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Colour Television
Chassis
LC7.1E
LA
ME7
H_16940_000.eps 080307
Contents
Page
Contents
Page
1. Technical Specifications, Connections, and Chassis Overview 2 2. Safety Instructions, Warnings, and Notes 6 3. Directions for Use 8 4. Mechanical Instructions 9 5. Service Modes, Error Codes, and Fault Finding 16 6. Block Diagrams, Test Point Overview, and Waveforms Wiring Diagram 32" 27 Wiring Diagram 37"-42" 28 Block Diagram Supply 29 Block Diagram Video 30 Block Diagram Audio 31 Block Diagram Control & Clock Signals 32 Test Point Overview SSB (Bottom Side) 33 I2C IC's Overview 34 Supply Lines Overview 35 7. Circuit Diagrams and PWB Layouts Diagram SSB: DC/DC (B02) 36 SSB: Tuner & Demodulator (B03A) 37 SSB: Micro Processor (B04A) 43 SSB: Video Processor (B04B) 44 SSB: PNX2015: Audio Processor (B04C) 45 SSB: YPBPR & Rear IO (B06A) 46 SSB: I/O Scart 1 & 2 (B06B) 47 SSB: HDMI (B06C) 48 SSB: Headphone Amp & Muting (B06D) 49 SSB: Audio (B07) 50 SSB: SRP List 51 Side A/V Panel (D) 62 Keyboard Control Panel (E) 64 Front IR / LED Panel (J) 66 8. Alignments 69
9. Circuit Descriptions, Abbreviation List, and IC Data Sheets 73 Abbreviation List 80 IC Data Sheets 83 10. Spare Parts List 88 11. Revision List 92
PWB 52-61 52-61 52-61 52-61 52-61 52-61 52-61 52-61 52-61 52-61 52-61 63 65 67
© Copyright 2007 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 0763 BG CD Customer Service
Printed in the Netherlands
Subject to modification
EN 3122 785 16940
EN 2
1.
LC7.1E LA
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).
1.1
1.1.1
Technical Specifications
Vision Display type Screen size Resolution (HxV pixels) Min. contrast ratio Min. light output (cd/m2) Typ. response time (ms) Viewing angle (HxV degrees) Tuning system TV Colour systems Video playback : : : : : : : : : : : : : : : : : : : : : : : : : : : : LCD 32" (82 cm), 16:9 42" (107 cm), 16:9 1366 x 768 4000:1 (32") 5000:1 (42") 500 8 (32") 5 (42") 178x178 PLL PAL B/G, D/K, I SECAM B/G, D/K, L/L' NTSC PAL SECAM WXGA (1366x768) 640x480i - 1fH 720x576i - 1fH 640x480p - 2fH 720x576p - 2fH 1920x1080i - 2fH 1280x720p - 3fH 100 presets VHF UHF S-band Hyper-band
Supported computer formats Supported video formats
Presets/channels Tuner bands
1.1.2
Sound Sound systems Equalizer Maximum power (WRMS) : : : : NICAM D/K, I, L/L' 2CS D/K, B/G 7-bands 2 x 10
1.1.3
Miscellaneous Power supply: - Mains voltage (VAC) - Mains frequency (Hz) Ambient conditions: - Temperature range (°C) - Maximum humidity
: 220 - 240 : 50 / 60
: +5 to +40 : 90% R.H.
Power consumption (values are indicative) - Normal operation (W) : 140 (32") : 240 (42") - Stand-by (W) : <1 Dimensions (WxHxD cm) : 80.5x54.6x11.5 (32") : 104.5x68.6x11.6 (42") : 15.5 (32") : 25 (42")
Weight (kg)
Technical Specifications, Connections, and Chassis Overview 1.2 Connection Overview
LC7.1E LA
1.
EN 3
H_16940_005.eps 270207
Figure 1-1 Side and rear I/O connections Note: The following connector colour abbreviations are used (acc. to DIN/IEC 757): Bk= Black, Bu= Blue, Gn= Green, Gy= Grey, Rd= Red, Wh= White, and Ye= Yellow. 1.2.1 Side Connections EXT3: Headphone - Out Bk - Headphone 32 - 600 ohm / 10 mW EXT3: Cinch: Video CVBS - In, Audio - In Rd - Audio R 0.5 VRMS / 10 kohm Wh - Audio L 0.5 VRMS / 10 kohm Ye - Video CVBS 1 VPP / 75 ohm EXT3: 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 VPPP / 75 ohm 1.2.2 Rear Connections EXT1: Video RGB - In, CVBS - In/Out, Audio - In/Out Figure 1-3 SCART connector 10 11 12 13 14 15 16 17 18 19 20 21 - Easylink P50 - Video Green - n.c. - Ground Red - Ground P50 - Video Red - Status/FBL - Ground Video - Ground FBL - Video CVBS - Video CVBS - Shield 0 - 5 V / 4.7 kohm 0.7 VPP / 75 ohm Gnd Gnd 0.7 VPP / 75 ohm 0 - 0.4 V: INT 1 - 3 V: EXT / 75 ohm Gnd Gnd 1 VPP / 75 ohm 1 VPP / 75 ohm Gnd jk j H H j j H H k j H
rt
jq jq jq
EXT2: Video YC - In, CVBS - In/Out, Audio - In/Out H H j j
20
2
21
E_06532_001.eps 050404
1
20
2
1 2 3 4 5 6 7 8 k j k H H j j j H - Audio R - Audio R - Audio L - Ground Audio - n.c. - Audio L - C-out - Function Select 0.5 VRMS / 1 kohm 0.5 VRMS / 10 kohm 0.5 VRMS / 1 kohm 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 0 - 5 V / 4.7 kohm k j k H j k j jk
21
E_06532_001.eps 050404
1
Figure 1-2 SCART connector 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 / 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
9 10 11 12 13 14 15 16
- n.c. - Easylink P50 - n.c. - n.c. - n.c. - Ground P50 -C - Status/FBL
9
- Ground Green
17 - Ground Video
Gnd 0.7 VPP / 75 ohm 0 - 0.4 V: INT 1 - 3 V: EXT / 75 ohm Gnd
H j j H
EN 4
18 19 20 21
1.
- Ground FBL - Video CVBS - Video CVBS/Y - Shield
LC7.1E LA
Gnd 1 VPP / 75 ohm 1 VPP / 75 ohm Gnd
Technical Specifications, Connections, and Chassis Overview
H k j H 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
Service Connector (UART) 1 - UART_TX Transmit 2 - Ground Gnd 3 - UART_RX Receive Aerial - In - - IEC-type (EU)
k H j
Coax, 75 ohm
D
Service Connector (ComPair) 1 - SDA-S I2C Data (0 - 5 V) 2 - SCL-S I2C Clock (0 - 5 V) 3 - Ground Gnd HDMI 1 & 2: Digital Video, Digital Audio - In
19 18 1 2
E_06532_017.eps 250505
jk j H
DDC clock DDC data Gnd Hot Plug Detect Gnd
Figure 1-4 HDMI (type A) connector
EXT4: Cinch: Video YPbPr - In, Audio - In Gn - Video Y 1 VPP / 75 ohm Bu - Video Pb 0.7 VPP / 75 ohm Rd - Video Pr 0.7 VPP / 75 ohm Wh - Audio L 0.5 VRMS / 10 kohm Rd - Audio R 0.5 VRMS / 10 kohm
jq jq jq jq jq
1.3
Chassis Overview
SIDE I/O PANEL
D
POWER SUPPLY UNIT
CONTROL BOARD
E J
B
SMALL SIGNAL BOARD LED PANEL
G_16860_047.eps 310107
Figure 1-5 PWB/CBA locations (32" models)
Technical Specifications, Connections, and Chassis Overview
LC7.1E LA
1.
EN 5
SIDE I/O PANEL
D
POWER SUPPLY UNIT
CONTROL PANEL
E J
B
SMALL SIGNAL BOARD LED PANEL
H_16940_008.eps 050307
Figure 1-6 PWB/CBA locations (42" models)
EN 6
2.
LC7.1E LA
Safety Instructions, Warnings, and Notes
2. Safety Instructions, Warnings, and Notes
Index of this chapter: 2.1 Safety Instructions 2.2 Warnings 2.3 Notes · 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. Manufactured under license from Dolby Laboratories. "Dolby", "Pro Logic" and the "double-D symbol", are trademarks of Dolby Laboratories.
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 (= x10-6), nano-farads (n= x10-9), or pico-farads (p= x10-12). Capacitor values may also use the value multiplier as the decimal point indication (e.g. 2p2 indicates 2.2 pF). An "asterisk" (*) indicates component usage varies. Refer to the diversity tables for the correct values. The correct component values are listed in the Spare Parts List. Therefore, always check this list when there is any doubt.
·
· · · ·
2.3.3
BGA (Ball Grid Array) ICs Introduction 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. BGA Temperature Profiles 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.
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.
2.3.4
Lead-free Soldering 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 stabilize 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 stabilized 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
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
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.
LC7.1E LA
2.
EN 7
·
2.3.5
Alternative BOM identification The third digit in the serial number (example: AG2B0335000001) indicates the number of the alternative B.O.M. (Bill Of Materials) that has been used for producing the specific TV set. In general, it is possible that the same TV model on the market is produced with e.g. two different types of displays, coming from two different suppliers. This will then result in sets which have the same CTN (Commercial Type Number; e.g. 28PW9515/12) but which have a different B.O.M. number. By looking at the third digit of the serial number, one can identify which B.O.M. is used for the TV set he is working with. If the third digit of the serial number contains the number "1" (example: AG1B033500001), then the TV set has been manufactured according to B.O.M. number 1. If the third digit is a "2" (example: AG2B0335000001), then the set has been produced according to B.O.M. no. 2. This is important for ordering the correct spare parts! For the third digit, the numbers 1...9 and the characters A...Z can be used, so in total: 9 plus 26= 35 different B.O.M.s can be indicated by the third digit of the serial number. Identification: The bottom line of a type plate gives a 14-digit serial number. Digits 1 and 2 refer to the production center (e.g. AG is Bruges), digit 3 refers to the B.O.M. code, digit 4 refers to the Service version change code, digits 5 and 6 refer to the production year, and digits 7 and 8 refer to production week (in example below it is 2006 week 17). The 6 last digits contain the serial number.
MODEL : 32PF9968/10
MADE IN BELGIUM 220-240V ~ 50/60Hz 128W VHF+S+H+UHF
PROD.NO: AG 1A0617 000001
S
Figure 2-1 Serial number (example) 2.3.6
BJ3.0E LA
E_06532_024.eps 130606
Board Level Repair (BLR) or Component Level Repair (CLR) If a board is defective, consult your repair procedure to decide if the board has to be exchanged or if it should be repaired on component level. If your repair procedure says the board should be exchanged completely, do not solder on the defective board. Otherwise, it cannot be returned to the O.E.M. supplier for back charging!
2.3.7
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.
·
EN 8
3.
LC7.1E LA
Directions for Use
3. Directions for Use
You can download this information from the following websites: http://www.philips.com/support http://www.p4c.philips.com
Mechanical Instructions
LC7.1E LA
4.
EN 9
4. Mechanical Instructions
Index of this chapter: 4.1 Cable Dressing 4.2 Service Positions 4.3 Assy/Panel Removal 4.4 Set Re-assembly Notes: · Figures below can deviate slightly from the actual situation, due to the different set executions. · Follow the disassemble instructions in described order. They apply to the 32" sets.
4.1
Cable Dressing
G_16860_064.eps 310107
Figure 4-1 Cable dressing (32" models)
EN 10
4.
LC7.1E LA
Mechanical Instructions
H_16940_009.eps 050307
Figure 4-2 Cable dressing (42" models)
Mechanical Instructions 4.2 Service Positions
For easy servicing of this set, there are a few possibilities created: · The buffers from the packaging. · Foam bars (created for Service). · Aluminium service stands (created for Service). Note: the aluminium service stands can only be used when the set is equipped with so-called "mushrooms". Otherwise use the original stand that comes with the set. 4.2.1 Foam Bars 4.2.2
LC7.1E LA
4.
EN 11
Aluminium Stands
E_06532_019.eps 170504
1
Figure 4-4 Aluminium stands (drawing of MkI) The new MkII aluminium stands (not on drawing) with order code 3122 785 90690, can also be used to do measurements, alignments, and duration tests. The stands can be (dis)mounted quick and easy by means of sliding them in/out the "mushrooms". The new stands are backwards compatible with the earlier models. Important: For (older) FTV sets without these "mushrooms", it is obligatory to use the provided screws, otherwise it is possible to damage the monitor inside!
1
Required for sets 42"
4.3
4.3.1
Assy/Panel Removal
Rear Cover Warning: Disconnect the mains power cord before you remove the rear cover. 1. Place the TV set upside down on a table top, using the foam bars (see part "Service Position"). 2. Remove rear cover screws and the stand (if mounted). 3. Remove rear cover.
E_06532_018.eps 171106
4.3.2
Keyboard Control Panel 1. Remove the rear cover, as described earlier. 2. Refer to fig. "Keyboard control panel" below. 3. Remove the T10 parker screws [1]. 4. Unplug connector [2]. 5. Remove the unit. 6. Release clips [3] and remove the board. When defective, replace the whole unit.
Figure 4-3 Foam bars The foam bars (order code 3122 785 90580 for two pieces) can be used for all types and sizes of Flat TVs. See figure "Foam bars" for details. Sets with a display of 42" and larger, require four foam bars [1]. Ensure that the foam bars are always supporting the cabinet and never only the display. Caution: Failure to follow these guidelines can seriously damage the display! By laying the TV face down on the (ESD protective) foam bars, a stable situation is created to perform measurements and alignments. By placing a mirror under the TV, you can monitor the screen.
EN 12
4.
LC7.1E LA
Mechanical Instructions
1
c
3
2 1
G_16860_075.eps 010207
G_16850_007.eps 090207
Figure 4-5 Keyboard control panel Figure 4-7 Side I/O panel [1/3] top side 4.3.3 Side I/O Panel 1. Remove the rear cover, as described earlier. 2. Unplug connector [a]. 3. Remove screws [b] and remove the complete module. One of the screws is T10 tapping, the other one is T10 parker. See fig. "Side I/O module". 4. Remove T10 parker screw [c]. See fig. "Side I/O panel 1". 5. Push catch [d] (located at the underside of the bracket) and slide the unit to the right from its bracket [e]. See fig. "Side I/O panel 2". 6. To remove the PWB from its bracket, you have to lift the catch [f] loacted on top of the headphone connector. At the same time, slide the PWB out of its bracket [g]. See fig. "Side I/O panel 3". When defective, replace the whole unit.
d 2
e 2
b (1x)
G_16860_076.eps 010207
Figure 4-8 Side I/O panel [2/3] bottom side
a
b (1x)
G_16860_066.eps 010207
Figure 4-6 Side I/O module
Mechanical Instructions
4.3.5
LC7.1E LA
4.
EN 13
Mid-range Speakers 1. 2. 3. 4. Remove the rear cover, as described earlier. Refer to fig. "Mid-range speakers" below. Unplug connectors [1]. Remove T10 parker screws [2].
g 2
f
2
1
2
G_16850_010.eps 110107
Figure 4-11 Mid-range speakers 4.3.6
G_16860_077.eps 010207
Tweeters 1. 2. 3. 4. Remove the rear cover, as described earlier. Refer to fig. "Tweeters" below. Unplug connectors [1]. Remove T10 parker screws [2].
Figure 4-9 Side I/O panel [3/3] 4.3.4 IR/LED Panel 1. Remove the rear cover, as described earlier. 2. Refer to fig. "IR/LED panel" below. 3. Unplug connector(s) [1]. 4. Release clip [2] and remove the board. When defective, replace the whole unit.
2
1
G_16850_011.eps 110107
1
Figure 4-12 Tweeters
2
4.3.7
Small Signal Board (SSB) 1. 2. 3. 4. Remove the rear cover, as described earlier. Refer to fig. "SSB removal" below. Disconnect all cables [a] on the SSB. Remove the T10 tapping screws [b] that hold the SSB. See Figure "SSB removal". 5. Remove the screws that hold the CINCH and HDMI connectors at the connector panel. 6. Lift the SSB from the set.
G_16850_009.eps 110107
Figure 4-10 IR/LED panel
b (3x) a b (3x) a b (2x) b (2x)
G_16860_074.eps 010207
Figure 4-13 SSB removal
EN 14
4.3.8
4.
LC7.1E LA
Mechanical Instructions
4.3.9 LCD Panel 1. Remove the rear cover, as described earlier. 2. Refer to fig. "LCD panel" below. 3. Unplug the connectors on the Main Supply Panel [a] and the LED & IR board [c]. 4. Unplug the outer connectors [d] from the mid-range loudspeakers. 5. Do NOT forget to unplug the LVDS connector [e] from the SSB. Important: Be careful, as this is a very fragile connector! 6. Remove T10 parker screw [b] that holds the Side I/O module bracket. 7. Remove T10 parker screws [f] of the central sub-frame. 8. Remove LCD panel fixation screws [g] and lift the complete central sub-frame from the set (incl. the PSU, SSB, and Side I/O boards and wiring). 9. Lift the LCD panel [7] from the front cabinet.
Main Supply Panel 1. 2. 3. 4. 5. Remove the rear cover, as described earlier. Refer to fig. "Main supply panel" below. Unplug cables [a]. Remove the fixation screws [b]. Take the board out (it hinges at the left side).
b (3x) a
a
a
G_16860_065.eps 010207
Figure 4-14 Main supply panel
f (1x)
g (2x)
e a
g (2x)
b f (3x) d f (2x) d c (1x)
G_16860_067.eps 310107
Figure 4-15 LCD panel [1/2]
Mechanical Instructions
LC7.1E LA
4.
EN 15
7
G_16850_015.eps 110107
Figure 4-16 LCD panel [2/2]
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 position. See figure "Cable dressing". · Pay special attention not to damage the EMC foams. Ensure that EMC foams are mounted correctly (one is located above the LVDS connector on the display, between the LCD display and the metal sub-frame).
EN 16
5.
LC7.1E LA
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 Service Tools 5.4 Error Codes 5.5 The Blinking LED Procedure 5.7 Fault Finding and Repair Tips 5.2.1 General Some items are applicable to all Service Modes or are general. These are listed below. Life Timer During the life time cycle of the TV set, a life timer is kept. This life timer counts the normal operation hours, but not the Standby hours. The actual value of the life timer is displayed in SDM and CSM in a decimal value. Every two soft-resets should increase the hour by +1. Minimal five digits are displayed. Software Identification, Version, and Cluster The software identification, version, and cluster will be shown in the main menu display of SDM, SAM, and CSM. The screen will show: "AAAABCD X.YY", where: · AAAA is the chassis name: LC71 for analogue range (non-DVB), LC72 for digital range (DVB). · B is the region indication: E= Europe, A= AP/China, U= NAFTA, L= LATAM. · C is the display indication: L= LCD, P= Plasma. · D is the language/features indication: 1= standard, H= 1080p full HD. · X is the main version number: The main version number is updated with a major change of specification (incompatible with the previous software version). Numbering will go from 1 - 9 then from A - Z. If the main version number changes, the new version number is written in the NVM If the main version number changes, the default settings are loaded · YY is the sub version number: The sub version number is updated with a minor change (backwards compatible with the previous versions) Numbering will go from 00 - 99. If the sub version number changes, the new version number is written in the NVM If the NVM is fresh, the software identification, version, and cluster will be written to NVM
5.1
Test Points
In the chassis schematics and layout overviews, the test points (Fxxx) are mentioned. In the schematics, test points are indicated with a rectangular box around "Fxxx" or "Ixxx", in the layout overviews with a "half-moon" sign. As most signals are digital, it will be difficult to measure waveforms with a standard oscilloscope. Several key ICs are capable of generating test patterns, which can be controlled via ComPair. In this way it is possible to determine which part is defective. Perform measurements under the following conditions: · Service Default Mode. · Video: Colour bar signal. · Audio: 3 kHz left, 1 kHz right.
5.2
Service Modes
The Service Mode feature is split into four parts: · Service Default Mode (SDM). · Service Alignment Mode (SAM). · Customer Service Mode (CSM) and Digital Customer Service Mode (DCSM). · Computer Aided Repair Mode (ComPair). SDM and SAM offer features, which can be used by the Service engineer to repair/align a TV set. Some features are: · A pre-defined situation to ensure measurements can be made under uniform conditions (SDM). · Activates the blinking LED procedure for error identification when no picture is available (SDM). · The possibility to overrule software protections when SDM was entered via the Service pins. · Make alignments (e.g. white tone), (de)select options, enter options codes, reset the error buffer (SAM). · Display information ("SDM" or "SAM" indication in upper right corner of screen, error buffer, software version, operating hours, options and option codes, submenus). The (D)CSM is a Service Mode that can be enabled by the consumer. Instructions on how to enable the CSM can be given by telephone by either the dealer or the P3C (Philips Customer Care Center). The CSM displays diagnosis information, which the customer can forward to the dealer/P3C. In CSM mode, "CSM", is displayed in the top right corner of the screen. The information provided in CSM and the purpose of CSM is to: · Increase the home repair hit rate · Decrease the number of nuisance calls · Solved customers' problem without home visit ComPair Mode is used for communication between a computer and a TV on I2C /UART level and can be used by a Service engineer to quickly diagnose the TV set by reading out error codes, read and write in NVMs, communicate with ICs and the uP (PWM, registers, etc.), and by making use of a faultfinding database. It will also be possible to up and download the software of the TV set via I2C with help of ComPair. To do this, ComPair has to be connected to the TV set via the ComPair connector, which will be accessible through the rear of the set (without removing the rear cover).
Service Modes, Error Codes, and Fault Finding
Display Option Code Selection When after a display exchange, the display option code is not properly set, it will result in a TV with "no display". Therefore, it is required to set this display option code after such a repair. To do so, press the following key sequence on a standard RC transmitter: "062598" directly followed by MENU and "xxx", where "xxx" is a 3 digit decimal value of the panel type (see first column in table "Display Code Overview" or sticker on the side/ bottom of the cabinet). When the value is properly accepted and stored in NVM, the set will switch to Stand-by, to indicate that the process has been completed successfully.
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During this algorithm, the NVM-content must be filtered, because several items in the NVM are TV-related and not SSBrelated (e.g. Model and Prod. S/N). Therefore, "Model" and "Prod. S/N" data is changed into "See Type Plate". In case a call centre or consumer reads "See Type Plate" in CSM mode, he needs to look to the side/bottom sticker to identify the set, for further actions.
Display Option Code
39mm
PHILIPS
27mm
040
MODEL: 32PF9968/10
PROD.SERIAL NO: AG 1A0620 000001
(CTN Sticker)
E_06532_038.eps 290107
Figure 5-1 Location of Display Option Code sticker Table 5-1 Display option code overview Display option 045 046 068 069 070 071 072 073 076 083 085 091 093 103 105 106 107 Display HEX type 2D 2E 44 45 46 47 48 49 4B 53 55 5B 5D 67 69 6A 6B LCD LCD LCD LCD LCD LCD LCD LCD LCD PDP PDP LCD LCD LCD LCD LCD LCD Vert. Brand Size resolution LPL LPL CMO CMO CPT LPL AUO LPL AUO SDI SDI AUO LPL LPL CMO AUO LPL 26 32 26 32 32 37 37 42 42 42 50 32 42 20 19 23 42 768p 768p 768p 768p 768p 768p 768p 768p 768p 768p 768p 768p 1080p 480p 900p 768p 768p Hor. resolution 1366 1366 1366 1366 1366 1366 1366 1366 1366 1024 1366 1366 1920 640 1440 1366 1366
Type number LC260WX2-SLB2 LC320W01-SL06 V260B1-L03 V315B1 L05 CLLAA320WB02P LC370WX1-SLB1 T370XW02V5 LC420WX3-SLA1 T420XW01V8 S42AX-YD04(PS-426-PH) S50HW-YD05(PS-506-PH) T315XW02VD LC420WU2-SLA1 LC201V02-SDB1 TPM190A1-L02 T230XW01V3 LC420WX5-SLD1
12 NC 9322 234 13682 9322 230 03682 9322 249 37682 9322 248 65682 9322 245 31682 9322 246 96682 9322 249 77682 9322 246 97682 9322 249 10682 9322 246 76682 9322 246 81682 9322 249 06682 9322 246 84682 9322 242 65682 9965 000 43654 9322 249 79682 9322 249 09682
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5.2.2
5.
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Service Modes, Error Codes, and Fault Finding
On Screen Menu After activating 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.
S D M HHHHH A A A A B C D - X . Y Y E R R X X X X X X X X X X O P X X X X X X X X X X X X
Service Default Mode (SDM) Purpose Set the TV in SDM mode in order to be able to: · Create a predefined setting for measurements to be made. · Override software protections. · Start the blinking LED procedure. · Read the error buffer. · Check the life timer. Specifications Table 5-2 SDM default settings Region Europe (except France), AP-PAL/-Multi France NAFTA, AP-NTSC LATAM · · Freq. (MHz) 475.25 Default syst. PAL B/G SECAM L 61.25 (channel 3) NTSC M PAL M
X X X
X X X
G_16860_030.eps 260107
Figure 5-3 SDM menu Menu explanation: · HHHHH: Are the operating hours (in decimal). · AAAABCD-X.YY: See paragraph "Service Modes" -> "General" -> "Software Identification, Version, and Cluster" for the SW name definition. · SDM: The character "SDM" to indicate that the TV set is in Service mode. · ERR: Shows all errors detected since the last time the buffer was erased. Five errors possible. · OP: Used to read-out the option bytes. See "Options" in the Alignments section for a detailed description. Seven codes are possible. How to Navigate As this mode is read only, there is not much to navigate. To switch to other modes, use one of the following methods: · Command MENU from the user remote will enter the normal user menu (brightness, contrast, colour, etc...) with "SDM" OSD remaining, and pressing MENU key again will return to the last status of SDM again. · To prevent the OSD from interfering with measurements in SDM, command "OSD" ("STATUS" for NAFTA and LATAM) from the user remote will toggle the OSD "on/off" with "SDM" OSD remaining always "on". · Press the following key sequence on the remote control transmitter: "062596" directly followed by the OSD/i+ 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 on the television set. If you switch the television set "off" by removing the mains (i.e., unplugging the television), the television set will remain in SDM when mains is re-applied, and the error buffer is not cleared. The error buffer will only be cleared when the "clear" command is used in the SAM menu. Note: · If the TV is switched "off" by a power interrupt while in SDM, the TV will show up in the last status of SDM menu as soon as the power is supplied again. The error buffer will not be cleared. · In case the set is in Factory mode by accident (with "F" displayed on screen), by pressing and hold "VOL-" and "CH-" together should leave Factory mode.
Set linear video and audio settings to 50 %, but volume to 25 %. Stored user settings are not affected. All service-unfriendly modes (if present) are disabled, since they interfere with diagnosing/repairing a set.. These service unfriendly modes are: (Sleep) timer. Blue mute/Wall paper. Auto switch "off" (when there is no "ident" signal). Hotel or hospital mode. Child lock or parental lock (manual or via V-chip). Skipping, blanking of "Not favourite", "Skipped" or "Locked" presets/channels. Automatic storing of Personal Preset or Last Status settings. Automatic user menu time-out (menu switches back/ OFF automatically. Auto Volume levelling (AVL).
How to Activate To activate 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 (see Figures "Service jumper"). Then press the mains button (remove the short after start-up). Caution: Activating SDM by shorting "Service" jumpers will override the DC speaker protection (error 1), the General I2C error (error 4), and the Trident video processor error (error 5). When doing this, the service-technician must know exactly what he is doing, as it could damage the television set.
SDM
G_16860_027.eps 260107
Figure 5-2 Service jumper (SSB component side)
Service Modes, Error Codes, and Fault Finding
5.2.3 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, and Audio). · NVM Editor. · ComPair Mode switching. · Set the screen mode to full screen (all contents on screen are viewable). How to Activate To activate 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 (it depends on region which button is present on the RC). 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.
S A M L L L L L E R R X X O P X X X C O T R N C S l p u G V o W e t n B M m a r i o n e r A l E d p a i E V E A A A A B C D - X . Y Y X X X X X X X X X X X X X X X X X X X X > > > > > > > Y e s
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uploading via ComPair. Read paragraph "Service Tools" > "ComPair". Caution: When this mode is selected without ComPair connected, the TV will be blocked. Remove the AC power to reset the TV. 12. SW Events. Only to be used by development to monitor SW behaviour during stress test. How to Navigate · In the SAM menu, 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. · When you press the MENU button twice while in top level SAM, the set will switch to the normal user menu (with the SAM mode still active in the background). To return to the SAM menu press the MENU button. · Command "OSD/i+" key from the user remote will toggle the OSD "on/off" with "SAM" OSD remaining always "on". · 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 (except the OPTIONS settings), 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. Note: · When the TV is switched "off" by a power interrupt while in SAM, the TV will show up in "normal operation mode" as soon as the power is supplied again. The error buffer will not be cleared. · In case the set is in Factory mode by accident (with "F" displayed on screen), by pressing and hold "VOL-" and "CH-" together should leave Factory mode. 5.2.4 Customer Service Mode (CSM) Purpose The Customer Service Mode shows error codes and information on the TV's operation settings. A call centre can instruct the customer (by telephone) to enter CSM in order to identify the status of the set. This helps them to diagnose problems and failures in the TV before making a service call. The CSM is a read-only mode; therefore, modifications are not possible in this mode. Specifications · Ignore "Service unfriendly modes". · Line number for every line (to make CSM language independent). · Set the screen mode to full screen (all contents on screen are viewable). · After leaving the Customer Service Mode, the original settings are restored. · Possibility to use "CH+" or "CH-" for channel surfing, or enter the specific channel number on the RC. How to Activate To activate 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).
X X X
s i g n i t o r r N T S
G_16860_031.eps 260107
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 Stand-by hours. 2. AAAABCD-X.YY. See paragraph "Service Modes" -> "General" -> "Software Identification, Version, and Cluster" for the SW name definition. 3. SAM. Indication of the Service Alignment Mode. 4. ERR (ERRor buffer). Shows all errors detected since the last time the buffer was erased. Five errors possible. 5. OP (Option Bytes). Used to read-out the option bytes. See "Options" in the Alignments section for a detailed description. Seven codes are possible. 6. 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. 7. Options. Used to set the option bits. See "Options" in the "Alignments" chapter for a detailed description. 8. Tuner. Used to align the tuner. See "Tuner" in the "Alignments" chapter for a detailed description. 9. RGB Align. Used to align the White Tone. See "White Tone" in the "Alignments" chapter for a detailed description. 10. NVM Editor. Can be used to change the NVM data in the television set. See also paragraph "Fault Finding and Repair Tips" further on. 11. ComPaIr. Can be used to switch the television to "In Application Programming" mode (IAP), for software
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Service Modes, Error Codes, and Fault Finding
3. ComPair speeds up the repair time since it can automatically communicate with the chassis (when the uP is working) and all repair information is directly available. 4. ComPair features TV software up possibilities. Specifications ComPair consists of a Windows based fault finding program and an interface box between PC and the (defective) product. The (new) ComPair II interface box is connected to the PC via an USB cable. For the TV chassis, the ComPair interface box and the TV communicate via a bi-directional cable via the service connector(s). The ComPair fault finding program is able to determine the problem of the defective television, by a combination of automatic diagnostics and an interactive question/answer procedure. How to Connect This is described in the chassis fault finding database in ComPair.
TO TV
TO I2C SERVICE CONNECTOR TO UART SERVICE CONNECTOR
Upon entering the Customer Service Mode, the following screen will appear:
CS M 1 2 3 4 5 6 7 8 9 1 1 1 1 1 M P S O C S N F L T S S H F O R W P O S V l I U Y O D O D E L : O D S / I D : : D E S : B : M : a s h D F E TI N E R : S T E M: U N D : A U : R M A T: 3 2 N: L C XX XX 3 1 XX a t ME WE P A MO Y E XX P F L 5 5 2 A G1 A 0 7 7 1 EL 1 X XXX XX XX 3 9 1 2 7 XXXXXX a : XX. X R: L L L L A K/ GOO L / NT S C NO/ S T E S / NO XXXXXX 2 1 1 X D 2 . X X 1 / 1 x X X 2 1 0 2 3 4 5 6 x XXX XXX XX 3 4 1
XXX
XXX
0 1 2 3 4
X L D / R
. XX. XX / S T R ONG S ECA M E O/ NI C A M
G_16860_032.eps 210207
Figure 5-5 CSM menu Menu Explanation 1. MODEL. Type number, e.g. 32PFL5522D/10. (*) 2. PROD S/N. Product serial no., e.g. AG1A0712123456. (*) 3. SW ID. Software cluster and version is displayed. 4. OP. Option code information. 5. CODES. Error buffer contents. 6. SSB. Indication of the SSB factory identification code (12nc). (*) 7. NVM. The NVM software version no. 8. Flash Data. PQ (picture quality) and AQ (audio quality) data version. This is a sub set of the main SW. 9. LIFE TIMER. Operating hours indication. 10. TUNER. Indicates the tuner signal condition: "Weak" when signal falls below threshold value, "Medium" when signal is at mid-range, and "Strong" when signal falls above threshold value. 11. SYSTEM. Gives information about the video system of the selected transmitter (PAL/SECAM/NTSC). 12. SOUND. Gives information about the audio system of the selected transmitter (MONO/STEREO/NICAM). 13. HDAU. HDMI audio stream detection. "YES" means audio stream detected. "NO" means no audio stream present. Only displayed when HDMI source is selected. 14. FORMAT. Gives information about the video format of the selected transmitter (480i/480p/720p/1080i). 15. HD SW ID. Software version of the 1080p full HD module (when present). 16. Reserved. 17. Reserved. 18. Reserved. (*) If an NVM IC is replaced or initialised, this data must be rewritten to the NVM. ComPair will foresee in a possibility to do this. 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.
OR
ComPair II RC in RC out
Multi function
Optional Power Link/ Mode Switch Activity
I 2C
RS232 /UART
PC
ComPair II Developed by Philips Brugge
HDMI I2C only
Optional power 5V DC
G_06532_036.eps 260107
Figure 5-6 ComPair II interface connection Caution: It is compulsory to connect the TV to the PC as shown in the picture above (with the ComPair interface in between), as the ComPair interface acts as a level shifter. If one connects the TV directly to the PC (via UART), ICs will be blown! How to Order ComPair II order codes: · ComPair II interface: 3122 785 91020. · ComPair32 CD (update): 3122 785 60160. · 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 5.3.2 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. Thus to determine if LVDS, RGB, and sync signals are okay. Furthermore it is possible to program EPLDs with this tool (Byte blaster). Read the user manual for an explanation of this feature. 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
5.3
5.3.1
Service Tools
ComPair Introduction ComPair (Computer Aided Repair) is a Service tool for Philips Consumer Electronics products. and offers the following: 1. ComPair helps you to quickly get an understanding on how to repair the chassis in a short and effective way. 2. ComPair allows very detailed diagnostics and is therefore capable of accurately indicating problem areas. You do not have to know anything about I2C or UART commands yourself, because ComPair takes care of this.
Service Modes, Error Codes, and Fault Finding
LVDS signals (> 1280x960). Below this resolution, or when a DVI monitor is used, the displayed picture will be full size. How to Connect Connections are explained in the user manual, which is packed with the tool. The LVDS cables included in the package cover most chassis. For some chassis, a separate cable must be ordered. 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, covering chassis BJx.x, EJx.x, FJx.x and LC4.1): 3122 785 90671. · LVDS tool Service Manual: 3122 785 00810. · LVDS cable 20p/DF -> 20p/DF (standard with tool): 3122 785 90731. · LVDS cable 31p/FI -> 31p/FI (standard with tool): 3122 785 90662. For other chassis, a separare LVDS cable must be ordered. Refer to table "LVDS cable order number" for an overview of all deliverable cables. Table 5-3 LVDS cable order number
Chassis BJ2.4 BJ2.5 BJ3.0 BJ3.1 EJ2.0 EJ3.0 EL1.1 FJ3.0 FTL2.4 LC4.1 LC4.3 LC4.31 LC4.41 LC4.8 LC4.9 LC7.2 JL2.1 LVDS cable order number 3122 785 906621 3122 785 906621 3122 785 906621 3122 785 906621 3122 785 906621 3122 785 906621 3122 785 906621 / 3122 785 90821 3122 785 906621 3122 785 906621,2 3122 785 907311 / 3122 785 90851 3122 785 90821 3122 785 90821 3122 785 906621,2 / 3122 785 90851 only for 26 & 32" sets 3122 785 906621.2 / 3122 785 90851 3122 785 906621,2 / 3122 785 90851 MFD variant only tbd 3122 785 90861 Remarks
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5.4
5.4.1
Error Codes
Introduction Error codes are required to indicate failures in the TV set. In principle a unique error code is available for every: · Activated protection. · Failing I2C device. · General I2C error. · SDRAM failure. The last five errors, stored in the NVM, are shown in the Service menu's. This is called the error buffer. 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. An error will be added to the buffer if this error differs from any error in the buffer. The last found error is displayed on the left. An error with a designated error code may never lead to a deadlock situation. This means that it must always be diagnosable (e.g. error buffer via OSD or blinking LED procedure, ComPair to read from the NVM). In case a failure identified by an error code automatically results in other error codes (cause and effect), only the error code of the MAIN failure is displayed. Example: In case of a failure of the I2C bus (CAUSE), the error code for a "General I2C failure" and "Protection errors" is displayed. The error codes for the single devices (EFFECT) is not displayed. All error codes are stored in the same error buffer (TV's NVM) except when the NVM itself is defective.
5.4.2
How to Read the Error Buffer You can read the error buffer in 3 ways: · On screen via the SAM/SDM/CSM (if you have a picture). Example: 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.
5.4.3
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).
Notes 1. Included in LVDS tool package (order code 3122 785 90671) 2. Pins 27 and 28 should be grounded or not connected.
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Service Modes, Error Codes, and Fault Finding
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.
Table 5-4 Error code overview Error code1) Description 0 1 2 3 4 5 No error. DC Protection of speakers. +12V protection error. Reserved. General I2C error. Trident Video Processor communication error. 7202 note 2 When Trident IC is defective, error 10 and 14 might also be reported. Trident communicates via parallel bus, not via the I2C bus. The I2C bus of Trident is only used in ComPair mode. The TV will not startup due to critical dta not available from the NVM, but the LED will blink the error code. 12V missing or "low". · Item nr.
Remarks
Note: If you exit SAM by disconnecting the mains from the television set, the error buffer is not reset.
6
I2C error while communicating with the NVM.
7315
7
I2C error while communicating with the Tuner. I2C error while communicating with the IF Demodulator.
1101
8
7113
9
7411 I2C error communicating with the Sound Processor. SDRAM defective. I2C error while communicating with the HDMI IC. I2C error while communicating with the MOJO PNX8314. DVB HW communication error. SDRAM defective. Reserved. Reserved. Reserved. I2C error while communicating with the iBoard processor. I2C error while communication with 1080p bolt-on module. if applicable 7204 7817
10 11
12
7G00 if applicable
13
7F01, if applicable 7K00, 7G00 7205
14 15 16 17 18
19
if applicable
Notes 1. Some of the error codes reported are depending on the option code configurations. 2. This error means: no I2C device is responding to the particular I2C bus. Possible causes: SCL/SDA shorted to GND, SCL shorted to SDA, or SCL/SDA open (at uP pin). The internal bus of the Trident platform should not cause the entire system to halt as such an error can be reported. 5.4.4 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:
Service Modes, Error Codes, and Fault Finding 5.5
5.5.1
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The Blinking LED Procedure
Introduction
Table 5-5 NVM editor overview Hex .ADR 0x000A 0x0000 Store? .VAL .Store 5.7.2 Dec 10 0 Description Existing value New value
The software is capable of identifying different kinds of errors. Because it is possible that more than one error can occur over time, an error buffer is available, which is capable of storing the last five errors that occurred. This is useful if the OSD is not working properly. Errors can also be displayed by the blinking LED procedure. The method is to repeatedly let the front LED pulse with as many pulses as the error code number, followed by a period of 1.5 seconds in which the LED is "off". Then this sequence is repeated. Example (1): error code 4 will result in four times the sequence LED "on" for 0.25 seconds / LED "off" for 0.25 seconds. After this sequence, the LED will be "off" for 1.5 seconds. Any RC5 command terminates the sequence. Error code LED blinking is in red colour. Example (2): the content of the error buffer is "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. 5.5.2 Displaying the Entire Error Buffer Additionally, the entire error buffer is displayed when Service Mode "SDM" is entered. In case the TV set is in protection or Stand-by: The blinking LED procedure sequence (as in SDMmode in normal operation) must be triggered by the following RC sequence: "MUTE" "062500" "OK". In order to avoid confusion with RC5 signal reception blinking, this blinking procedure is terminated when a RC5 command is received. To erase the error buffer, the RC command "MUTE" "062599 "OK" can be used.
Load Default NVM Values It is possible to download default values automatically into the NVM in case a blank NVM is placed or when the NVM first 20 address contents are "FF". After the default values are downloaded, it is possible to start-up and to start aligning the TV set. To initiate a forced default download the following action has to be performed: 1. Switch "off" the TV set with the mains cord disconnected from the wall outlet (it does not matter if this is from "Standby" or "Off" situation). 2. Short-circuit the SDM jumpers on the SSB (keep short circuited). 3. Press "P+" or "CH+" on the local keyboard (and keep it pressed). 4. Reconnect the mains supply to the wall outlet. 5. Release the "P+" or "CH+" when the set is "on" or blue LED is blinking. When the downloading has completed successfully, the set should be into Standby, i.e. red LED on. Alternative method (1): 1. Go to SAM. 2. Select NVM Editor. 3. Select ADR (address) to 1 (dec). 4. Change the VAL (value) to 170 (dec). 5. Store the value. 6. Do a hard reset to make sure new default values took place. Alternative method (2): It is also possible to upload the default values to the NVM with ComPair in case the SW is changed, the NVM is replaced with a new (empty) one, or when the NVM content is corrupted. After replacing an EEPROM (or with a defective/no EEPROM), default settings should be used to enable the set to start-up and allow the Service Default Mode and Service Alignment Mode to be accessed.
5.6
TV Main Software Upgrade
For instructions on how to upgrade the TV Main software, refer to ComPair. 5.7.3
Start-up/Shut-down Flowcharts Important note for DVB sets: · When you put a DVB set into Stand-by mode with an RC, the set will go to "Semi Stand-by" mode for 5 minutes. This, to facilitate "Off the Air download" (OAD). If there is no activity within these 5 minutes, the set will switch to Standby mode. In "Semi Stand-by" mode, the LCD backlight and Audio Amplifier are turned "off" but other circuits still work as normal. The customer might think the set is in Stand-by. However, in real Stand-by mode, only the uP and the NVM are alive and all other circuits are switched "off". · If you press the mains switch at the local key board in a DVB set, the set will switch to Stand-by mode. On the next pages you will find start-up and shut-down flowcharts, which might be helpful during fault finding. It should be noted, that some events are only related to PDP sets, and therefore not applicable to this LCD chassis.
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 convenient 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! · Always write 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.
EN 24
5.
LC7.1E LA
Service Modes, Error Codes, and Fault Finding
AC ON
Start Up
+5VSTBY & +3V3STBY Available (1) (1) +5VSTBY to be measured at PDTC114ET (item 7322)
160ms
RENEAS POR by +3VSTBY (2) STANDBYn = LOW
(2) to be measured at pin 4 of BD45275G (item 7312)
Error 6 - NVM [Protection]
InitCold Component: 1. Check SDM port. - If SDM pin = LOW and NVM first 20Byte = 0xFF, reload Software default NVM value. 2. Check Panel port. - If Panel Pin = LOW and check slave address 0x65 = 0xA5, Enter Panel Mode.
No
Last status is ON?
User wake up the sets in DVB recording mode
Yes Read NVM completed. STOP I²C activities. LCD_PWR_ON = HIGH (Same function as CTRL-DISP2) SDI PDP => CTRL_DISP1 = LOW
Standby Normal Mode (RED LED)
LED = BLUE for Normal mode LED = RED for Recording mode 20ms Wait for 20 ms
Port Assignment in STANDBY
BLOCK RC Key Switch ON LVDS Signal
Wait for RC key or Wake up event
M16C RST_H = HIGH RST_HDMI = LOW RST_AUD = LOW RESET_n = LOW LCD_PWR_ON = LOW SDI PDP => CTRL_DISP1 = LOW
1000ms to 1500ms
Init. Warm Component (For software)
STANDBYn = HIGH (Same function as CTRL-DISP3)
For LCD: BL_ON_OFF = HIGH * BL_ADJ keep 100% for 3000ms before dimming.
For PDP: 3000ms delay
500ms
Wait for 500ms
Blank Picture Picture Mode Setup & Detection Error 2 [Protection] Wait for 100ms Time out = 2000ms No Is Power Down = HIGH? unBlank Picture & UnMute Audio
Yes 100ms Wait for 100ms
Notes: --------1. LC07 TV software only start communication with IBOZ once receive the INT message from IBOZ.
End
M16C RST_H to LOW RST_HDMI = HIGH RST_AUD = HIGH RESET_n = HIGH No Enable Power Down INT Enable DC_PROT INT
Error 7
Initialise Tuner
Error 8
Initialise IF Demodulator, Afric TDA9886T
For DVB Sets only (Semistandby) Recording mode SDI PDP => CTRL_DISP1 = HIGH
Error 9
Initialise Micronas Mute Audio
Error 11 Recording Mode finished
Initialise HDMI, Sil9023 Error 5 - Trident [Protection] Initialise Trident CX BL_ADJ = HIGH (100% Duty Cycle) DPTVInit( ) Error 10 SDRAM 7204 [Protection] Error 14 SDRAM 7205 [Protection]
Software Shutdown:
1700ms
WP for NVM Yes
Error 3 [Protection]
Initialise FHP Panel * For FHP PDP Sets only Error 17 AmbiLight Initialise Bolt-ON * For iTV, 1080P, Ambi Light Error 18 iTV iFace
Port Assignment in STANDBY
Enable RC Key STANDBYn = LOW
Error 19 1080P
Standby Normal Mode
DVB recording mode
G_16860_070.eps 220207
Figure 5-7 Start-up flowchart
Service Modes, Error Codes, and Fault Finding
LC7.1E LA
5.
EN 25
SEMISTANDBY/ STANDBY
Start
Mute Audio
BL_ADJ stop dimming (PWM duty cycle 100%)
BL_ON_OFF = LOW
300ms
Wait 300ms
Switch OFF LVDS
20ms
Wait 20ms
LCD_PWR_ON = LOW
Software Shutdown:
LED = RED For DVB Sets only (Semistandby) Wait for 3000ms Except power tact switch
No
Standby using "power key"
Yes LED = NO LED for Standby soft mode
SDI PDP => CTRL_DISP1 = HIGH Disable Power Down INT & DC_PROT_INT Off Air Downloading/ Recording Mode BL_ADJ = LOW (PWM duty cycle 0%) IBOZ send shut down command WriteProtect for NVM
Port Assignment in STANDBY
Sets go to standby here
40ms Total = 360ms
STANDBYn = LOW
Blocking for the next start up to ensure power supply discard properly.
Wait for 3000ms
End
G_16860_071.eps 220207
Figure 5-8 Semi Stand-by/Stand-by flowchart
EN 26
5.
LC7.1E LA
Service Modes, Error Codes, and Fault Finding
Power Down INT: AC OFF or Transient INT
Start
Avoid false trigger No Poll the Power Down INT for 5 times Yes End Mute Audio & VIdeo
Notes: 1. Power Down INT will be based on fall edge triggering 2. +3V3STBY will stay for 15ms, software must perform WriteProtect for NVM within 15ms.
WriteProtect for NVM
STANDBYn = LOW
Wait 5000 ms
Re-start: Start up
End
DC_PROT INT
Start
Avoid false trigger No is DC_PROT = LOW for 3 sec?
Yes End Mute Audio & VIdeo
Error 1 [Protection]
Log Error Code
WriteProtect for NVM
STANDBYn = LOW
End
G_16860_072.eps 220207
Figure 5-9 Power Down & DC_PROT flowchart
Block Diagrams, Test Point Overview, and Waveforms
LC7.1E LA
6.
27
6. Block Diagrams, Test Point Overview, and Waveforms
Wiring Diagram 32"
WIRING 32" LCD (STYLING ME7)
LCD DISPLAY
(1004)
LVDS 30P
CN6 9P
8G51 8C01
8521
14P CN2
CN7 8P
8P11
12P CN3
SUPPLY
(1005) 8735 9P 1C01 8520 8P 1P11 30P 1G51 7P 1M20 11P 1304 4P 1735
12P CN3
8735
CN2 14P
B SSB
INVERTER
INVERTER
D
8002
SIDE I/O
(1116)
INLET
8191 8192(UK)
8M20 RIGHT SPEAKER LEFT SPEAKER
7P 1M20
3P 1M01
J
IR/LED/LIGHT SENSOR (1112)
G_16860_034.eps 200207
8M01
8304
11P 1304
3P 1M01
E KEYBOARD CONTROL (1114)
CN1 2P3
Block Diagrams, Test Point Overview, and Waveforms
LC7.1E LA
6.
28
Wiring Diagram 37"-42"
WIRING 37"- 42" LCD (STYLING ME7)
LCD DISPLAY
(1004)
LVDS 30P 8520 8521 8C01 8P11 8G51
9P X412
8P X406
14P X404
12P X403
SUPPLY
(1005)
CN2 14P
8735
12P CN3
INVERTER
9P 1C01
8P 1P11
30P 1G51
7P 1M20
11P 1304
4P 1735
INVERTER
B SSB
D
8002
SIDE I/O
(1116)
INLET 8304
11P 1304
8191 8192(UK)
8M20 LEFT SPEAKER
RIGHT SPEAKER
7P 1M20
3P 1M01
J
IR/LED/LIGHT SENSOR (1112)
H_16940_012.eps 050307
8M01
3P 1M01
E KEYBOARD CONTROL (1114)
CN1 2P3
Block Diagrams, Test Point Overview, and Waveforms
LC7.1E LA
6.
29
Block Diagram Supply
SUPPLY 32" LCD
DISPLAY SUPPLY 1. +24V 2. +24V 3. +24V 4. +24V 5. +24V 6. GND 7. GND 8. GND 9. GND 10. GND 11. N.C. 12. N.C. DISPLAY SUPPLY 1. +24V 2. +24V 3. +24V 4. +24V 5. +24V 6. GND 7. GND 8. GND 9. GND 10. GND 11. DIM 12. BL-ON 13. PWM 14. N.C.
CN3
CN2
CN1
CN6
CN7
AC-IN 220 - 240V 50/60Hz
CONTROL: 1. BL-DIM 2. PG 3. BL-ON 4. GND 5. N.C. 6. PSON 7. N.C. 8. 12V. CONTROL: 1. -12VA 2. +12VA 3. GND 4. 5.2VS 5. 5.2VS 6. 5.2VS 7. GND 8. GND. 9. GND
PRIMARY SIDE
SECONDARY SIDE
G_16860_035.eps 200207
Block Diagrams, Test Point Overview, and Waveforms
LC7.1E LA
6.
30
Block Diagram Video
VIDEO
B03A TUNER IF & DEMODULATOR
+VTUN 1101 TD1318S/A 9 1102 MAIN TUNER IF_OUT3 11 4120 IF_ATV 1 4 1 1 4 3111 RF_AGC SIF2 24 SIF2 SIF AGC 14 TAGC TUNER AGC VIF AGC 1103 VIF2 2 VIF2 5 VIF1 1 VIF1 SUPPLY VIF-PLL SOUND TRAPS 4.5 to 6.5 Mhz CVBS 17 7113 TDA9886T/V4 +5VS
B04B VIDEO PROCESSOR
7202 SVP CX32-LF
DEMODULATOR
7114 EF CVBS_RF 169 CVBS1
5
SIF1
23 SIF1
SINGLE REFERENCE QSS MIXER INTERCARRIER MIXER AND AM-DEMODULATOR MAD I2C-BUS TRANSCEIVER
SDA SCL
15 1104 4M0 ANALOG MUX
B06B IO - SCART 1 & 2
1504 19 15 11 7 1 20 16 8 EXT1 1506 19 21 2x SCART 20 15 8 3552 3550 SC2_STATUS 3522 7500 EF 3521 SC2_CVBS_MON_OUT 162 CVBS_OUT2 3528 3518 SC1_STATUS B04A XTALI 205 1201 14M31 3516 3545 3528 3523 3535 7503 EF 3537 SC1_RF_OUT_CVBS SC1_R_IN SC1_G_IN SC1_B_IN SC1_CVBS_IN SC1_FBL_IN 163 189
CVBS_OUT1
PR_R2 181 Y_G2 197 PB_B2 198 173 PB_B3 FB1
VIDEO PROCESSOR
XTALO
204
3529
SC2_Y_CVBS_IN SC2_C_IN
190 70
PR_R3 FS2
B04A
EXT2
B06A YPBPR & REAR IO
1615 3617 Pr 3618 Y 3619 Pb HD_Y_IN HD_Pb_IN HD_Pr_IN 188 180 196 PR_R1 Y_G1 PB_B3 (0-11) 7204 IS42S16400D-6TL
D
SIDE FACING SIDE AV
1302 FRONT_Y_CVBS_IN FRONT_C_IN 1304 2 4
B04A MICROPROCESSOR
1304 2 4 DQ(0-31) FRONT_Y_CVBS_IN_T FRONT_C_IN_T 182 192 Y_G3 C CX_MA (0-11) MEMORY (0-15)
DRAM 1Mx16x4
VIDEO
7205 IS42S16400D-6TL
1301 1 S VIDEO 5 2
3 (16-31)
DRAM 1Mx16x4
4
B06C HDMI
1810 1 3 4 6 7 9 10
19 18
1G51 7817 SII9025CTU RX2+A RX2-A RX1+A RX1-A RX0+A RX0-A RXC+A RXC-A 7814 HDMI_HOTPLUG_RESET 1811 1 3 4 6 7 9 10 RX2+B RX2-B RX1+B RX1-B RX0+B RX0-B RXC+B RXC-B 7860 HDMI_HOTPLUG_RESET B04A H_16940_001.eps 270207 71 + 70 - R1X2 67 + 66 - R1X1 63 + 62 - R1X0 59 + 58 - R1XC HDMI_Y(0-7) DIN_PORTD (24BIT) B04A HDMI_Cb(0-7) 43 TCLK1 42 41 TD1 40 TXCLKn TXCLKp TXDn TXDp 1214 1213 TXCLKn1 TXCLKp1 TXDn1 TXDp1 18 20 24 26 52 + 51 - R0X2 ADC 48 + ODCK 47 - R0X1 HDMI 44 + (MAIN) DE 43 - R0X0 HSYNC 40 + VSYNC 39 - R0XC VDISP 1 3 5 7 121 1 2 3 HDMI_VCLK HDMI_DE HDMI_H HDMI_V 51 23 DP-CLK 6 DP_DE_FLD TA1 50 49 TB1 48 8-BIT 45 SINGLE TC1 44 LVDS TX TXAn TXAp TXBn TXBp TXCn TXCp 1212 1211 1210 TXAn1 TXAp1 TXBn1 TXBp1 TXCn1 TXCp1 2 4 6 8 12 14
1 2
12 19
4 DP_HS 5 DP_HS
LVDS CONNECTOR TO DISPLAY
1 2
HDMI_Cr(0-7)
19 18
12 19
BOLT_ON_SCL BOLT_ON_SDA
27 29
2x HDMI CONNECTOR
Block Diagrams, Test Point Overview, and Waveforms
LC7.1E LA
6.
31
Block Diagram Audio
AUDIO
B03A TUNER IF & DEMODULATOR
+VTUN 1101 TD1318S/A 9 1102 MAIN TUNER
IF_OUT3
B04C AUDIO PROCESSOR
7113 TDA9886T/V4 +5VS 7411 MSP4450P-VK-E8 000 Y
B07 A