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Color Television
Chassis
LC4.3U
AA
E_14710_000.eps 240604
Contents
Page
Contents
Page
51-60 51-60 51-60 62 64 66 67
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 23 Block Diagram Video 24 Block Diagram Audio 25 Testpoint Overview Small Signal Board 26 I2C IC Overview 27 Supply Voltage Overview 28 7. Circuit Diagrams and PWB Layouts Diagram SSB: Tuner and VIF (B1) 29 SSB: Hercules (B2) 30 SSB: Sync Interface (B3) 31 SSB: Audio Delay Line (Reserved) (B4) 32 SSB: Audio Processing (B5) 33 SSB: DC-DC Converter (B6) 34 SSB: Diversity Tables B1-B6 35 SSB: Scaler (B7) 36 SSB: Scaler (B8) 37 SSB: Scaler Interface (B9) 38 SSB: SDRAM (B10) 39 SSB: Flash / Control (B11) 40 SSB: MUX-Sync Interface (B13) 41 SSB: Top Connectors (B16) 42 SSB: Side Connectors (B17) 43 SSB: ADC (B18) 44 SSB: Columbus (B19) 45 SSB: EPLD (B20) 46 SSB: EPLD (B21) 47
8. 9.
10. 11. PWB 51-60 51-60 51-60 51-60 51-60 51-60 51-60 51-60 51-60 51-60 51-60 51-60 51-60 51-60 51-60 51-60 51-60 51-60 51-60
SSB: Diversity Tables B9-B21 48 SSB: Digital I/O (B22) 49 SSB: Cinch Analog I/O (1FH) (B23) 50 Class D Audio Amplifier (C) 61 Keyboard Control Panel (D) 63 Side A/V Panel (G) 65 IR-LED and Light Sensor Panel (J) 67 Alignments 69 Circuit Descriptions, Abbreviation List, and IC Data Sheets 74 Abbreviation List 82 IC Data Sheets 85 Spare Parts List (Not Applicable) 89 Revision List 90
© 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 BB 0564 TV Service
Printed in the Netherlands
Subject to modification
EN 3122 785 15280
EN 2
1.
LC4.3U AA
Technical Specifications, Connections, and Chassis Overview
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). - Mains frequency (Hz) Ambient conditions: - Temperature range (°C) - Maximum humidity Power consumption - Normal operation (W) - Stand-by (W) Dimensions (WxHxD cm) - 26PF5320/28 - 32PF5320/28 : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : LCD, IPS 26" (66 cm), 16:9 32" (82 cm), 16:9 1366 x 768 1366 x 768 600:1 600:1 500 500 16 18 178x178 176x176 PLL NTSC M/N PAL M/N 1.2.1 Weight (kg) - 26PF5320/28 - 32PF5320/28 : 50 / 60
: +5 to +40 : 90% R.H.
: 96 : <1 : : 80.45 x 47.7 x 22.2 : 92.4 x 55.0 x 22.2 : : 16 : 18.2
1.1
1.1.1
Technical Specifications
Vision Display type Screen size - 26PF5320/28 - 32PF5320/28 Resolution (HxV pixels) - 26PF5320/28 - 32PF5320/28 Contrast ratio - 26PF5320/28 - 32PF5320/28 Light output (cd/m2) - 26PF5320/28 - 32PF5320/28 Response time (ms) - 26PF5320/28 - 32PF5320/28 Viewing angle (HxV degrees) - 26PF5320/28 - 32PF5320/28 Tuning system TV Colour systems Video playback - 26PF5320/28, - 32PF5320/28, Supported computer formats
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. Side I/O connections
S-Video Video Audio L R
E_14710_005.eps 210404
Supported video formats
Presets/channels Tuner bands
NTSC M/N 3.58, 4.43 PAL 6.0, M/N, B/G VGA (640x480) MAC (640x480) SVGA (800x600) XVGA (1024x768) WXGA (1280x768) 640x480i - 1fH 720x576i - 1fH 640x480p - 2fH 720x576p - 2fH 1280x720p - 2fH 1920x1080i - 2fH 125 presets VHF UHF S-band Hyper-band
Figure 1-1 Side I/O connections SVHS (Hosiden): Video Y/C - In 1 - Ground Y Gnd 2 - Ground C Gnd 3 - Video Y 1 VPP / 75 ohm 4 - Video C 0.3 VPP / 75 ohm Cinch: Video CVBS - In, Audio - In Ye - Video CVBS 1 VPP / 75 ohm Wh - Audio L 0.5 VRMS / 10 kohm Rd - Audio R 0.5 VRMS / 10 kohm Mini Jack: Audio Head phone - Out Bk - Head phone 32 - 600 ohm / 10 mW 1.2.2 Rear Connections
H H j j
jq jq jq
ot
1.1.2
Sound Sound systems : : : : : : : FM-mono FM-stereo B/G NICAM B/G, D/K, I, L AV Stereo 2x5 2 x 15 Aerial - In - - F-type (US) : 90 - 276
Maximum power (WRMS) - 26PF5320/28 - 32PF5320/28 1.1.3 Miscellaneous Power supply: - Mains voltage (VAC)
F_15270_071.eps 260505
Figure 1-2 Rear I/O
Coax, 75 ohm
D
Technical Specifications, Connections, and Chassis Overview
Cinch: Video CVBS - In, Audio - In Ye - Video CVBS 1 VPP / 75 ohm Wh - Audio L 0.5 VRMS / 10 kohm Rd - Audio R 0.5 VRMS / 10 kohm Cinch: Video CVBS - Out, Audio - Out Ye - Video CVBS 1 VPP / 75 ohm Wh - Audio L 0.5 VRMS /10 kohm Rd - Audio R 0.5 VRMS / 10 kohm Cinch: CVI-1 Video YPbPr - In Gn - Video Y 1 VPP / 75 ohm Bu - Video Pb 0.7 VPP / 75 ohm Rd - Video Pr 0.7 VPP / 75 ohm Cinch: CVI-1 Audio - In Rd - Audio - R 0.5 VRMS / 10 kohm Wh - Audio - L 0.5 VRMS / 10 kohm Cinch: PC Audio - In Rd - Audio - R 0.5 VRMS / 10 kohm Wh - Audio - L 0.5 VRMS / 10 kohm SVHS (Hosiden): Video Y/C - In 1 - Ground Y Gnd 2 - Ground C Gnd 3 - Video Y 1 VPP / 75 ohm 4 - Video C 0.3 VPPP / 75 ohm Service connector (ComPair) 1 - SDA-S I2C Data (0 - 5 V) 2 - SCL-S I2C Clock (0 - 5 V) 3 - Ground Gnd Service connector (UART) 1 - UART_TX Transmit 2 - Ground Gnd 3 - UART_RX Receive HDMI/PC-D: Digital Video, Digital Audio - In
19 18 1 2
E_06532_017.eps 250505
LC4.3U AA
1.
EN 3
PC VGA/DVI-2: Video 2fH RGB/YPbPr - In jq jq jq
1 6 11 5 10 15 E_06532_002.eps 050404
kq kq kq
Figure 1-4 VGA Connector 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 - Video Red/Pr - Video Green/Y - Video Blue/Pb - n.c. - Ground - Ground Red - Ground Green - Ground Blue - +5VDC - Ground Sync - n.c. - DDC_SDA - H-sync - V-sync - DDC_SCL 0.7 VPP / 75 ohm 0.7 VPP / 75 ohm 0.7 VPP / 75 ohm Gnd Gnd Gnd Gnd +5 V Gnd DDC data 0-5V 0-5V DDC clock j j j H H H H j H j j j j
jq jq jq
jq jq
jq jq
H H j j
jk j H
k H j
Figure 1-3 HDMI (type A) connector 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 - D2+ - Shield - D2- D1+ - Shield - D1- D0+ - Shield - D0- CLK+ - Shield - CLK- n.c. - n.c. - DDC_SCL - DDC_SDA - Ground - +5V - HPD - Ground Data channel Gnd Data channel Data channel Gnd Data channel Data channel Gnd Data channel Data channel Gnd Data channel j H j j H j j H j j H j j jk H j j H
DDC clock DDC data Gnd Hot Plug Detect Gnd
EN 4 1.3
1.
LC4.3U AA
Technical Specifications, Connections, and Chassis Overview
Chassis Overview
LCD PANEL CLASS D AUDIO AMPLIFIER PANEL
C
POWER SUPPLY PANEL
SMALL SIGNAL BOARD
B
KEYBOARD CONTROL PANEL
E G J
SIDE I/O PANEL LED & IR PANEL
F_15270_002.eps 2450505
Figure 1-5 Chassis overview
Safety Instructions, Warnings, and Notes
LC4.3U AA
2.
EN 5
2. Safety Instructions, Warnings, and Notes
Index of this chapter: 2.1 Safety Instructions 2.2 Warnings 2.3 Notes
2.3
2.3.1
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 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.
2.1
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.
·
·
2.3.2
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.
·
· · · ·
2.2
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.
2.3.3
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.
· · ·
EN 6
2.
LC4.3U AA
Safety Instructions, Warnings, and Notes
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.
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).
·
·
·
·
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.
E_06532_024.eps 230205
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.
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.
·
P
b
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.
Directions for Use
LC4.3U AA
3.
EN 7
3. Directions for Use
You can download this information from the following websites: http://www.philips.com/support http://www.p4c.philips.com
EN 8
4.
LC4.3U AA
Mechanical Instructions
4. Mechanical Instructions
Index of this chapter: 4.1 Cable Dressing 4.2 Service Position 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
F_15270_072.eps 260505
Figure 4-1 Cable dressing
4.2
Service Position
First, put the TV set in its service position. Therefore, place it upside down on a table top (use a protection sheet or foam bars).
The foam bars (order code 3122 785 90580) can be used for all types and sizes of Flat TVs. By laying the plasma or LCD TV flat on the (ESD protective) foam bars, a stable situation is created to perform measurements and alignments. By first placing a mirror flat on the table under the TV you can easily see if something is happening on the screen.
4.2.1
The Foam Bars
4.3
4.3.1
Assy/Panel Removal
Rear Cover Warning: Disconnect the mains power cord before you remove the rear cover. 1. Remove the screws that secure 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.
E_06532_018.eps 170504
Figure 4-2 Foam bars
Mechanical Instructions
4.3.2 Side I/O Panel 4.3.3 LED Panel
LC4.3U AA
4.
EN 9
2
1
2
F-15390_039.eps 280205
Figure 4-4 LED panel
1
1. Release the fixation clamp (1) and take the panel out of the bracket. 2. Disconnect the cable (2) from the panel. 4.3.4 Keyboard Control Panel
1
F_15390_046.eps 240505
4
Figure 4-3 Side I/O panel 1. Disconnect the cable (1) from the panel. 2. Release the two fixation clamps (2) and lift the panel out of the bracket.
3 2
3
3
2 1
F_15390_049.eps 250505
Figure 4-5 Keyboard control panel 1. Remove the two fixation screws (1) from the bracket and take out the panel/bracket combination. 2. Remove the fixation tape (2) from the panel/bracket combination. 3. Release the three fixation clamps (3) and lift the panel out of the bracket. 4. Disconnect the cable (4) from the panel.
EN 10
4.3.5
4.
LC4.3U AA
Mechanical Instructions
4.3.6 SSB Board
SSB Board Cover Shield (depending on model)
1 1 2 2
F_15270_044.eps 180505
F_15270_073.eps 260505
Figure 4-6 Cable clip on cover shield
Figure 4-8 SSB board connectors
2 3 3
F_15270_075.eps 260505
2
Figure 4-9 VGA connector screws 1. Very cautiously disconnect the LVDS cable (1) from the panel (see Figure "SSB board connectors"). Notice that this cable is very fragile. 2. Disconnect the six remaining cables (2) from the panel. 3. Remove the fixation screws that secure the SSB board (depending on model) and also the six fixation screws (3) from the VGA connector and the cinch connectors on the SSB board (see Figure "VGA connector screws"). 4. Take the panel out of its brackets.
F_15270_045.eps 190505
Figure 4-7 SSB board cover shield 1. Release the cable from the plastic cable clip (1) on the shield (see Figure "Cable clip on cover shield" above). 2. Remove the four fixation screws (2, see Figure "SSB board cover shield"; the screws are also indicated by arrows on the shield) and remove the shield. Notice that on one side, the shield is not only held by two screws, but also by two brackets (see Figure "Cable clip on cover shield" above).
Mechanical Instructions
4.3.7 Power Supply Panel (various models used) 4.3.8
LC4.3U AA
4.
EN 11
Audio Amplifier Panel
X530
2 1
1
1
2
1
2
X520
F_15270_049.eps 180505
Figure 4-11 Audio amplifier panel 1. Disconnect all cables (1) from the panel. 2. Remove the fixation screws (2) from the panel. 3. Remove the panel.
2
1 2
F_15270_048.eps 180505
Figure 4-10 Power supply panel 1. Disconnect all cables (1) from the panel. Notice that the two connectors for X520 and X530 on this panel are similar, and should not be mixed up later when they are reconnected (X520 is connected via its flatcable to connector CN01 on the LCD panel, near the Rspeaker; X530 is connected via its flatcable to connector CN04 on the LCD panel, near the L-speaker). 2. Remove the three fixation screws (2) from the panel. 3. Take the panel out of its brackets.
EN 12
4.3.9
4.
LC4.3U AA
Mechanical Instructions
LCD Panel
1
2
5
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5
F_15390_052.eps 280205
Figure 4-12 Anti-static copper foil
Figure 4-15 Connectors X520 and X530 on power supply panel
3
6
F_15270_051.eps 280205
Figure 4-13 LVDS connector
F_15390_051.eps 280205
Figure 4-16 Connector 66B on LCD panel
4
7
F_15390_050.eps 280205
Figure 4-17 LCD panel
F_15270_052.eps 180505
Figure 4-14 SSB board connectors for side I/O, keyboard control, and LED
Mechanical Instructions
To remove the LCD-panel, carry out the following steps: 1. Cautiously pull back the upper parts of the anti-static copper foils next to the "L" and "R" loudspeakers (see Figure "Anti-static copper foil"). Do this in such a way that the foils are no longer attached to the metal ground plate on which the SSB board is mounted. 2. Disconnect the cables (2) from the "L" and the "R" loudspeakers (see Figure "Anti-static copper foil"). 3. Important: Unplug the LVDS connector (3) on the LCD panel (see Figure "LVDS connector"). Be careful, as this is a very fragile connector! 4. Unplug the connectors (4) of the Side I/O panel, the Top Control panel, and the LED panel on the SSB board (see Figure "SSB board connectors for side I/O, keyboard control, and LED"). 5. Unplug the X520 and X530 connectors (5) on the Power Supply board (see Figure " Connectors X520 and X530 on power supply panel"). Instead of X520, also connector 66B (6) on the other end of the flatcable can be unplugged (see Figure "Connector 66B on LCD panel"). 6. Lift the metal frame (together with all PWBs) from the LCD panel. Take care not to damage the fragile LVDS cable, the 66B connector and the anti-static copper foils near the "L" and "R" loudspeakers (take care of this too when later re-assembling the TV set and replacing the copper foil). 7. After removal of the metal frame, you can lift the LCD display (7) from its plastic frame (see Figure "LCD panel"). 8. If the plastic frame is damaged, replace it by a new frame, after removing the loudspeakers, the Side I/O panel, the Top Control panel, and the LED panel.
LC4.3U AA
4.
EN 13
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". Also make sure that the anti-static copper foils are not damaged and that they make good electrical contact with the metal frame. Be careful with the fragile LVDS cable.
EN 14
5.
LC4.3U AA
Service Modes, Error Codes, and Fault Finding
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 ComPair 5.5 Error Codes 5.6 The Blinking LED Procedure 5.7 Fault Finding and Repair Tips 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.
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 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").
1
F_15270_074.eps 260505
Figure 5-1 Service jumpers
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). 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.
00035
LC4XUP1 1.08/S4XGVX 1.10
SDM
ERR 0 0 0 0 0 OP 000 057 140 032 120 128 000
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Figure 5-2 SDM menu
Service Modes, Error Codes, and Fault Finding
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 OFF 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 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.
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00035 LC4XUP1 1.08/S4XGVX 1.10 ERR 0 0 0 0 0 OP 000 057 140 032 120 128 000 . Clear . Options . Tuner . White Tone . Audio . NVM Editor . SC NVM Editor . ComPair Mode Clear ?
SAM
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.
On
F_15270_077.eps 260505
Figure 5-3 SAM menu
EN 16
5.
LC4.3U AA
Service Modes, Error Codes, and Fault Finding
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.
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 OFF 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:
5.3
5.3.1
Problems and Solving Tips Related to CSM
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 LC4XUP1 1.08/S4XGVX 1.10 CSM 2 CODES 0 0 0 0 0 3 OP 000 057 140 032 120 128 000 4 5 6 NOT TUNED 7 PAL 8 STEREO 9 CO 50 CL 50 BR 50 0 AVL Off
E_15270_078.eps 260505
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).
Service Modes, Error Codes, and Fault Finding
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. ·
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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.
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 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 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 buses 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. 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
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. 5.4.3
How To Connect This is described in the chassis fault finding database in ComPair.
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5.
LC4.3U AA
Service Modes, Error Codes, and Fault Finding
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
TO UART SERVICE CONNECTOR
TO I2C SERVICE CONNECTOR
PC
VCR
Power 9V DC
I2C
E_06532_021.eps 180804
Figure 5-5 ComPair interface connection 5.4.4 How To Order
Error Device Not applicable Not applicable Error Description No Error Mis-match of TV Hercules SW and Scaler SW Check Item Diagram
ComPair order codes (US): · ComPair Software: ST4191. · ComPair Interface Box: 4822 727 21631. · AC Adapter: T405-ND. · ComPair Quick Start Guide: ST4190. · 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.
0 1
2 3 4
Not applicable Not applicable Genesis Scaler Flash-ROM
-
B7 + B8
I2C error while 7801 communicating with the Genesis Scaler and/or Flash-ROM 7B01 is faulty/empty +5V protection General I2C error I2C error 7752
B10 B6
5
Scaler supply 7752 Not applicable ADC Scaler EEPROM
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.
6 7 8
1102, 7L04, 7M00 B1 + B18 + B19 7L04 B18 B11
I2C error while 7C01 communicating with the Scaler EEPROM 7207 I2C 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.
9
Hercules EEPROM
B2
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.
10
Tuner
I2C error while 1102, F102, F104, B1 communicating with F107 the PLL tuner I2C error while 7M00 communicating with the 2D/3D combfilter Columbus 7D03 I2C error while communicating with the iBoard HDMI Panellink Receiver/ Decoder (only in NAFTA and AP sets) Read-write error with the Scaler SDRAM 7B01 B19
11
Columbus
12
Not applicable HDMI Panellink Receiver/ Decoder
B12 (only in NAFTA and AP sets)
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.
13
14
Scaler SDRAM
B10
15 16
Not applicable EPLD
-
B20 + B21
I2C error while 7N02 communicating with EPLD I2C error while Digital Module communicating with (only on Digital the Digital Module sets) (only on Digital sets) -
17
Digital Module (only on Digital sets)
18
Not applicable
-
Service Modes, Error Codes, and Fault Finding 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.
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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 Hex .ADR .VAL .Store 0x000A 0x0000 Dec 10 0 Store? Description Existing value New value
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Service Modes, Error Codes, and Fault Finding
Table 5-3 NVM Default values (option bit settings through NVM Editor in SAM Mode) 32PF5320/28 0 0 0 1 1 1 0 0 56 38 PSE OPC PRIS Last color pattern status in factory mode Service default mode on/off Service Align mode on/off Scavm On / Off 0 0 0 0 0 0 0 0 0 00 Mute status Auto mode Cable/Antenna mode Last power status of the set Child lock enabled Surf mode on/off Factory mode on For PAL color enhancement in ES4 0 1 0 1 0 0 0 1 8A Radio mode or TV mode WAKE-UP MODE TV in Hotel mode Keyboard locked HBL Blue stretch mode SL Comb filter On/Off 0 0 0 0 0 1 0 0 32 20 Signal Strength Switch in MK2 LPG Lock/Unlock DVD tray Screen saver mode Black Stretch Mode Black Stretch Depth Coring on SVM PIP QSS 0 0 0 1 1 1 1 0 78 26PF5320/28 0 0 0 1 1 1 0 0 56 38 0 0 0 0 0 0 0 0 0 00 0 1 0 1 0 0 0 1 8A 0 0 0 0 0 1 0 0 32 20 0 0 0 1 1 1 1 0 78
Byte Nr. Bit
Feature/Mode
Description
Byte 0 174(dec)
0 QSS (LSB) 1 FMI 2 HCO 3 HP2 4 FSL 5 TFR 6 OSVE 7 MVK (MSB) Total Dec Values Total Hex Values
Mode of quasi split sound amplifier Connection of output of QSS amplifier EHT tracking mode Synchronization of OSD/Text display Forced slicing level for vertical sync DC transfer ratio of luminance signal Black current measuring in overscan (For Future Usage, as defined by software)
Byte 1 175(dec)
0 PSE 1 OPC 2 PRIS 4 WHITE PATTERN ON 5 SDM MODE 6 SAM MODE 7 SVMA Total Dec Values Total Hex Values
3 CONTINUOUS FACTORY Continuous factory mode
Byte 2 176(dec)
0 MUTE STATUS 1 TUNER AUTO MODE 2 CABLE MODE 3 LAST POWER MODE 4 CHILD LOCK MODE 5 SURF MODE 6 FACTORY MODE 7 PSNS Total Dec Values Total Hex Values
138 138
Byte 3 177(dec)
0 RADIO/TV MODE 1 WAKE-UP MODE 2 HOTEL MODE 3 HOTEL KBD LOCK 4 HBL 5 BLS 6 SL 7 CFA0 Total Dec Values Total Hex Values
Byte 4 178(dec)
0 Signal Strength 1 LPG 2 DVD TRAY LOCK 3 SCRSAVER MODE 4 BKS 5 BSD 6 CRA0 7 PIP QSS Total Dec Values Total Hex Values
120 120
Service Modes, Error Codes, and Fault Finding
32PF5320/28
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5.
EN 21
Byte Nr. Bit
Feature/Mode
Description
Byte 5 179(dec)
0 FFI 1 NNR 2 MUS 3 GAM 4 CBS 5 LLB 6 DSA 7 DSK Total Dec Values Total Hex Values
Fast Filter No red reduction during blue stretch NTSC matrix Gamma control Control sequence of beam current limiting Low level of beam current limiter Dynamic skin tone angle area Dynamic skin tone angle on/ off
0 1 1 1 0 0 1 0 78 4E
0 1 1 1 0 0 1 0 78 4E 0 0 0 0 0 0 0 0 0 00 0 1 0 0 0 0 0 0 2 02
Byte 6 180(dec)
0 LTI status 1 Inc_Life_Time 2 PC_Mode 3 HD_Mode 4 Tact_Switch 5 Set_In_Special_Stby 6 Hotel_OSDDisplay 7 Hotel_MonitorOut Total Dec Values Total Hex Values
LTI last status Inc_Life_Time PC_Mode HD_Mode Tact_Switch Set_In_Special_Stby Hotel_OSDDisplay Hotel_MonitorOut
0 0 0 0 0 0 0 0 0 00
Byte 7 181(dec)
0 Hotel_IconMode 1 DBE 2 SD 3 Set_in_PC_Sleep_Mode 4 Reserved 5 Reserved 6 Reserved 7 Reserved Total Dec Values Total Hex Values
Hotel_IconMode DBE SD Set_in_PC_Sleep_Mode Reserved Reserved Reserved Reserved
0 1 0 0 0 0 0 0 2 02 5.7.3 Tuner and IF
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.
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 I2C 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.
EN 22
5.7.4
5.
LC4.3U AA
Service Modes, Error Codes, and Fault Finding
4. 24 V output (for inverter X520 & X530): Short-circuit proof with auto-restart. Over voltage protection when output voltage is more than 40% above nominal value. Standby Mode 1. Apply a 12 ohm load resistor of sufficient power rating to all outputs mentioned above (+12 V, +18/ 24 V, +3V3 and +24 V). Connect the STBY pin (pin 10 of X200) to logical "L" (low), i.e. to GND. 2. Over an input voltage range of 90 VAC to 276 VAC only the +3V3 STBY output shall be up. Normal Mode: 1. Apply a 12 ohm load resistor of sufficient power rating to all outputs mentioned above (+12 V, +18/ 24 V, +3V3 and +24 V). Connect the STBY pin (pin 10 of X200) to logical "H" (high), i.e. to the +3V3 STBY output via a 2,2 k pull up resistor. 2. Over an input voltage range of 90 VAC to 276 VAC all outputs shall be up. The voltage on the +3V3 STBY output shall be 3.3 V over the entire input voltage range. The voltage on the big 400 V capacitor on the power supply should also be 400 V ±10%.
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 Check Fuse The power supply (various models are used) contains one fuse near the AC input connector X002. 1. Check with power supply in "off" state by means of ohmic measurement. 2. Fuse X102 may open in case of severe lightning strikes and/or failures in the power supply. 3. Check the standby signal at pin 10 of X200. ON is HIGH, OFF is LOW. During standby mode only the 3V3 is present at pin 10. Protections Concept on Power Supply Board (two models) 1. 12 V output (pin 8 of X200): Short-circuit protected by 2.5 A fuse X610. Over-voltage protection when output voltage is more than 40% above nominal value. 2. Vaudio output (+18 or +24 V, depending on power supply model used); (pin 1 of X200): Short-circuit proof (+18 V version has 2.5 A fuse X660). Over voltage protection when output voltage is more than 40% above nominal value. 3. 3V3STBY output (pin 3&4 of X200): Short-circuit proof with auto-restart. Over voltage protection when output voltage is more than 40% above nominal value.
Block Diagrams, Testpoint Overviews, and Waveforms
LC4.3U AA
6.
23
6. Block Diagrams, Testpoint Overviews, and Waveforms
Wiring Diagram
8903
8903
INVERTER INVERTER
3P X220
INVERTER
RIGHT SPEAKER
POWER SUPPLY
LVDS CONNECTION TO SCREEN
30P
LEFT SPEAKER
C
8P06 X200
12P
CLASS D AUDIO AMPLIFIER
3P 1003
4P 1001 8J03 1002 9P
8J04
8J02
X530
30P 31P
1P06
12P
1J02
3P 1J03
9P 1JO4(1M52)
1K00(1M21) 6P
12P
12P
X520
1K01(1M06) 12P
D
SIDE AV KEYBOARD CONTROL
1303 HP
1304 (1M06)
14P
8520
14P
8K01
12P
1302 L R Y 1301 SVHS
1K02 3P
8684
X002
POWER IN
2P3
3P 1J03
Digital A/V VGA Analog A/V Analog A/V
TUNER
8002
6P
1870
AC POWER INLET
J
IR/LED/LIGHT SENSOR
F_15270_038.eps 190505
E
3P 1684
B
SSB
8870
Block Diagrams, Testpoint Overviews, and Waveforms
LC4.3U AA
6.
24
Block Diagram Video
VIDEO B1 TUNER & VIF
+VTUN +5SW_a 1104 11 IF-TER 2106 2 8 TUNER F108 G_OSD R_OSD 4 Fast Blanking B_OSD 5 1 3104 RF_AGC 31 DC SCL SDA 1106 2 8 SIF2 30 AC AGC Detect VIF2 25
B2 HERCULES
7217 TDA15021H 7 VIF1 24 Sound Traps CVBS1 RGB Matrix Blue & Black Strech Gamma Corr. RO GO BO 85 86 87
B3 SYNC INTERFACE
7208 EF 7209 EF 7210 EF
B13 MUX-SYNC INTERFACE
F624 R_SDTV F625 G_SDTV F626 B_SDTV SC1_R_CVI_Pr_IN B13 SC1_G_CVI_Y_IN B13 SC1_B_CVI_Pb_IN B13 7E02 5 9 1 7 14 G_Y-ADC 25 11 B_PB-ADC B_PB+ G_Y+ 3 17 R_PR-ADC R_PR+ 27 7E01 SOG
B7 SCALER
7401 GM1501
B11 FLASH/CONTROL
7C00 MX29LV040QC OCMDATA EXTERNAL ROM INTERFACE FLASH ROM 512Kx8
B21 EPLD
1102 RF UX1318ST 6 IN
7
RO GO BO
C3
LVDS_VCC LVDSALVDSA+ LVDSBLVDSB+ LVDSCLVDSC+
D2 C2 B2
1P07 1 11 12 13 TO PLASMA PANEL TO LCD PANEL 14 15 16 17 18 19 20 24 25 26 21 22
OCMADDR
HERCULES
Video Switch + Control c QSS/FM QSS Mixer AM Demod. AM SAT Skin Tone U/V Tint Saturation
B20 EPLD
ANALOG INPUT PORT
7
SIF1
29
YUV B22
BINA|Pb 7436-2 GINA|YINA B22 22 1 2 Vsync_SDTV B13 B22 RINA|Pr
11 15 1 7E03
12 14
SCALER
LVDSDLVDSD+ LVDSCLK-
B23 CINCH ANALOGUE IO
1R02
VIDEO IN
1 3
7R57
SC2_Y_IN FRONT_Y_CVBS_IN SC2_C_IN
2 14 1 12 15
SC2_AV3_Y_IN CVBS_COMB SC2_AV3_C_IN
59
cvbs/y
Dig. 2H/4H Combfilter Y Delay Adj.
Yint
SCAVEM on text
Peaking SCAVEM U/V Delay
Vertical & East-West Geometry YUV in/out
VDRB
2 19 PC_HD_DET B7 7604 15 14 5 1 8 AVSYNC 4 AHSYNC L3 L4 GRAPHIC ZOOM AE16 AF16 AE15 AF15 DISPLAY TIMING GEN. AE14 AF14 AF12 AF11 AF13 AE12 TXB0TXB0+ TXB1TXB1+ TXB2TXB2+ TXB3TXB3+ TXBCTXBC+ 4N03 4N01 4N07 4N05 4N11 4N09 4N15 4N13 4N19 4N17 LVDSAn LVDSAp LVDSBn LVDSBp LVDSCn LVDSCp LVDSDn LVDSDp LVDSCLKn LVDSCLKp OR
LVDSCLK+
S-VHS 5
2 4
7206 EF
B3 7436-1 HOUT 67 3 4 Hsync_SDTV B22 B13 B22 B3
Vsync_SDTV V_PC H_PC Hsync_SDTV
1 2 12 13 10,11
64
Chroma PAL/NTSC/ SECAM Decoder & Baseband Delay Uint H/V Sync Sep H-OSC H-Shift H-Drive CVBS/Y
FRONT_C_IN
13 4R64 51 52
SC2_Y_IN_1
B9 SCALER
LVDS_VCC LVDSALVDSA+ LVDSBLVDSB+ LVDSCLVDSC+ LVDSDLVDSD+ LVDSCLKLVDSCLK+ 1P06 1 11 10 12 14 13 15 19 18 20 27 26 28 22 21 23
Vint
58 13 12 48
SD_HD_SEL B7
SC2_CVBS_MON_OUT
14 9
1R07
VIDEO OUT CVI_Pr_IN Pr
B7 SC2_OUT_SW
7B010 K4D263238F
95 OSD CONTROLLER FSDATA OUT BLENDER VIDEO ZOOM FRAME STORE CONTROL
VOUT
YOUT
G/Y3
55 4R68
SC1_CV1_DMMI_R_Pr_IN
UIN
VIN
43 B13
YIN
SDRAM 1Mx32x4 FSADDR 72
77 1R06
Y Pb CVI_Y_IN CVI_Pb_IN N.C.
78
79
80
74
75
76
70
71
4R70 4R69
SC1_CV1_DMMI_G_Y_IN
B18 HISTON.C.
GRAM
30 31 7L01 EF 7L03 EF 7L02 EF
7L04 MST9883C
B19 COLUMBUS
(Dig. PAL/NTC Comb) 7M00 T6TU5XBG
B13
SC1_FBL_IN_1 SC1_CV1_DMMI_B_Pb_IN
B13
SC1_B_CVI_Pb_IN
SC1_R_CVI_Pr_IN
SC1_G_CVI_Y_IN
INTF_V_OUT INTF_U_OUT INTF_Y_OUT
54 43 48 SCL 56 57 A/D CONV.
COL_Di(1-7) COLUMBUS DIGITAL COMB FILTER COL_YA(1-7)
COL_Do(1-7)
BRIGHTNESS/CONTRAST/HUE/SAT
7R12 EF
7G19 4R12
RGB/Pr Pb Insert YUV Interface INSSW3
B10 SDRAM
+2V5_DDR
B/Pb-3
R/Pr-3
UOUT
OR COL_YB(1-7) Only for sets with PIXEL PLUS 7N04 THC63LVDF84B TXB0+ TXB0TXB1+ TXB1TXB2+ TXB2TXB3+ TXB3TXBC+ TXBCRGB LVDS INTERFACE RECEIVER LVDS TRANSMITTER 7P02 THC63LVDM83R LVDSAn LVDSAp LVDSBn LVDSBp LVDSCn LVDSCp LVDSDn LVDSDp LVDSCLKn LVDSCLKp
D
SIDE AV
1060 Y/CVBS C 1080
1 3 4 5 2
B17 SIDE
CONNECTIONS
1K01 2 FRONT_YCVBS_IN 4 FRONT_C_IN 1304 (1M06) 2 4
SDA B23 B23 B13 B13 B13
7M01 MSM56V16
DRAM 512Kx16x2
SVHS
7E00
B22 DIGITAL IO
1Q01 1 2 3 13 14 VGA CONNECTOR
11 5 15
B23 B23 B23 5Q01 5Q06 5Q11 5Q21 5Q23 BINA|Pb GINA|YINA RINA|Pr V_PC H_PC
SC1_CV1_DMMI_R_Pr_IN SC1_CV1_DMMI_G_Y_IN SC1_CV1_DMMI_B_Pb_IN
13 1 3 5 2 12 9 RGB|CVI_HDA_SEL B7 14 15 4 SC1_R_CVI_Pr_IN SC1_G_CVI_Y_IN SC1_B_CVI_Pb_IN B2,B13 B2,B13 B2,B13 UART INTERFACE
COL_A
COL_D
B13 B13 B13 B13 B13
BINA|Pb GINA|YINA RINA|Pr
7N02 EP1C12F256C8N
EPLD PIXEL+ PROCESSOR
1
6
7E05 H_HDMI V_HDMI 5 1 8 HDMI_VHS 4 HDMI_VVS C14 B14
B12 HDMI
1Q03 1 2 3 4 5 6 7
19 18
7D03 SII9993CTG100 RX2+ RX2RX1+ RX1RX0+ RX0RXC+ RXC97 33 96 92 91 87 86 84 83 HDMI_CbCr(1-7) 34 HDMI PANELLINK RECEIVER
DVI/HDMI INPUT PORT
MICRO CONTROLLER
1 2
INTERNAL RAM HDMI_Y(0-7) SD_HD_SEL PC_HD_DET RGB|CVI_HDA_SEL TV H H L EXT1 EXT2 Side-AV H H H H H H L H L PC H L L HD H H L
8 9 10 11 12
HDMI CONNECTOR
RGB
10
F_15270_081.eps 270505
Block Diagrams, Testpoint Overviews, and Waveforms
LC4.3U AA
6.
25
Block Diagram Audio
AUDIO B1 TUNER & IF
1102 UR1318S(D) RF IN TUNER RF OUT Only on DVB Sets IFOUT 11 F108 IF-TER 2106
6104
B2 HERCULES
7217 TDA15021H 4110 2 3 1106 7 8 SIF1 SIF2 29 30 AM QSS Mixer AM Demod. QSS/FM 61 60 AD Conv. Std Stereo Decoder
B5 AUDIO PROCESSING
B16
C AUDIO AMPLIFIER
(CLASS-D)
7
1J04 1002
7001 TDA8931T
POWER COMPARATOR 16 OUT
1001 4 3 RIGHT SPEAKER
4211 4212
AUDOUTLSR AUDOUTLSL
3 1
3 1
AUDIO-R AUDIO-L
7004 PHASE INVERTER
4
IN+
HVPI
13
7000 TDA8931T AUDIO CONTROL Vol/Treb/ Bass Features DACs SOUND-ENABLE 8 8 SOUND-ENABLE
POWER 7 COMPARATOR 16 OUT
4
5 7101
33
2 1 LEFT SPEAKER
SCL
B2 SEL_IF_SDM
SDA
4
IN+
HVPI
13
B17 SIDE B23 CINCH ANALOGUE
1R06 SC1_COMP_AV1_L_IN
AV1 AUDIO L/R IN
D SIDE AV
1K01 10 1304 (1M06)
7601 TS482ID 2 SC1_COMP_AV1_L_IN SC1_COMP_AV1_R_IN 34 6 7
7606
CONNECTORS
1 HP_LOUT HP_ROUT HP_DET_R_DC_1 MUTE
10 12 11
HEAD_PH_L HEAD_PH_R HP_DET_R_DC1
1F01 7
12 11
1 2
HEADPHONE
SC1_COMP_AV1_R_IN
35 I2S Processor
1R03 SC2_L_IN SC2_R_IN SC2_L_IN SC2_R_IN 56 57
OUT_MUTE 7602 74HC08PW 3 & & & 2 1 5 9 10 HP_DET_R_DC_1 SOUND_ENABLE B2 POWER_DOWN B16 EXT_MUTE B2
AV2 AUDIO L/R IN
B22 DIGITAL IO
AV3_L AV3_R 3Q30 AV3_LEFT
B12 HDMI
7D05 12 13 15 14 AudioIN2L AudioIN2R 53 54
6 OUT_MUTE 8
3Q31 AV3_RIGHT 7D03 SII9993CT RX2+ RX2RX1+ RX1RX0+ RX0RXC+ RXC97 96 92 91 87 86 84 83 HDMI PANELINK RECEIVER 16
2 1
AUDIO SELECT ADC/DAC
B23 CINCH ANALOGUE
1R07 62 63 SC2_L_MON_OUT SC2_R_MON_OUT
7202
1Q03 1 3 4 6 7
19 18
10,11 AV3_HDMI-AUDIO_SEL SC2_L_MON_OUT SC2_R_MON_OUT
1 2
14 OUT_MUTE
9 10 12
SC2_L SC2_R
MUTE
HDMI
D SIDE AV
1302 L_FRONT_IN
AUDIO L/R IN
1304 (1M06) 6 8
B17 SIDE CONNECTORS
1K01 6 8 FRONT_L_IN FRONT_R_IN 49 50
36 37
SC1_L_RF_OUT SC1_R_RF_OUT
R_FRONT_IN
CONTROL E KEYBOARD CONTROL
Channel+ ChannelMenu Volume+ VolumePower 1309 1310 3324 1311 1312 1313
KEYBOARD 1684 2
B17 SIDE CONNECTORS
B2 HERCULES
7217 TDA15021H 114 SEL_IF_SDM
B6 DC-DC CONVERTER
1K02 2
4022
KEYBOARD 120 SERVICE SMD
B1 5756 3758
3755
HERCULES
+12VSW
7758
5757
LVDS_VCC PAN_VCC
J IR/LED/LIGHT-SENSOR
+3V3STBY 7802 VS 2 GND OUT 3
1870 1K00 116 119 IR STATUS_1 STATUS_2 EXT_MUTE SOUND-ENABLE SC_STANDBY AV2_DMMI_SW
B3 B3 B5 B5 B6 B15 B15 B2 B8
PANEL-PWR-CTL
7755
3750
+3V3STBY 3759 7756
7758
+3V3SW
1 7808
3
3
IR
97
102 111
+3V3STBY 7804 6801-2 Green 7801 6801-1 Red
3801
LIGHT-SENSOR-SDM
1
1
LIGHT_SENSOR
115
122 127
SC_STANDBY
2
2
B3 SYNC INTERFACE
3431 +3V3STBY +3v3STBY 7430 6F00 +5VSW
7803
3802
+3V3STBY
5
5
LED_SEL
4
4
LED_SEL
3432 RES
ITV_IR_SW_RESET
123
10
107
PC-TV-LED
6
6
PC-TV-LED
1202 11 F_15270_082.eps 270505
Block Diagrams, Testpoint Overviews, and Waveforms
LC4.3U AA
6.
26
Testpoint Overview Small Signal Board
F101 F102 F103 F104 F105 F106 F107 F108 F109 F110 F111 F