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Colour Television
Chassis
LC4.31E
AA
ME6
ME5
G_16210_000.eps 090206
Contents
Page
Contents
Page
74-83 74-83 74-83 74-83 74-83 74-83 74-83 74-83 74-83 74-83 74-83 74-83 74-83 85 87 89 90 91 92 93 95 99-101 99-101 99-101 103
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 13 6. Block Diagrams, Test Point Overviews, and Waveforms Wiring Diagram 26" & 32" 23 Wiring Diagram 37" 24 Wiring Diagram 42" 25 Block Diagram Supply 37" 26 Block Diagram Supply 42" 27 Block Diagram Video 28 Block Diagram Audio 29 Test Point Overview Small Signal Board 30 I2C Overview 31 Supply Voltage Overview 32 7. Circuit Diagrams and PWB Layouts Diagram LCD Supply (37"): Mains Filter & Standby (A1) 33 LCD Supply (37"): Supply (A2) 34 LCD Supply (42"): Mains Filter + Stdby A (A1) 41 LCD Supply (42"): Supply A (A2) 42 LCD Supply (42"): Mains Filter + Stdby B (A3) 43 LCD Supply (42"): Supply B (A4) 44 SSB: Tuner and IF (B1) 51 SSB: Hercules (B2) 52 SSB: Sync Interface (B3) 53 SSB: Audio Delay Line (PDP Only) (B4) 54 SSB: Audio Processing (B5) 55 SSB: DC-DC Converter (B6) 56 SSB: Diversity Tables B1-B6 57 SSB: Scaler (B7) 58 SSB: Scaler (B8) 59
PWB 35-40 35-40 45-50 45-50 45-50 45-50 74-83 74-83 74-83 74-83 74-83 74-83 74-83 74-83
8. 9.
10. 11.
SSB: Scaler Interface (B9) 60 SSB: SDRAM (B10) 61 SSB: Flash / Control (B11) 62 SSB: HDMI (B12) 63 SSB: MUX-Sync Interface (B13) 64 SSB: Digital I/O (B14) 65 SSB: SCART Analog I/O (B15A) 66 SSB: DMMI (B15B) 67 SSB: Top Connectors (B16) 68 SSB: Side Connectors (B17) 69 SSB: ADC (B18) 70 SSB: Columbus (B19) 71 SSB: Pacific 3 (B20) 72 SSB: Diversity Tables B9-B20 73 Class D Audio Amplifier (26" & 32") (C) 84 Side I/O Panel (26" & 32") (D) 86 Side I/O Panel (37" & 42") (D) 88 Keyboard Control Board (26" & 32") (E) 90 Keyboard Control Board (37" & 42") (E) 91 Front IR / LED Panel (26" & 32") (ME5P) (J) 92 IR-LED and Light Sensor Panel (26"& 32") (J) 93 Front IR / LED Panel (37" & 42") (J) 94 Standby & Audio Panel: Connections (SA1) 96 Standby & Audio Panel: Standby (SA2) 97 Standby & Audio Panel: Audio (SA3) 98 OTC Flash (For 1000pg TXT) (T) 102 Alignments 105 Circuit Descriptions, Abbreviation List, and IC Data Sheets 110 Abbreviation List 111 IC Data Sheets 114 Spare Parts List 118 Revision List 129
© Copyright 2006 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 WS 0665 BG CD Customer Service
Printed in the Netherlands
Subject to modification
EN 3122 785 16211
EN 2
1.
LC4.31E 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). Presets/channels Tuner bands : 100 presets : : : : VHF UHF S-band Hyper-band
1.1.2
Sound Sound systems : NICAM B/G, D/K, I, L : AV Stereo : : : : : : : :
1.1
1.1.1
Technical Specifications
Vision Display type Screen size - 26PF5321/10/12 - 32PF5321/10/12 - 37PF5321/10/12 - 26PF7321/12 - 32PF7321/12 - 37PF7321/10/12 - 42PF5421/10 Resolution (HxV pixels) Contrast ratio - 26PF5321/10/12 - 32PF5321/10/12 - 37PF5321/10/12 - 26PF7321/12 - 32PF7321/12 - 37PF7321/10/12 - 42PF5421/10 : LCD, IPS : : : : : : : :
26" (66 cm), 16:9 32" (82 cm), 16:9 37" (94 cm), 16:9 26" (66 cm), 16:9 32" (82 cm), 16:9 37" (94 cm), 16:9 42" (107 cm), 16:9
Maximum power (WRMS) - 26PF5321/10/12 - 32PF5321/10/12 - 37PF5321/10/12 - 26PF7321/12 - 32PF7321/12 - 37PF7321/10/12 - 42PF5421/10 1.1.3 Miscellaneous Power supply: Mains voltage (VAC) - 26PF5321/10/12 - 32PF5321/10/12 - 37PF5321/10/12 - 26PF7321/12 - 32PF7321/12 - 37PF7321/10/12 - 42PF5421/10 Mains frequency (Hz) Ambient conditions: - Temperature range (°C) - Maximum humidity Power consumption: Normal operation (W) - 26PF5321/10/12 - 32PF5321/10/12 - 37PF5321/10/12 - 26PF7321/12 - 32PF7321/12 - 37PF7321/10/12 - 42PF5421/10 Stand-by (W) - 26PF5321/10/12 - 32PF5321/10/12 - 37PF5321/10/12 - 26PF7321/12 - 32PF7321/12 - 37PF7321/10/12 - 42PF5421/10 Dimensions (WxHxD cm): - 26PF5321/10/12 - 32PF5321/10/12 - 37PF5321/10/12 - 26PF7321/12 - 32PF7321/12 - 37PF7321/10/12 - 42PF5421/10 Weight (kg): - 26PF5321/10/12 - 32PF5321/10/12 - 37PF5321/10/12
2x5 2 x 15 2 x 15 2x5 2 x 15 2 x 15 2 x 15
: 1366 x 768 : : : : : : : :
1200:1 1200:1 1200:1 2400:1 2400:1 2400:1 4000:1
: : : : : : : :
110 - 240 110 - 240 220 - 240 110 - 240 110 - 240 220 - 240 220 - 240
: 50 / 60
Light output
(cd/m2)
: 500 : 8 : : : : : : : :
: +5 to +40 : 90% R.H.
Response time (ms) Viewing angle (HxV degrees) - 26PF5321/10/12 - 32PF5321/10/12 - 37PF5321/10/12 - 26PF7321/12 - 32PF7321/12 - 37PF7321/10/12 - 42PF5421/10 Tuning system TV Colour systems
178x178 178x178 176x176 178x178 178x178 176x176 176x176
: PLL : PAL B/G, D/K, I : SECAM B/G, D/K, L/L' : NTSC M/N 3.58, 4.43 : PAL B/G : SECAM L/L' : : : : : : : : : VGA (640x480) MAC (640x480) SVGA (800x600) XVGA (1024x768) WXGA (1280x768) 640x480p - 2fH 720x576p - 2fH 1280x720p - 3fH 1920x1080i - 2fH
Video playback
: : : : : : : : : : : : : : : :
100 120 180 100 120 180 246 <1 <1 <2 <1 <1 <2 <1
Supported computer formats
: : : : : : :
80.45 x 43.8 x 11.4 92.4 x 50.7 x 11.9 110.0 x 60.9 x 10.25 69.75 x 49.48 x 9.97 93.5 x 51.65 x 12.0 111.4 x 61.8 x 10.3 123.7 x 68.8 x 11.0
Supported video formats
: 13.3 : 18.9 : 25.1
Technical Specifications, Connections, and Chassis Overview
- 26PF7321/12 - 32PF7321/12 - 37PF7321/10/12 - 42PF5421/10 : : : : 13.0 19.2 25.9 31.5
LC4.31E AA
1.
EN 3
jk j H
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: Digital Video/Digital Audio - In
19 18 1 2
E_06532_017.eps 250505
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.
k H j
1.2.1
Side I/O connections
Figure 1-3 HDMI (type A) connector
Audio Video R L
S-Video G_16210_070.eps 190106
Figure 1-1 Side I/O connections S-Video (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
AERIAL IN VIDEO IN Pr Pb Y
EXT 1
H H j j
jq jq jq
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
ot
EXT1: Video RGB - In, CVBS - In/Out, Audio - In/Out
20
2
AUDIO IN R L L R
EXT 2
21
E_06532_001.eps 050404
1
Figure 1-4 SCART connector
HDMI DVI HDMI AUDIO IN EXT 2 EXT 1 UART I2C ComPair G_16210_071.eps 190106
Figure 1-2 Rear I/O Aerial - In - - IEC-type (EU) Cinch: Audio - In Wh - Audio L Rd - Audio R
Coax, 75 ohm
D
1 2 3 4 5 6 7 8
- Audio R - Audio R - Audio L - Ground Audio - Ground Blue - Audio L - Video Blue - Function Select
0.5 VRMS / 10 kohm 0.5 VRMS / 10 kohm
jq jq
Cinch: 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: DVI Audio - In Rd - Audio - R 0.5 VRMS / 10 kohm Wh - Audio - L 0.5 VRMS / 10 kohm
jq jq jq
9 10 11 12 13 14 15 16 17 18 19 20 21
- Ground Green - n.c. - Video Green - n.c. - Ground Red - Ground - Video Red - Status/FBL
0.5 VRMS / 1 kohm 0.5 VRMS / 10 kohm 0.5 VRMS / 1 kohm Gnd Gnd 0.5 VRMS / 10 kohm 0.7 VPP / 75 ohm 0 - 2 V: INT 4.5 - 7 V: EXT 16:9 9.5 - 12 V: EXT 4:3 Gnd 0.7 VPP / 75 ohm
k j k H H j j j H j H H j j H H k j H
jq jq
Gnd Gnd 0.7 VPP / 75 ohm 0 - 0.4 V: INT 1 - 3 V: EXT / 75 ohm - Ground Video Gnd - Ground FBL Gnd - Video Terr. CVBS 1 VPP / 75 ohm - Video CVBS/Y 1 VPP / 75 ohm - Shield Gnd
EN 4
1.
LC4.31E AA
Technical Specifications, Connections, and Chassis Overview
7 8 - n.c. - Function Select
EXT2: Video Y/C - in, CVBS - In/Out, Audio - In/Out
20
2
9 10 11 12 13 14 15 16 17 18 19 20 21
21
E_06532_001.eps 050404
1
Figure 1-5 SCART connector 1 2 3 4 5 6 - Audio R - Audio R - Audio L - Ground Audio - Ground Blue - Audio L 0.5 VRMS / 1 kohm 0.5 VRMS / 10 kohm 0.5 VRMS / 1 kohm Gnd Gnd 0.5 VRMS / 10 kohm k j k H H j
- Ground Green - n.c. - n.c. - n.c. - Ground Red Gnd - Ground Gnd - YC/C - in 0.7 VPP / 75 ohm - n.c. - Ground Video Gnd - Ground Gnd - Video Mon. CVBS 1 VPP / 75 ohm - YC/Y - in 0.7 VPP / 75 ohm - Shield Gnd
0 - 2 V: INT 4.5 - 7 V: EXT 16:9 9.5 - 12 V: EXT 4:3 Gnd
j H
H H j H H k j H
1.3
Chassis Overview
Chassis Overview 26" & 32" Models
LCD PANEL CLASS D AUDIO AMPLIFIER PANEL
C
A T
POWER SUPPLY PANEL
SMALL SIGNAL BOARD
B
OTC TXT PANEL KEYBOARD CONTROL PANEL
E D J
SIDE I/O PANEL LED & IR PANEL Chassis Overview 37" & 42" Models
LCD PANEL
SA B E T
STANDBY & AUDIO PANEL SMALL SIGNAL BOARD POWER SUPPLY UNIT
A
CONTROL BOARD
OTC TXT PANEL SIDE I/O PANEL LED & IR PANEL
D J
G_16210_072.eps 190506
Figure 1-6 Chassis overview
Safety Instructions, Warnings, and Notes
LC4.31E 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.
LC4.31E 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 "Repair downloads". 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 "Repair downloads". For additional questions please contact your local repair help desk.
E_06532_024.eps 230205
2.3.5
Alternative BOM identification In September 2003, Philips CE introduced a change in the way the serial number (or production number, see Figure 2-1) is composed. From this date on, the third digit in the serial number (example: AG2B0335000001) indicates the number of the alternative BOM (Bill of Materials used for producing the specific model of TV set). It is possible that the same TV model on the market is produced with e.g. two different types of displays, coming from two different O.E.M.s. By looking at the third digit of the serial number, the service technician can see if there is more than one type of B.O.M. used in the production of the TV set he is working with. He can then consult the At Your Service Web site, where he can type in the Commercial Type Version Number of the TV set (e.g. 28PW9515/12), after which a screen will appear that gives information about the number of alternative B.O.M.s used. If the third digit of the serial number contains the number 1 (example: AG1B033500001), then there is only one B.O.M. version of the TV set on the market. If the third digit is a 2 (example: AG2B0335000001), then there are two different B.O.M.s. Information about this is important for ordering the correct spare parts! For the third digit, the numbers 1...9 and the characters A...Z can be used, so in total: 9 plus 26 = 35 different B.O.M.s can be indicated by the third digit of the serial number.
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.
2.3.6
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.
Directions for Use
· Always respect voltages. While some may not be dangerous in themselves, they can cause unexpected reactions that are best avoided. Before reaching into a
LC4.31E AA
3.
EN 7
powered TV set, it is best to test the high voltage insulation. It is easy to do, and is a good service precaution.
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.
LC4.31E 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
G_16210_073.eps 190106
Figure 4-1 Cable dressing (26PF5321/10)
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).
placing a mirror flat on the table under the TV you can easily see if something is happening on the screen.
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.
4.2.1
The Foam Bars
E_06532_018.eps 170504
Figure 4-2 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
Mechanical Instructions
4.3.2 Side I/O Panel 4.3.4
LC4.31E AA
4.
EN 9
Keyboard Control Panel
1 2 4
3 2 1
2
3
G_16210_074.eps 190106
2 3
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. 4.3.3 LED Panel
1
2
G_16210_076.eps 190106
1
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.
G_16210_075.eps 190106
4.3.5
SSB Cover Shield (depending on model)
Figure 4-4 LED panel 1. Release the fixation clamp [1] and take the panel out of the bracket. 2. Disconnect the cable [2] from the panel.
1
F_15270_044.eps 180505
Figure 4-6 Cable clip on cover shield
EN 10
4.
LC4.31E AA
Mechanical Instructions
1. Very cautiously disconnect the LVDS cable [1] from the panel (see Figure "SSB connectors"). Notice that this cable is very fragile. 2. Disconnect the other cables [2] from the panel. 3. Remove the fixation screws [3] that secure the SSB (depending on model) and also the fixation screws [4] from the connector plate (see Figure "Connector screws"). 4. Take the panel out of its brackets. 4.3.7 Power Supply Panel (various models used)
2
2
F_15270_045.eps 190505
Figure 4-7 SSB 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 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). 4.3.6 Small Signal Board
1
1
2
3
3 2
1 1
3 3
2
G_16210_077.eps 190106
Figure 4-8 SSB connectors
G_16210_079.eps 200106
4 4 4 4
4 4
4
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 fixation screws [2] from the panel. 3. Take the panel out of its brackets.
G_16210_078.eps 200106
Figure 4-9 Connector screws
Mechanical Instructions
4.3.8 Audio Amplifier Panel
LC4.31E AA
4.
EN 11
2 1 2
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3
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. 4.3.9 LCD Panel
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Figure 4-14 SSB connectors for side I/O, side control panel, and LED
1
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Figure 4-12 Loudspeaker cables
4
2 5
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Figure 4-13 LVDS connector
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Figure 4-15 Connectors X520 and X530 and fixation screws on power supply panel
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LC4.31E AA
Mechanical Instructions 4.4 Set Re-assembly
To re-assemble the whole set, execute all processes in reverse order. Notes: · While re-assembling, make sure that all cables are placed and connected in their original positions. See Figure "Cable dressing". Be careful with the fragile LVDS cable.
6
7
6
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Figure 4-16 Shield screws of the LCD panel
8
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Figure 4-17 LCD panel To remove the LCD-panel, carry out the following steps: 1. Disconnect the cables [1] from the "L" and the "R" loudspeakers (see Figure "Loudspeaker cables"). 2. Important: Unplug the LVDS connector [2] on the LCD panel (see Figure "LVDS connector"), or better: remove the cable completely. Be careful, as this is a very fragile connector/cable! 3. Unplug the connectors [3] of the Side I/O panel, the Top Control panel, and the LED panel on the SSB (see Figure "SSB connectors for side I/O, side control panel, and LED"). 4. Unplug the connectors X520 and X530 [4] on the Power Supply board (see Figure "Connectors X520 and X530 and fixation screws on power supply panel"). 5. Loosen the fixation screws [5] from the power supply board, and put the power supply board a bit aside. 6. Loosen screws [6] and [7] (see Figure "Shield screws of the LCD panel"). 7. Lift the metal frame (together with all PWBs) from the LCD panel. Take care not to damage the fragile LVDS cable. 8. After removal of the metal frame, you can lift the LCD display [8] from its plastic frame (see Figure "LCD panel"). 9. If the plastic frame is damaged, replace it by a new frame, after removing the loudspeakers, the Side I/O panel, the Side Control panel, and the LED panel.
Service Modes, Error Codes, and Fault Finding
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5. Service Modes, Error Codes, and Fault Finding
Index of this chapter: 5.1 Test Points 5.2 Service Modes 5.3 Problems and Solving Tips Related to CSM 5.4 Service Tools 5.5 Error Codes 5.6 The Blinking LED Procedure 5.7 Fault Finding and Repair Tips 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 one of the "Service" jumpers on the TV board during cold start and apply mains (see Figures "Service jumper"). Then press the mains button (remove the short after startup). 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 schematics, test points are indicated with a rectangle box around Fxxx or Ixxx, in the layouts with a half-moon. 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) offer several features for the service technician, while the Customer Service Mode (CSM) is used for communication between the call centre and the customer. This chassis also offers the option of using ComPair, a hardware interface between a computer and the TV chassis. It offers the possibilities of structured troubleshooting, error code reading, and software version read-out for all chassis. Minimum requirements for ComPair: a Pentium processor, a Windows OS, and a CD-ROM drive (see also paragraph "ComPair").
SDM
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Figure 5-1 Service jumper (component side)
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: 475.25 MHz. · Colour system: PAL-BG. · 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).
SDM
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Figure 5-2 Service jumper (solder side)
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.
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Service Modes, Error Codes, and Fault Finding
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.
00035
HSD21E1 1.00/S21LXN 1.00
SDM
ERR 0 0 0 0 0 OP 152 167 015 081 252 127 019 00035 HSD21E1 1.00/S21LXN 1.00 ERR 0 0 0 0 0 OP 152 167 015 081 252 127 019 . Clear . Options . Tuner . White Tone . Audio . NVM Editor . SC NVM Editor . ComPair Mode Clear ? SAM
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On
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Figure 5-3 SDM menu 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; or press the following key sequence on the remote control transmitter: "062596" directly followed by the OSD button to switch to SAM (do not allow the display to time out between entries while keying the sequence). How to Exit Switch the set to STANDBY by pressing the mains button on the remote control transmitter or the television set. If you turn the television set off by removing the mains (i.e., unplugging the television) without using the mains button, the television set will remain in SDM when mains is re-applied, and the error buffer is not cleared. 5.2.2 Service Alignment Mode (SAM) Purpose · To change option settings. · To display / clear the error code buffer. · To perform alignments. Specifications · Operation hours counter (maximum five digits displayed). · Software version, Error codes, and Option settings display. · Error buffer clearing. · Option settings. · Software alignments (Tuner, White Tone, Geometry & Audio). · NVM Editor. · ComPair Mode switching. How to Enter To enter SAM, use one of the following methods: · Press the following key sequence on the remote control transmitter: "062596" directly followed by the OSD/ STATUS/INFO(I+) button (do not allow the display to time out between entries while keying the sequence). · Or via ComPair. Figure 5-4 SAM menu
Menu Explanation 1. LLLLL. This represents the run timer. The run timer counts normal operation hours, but does not count standby hours. 2. AAABCD X.YY. 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 read-out 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.
Service Modes, Error Codes, and Fault Finding
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 indicated. 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 button. · When you press the MENU key in while in a submenu, you will return to the previous menu. · On the TV, press and hold the VOLUME DOWN and press the CHANNEL DOWN for a few seconds, to switch from SAM to SDM and reverse; or press the following key sequence on the remote control transmitter: "062596" directly followed by the MENU button to switch to SDM (do not allow the display to time out between entries while keying the sequence). How to Store SAM Settings To store the settings changed in SAM mode, leave the top level SAM menu by using the POWER button on the remote control transmitter or the television set. How to Exit Switch the set to STANDBY by pressing the mains button on the remote control transmitter or the television set. If you turn the television set "off" by removing the mains (i.e., unplugging the television) without using the mains button, the television set will remain in SAM when mains is re-applied, and the error buffer is not cleared. 5.2.3 Customer Service Mode (CSM) Purpose The Customer Service Mode shows error codes and information on the TV's operation settings. The call centre can instruct the customer (by telephone) to enter CSM in order to identify the status of the set. This helps the call centre to diagnose problems and failures in the TV set before making a service call. The CSM is a read-only mode; therefore, modifications are not possible in this mode. How to Enter To enter CSM, press the following key sequence on the remote control transmitter: "123654" (do not allow the display to time out between entries while keying the sequence). Upon entering the Customer Service Mode, the following screen will appear:
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1 00035 HSD21E1 1.00/S21LXN 1.00 CSM 2 CODES 0 0 0 0 0 3 OP 152 167 015 081 252 127 019 4 26PF5321/10 5 AAAAAA/B.CC 6 NOT TUNED 7 PAL 8 STEREO 9 CO 50 CL 50 BR 50 0 AVL Off
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Figure 5-5 CSM menu Menu Explanation 1. Indication of the decimal value of the operation hours counter, Main/Scaler software version (see "Service 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. aaaaaa / b.ccc Firmware identification of the Pacific 3 and the OTC: aaaaaa = the firmware version of the Pacific 3 (Pixel+) b.ccc = the firmware version of the OTC (for the 1000 page TXT decoder). 6. Indicates the television is receiving an "IDENT" signal on the selected source. If no "IDENT" signal is detected, the display will read "NOT TUNED". 7. Displays the detected Colour system (e.g. PAL/NTSC). 8. Displays the detected Audio (e.g. stereo/mono). 9. Displays the picture setting information. 10. Displays the sound setting information. How to Exit To exit CSM, use one of the following methods: · Press the MENU button twice, or POWER button on the remote control transmitter. · Press the POWER button on the television set.
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 SMART PICTURE button on the remote control transmitter, or · The picture improves when you enter the Customer Service Mode,
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Service Modes, Error Codes, and Fault Finding
8. Press the MENU RIGHT key to store the new value. 9. Press the MENU key to exit the PERSONAL picture mode.
Then: 1. Press the SMART 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 select 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 value of the selected parameter. 7. Use the MENU UP/DOWN keys to select STORE. 8. Press the MENU RIGHT key to store the new value. 9. Press the MENU key to exit the PERSONAL picture mode. White Line around Picture Elements and Text If: The picture improves after you have pressed the SMART PICTURE button on the remote control transmitter, Then: 1. Press the SMART 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 select 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 SHARPNESS. 6. Press the MENU LEFT/RIGHT keys to increase or decrease the value of the selected parameter. 7. Use the MENU UP/DOWN keys to select STORE. 8. Press the MENU RIGHT key to store the new value. 9. Press the MENU key to exit the PERSONAL picture mode. 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 SMART PICTURE button on the remote control transmitter, Then: 1. Press the SMART 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 select 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 COLOUR. 6. Press the MENU LEFT/RIGHT keys to increase or decrease the value of the selected parameter. 7. Use the MENU UP/DOWN keys to select STORE.
5.4
5.4.1
Service Tools
ComPair Introduction ComPair (Computer Aided Repair) is a service tool for Philips Consumer Electronics products. ComPair is a further development on the European DST (service remote control), which allows faster and more accurate diagnostics. ComPair has three big advantages: 1. ComPair helps you to quickly get an understanding on how to repair the chassis in a short time by guiding you systematically through the repair procedures. 2. ComPair allows very detailed diagnostics (on 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. 3. ComPair speeds up the repair time since it can automatically communicate with the chassis (when the microprocessor is working) and all repair information is directly available. When ComPair is installed together with the Force/SearchMan electronic manual of the defective chassis, schematics and PWBs are only a mouse click away. Specifications ComPair consists of a Windows based fault finding program and an interface box between PC and the (defective) product. The ComPair interface box is connected to the PC via a serial (or RS-232) cable. For this chassis, the ComPair interface box and the TV communicate via a bi-directional service cable via the service connector(s). The ComPair fault finding program is able to determine the problem of the defective television. ComPair can gather diagnostic information in two ways: · Automatically (by communicating with the television): ComPair can automatically read out the contents of the entire error buffer. Diagnosis is done on 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 extent. 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.
Service Modes, Error Codes, and Fault Finding
How to Connect This is described in the chassis fault finding database in ComPair.
TO UART SERVICE CONNECTOR TO I2C SERVICE CONNECTOR
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Note: To use the LVDS tool, you must have ComPair release 2004-1 (or later) on your PC (engine version >= 2.2.05). For every TV type number and screen size, one must choose the proper settings via ComPair. The ComPair file will be updated regularly with new introduced chassis information. How to Order · LVDS tool (incl. two LVDS cables: 31p and 20p): 3122 785 90671. · LVDS tool Service Manual: 3122 785 00810. · LVDS cable 30p (for LC4.3): 3122 785 90821 (available soon). · LVDS cable 41p -> 31p for HD PDPs (dual -> single LVDS): 3122 785 90831 (available soon).
PC
VCR
Power 9V DC
I2C
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5.5
Figure 5-6 ComPair interface connection How to Order · ComPair order codes (EU/AP/LATAM): · Starter kit ComPair32/SearchMan32 software and ComPair interface (excl. transformer): 3122 785 90450. · ComPair interface (excl. transformer): 4822 727 21631. · Starter kit ComPair32 software (registration version): 3122 785 60040. · Starter kit SearchMan32 software: 3122 785 60050. · ComPair32 CD (update): 3122 785 60070 (year 2002), 3122 785 60110 (year 2003 onwards). · SearchMan32 CD (update): 3122 785 60080 (year 2002), 3122 785 60120 (year 2003), 3122 785 60130 (year 2004). · ComPair firmware upgrade IC: 3122 785 90510. · Transformer (non-UK): 4822 727 21632. · Transformer (UK): 4822 727 21633. · ComPair interface cable: 3122 785 90004. · ComPair interface extension cable: 3139 131 03791. · ComPair UART interface cable: 3122 785 90630. Note: If you encounter any problems, contact your local support desk. 5.4.2 LVDS Tool Introduction This service tool (also called "ComPair Assistant 1") may help you to identify, in case the TV does not show any picture, whether the Small Signal Board (SSB) or the display of a Flat TV is defective. Furthermore it is possible to program EPLDs with this tool (Byte blaster). Read the user manual for an explanation of this feature. Since 2004, the LVDS output connectors in our Flat TV models are standardised (with some exceptions). With the two delivered LVDS interface cables (31p and 20p) you can cover most chassis (in special cases, an extra cable will be offered). When operating, the tool will show a small (scaled) picture on a VGA monitor. Due to a limited memory capacity, it is not possible to increase the size when processing high-resolution LVDS signals (> 1280x960). Below this resolution, or when a DVI monitor is used, the displayed picture will be full size. Generally this tool is intended to determine if the SSB is working or not. Thus to determine if LVDS, RGB, and sync signals are okay. How to Connect Connections are explained in the user manual, which is packed with the tool. 5.5.3
Error Codes
The error code buffer contains all errors detected since the last time the buffer was erased. The buffer is written from left to right. When an error occurs that is not yet in the error code buffer, it is displayed at the left side and all other errors shift one position to the right.
5.5.1
How to Read the Error Buffer You can read the error buffer in 3 ways: · On screen via the SAM (if you have a picture). Examples: ERROR: 0 0 0 0 0 : No errors detected ERROR: 6 0 0 0 0 : Error code 6 is the last and only detected error ERROR: 9 6 0 0 0 : Error code 6 was detected first and error code 9 is the last detected (newest) error · Via the blinking LED procedure (when you have no picture). See "The Blinking LED Procedure". · Via ComPair.
5.5.2
How to Clear the Error Buffer The error code buffer is cleared in the following cases: · By using the CLEAR command in the SAM menu: To enter SAM, press the following key sequence on the remote control transmitter: "062596" directly followed by the OSD/i+ button (do not allow the display to time out between entries while keying the sequence). Make sure the menu item CLEAR is selected. 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. 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).
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Service Modes, Error Codes, and Fault Finding
Table 5-1 Error code overview Error Error Description 0 1 2 3 4 No Error Mis-match of TV (Hercules) SW and Scaler SW +12V from PSU error Plasma I2C error (only for plasma sets) I2C error while communicating with the Genesis Scaler +5V protection Software versions PSU N.A. 7801 N.A. A N.A. B7 + B8 Check Item Diagram Example of error buffer: 12 9 6 0 0 After entering SDM, the following occurs: · 1 long blink of 5 seconds to start the sequence, · 12 short blinks followed by a pause of 1.5 seconds, · 9 short blinks followed by a pause of 1.5 seconds, · 6 short blinks followed by a pause of 1.5 seconds, · 1 long blink of 1.5 seconds to finish the sequence, · The sequence starts again with 12 short blinks.
5.7
Fault Finding and Repair Tips
Notes: · It is assumed that the components are mounted correctly with correct values and no bad solder joints. · Before any fault finding actions, check if the correct options are set.
5 6
7752
B6 B1 + B18 + B19
General I2C error; 1102, 7L01, 7M00 communication between ADC, analogue tuner, and/or Columbus I2C failed I2C error while communicating with ADC I2C error while communicating with the Scaler EEPROM 7L01 7C01
7 8
B18 B11
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 / HDMI functionality of the TV set! · Always note down the existing NVM settings, before changing the settings. This will enable you to return to the original settings, if the new settings turn out to be incorrect. Table 5-2 NVM editor overview Hex Dec 10 0 Store? Description Existing value New value
9
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. I2C error while 1102 communicating with the PLL tuner I2C error while communicating with the 3D combfilter IC-7M00 (Columbus) I2C error while communicating with iBoard uP (only iTV sets) 7M00
B2
10
B1
11
B19
12
N.A.
N.A.
.ADR .VAL .Store
0x000A 0x0000
13
I2C error while N.A. communicating with the HDMI decoder IC-7D03 (only for NAFTA and AP) Read-write error with the Scaler SDRAM 7B01
N.A.
14 15 16
B10 T B20 + B21 N.A.
I2C error while 7001 communicating with the OTC 7N00 I2C error while communicating with EPLD or Pacific III I2C error while N.A. communicating with the Digital Module (only for digital sets)
17
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.
Service Modes, Error Codes, and Fault Finding
Table 5-3 NVM Default values (option bit settings through NVM Editor in SAM Mode)
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Byte Nr.
Bit
Feature/Mode
Description
Byte 0 174(dec)
0 1 2 3 4 5 6 7
QSS (LSB) FMI HCO HP2 FSL TFR OSVE 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)
26PF5321/10/12 32PF5321/10/12 37PF5321/10/12 26PF7321/12 32PF7321/12 37PF7321/10/12 42PF5421/10 1 1 0 1 1 1 0 0 59 3B
Byte 1 175(dec)
0 1 2 3 4 5 6 7
PSE OPC PRIS CONTINUOUS FACTORY WHITE PATTERN ON SDM MODE SAM MODE SVMA Total Dec Values Total Hex Values
PSE OPC PRIS Continuous factory mode Last colour pattern status in factory mode Service default mode on/off Service Align mode on/off Scavem On / Off
0 0 0 1 0 0 0 0 8 08
Byte 2 176(dec)
0 1 2 3 4 5 6 7
MUTE STATUS TUNER AUTO MODE CABLE MODE LAST POWER MODE CHILD LOCK MODE SURF MODE FACTORY MODE PSNS Total Dec Values Total Hex Values
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 colour enhancement in ES4
0 1 0 1 0 0 1 1 202 CA
Byte 3 177(dec)
0 1 2 3 4 5 6 7
RADIO/TV MODE WAKE-UP MODE HOTEL MODE HOTEL KBD LOCK HBL BLS SL CFA0 Total Dec Values Total Hex Values
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
Byte 4 178(dec)
0 1 2 3 4 5 6 7
Signal Strength LPG DVD TRAY LOCK SCRSAVER MODE BKS BSD CRA0 PIP QSS Total Dec Values Total Hex Values
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 0 120 78
Byte 5 179(dec)
0 1 2 3 4 5 6 7
FFI NNR MUS GAM CBS LLB DSA 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
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Service Modes, Error Codes, and Fault Finding
26PF5321/10/12 32PF5321/10/12 37PF5321/10/12 26PF7321/12 32PF7321/12 37PF7321/10/12 42PF5421/10 0 0 0 0 0 0 0 0 0 00 Hotel_IconMode DBE SD Set_in_PC_Sleep_Mode Reserved Reserved Reserved Reserved 0 1 0 0 1 0 0 0 18 12
Byte Nr.
Bit
Feature/Mode
Description
Byte 6 180(dec)
0 1 2 3 4 5 6 7
LTI status Inc_Life_Time PC_Mode HD_Mode Tact_Switch Set_In_Special_Stby Hotel_OSDDisplay 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
Byte 7 181(dec)
0 1 2 3 4 5 6 7
Hotel_IconMode DBE SD Set_in_PC_Sleep_Mode Reserved Reserved Reserved Reserved Total Dec Values Total Hex Values
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 an SDM jumper (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. 5.7.5 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.
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. Video Processing No Power 1. Check +12 V and 3V3 at position 1J02. 2. If no supply, first check the connector 1J02. 3. If the connector 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 fault finding 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
5.7.3
Flash New Scaler Software When you need to flash new scaler software, follow the instructions in ComPair. Make sure you put the set in one of the Service Modes, SDM/SAM/CSM, before you start flashing. This reduces the risk of the set hanging during the flashing procedure.
5.7.4
Tuner and IF No Picture in RF Mode, but there is a Noise Raster 1. Check whether picture is present in AV. If not, go to Video processing troubleshooting section. 2. If present, check if the Option settings are correct. 3. Check if all the supply voltages are present (3.3/5/8/12/33 V). 4. Check if the I2C lines are working correctly (3.3 V).
Service Modes, Error Codes, and Fault Finding
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. 5.7.6 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. 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%.
LC4.31E AA
5.
EN 21
EN 22
5.
LC4.31E AA
Service Modes, Error Codes, and Fault Finding
Personal Notes:
E_06532_012.eps 131004
Block Diagrams, Test Point Overviews, and Waveforms
LC4.31E AA
6.
23
6. Block Diagrams, Test Point Overviews, and Waveforms
Wiring Diagram 26" & 32"
WIRING 26"- 32"
8903
8903
INVERTER
3P X220
RIGHT SPEAKER
POWER SUPPLY
LVDS CONNECTION TO DISPLAY
30P
LEFT SPEAKER
INVERTER
8P06 X200
C
INVERTER
3P 1003 4P 1001 8J03 1002 9P
8J04
CLASS D AUDIO AMPLIFIER
12P
8J02
X530
30P 31P
1P06
12P
1J02
3P 1J03
9P 1J04(1M52)
1K00(1M21) 6P
12P
8520 X520 1K01(1M06) 12P
12P
D
SIDE AV KEYBOARD CONTROL
6P
1870
G_16210_058.eps 010206
14P
8520
14P
8K01
1K02 3P
8684
X002
TUNER
POWER IN
2P3
1304 (1M06)
12P
8002
AC POWER INLET
J
IR/LED/LIGHT SENSOR
E
3P 1684
B
SSB
8870
Block Diagrams, Test Point Overviews, and Waveforms
LC4.31E AA
6.
24
Wiring Diagram 37"
WIRING 37"
8902 8304 8309
8903 8302
8520
LCD PANEL
3P 1736 1306 2P3
8306 3P 1309 4P 1304
3P 1735
7P 1M02
RIGHT SPEAKER
SA STANDBY
1739 9P 7P 1M02 1304 4P
1307 4P
1305 3P
LEFT SPEAKER
8305
A LCD SUPPLY
1M46 11P 1M03 10P
12P 1316
14P 1319 12P 1317
1309 3P
TO DISPLAY LVDS
INVERTER
INVERTER
8521 8337 8322 8P06 8101
12P 1K00 6P
8J04
14P
30P 1N17
11P 1J01
1442 14P
10P 1J00
B SSB T
1000 14P
8870
E KEYBOARD CONTROL
OTCFLASH
1N20 3P
1K04 11P
8000
8K01
3P 1305
2P3 1306
3P 1J03
9P 1J04
D
1308 2P3
SIDE AV
TUNER
1K02 3P
8002
1M01 3P
AC INLET
8187 (8188UK)
J
LED PANEL
6P 0345
11P 1M36
G_16210_059.eps 180506
Block Diagrams, Test Point Overviews, and Waveforms
LC4.31E AA
6.
25
Wiring Diagram 42"
WIRING 42" LCD
8736 8302 8317 8304 8309 8303 8320 2P3 2P3 2P3 1738 1735 1736
1306 2P3
SA STANDBY / AUDIO
8306 7P 1M02 4P 1303 4P 1304 3P 1309
8735
1307 4P
8307
7P 1M02
9P 1739
1305 3P
1304 4P
8305
1303 4P
LCD PANEL
LVDS 30P 1M46 11P 4P 1M10 1M03 10P
1309 3P
A MF + SUPPLY
INVERTER LEFT SPEAKER
1316 12P
1319 14P
14P
RIGHT SPEAKER
8319 8150 8146 8152 2P3 1306 8103 4P 1307 12P 3P 1C05 8120
3P 1B06
1305 3P
31P 1N17
11P 1J01(1M46)
1320 3P
INVERTER
10P 1J00(1M03)
9P 1J04(1M52) 1K00(1M21) 6P
1420
E CONTROL BOARD
1K02 1K04(1M06) 3P 11P
T
1000 14P
OTCFLASH
8000 1103 3P
1442 14P
B SSB
8136
3P 1320
D SIDE I/O
1308 2P 11P 1M36 8308
Tuner
1177 3P
1151 3P
UART Compair
J
AC INLET
1M01 3P
LED SWITCH PANEL
6P 0345
8101
G_16210_101.eps 190506
Block Diagrams, Test Poi