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Colour Television

Chassis DPTV565 AA

E15000_000.eps 191004

Contents

Page

Contents

Page
54-55 57 62-63 62-63 62-63 62-63 69 69 69 69 69 71

1. Technical Specifications, Connections, and Chassis Overview 2 2. Safety Instructions, Warnings, and Notes 4 3. Directions for Use 5 4. Mechanical Instructions 6 5. Service Modes, Error Codes, and Fault Finding 10 6. Block Diagrams, Testpoint Overviews, and Waveforms Wiring Diagram 17 I2C Overview 18 7. Circuit Diagrams and PWB Layouts Diagram Power Supply Panel: AC Input (A1) 19 SSB: SIM Connector (Male) (B1) 21 SSB: IF, I/O Videoprocessing (B2) 22 SSB: Feature Box (100Hz Processing) (B3) 23 SSB: HOP (B4) 24 SSB: Audio Demodulator (B6) 25 SSB: Painter (B7) 26 SSM: Tuner (C1) 30 SSM: I/O's (C2) 31 SSM: Video Buffer (C3) 32 SSM: Convergence HV Output1 (C4) 33 SSM: Convergence HV Output2 (C5) 34 SSM: Interconnections (C6) 35 SSM: Audio Amplifier (C7) 36 SSM: Audio Amplifier (C8) 37 SSM: Diversity Tables (C9) 38 CRT Panel: Red (DR1) 45 CRT Panel: Green (DG1) 46 CRT Panel: Blue (DB1) 47 Large Signal Panel (E1) 49 Large Signal Panel (E2) 50 Large Signal Panel (E3) 51 Mapping Large Signal Panel E1-E3 (Part 1)(E4) 52

PWB 20 27-29 27-29 27-29 27-29 27-29 27-29 39-44 39-44 39-44 39-44 39-44 39-44 39-44 39-44 39-44 48 48 48 54-55 54-55 54-55 54-55

8. 9.

10. 11.

Mapping Large Signal Panel E1-E3 (Part 2)(E5) 53 Side Jack Panel (G1) 56 ACS Module (H1) 58 ACS Module (H2) 59 ACS Module (H3) 60 Mapping ACS Module H1-H3 (H4) 61 HOP Panel (J1) 64 HOP Panel (J2) 65 Diversity HOP Panel J1 and J2 (J3) 66 Mapping HOP Panel J1 and J2 Part 1 (J4) 67 Mapping HOP Panel J1 and J2 Part 2 (J5) 68 Keyboard Panel (K1) 70 Alignments 73 Circuit Descriptions, List of Abbreviations, and IC Data Sheets 79 List of Abbreviations 96 IC Data Sheets 100 Spare Parts List 109 Revision List 119

© Copyright 2005 Philips Consumer Electronics B.V. Eindhoven, The Netherlands. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise without the prior permission of Philips.

Published by JH 563 Service PaCE

Printed in the Netherlands

Subject to modification

EN 3122 785 15020

EN 2

1.

DPTV565 AA

Technical Specifications, Connections, and Chassis Overview

1. Technical Specifications, Connections, and Chassis Overview
Index of this chapter: 1.1 Technical Specifications 1.2 Connections 1.3 Chassis Overview 1.1.4 Miscellaneous Ambient Temperature Mains Voltage Mains Frequency Power Consumptions: Normal Operation Standby : : : : : : : : : : : : : : : : : : : : PLL 100 PAL B/G, D/K, I SECAM B/G, D/K, K1 NTSC M, NTSC 4.43 480p 576p 1080i NTSC 3.58 NTSC 4.43 NTSC Pl.bk. PAL B/G Pl.bk. Bi-NICAM BG/D 2CS B/G, I NICAM B/G, D/K, I, L UHF VHF S-Channels Hyperband 75 Ohm coax, IEC type : +5/+45 °C : 160 - 276 V_ac : 50/60 Hz

1.1
1.1.1

Technical Specifications
Reception Tuning System Nr. Of Presets Color Systems Off-air

: 180 W avg. : 0.7 W

A/V Connections

Product Dimensions (WxDxH cm): 43 inch model 46 inch model 50 inch model Product Weight: 43 inch model 46 inch model 50 inch model

: 106 x 62 x 125 : 125 x 71 x 140 : 125 x 71 x 154

: 57 kg (125 lbs) : 80 kg (176 lbs) : 82 kg (180 lbs)

Sound Systems Off-air

1.2
1.2.1

Connections
Keyboard

Frequency Bands

VOLUME

CHANNEL

SOURCE

MENU

POWER

Aerial Input

E_15000_052.eps 141004

1.1.2

Picture Display Type Aspect Ratio Picture Screen Diameter : : : : : : : : : : : : : : : : : : : : : : : : Rear Projection 3 CRTs 4:3 and 16:9 43" (4:3) 46" (16:9) 50" (4:3) 43" (109 cm) 46" (117 cm) 50" (127 cm) 100 Hz Dig. Scan (*) 120 Hz 480i (60 Hz) 480p (60 Hz) 576i (50 Hz) 1080i (60 Hz) Progressive Scan Interlaced Scan Digital Combfilter Dynamic Contrast Digital CTI Digital Histogram Tint Control (3 Modes) Auto Sharpness Auto DNR 1.2.2

Figure 1-1 Keyboard overview Rear Jack Panel

INPUT AV3: 480p/1080i-60Hz G/Y

R/Pr ANTENNA IN 75 INPUT-AV 1 Y VIDEO Pb L SYNC AUDIO R ComPair Pr AUDIO H R MONITOR OUT B/Pb

Visible Screen Size

V L

Picture Enhancements

F_15020_030.eps 170305

Figure 1-2 Rear I/O overview AV1 (Hosiden: SVHS - In) 1 -Y Ground 2 -C Ground 3 -Y 1.0 Vpp / 75 ohm 4 -C 0.3 Vpp / 75 ohm AV1 (Cinch) Ye - Video (CVBS) Wh - Audio L Rd - Audio R Gn - Y Bu - Pb Rd - Pr Monitor Out (Cinch) Ye - Video (CVBS) Wh - Audio L Rd - Audio R AV3 - (Cinch) Gn - G/Y Rd - R/Pr

H H j j

Color Enhancements

Active Control

(*) 100 Hz Digital Scan or Progressive Scan can be switched with the "On Screen Display" menu. 1.1.3 Sound Loudspeakers AutoSoundTM Control Stereo Sound Output : 2 x 4"x6" Full range : Theatre, Voice, Music, Personal : Digital NICAM : 2 x 12 W_rms

1.0 V_pp / 75 ohm 0.5 V_rms / 10 kohm 0.5 V_rms / 10 kohm 1.0 V_pp / 75 ohm 0.7 V_pp / 75 ohm 0.7 V_pp / 75 ohm

jq jq jq jq jq jq

1.0 V_pp / 75 ohm 0.5 V_rms / 10 kohm 0.5 V_rms / 10 kohm

kq kq kq

1.0 V_pp 0.7 V_pp

jq jq

Technical Specifications, Connections, and Chassis Overview
Bu - B/Pb Bk - V-sync Gy - H-sync Wh - Audio L Rd - Audio R 1.2.3 Side Jack Panel 0.7 V_pp 3.0 V_pp / 1 kohm 3.0 V_pp / 1 kohm 0.5 V_rms / 10 kohm 0.5 V_rms / 10 kohm jq jq jq jq jq

DPTV565 AA

1.

EN 3

G

F_15020_028.eps 170305

Figure 1-3 Side I/O overviews Side I/O (Cinch) Ye - Video (CVBS) Wh - Audio L Rd - Audio R

1.0 V_pp / 75 ohm 0.5 V_rms / 10 kohm 0.5 V_rms / 10 kohm

jq jq jq

Side I/O (3.5 mm jack) Bk - Headphone 10 mW / 8 - 620 ohm Side I/O (Hosiden: SVHS - In) 1 -Y Ground 2 -C Ground 3 -Y 1.0 Vpp / 75 ohm 4 -C 0.3 Vpp / 75 ohm

t

H H j j

1.3

Chassis Overview

CRT Panel

FOCUS BLOCK (FG2) SSB

ACS

SSM HOP

LSB

AC INPUT
F_15020_031.eps 170305

Figure 1-4 PWB location

EN 4

2.

DPTV565 AA

Safety Instructions, Warnings, and Notes

2. Safety Instructions, Warnings, and Notes
Index of this chapter: 2.1 Safety Instructions 2.2 Maintenance Instructions 2.3 Warnings 2.4 Notes · The maintenance inspection includes the following actions: 1. Perform the 'general repair instruction' noted above. 2. Clean the power supply and deflection circuitry on the chassis. 3. Clean the picture tube panel and the neck of the picture tube.

2.1

Safety Instructions 2.3
Safety regulations require that during a repair: · Due to the chassis concept, a very large part of the circuitry (incl. deflection) is 'hot'. Therefore, connect the set to the mains via an isolation transformer. · 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. · Wear safety goggles when you replace the CRT. Safety regulations require that after a repair, you must return the set in its original condition. Pay, in particular, attention to the following points: · General repair instruction: as a strict precaution, we advise you to re-solder the solder connections through which the horizontal deflection current is flowing. In particular this is valid for the: 1. Pins of the line output transformer (LOT). 2. Fly-back capacitor(s). 3. S-correction capacitor(s). 4. Line output transistor. 5. Pins of the connector with wires to the deflection coil. 6. Other components through which the deflection current flows. Note: This re-soldering is advised to prevent bad connections due to metal fatigue in solder connections, and is therefore only necessary for television sets more than two years old. · Route the wire trees and EHT cable correctly and secure them with the mounted cable clamps. · Check the insulation of the mains cord for external damage. · Check the strain relief of the mains cord for proper function, to prevent the cord from touching the CRT, hot components, or heat sinks. · Check the electrical DC resistance between the mains plug and the secondary side (only for sets that have an isolated power supply). Do this as follows: 1. Unplug the mains cord and connect a wire between the two pins of the mains plug. 2. Turn on the main power switch (keep the mains cord unplugged!). 3. Measure the resistance value between the pins of the mains plug and the metal shielding of the tuner or the aerial connection of the set. The reading should be between 4.5 M and 12 M. 4. Switch the TV 'off' and remove the wire between the two pins of the mains plug. · Check the cabinet for defects, to prevent the possibility of the customer touching any internal parts. ·

Warnings
· In order to prevent damage to ICs and transistors, avoid all high voltage flashovers. In order to prevent damage to the picture tube, use the method shown in Fig. 2-1, to discharge the picture tube. Use a high voltage probe and a multi-meter (position VDC). Discharge until the meter reading is 0 V (after approx. 30 s).

V

E_06532_007.eps 250304

Figure 2-1 Discharge picture tube 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 potential. Available ESD protection equipment: Complete kit ESD3 (small tablemat, wristband, connection box, extension cable and ground cable) 4822 310 10671. Wristband tester 4822 344 13999. Together with the deflection unit and any multi-pole unit, flat square picture tubes form an integrated unit. The deflection and the multi-pole units are set optimally at the factory. We do not recommend adjusting this unit during repair. Be careful during measurements in the high voltage section and on the picture tube. Never replace modules or other components while the unit is '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.

·

· · ·

2.4
2.4.1

Notes
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 (PAL) or 61.25 MHz (NTSC, channel 3).

2.2

Maintenance Instructions
We recommend a maintenance inspection carried out by qualified service personnel. The interval depends on the usage conditions: · When a customer uses the set under normal circumstances, for example in a living room, the recommended interval is three to five years. · When a customer uses the set in an environment with higher dust, grease, or moisture levels, for example in a kitchen, the recommended interval is one year.

·

Directions for Use
· 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 standby (F). These values are indicated by means of the appropriate symbols. The picture tube panel has printed spark gaps. Each spark gap is connected between an electrode of the picture tube and the Aquadag coating. 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. ·

DPTV565 AA

3.

EN 5

Manufactured under license from Dolby Laboratories. `Dolby', `Pro Logic' and the `double-D symbol', are trademarks of Dolby Laboratories.

·

·

E_06532_006.eps 240604

Figure 2-2 Dolby PL symbol

3. Directions for Use
You can download this information from the following websites: http://www.philips.com/support http://www.p4c.philips.com

EN 6

4.

DPTV565 AA

Mechanical Instructions

4. Mechanical Instructions
Index of this chapter: 4.1 Disassembly Procedures 4.2 Service Position 4.3 Picture Tube Replacement 4.4 Set Re-assembly Notes: · Figures below can deviate slightly from the actual situation, due to the different set executions. · Follow the disassembly instructions in described order.

4.1

Disassembly Procedures
All numbers, found in the following text, refer to the drawing below and apply to both the 43" 46" and 50" models. Note: · Not all shown items are available for all models. · If you are servicing a PWB or speaker, you do not need to remove the plastic Upper Back Cover (4).

43" CABINET EXPLODED VIEW
AC21

AC22 AC22 AC14 AC15 AC21 AC16 AC09 AC17 (mirror) D AC10 (bracket) AC07 AC12 C A AC19 AC06 (chassis frame) I AC08 A A C C

AC02 AC01

B AC26

D

AC27 G AC31 AC13 AC05 AC26 AC33 AC22 H AC11

AC20

AC03

AC04 (Support)
3135 034 00361

AC31
(Module Bracket)

F AC34 DFU Remote
(Owner's Manual)

AC12 AC32 AC23 E AC20 AC11

AC28

i

E_15000_057.eps 141004

Figure 4-1 Exploded view 43" cabinet

DFU
(Owner's Manual)

TYPICAL 46"/50"/55" CABINET EXPLODED VIEW
165 NOTE: NOT ALL ITEMS SHOWN ARE AVAILABLE FOR ALL MODELS. J 46 34

2

35

REMOTE 1186
POWER

36

TV SWAP DN SOUND

VCR PIP CH UP

ACC ACTIVE CONTROL FREEZE

1035

80 26 117

79 Located under top of cabinet
PHILIPS

PICTURE

66
+
Intelli Sense

STATUS/ EXIT

MENU/ SELECT

MUTE

VOL

CH

95

9 57 5208 59 5206

1 4 7
TV/VCR A/CH

2 5 8 0
POSITION PIP

3 6 9
SURF

44 37

...................................................................................................................................... ...................................................................................................................................... ...................................................................................................................................... ...................................................................................................................................... ...................................................................................................................................... ...................................................................................................................................... .................................................................................................................................... .................................................................................................................................... .................................................................................................................................... ................................................................................................................................... ................................................................................................................................... .................................................................................................................................. .................................................................................................................................. ................................................................................................................................. ................................................................................................................................. ................................................................................................................................ ................................................................................................................................ ............................................................................................................................... ............................................................................................................................... ............................................................................................................................... .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. ..............................................................................................................................

4527

5 77 A

!
8190 B Left 154 (caster) F 88 115 31 F C 75 G G C 76 68 86 E H E A B E_15000_058.eps 141004 Right 4

Optical Assembly

Figure 4-2 Exploded view 46" and 50" cabinet

Mechanical Instructions
4.1.1 Lower Center Back Cover Removal (86) 1. Remove all screws (B and C). 2. Remove the Lower Center Back Cover. 4.1.2 Side Back Cover Removal Remove all screws (F) from each of the Side Back Covers (some prying may be necessary to dislodge covers). Note: This allows access to the Side Jack Panel and to the Left and the Right Speakers. 4.1.3 Large Signal Board Removal (LSB) Note: See for the location of the panels figure "PWB location" in Chapter 1 "Technical Specifications, Connection Facilities, and Chassis Overview". 1. Disconnect all cables. 2. Remove three screws from the center of the PWB and pull three tabs on the right of the bracket. 3. Lift the right side of the LSB and slide the panel up and out. 4.1.4 AC Input Panel Removal 1. Disconnect all cables. 2. Remove four screws from the PWB. 3. Lift the AC Input Panel up and out. 4.1.5 Small Signal Module Removal (SSM) 1. Remove three screws along the rear of the chassis frame. 2. Remove two screws, which hold the chassis frame and are located between the LSB and SSB panels. 3. Remove one screw, which holds the chassis frame and is located between the Input Power and LSB panels 4. Remove the rear Jack Panel cover (76). 5. Slide the Chassis assembly rearward to allow access to the Module Bracket. 6. Remove the screws, which secure the Module Bracket, and release the cables. 7. Remove two screws from the centre of the SSM PWB. 8. Pull three tabs on the right of the panel bracket. 9. Lift the right side of the SSM, then move the SSM to the right to remove it. 4.1.6 Side Jack Panel Removal 1. Remove the Left Side Back Cover (see procedure above excluding the Module Bracket removal). 2. Remove two screws from the panel. 3. Slide the Side Jack Panel PWB out of the bracket. 4.1.7 Small Signal Board Removal (SSB) First, remove the Module Bracket (see the chapter "Small Signal Module Removal"). 1. Release the metal retainer clips, located at the front and rear edges of the SIMM connector. 2. Tilt the SSB to the right and then pull it up. 4.1.8 Convergence Panel Removal (ACS) First, remove the Module Bracket (see the chapter "Small Signal Module Removal"). 1. Carefully pull the ACS panel upward to separate it from the SSM connectors. 2. Disconnect the cable assemblies. 4.1.9

DPTV565 AA

4.

EN 7

Wide Band Video Panel Removal (HOP) First, remove the Module Bracket (see the chapter "Small Signal Module Removal"). 1. Remove the rear Jack Panel cover (76). 2. Disconnect the ribbon cable connectors. 3. Carefully separate the HOP panel from the SSM connectors.

4.1.10 Front Control Panel and Left or Right Speaker Removal (5) 1. Remove the Left and Right Side Back Covers. 2. Remove the two screws (on either side) of the speaker location. 3. Release two tabs on either side of the speaker baffle and pull the baffle forwards. 4. Loosen the ribbon cable and the grounding wire to allow working space. 5. Remove two screws to remove the Front Control Panel (4527). 6. Remove four screws each to remove the speakers (5208/ 5206). 4.1.11 Upper Back Cover Removal (4) 1. Remove all screws (A and B). 2. Lift the cover up to dislodge from pegs (J) and remove the cover. 4.1.12 Plastic Light Barrier Removal (Optical Assembly) Remove two screws (E) (one each at either end of the plastic light barrier). 4.1.13 Mirror Mounting Board Removal (57) Remove all screws, located in the mirror mounting board brackets, and remove the board. Note: Take care not to place fingerprints or smudges on the mirror. 4.1.14 Complete Optical Assembly or Individual CRT Assembly Removal 1. Remove the Plastic Light Barrier. 2. Disconnect the CRT panels, 2nd anode leads (at HVT), and the yoke connectors from assemblies to be removed. 3. To remove the complete Optical Assembly, remove four screws (G) and lift the assembly up and out. 4. To remove individual CRT assemblies, remove four screws (H) from the desired assembly and lift the assembly up and out. Caution: Do not disturb the focus assembly wing nuts, as this will misadjust mechanical focus.

EN 8 4.2

4.

DPTV565 AA

Mechanical Instructions
removal of these components could result in fluid spillage into the PTV cabinet. 8. Carefully remove the CRT/Lens assembly from the PTV cabinet. 4.3.2 Servicing the CRT/Lens Assembly Warning: Coupling fluid is a poisonous solution containing a high concentration of ethylene glycol. Do not leave exposed fluid unattended. Prevent children or pets from coming into contact with the fluid. Clean up spills immediately. Caution: Do not attempt any repairs on the CRT/optical block assembly without first removing the CRT coupling fluid. Removal of the delta output lens will result in spillage of the coupling fluid. B. Removing the PTV Coupling Fluid All repairs made to the CRT/optical block assembly require the removal of the coupling fluid. The following procedure describes how to remove the PTV coupling fluid. 1. Lay the CRT assembly on its side with the plug pointing up. 2. Remove the plug (X8). 3. Remove some of the fluid from the coupler to prevent spillage when the CRT is removed. An empty coupling fluid bottle with a cone top is recommended to lower the fluid level within the coupler. Squeeze and hold the bottle and insert the tip of the cap into the drain hole of the coupler. Loosen the grip on the bottle, allowing the fluid to be pulled up into the bottle. Save the fluid. 4. Reinstall the plug (X8). 5. Stand the CRT assembly up with the neck of the CRT pointing up. 6. With an awl or marking pen, outline the edges of the CRT onto the coupler. Note: The correct positioning of the CRT to the coupler is critical to the optimum performance of the optical system. 7. Remove the four CRT mounting bolts (A) (with springs and spacers) and remove the mounting bracket (D). 8. Remove the four CRT mounting ear screws. Note: The CRT mounting ear screws are not used on some assemblies. 9. Gently remove any metal shavings from around the screw holes. Do not allow the metal shavings to get into the fluid. Note the position of the high voltage anode cap with respect to the coupler. 10. Carefully remove the CRT from the coupler. Wipe any excess fluid from the faceplate of the CRT. Set the CRT aside. 11. Use an empty coupling fluid bottle to extract the remainder of the fluid from the coupler. Note: Complete removal of the coupling fluid is not necessary when only replacing the CRT. 12. Clean any remaining fluid from the coupler and the CRT gasket channel using absorbent tissue. Refer to "C". Cleaning the Coupler, C-element Lens, and CRT Faceplate procedure if the fluid is discoloured or contaminated. 13. Make all necessary repairs. C. Cleaning the Coupler, C-Element Lens, and CRT Faceplate 1. Remove CRT coupling fluid as described in steps B1 through B13. 2. Using denatured alcohol on a cloth made of 100% cotton or a lens cleaning tissue, gently clean the C-element (fisheye) lens, coupler and the CRT faceplate. Thoroughly clean the coupler assembly, including the expansion chamber bladder, and allow to fully dry. Caution: Do not use soap or detergent type substances to clean the coupler and its related assemblies. Water can be used as an alternative to denatured alcohol, but the assemblies must be completely dry before reassembly of the coupler and the addition of the coupling fluid. A hair

Service Position
1. 2. 3. 4. 5. 6. 7. 8. 9. Remove the Side Back Covers. Remove the Front Speaker Baffle. Remove the Front Control Panel. Route the ribbon cable and the wire through opening and into the back of the unit. Reconnect the ribbon cable to the Front Control Panel. Remove the Side Jack Panel to allow room for cable movement. Remove the rear Jack Panel cover (76). Being careful with the PIP Panel, pull the Chassis Frame out and tilt up. Place the Chassis Frame on the bottom board of the PTV.

4.3

Picture Tube Replacement
Replacement of the cathode ray tube (CRT) and/or optical system components of a Projection TV (PTV) can be easily accomplished by following general guidelines. Use care when working around the CRT and optical systems of the PTV. The PTV light path encompasses a number of precision optical components. These include lenses, mirrors, the lenticular screen, and Fresnel lens. The PTV incorporates three separate CRTs, representing green, red, and blue outputs. Each CRT uses an independent deflection/convergence yoke, magnetic centring ring, coupler, C-element lens, and output lens (A/B lens). Each tube is mechanically fastened to a coupler which houses fluid (a glycol-type substance) used to cool the high temperatures generated by the small (7") CRTs. The fluid also provides an optical characteristic supporting the optical system of the PTV. When replacement of a CRT or optical component is required, caution must be exercised in preventing fluid spillage. The technician must carefully reassemble the CRT/ optical components, ensuring a proper seal of the coupling fluid. Use only factory original coupling fluid. Caution: Do not use or add water as an alternative to the prescribed coupling fluid. Note: Upon completion of CRT/optical assembly repair, the centring, convergence, grey scale, mechanical and electrical focus adjustments are required. If more than one assembly requires repair, it is recommended the service technician fully complete one assembly at a time, using the existing assemblies as a reference for the alignment of the centring and convergence. The following procedure should be used when performing repairs on the CRT/optical assemblies of the Projection TV.

4.3.1

Disassembly Procedure A. Removal of a single CRT/Lens Assembly from the light rack 1. Remove AC power from the PTV. 2. Remove the upper and lower back covers (1/4" screws). 3. Remove the barrier board and the shield cover from around the lens assemblies (1/4" screws). 4. Carefully remove the CRT Socket Board from the CRT of the CRT/optical assembly being serviced. 5. Remove the yoke and convergence plugs, of the CRT/ optical assembly being serviced, from the Large Signal Module. 6. Remove the high voltage anode lead from the HV splitter block on the Large Signal Module of the CRT/optical assembly being serviced. Remove ground lug connectors from the coupler frame. 7. Remove the four 1/4" screws that secure the CRT/lens assembly to the light rack. These four screws are located in each corner, on the top of the coupler assembly. Caution: Do not remove the bolts with pressure springs or the inverted Torx screws of the CRT/lens assembly. The

Mechanical Instructions
dryer may be used to dry the coupler and its assemblies before reassembly. If contaminated fluid is discovered, the coupler and its related assemblies must be completely disassembled and cleaned to prevent a reoccurrence. 3. Replace the CRT and C-element lens gaskets. 4. Reassemble the C-element lens and the output lens to the coupler. 5. Refer to "Replacing the CRT Coupling Fluid" upon completion of necessary repairs and cleaning of the optical/coupler assemblies. D. Replacement of the CRT 1. Remove CRT coupling fluid as described in steps B1 through B13. 2. Remove the plastic protective coating (if present) from the faceplate of the replacement CRT. 3. Refer to "Replacing the CRT Coupling Fluid" to complete the CRT replacement. E. Repair or Replacement of the Optical/Coupler Assembly 1. Remove CRT coupling fluid as described in steps B1 through B13. 2. Remove the four inverted-type Torx screws, which secure the Delta output lens to the coupler. An inverted-type Torx socket can be purchased using part number 4835 395 17303. 3. Removal of the Delta output lens will allow access to the Celement lens, C-element gasket, coupler, and its assemblies. 4. Refer to "Replacing the CRT Coupling Fluid" upon completion of necessary repairs to the optical/coupler assemblies. F. Replacing the PTV Coupling Fluid Notes: · Before replacing the CRT coupling fluid, ensure the expansion chamber bladder is fully collapsed. This can be easily inspected by viewing the bladder through the small hole on the expansion chamber assembly. If the rubber of the bladder is not easily visible through the small hole, then the bladder may be considered collapsed and fluid can be added. If the rubber of the expansion chamber bladder is visible at the hole of the expansion chamber, then replacement of the expansion chamber bladder is required. · The CRT coupling fluid is critical to the optical performance of the PTV. Use only part number 4835 310 67032 (3 bottle kit) or 4835 310 67031 (1 bottle) to ensure the optical integrity and performance reliability of the PTV when replacing the CRT coupling fluid. 1. Reinstall the CRT gasket into the gasket channel of the coupler. Confirm the placement of the CRT, C-element lens, and vent plug gaskets. 2. Place the CRT onto the coupler with the high voltage anode lead positioned as marked in step 10 of procedure B. 3. Carefully position the CRT onto the coupler, using the outline defined in step 6 of procedure B as a reference. 4. Start the CRT mounting ear screws but do not tighten them. 5. Tighten the CRT mounting ear screws in a star pattern (like tightening lug nuts on the wheel of a car). Make sure the CRT does not shift position from the outline defined in step B6. Caution: do not over tighten the CRT ear screws (the CRT mounting ear screws are not used on some assemblies). 6. Install the CRT mounting bracket and start the four CRT mounting bracket bolts with springs. 7. Tighten the bolts in a star pattern. 8. Lay the CRT assembly on its side with the plug pointing up. 9. Remove the plug. 10. Using the PTV coupling fluid bottle with the cone top, refill the coupler with fluid through the drain access hole. Completely fill the coupler chamber so the fluid is level with

DPTV565 AA

4.

EN 9

the top of the coupler at the plug. Wipe any excess fluid from around the coupler. 11. Reinstall the plug and check for any fluid leaks. 12. Install the repaired CRT/optical block assembly into the PTV and perform any necessary adjustments.

4.4

Set Re-assembly
To re-assemble the whole set, execute all processes in reverse order. Note: While re-assembling, make sure that all cables are placed and connected in their original position

EN 10

5.

DPTV565 AA

Service Modes, Error Codes, and Fault Finding

5. Service Modes, Error Codes, and Fault Finding
Index of this chapter: 5.1 Test Conditions 5.2 Service Modes 5.3 Problems and Solving Tips (related to CSM) 5.4 ComPair 5.5 Error Codes 5.6 The "Blinking LED" Procedure 5.7 Trouble Shooting Tips How to Enter SDM To enter the Service Default Mode, press the following key sequence on the remote control transmitter "0-6-2-5-9-6"-MENU. Do not allow the display to time out between entries while keying the sequence. Upon entry into the Service Default Mode, the letters "SDM" will be displayed at the upper right corner of the screen.

5.1

Test Conditions
HRS: 120E SWID: HDR: 1AP1-5.15

SDM

The chassis is equipped with test points printed on the circuit board assemblies. They refer to the diagram letters. The numbering is in a logical sequence for diagnostics. Always start diagnosing (within a functional block), in the sequence of the relevant test points for that block. Measurements should be performed under the following conditions: · Service Default Mode. · Video: Colour Bar Signal. · Audio: 3 kHz left, 1 kHz right.

ERR:

14

13

31

30

17 16 23

5.2

Service Modes
Figure 5-1 SDM menu 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 a Philips Customer Care Centre (P3C) and a customer. There is also the option of using ComPair, a hardware interface between a computer (see requirements below) and the TV chassis. It offers the ability of structured troubleshooting, test pattern generation, error code reading, software version readout, and software upgrading. Minimum requirements: a Pentium processor, Windows 95/ 98, and a CD-ROM drive (see also paragraph "ComPair").

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Special SDM functions · Access to normal user menu: Pressing the "MENU" button on the remote control switches between the SDM and the normal user menus (with the SDM mode still active in the background). How to Exit SDM To exit the Service Default Mode, press the Power (standby) button. Note: To save the error codes, unplug the AC power cord without turning off the set. When the power is turned back on, the Service Default Mode will still be active. 5.2.2 Service Alignment Mode (SAM) The Service Alignment Mode (SAM) is used to align the set and/or adjust the option settings and to display/clear the error code buffer values. How to Enter SAM · To enter the Service Alignment Mode (SAM), press the following key sequence on the remote transmitter: "0-6-2-5-9-6"-[i+]. Do not allow the display to time out between entries. After entering SAM with this method a service warning will appear on the screen, you can continue by pressing any digit key on the RC. · Use the DST-emulation feature of ComPair. · Press the ALIGN button on the DST while the set is in the normal operation After entering this mode, "SAM" the following menu structure will appear on the screen:

5.2.1

Service Default Mode (SDM) Introduction The Service Default Mode (SDM) is a technical aid for the service technician. The Service Default Mode (SDM) establishes fixed, repeatable settings of customer controls, which allow consistent measurements to be made. The SDM also initiates the blinking LED procedure and, if necessary, overrides the 5 V protection. The SDM places the set in the following pre-defined conditions: · Tuning frequency set to 475.25MHz. · Volume level set to 25% (of the maximum volume level). · Other picture and sound settings set to 50% (mid-range). The following functions are turned OFF while in SDM: · Timer · Sleep timer The following functions are disabled during SDM (and enabled after leaving SDM): · Parental lock · Blue mute · Hospitality Mode · No-ident Timer (normally the set is automatically switched off when no video signal (IDENT) is received for 15 minutes). All other controls operate normally.

Service Modes, Error Codes, and Fault Finding

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SAM HRS: 1228 SWID: HDR: 1AP1-5.15 ERR: 101 23 18 0 0 0 0

Clear Errors: Erases the contents of the error buffer. Select the CLEAR ERRORS menu item and press the LEFT or RIGHT cursor key. The contents of the error buffer are cleared. The functionality of the OPTIONS and ALIGNMENTS (TUNER, WHITE TONE, GEOMETRY, SOUND, and SMART SETTING) sub-menus are described in the "Alignments" section (chapter 8). How to Exit SAM To exit the Service Alignment Mode, press the Power (Standby) button. Note: To save the error codes, unplug the AC power cord without turning off the set. When the power is turned back on, the Service Alignment Mode will still be active.

OPT: 186 174 7 207 55 0 0 0

CLEAR ERRORS OPTIONS TUNER SOUND SMART SETTING GDE SAM

> > > > > >

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5.2.3

Customer Service Mode (CSM) Purpose When a customer is having problems with his TV-set, he can call his dealer. The service technician can then ask the customer to activate the CSM, in order to identify the status of the set. Now, the service technician can judge the severity of the complaint. In many cases, he can advise the customer how to solve the problem, or he can decide if it is necessary to visit the customer. The CSM is a read only mode; therefore, modifications in this mode are not possible. How to Enter CSM Use one of the following methods: · Press the 'MUTE' button on the RC-transmitter simultaneously with the 'MENU' button on the TV (top control) for (at least) 4 seconds. Note: Activation of the CSM is only possible if there is no (user) menu on the screen!

Figure 5-2 SAM menu Contents of SAM · OPERATION HOURS. Displays the accumulated total of operation hours (not the standby hours). · SOFTWARE INFO SWID Displays the SW version of the software. example: 1AP1-5.15) · AP1 = 2 letter and 1 digit combination to indicate the software type and supported languages: · AP = Asian Pacific. · 1 = Main SW language version number. · 5.15 = Sub version number. · ERRORS (followed by maximal 7 errors). The most recent error is displayed at the upper left (for an error explanation see paragraph "Error Codes"). · OPTION BYTES. See chapter 8. · SUB MENU Clear Errors · Erases the contents of the error buffer. Select the CLEAR ERRORS menu item and press the LEFT or RIGHT cursor key. The contents of the error buffer are cleared. · The functionality of the OPTIONS and ALIGNMENTS (TUNER, WHITE TONE, GEOMETRY, SOUND, and SMART SETTING) sub-menus are described in the service adjustments. The functionality of the OPTIONS and ALIGNMENTS (TUNER, WHITE TONE, GEOMETRY, SOUND, and SMART SETTING) sub-menus are described in the service adjustments. How to Navigate Menu items may be selected using the cursor UP/DOWN keys. The selected item will be highlighted. When not all menu items will fit on the screen, pressing the cursor UP/DOWN keys on the remote transmitter will display the next/previous menu items. With the cursor LEFT/RIGHT keys, it is possible to: · Activate/deactivate the selected menu item (e.g. TUNER) · Change the value of the selected menu item (e.g. VERSLOPE) · Activate the selected submenu (e.g. SERV-BLK) Access to normal user menu Pressing the "MENU" button on the remote control switches between the SAM and the normal user menus (with the SAM mode still active in the background). Pressing the "MENU" key in a submenu will return the screen to the previous menu. Menu and Sub-menu Definitions

CSM 1 2 3 HRS: 0196 SWID: HDR: 1AP1-5.15 CODES: 101 23 17 103 0 11 12 13 14 15 16 17 31 0 MONO 3 1 50 54 23 16 OPT: 186 174 7 207 55 0

4 SYSTEM: AUTO 5 NO SIGNAL 6 7 8 NOT PERFERED 9 10 SOURCE: 0

SOUND: VOLUME: BALANCE: HUE: COLOUR:

BRIGHTNESS: 50 CONTRAST: 75

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Figure 5-3 CSM menu Contents of CSM Customer Service Menu 1 · Line 1 : "HRS : nnnn" and SWID : "1AP1-BBC-X.YY" HRS: Indicates the accumulated total of operational hours. (Shown in hexadecimal format.) (Standby hours are not counted as operating hours). SWID: Software identification of the main micro controller (1AP1-5.15) AP1 is 2 letter and 1 digit combination to indicate the software type and the supported languages. · Line 2 : "CODES : xx xx xx xx xx xx xx "; Error code buffer (see explanation of error codes above) Displays the last 7 errors of the error code buffer.

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Service Modes, Error Codes, and Fault Finding
How to Exit CSM Use one of the following methods: · Press a key on the remote control transmitter with exception of the 'CHANNEL', 'VOLUME' and digit (0-9) keys) · Press the `POWER' button on the remote control transmitter or on the TV set.

·

·

·

·

·

· · ·

· · · · · ·

Line 3 : "OPT xxx xxx xxx xxx xxx xxx xxx xxx"; Option bytes. Option bits control software and hardware functionality. An option byte or option number represents 8 of those bits. Each option number is displayed as a number between 0 and 255. The set may not work correctly when an incorrect option code is set. See Service Adjustments for more information on correct option settings Line 4: "SYSTEM : AUTO"; Indicates which Colour and sound system is installed for this preset: NTSC/PAL/ SECAM. Complaints that may be caused by an incorrect system setting: no color / colours not correct / unstable picture /noise in picture. To change the system setting of a preset: Press the "MENU" button on the remote control Select the INSTALL sub menu Select the MANUAL STORE sub menu Select and change the SYSTEM setting until picture and sound are correct Select the STORE menu item Line 5 : "NO SIGNAL"; Indicates that the set is not receiving an "ident" signal on the selected source. No or bad antenna signal; connect a proper antenna signal. Antenna not connected; connect the antenna. No channel / preset is stored at this program number; go to the INSTALL menu and store a proper channel at this program number. The tuner is faulty (in this case the CODES line will contain number 13 or 16); check the tuner and replace/ repair if necessary. Note: On some models (if the BM option is ON), BLUE MUTE is displayed when no signal is received. Line 6 : "TIMER ON " (Not Active on AP Units); Indicates that the on/off timer is running.The following Complaints may be caused by the activation of the sleep timer: The set may turn on from standby or may switch to a different channel without using either the remote control or the local keyboard. To switch off the activation timer: Select "TIMER" in the "FEATURE" menu. Select "ACTIVATE" in the "TIMER" menu. Set to "OFF" with the left/right cursor keys. Indicates that the on/off timer is running. The following Complaints may be caused by the activation of the sleep timer: The set may turn on from standby or may switch to a different channel without using either the remote control or the local keyboard. Line 7: "CHANNEL BLOCKED"; Indicates that all channels are locked except the selected channel.The following complaints may be generated due to locked channels: TV cannot be switched on from standby with the local keyboard buttons. "CH+" and "CH-" buttons on local keyboard do not function. To disable the LOCK feature: Select "FEATURE" menu (with the Remote Control). Select "LOCK" (with the Remote Control). Set to "OFF" Line 8: "NOT PREFERED" (Not Active on AP Units); Indicates that at least one channel is deleted as a preferred channel (by default, all channels are skipped). Note that "SKIPPED" will always be displayed in CSM unless all the channels are not skipped. To add a channel as a selected channel to the list of preferred channels: Select "INSTALL" menu. Select "CHANNEL EDIT". Select "ADD/DELETE". Set to "ADD" with the left/right cursor keys. Line 9 : "HOTELMODE ON" (Not Active on AP Units); Indicates that the Hotel mode has been activated. Line 10 : "SOURCE :"Indicates which SOURCE is installed for this preset. AV1, AV2, SVHS2, Channel number (8) Line 11 : "SOUND"; Indicates which sound mode is installed for this preset. Mono, Stereo, SAP, NICAM, L1, L2, Virtual or Digital. Line 12 : "VOLUME"; Value indicates level at CSM entry. Line 13 : "BALANCE"; Value indicates level at CSM entry. Line 14 : "HUE"; Value indicates level at CSM entry. Line 15 : "COLOUR"; Value indicates level at CSM entry. Line 16 : "BRIGHTNESS"; Value indicates level at CSM entry. Line 17 : "CONTRAST"; Value indicates level at CSM entry.

5.3

Problems and Solving Tips (related to CSM)
Note: Below described problems are all related to the TV settings. The procedures to change the value (or status) of the different settings are described above. New value(s) are automatically stored.

5.3.1

Picture Problems Snowy/Noisy Picture 1. Check line 24 'Noise Figure'. In case the value is 127 or higher, and the value is high on other programs, check the aerial cable/aerial system. 2. Check lines 11 'Sharpness' and 24 'Noise Figure'. In case the value of line 11 is 3 or 4 and the value of line 24 is high (127 or higher), decrease the 'Sharpness' value. Picture too Dark 1. Press 'Smart Picture' button on the RC-transmitter. In case the picture improves, increase the 'Brightness' or the 'Contrast' value. The new value(s) are automatically stored (in 'personal' pre-set) for all TV channels. 2. Check line 7 'Brightness' and 8 'Contrast'. If the value of line 7 is low (< 10) or the value of line 8 is low (< 10), increase the 'Brightness' or the 'Contrast' value. Picture too Bright 1. Press 'Smart Picture' button on the RC-transmitter. In case the picture improves, decrease the 'Brightness' or the 'Contrast' value. The new value(s) are automatically stored (in 'personal' pre-set) for all TV channels. 2. Check lines 7 'Brightness' and 6 'Contrast'. If the value of line 7 is high (> 40) or the value of line 8 is high (> 50). Decrease the 'Brightness' value or increase the 'Contrast' value. White Line around Picture Elements and Text 1. Press 'Smart Picture' button on the Remote Control. In case the picture improves, decrease the 'Sharpness' value. The new value is automatically stored (in "personal" preset) for all TV channels. 2. Check line 11 'Sharpness'. Decrease the 'Sharpness' value. The new value is automatically stored for all TV channels. No Picture Check line 27 'Tuned bit'. In case the value is 'On', install the required program again. Open the installation menu and perform manual installation. Blue Picture No proper signal is received. Check the aerial cable/aerial system. Blue Picture and/or Unstable Picture A scrambled or decoded signal is received. Black and White Picture Check line 9 'Colour'. In case the value is low (< 10), increase the 'Colour' value. The new value is automatically stored for all TV channels.

Service Modes, Error Codes, and Fault Finding
NO Colours/colour Lines Around Picture Elements or Colours not Correct or Unstable Picture Check line 20 'TV System'. If a "strange" system pops up, something has gone wrong during installation. Re-install the channel. Menu Text not Sharp Enough 1. Press 'Smart Picture' button on the RC-transmitter. In case picture improves, decrease the contrast value. The new value(s) are automatically stored for all TV channels. 2. Check line 8 'Contrast'. The value of line 8 is high (> 50). Decrease the contrast value. 5.3.2 Sound Problems No Sound from Left and Right Speaker Check line 6 'Volume'. The value is low. Increase the value of 'Volume'. The new value(s) are automatically stored (in "personal" pre-set) for all TV channels. Sound too Loud for Left and Right Speaker Check line 6 'Volume'. The value is high. Decrease the value of 'LS Volume'. The new value(s) are automatically stored (in "personal" pre-set) for all TV channels.

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When this is not the case, ComPair will guide you through the fault finding 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 fault finding 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. Beside fault finding, ComPair provides some additional features like: · Up- or downloading of pre-sets. · Managing of pre-set lists. · Emulation of the (European) Dealer Service Tool (DST). · If both ComPair and Force/SearchMan (Electronic Service Manual) are installed, all the schematics and the PWBs of the set are available by clicking on the appropriate hyperlink. Example: Measure the DC-voltage on capacitor C2568 (Schematic/Panel) at the Mono-carrier. Click on the "Panel" hyperlink to automatically show the PWB with a highlighted capacitor C2568. Click on the "Schematic" hyperlink to automatically show the position of the highlighted capacitor. 5.4.3 How to Connect This is described in the chassis fault finding database in ComPair .
TO UART SERVICE CONNECTOR TO I2C SERVICE CONNECTOR

5.4
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: · 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. · ComPair allows very detailed diagnostics (on I2C level) and is therefore capable of accurately indicating problem areas. You do not have to know anything about I2C commands yourself because ComPair takes care of this. · 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.

PC

VCR

Power 9V DC

I2C

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Figure 5-4 ComPair interface connection 5.4.4 How to Order ComPair order codes: · Starter kit ComPair32/SearchMan32 software and ComPair interface (excl. transformer): 3122 785 90450. · ComPair interface (excluding 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). · SearchMan32 CD (update): 3122 785 60080 (year 2002), 3122 785 60120 (year 2003), 3122 785 60130 (year 2004). · ComPair interface cable: 3122 785 90004. · ComPair firmware upgrade IC: 3122 785 90510. · Transformer (non-UK): 4822 727 21632. · Transformer UK: 4822 727 21633. Note: If you encounter any problems, contact your local support desk.

5.4.2

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 RS232) 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 fault finding program is able to determine the problem of the defective television. ComPair can gather diagnostic information in two ways: · Automatic (by communication with the television): ComPair can automatically read out the contents of the entire error buffer. Diagnosis is done on I2C/UART level. ComPair can access the I2C/UART bus of the television. ComPair can send and receive I2C/UART commands to the micro controller of the television. In this way, it is possible for ComPair to communicate (read and write) to devices on the I2C/UART busses of the TV-set. · Manually (by asking questions to you): Automatic diagnosis is only possible if the micro controller of the television is working correctly and only to a certain extend.

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Service Modes, Error Codes, and Fault Finding
Table 5-1 Error Code Table Error number Explanation 0 No error FBX 3V3 protection No Horizontal Flyback protection Vertical Output Failure (GDE) +5V protection active HOP POR not sucessful General I2C error main I2C bus DAC Initialisation failure (GDE) 3D Combfilter I2C communication error HCS-GDE communication failure NVM communication failure NVM Id error Main uP Internal RAM test failure Main tuner I2C failure Sound I2C failure SRAM test failure PIP/DW Tuner I2C failure ECO PIP/DW failure I/O expander I2C failure Guide+ I2C failure V-chip PIP failure NV clock failure Incredible picture (YUV) CR Bocma IC TDA888xx on DW panel errorn 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 Virtual Dolby error HIP I/O-video processing error Feature Box error 30 31 32 33 34 35 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 No Ack or response from GDE HCS encountered errors Sony A/V Switch I2C communication failure GDE non-critical error Change Display Config Exit did not occur I'm alive' not received in time Reserved for future error codes Reserved for future error codes Reserved for future error codes Reserved for future error codes Reserved for future error codes Reserved for future error codes Reserved for future error codes Reserved for future error codes Reserved for future error codes Reserved for future error codes Reserved for future error codes Reserved for future error codes Reserved for future error codes

Error Codes
Introduction 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, the error code will appear at the left side and all other errors shift one position to the right.

5.5.2

How to Read the Error Buffer Use one of the following methods: · On screen via the SAM (only possible when you have a picture). Examples: ERR: 0 0 0 0 0 0 0 : No errors detected. ERR: 6 0 0 0 0 0 0 : Error code 6 is the last and only detected error. ERR: 9 6 0 0 0 0 0 : Error code 6 was first detected and error code 9 is the last detected (newest) error. · Via the "blinking LED" procedure, if no picture is available. See explanation of "The blinking LED procedure" below.

5.5.3

How to Clear the Error Buffer The error code buffer will be cleared in the following cases: · By activating "CLEAR ERRORS" in the SAM menu. · By exiting SDM or SAM with the "Standby" command on the remote control. · Upon automatic reset, when the content has not changed for 50 consecutive hours. Note: By leaving SDM or SAM via the Mains switch, the error buffer will not be reset.

5.5.4

Error Codes In case of non-intermittent faults, clear the error buffer before starting the repair. This to ensure that "old" error codes are no longer present. Before clearing the buffer, write down the content, as the history can give you valuable information. If possible, check the entire content 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).

Note: Error codes 1,2, 3, and 4 are protection codes, and in this case, the supplies of some circuits will be switched "off". Also, in protection, the LED will blink the number of times equivalent to the most recent error code.

Service Modes, Error Codes, and Fault Finding
Table 5-2 Error Code Table GDE Error A B C Error Name Vertical Output Failure Horizontal Flyback Failure HOP Initialization Failure Description

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This error indicates the Vertical Deflection pulse received at pin 9 on the TDA933x is not correct. This can be caused by a failure in the HOP board or the Scan Board. This error indicates the Horizontal Flyback pulse received at pin 13 on the TDA933x is not correct. This can be caused by a failure in the HOP board or the Scan Board. This error indicates the TDA933x was not initialized correctly during ACS board power up. This can be caused by an error on the ACS board, the HOP board or the Small Signal Carrier board. This error indicates the TDA8444 was not initialized correctly during ACS board power up. This can be caused by an error on the ACS board, the HOP board or the Small Signal Carrier board. This error indicates an error during the Auto Convergence process. This error indicates there was an error while setting the reference values. This error indicates there is an error in a sensor or an error occurred while walking a pattern across a sensor. This error indicates a general initialization software failure. This error is caused by the ACS board. This error indicates there was an IIC error while accessing the HOP. This can be caused by an error on the ACS board, the HOP board or the Small Signal Carrier. This error indicates there was an IIC error while accessing the DAC. This can be caused by an error on the ACS board, the HOP board or the Small Signal Carrier. This error indicates there was an IIC error while accessing the ST2050A. This can be caused by an error on the ACS board. This error indicates there was an IIC error while accessing the main EEPROM on the ACS board. This can be caused by an error on the ACS board.

D

DAC Initialization Failure

E F G H I J K L M

Auto Convergence Failure Set References Failure Sensor Pattern Failure General Initialization Failure HOP IIC Error DAC IIC Error ST2050A IIC Error Main EEPROM IIC Error

EEPROM Factory Service 1 Failure This error indicates there was a data integrity failure when accessing the main EEPROM factory/ service area 1. This error is caused by corrupted EEPROM data that does not match the data integrity CRC. EEPROM Factory Service 2 Failure This error indicates there was a data integrity failure when accessing the main EEPROM factory/ service area 2. This error is caused by corrupted EEPROM data that does not match the data integrity CRC. EEPROM Factory Service 3 Failure This error indicates there was a data integrity failure when accessing the main EEPROM factory/ service area 3. This error is caused by corrupted EEPROM data that does not match the data integrity CRC. EEPROM Customer Data 1 Failure This error indicates there was a data integrity failure when accessing the main EEPROM customer data area 1. This error is caused by corrupted EEPROM data that does not match the data integrity CRC. EEPROM Customer Data 2 Failure This error indicates there was a data integrity failure when accessing the main EEPROM customer data area 2. This error is caused by corrupted EEPROM data that does not match the data integrity CRC. EEPROM Customer Data 3 Failure This error indicates there was a data integrity failure when accessing the main EEPROM customer data area 3. This error is caused by corrupted EEPROM data that does not match the data integrity CRC. EEPROM Factory Service 4 Failure This error indicates there was a data integrity failure when accessing the main EEPROM factory/ service area 4. This error is caused by corrupted EEPROM data that does not match the data integrity CRC. EEPROM Factory Service 5 Failure This error indicates there was a data integrity failure when accessing the main EEPROM factory/ service area 5. This error is caused by corrupted EEPROM data that does not match the data integrity CRC. EEPROM Factory Service 6 Failure This error indicates there was a data integrity failure when accessing the main EEPROM factory/ service area 6. This error is caused by corrupted EEPROM data that does not match the data integrity CRC. EEPROM Customer Data 4 Failure This error indicates there was a data integrity failure when accessing the main EEPROM customer data area 4. This error is caused by corrupted EEPROM data that does not match the data integrity CRC. EEPROM Customer Data 5 Failure This error indicates there was a data integrity failure when accessing the main EEPROM customer data area 5. This error is caused by corrupted EEPROM data that does not match the data integrity CRC. EEPROM Customer Data 6 Failure This error indicates there was a data integrity failure when accessing the main EEPROM customer data area 6. This error is caused by corrupted EEPROM data that does not match the data integrity CRC. EEPROM Scratch Pad Failure This error indicates there was a data integrity failure when accessing the main EEPROM scratch pad area. This error is caused by corrupted EEPROM data that does not match the data integrity CRC.

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Service Modes, Error Codes, and Fault Finding
Checking the Screen voltage from the Focus G2 block will indicate whether the High voltage circuit is working or not. Horizontal and Vertical drive from the HOP panel must be present for the High voltage to be present. Horizontal drive should be present on Pin 9 of 1510 and Vertical drive should be present on Pin 3. 5.7.3 No Picture If Audio is present but there is no Picture, press the Index button on the Remote control. If OSD is present, High voltage is working and the CRT drive circuits are working. If the signal is NTSC, YUV from the SSM is fed to the HOP on connector 1250. YUV from the SSB can be checked on Pins 25, 24, and 23 of connector 1020. 5.7.4 No Audio The Audio amplifier is located on the SSM. The Audio is powered by a supply located on the Large Signal panel. This voltage can be checked on Pins 10 and 11 of connector 1516. These voltages will measure a plus 23 and a minus 23 Volts. Speaker output can be checked on connector 1349. A Centre Channel Amp switch panel will be present on the Core models

The "Blinking LED" Procedure
Introduction The contents of the error buffer can also be made visible through the "blinking LED" procedure. This is especially useful when there is no picture. When the SDM is entered, the LED will blink the number of times equal to the value of the error code. The ON/OFF indicator going out for 500 ms precedes all error code sequences. (There is a possibility of up to 10.) After the 500 ms delay, the ON/OFF indicator will slowly flash the first number of the first code. This immediately follows by rapid flashes for the second number in the first code. If an error code is smaller than 10, the ON/OFF indicator will rapidly flash 1-9 times to indicate the code. (EXP. Six rapid flashes indicate an error code of 6.) There will be a delay of approximately 3 seconds between codes. For error codes of 10 and higher, the ON/OFF indicator will slowly flash the correct number of times to indicate the first digit, and will then rapidly flash the correct number of times to indicate the second digit. (EXP. Three slow flashes followed by six rapid flashes indicate an error code of 36.) When all error-codes are displayed, the sequence is finished and the ON/OFF indicator turns OFF for 300 ms. At this point the sequence will begin again as indicated by the ON/OFF indicator turning ON for 300 ms and repeating all error codes. Example: 112 024 036 0 0 After entering SDM: The sequence will begin by the ON/OFF indicator turning off for 500 ms. Then slowly blink 11 times followed by two rapid blinks (indicating error code 112). Next the LED will pause for 300 ms followed by 2 slow blinks follow by 4 rapid blinks, (indicating error code 024). Next the LED will pause for 300 ms, then slowly blink 3 times followed by 6 rapid blinks (indicating error code 36). Then pause 300 ms ending the sequence in this example. If there were error codes in positions 4 and 5, those sequences would also be given. Note: If errors 1, 2, 3, or 4 occur, the LED always blinks indicating the last error that occurred, even if the set is not in service mode.

5.7
5.7.1

Trouble Shooting Tips
Introduction Before the set can be repaired to a component level, it is necessary to determine which board is defective. The Wiring interconnect diagram is a useful tool for this (see chapter 6).

5.7.2

Dead Set The Standby Power supply and Rectifiers are located on the Input panel. Control for power On/Off is performed by the Microprocessor located on the SSB. This Processor