apply the mains voltage. Remember to remove the jumper

after the reload is completed). After the default values are

downloaded, it will be possible to start up and to start aligning

the TV set. This is no longer initiated automatically; to initiate

the download the following action has to be performed:

1. Switch “off” the TV set by disconnecting the AC Power

plug.

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

3. Press P+ or Ch+ on the local keyboard (and keep it

pressed).

4. Switch on the TV set via the AC Power plug.

5. Keep pressing the P+/Ch+ button until the set has started

up and the SDM is shown.

Alternative method:

1. Go to SAM.

2. Select NVM Editor (not SC NVM Editor).

3. Select ADR (address) to 1 (dec).

4. Change the VAL (value) to 170 (dec).

5. Store the value.

6. Disconnect the mains plug and wait for a few seconds.

7. Reconnect the mains plug and wait until the set goes into

its standby mode (red LED lights up).

8. Restart the set.

Byte 4

178(dec)

0 Signal Strength Signal Strength Switch in MK2 0 0

1LPG LPG 0 0

2 DVD TRAY LOCK Lock/Unlock DVD tray 0 0

3 SCRSAVER MODE Screen saver mode 1 1

4 BKS Black Stretch Mode 1 1

5 BSD Black Stretch Depth 1 1

6 CRA0 Coring on SVM 1 1

7 PIP QSS PIP QSS 0 0

Total Dec Values 120 120

Total Hex Values 78 78

Byte 5

179(dec)

0 FFI Fast Filter 0 0

1 NNR No red reduction during blue stretch 1 1

2 MUS NTSC matrix 1 1

3 GAM Gamma control 1 1

4 CBS Control sequence of beam current limiting 0 0

5 LLB Low level of beam current limiter 0 0

6 DSA Dynamic skin tone angle area 1 1

7 DSK Dynamic skin tone angle on/ off 0 0

Total Dec Values 78 78

Total Hex Values 4E 4E

Byte 6

180(dec)

0 LTI status LTI last status 1 1

1 Inc_Life_Time Inc_Life_Time 0 0

2 PC_Mode PC_Mode 0 0

3 HD_Mode HD_Mode 0 0

4 Tact_Switch Tact_Switch 0 0

5 Set_In_Special_Stby Set_In_Special_Stby 0 0

6 Hotel_OSDDisplay Hotel_OSDDisplay 0 0

7 Hotel_MonitorOut Hotel_MonitorOut 0 0

Total Dec Values 1 1

Total Hex Values 01 01

Byte 7

181(dec)

0 Hotel_IconMode Hotel_IconMode 0 0

1DBE DBE 1 1

2SD SD 0 0

3 Set_in_PC_Sleep_Mode Set_in_PC_Sleep_Mode 0 0

4 Reserved Reserved 0 0

5 Reserved Reserved 0 0

6 Reserved Reserved 0 0

7 Reserved Reserved 0 0

Total Dec Values 2 2

Total Hex Values 02 02

Byte Nr. Bit Feature/Mode Description

37PF7320/69 /79 /93 /98

42PF7420/69 /79 /93 /98

Service Modes, Error Codes, and Fault Finding

EN 22 LC4.8A AA5.

5.7.3 Tuner and IF

No Picture in RF Mode, but there is a Noise Raster

1. Check whether picture is present in AV. If not, go to Video

processing troubleshooting section.

2. If present, check if the Option settings are correct.

3. Check if all the supply voltages are present (3.3/5/8/12/33

V).

4. Check if the I

C lines are working correctly (3.3 V).

5. Manually store a known channel and check if there is IF

output at Tuner pin 11.

6. Check the tuning DC voltage at pin 2 of the Tuner. The DC

voltage should vary according to the frequency/channel

being chosen.

7. If the tuning voltage is OK, check the tuner output, pin 11.

8. If it has no output, the Tuner may have a defect. Change

the Tuner.

Sound in Picture Problem for L' System (rolling horizontal

lines)

1. Check whether AGC L' in SAM mode is set to 0.

2. If yes, align the set to correct value.

Required System is not Selected Correctly

Check whether a Service jumper (#4204 & 4205, 0805 size) is

present. If yes, remove it.

5.7.4 Video Processing

No Power

1. Check +12 V and 3V3 at position 1J02.

2. If no supply, check the connector 1J02.

3. If it is correct, check the power supply board.

Power Supply is Correct, but no Green LED

1. Check if the connectors 1K00 are properly inserted.

2. If they are inserted correctly, check if the 3V3 is present.

No Picture Display (blank screen with correct sound

output)

1. Check whether the user menu is visible.

2. If the user menu is OK, activate teletext mode.

3. If teletext is OK, the problem is in the ADC (B18) &

Columbus 3D combfilter (B19), if present (depending on

model, see also paragraph “Teletext Path” in chapter 9).

4. If the user menu is not visible, check if the LCD panel

backlight is ON.

5. If the backlight is OFF, the problem is in the power supply

board or LCD panel. Also check pin 12 (LAMP_ON_OFF)

of 1J02. It should be HIGH during normal operation.

Note: For faultfinding purposes, it is important to know the

following: in Pixel Plus and Digital Crystal Clear models, which

have an ADC (B18) and Columbus 3D combfilter (B19), the

digital input of the scaler is used for the digital video path

(Hercules output), whereas the analogue RGB input (analogue

input of the scaler) is only used for teletext. This means that no

mixed mode (video plus teletext simultaneously) is possible. If

there is sound and teletext, but no video and user menu (blank

screen), the digital path (Hercules - ADC - Columbus - Scaler)

is faulty. If there is sound but no teletext, the back-end part

(Scaler - LCD panel) is faulty. In Crystal Clear models, which

do not have an ADC and Columbus, the RGB path (analogue

input of scaler) is used for both video and teletext.

No TV, but PC is Present

1. Check if Hsync_SDTV and Vsync_SDTV are present at pin

1 & pin13 of 7E03.

2. If they are present, check teletext output.

3. If there is no teletext output, the IC TDA150xx may be

defect.

5.7.5 Power Supply

In case the power supply does not work, check (apart from the

obvious fuse-check) if the oscillators in IC7001 (in TV sets with

37 inch screens) or in IC7001 and IC7U01 (in TV sets with 42

inch screens) are working. If not, replace the ICs.

Block Diagrams, Testpoint Overviews, and Waveforms

23LC4.8A AA 6.

6. Block Diagrams, Testpoint Overviews, and Waveforms

Wiring Diagram 37” LCD

1J04(1M52)

1P06

31P

1J01(1M46)

11P

Tuner

1107

1K04(1M06)

11P

0345

1M36

11P

1M01

SSB

INVERTER

CONTROL BOARD

LED SWITCH

PANEL

LCD PANEL

AC INLET

8199

RIGHT

SPEAKER

LEFT

SPEAKER

F_15420_022.eps

140705

1K02

1304

1309

1305

12P

1736

2P3

1735

2P3

1738

2P3

1M02

1316

12P

1739

1317

12P

1309

1304

1306

2P3

1307

1305

1M03

10P

1M46

11P

1M10

MF + SUPPLY

1M02

1308

LVDS

8302

8736

INVERTER

12P

SIDE I/O

8735

8316

8306

8305

8317

8304

8309

8136

8120

8308

1K00(1M21)

1J00(1M03)

10P

8146

8103

8152

1306

8150

8101

1103

1101

Compair

UART

AUDIO & STANDBY

WIRING 37”

24LC4.8A AA 6.

Block Diagrams, Testpoint Overviews, and Waveforms

Wiring Diagram 42” LCD

1J04(1M52)

1P06

31P

1J01(1M46)

11P

Tuner

1107

1K04(1M06)

11P

1M20

1M36

11P

1M01

SSB

INVERTER

CONTROL BOARD

LED SWITCH

PANEL

LCD PANEL

AC INLET

RIGHT

SPEAKER

LEFT

SPEAKER

F_15420_048.eps

130705

1K02

1303

1320

1B06

12P

1736

2P3

1735

2P3

1738

2P3

1M02

1316

12P

1739

1317

12P

1320

1303

1306

2P3

1307

1305

1M03

10P

1M46

11P

1M10

MF + SUPPLY

1M02

1308

LVDS

8302

8736

INVERTER

12P

SIDE I/O

8735

8316

8306

8305

8317

8304

8309

8136

8120

1K00(1M21)

1J00(1M03)

10P

8146

8103

8152

1306

2P3

8150

8101

1103

1101

Compair

UART

AUDIO & STANDBY

1304

1309

1307

1305

1C05

1309

1304

8303

8320

8307

8308

1420

WIRING 42”

Block Diagrams, Testpoint Overviews, and Waveforms

25LC4.8A AA 6.

Block Diagram Video

TUNER & VIF

B23

CINCH ANALOGUE IO

HERCULES

B22

DIGITAL IO

B13

MUX-SYNC INTERFACE

SCALER

B11

FLASH/CONTROL

B10

SDRAM

SYNC INTERFACE

VIDEO

B18

HISTO-

GRAM

B17

SIDE

CONNECTIONS

SIDE AV

B19

COLUMBUS

(Dig. PAL/NTC Comb)

B20

EPLD

B21

EPLD

HERCULES

B12

HDMI

1102

UV1318SD

TUNER

2106

1104

VIF1

VIF2

3104

RF_AGC

SCL

SDA

AGC

Detect

SC2_Y_IN

SC2_Y_IN_1

SC2_C_IN

SC2_CVBS_MON_OUT

77 78 79 80

7208

R_SDTV

7209

G_SDTV

7210

B_SDTV

74 75 76 70 71 72

7E01

SC1_R_CVI_Pr_IN

SC1_G_CVI_Y_IN

SC1_B_CVI_Pb_IN

R_PR+

G_Y+

B_PB+

V_PC

H_PC

7E03

Vsync_SDTV

Hsync_SDTV

AVSYNC

AHSYNC

1Q03

ANALOG

INPUT

PORT

DVI/HDMI

INPUT

PORT

7B01

K4D263238F

SDRAM

1Mx32x4

FSDATA

FSADDR

7801

GM1501

GRAPHIC

ZOOM

DISPLAY

TIMING

GEN.

VIDEO

ZOOM

OSD CONTROLLER

OUT BLENDER

BRIGHTNESS/CONTRAST/HUE/SAT

EXTERNAL

ROM

INTERFACE

7C00

MX29LV040QC

FLASH

ROM

512Kx8

OCMDATA

OCMADDR

1P06

LVDS_VCC

TXB0-

TXB3+

TXB0+

TXB1-

TXB1+

TXBC+

TXBC-

TXB2-

TXB2+

TXB3-

RGB/Pr Pb Insert

YUV Interface

RGB Matrix

Blue & Black

Strech

Gamma Corr.

PAL/NTSC/

SECAM

Decoder &

Baseband

Delay

Sync Sep

H-OSC

H-Shift

H-Drive

Vertical &

East-West

Geometry

CVBS/Y

VDRB

H/V

HOUT

INSSW3

Chroma

Yint

R/Pr-3

G/Y3

B/Pb-3

YOUT

VOUT

UOUT

VIN

UIN

YIN

B_OSD

G_OSD

R_OSD

Fast Blanking

Peaking

SCAVEM

U/V Delay

Skin Tone

U/V Tint

Saturation

YUV

YUV in/out

SAT

SCAVEM

on text

Dig. 2H/4H

Combfilter

Y Delay Adj.

cvbs/y

Sound

Traps

Video

Switch

Control

Uint

Vint

CVBS1

BINA|Pb

GINA|YINA

RINA|Pr

RX0-

RX0+

RXC+

RXC-

RX1-

RX1+

RX2+

RX2-

FRAME

STORE

CONTROL

MICRO

CONTROLLER

UART

INTERFACE

INTERNAL

RAM

7E02

QSS Mixer

AM Demod.

QSS/FM

1106

SIF1

SIF2

F624

F625

F626

IF-TER

AE16

AF11

AF16

AF12

AE15

AF15

AE12

AF13

AE14

AF14

7217

TDA15021H

Vsync_SDTV

Hsync_SDTV

INTF_Y_OUT

INTF_U_OUT

INTF_V_OUT

SC1_B_CVI_Pb_IN

SC1_FBL_IN_1

SC1_R_CVI_Pr_IN

SC1_G_CVI_Y_IN

R_PR-ADC

G_Y-ADC

B_PB-ADC

PC_HD_DET

HDMI/PC-D

+5SW_a

+VTUN

7436-1

7436-2

N.C.

7L01

7L03

7L02

7L04

MST9883C

A/D

CONV.

COL_A

COL_D

7M00

T6TU5XBG

COLUMBUS

DIGITAL COMB

FILTER

DRAM

512Kx16x2

7M01

MSM56V16

+2V5_DDR

F_15420_049.eps

130705

SCL

SDA

COL_Do(1-7)

COL_YB(1-7)

7E00

SD_HD_SEL

10,11

SOG

BINA|Pb

GINA|YINA

RINA|Pr

1M36

1K04

SVHS

1001

1002

7206

7R57

FRONT_Y_CVBS_IN

FRONT_C_IN

SC2_AV3_C_IN

CVI_Pr_IN

CVI_Y_IN

CVI_Pb_IN

SC1_CV1_DMMI_R_Pr_IN

SC1_CV1_DMMI_G_Y_IN

SC1_CV1_DMMI_B_Pb_IN

B13

SC1_CV1_DMMI_R_Pr_IN

SC1_CV1_DMMI_G_Y_IN

SC1_CV1_DMMI_B_Pb_IN

B13

B23

B13

SC1_R_CVI_Pr_IN

SC1_G_CVI_Y_IN

SC1_B_CVI_Pb_IN

B2,B13

B13

B22

B13

B22

B13

7219

4R12

4R64

4R68

4R70

4R69

FRONT_YCVBS_IN

FRONT_C_IN

CVBS_COMB

SCALER

LVDS

INTERFACE

RECEIVER

7N04

THC63LVDF84B

TXB0-

TXB3+

TXB0+

TXB1-

TXB1+

TXBC+

TXBC-

TXB2-

TXB2+

TXB3-

LVDS

TRANS-

MITTER

7P02

THC63LVDM83R

EPLD

PIXEL+

PROCESSOR

RGB

7N02

EP1C12F256C8N

RGB

4N03

4N13

4N01

4N15

4N07

4N05

4N17

4N19

4N11

4N09

LVD SA p

LVD SA n

LVD SB p

LVD SB n

LVD SC p

LVD SC n

LVD SD p

LVD SD n

LVDSCLKp

LVDSCLKn

LVD SA p

LVD SA n

LVD SB p

LVD SC p

LVD SC n

LVD SD p

LVD SD n

LVDSCLKp

LVDSCLKn

LVD SB n

LVD SA +

LVD SA -

LVD SB +

LVD SB-

LVD SC +

LVD SC -

LVD SD +

LVD SD -

LVDSCLK+

LVDSCLK-

1P07

LVDS_VCC

LVD SA +

LVD SA -

LVD SB +

LVD SB -

LVD SC +

LVD SC -

LVD SD +

LVD SD -

LVDSCLK+

LVDSCLK-

TO DISPLAY (LC4.8 LC4.9)TO DISPLAY (LC4.3)

Only for sets with

PIXEL PLUS

SC2_AV3_Y_IN

RGB|CVI_HDA_SEL

HDPCSide-AVEXT2EXT1TV

PC_HD_DET H H H H L H

SD_HD_SEL H H H H H H

RGB|CVI_HDA_SEL L H L L L L

SCALER

SC2_OUT_SW

1R06

1R07

1R02

7R12

18 2

1Q01

PC-VGA/

CVI-2

BINA|Pb

GINA|YINA

RINA|Pr

V_PC

H_PC

5Q01

5Q06

5Q11

5Q21

5Q23

7D03

SII9993CTG100

HDMI

PANELLINK

RECEIVER

HDMI_Y(0-7)

HDMI_CbCr(1-7)

COL_Di(1-7)

COL_YA(1-7)

B23

N.C.

7604

7E05

H_HDMI

V_HDMI

HDMI_VHS

HDMI_VVS

B14

C14

VIDEO

OUT

VIDEO

S-VHS

VIDEO

7101

SEL_IF_SDM

6104

26LC4.8A AA 6.

Block Diagrams, Testpoint Overviews, and Waveforms

Block Diagram Audio

HERCULES

TUNER & IF

AUDIO

B22

DIGITAL IO

B23

CINCH ANALOGUE

SIDE AV

B17

SIDE CONNECTORS

B23

CINCH ANALOGUE

B12

HDMI

AUDIO PROCESSING

B17

SIDE

CONNECTORS

SIDE I/O

AUDIO

B16

SA3

CONTROL

LED PANEL

HERCULES

CONTROL BOARD

B17

SIDE CONNECTORS

SYNC INTERFACE

DC-DC CONVERTER

7217

TDA15021H

1102

UV1316E/A I H-4

RF IN

RF OUT

TUNER

2106

SCL

SDA

QSS Mixer

AM Demod.

1106

SIF1

SIF2

AD Conv.

Std Stereo

Decoder

SC1_L_RF_OUT

SC1_R_RF_OUT

AudioIN2L

AudioIN2R

SC1_COMP_AV1_L_IN

SC1_COMP_AV1_R_IN

SC1_COMP_AV1_L_IN

SC1_COMP_AV1_R_IN

SC2_L_MON_OUT

SC2_R_MON_OUT

SC2_L_IN

SC2_R_IN

IF-TER

IFOUT

F108

AUDIO

SELECT

ADC/DAC

AUDIO

CONTROL

Vol/Treb/

Bass

Features

DACs

I2S

Processor

QSS/FM

F_15420_050.eps

130705

4110

6104

7101

SEL_IF_SDM

MUTE

OUT_MUTE

7202

1302

L_FRONT_IN

R_FRONT_IN

FRONT_L_IN

FRONT_R_IN

1M36

1K04

SC2_L

SC2_R

Only on

DVB Sets

SC2_L_MON_OUT

SC2_R_MON_OUT

AUDIO

L/R IN

1R06

1R03

SC2_L_IN

SC2_R_IN

1R07

AV3_L

AV3_R

3Q30

3Q31

AV3_LEFT

AV3_RIGHT

7D05

18 2

7D03

SII9993CT

HDMI

PANELINK

RECEIVER

1Q03

RX2+

RX2-

RX1+

RX1-

RX0-

RX0+

RXC+

RXC-

HDMI

AUDIO

IN L/R

CVI-1

AUDIO

IN L/R

AV3_HDMI-AUDIO_SEL

10,11

AUDOUTLSR

AUDOUTLSL

1K04

10 10

1M36

11 11

HP_LOUT

HP_ROUT

HEADPHONE

SOUND L-HEADPHONE-OUT

SOUND R-HEADPHONE-OUT

MUTE

OUT_MUTE

POWER_DOWN

SOUND_ENABLE

4211

4212

1J04

(1M52)

1739

SOUND-ENABLE_1

7606

7601

TS482ID

1010

DETECT

EXT_MUTE

7602

74HC08PW

B16

OUT_MUTE

POR_AUDIO

3628

3629

+5V

POR_AUDIO

B16

PWM

7700

TDA7490

5731

1736

Speaker L

15W/8Ω

Speaker R

15W/8Ω

1M02

TO 1002

SUPPLY

-16 V-19V

+16V+19V

-16V-19V

SOUND

ENABLE

DCPROT

SOUND-ENABLE

AUDIO

SUPPLY

PROT, CIRCUIT

+16 V+19V

PROT_AUDIOSUPPLY

7701:7707

POR-CLASSD

3718

3717

PROT1

5701

5702

stby-mute

4,22

2,24

AUDIO-L

AUDIO-R

3764

6703

3761

6702

-16 V-19V

+16 V+19V

7709/7710

PWM

OSC

5730

1735

AUDIO-L

AUDIO-R

N.C.

4219

4618

N.C.

AUDIO

OUT L/R

N.C.

1704

1705

1702

1701

1706

Channel+

Channel-

Volume+

Volume-

Power

0345

1K00

6050

6051

7062

7052

7051

3063

1040

GND

+5V2-STBY

OUT

LED2

LED1

3061

+5V2-STBY

Red

Green

PC-TV-LED

LED_SEL

+5V2-STBY

KEYBOARD

7217

TDA15021H

115

107

120

7430

+3v3STBY

+5VSW

3431

6F00

114

SEL_IF_SDM

4022

116

STATUS_1

SERVICE

SDM

119

STATUS_2

102

EXT_MUTE

111

SOUND-ENABLE

122

SC_STANDBY

B15B6

HERCULES

6070

LIGHT-SENSOR

LIGHT_SENSOR

1703

1M01

1K02

(1M01)

KEYBOARD

+3V3STBY

ITV_IR_SW_RESET

123

1202

127

AV2_DMMI_SW

3432

RES

7756

3759

3750

+3V3STBY

+3V3SW

SC_STANDBY

7755

PANEL-PWR-CTL

3758

3755

LVDS_VCC

5756 5754

PAN_VCC

+12VSW

B15

3051

7758

7754

AUDIO

IN L/R

Block Diagrams, Testpoint Overviews, and Waveforms

27LC4.8A AA 6.

Block Diagram Supply 37”

CONNECTIONS

SA1

STANDBY

SA2

MAINS FILTER + STANDBY

SUPPLY

6307

GBJ6J

6306

DF06M

7001

MC34067P

7011

7012

7007

HIGH

SIDE

DRIVE

7004

7009

5001

BIAS SUPPLY

SOFT

START

CURRENT

PROTECTION

CONTROL

VCC

OSCC

ERROR

SOST

7005

STP15NK50

7002

TCET1102

5011

7008

LOW

SIDE

DRIVE

7006

STP15NK50

6019

STPS20L40CFP

2003

60246025

3007

7010

TS2431

3030

1314

T5AH

1308

5303

5305

5306

MAINS

FILTER

1350

OVER

VOLTAGE

PROTECTION

1315

T1AE

400V_HOT

25V_HOT

HOT COLD

HOT

COLD

SUPPLY 37"

399V_HOT

5002

1007

T5A

VSND_POS

VSND_NEG

GND_SND

+24Vb

+24Va

+12V

400V_HOT

2303

2020

2022

2060

PRINTED

COMPONENT

HOT COLD

VREF

N.C.

5008

5007

25V_HOT

399V_HOT

6315

6316

6318

6317

RES

6314

6304

2319

3318

3000

2029

2045

6021

6041

5025

5026

7307

TCET1102

+12V_A

+12V_+24V

HOT

COLD

CONTROL

7501

TCET1102

+5V2-RELAY-IO2_PWM

7100

7101

7105

7150

TCET1102

1 4

7511

RES

7131

RES

VTUN

+11V

+8V6

+5V2

+5V_SW

5500

7531

+12V

STANDBY

7507

7506

7512

STANDBY

OVERVOLTAGE

PROTECTION

B16

TO 1J01(1M46)

CONNECTIONS

7102

B16

TO 1J00(1M03)

CONNECTIONS

+5V2

STANDBY: LOW = ON

HIGH = STBY

3V MAX

1V MAX STBY

CONTROL

7505/7509/7560/

Prot-OVV

+12V_A

PROT-OVV

F_15420_025.eps

150605

DISPLAY

TO 1M10

AMBI LIGHT

(Optional)

1305

1306

1307

1304

6504

6140

3509

5110

5507

5103

6505

6122

3158

PROT_AUDIOSUPPLY

2512

5506

2513

3128

3113

3124

2141

5504

5505

5104

5105

3108

3127

3104

3150

3101

3155

6151

6150

3156

6153

3157

6156

1316

1M10

1M03

1M46

3100

1317

1M02

SA3

TO 1M02

AUDIO

DISPLAY

+5V_SW

N.C.

SA1

SA2

2009

6029

2021

6030

5020

5018

5019

2042

2049

6031

6040

5021

5022

DC_PROT

7003

3031

3052

3057

VS Voltage

Adj.

3026

3025

9311

5017

5012

5009

2059

5010

DC_PROT

28LC4.8A AA 6.

Block Diagrams, Testpoint Overviews, and Waveforms

Block Diagram Supply 42”

SUPPLY PART A

STANDBY

SA2

SUPPLY PART B

CONNECTIONS

SA1

MAINS FILTER + STANDBY

PART B

MAINS FILTER + STANDBY PART A

SUPPLY 42"

6807

GBJ6J

7001

MC34067P

7017

7018

7007

HIGH

SIDE

DRIVE

7004

7009

5001

BIAS SUPPLY

SOFT

START

CURRENT

PROTECTION

CONTROL

VCC

OSCC

ERROR

SOST

7005

STP15NK50ZFP

5002

7008

LOW

SIDE

DRIVE

7006

STP15NK50ZFP

6044

STPS20L45CT

3007

7010

TL431ACD

VS Voltage

Adj.

+12V_A

+12V_+24V

5400

5401

5403

MAINS

FILTER

6506

DF06M

1450

OVER

VOLTAGE

PROTECTION

400V_HOT_A

25V_HOT_A

6021

STTH2003CFP

5027

5025

5026

5028

6H07

GBJ6J

7U01

MC34067P

7U17

7U18

7U07

HIGH

SIDE

DRIVE

7U04

7U09

5U01

BIAS SUPPLY

SOFT

START

CURRENT

PROTECTION

CONTROL

VCC

OSCC

ERROR

SOST

7U05

STP15NK50ZFP

5U02

7U08

LOW

SIDE

DRIVE

7U06

STP15NK50ZFP

7U10

TL431ACD

VS Voltage

Adj.

+24V

HOT COLD

1D00

T4A

5D00

5D01

5D03

MAINS

FILTER

1D50

OVER

VOLTAGE

PROTECTION

400V_HOT_B

25V_HOT_B

6U21

STPS20H100

5U25

5U26

1U07

T5A

400V_HOT_B

HOT COLD

TO 1M02

AUDIO

HOT

COLD

HOT

COLD

HOT COLD

VSND_POS

VSND_NEG

MAINS INPUT

HOT

COLD

CONTROL

7501

TCET1102

7100

7101

7105

7150

TCET1102

7511

RES

7131

RES

VTUN

+11V

+8V6

+5V2

+5V_SW

5500

7531

+12V

STANDBY

7507

7506

7512

STANDBY

OVERVOLTAGE

PROTECTION

B1B

TO 1M46

DC/DC

CONNECTIONS

7102

+5V2

STANDBY: LOW = ON

HIGH = STBY

3V MAX

1V MAX STBY

2020

2022

CONTROL

7505/7509/7560/

Prot-OVV

STANDBY

+12V_A

DC_PROT

PROT-OVV

F_15420_051.eps

130705

VREF

DISPLAY

TO 1M10

AMBI LIGHT

+24V_2

7002

TCET1102

7U02

TCET1102

VREF

5B92

1308

1400

F4A

1401

T1A

2503

6156

3810

2815

China

2816

6157

3406

2H15

China

2H16

1305

1306

1307

1C05

1B06

3000

6080

6078

2003

5040

3022

3052

3026

3030

1304

3057

+12V

+24Va

7030

6014

3025

6504

6140

3509

5110

5507

5103

6107

6122

3158

PROT_AUDIOSUPPLY

2512

5506

2513

3128

3113

3124

2141

5504

5505

5104

5105

3108

3127

3104

3150

3101

3155

6151

6150

3156

6153

3157

6156

3U07

3U57

6U78

6U79

2003

2B91

2B93

6B91

6B93

5B93

5B91

1303

3U30

3U26

3U24

3U22

2U22

1316

1M10

1M46

1317

1M02

3U28

3U00

6U77

5U40

5U105U17

5U08

5U07

DC_PROT

3U25

6077

5010

5017

3028

5007

5008

5U09

5009

3U52

3U39

MAINS_L

MAINS_N

3H10

3100

+5V2-RELAY-IO2_PWM

B5E

TO 1M03

VIPER

1M03

+5V_SW

POR

3534

RES

3539

RES

SA3

N.C.

Block Diagrams, Testpoint Overviews, and Waveforms

29LC4.8A AA 6.

Testpoint Overview Small Signal Board

I618

I218

I902

I900

I733

I602

F604

F605

F503

F504

F220

F737

F736

F738

I298

F221

F108

F103

F104

FE02

FE10

FE12

FE01

FE00

F700

SERVICE TESTPOINTS

FN15

FN14

FP02

FP05

FP04

F701

F754

F710

FE13

F102

I603

F_15270_036.eps

250505

3139 123 6093 .1

F101 C1

F102 D2

F103 C1

F104 D2

F105 D1

F106 D2

F107 C1

F108 C2

F109 C2

F110 B2

F111 B2

F112 B2

F113 B2

F114 C2

F115 D2

F116 D2

F117 D2

F201 A2

F202 A2

F203 A2

F204 B3

F205 B2

F206 B2

F207 B2

F208 B2

F209 B2

F210 C2

F211 A2

F212 A2

F213 A2

F214 A2

F215 A2

F216 B3

F218 A2

F219 A2

F220 A3

F221 A3

F222 B2

F223 B2

F224 A2

F225 A3

F226 A3

F227 C3

F228 A3

F229 B2

F230 A3

F231 A2

F232 B3

F233 B3

F234 B3

F235 B3

F236 C3

F237 B2

F238 B2

F239 B2

F240 B2

F241 B3

F242 B2

F243 B2

F244 B2

F245 A2

F246 B2

F247 A2

F248 B2

F249 B2

F250 B3

F501 A2

F502 A2

F503 A2

F504 A2

F505 A3

F601 A1

F602 A2

F603 A1

F604 A2

F605 A2

F700 A6

F701 A5

F710 A5

F736 A3

F737 A3

F738 A3

F743 B3

F754 A5

F755 A6

F800 B7

F801 B6

F802 C5

F803 B5

F804 B5

F900 C5

F901 C5

F902 C6

F903 C5

F904 C6

F905 B6

F906 B6

F907 B5

F908 C5

F909 C5

F910 C6

FB01 B7

FC00 B5

FC01 B5

FC02 B5

FC03 B5

FC04 B5

FC05 C5

FC06 B5

FC07 B4

FC08 B5

FC09 B5

FC10 B4

FD00 C7

FD01 D7

FD02 D7

FD03 D7

FD04 C7

FD05 C6

FD06 C6

FD07 C7

FD08 C7

FD09 C7

FD10 C7

FD11 D7

FD12 C7

FD13 C7

FD14 C7

FD15 C7

FD16 C7

FD17 B6

FE00 C5

FE01 C5

FE02 C4

FE03 B5

FE04 D5

FE05 C5

FE06 D5

FE07 B7

FE08 C4

FE09 C5

FE10 C4

FE11 C5

FE12 C5

FE13 C5

FF00 D6

FF01 D6

FF02 D4

FF03 D7

FF04 D7

FF05 D7

FF06 D6

FF07 D6

FF08 D3

FF09 D7

FF10 D6

FF11 D6

FF12 D6

FF13 D6

FG00 D4

FG01 D4

FG02 D3

FG03 D4

FG04 D3

FG05 D3

FG06 D3

FG07 D3

FG08 D3

FG09 D3

FG10 D2

FG11 D3

FG12 D2

FG13 D2

FG14 D6

FG15 D5

FG16 D6

FG17 D6

FG18 D5

FG19 D5

FG20 D5

FG21 D5

FG22 D5

FG23 D4

FG24 D3

FG25 D3

FG26 D5

FG27 D5

FG28 D5

FG30 D5

FG32 D3

FG33 D3

FG34 D3

FG35 D3

FG36 D4

FG37 D3

FG38 D3

FG39 D4

FG40 D7

FG41 D3

FG42 D4

FG43 D4

FG44 D4

FG45 D4

FG47 D4

FG48 D4

FG49 D4

FG50 D4

FG51 C2

FG53 D4

FG54 D4

FG56 D4

FJ00 A7

FJ01 A5

FJ02 A4

FJ03 A5

FJ04 A5

FJ05 A4

FJ06 A4

FJ07 A5

FJ08 A4

FJ09 A2

FJ10 A2

FJ11 A4

FJ12 A2

FJ13 A2

FJ14 A2

FJ15 A7

FJ16 A7

FJ17 A7

FJ18 A7

FJ19 A7

FJ20 A7

FJ21 A5

FJ22 A5

FJ23 A5

FJ24 A5

FJ25 A5

FJ26 A5

FK00 B1

FK01 B1

FK02 B1

FK03 B1

FK04 B1

FK05 B1

FK06 B1

FK07 C1

FK08 C1

FK09 C1

FK10 B1

FK11 A1

FM01 C4

FM02 C4

FM03 C4

FM04 C4

FM05 C4

FN01 A6

FN02 A6

FN03 A6

FN04 A7

FN05 A7

FN06 A7

FN07 A7

FN08 A7

FN09 A7

FN10 A7

FN11 B6

FN12 A6

FN13 A6

FN14 A6

FN15 A6

FN16 A6

FN17 A6

FN18 B6

FN19 B5

FN20 A7

FN21 A7

FN22 A7

FN23 A7

FN24 A6

FN25 B6

FN26 A7

FN27 A7

FN28 A7

FN29 A7

FN30 A7

FN31 A7

FN32 A7

FN33 A7

FN34 A7

FN35 A7

FP01 A6

FP02 A6

FP03 A6

FP04 A6

FP05 A6

FP06 A6

FP07 A6

FP08 A7

FP09 A7

FP10 A7

FP11 A7

FP12 A7

FP13 A6

FP14 A7

FP15 A6

FP16 A6

FP17 A7

I101 D2

I102 C2

I103 C2

I104 C2

I105 C2

I106 C2

I107 C2

I108 C2

I109 C2

I110 C2

I111 C1

I112 D2

I113 D2

I201 A2

I202 A2

I203 B2

I204 B2

I205 B2

I206 B2

I207 B2

I208 B2

I209 B2

I210 A3

I211 A3

I212 A3

I213 A2

I214 B2

I215 A2

I216 B2

I217 B3

I218 A3

I219 B3

I220 B3

I221 A2

I222 A2

I223 A2

I224 A3

I225 A2

I226 B2

I227 B2

I228 B3

I229 B2

I230 A3

I231 B2

I232 A2

I233 B2

I234 B2

I235 B2

I236 B2

I237 B2

I238 A2

I239 A3

I240 A3

I241 A2

I242 A2

I243 A3

I244 B3

I246 A3

I247 A3

I248 A3

I254 C3

I255 B3

I256 B3

I257 B3

I258 B2

I259 B3

I262 B2

I264 A2

I265 B3

I266 B3

I267 B3

I268 B3

I269 A2

I270 B3

I271 A3

I272 B3

I273 C3

I274 A1

I275 A3

I277 A3

I278 A3

I283 B3

I284 B3

I285 B3

I288 B3

I289 A2

I290 A2

I291 A2

I292 A2

I293 A2

I294 A2

I297 A1

I298 B3

I430 A1

I440 B3

I443 B3

I449 A3

I450 A3

I451 A3

I452 A3

I453 A1

I454 A1

I501 A3

I502 A3

I503 A2

I504 A2

I505 A2

I602 A1

I603 A2

I604 A1

I605 A2

I606 A2

I607 A1

I608 A1

I610 A1

I611 B1

I612 A1

I613 A1

I614 A1

I615 A1

I616 A1

I617 A2

I618 A1

I619 A1

I705 A3

I706 A4

I708 A5

I709 A5

I710 A4

I711 A4

I712 A4

I713 A4

I714 A4

I715 A4

I716 A4

I731 A4

I732 A3

I733 A3

I734 A3

I735 A3

I736 A3

I740 B3

I741 B3

I742 B3

I747 A5

I748 A5

I749 A5

I750 A6

I751 A5

I752 A5

I753 A5

I754 A5

I755 A5

I756 A6

I757 A5

I758 A5

I759 A5

I760 A6

I800 C6

I801 C5

I802 B5

I803 B5

I804 B6

I805 B5

I806 B5

I807 B5

I808 B5

I809 B5

I810 B5

I811 C7

I812 C6

I813 B7

I815 C6

I816 C6

I817 C6

I818 C4

I819 B5

I820 B6

I821 B5

I822 B5

I900 B7

I901 B6

I902 C6

I903 C6

I904 B6

I905 B6

I906 C5

IA00 C6

IA03 B4

IA05 C6

IA06 C6

IA07 C6

IA08 B5

IA09 B6

IB02 B7

IB03 B7

ID00 C7

ID01 D7

ID02 C7

ID03 C7

ID04 C7

ID05 C7

ID06 C7

ID07 C7

ID08 C7

ID09 C7

ID10 C7

ID11 C7

ID12 C7

ID13 C6

ID14 C6

ID15 C7

ID16 C7

ID17 C7

ID18 C7

ID19 C7

ID20 C7

ID21 C7

ID22 C6

IE00 D4

IE01 C4

IE02 D5

IE03 C6

IE04 C5

IE05 C5

IE06 C4

IE07 C4

IE08 C4

IE09 C5

IE10 C5

IE11 C5

IE12 C5

IE13 D5

IE14 D4

IE15 D4

IE16 C4

IE17 C4

IE18 C4

IE19 D5

IE20 D5

IE21 D5

IE22 D5

IE23 C5

IE24 C5

IE25 D5

IE26 D5

IE27 C5

IE28 C4

IE29 C4

IE30 C4

IE31 C5

IE32 C5

IE33 C5

IE34 C5

IE35 D5

IE36 C5

IE37 C5

IF00 D7

IF01 D7

IF02 D7

IF03 D7

IF04 D6

IF05 D6

IF06 D7

IF07 D7

IF08 D7

IF11 D6

IF12 D6

IF13 D7

IF14 D7

IF15 D6

IF17 D7

IF20 D7

IF21 D4

IF22 D6

IF23 D6

IG00 D4

IG01 D4

IG02 D4

IG03 D4

IG04 D3

IG05 D3

IG06 D3

IG07 D3

IG08 D3

IG09 D3

IG10 D3

IG11 D3

IG12 D3

IG13 D2

IG14 D6

IG15 D5

IG16 D6

IG17 D5

IG18 D6

IG19 D5

IG20 D6

IG21 D5

IG23 D5

IG24 D5

IG25 D5

IG26 D5

IG27 D4

IG28 D3

IG29 D3

IG30 D3

IG40 D5

IG42 D5

IG43 D4

IG46 D5

IG47 D5

IG49 D4

IG50 D4

IG52 D5

IG53 D5

IG54 D5

IG55 D5

IG56 D5

IG57 D5

IG58 D5

IG59 D4

IG60 D3

IG61 D2

IG62 D2

IG63 D3

IG64 D3

IG67 D3

IG69 D3

IG73 D4

IG75 D5

IG76 D6

IG78 D5

IG79 D5

IG80 D5

IJ01 A3

IJ02 A3

IJ03 A4

IJ04 A3

IJ05 A3

IJ06 A3

IJ07 A3

IJ08 A3

IJ09 A3

IJ10 A3

IJ11 A3

IJ12 A3

IJ13 A3

IK00 A1

IK01 A1

IK02 A1

IK03 A1

IK16 A1

IK17 B1

IK18 B1

IL01 B3

IL02 B3

IL03 B3

IL04 B3

IL05 B3

IL06 B3

IL07 B3

IL08 B3

IL09 B3

IL10 B4

IL11 B4

IL12 B4

IL13 B4

IL14 B4

IL15 B4

IL16 C3

IL17 B3

IL18 B3

IL19 B4

IM00 C4

IM01 C3

IM03 B4

IM04 B4

IM06 B4

IM07 B4

IM08 B4

IM09 B4

IM10 B3

IM11 C3

IN01 A6

IN02 A6

IN03 A6

IN04 A6

IN05 A6

IN06 A6

IN07 B6

IN08 A6

IN09 A6

IN10 A6

IN11 A6

IN12 A6

IN13 B6

IN14 A6

IN15 B6

IN16 A7

IN17 A7

IN18 A7

IN19 A6

30LC4.8A AA 6.

Block Diagrams, Testpoint Overviews, and Waveforms

C Overview

HERCULUS

TUNER & IF

SCALER

I²C

ADC

B18

DIGITAL IO

B14

FLASH / CONTROL

B11

SDRAM

B10

B15

SCART ANALOGUE IO

COLUMBUS

B19

SCALER INTERFACE

EPLD

B21

EPLD

B20

SCALER

SDA

SCL

109

HERCULES

SET

PROCESSOR

108

1102

UV1318S

TUNER

ERR

N1 N2

7801

GM1501H

SCALER

ERR

F_15420_026.eps

150605

+3V3STBY

3233

3232

7207

M24C16

EEPROM

NVM

ERR

NVM_WP_HERC

+3V3STBY

3249

104

1101

SERVICE

CONNECTOR

COMPAIR

916

C1 C2

C3 C4

1F00

7F03

M24C02

EEPROM

256x8

DCC_5V

3F18

3F17

SDA_DVI

SCL_DVI

DVI-D

CONNECTOR

3102

(5108)

3101

(5107)

SDA_IO

SCL_IO

5 6

7C01

M24C32

EEPROM

+3V3SW

3818

3817

ERR

NVM_WP_SCALER

7C00

MX29LV040

FLASH ROM

7B01

K4D263238F

SDRAM

ERR

ADDRESS

DATA

ADDRESS

DATA

AF5

SDA

SCL

1107

SERVICE

CONNECTOR

UART

UART_TX

UART_RX

3122

3123

1802

JTAG_TDI_SDA

JTAG_CLK_SCL

AF7

AD6

+3V3IO

3838

3837

JTAG

I2C

FSDATA

FSADDR

OCMDATA

OCMADDR

SW_I2C_SDA

SW_I2C_SCL

1G03

57 56

7L04

MST9883C

ANALOG

INTERFACE

ERR

3L19

3L20

7L07

7L06

+3V3SWB

3L36

3L37

+3V3SWB

A15 B15

7M00

T6TU5XBG

COLUMBUS

CTRL

ERR

3M14

3M15

ERR

T2 R2

7N02

EP1C12F256C8N

EPLD

BANK 4

ERR

4N21

4N22

1N02

FOR

DEVELOPMENT

USE ONLY

SDA

SCL

+3V3SW

3N46

3N47

7A00

PCA9515ADP

1P07

(1G50)

DISPLAY

FOR

PDP ONLY

3125

3124

112

113

7217

TDA15021H

DMMI

CONNECTOR

4A01

4A00

RES

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