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Colour Television
Chassis
LC4.2E
AA
E_14490_000.eps 110604
Contents
Page
Contents
Pixel Plus Panel: EPLD Control Pixel Plus Panel: LVDS In Pixel Plus Panel: EPLD I/O Pixel Plus Panel: Power Supply Alignments Circuit Descriptions Abbreviation List IC Data Sheets Spare Parts List Revision List
Page
(Diagram PP1) 57 (Diagram PP2) 58 (Diagram PP3) 59 (Diagram PP4) 60 63 66 72 74 77 82 61 61 61 61
1. Technical Specifications, Connections, and Chassis Overview 2 2. Safety and Maintenance Instructions, Warnings, and Notes 5 3. Directions for Use 7 4. Mechanical Instructions 8 5. Service Modes, Error Codes, and Faultfinding 11 6. Block Diagrams, Testpoint Overviews, and Waveforms Wiring Diagram 19 Block Diagram Tuner and IF Video 20 Block Diagram Scaler 21 Testpoint Overview Tv & Scaler Board 22-23 I2C Overview 24 Supply Voltage Overview 25 7. Circuit Diagrams and PWB Layouts Diagram Tuner + VIF (Diagram A1) 26 Hercules (Diagram A2) 27 Histogram (Diagram A3) 28 Audio Amplifier (Diagram A5) 29 TV-Supply (Diagram A6) 30 Scaler (Diagram A7) 31 Scaler Interface (Diagram A9) 32 SDRAM (Diagram A10) 33 Flash / Control (Diagram A11) 34 HDMI (Diagram A12) 35 PCHD-MUX (Diagram A13) 36 Supply (Diagram A14) 37 Side IO and LKB Panel (Diagram D) 48 Rear IO Panel: Scart (17") (Diagram H1) 50 Rear IO Panel: PCHD-IO (17") (Diagram H2) 51 Rear IO Panel: Scart (23/26") (Diagram H1) 53 Rear IO Panel: PCHD-IO (23/26")(Diagram H2) 54 Front IR / LED Panel (Diagram J) 56
8. 9.
10 11
PWB 38-47 38-47 38-47 38-47 38-47 38-47 38-47 38-47 38-47 38-47 38-47 38-47 49 52 52 55 55 56
© Copyright 2004 Philips Consumer Electronics B.V. Eindhoven, The Netherlands. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise without the prior permission of Philips.
Published by BB 0466 Service PaCE
Printed in the Netherlands
Subject to modification
EN 3122 785 14491
EN 2
1.
LC4.2E AA
Technical Specifications, Connections, and Chassis Overview
1. Technical Specifications, Connections, and Chassis Overview
Index of this chapter: 1. Technical Specifications 2. Connections 3. Chassis Overview Note: Figures below can deviate slightly from the actual situation, due to the different set executions. - Standby : <3W
1.2
1.2.1
Connections
Rear Connections
AERIAL IN
FM ANT
SCART 1
SCART 2 AUDIO OUT VGA
DVI-D
PC AUDIO IN
1.1
1.1.1
Technical Specifications
Vision Display type Screen size : : : : : : : : : : : : : : : : : : : : : : : : : : LCD, S-IPS 16:9 17 inch (44 cm) 23 inch (59 cm) 26 inch (66 cm) 1280(*3)x768 pixels WXGA 400:1 450 cd/m^2 176x176 deg. PLL PAL B/G, D/K, I SECAM B/G, D/K, L, L1 NTSC 4.43 NTSC 3.58 NTSC Play Back PAL 60 PAL B/G Play Back SECAM Play Back 100 presets UVSH 75 ohm, IEC-type 75 ohm, FM 17 inch: 578x375x240 23 inch: 690x433x240 26 inch: 788x504x270
E_14490_011.eps 130404
Figure 1-1 Rear connections Aerial - In - IEC-type FM Ant - IEC-type
Coax, 75 ohm
D
Resolution (HxV) Contrast ratio Light output Viewing angle (HxV) Tuning system Colour systems
Coax, 75 ohm
D
External 1: RGB/YUV - In and CVBS - In/Out
20 2
Video playback
21
E_06532_001.eps 050404
1
Figure 1-2 SCART connector 1 2 3 4 5 6 7 8 - Audio - R 0.5 V_rms / 1 kohm - Audio - R 0.5 V_rms / 10 kohm - Audio - L 0.5 V_rms / 1 kohm - Audio - gnd Ground - Blue - gnd Ground - Audio - L 0.5 V_rms / 10 kohm - Blue/U - in 0.7 V_pp / 75 ohm - CVBS - status 0 - 2 V: INT 4.5 - 7 V: EXT 16:9 9.5 - 12 V: EXT 4:3 - Green - gnd Ground - n.c. - Green/Y - in 0.7 V_pp / 75 ohm - n.c. - Red - gnd Ground - FBL - gnd Ground - Red/V - in 0.7 V_pp / 75 ohm - Status/FBL 0 - 0.4 V: INT 1 - 3 V: EXT / 75 ohm - Video Ground - Video Ground - CVBS - out 1 V_pp / 75 ohm - CVBS - in 1 V_pp / 75 ohm - Shielding Ground k j k H H j j
Channel selections Aerial input Antenna Dimensions (WxHxD) in mm
1.1.2
Sound Sound systems : FM/FM (5.5-5.74) : BI NICAM BG - 2CS BG : NICAM B/G (5.5-5.85) : NICAM D/K (6.5-5.85) (Hung) : NICAM I (6.0-6.52) : NICAM L (6.5(AM)5.85) : 17 inch: 2 x 3 W_rms : 23 inch: 2 x 5 W_rms : 26 inch: 2 x 5 W_rms
9 10 11 12 13 14 15 16 17 18 19 20 21
H j H H j j H H k j H
Maximum power
1.1.3
Miscellaneous Power supply: Mains voltage Mains frequency Ambient conditions: - Temperature range - Maximum humidity Power consumption - Normal operation
: 95 - 240 V_ac : 50 / 60 Hz
: +5 to +40 deg. C : 90 % R.H.
: 17 inch: 55 W : 23 inch: 96 W : 26 inch: 110 W
Technical Specifications, Connections, and Chassis Overview
External 2: RGB/YUV - In and CVBS - In/Out
20 2
LC4.2E AA
1.
EN 3
k jk j j H
21
E_06532_001.eps 050404
1
Figure 1-3 SCART connector 1 2 3 4 5 6 7 8 - Audio - R 0.5 V_rms / 1 kohm - Audio - R 0.5 V_rms / 10 kohm - Audio - L 0.5 V_rms / 1 kohm - Audio - gnd Ground - Blue - gnd Ground - Audio - L 0.5 V_rms / 10 kohm - n.c. - CVBS - status 0 - 2 V: INT 4.5 - 7 V: EXT 16:9 9.5 - 12 V: EXT 4:3 - Green - gnd Ground - n.c. - n.c. - n.c. - Red - gnd Ground - FBL - gnd Ground - C - in 0.3 V_pp / 75 ohm - n.c. - Video Ground - Video Ground - CVBS - out 1 V_pp / 75 ohm - CVBS/Y - in 1 V_pp / 75 ohm - Shielding Ground k j k H H j j
9 10 11 12 13 14 15 16 17 18 19 20 21
H j H H j j H H k j H
6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 C5
- SCL_DVI - SDA_DVI n.c. - RX1- RX1+ - Ground GND n.c. n.c. - +5V - Ground GND - + 5V Hot Plug - RX0- RX0+ - Ground GND n.c. n.c. - Ground GND - RXC+ - RXC- Ground GND
H j j H H j j H
PC Audio - in 3 - Audio - R 2 - Audio - L 1.2.2
0.5 V_rms / 1 kohm 0.5 V_rms / 1 kohm
kq kq
Side connections
HEADPHONE AUDIO IN S-VIDEO E_14490_012.eps 130404
Audio - out 3 - Audio - R 2 - Audio - L VGA
0.5 V_rms / 1 kohm 0.5 V_rms / 1 kohm
kj kj
Figure 1-6 Side connections
1 6 11 5 10 15 E_06532_002.eps 050404
Figure 1-4 VGA Connector
Hosiden: SVHS - In 1 -Y Ground 2 -C Ground 3 -Y 1 Vpp / 75 ohm 4 -C 0.3 Vpp / 75 ohm Mini Jack: Audio - in 2 - Audio - L 0.5 Vrms / 10 kohm 3 - Audio - R 0.5 Vrms / 10 kohm Mini Jack: Headphone - Out - Headphone 32 - 600 ohm / 10 mW
H H j j
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
- Red - Green - Blue - 5V_DC - DDC_SDA - H-sync - V-sync - DDC_SCL
0.7 V_pp / 75 ohm 0.7 V_pp / 75 ohm 0.7 V_pp / 75 ohm Ground Ground Ground Ground Ground +5 V_dc Ground Ground 0-5V 0-5V
j j j H H H H H j H H jk j j j
jq jq
ot
DVI (for 23 and 26 inch models)
1 9 17 8 16 24 C5 E_06532_003.eps 050404
Figure 1-5 DVI connector 1 2 3 4 5 - RX2- RX2+ - Ground j j H
GND n.c. n.c.
EN 4
1.
LC4.2E AA
Technical Specifications, Connections, and Chassis Overview
LCD PANEL
TV & SCALER BOARD
A
PIXEL PLUS PANEL
SIDE IO PANEL
PP
D J
FRONT LED PANEL POWER SUPPLY UNIT
P
REAR I/O CINCH PANEL
H
E_14490_100.eps 040804
Figure 1-7 Chassis Overview
Safety Instructions, Warnings, and Notes
LC4.2E AA
2.
EN 5
2. Safety Instructions, Warnings, and Notes
2.1 Safety Instructions
Safety regulations require that during a repair: · Connect the set to the Mains 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 lead for external damage. · Check the strain relief of the Mains cord for proper function. · Check the electrical DC resistance between the Mains plug and the secondary side (only for sets which have a Mains isolated power supply): 1. Unplug the Mains cord and connect a wire between the two pins of the Mains plug. 2. Set the Mains switch to the "on" position (keep the Mains cord unplugged!). 3. Measure the resistance value between the pins of the Mains plug and the metal shielding of the tuner or the aerial connection 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 plug. · Check the cabinet for defects, to avoid touching of any inner parts by the customer. · voltages in the power supply section both in normal operation (G) and in standby (F). These values are indicated by means of the appropriate symbols. The 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. Manufactured under license from Dolby Laboratories. "Dolby", "Pro Logic" and the "double-D symbol", are trademarks of Dolby Laboratories.
·
E_06532_006.eps 240604
Figure 2-1 Dolby PL Symbol 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 Electrical Replacement 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, it is essential when removing an (LF)BGA, 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 chance 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. 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 shown to result in problems during re-soldering.
· · ·
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
·
EN 6
2.
LC4.2E AA
Safety Instructions, Warnings, and Notes
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. To reflow the solder, apply a temperature profile according to the IC data sheet. 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: http://www.atyourservice.ce.philips.com (needs subscription). After login, select "Magazine", then go to "Workshop Information". Here you will find Information on how to deal with BGA-ICs. 2.3.4 Lead Free Solder Some PWBs in this chassis are "lead-free prepared". This is indicated on the PWB by the PHILIPS lead-free logo (either by a service-printing or by a sticker). It does not mean that leadfree solder is actually used!
P
2.3.5
b
Figure 2-2 Lead-free logo 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 - 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.
·
Directions for Use
LC4.2E AA
3.
EN 7
3. Directions for Use
You can download this information from the following website: http://www.philips.com/support
EN 8
4.
LC4.2E AA
Mechanical Instructions
4. Mechanical Instructions
Index of this chapter: 1. Service Position 2. Rear Cover Removal 3. Power Supply Unit Removal 4. TV & Scaler Board Removal 5. I/O Panel Removal 6. Side I/O & Keyboard Panel and Front LED Panel Removal 7. Pixel Plus Panel Removal 8. Exchanging the LCD Panel 9. Re-assembly Note: Figures below can deviate from the actual situation, due to different set executions. Note: To diagnose the set with ComPair it is not needed to open the set entirely. 1. Manually unlock and remove the cover cap (1). See figure "TV set rear view". 2. Break away the protective plate (2) at the I/O panel bracket to get access to the needed plugs. See figure "Protective plate". Figure 4-3 TV stand removal 1. Carefully pull upwards the cover plate (2) (from it's left side) to unlock it (3) and remove the plate from the stand. 2. Unplug the AC power and the antenna cables. 3. Be sure to remove the coin slotted mounting screw (4) from the stand. 4. Carefully lift the TV from the swivel base (it uses a vertical sliding mechanism). 5. Place the TV upside down on a tabletop (use a protection sheet or foam bars). Take care, that this is flat and free from obstacles like screws, to prevent damaging the fragile LCD screen. 4.1.1 Figure 4-1 Protective plate Foam Bars
4
E_14490_003.eps 130404
2
E_14490_001.eps 130404
4.1
Service Position
5
1
E_06532_018.eps 170504
Figure 4-4 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 placing a mirror under the TV, you can easily monitor the screen.
2
3
E_14490_002.eps 130404
Figure 4-2 TV set rear view
Mechanical Instructions 4.2 Rear Cover Removal 4.4
LC4.2E AA
4.
EN 9
TV & Scaler Board Removal
3 3
3
3
1
1
3 2 3 3 1 3
E_14490_004.eps 130404
E_14490_006.eps 130404
2
Figure 4-5 Rear cover removal 1. Manually unlock and remove the top cover cap (5). See Figure: "TV set rear view". 2. Make sure all power-, audio-, video- and coax- cables are unplugged. 3. Remove all Torx screws (1) around the edges of the rear cover. 4. Remove the four silver coloured Torx screws (2) around the stand holder. See figure "Rear cover removal". 5. Carefully use a flat screwdriver to release the clamps (3). See figure "Rear cover removal". 6. Remove the rear cover and store it in a safe place. Note: avoid holding the button-area during removal (it can be easily damaged).
Figure 4-7 : TV & Scaler board shield removal
2 3
4.3
Power Supply Unit Removal
E_14490_007.eps 130404
Figure 4-8 : TV & Scaler board removal 1. Disconnect all cables from the TV & Scaler board. 2. Remove all shield mounting screws (1) and remove the shield. 3. Remove the screw from the grounding cable (2). 4. Remove the mounting screw (3) and remove the board.
1
4.5
I/O Panel Removal
3
E_14520_005.eps 100204
1
Figure 4-6 Power supply unit 1. Disconnect all cables from the Power supply unit. 2. Remove all mounting screws (1) from the Power supply unit. 3. Take out the Power supply unit.
2
E_14490_008.eps 130404
Figure 4-9 I/O panel removal
EN 10
4.
LC4.2E AA
Mechanical Instructions 4.8 Exchanging the LCD Panel
1. Release the two clamps (1) at the I/O panel bracket. Carefully pull the bracket in the direction (2), as shown at the figure "I/O panel removal", and remove it. 2. Disconnect all cables from the I/O panel. 3. Remove all mounting screws from the I/O panel (3). 4. Take out the I/O panel.
4.6
Side I/O & Keyboard Panel and Front LED Panel Removal
1 1
1
4 2
3 1
E_14490_010.eps 130404
Figure 4-12 Exchanging the LCD panel 1. 2. 3. 4.
E_14490_009.eps 130404
Disconnect all cables from the LCD Panel. Remove all mounting screws (1) from the metal cover. Lift and take off the metal cover. Now you can exchange the LCD panel.
4.9
Re-Assembly
To re-assemble the whole set, do all processes in reverse order. Notes: · Do not forget to replace the ground cable of the TV & Scaler board, while mounting the screw at the board topside. See figure "TV & Scaler board removal". · Make sure the ferrite ring (1) is properly tightened to the clip (this is valid only for 26 inch sets).
Figure 4-10 Side I/O & Keyboard panel and Front LED panel removal 1. Release the clamp (1) and take out the Front LED panel. 2. Disconnect the cable (2) from the Side I/O & Keyboard panel. 3. Remove all mounting screws (3) from the Side I/O & Keyboard panel bracket. 4. Unlock this unit by shifting it to the outside direction of the monitor. 5. Release the clamp (4) and take out the Side I/O & Keyboard panel from the bracket.
4.7
Pixel Plus Panel Removal
1
1
E_14490_055.eps 070504
Figure 4-13 Ferrite ring
E_14520_005.eps 100204
Figure 4-11 Pixel Plus panel removal 1. Disconnect all cables from the Pixel Plus panel. 2. Remove all mounting screws from the Pixel Plus panel. 3. Take out the Pixel Plus panel.
Service Modes, Error Codes, and Fault Finding
LC4.2E AA
5.
EN 11
5. Service Modes, Error Codes, and Fault Finding
Index of this chapter: 1. Test Points 2. Service Modes 3. Problems and Solving Tips (related to CSM) 4. ComPair 5. Error Codes 6. The Blinking LED Procedure 7. Fault Finding and Repair Tips 8. Power Supply How to enter To enter SDM, use one of the following methods: · Press the following key sequence on the remote control transmitter: "062596" directly followed by the MENU button (do not allow the display to time out between entries while keying the sequence). · Short "Service" jumpers on the TV board during cold start and apply mains (see Figure "Service jumpers"). Then press the mains button (remove the short after start-up). Caution: Entering SDM by shorting "Service" jumpers will override the +8V-protection. Do this only for a short period. When doing this, the service-technician must know exactly what he is doing, as it could damage the television set. · Or via ComPair.
5.1
Test Points
This chassis is equipped with test points in the service printing. In the schematics test points are identified with a rectangle box around Fxxx or Ixxx. These test points are specifically mentioned in the service manual as "half moons" with a dot in the centre. Perform measurements under the following conditions: · Television set in Service Default Alignment Mode. · Video input: Colour bar signal. · Audio input: 3 kHz left channel, 1 kHz right channel.
1
5.2
Service Modes
Service Default mode (SDM) and Service Alignment Mode (SAM) offers several features for the service technician, while the Customer Service Mode (CSM) is used for communication between the call centre and the customer. This chassis also offers the option of using ComPair, a hardware interface between a computer and the TV chassis. It offers the abilities of structured troubleshooting, error code reading, and software version readout for all chassis. Minimum requirements for ComPair: a Pentium processor, a Windows OS, and a CD-ROM drive (see also paragraph "ComPair").
5.2.1
Service Default Mode (SDM) Purpose · To create a predefined setting for measurements to be made. · To override software protections. · To start the blinking LED procedure. · To inspect the error buffer. · To check the life timer. Specifications · Tuning frequency: 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).
E_14490_056.eps 070504
Figure 5-1 E Service jumpers
EN 12
5.
LC4.2E AA
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.
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 Alignment Mode.
00022
LC42EP1 0.08/S42GV1 0.90
SDM
ERR 0 0 0 0 0 OP 000 057 140 032 120 128 000
00022 LC42EP1 0.08/S42GV1 0.90 ERR 0 0 0 0 0 OP 000 057 140 032 120 128 000 . Clear . Options . Tuner . White Tone . Audio . NVM Editor . SC NVM Editor . ComPair Mode Clear ?
SAM
On
E_14490_052eps 220404
E_14490_051.eps 220404
Figure 5-2 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. How to exit Switch the set to STANDBY by pressing the mains button on the remote control transmitter or the television set. If you turn the television set off by removing the mains (i.e., unplugging the television) without using the mains button, the television set will remain in SDM when mains is re-applied, and the error buffer is not cleared. 5.2.2 Service Alignment Mode (SAM) Purpose · To change option settings. · To display / clear the error code buffer. · To perform alignments. Specifications · Operation hours counter (maximum five digits displayed). · Software version, Error codes, and Option settings display. · Error buffer clearing. · Option settings. · AKB switching. · Software alignments (Tuner, White Tone, Geometry & Audio). · NVM Editor. · ComPair Mode switching. How to enter To enter SAM, use one of the following methods: · Press the following key sequence on the remote control transmitter: "062596" directly followed by the OSD/ STATUS button (do not allow the display to time out between entries while keying the sequence). · Or via ComPair.
Figure 5-3 SAM menu Menu explanation 1. LLLLL. This represents the run timer. The run timer counts normal operation hours, but does not count standby hours. 2. AAAABCD-X.Y/ EEEEEE F.GG. This is the software identification of the main microprocessor followed by the software identification for the scaler IC: A= the project name (LC42). 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). EEEEEE= the scaler sw cluster F= the main sw version no. GG= the sub-version no. 3. SAM. Indication of the Service Alignment Mode. 4. Error Buffer. Shows all errors detected since the last time the buffer was erased. Five errors possible. 5. Option Bytes. Used to set 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 section for a detailed description. 8. Tuner. Used to align the tuner. See "Tuner" in the Alignments section for a detailed description. 9. White Tone. Used to align the white tone. See "White Tone" in the Alignments section for a detailed description. 10. Audio. No audio alignment is necessary for this television set.
Service Modes, Error Codes, and Fault Finding
11. NVM Editor. Can be used to change the NVM data in the television set. See table "NVM data" further on. 12. SC NVM Editor. Can be used to edit Scaler NVM. 13. ComPaIr. Can be used to switch on the television to In System Programming (ISP) mode, for software uploading via ComPair. Caution: When this mode is selected without ComPair connected, the TV will be blocked. Remove the AC power to reset the TV. How to navigate · In SAM, select menu items with the MENU UP/DOWN keys on the remote control transmitter. The selected item will be highlighted. When not all menu items fit on the screen, use the MENU UP/DOWN keys to display the next / previous menu items. · With the MENU LEFT/RIGHT keys, it is possible to: Activate the selected menu item. Change the value of the selected menu item. Activate the selected submenu. · In SAM, when you press the MENU button twice, the set will switch to the normal user menus (with the SAM mode still active in the background). To return to the SAM menu press the MENU or STATUS/EXIT button. · When you press the MENU key in while in a submenu, you will return to the previous menu. 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:
LC4.2E AA
5.
EN 13
1 00022
LC42EP1 0.08/S42GV1 0.90 CSM
2 CODES 0 0 0 0 0 3 OP 000 057 140 032 120 128 000 4 5 6 NOT TUNED 7 PAL 8 STEREO 9 CO 50 CL 50 BR 50 0 AVL Off
E_14490_053.eps 230404
Figure 5-4 CSM menu Menu explanation 1. Indication of the decimal value of the operation hours counter, Software identification of the main microprocessor (see "Service Default or Alignment Mode" for an explanation), and the service mode (CSM= Customer Service Mode). 2. Displays the last five errors detected in the error code buffer. 3. Displays the option bytes. 4. Displays the type number version of the set. 5. Reserved item for P3C call centres (AKBS stands for Advanced Knowledge Base System). 6. Indicates the television is receiving an "IDENT" signal on the selected source. If no "IDENT" signal is detected, the display will read "NOT TUNED" 7. Displays the detected Colour system (e.g. PAL/NTSC). 8. Displays the detected Audio (e.g. stereo/mono). 9. Displays the picture setting information. 10. Displays the sound setting information. How to exit To exit CSM, use one of the following methods: · Press the MENU, STATUS/EXIT, or POWER button on the remote control transmitter. · Press the POWER button on the television set.
5.3
5.3.1
Problems and Solving Tips Related to CSM
Picture Problems Note: The problems described below are all related to the TV settings. The procedures used to change the value (or status) of the different settings are described. Picture too dark or too bright If: · The picture improves when you press the AUTO PICTURE button on the remote control transmitter, or · The picture improves when you enter the Customer Service Mode,
EN 14
5.
LC4.2E AA
Service Modes, Error Codes, and Fault Finding
6. Press the MENU RIGHT key to increase the COLOUR value. 7. Press the MENU button on the remote control transmitter twice to exit the user menu. 8. The new PERSONAL preference value is automatically stored. Menu text not sharp enough If: · The picture improves after you have pressed the AUTO PICTURE button on the remote control transmitter, Then: 1. Press the AUTO PICTURE button on the remote control transmitter repeatedly (if necessary) to choose PERSONAL picture mode. 2. Press the MENU button on the remote control transmitter. This brings up the normal user menu. 3. In the normal user menu, use the MENU UP/DOWN keys to highlight the PICTURE sub menu. 4. Press the MENU LEFT/RIGHT keys to enter the PICTURE sub menu. 5. Use the MENU UP/DOWN keys to select PICTURE. 6. Press the MENU LEFT key to decrease the PICTURE value. 7. Press the MENU button on the remote control transmitter twice to exit the user menu. 8. The new PERSONAL preference value is automatically stored.
Then: 1. Press the AUTO PICTURE button on the remote control transmitter repeatedly (if necessary) to choose PERSONAL picture mode. 2. Press the MENU button on the remote control transmitter. This brings up the normal user menu. 3. In the normal user menu, use the MENU UP/DOWN keys to highlight the PICTURE sub menu. 4. Press the MENU LEFT/RIGHT keys to enter the PICTURE sub menu. 5. Use the MENU UP/DOWN keys (if necessary) to select BRIGHTNESS. 6. Press the MENU LEFT/RIGHT keys to increase or decrease the BRIGHTNESS value. 7. Use the MENU UP/DOWN keys to select PICTURE. 8. Press the MENU LEFT/RIGHT keys to increase or decrease the PICTURE value. 9. Press the MENU button on the remote control transmitter twice to exit the user menu. 10. The new PERSONAL preference values are automatically stored. White line around picture elements and text If: The picture improves after you have pressed the AUTO PICTURE button on the remote control transmitter, Then: 1. Press the AUTO PICTURE button on the remote control transmitter repeatedly (if necessary) to choose PERSONAL picture mode. 2. Press the MENU button on the remote control transmitter. This brings up the normal user menu. 3. In the normal user menu, use the MENU UP/DOWN keys to highlight the PICTURE sub menu. 4. Press the MENU LEFT/RIGHT keys to enter the PICTURE sub menu. 5. Use the MENU UP/DOWN keys to select SHARPNESS. 6. Press the MENU LEFT key to decrease the SHARPNESS value. 7. Press the MENU button on the remote control transmitter twice to exit the user menu. 8. The new PERSONAL preference value is automatically stored. 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. 5.4.2 Black and white picture If: · The picture improves after you have pressed the AUTO PICTURE button on the remote control transmitter, Then: 1. Press the AUTO PICTURE button on the remote control transmitter repeatedly (if necessary) to choose PERSONAL picture mode. 2. Press the MENU button on the remote control transmitter. This brings up the normal user menu. 3. In the normal user menu, use the MENU UP/DOWN keys to highlight the PICTURE sub menu. 4. Press the MENU LEFT/RIGHT keys to enter the PICTURE sub menu. 5. Use the MENU UP/DOWN keys to select COLOUR.
5.4
5.4.1
ComPair
Introduction ComPair (Computer Aided Repair) is a service tool for Philips Consumer Electronics products. ComPair is a further development on the European DST (service remote control), which allows faster and more accurate diagnostics. ComPair has three big advantages: ComPair helps you to quickly get an understanding on how to repair the chassis in a short time by guiding you systematically through the repair procedures. ComPair allows very detailed diagnostics (on I2C level) and is therefore capable of accurately indicating problem areas. You do not have to know anything about I2C commands yourself because ComPair takes care of this. ComPair speeds up the repair time since it can automatically communicate with the chassis (when the microprocessor is working) and all repair information is directly available. When ComPair is installed together with the SearchMan electronic manual of the defective chassis, schematics and PWBs are only a mouse click away. Specifications ComPair consists of a Windows based faultfinding program and an interface box between PC and the (defective) product. The ComPair interface box is connected to the PC via a serial or RS232 cable. In this chassis, the ComPair interface box and the TV communicate via a bi-directional service cable via the service connector. The ComPair faultfinding program is able to determine the problem of the defective television. ComPair can gather diagnostic information in two ways: · Automatic (by communication with the television): ComPair can automatically read out the contents of the entire error buffer. Diagnosis is done on I2C level. ComPair can access the I2C bus of the television. ComPair can send and receive I2C commands to the micro controller of the television. In this way, it is possible for ComPair to
Service Modes, Error Codes, and Fault Finding
communicate (read and write) to devices on the I2C busses of the TV-set. · Manually (by asking questions to you): Automatic diagnosis is only possible if the micro controller of the television is working correctly and only to a certain extend. When this is not the case, ComPair will guide you through the faultfinding tree by asking you questions (e.g. Does the screen give a picture? Click on the correct answer: YES / NO) and showing you examples (e.g. Measure test-point I7 and click on the correct waveform you see on the oscilloscope). You can answer by clicking on a link (e.g. text or a waveform picture) that will bring you to the next step in the faultfinding process. By a combination of automatic diagnostics and an interactive question / answer procedure, ComPair will enable you to find most problems in a fast and effective way. Beside fault finding, ComPair provides some additional features like: · Up- or downloading of pre-sets. · Managing of pre-set lists. · If both ComPair and SearchMan (Electronic Service Manual) are installed, all the schematics and the PWBs of the set are available by clicking on the appropriate hyperlink. Example: Measure the DC-voltage on capacitor C2568 (Schematic/Panel) at the Mono-carrier. Click on the 'Panel' hyperlink to automatically show the PWB with a highlighted capacitor C2568. Click on the 'Schematic' hyperlink to automatically show the position of the highlighted capacitor. 5.4.3 How To Connect 5.5.1 1. First, install the ComPair Browser software (see the Quick Reference Card for installation instructions). 2. Connect the RS232 interface cable between a free serial (COM) port of your PC and the PC connector (marked with 'PC') of the ComPair interface. 3. Connect the mains adapter to the supply connector (marked with 'POWER 9V DC') of the ComPair interface. 4. Switch the ComPair interface "off". 5. Switch the television set "off" with the mains switch. 6. Connect the ComPair interface cable with the connector on the rear side of the ComPair interface (marked with 'I2C') and the additional ComPair interface cable. Connect the other side of the additional ComPair interface cable with the ComPair (or Service) connector at the rear side of the TV. 7. Plug the mains adapter in a mains outlet, and switch the interface "on". The green and red LEDs light up together. The red LED extinguishes after approx. 1 second while the green LED remains lit. 8. Start the ComPair program and read the 'Introduction' chapter. 5.4.4 How To Order
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ComPair order codes (EU/AP/LATAM): · Starter kit ComPair32/SearchMan32 software and ComPair interface (excl. transformer): 3122 785 90450. · ComPair interface (excluding transformer): 4822 727 21631. · Starter kit ComPair32 software (registration version): 3122 785 60040. · Starter kit SearchMan32 software: 3122 785 60050. · ComPair32 CD (update): 3122 785 60070 (year 2002, 3122 785 60110 (year 2003). · SearchMan32 CD (update): 3122 785 60080 (year 2002), 3122 785 60120 (year 2003), 3122 785 60130 (year 2004). · ComPair interface cable: 3122 785 90004. · ComPair firmware upgrade IC: 3122 785 90510. · Transformer (non-UK): 4822 727 21632. · Transformer UK: 4822 727 21633. · Additional ComPair interface cable: 3139 131 0379. Note: If you encounter any problems, contact your local support desk.
5.5
Error Codes
The error code buffer contains all errors detected since the last time the buffer was erased. The buffer is written from left to right. When an error occurs that is not yet in the error code buffer, it is displayed at the left side and all other errors shift one position to the right. How To Read The Error Buffer You can read the error buffer in 3 ways: · On screen via the SAM (if you have a picture). Examples: ERROR: 0 0 0 0 0 : No errors detected ERROR: 6 0 0 0 0 : Error code 6 is the last and only detected error ERROR: 9 6 0 0 0 : Error code 6 was detected first and error code 9 is the last detected (newest) error · Via the blinking LED procedure (when you have no picture). See "The Blinking LED Procedure". · Via ComPair.
5.5.2
How To Clear The Error Buffer The error code buffer is cleared in the following cases: · By using the CLEAR command in the SAM menu: To enter SAM, press the following key sequence on the remote control transmitter: "062596" directly followed by the OSD/STATUS button (do not allow the display to time out between entries while keying the sequence). Make sure the menu item CLEAR is highlighted. Use the MENU UP/DOWN buttons, if necessary. Press the MENU RIGHT button to clear the error buffer. The text on the right side of the "CLEAR" line will change from "CLEAR?" to "CLEARED" · If the contents of the error buffer have not changed for 50 hours, the error buffer resets automatically. Note: If you exit SAM by disconnecting the mains from the television set, the error buffer is not reset.
TO SERVICE CONNECTOR
PC
VCR
Power 9V DC
I2C
E_06532_008.eps 190204
5.5.3
Error Codes In case of non-intermittent faults, write down the errors present in the error buffer and clear the error buffer before you begin the repair. This ensures that old error codes are no longer present.
Figure 5-5 ComPair Interface connection
EN 16
5.
LC4.2E AA
Service Modes, Error Codes, and Fault Finding
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. 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 via the mains switch 2. Short circuit the SDM jumpers (keep short circuited) 3. Press P+ or Ch+ on the local keyboard (and keep it pressed) 4. Switch on the TV set via the mains switch 5. When the set has started up the P+/Ch+ button can be released and the short circuit of the SDM jumpers can be removed. 6. The red LED will be on continuously to indicate that the download is initiated (normally when SDM is activated the red LED will start with the Blinking LED sequence). 7. Wait +/- 30 Seconds (time needed to download default values to the NVM) Result: The set is in SDM, the NVM is loaded with default values and the blinking LED is not activated (The blinking LED is not activated in this case to show that the download has been performed), the LED will be on. 5.7.3 Tuner and IF No Picture in RF mode 1. Check whether picture is present in AV. If not, go to Video processing troubleshooting section. 2. If present, check that the Option settings are correct. 3. Check that all supply voltages are present. 4. Check if I2C lines are working correctly (3.3V). 5. Manually store a known channel and check if there is IF output at Tuner pin 11. 6. Feed in 105 dBuV at Tuner pin 11 and check whether there is RGB output from Video Processing IC. If yes, Tuner may be defected. Change 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 1. Check whether the Service jumper (#4022, 08 05 size) is present. If yes, remove it. 2. Check whether SEL_IF pin is according to what is specified.
If possible, check the entire contents of the error buffer. In some situations, an error code is only the result of another error and not the actual cause of the problem (for example, a fault in the protection detection circuitry can also lead to a protection). Table 5-1 Error code overview
Error 0 1 2 3 4 Device Not applicable Not applicable Not applicable Not applicable GM1501 Error description No Error A7A11 Check item Diagram
I2C error while communicating 7401 with the Genesis Scaler 7530 and/or Flash-ROM is faulty/ empty +5v protection General I2C error 7930
5 6 7 8 9 10 11 12 13 14 15 16
Not applicable I2C bus Not applicable M24C32 M24C16 Tuner Not applicable Not applicable Not applicable K4D263238M TDA9178T/N1 EPIC12F
A6
7011, 3088, A2 3096 A11 A2
I2C error while communicating 7531 with the Scaler EEPROM I2C error while communicating 7099 with the EEPROM
I2C error while communicating 1302, 3302, A1 with the PLL tuner 3303, 3327 Read-write error with the Scaler SDRAM 7501 A10 A3 PP1
I2C error while communicating 7560 with Histogram I2C error while communicating 7101 with EPLD on Pixel Plus panel
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 starts is repeated. Any RC5 command terminates this sequence. Example of error buffer: 12 9 6 0 0 After entering SDM, the following occurs: · 1 long blink of 5 seconds to start the sequence, · 12 short blinks followed by a pause of 1.5 seconds, · 9 short blinks followed by a pause of 1.5 seconds, · 6 short blinks followed by a pause of 1.5 seconds, · 1 long blink of 1.5 seconds to finish the sequence, · The sequence starts again at 12 short blinks.
5.7
Fault Finding and Repair Tips
Notes: · It is assumed that the components are mounted correctly with correct values and no bad solder joints. · Before any fault finding actions, check if the correct options are set.
5.7.1
NVM Editor In some cases, it can be handy if one directly can change the NVM contents. This can be done with the "NVM Editor" in SAM mode.
Service Modes, Error Codes, and Fault Finding
5.7.4 Video Processing No power 1. Check +12 V and 3V3 at position 1910. 2. If no supply, check the connector 1910. 3. If it is correct, check the power supply board. Power supply is correct but no green light 1. Check the two connectors 1005 and 1601, if they are properly inserted. 2. If they are inserted correctly, check if the 3V3 is present. No picture display 1. Check the RGB signal. 2. If it is present, check 3-IC7016 (NE555). 3. If it has output, the problem is in SCALER part. 4. Otherwise, check H-out on pin 2 of NE555. If the input signal of pin2 is present, but no output, the IC is failed. Note: · If the H-out (pin 67) doesn't have signal or the level is low, check the output of NE555 (pin 3) during start up. · If the H-out (pin 67) has a signal (or has a signal for a very short time), change IC7016 (NE555). No TV but PC is present 1. Check if HSYNC and VSYNC are present at PIN 3 of 7071 and 7015. 2. If they are present, check RGB output. 3. If there is no RGB output, the IC TDA120xx can be failed. Comb Filter not working 1. Check the option bit 5 in SAM. 2. Check NVM setting. Address 1229 is 0000. 5.7.5 Power Supply Check fuses This power supply contains three fuses. One is near the mains inlet (marked on the board as 1102) and two other are near the output connectors (marked 1610 and 1660). 1. Check with power supply in off state by means of ohmic measurement. 2. Fuse 1102 may open in case of severe lightning strikes and/or failures in the power supply. Despite the fact, that this fuse is mounted in a fuse holder and the marking text on the board, it is not meant to be field replaceable. 3. Fuses 1610 and 1660 may open in case a severe overload of the 12 V outputs. Replacement of the power supply is needed, but not before the cause of the overload conditions is resolved. Standby mode 1. Apply a 12 ohm load resistor of sufficient power rating to all outputs (+3 V3, +12 VAL, +12 VL and +24 V). Connect the STBY pin to GND. 2. Over an input voltage range of 90 V_ac to 264 V_ac only the +3 V3 output shall be up and within regulation (±5%). The voltage on the POWER DOWN pin shall be < 0.3 V at an input voltage below 160 V_ac, and 3.3 V ±10% at an input voltage higher than 240 V_ac. Normal mode: 1. Apply a 12 ohm load resistor of sufficient power rating to all outputs (+3 V3, +12 VAL, +12 VL and +24 V). Connect the STBY pin to the +3 V3 output. 2. Over an input voltage range of 90 V _ac to 264 V_ac all outputs shall be up and within regulation (±5%). The voltage on the POWER DOWN pin shall be 3.3 V ±10% over the entire input voltage range. Additionally, the voltage on the big capacitor mounted flat on the PCB shall be 400 V ±10%
LC4.2E AA
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EN 18
5.
LC4.2E AA
Service Modes, Error Codes, and Fault Finding
Personal Notes:
E_06532_012.eps 060804
Block Diagrams, Testpoint Overviews, and Waveforms
LC4.2E AA
6.
19
6. Block Diagrams, Testpoint Overviews, and Waveforms
Wiring Diagram
Wiring Diagram 26" LVDS Connection
Rigth Speaker
INVERTER
LCD SCREEN LVDS CONNECTION
Left Speaker
1200
12P
1910
4P
1704 LVDS OUTPUT 1409
1003 22P
12P
1403
9P
20P
1002
A
LCD-TV SCALER
22P
PP
PIXEL PLUS PANEL
1001
1520
BACK LIGHT CONNECTION LCD SCREEN
SERVICE COMPAIR CONNECTION 1303
14P
9P
1304
1005
1601
D
20P
3P
4P
45P
45P
SIDE I/O & LKB
45P
1103
45P
1698
20P
1104
1301
1302
H
1001
REAR I/O SCART/PCHD
6P
POWER IN
6P
1540
J
FRONT IR/LED
E_14490_101.eps 030804
Block Diagrams, Testpoint Overviews, and Waveforms
LC4.2E AA
6.
20
Block Diagram Tuner and IF Video
A13 A
TUNER +VIF +VTUN +5VSW 1302 6,7 TV FM SCL SDA
COMPAIR
ERR 10
A2
1328
HERCULES
SYSTEM PAL-MULTI/SECAM A 4 NTSC CHINA/NTSC-AP
7011 - IF 9 11 4331 10 5 1 F305 3311 3 8 VIF2 25 F306 2321 4327 2 7 VIF1 24 Sound Traps
7011 TDA12021 TDA12001 TDA12011 CON RGB Matrix Blue & Black Stretch Gamma Corr. BRI RO GO BO 85 86 87
A3
HISTOGRAM
7014 CVBS1 Input sw. EF 7013 EF 7012 EF B_SDTV A13 G_SDTV A13 R_SDTV A13
cvbs/y RF_AGC 31 AGC Detect CVBS/Y-X INA..D QSS Mixer/ AM Demod. QSS/FM AM C-X c PAL/NTSC/ SECAM Decoder & Baseband Delay Uint Vint Dig. 2H/4H Combfilter Y Delay Adj. Yint
4
RGB Matrix Blue & Black Stretch Gamma Corr.
A2 A2
R_OSD
G_OSD
1 3 1303 7316
29 6323 4333 4334 3323 7320 2 3 1330 7 8 S IF1 S IF2 P50 STATUS_2 STATUS_1 17 2 31 1005
1103
30
Chroma
Skin Tone U/V Tint Saturation
Fast Blanking
B_OSD
2
SAT
2020 7018 +5VSW 7016# 8 VCC 2 THR TR 4 RES 7 DISC 3 OUT CTRL 5 2062 2028 7015# 8 VCC 2 THR TR 4 RES 7 H_CS_SDTV DISC OUT 3 CTRL 5 2042 2021 SANDCASTLE # = NE555 TIMER 2022
SSIF A2 SEL_IF A2
+5VSW
YUV
3021
A2 14 38 30
1005
Output sw. SC1_CVBS_IN 55
Peaking SCAVEM U/V Delay
SCAVEM on Text cvbs/y
6
3057
CS1A..D
H/V
6
H13 A
REAR IO SCART SCART 2 21 20 Y/CVBS-In 10 SC1_CVBS_IN SC2_Y_IN 15 SC2_C_IN 7138 EF SC2_CVBS_MON_OUT 32 16 14 22
YUV IN/OUT Sync Sep H-OSC H-Shift H-Drive
A13
SVHS_AV2_Y_CVBS_IN 58 SC2_Y_IN 51
HOUT
67
+
RGB/YPRPB Insert YUV Interface
H/V
CVBS/Y-X
FB/SC
66
16 MON-Out 15 C-In
40 32 5 24
1005
SVHS_C_IN SC2_C_IN SC2_CVBS_RF_OUT SC2_CVBS_MON_OUT
59 52
INSSW3 R/Pr-3 B/Pb-3 YOUT UOUT VOUT G/Y3
C-X
7019 VDRA Vertical & EastWest Geometry 23 3058
+5VSW
3025
16 P50 Status L-In 12 L-Out 11 R-Out 2 R-In 12 11
L R
P50_LINE_ITV_IR_SW STATUS_2
44 15
43 64 cvbs
VDRB
22
3010
1
SC2_LR_MON_OUT 24,27 SC2_LR_IN 18,20 7119 EF SCV1_CVBS_RF_OUT SC1_FBL_IN 41 42 35 30 34 29
4 11 16 12
SC1_FBL_IN SC1_COMP_R_V_IN SC1_COMP_AV1_G_Y_CVBS_IN SC1_COMP_B_U_IN Y_NOTCH HISTORGRAM A7 5560 +12VSW 1
77 78
79
80
74
75
76
70
71
72
7017# 8 VCC 2 THR TR 4 RES 7 DISC 3 OUT CTRL 5 2034 2045 6
VIN
UIN
YIN
V_SDTV I341
A13
SCART 1 21 20 CVBS-In 10 9 9 TER-Out 7 R-In FBL-In 7 6 Status L-In 2 R-In 2 1 LR AUDIO-OUT 5
SC1_COMP_R_V_IN SC1_COMP_AV1_G_Y_CVBS_IN SC1_COMP_B_U_IN STATUS_1
A3
7562 3 +8VSW_2 20 2561 2
6
8
9
16
17
19
6 G-In 5 B-In
19,22 SC2_LR_MON_OUT 26,28 SC2_LR_IN 7,9 SC1_COMP_AV1_LR_IN SC1_LR_RF-OUT
7560
Pix Improvement ERR 15 (Histogram) 11 14
SANDCASTLE
1
A5
AUDIO AMPLIFIER
+3V3STBY 7740
A3 7 HP_LOUT HP_ROUT
2 L-Out 1 R-Out
SC1_COMP_AV1_LR_IN 37,39 1
L R L R
SC1_LR_RF-OUT 43,45 Const_LR_OUT 25,28 +5VSW HP_DET_R_DC
1104
1,3
A7
SDA SCL
AUDOUTLSL
6
18,21 Const_LR_OUT 15 43 42 +5VSW HP_DET_R_DC HP_DET_IN A5 A5
31 3 4 6 8
AUDOUTLSR A2 A2
2
1
7708
D
SVHS 2
SIDE AV
1301
HP_DET_IN 20 18 SVHS_C_IN SVHS_AV2_Y_CVBS_IN
20 18
AUD-SUP 7703-1 34,36 SVHS_LR_IN 44,45 HP_LROUT A5 3746 3706 7 F702 12 ST-BY A3 AD Conv Std Stereo Decoder I2S Proc 61 60 7376-A 1:1 A3 HP_DET_IN HP_DET_R_DC AUDOUTLSL F701 +3V3STBY 7706 A2 SOUND_ENABLE 62,63 A6 POWER_DOWN A2 STANDBY 7376-B 7377-B SC2_LR_MON_OUT 36,37 7370 3 2921 2 SC1_LR_RF_OUT +8VSW_TV F913 Const_LR_OUT E_14490_018.eps 040804 7371 7372 OUT_MUTE A2 EXT_MUTE 1 2 4 5 9 10 12 13 14 3 3747 6 7703-2 AUD-SUP 3706 MUTE 13 14 + 7709 6,15 VCC + F705 4 2 5 19 F707 16 1 F708 F706 3 2 LEFT
1704
AUD-SUP C Y VIDEO AV3 L R 14,16 11 13 HEADPHONE 10,12 14,16 11 13 10,12 7
3931
RIGHT
SVHS_LR_IN 10,12 HP_LROUT 1,2
A2
HERCULES
A3
7011 - SOUND
HISTOGRAM 7377-A 1:1
ST_BY AUDOUTLSR
8
7930 S Q R OSC REF VCC 6 5
1
QSS/FM
2 3
2931 5931
A1
SSIF(Tuner FM)
33
4
6930 F915 +5VSW F912
SC1_COMP_AV1_LR_IN 34,35 SVHS_LR_IN SC2_LR_IN +VTUN A12 AudioIN2LR 49,50 56,57 53,54 Audio Select ADC/DAC
A6
1910
TV SUPPLY F903
Audio Control Vol/Treb/ Bass Features DACs
1 3
AUD-SUP +3V3STBY F906 F905 +12VUNREG 5958 F958 A14 +12VSW A2,A7 A2 A7 A7 5920 1 7920 7910 3910
TO/FROM 1200 OF POWER SUPPY UNIT
4 8 9 10 11 12
6910 6911
8
ST_BY 3732 7710
??
POWER_DOWN STANDBY BU_LIGHT_ADJ1 LAMP_ON-OFF
11
Block Diagrams, Testpoint Overviews, and Waveforms
LC4.2E AA
6.
21
Block Diagram Scaler
A7 A2
HERCULES 7011 u-Processor A13 KEYBOARD A13 LIGHT-SENSOR-SDM A13 IR A3 STATU S_2 A3 STATU S_1 A3 P50_LINE_ITV_IR_SW P50 7075 120 115 97 119 116 123 114 111 107 108 HERCULES 109 IC
ERR 6
SCALER
A11
7532
FLASH/CONTROL
+3V3_IO SCREEN SIZE PRESENT ONLY FOR 23" (2) PRESENT ONLY FOR 26"
(1)
3547-2
3547-3
SDM PINS 4022 SEL_IF SOUND_ENABLE PC-TV-LED SCL SDA
A13
PCHD-MUX 7605 14 1 15 5 7604
7607 SD_HD_SEL PC_HD_SEL 2 3
L SDTV ENABLE
H HDTV DISABLE
PIN 22 9
+3V3STBY 5 4
7531 5 NVM 6 NVM-WP 7
ADDRESS
VCC
FLASH ROM
3546-2
6 9
8
V
A12 #RESET
3546-3
A1 A2 H_CS_SDTV 13 A2 V_SDTV 1 A5 HS 12 VS 2 A13 A7 SD_HD_SEL PC_HD_DETPC_HD_DET+ A2 R_SDTV A5 A7 A7 A5 A2 G_SDTV A2 B_SDTV
4 H_CS
RESET GND 2,3
3551 (1) 3552 (2)
DATA SCL_IO SDA_IO
9,11 11 7604-5 6604 10 PC_HD_DET
OCMADDR1
OCMADDR2
MSTR_SCL
5 6 7099 104 NVM_WP 7 NVM
ERR 9
A7
GPIO_G09_B4
MSTR_SDA
F624 F625 F626
27 3 7 25 1 5 21 22
7607
EXT. ROM INTERFACE
RESET
ADDRESS
DATA 1403 1,2 3,4,5 6 7 8 9 10,11 12 14 15 13,16 TXBCTXB217 18 19 TXB2+ 20
FOR SETS WITH PIXEL+ PIXEL+ PANEL FOR SETS WITHOUT PIXEL+ TO LVDS CONNECTOR LCD PANEL
6605 SOG 17 F613 14 F615 11 F617 R_PR+ G_Y+ B_PB+ R_PR9 G_YB_PBANALOG INPUT PORT
PAN_VCC 7401 GM1501 SXGA DISPLAY CONTROLLER TXB0TXB3+ TXB0+ TXB3TXB1DISPLAY GRAPHIC ZOOM TIMING GEN TXB1+ TXBC+
+3V3STBY
7001,7003 +1V8_A
102 3,93,96 99 98 122 126 14 DECDIG 128 10 11
EXT_MUTE TV_SC_COM TV_IRQ STANDBY P50 POWER_DOWN 1001 2007
RED_PR GRN_Y BLU_PB
+1V8_B 100,117,118,124 7070 127
A3 A7 HD_FILTER A7 SD_HD_SEL A6 A7 PC_HD_SEL
+3V3STBY +5VSW
4,5,7,9,88,90,94 15,69,82
13
7604-6 12
2006
A10
7501
SDRAM
BRIGHTNESS/CONTRAST/HUE/SAT
H2
PC-IN
PCHD-IO
PP2
1002
LVDS IN
7201 THC63LVDF84B
PP3
LVDS INTERFACE RECEIVER
EPLD I/O
PAN_VCC TXB0TXB3+ TXB0+
7403 THC63LVDM83R
HS VS
37 38 18 19 35 33 31 22 23 6 7 26 25 9 10
9 8 28 27 11 13 15 24 23 40 39 20 21 37 36
HS
OUT BLENDER
FRAME STORE CONTROL
OSD CONTROLLER
VS PC_HD_DET+ PC_HD_DETBLU_PB GRN_Y RED_PR UART_TX UART_RX A7 A7 9, 17, 19 PC_HD_SEL A7 7606 1 15 11 2 14 12 SDRAM
ERR 14
ADDRESS
7101 EP1C12F256C8
1,2 3,4,5 6 7 8 9 10,11 12 14 15 13,16 17 18 19 20
1403
15
5
PC_HD_DET+ 3709 BLU_PB
20p
10 LVDS_SIGNAL_IN
EPLD (PIXEL+ PROC)
TXB3TXB1TXB1+ TXBC+ TXBC-
DATA
11
1
GRN_Y RES RES 7693 8 6 DDC NVM 5 7694 8 RED_PR UART_TX DVI NVM 6 5 UART_RX RX2-IN RX2+IN SCL_DVI SDA_DVI RX1-IN RX1+IN DDC_5V 3691 3682 3710 6691 5692 6692 +3V3STBY +5VSWI HOT_PLUG RX0-IN RX0+IN RXC+IN RXC-IN PC_AUDIO_L
PP1
7102 EPCS4518
EPLD CONTROL
LVDS TRANSMITTER
DDC_5V DVI-IN 1 2 6 7 9 10
EPLD FLASH ROM
7108 OC
SDA SCL RESET_IN SYNC_OUT
TXB2TXB2+
VIDEO ZOOM
CLOCK GENERATOR
DVI/HDMI INPUT PORT UART INTERFACE
A9
SCALER INTERFACE 1409 SDA_IO 1 3 4 5 7 9 1001
PP4
1 3 4 5 7 9
POWER SUPPLY SDA SCL 7505
7504 SI2307D5
F521
+3V3 7501 LF15ABDT F503 +1V1
1698
1601
3,11,19,22 14 15 16 17 18 23 24 PC-AUDIO-IN
29 28 20 12 13 15 16 4 2 40 41 43 42 45
17 18 26 34 33 31 30 42 44 8 5
+3V3STBY +5VSWI
MICROCONTROLLER GPIO_G07_B6 GPIO_G07_B2 INTERNAL RAM
SCL_IO PIXEL+_RESET PIXEL+_SYNC +3V3STBY +5V+SWI
RESET_IN SYNC_OUT +3V3_IN +5
+5V
HOT_PLUG A13 A6 4836 AudioIN2L 4838 AudioIN2R PC-TV-LED LED-SEL 7640 6640 +5VSWI 3640 +3V3STBY A12 A2 A2 PC_HD_DET POWER_DOWN TV_SC_COM Y_NOTCH +3V3_PLL 2488 1401
GPIO_G09_B1 OCM_INT1 GPI_G09_B3 GPIO_16 OCM_OD0 OCM_OD1 VGA_SCL VGA_SDA UART_TX UART_RX SCL SDA TV_IRQ PC_HDMI-AUDIO_SEL GPIO_G07_B0 GPIO_G07_B5 GPIO_G09_B0 SD_HD_SEL PC_HD_SEL PANEL-PWR-CTL HD_FILTER LAMP_ON-OFF ** FOR 17" ONLY A13 A13 A2 A2 A2 A12 A13 A13 A14 A13 A6 1 3 2 1304
PC_AUDIO_R PC-TV-LED LED-SEL LIGHT-SENSOR-SDM +3V3STBY 6 9 8 4 3 IR KEYBOARD 2 1104 1301
3 LIGHT-SENSOR-SDM 4 1 IR KEYBOARD A2
2487
GPIO_G09_B4
A14
SUPPLY 7952
+3V3STBY 1 S Q 6995 3
7995
+1V8 2 I996 2960 1
5996 5997 5998 +1V8_CORE +3V3STBY +1V8_ADC +1V8_DVI 1
7992 3 I992 2994 2 7953 5959 1 3 F960 2960 2 PAN_VCC 5994 +2V5_DDR
PPWR PWM1 PBIAS
1540
1302
J
FRONT CONTROL 6540
6 2 1 3
9
8
4
3
2 +12VSW
8
2 1 3
R 7 OSC REF VCC 6 2953 5
2 3
4445**
* FOR 23" & 26" 3452* BU_LIGHT_ADJ1 A6
2956
3951//52
5953
5952
7543
6 4
6 4 LKB 5x 1309~13
4 3954
6951
A7 PANEL-PWR-CTL 7955
3444* OCM_TIMER1
7449*
3955
F954 2957
7954 3958
6541
+5VSWI
D
SIDE AV
UART FOR SERVICE
A1 A3
E_14490_102.eps 040804
TO LCD PANEL (LVDS)
Block Diagrams, Testpoint Overviews, and Waveforms
LC4.2E AA
6.
22
Testpoint Overview TV & Scaler Board (Bottom Side)
F001 F002 F003 F004 F005 F006 F007 F008 F009 F010 F011 F012 F013 F014 B4 C3 D2 C5 C4 B3 B4 B3 A3 B3 B3 A3 C3 C3 F018 F019 F020 F021 F022 F023 F024 F025 F026 F027 F028 F029 F030 F031 C4 B4 D4 B4 A4 B4 D3 D3 D4 A2 C4 C4 C3 C3 F032 F033 F034 F035 F036 F037 F038 F039 F040 F041 F042 F043 F044 F045 C3 D4 D3 D4 C4 A2 D4 A2 D4 D4 C5 C4 C4 D4 F046 F047 F048 F049 F050 F051 F052 F053 F055 F056 F057 F058 F059 F060 D3 D3 D4 D4 C4 D3 B3 D3 D4 B4 B3 D4 A4 B5 F061 F062 F063 F064 F067 F068 F069 F070 F071 F072 F073 F074 F075 F076 D5 D5 C4 A3 D4 C5 C5 B5 B5 D4 B5 B4 D4 B4 F090 F093 F094 F095 F096 F097 F099 F301 F302 F303 F305 F306 F307 F308 C3 C2 C4 D5 D5 C4 C2 D3 D1 D1 C2 C1 C1 D1 F309 F310 F311 F312 F313 F314 F315 F316 F317 F401 F402 F403 F404 F405 B2 D3 C3 D2 D2 D2 D2 C2 C2 C6 A5 A5 A5 A8 F406 F411 F412 F413 F414 F415 F416 F417 F418 F434 F436 F437 F444 F460 A8 A8 A8 A8 A8 A8 A8 A8 A8 A6 A6 A6 B7 C6 F461 F462 F463 F465 F466 F470 F478 F482 F486 F501 F530 F531 F532 F533 C7 C6 C6 C5 C6 C5 A7 A6 B6 B8 A5 B6 B6 B6 F534 F535 F536 F537 F538 F539 F540 F541 F580 F584 F587 F588 F590 F601 C5 B6 A6 A6 A5 A5 A6 A6 A3 B4 A4 A4 A2 D7 F602 F603 F604 F605 F606 F607 F608 F609 F610 F612 F613 F615 F617 F618 C6 D6 C5 C5 D7 C5 D6 D7 D7 C6 C6 C5 C6 C6 F619 F620 F621 F622 F624 F625 F626 F627 F628 F629 F630 F631 F632 F633 C7 C6 C7 C7 C5 D5 D5 D7 C7 D7 C7 D7 D7 D7 F634 F635 F636 F637 F638 F639 F640 F641 F642 F643 F644 F645 F646 F647 D5 D5 D7 C5 D7 D7 D6 D6 D6 D5 C5 D5 D6 D6 F701 F702 F705 F706 F707 F708 F710 F711 F712 F713 F714 F715 F801 F802 A2 A1 A2 A2 A2 A2 D4 B3 B4 A1 A2 A2 D8 D8 F803 F804 F805 F806 F807 F808 F809 F810 F811 F812 F813 F814 F815 F816 D8 C8 D8 C7 C7 C8 C8 D7 C7 D8 D8 D8 D8 D8 F817 F818 F819 F820 F821 F822 F823 F824 F826 F827 F828 F829 F830 F902 D8 D8 C8 D8 D8 D8 D8 D8 C7 C7 D7 C7 D7 A1 F903 F904 F905 F906 F907 F908 F909 F910 F912 F913 F914 F915 F952 F953 A2 A2 A2 A5 A4 D3 A5 A5 A3 A4 A1 A3 A6 A6 F954 F955 F958 F960 F988 I001 I002 I003 I004 I005 I006 I007 I008 I009 A6 A7 A5 A6 C6 B4 A3 B4 B4 B3 A3 B3 B4 B3 I010 I011 I013 I015 I017 I018 I019 I020 I021 I022 I023 I024 I025 I026 B3 B3 B4 B3 C3 B3 B3 B3 C3 C2 B4 B4 C3 C3 I027 I028 I029 I030 I031 I032 I033 I034 I035 I036 I037 I039 I040 I041 C3 C3 C3 C4 C4 C3 C3 C4 C4 B4 C4 C4 C4 B4 I042 I043 I044 I045 I046 I047 I048 I049 I050 I051 I053 I054 I055 I056 B3 C3 C2 C4 C4 C4 C4 C4 C4 C4 C4 C4 C4 C3 I057 I058 I059 I060 I062 I063 I064 I065 I066 I067 I068 I069 I070 I071 C4 B4 B4 B4 B3 B3 C3 D4 D3 D3 D3 C3 C4 C3 I072 I073 I074 I075 I076 I077 I078 I079 I080 I081 I082 I083 I084 I085 C3 C4 C4 C4 B4 B3 B2 B4 B4 C4 C5 C5 C5 C5 I086 I087 I088 I089 I091 I092 I094 I095 I096 I097 I098 I099 I302 I303 C4 B4 A3 A4 C4 C4 A4 A3 A4 A4 A4 A4 D1 C1 I304 I311 I313 I317 I318 I319 I320 I321 I322 I324 I325 I340 I341 I342 D1 C2 C2 D2 C3 C2 C1 C2 C2 C1 C2 A4 A4 A4 I343 I344 I345 I346 I347 I348 I349 I350 I351 I352 I353 I354 I355 I356 A4 A4 A5 A4 A4 B4 B4 A2 A2 A2 A3 C3 C3 C3 I357 I358 I359 I360 I361 I362 I363 I371 I401 I402 I415 I416 I423 I424 B4 B4 C4 B4 B5 B5 B4 C3 B5 B6 A8 A7 B6 C6 I425 I426 I427 I428 I436 I437 I438 I439 I440 I441 I442 I443 I444 I445 I446 I502 I503 I585 I586 I601 I604 I605 I606 I607 I608 I609 I610 I611 I612 I614 I615 I616 I618 I619 I620 I621 I622 I623 I624 I625 I626 I627 I628 I629 I633 I634 I635 I636 I637 I638 I639 I640 I641 I642 I643 I644 I645 I646 I647 I648 I649 I650 I651 I701 I702 I703 I704 I705 I706 I707 I709 I710 I711 I712 I713 I714 I715 I716 I717 I718 I719 I720 I721 I723 I724 I725 I726 I727 B6 B6 C7 C7 B5 A5 B6 B6 B6 B5 C6 C6 C7 C7 C6 B8 B8 A3 A3 D6 C6 D6 D6 D6 D6 C6 C6 D6 D6 C6 D6 C6 C6 C6 C6 D7 D6 D7 D5 D5 D6 D6 D6 D6 D7 D7 D7 D6 D6 C7 C6 C6 C7 C6 D6 D6 D7 D6 C5 D5 D5 D5 D6 A2 A2 A2 A2 A2 A2 A2 A1 B2 A1 A1 A1 D3 D3 D3 A4 B2 B1 A1 A4 A2 A2 A2 D3 D3 I728 I729 I730 I731 I732 I737 I738 I739 I740 I741 I802 I803 I810 I811 I812 I813 I814 I815 I816 I817 I818 I819 I822 I829 I833 I834 I836 I838 I840 I841 I842 I844 I847 I848 I901 I902 I903 I904 I905 I906 I907 I908 I910 I951 I952 I953 I954 I955 I956 I958 I959 I961 I992 I995 I996 A2 A2 B1 B2 A2 A2 A2 A2 A2 A2 D8 D8 D7 C7 D8 D7 C8 D8 C7 D7 C8 C8 D8 D7 D7 D8 D7 D7 D8 C7 C8 C7 D8 D8 A4 A4 A4 A4 A4 A4 A4 A4 A4 A8 A8 A8 A8 A8 A6 A7 A7 A7 A8 C8 C8
SERVICE TESTPOINT
3139 123 5804.2
F302 F303 F306 F613 F615 F617 F624 F625 F626 F701 F702 F705 F706 F707 F708 I341 I344 I904
E_14490_021.eps 030604
1V / div DC 20us / div
1V / div DC 20us / div
200mV / div AC 20us / div
200mV / div DC 20us / div
200mV / div DC 20us / div
200mV / div DC 20us / div
500mV / div DC 20us / div
500mV / div DC 20us / div
500mV / div DC 20us / div
20mV / div AC 1ms / div
20mV / div AC 1ms / div
50mV / div AC 1ms / div
50mV / div AC 1ms / div
50mV / div AC 1ms / div
50mV / div AC 1ms / div
1V / div DC 5ms / div
1V / div DC 20us / div
2V / div DC 5us / div
F011 F012 F903 F905 F906 F915 F912
1V9 1V9 11V9 3V3 11V6 5V3 33V7
F913 F958 F960 F954 F992 F996
8V 11V6 11V4 5V4 2V5 1V8
F305 No wafeform available
Block Diagrams, Testpoint Overviews, and Waveforms
LC4.2E AA
6.
23
Testpoint Overview TV & Scaler Board (Top Side)
Personal Notes:
SERVICE TESTPOINT
F452
500mV / div DC 20us / div
3139 123 5804.2
E_14490_022.eps 030604
E_06532_012.eps 130204
Block Diagrams, Testpoint Overviews, and Waveforms
LC4.2E AA
6.
24
I2C IC Overview
I2C BUS INTERCONNECTION DIAGRAM
A2 HERCULES
+3V3STBY +3V3STBY
ERR 6
A1 TUNER IF
A3 HISTOGRAM
A7 SCALER
A11 FLASH/CONTROL
3096 7011 109 SET PROCESSOR 108 PART OF VIDEOPROCESSER (HERCULES)
3088
F303
SDA SCL
F302
+3V3STBY +3V3STBY
3433 3303 3302
3432
+3.3V
5
6
5
4
1303 1 2 For COMPAIR only
14
11
N1
N2 SDA_IO SCL_IO
3097 104 NVM_WP 7
7099 M24C16 EEPROM (NVM)
1302 TUNER
7560 TDA9178T HISTOGRAM
7401 GM1501 SCALER
SCALER INTERFACE
A9
1409 1 3
PP4
1001 1 3
PP3
PIXEL +
SDAO SCLO T2 R2
3
ERR 15 ERR 14
ERR 6
ERR 9
ERR 10
5
6
7101 EP1C12F
ERR 16
NVM_WPP
7531 M24C32 EEPROM
ERR 8
H2
VGA CONNECTOR
15 5
PCHD-IO
A13
PCHD_MUX
1687 9
3702
6693
5686
DDC_5V
ADDRESS 7530 M29W040B FLASH ROM 512kx8
ERR 4
3697 12 15
11 1
3696
SDA_VGA SCL_VGA
3707 3706 RESERVED
UART_RX UART_TX
1698 23
1601 23
UART_RX UART_TX
DATA
22
24
5
6
7693 M24C02 EEPROM 256x8
A10 SDRAM
DVI-D CONNECTOR
1680 14 3691
ADDRESS
17 24 9 16 1 8 C5
DVI_5V
7501 K4D263238M SDRAM IMx32x4
6691
5692
DDC_5V
DATA
ERR 14
3705 7 6
SDA_DVI SCL_DVI
3704
SDA_DVI SCL_DVI
25 26
21 20
SDA_DVI SCL_DVI
5
6
7694 M24C02 EEPROM 256x8
E_14490_106.eps 040804
Block Diagrams, Testpoint Overviews, and Waveforms
LC4.2E AA
6.
25
Supply Voltage Overview
SUPPLY PANEL
1200
A6
1910 1 2
TV SUPPLY
A1
F903 A6
TUNER IF
A6
A9
+3V3STBY +5VSWI +3V3_PLL +3V3_ADC +3V3_DVI +3V3_IO +3V3_LBADC +3V3_LVDSA +3V3_LVDSB +3V3_LVDS +1V8_ADC +2V5_DDR +1V8_CORE +1V8_DVI
A14 A14 A14 A14
SCALER INTERFACE
+3V3STBY +5VSWI +3V3_PLL +3V3_ADC +3V3_DVI +3V3_IO +3V3_LBADC +3V3_LVDSA +3V3_LVDSB +3V3_LVDS +1V8_ADC +2V5_DDR +1V8_CORE +1V8_DVI FSVREF
1409 7 9
PP4 PIXEL+ PANEL
1001 7 9 7505 1 7504 7501 3 +1V5 +3V3
+5VSW +5VSW +VTUN +VTUN +3V3STBY +3V3STBY (FOR ITV ONLY)
AUD_SUP
F905
AUD_SUP
A5
A6 A6
3 4 1001 5 6 7
5909
+3V3STBY
+3V3STBY
A13 A12 A11 A9 A7 A5 A3 A2 A1 A14 A14
A2
A6
HERCULES
+3V3STBY
+5
A14 A14
+3V3STBY
F906
7001
A14
PP1
EPLD CONT.
5107 5104 5105 +3V3_IO +1V5_PLL +1V5_INT
+1V8_A
A14
8 9 10 11 12 POWER_DOWN STANDBY
+12VUNREG
+12VUNREG
A5 A2
7011
14
A14
CONTROL
A14 A14
HERCULES
127
BU_LIGHT_ADJ1 A7 LAMP_ON_OFF
7003
PP3
EPLD I/O
+3V3_IO +5 3V3
+1V8_B
A14 A14
A7
F915 A3 A2 A1 A6
7930 MC34063AD
CONTROL +8VSW_TV +8VSW_TV TO 45 - 7011
A6
1520 TO LCD DISPLAY
+12VSW
5930 6 SUPPLY 2 6930
IC
5931 5910
3910
5932
+5VSW
F912
PP2
LVDS IN
1 2
VLCD 3V3 VLCD 1003
3374
+VTUN
A1
6910
A10 SDRAM
A14
+5VSW
1 2
+5VSW
7920 L78M0