Text preview for : es1e_aa_312278515041_en.pdf part of philips 28PT7120/12 SERVICE MANUAL
Back to : es1e_aa_312278515041_en.p | Home
Colour Television
Chassis
ES1E
AA
F_15040_000.eps 040405
Contents
Page
Contents
Page
53-62 53-62 53-62 53-62 53-62 53-62 53-62 64 66 68 70 72 74 76 78 80
1. Technical Specifications, Connections, and Chassis Overview 2 2. Safety Instructions, Warnings, and Notes 4 3. Directions for Use 7 4. Mechanical Instructions 8 5. Service Modes, Error Codes, and Fault Finding 10 6. Block Diagrams, Testpoint Overviews, and Waveforms Wiring Diagram 15 Block Diagram LSP Supply and Deflection 16 Testpoint Overview LSP 17 Block Diagram 1 Audio & Video 18 Block Diagram 2 Audio & Video 19 Block Diagram 3 Audio & Video 20 Testpoint Overview SSB 21 I2C Overview 22 Supply Lines Overview 23 7. Circuit Diagrams and PWB Layouts Diagram LSP: Power Supply (A1)24 LSP: Deflection (A2)25 LSP: Class D Audio Amplifier (Res) (A3)26 LSP: Audio Amplifier (A4)27 LSP: Tuner IF (A5)28 LSP: Interfacing (A6)29 LSP: SCART I/O (A7)30 SSB: If & SAW Filter (B1)37 SSB: Video Source Selection & Data Link (B2)38 SSB: Audio Source Select (B3)39 SSB: MPIF-Supply, E/W, & Control (B4)40 SSB: Video Decoder (B5)41 SSB: Feature Box (B6)42 SSB: RGB Processing (B7)43 SSB: Sync & Deflection Processing (B8)44 SSB: Protection (B9)45
PWB 31-36 31-36 31-36 31-36 31-36 31-36 31-36 53-62 53-62 53-62 53-62 53-62 53-62 53-62 53-62 53-62
8. 9.
10. 11.
SSB: Audio Processing (B10)46 SSB: Control (B11)47 SSB: Control-Memory Interface (EBIU) (B12)48 SSB: Control-Memory Interface (SDRAM) (B13)49 SSB: ADOC Supply (B14)50 SSB: Low Voltage Supply ADOC (B15)51 SSB: Connector Interface (B18)52 Side I/O Panel (FL9) (D)63 Side I/O Panel (SL5/PV2) (D)65 Front Control Panel (E)67 Top Control Panel (PV2) (E)69 Top Control Panel (FL9) (E)71 CRT Panel (F)73 Mains Switch Panel (FL9) (M)75 Mains Switch Panel (SL5) (M)77 Front Interface Panel (PV2) (Q1)79 Alignments 81 Circuit Descriptions, Abbreviation List, and IC Data Sheets 88 Abbreviation List 93 IC Data Sheets 96 Spare Parts List 97 Revision List 103
© Copyright 2005 Philips Consumer Electronics B.V. Eindhoven, The Netherlands. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise without the prior permission of Philips.
Published by WS 0571 TV Service
Printed in the Netherlands
Subject to modification
EN 3122 785 15041
EN 2
1.
ES1E
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 Note: Data below can deviate slightly from the actual situation, due to the different set executions.
1.2
Connection Overview
Note: The following connector colour abbreviations are used (acc. to DIN/IEC 757): Bk= Black, Bu= Blue, Gn= Green, Gy= Grey, Rd= Red, Wh= White, and Ye= Yellow.
1.2.1
Front / Side Connections
1.1
1.1.1
Technical Specifications
Vision Display type Screen size : : : : : : : : : : : : : : : : CRT, DV, RF 28" (70 cm), 4:3 28" (70 cm), 16:9 29" (72 cm), 4:3 32" (82 cm), 16:9 PLL PAL B/G, D/K, I SECAM B/G, D/K, L/L' NTSC M/N 3.58, 4.43 PAL B/G SECAM L/L' 100/125 presets VHF UHF S-band Hyper-band
FRONT CONTROL
TOP CONTROL
P+
SIDE I/O
S-Video Video
V-
V+
L Audio R
IR RED
P-
Tuning system TV Colour systems Video playback
CL 06532130_002.eps 031000
Figure 1-1 Front and top control, side I/O connections Cinch: Video CVBS - In, Audio - In Ye - Video CVBS 1 VPP / 75 ohm Wh - Audio L 0.5 VRMS / 10 kohm Rd - Audio R 0.5 VRMS / 10 kohm SVHS (Hosiden): Video Y/C - In 1 - Ground Y Gnd 2 - Ground C Gnd 3 - Video Y 1 VPP / 75 ohm 4 - Video C 0.3 VPPP / 75 ohm Mini Jack: Audio Headphone - Out Bk - Head phone 32 - 600 ohm / 10 mW 1.2.2 Rear Connections
Presets/channels Tuner bands
jq jq jq
1.1.2
Sound Sound systems : : : : : : FM-mono AM-mono FM-stereo B/G NICAM B/G, D/K, I, L AV Stereo 2 x 10
H H j j
ot
Maximum power (WRMS) 1.1.3 Miscellaneous Power supply: - Mains voltage (VAC) - Mains frequency (Hz) Ambient conditions: - Temperature range (°C) - Maximum humidity Power consumption - Normal operation (W) - Stand-by (W) Dimensions (WxHxD cm) Weight (kg)
: 230 : 50 / 60
75 Ohm
AUDIO OUT
: -5 to +40 : 95% R.H.
L R
EXTERNAL 2
: 160 : <1 : ?x?x?
SERVICE CONNECTOR
EXTERNAL 1
F_15040_052.eps 040405
Figure 1-2 Rear connections
: ? Aerial - In - - IEC-type (EU) Coax, 75 ohm D
Cinch: Video CVBS - Out, Audio - Out Ye - Video CVBS 1 VPP / 75 ohm Wh - Audio L 0.5 VRMS /10 kohm Rd - Audio R 0.5 VRMS / 10 kohm Service Connector (ComPair) 1 - SDA-S I2C Data (0 - 5 V) 2 - SCL-S I2C Clock (0 - 5 V) 3 - Ground Gnd
kq kq kq
jk j H
Technical Specifications, Connections, and Chassis Overview
EXT1: Video RGB - In, CVBS - In/Out, Audio - In/Out
ES1E
1.
EN 3
EXT2: Video YC - In, CVBS - In/Out, Audio - In/Out
20
2
20
2
21
E_06532_001.eps 050404
1
21
E_06532_001.eps 050404
1
Figure 1-3 SCART connector 1 2 3 4 5 6 7 8 - Audio R - Audio R - Audio L - Ground Audio - Ground Blue - Audio L - Video Blue/U - 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 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 k j k H H j j j H j H H j j H H k j H 1 2 3 4 5 6 7 8
Figure 1-4 SCART connector - Audio R - Audio R - Audio L - Ground Audio - Ground Blue - Audio L - C-FRONT - 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 0 - 5 V / 4.7 kohm k j k H H j j j H jk H H j H H k j H
9 10 11 12 13 14 15 16 17 18 19 20 21
- Ground Green - n.c. - Video Green/Y - n.c. - Ground Red - Ground FBL - Video Red/V - Status/FBL - Ground Video - Ground Video - Video CVBS - Video CVBS - Shield
9 10 11 12 13 14 15 16 17 18 19 20 21
- Ground Green - Easylink P50 - n.c. - n.c. - Ground Red - Ground Data -C - n.c. - Ground Video - Ground FBL - Video CVBS - Video CVBS/Y - Shield
Gnd Gnd 0.7 VPP / 75 ohm Gnd Gnd 1 VPP / 75 ohm 1 VPP / 75 ohm Gnd
1.3
Chassis Overview
F
CRT/SCAVEM PANEL
TOP CONTROL PANEL
E
D
SIDE I/O PANEL
LARGE SIGNAL PANEL
A
B
SMALL SIGNAL BOARD
FRONT INTERFACE PANEL (PV2) MAINS SWITCH PANEL (FL9 & SL5)
Q M
F_15040_053.eps 290405
Figure 1-5 PWB location
EN 4
2.
ES1E
Safety Instructions, Warnings, and Notes
2. Safety Instructions, Warnings, and Notes
Index of this chapter: 2.1 Safety Instructions 2.2 Maintenance Instructions 2.3 Warnings 2.4 Notes 2. Clean the power supply and deflection circuitry on the chassis. 3. Clean the picture tube panel and the neck of the picture tube.
2.3 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. · Wear safety goggles when you replace the CRT. Safety regulations require that after a repair, the set must be returned in its original condition. Pay in particular attention to the following points: · General repair instruction: as a strict precaution, we advise you to re-solder the solder connections through which the horizontal deflection current flows. In particular this is valid for the: 1. Pins of the line output transformer (LOT). 2. Fly-back capacitor(s). 3. S-correction capacitor(s). 4. Line output transistor. 5. Pins of the connector with wires to the deflection coil. 6. Other components through which the deflection current flows. Note: This re-soldering is advised to prevent bad connections due to metal fatigue in solder connections, and is therefore only necessary for television sets more than two years old. · Route the wire trees and EHT cable correctly and secure them with the mounted cable clamps. · Check the insulation of the Mains (AC Power) lead for external damage. · Check the strain relief of the mains (AC Power) cord for proper function, to prevent the cord from touching the CRT, hot components, or heat sinks. · Check the electrical DC resistance between the Mains (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.
Warnings
· In order to prevent damage to ICs and transistors, avoid all high voltage flashovers. In order to prevent damage to the picture tube, use the method shown in figure "Discharge picture tube", to discharge the picture tube. Use a high voltage probe and a multi-meter (position VDC). Discharge until the meter reading is 0 V (after approx. 30 s).
V
E_06532_007.eps 250304
Figure 2-1 Discharge picture tube · All ICs and many other semiconductors are susceptible to electrostatic discharges (ESD w). Careless handling during repair can reduce life drastically. Make sure that, during repair, you are connected with the same potential as the mass of the set by a wristband with resistance. Keep components and tools also at this 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 prevents circuits from becoming unstable.
· · ·
2.4
2.4.1
Notes
General · Measure the voltages and waveforms with regard to the chassis (= tuner) ground (H), or hot ground (I), depending on the tested area of circuitry. The voltages and waveforms shown in the diagrams are indicative. Measure them in the Service Default Mode (see chapter 5) with a colour bar signal and stereo sound (L: 3 kHz, R: 1 kHz unless stated otherwise) and picture carrier at 475.25 MHz for PAL, or 61.25 MHz for NTSC (channel 3). Where necessary, measure the waveforms and voltages with (D) and without (E) aerial signal. Measure the voltages in the power supply section both in normal operation (G) and in stand-by (F). These values are indicated by means of the appropriate symbols. The semiconductors indicated in the circuit diagram and in the parts lists, are interchangeable per position with the semiconductors in the unit, irrespective of the type indication on these semiconductors.
2.2
Maintenance Instructions
We recommend a maintenance inspection carried out by qualified service personnel. The interval depends on the usage conditions: · When a customer uses the set under normal circumstances, for example in a living room, the recommended interval is three to five years. · When a customer uses the set in an environment with higher dust, grease, or moisture levels, for example in a kitchen, the recommended interval is one year. · The maintenance inspection includes the following actions: 1. Perform the "general repair instruction" noted above.
·
·
Safety Instructions, Warnings, and Notes
· Manufactured under license from Dolby Laboratories. "Dolby", "Pro Logic" and the "double-D symbol", are trademarks of Dolby Laboratories. 2.4.4 Lead-free Solder
ES1E
2.
EN 5
Philips CE is producing lead-free sets (PBF) from 1.1.2005 onwards. Identification: The bottom line of a type plate gives a 14-digit serial number. Digits 5 and 6 refer to the production year, digits 7 and 8 refer to production week (in example below it is 1991 week 18).
2.4.2
Schematic Notes · All resistor values are in ohms, and the value multiplier is often used to indicate the decimal point location (e.g. 2K2 indicates 2.2 kohm). Resistor values with no multiplier may be indicated with either an "E" or an "R" (e.g. 220E or 220R indicates 220 ohm). All capacitor values are given in micro-farads (µ= x10-6), nano-farads (n= x10-9), or pico-farads (p= x10-12). Capacitor values may also use the value multiplier as the decimal point indication (e.g. 2p2 indicates 2.2 pF). An "asterisk" (*) indicates component usage varies. Refer to the diversity tables for the correct values. The correct component values are listed in the Spare Parts List. Therefore, always check this list when there is any doubt.
·
· · · ·
E_06532_024.eps 230205
Figure 2-2 Serial number example 2.4.3 Rework on BGA (Ball Grid Array) ICs General Although (LF)BGA assembly yields are very high, there may still be a requirement for component rework. By rework, we mean the process of removing the component from the PWB and replacing it with a new component. If an (LF)BGA is removed from a PWB, the solder balls of the component are deformed drastically so the removed (LF)BGA has to be discarded. Device Removal As is the case with any component that is being removed, it is essential when removing an (LF)BGA, that the board, tracks, solder lands, or surrounding components are not damaged. To remove an (LF)BGA, the board must be uniformly heated to a temperature close to the reflow soldering temperature. A uniform temperature reduces the risk of warping the PWB. To do this, we recommend that the board is heated until it is certain that all the joints are molten. Then carefully pull the component off the board with a vacuum nozzle. For the appropriate temperature profiles, see the IC data sheet. Area Preparation When the component has been removed, the vacant IC area must be cleaned before replacing the (LF)BGA. Removing an IC often leaves varying amounts of solder on the mounting lands. This excessive solder can be removed with either a solder sucker or solder wick. The remaining flux can be removed with a brush and cleaning agent. After the board is properly cleaned and inspected, apply flux on the solder lands and on the connection balls of the (LF)BGA. Note: Do not apply solder paste, as this has been shown to result in problems during re-soldering. Device Replacement The last step in the repair process is to solder the new component on the board. Ideally, the (LF)BGA should be aligned under a microscope or magnifying glass. If this is not possible, try to align the (LF)BGA with any board markers. So as not to damage neighbouring components, it may be necessary to reduce some temperatures and times. More Information For more information on how to handle BGA devices, visit this URL: www.atyourservice.ce.philips.com (needs subscription, not available for all regions). After login, select "Magazine", then go to "Repair Downloads". Here you will find Information on how to deal with BGA-ICs. Regardless of the special lead-free logo (which is not always indicated), one must treat all sets from this date onwards according to the rules as described below.
P
b
Figure 2-3 Lead-free logo Due to lead-free technology some rules have to be respected by the workshop during a repair: · Use only lead-free soldering tin Philips SAC305 with order code 0622 149 00106. If lead-free solder paste is required, please contact the manufacturer of your soldering equipment. In general, use of solder paste within workshops should be avoided because paste is not easy to store and to handle. · Use only adequate solder tools applicable for lead-free soldering tin. The solder tool must be able: To reach a solder-tip temperature of at least 400°C. To stabilise the adjusted temperature at the solder-tip. To exchange solder-tips for different applications. · Adjust your solder tool so that a temperature of around 360°C - 380°C is reached and stabilised at the solder joint. Heating time of the solder-joint should not exceed ~ 4 sec. Avoid temperatures above 400°C, otherwise wear-out of tips will increase drastically and flux-fluid will be destroyed. 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 clean the solder-joint from old tin and re-solder with new tin. · Use only original spare-parts listed in the Service-Manuals. Not listed standard material (commodities) has to be purchased at external companies. · Special information for lead-free BGA ICs: these ICs will be delivered in so-called "dry-packaging" to protect the IC against moisture. This packaging may only be opened shortly before it is used (soldered). Otherwise the body of the IC gets "wet" inside and during the heating time the structure of the IC will be destroyed due to high (steam-) pressure inside the body. If the packaging was opened before usage, the IC has to be heated up for some hours (around 90°C) for drying (think of ESD-protection!). Do not re-use BGAs at all!
EN 6
·
2.
ES1E
Safety Instructions, Warnings, and Notes
For sets produced before 1.1.2005, containing leaded soldering tin and components, all needed spare parts will be available till the end of the service period. For the repair of such sets nothing changes.
In case of doubt whether the board is lead-free or not (or with mixed technologies), you can use the following method: · Always use the highest temperature to solder, when using SAC305 (see also instructions below). · De-solder thoroughly (clean solder joints to avoid the mixing of two alloys). Caution: For BGA-ICs, you must use the correct temperatureprofile, 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. 2.4.5 Practical Service Precautions · It makes sense to avoid exposure to electrical shock. While some sources are expected to have a possible dangerous impact, others of quite high potential are of limited current and are sometimes held in less regard. Always respect voltages. While some may not be dangerous in themselves, they can cause unexpected reactions that are best avoided. Before reaching into a powered TV set, it is best to test the high voltage insulation. It is easy to do, and is a good service precaution.
·
Directions for Use
ES1E
3.
EN 7
3. Directions for Use
You can download this information from the following websites: http://www.philips.com/support http://www.p4c.philips.com
EN 8
4.
ES1E
Mechanical Instructions
4. Mechanical Instructions
Index of this chapter: 4.1 Service Connector (for ComPair) 4.2 Set Disassembly 4.3 Service Positions 4.4 Assy / Board Removal 4.5 Set Re-assembly Note: Figures below can deviate slightly from the actual situation, due to the different set executions. Solder Side LSP To get access to the bottom side (solder side) of the LSP, do the following (see figure 4-1): 1. Remove the connector of the mains cable (coming from the mains switch-module) from the LSP. 2. Remove the cable (connector) from the side I/O panel. 3. Release some wiring from their fixation clamps, in order to get room for repositioning the LSP. 4. Flip the LSP 90 degrees clockwise [2], and place it in the fixation hole at the left side of the bottom tray [3]. 5. Push the LSP forward to fix it. (Alternatively, the LSP may also be placed on your work bench without being positioned in its fixation hole, or it may even be removed from the bracket for better accessibility, see "Assy / Board Removal: Large Signal Panel (LSP)" on the next pages.)
2
4.1
Service Connector (for ComPair)
For service diagnostics with ComPair, it is not necessary to disassemble the set. You only have to connect the ComPair interface box, via the appropriate cable, to the service connector (on the rear of the set, see figure 1-2), and start the program (see also chapter 5 "Service Modes, Error Codes, and Fault Finding ").
1
4.2
Set Disassembly
Follow the disassemble instructions in described order.
4.2.1
Rear Cover Removal
4
Warning: disconnect the mains power cord before you remove the rear cover. 1. Remove all the fixation screws of the rear cover. 2. Now the rear cover can be removed.
4.3
Service Positions
This chassis has several predefined service positions, for better accessibility. They are explained below in more detail. 4.3.2
3
CL 36532058_078.eps 081003
Figure 4-2 Service position 2 Small Signal Board (SSB) In fact, there is no predefined service position for the SSB. Most test points are located on the A-side (side that is facing the tuner). If you have to replace ICs, you must take the complete SSB module out of the SIMM-connector. Notes: · For better access to the SSB, it is possible to order an "extension tool" with cables. You can use this service extension tool to connect a Small Signal Board (SSB) of an ES1E, A02, A10, or EMG (EMx) chassis, via two "IDE" cables to the SIMM connector in the set. In this way, you can service the SSB more easily outside the TV set. You can order this tool under 12nc: 9965 000 14526. · If necessary for the measurement, you can put the LSP in "service position 2" (as described above).
4.3.1
Large Signal Panel (LSP) Component Side LSP For better accessibility of the LSP, do the following (see Figure "Service position 1"): 1. Simultanuously do the following: a) pull the two plastic locking handles at the mid left and mid right side of the bracket gently backwards to unlock the bracket, and b) loosen the bracket from the bottom tray, by pulling it backwards. N.B.: You do not need to pull the other two locking handles backwards. 2. Remove the LSP-bracket from the bottom tray by lifting it upwards. 3. Hook the bracket in the first row of fixation holes of the bottom tray. In other words, reposition the bracket from [1] to [2].
4.4
Assy / Board Removal
Sometimes, it can be necessary to swap a complete assy or Printed Wiring Board (PWB). How that can be done is explained below.
1 2 1 2
Bottom tray
CL 36532058_079.eps 081003
Figure 4-1 Service position 1
Mechanical Instructions
4.4.1 Top Control Assy/Panel
ES1E
4.
EN 9
M
Top control board
1. Release the two fixation clamps (1) by pushing them upward. 2. At the same time, the complete assy must be pulled backward (2). 3. If the board has to be removed, release the two clamps at the sides of the bracket and lift the panel out (3). 4.4.5 Small Signal Board (SSB)
CL 06532012_003.eps 030200
1
Figure 4-3 Top control panel 1. Remove the two fixation screws that hold the panel. 2. Pull the board backwards (i.e., release it from the front hinge). 3. The board can be lifted out of the bracket after releasing the two fixation clamps at the connector side. 4.4.2 Side I/O Assy and Panel
1 3
3
2 2
CL 06532153_002.eps 211103
Figure 4-6 SSB removal 1. Push the top of the SSB towards the LOT [1]. 2. Due to the pressure, the two metal clamps at both sides of the SIMM-connector will release [2]. 3. Take the complete SSB out [3]. 4.4.6 Large Signal Panel (LSP) 1. Remove the SSB (see paragraph "Small Signal Board (SSB)" above). 2. Remove the two fixation screws from the large plastic bracket on the right hand side of the LSP (above the EHT shield), and remove the bracket, after releasing the EHT cable and the CRT cables from the fixation clamps on this bracket. 3. Disconnect the other cables (loudspeaker, mains, etc.) from the LSP, and release some cables from their fixation clamps. 4. Press the fixation clamp on the left front side of the LSPbracket (close to the white arrow/loudspeaker connector) to unlock the LSP, and tilt it upwards (the board hinges at the right side). 5. Remove the board from the bracket by unhooking it from its fixation clamps on the right side.
CL 06532012_004.eps 030200
Figure 4-4 Side-I/O panel 1. The complete side I/O-assembly can be removed by unscrewing the two fixation screws. 2. The board can be lifted out of the bracket after releasing the two fixation clamps.
4.4.3 4.4.4
Mains Switch Assy/Panel Accessing the Mains Switch/LED panel
4.5
Set Re-assembly
To re-assemble the whole set, do all processes in reverse order. Be sure that, before the rear cover is mounted: · The mains cord is postioned correctly in its guiding brackets (make sure that the strain relief will function correctly!). · All wires/cables are returned in their original positions. This is very important, in view of the "hot" and "EHT" areas of the set.
1 1
2
3 3
CL 06532012_005.eps 030200
Figure 4-5 Mains Switch/LED panel
EN 10
5.
ES1E
Service Modes, Error Codes, and Fault Finding
5. Service Modes, Error Codes, and Fault Finding
Index of this chapter: 5.1 Test Points 5.2 Service Modes 5.3 Problems and Solving Tips (related to CSM) 5.4 ComPair 5.5 Error Codes 5.6 The Blinking LED Procedure 5.7 Software Downloading Note: It is possible that, together with the SDM, the main menu will appear. To switch it "off", push the "MENU" button again. Short circuit, during switch "on" of the set, the two solder pads on the SSB with the indication "FOR SERVICE". These solder pads are located at the "tuner" side of the SSB (just above the large BGA IC). Caution: If the SDM is activated via these pins, all the software-controlled protections are de-activated for 15 s. When these 15 s are expired, the set will shutdown to protection mode. Use the DST-emulation feature of ComPair.
·
5.1
Test Points
See chapter 6 " Block Diagrams, Testpoint Overview, and Waveforms". Perform measurements under the following conditions: · Service Default Mode. · Video: colour bar signal. · Audio: 3 kHz left, 1 kHz right.
·
5.2
Service Modes
Service Default Mode (SDM) and Service Alignment Mode (SAM) offer several features for the service technician, while the Customer Service Mode (CSM) is used for communication between a Philips Customer Care Centre (P3C) and a customer. There is also the option of using ComPair, a hardware interface between a computer (see requirements below) and the TV chassis. It offers the ability of structured troubleshooting, test pattern generation, error code reading, software version readout, and software upgrading. Minimum requirements: a Pentium processor, Windows 95/ 98, and a CD-ROM drive (see also paragraph "ComPair").
After activating this mode: · "SDM" will appear in the upper right corner of the screen. · Also, the error buffer, operating hours, and software version are displayed (can be toggled "on/off" with the "STATUS / OSD / [i+]" button). · Blinking LED procedure will be started. · All software-controlled protections are overridden for 15 s. When these 15 s are expired, the set will shutdown to protection mode. Contents of SDM: · HRS. Displays the accumulated total of operation hours (not the standby hours) in hexadecimal value. · SW. Displays the date of the software and the software version of the ROM; example: A2EU04-5.10 = AAABBC-X.YY. AAA= chassis name. BB= region and/or function name: E= Europe, A= Asia Pacific, U= NAFTA, L= LATAM, B= Basic, T= Top, P= PAL, N= NTSC, S= Stereo, M= Mono. C= the language cluster number. X.Y= the software version, where X is the main version number (different numbers are not compatible with one another) and Y is the sub version number (a higher number is always compatible with a lower number). · ERR (followed by maximal 8 errors). The most recent error is displayed at the upper left (for an error explanation see paragraph "Error Codes"). How to Navigate · When you press the "MENU" button on the RC transmitter, the set will toggle between the SDM and the normal user menu (with the SDM mode still active in the background). · When you press the "STATUS / OSD / [i+]" button on the RC transmitter, the set will toggle between the full SDM screen or a screen with only the text "SDM" displayed on it. This mode is useful when performing measurements, then the OSD info will not generate interference. How to Exit SDM Use one of the following methods: · Switch the set to STANDBY via a standard customer RCtransmitter (the error buffer is erased). · Via a standard customer RC-transmitter: key in "00"sequence (the error buffer is not erased). 5.2.2 Service Alignment Mode (SAM) Purpose · To perform alignments. · To change option settings. · To easily identify the used software version. · To view operation hours. · To display / clear the error code buffer. Specifications · Operating hours counter. · Software version.
5.2.1
Service Default Mode (SDM) Purpose · To create a pre-defined setting for measurement purposes. · To override SW protections (only when SDM is activated via shorting the SDM pins on the SSB). · To start the blinking LED procedure. · Inspection of error buffer, life timer, and software version. Specifications · Tuning frequency: 475.25 MHz for PAL/SECAM. · Colour system: SECAM L for France or PAL B/G for the rest of Europe. · All picture settings at 50 % (brightness, colour, contrast). · All sound settings at 50 %, except volume at 25 %. · All service-unfriendly modes (if present) are disabled, like: (Sleep) timer. Child/parental lock. Blue mute. Automatic volume limiter (AVL). Auto switch-off (when no video signal was received for 10 minutes). Skip/blank of non-favourite pre-sets. Hotel or hospital mode. Local keyboard block. Smart modes. Auto store of personal presets. Auto user menu time-out. How to Activate SDM Use one of the following methods: · Use the standard RC-transmitter and key in the code "062596", directly followed by the "MENU" button.
Service Modes, Error Codes, and Fault Finding
· · · · Option settings. Error buffer reading and erasing. Software alignments. Disable service unfriendly modes.
ES1E
5.
EN 11
How to Activate SAM Use one of the following methods: · Via a standard RC transmitter: key in the code "062596" directly followed by the "STATUS / OSD / [i+]" button. · Use the DST-emulation feature of ComPair. After activating this mode, "SAM" will appear in the upper right corner of the screen. Contents of SAM: · HRS. Displays the accumulated total of operation hours (not the standby hours) in hexadecimal value Note: every time the set is switched "on" by the mains switch or the RC, the timer is increased by 0.5. · SW ID. Displays the software version of the ROM example: A2EU04-5.10 = AAABBC-X.YY. AAA= chassis name. BB= region and/or function name: E= Europe, A= Asia Pacific, U= NAFTA, L= LATAM, B= Basic, T= Top, P= PAL, N= NTSC, S= Stereo, M= Mono. C= the language cluster number. X.Y= the software version, where X is the main version number (different numbers are not compatible with one another) and Y is the sub version number (a higher number is always compatible with a lower number). · ERR (followed by maximal 8 errors). The most recent error is displayed at the upper left (for an error explanation see paragraph "Error Codes"). · OPTIONS. Extra features for Service. · CLEAR ERRORS. When you press the "OK" button, the error buffer is reset. · AKB. Disable (off) or enable (on) the "black current loop" (AKB= Auto Kine Bias). For Vg2 alignment. · TUNER. This will activate the "TUNER" alignments submenu. · WHITE TONE. This will activate the "WHITE TONE" alignments sub-menu. · GEOMETRY. This will activate the "GEOMETRY" alignments sub-menu. · SOUND. This will activate the "SOUND" alignments submenu. · SMART SETTINGS. This will activate the "SMART SETTINGS" alignments sub-menu. · STORE. This will save the new settings/alignments. · EEPROM TEST. This will report if the SW checksum is OK. Convenient after SW upgrading. · VID RAM TEST. This will check the continuity of the address bus and data bus of the Video RAM. · VG2. This feature is not implemented yet. Do not use. Note: Alignments are described in chapter 8 "Alignments". How to Navigate · In SAM, you can select the menu items with the "CURSOR UP/DOWN" key on the RC-transmitter. The selected item will be highlighted. When not all menu items fit on the screen, move the "CURSOR UP/DOWN" key to display the next/previous menu items. · With the "CURSOR LEFT/RIGHT" keys, it is possible to: (De) activate the selected menu item. Change the value of the selected menu item. Activate the selected submenu. · When you press the "MENU" button on the RC transmitter, the set will toggle between the SAM and the normal user menu (with the SAM mode still active in the background).
How to Exit SAM Use one of the following methods: · Switch the set to STANDBY via the RC-transmitter (the error buffer is erased). · Via a standard customer RC-transmitter: key in "00"sequence (the error buffer is not erased). 5.2.3 Customer Service Mode (CSM) Purpose When a customer is having problems with his TV-set, he can call his dealer or the Philips helpdesk (P3C). The service technician can than ask the customer to activate the CSM, in order to identify the status of the set. Now, the service technician can judge the severity of the complaint. In many cases, he can advise the customer how to solve the problem, or he can decide if it is necessary to visit the customer. The CSM is a read only mode; therefore, modifications in this mode are not possible. How to Activate CSM Use one of the following methods: · Press the "MUTE" button on the RC-transmitter simultaneously with any key on the TV for at least 4 seconds. · Key in the code "123654" via the standard RC transmitter. Notes: · Activation of the CSM is only possible if there is no (user) menu on the screen! · During CSM, sound volume is set to 25% of the scale, "Smart Sound" is set to "Theatre" mode, and "Smart Picture" is set to "Rich/Movies" mode temporarily to ensure a good picture and sound of the working set. After leaving CSM, the original settings are restored. How to Navigate By means of the "CURSOR-DOWN/UP" knob on the RCtransmitter, you can navigate through the menus. Contents of CSM The following information is displayed on screen: · Text "CSM" on the first line. · Line number for every line (to make CSM language independent). · Option code information. · Configuration information. · Service-unfriendly modes. 1. SET TYPE. Type/model number (if present) according to the Philips standard (example: 28PW8720/12). 2. SOFTWARE. Software version AAABBC-X.YY. 3. HOURS ON. Operating hours (in hexadecimal code). 4. CODE1. Shows the contents of the error buffer (the word "error" may not be used on this screen, instead "code1" and "code2" is used). 5. CODE2. Idem. 6. OPTION1. Option code information. 7. OPTION2. Idem. 8. OPTION3. Idem. 9. OPTION4. Idem. 10. SIGNAL. "Ident" signal present or not present (VID status bit in MPIF) on selected source. 11. TIMER. Timer is activated (in "FEATURE" menu) or deactivated. 12. CHANNEL. Child Lock (if present) is activated or deactivated (i.e. when local keyboard is locked). 13. PRESET. (If present). Current channel is defined as skipped or non-preferred. 14. HOTELMODE. Shows if the HOTEL mode is activated or deactivated (only for Europe and AP). 15. SOURCE. Selected source before entry of CSM; XXX (channel no.), external source name (i.e. AV1, CVI, EXT1, etc...).
EN 12
5.
ES1E
Service Modes, Error Codes, and Fault Finding
Black and White Picture Check in CSM line COLOR. In case the value is low (< 10), increase the "Color" value. The new value is automatically stored for all TV channels. No Colours/colour Lines around Picture Elements or Colours not Correct or Unstable Picture 1. Check in CSM line SYSTEM. If a "strange" system pops up, something has gone wrong during installation. Re-install the channel. 2. In case line SYSTEM is "FRANCE", the installed system for this pre-set is SECAM, while PAL is required. Install the required program again: open the installation menu and perform manual installation. Select system "West Europe". Menu Text not Sharp Enough 1. Press "SMART PICTURE". In case picture improves, decrease the "Contrast" value. The new value(s) are automatically stored for all TV channels. 2. Check in CSM line CONTRAST. If the value of this line is high (> 50), decrease the "Contrast" value. 5.3.2 Sound Problems No Sound from Left and Right Speaker Check in CSM line VOLUME. If the value is high, increase the value of "Volume". The new value(s) are automatically stored (in "personal" pre-set) for all TV channels. Sound too Loud for Left and Right Speaker Check in CSM line VOLUME. If the value is low, decrease the value of "Volume". The new value(s) are automatically stored (in "personal" pre-set) for all TV channels.
16. SOUND. Selected SOUND mode; "XX"= MONO, NICAM, STEREO, L1 (Language 1), L2 (Language 2), SAP, VIRTUAL, or DIGITAL prior entry to CSM. 17. VOLUME. Volume level before entry of CSM (typ. 00..100). 18. BALANCE. Balance level before entry of CSM (typ. 50..50). 19. BRIGHTNESS. Brightness level before entry of CSM (typ. 00..100). 20. COLOUR. Colour level before entry of CSM (typ. 00..100). 21. CONTRAST. Contrast level before entry of CSM (typ. 00..100). 22. HUE (if present). Hue level before entry of CSM (typ. 50..100). How to exit CSM Use one of the following methods: · After you press a key on the RC-transmitter (with exception of the "CHANNEL", "VOLUME" and digit (0-9) keys), or · After you switch the TV-set "OFF" with the mains switch. · After 15 min. no RC or local keyboard actions.
5.3
Problems and Solving Tips (related to CSM)
Note: The problems described below are all related to the TV settings. The procedures to change the value (or status) of the different settings are described above. New value(s) are automatically stored.
5.3.1
Picture Problems Picture too Dark 1. Press SMART PICTURE on the RC. In case the picture improves, increase the "Brightness" or the "Contrast" value. The new value(s) are automatically stored (in "personal" pre-set) for all TV channels. 2. Check in CSM lines BRIGHTNESS and/or CONTRAST. If the value of line BRIGHTNESS is low (< 10) or the value of line CONTRAST is low (< 10), increase them. Picture too Bright 1. Press SMART PICTURE on the RC. In case the picture improves, decrease the "Brightness" or the "Contrast" value. The new value(s) are automatically stored (in "personal" pre-set) for all TV channels. 2. Check in CSM lines BRIGHTNESS and/or CONTRAST. If the value of line BRIGHTNESS is high (> 50) or the value of line CONTRAST is high (> 50), decrease the "Brightness" or the "Contrast" value. White Line Around Picture Elements and Text 1. Press SMART PICTURE on the RC. In case the picture improves, decrease the "Sharpness" value. The new value is automatically stored (in "personal" pre-set) for all TV channels. 2. Check in CSM line SHARPNESS. Decrease the "Sharpness" value. The new value is automatically stored for all TV channels. 5.4.2 No Picture Check in CSM line 10 (SIGNAL). In case this line shows NO SIGNAL, check the aerial cable/aerial system. Blue Picture No proper signal is received. Check the aerial cable/aerial system. Blue Picture and/or Unstable Picture A scrambled or coded signal is received.
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. For 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: · Automatically (by communicating with the television set): ComPair can automatically read out the contents of the
Service Modes, Error Codes, and Fault Finding
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 and from the micro controller of the television set. In this way, it is possible for ComPair to communicate (read and write) to devices on the I2C busses of the TV-set. · Manually (by asking questions to you): This option is helpful, because automatic diagnosis is only possible if the micro controller of the television is working correctly (also, the diagnostic possibilities of automatic diagnosis are more limited). When you choose manual diagnosis, 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 by showing you examples (e.g. Measure test-point I7 and click on the correct oscillogram you see on the oscilloscope). You can answer by clicking on a link (e.g. a piece of 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. Besides fault finding, ComPair provides some additional features like: · Up- or downloading of pre-sets. · Managing of pre-set lists. · Emulation of the Dealer Service Tool (DST). · 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. · SW upgrading 5.4.3 How To Order ComPair order codes: · Starter kit ComPair32/SearchMan32 software and ComPair interface (excl. transformer): 3122 785 90450. · ComPair interface (excluding transformer): 4822 727 21631. · Starter kit ComPair32 software (registration version): 3122 785 60040. · Starter kit SearchMan32 software: 3122 785 60050. · ComPair32 CD (2003 update): 3122 785 60110. · SearchMan32 CD (2003 update): 3122 785 60120. · ComPair interface cable: 3122 785 90004. · ComPair firmware upgrade IC: 3122 785 90510. · Transformer Europe: 4822 727 21632. · Transformer UK: 4822 727 21633.
ES1E
5.
EN 13
When multiple errors occur (errors occurred within a short time span), there is a high probability that there is some relation between them. 5.5.2 How to Read the Error Buffer Use one of the following methods: · On screen via the SAM (only if you have a picture). Examples: 0 0 0 0: No errors detected 6 0 0 0: Error code 6 is the last and only detected error 9 6 0 0: Error code 6 was first detected and error code 9 is the last detected error · Via the blinking LED procedure (when you have no picture). See next paragraph. · Via ComPair. 5.5.3 How to Clear the Error Buffer Use one of the following methods: · By activation of the "CLEAR ERRORS" command in the SAM menu. · With a normal RC, key in sequence "MUTE" followed by "062599" and "OK". · When you transmit the commands "DIAGNOSE" - "99" "OK" with ComPair (or with a DST). · If the content of the error buffer has not changed for 50+ hours, it resets automatically. 5.5.4 Error Codes The function of error codes is to indicate failures in the TV set. In principle a unique error code is available for every: · I2C device error. · I2C bus error (for every bus containing two or more I2C devices). · Protection error (e.g. +8V protection or Horizontal protection). · Error not related to an I2C device, but of importance (e.g. BC-loop, RAM error).
5.5
5.5.1
Error Codes
Introduction The error code buffer contains all detected errors since the last time the buffer was erased. The buffer is written from left to right, new errors are logged at the left side, and all other errors shift one position to the right. When an error has occurred, the error is added to the list of errors, provided the list is not full or the error is a protection error. When an error occurs and the error buffer is full, then the new error is not added, and the error buffer stays intact (history is maintained), except when the error is a protection error. To prevent that an occasional error stays in the list forever, the error is removed from the list after 50+ operation hours.
EN 14
5.
ES1E
Service Modes, Error Codes, and Fault Finding
operation" mode and in "protection" mode). In order to avoid confusion with RC5 signal reception blinking, this LED blinking procedure is terminated when an RC5 command is received. Transmit the commands "MUTE", "06250x", and "OK" with a normal RC (where "x" is the position in the error buffer that has to be displayed). With x= 1, the last detected error is shown, x= 2 the second last error, etc.... When x= 0, all errors are shown. "DIAGNOSE X" with the DST (where "x" is the position in the error buffer that has to be displayed). With x= 1, the last detected error is shown, x= 2 the second last error, etc.... When x= 0, all errors are shown.
Table 5-1 Error Table Error Description 0 1 3 4 5 7 11 12 13 14 17 18 19 21 22 No error Horizontal Protection (via NOHFB bit in ADOC) +8V error (missing/protection active by checking MPIF ASUP bit)) X-ray/High beam current protection signal (via XPROT bit in ADOC) Highbeam protection Under-voltage protection MPIF I2C communication failure / MPIF test failed BC-loop not stabilised within the time limit (i.e. after timer is expired) NVM I2C communication failure Main tuner 1232 I2C failure UV13xx 3D Y/C 7823 Combfilter I C communication failure PIP Tuner I2C failure 2fH component input I2C failure (PCF8574) PIP IF demodulator IC TDA988x communication failed (only for PIP/DW sets) Flash over protection error (to register CRT flashovers, via FPR status bit in ADOC)
2
·
·
Note: It can take some seconds before the blinking LED starts.
5.7
Software Downloading
In this chassis, you can upgrade the software via ComPair. You can find more information on how this procedure works in the ComPair file. It is possible that not all sets are equipped with the hardware, needed to make software upgrading possible. To speed up the programming process the firmware of the ComPair interface can be upgraded. See paragraph "How To Order" for the order numbers.
Service Tips: · In case of non-intermittent faults, clear the error buffer before you begin the repair. This to ensure that old error codes are no longer present. Before clearing the buffer, write down the content, as this history can give you significant information. · If possible, check the entire contents of the error buffer. In some situations, an error code is only the result of another error code and not the actual cause (e.g., a fault in the protection detection circuitry can also lead to a protection).
5.6
5.6.1
The Blinking LED Procedure
Introduction Via this procedure, you can make the contents of the error buffer visible via the front LED. This is especially useful for fault finding, when there is no picture. When the SDM is activated, the front LED will show (by blinking) the contents of the error-buffer. Error-codes > 10 are shown as follows: 1. A long blink of 750 ms (which is an indication of the decimal digit), 2. A pause of 1500 ms, 3. "n" short blinks (where "n" = 1 - 9), 4. When all the error-codes are displayed, the sequence finishes with a LED blink of 3000 ms, 5. The sequence starts again. Example: Error 12 9 6 0 0. After activation of the SDM, the front LED will show: 1. 1 long blink of 750 ms (which is an indication of the decimal digit) followed by a pause of 1500 ms, 2. 2 short blinks of 250 ms, followed by a pause of 3000 ms, 3. 9 short blinks of 250 ms, followed by a pause of 3000 ms, 4. 6 short blinks of 250 ms, followed by a pause of 3000 ms, 5. 1 long blink of 3000 ms to finish the sequence, 6. The sequence starts again.
5.6.2
How to Activate Use one of the following methods: · Activate the SDM (only via soldering pads marked "FOR SERVICE" on the SSB). The blinking front LED will show the entire contents of the error buffer (this works in "normal
Block Diagrams, Testpoint Overviews, and Waveforms
ES1E AA
6.
15
6. Block Diagrams, Testpoint Overviews, and Waveforms
Wiring Diagram
E
TOP CONTROL PANEL
DEGAUSSING COIL
CRT
AQUADAG
EHT
ROTATING COIL
0215 3p
F
SPEAKER R
1382 2p
CRT PANEL
(COMPONENT VIEW)
7p 1351 WHITE 1361 3p
2p
3p RED 1335
SCAVEM COIL
SPEAKER L
M Q1
5p
FRONT INTERFACE PANEL
1951
MAINS SWITCH
1336
CRT SOCKET
1340 7p
F
CRT PANEL
0203
0202
0201
2p
2p
A D
SVHS 0240 CVBS (YELLOW) LEFT (WHITE) RIGHT (RED) 11p
LSP(LARGE SIGNAL PANEL)
MAINS CORD 1911 4p 1505 2p
SIDE I/O PANEL
1502
2p
HEADPHONE
1620 11p 3p 80p 1401 5p 1645
B SSB SIGNAL BOARD SMALL
1624
B
7p
2p 1404
LOT 5p 1629
TUNER TUNER
CINCH 2p SCART 2p
1943 Compair connector
3p
1452
F_15040_054.eps 250405
Block Diagrams, Testpoint Overviews, and Waveforms
ES1E AA
6.
16
Block Diagram LSP Supply and Deflection
M Q1 FRONT INTERFACE
0201 1 1051 1031 1951 0202 1
2 MAINS SWITCH
2
A2 LINE + FRAME DEFLECTION A1 POWER SUPPLY
1504 1 Degaussing Coil 4 2 2 1 1503 7541 ENERGIZING CIRCUIT (optional) +Vaudio
Vbatt
3523
3
LINE
+5V
1505
1500 T4E
5500 : 5502
6500
AC F508
6465 3 5402 7405 BU4508DX
5450 EHT TO CRT
or
VDC 7404
DC
1
B1
2505 5512 9 8 17 18 13 14 5561 6562 +9VA 3571 7571 REFERENCE CIRCUIT 4 1 7513 TCET1103 3 2 7573 STANDBY CIRCUIT STANDBY +3V3 3576 5 6453
3458
F453
5551
6551
5552
F563
Vbatt FOCUS G2 LINE OUTPUT CIRCUIT + E/W CORR. 1404 1 10 2 HOR. DEFL. COIL
7511 TEA1507
DRAIN
3513 14 11 9 3514
G
4 7512
D S
5562 6563
-Vaudio
F561
EHTinfo
5 3 2
EW_DRIVE +Vaudio
DRIVER I511
2 2511 6
Vcc
SENSE
3522 3516
7517
10
2477
3477
3485
HFB
CONTROL IC
CTRL DEMAG
7
3517
11,12 6511
6469 3575 7 12
Filament
3456
6452
-14V
3518
VideoSupply
A6
6
B4
3598
MPIF-SUPPLY, E/W &CONTROL
7300-D ADOC
8 11 9
6461
3450
+12V_LOT
6536 VDC
5505
+9VA
EWVIN EWIOUT
36 37
1532
3519
7510 2 14
3536
5504 8 5 4 9 10 11 6535 5564 +5V2 +5V 7545
6
EW_DRIVE HDRIVE SVM_ROT
+12V_LOT
1401 7 6 5 4 VideoSupply 3 2 +13V 1 TO 1351
SUPPLY CONTROL
3527
6
11 9 7
3526
7525
2 1
12 13 14 +Vaux 7535
3546
B8 SYNC & DEFLECTION PROCESSING B18
7300-F ADOC
+5V
SSB CONNECTOR INTERFACE
A6
Vbatt
INTERFACING
F
CRT
EHTinfo
STANDBY CIRCUIT
Filament
7532
3358
HDROUT
6581
L1
3350 3374 3375
LINEDRIVE1 FRAMEDRIVE+
0230 26 28
1670 26 28 29 31 32 34
HDRIVE INN INP EW_DRIVE HFB_XRAY_PROT EHT-INFO
7455 TDA4863J
VDRP R1
3537
1 VP1
3 VP2
F466
VDRN
3545
R2 T2
FRAMEDRIVE- 29 EW_DRIVE 31
7 6
INP INN
7542 REFERENCE CIRCUIT 3 1 7516 TCET1103 4 2 STANDBY CIRCUIT
FRAME
V-OUT 5
1452 1 3
EWP
HFB L3
3544
3353 3354
7361
+5V
HFB_XRAY_PROT 32 EHT-INFO 34
EHT N3
STANDBY
GND 4
F459
VER. DEFL. COIL
BCL N2
A4
+8V 7365
3471
HOT GROUND
COLD GROUND
F_15040_060.eps 290405
Block Diagrams, Testpoint Overviews, and Waveforms
ES1E AA
6.
17
Testpoint Overview LSP
F232 F233 F234 F235 F241 F242 F243 A8 A8 A9 A10 A10 A10 A10 F246 F247 F248 F249 F250 F401 F402 B8 A8 A8 A7 A6 D6 E7 F404 F416 F418 F419 F451 F452 F453 F8 G6 G7 G8 F9 G10 C7 F455 F456 F457 F458 F459 F462 F464 C7 G10 G10 D8 G7 F9 F6 F465 F466 F469 F472 F475 F476 F478 F6 D9 D9 C8 C8 D8 D9 F481 F482 F483 F500 F501 F502 F503 E9 C8 D8 D1 F2 E2 G1 F504 F506 F507 F508 F509 F535 F537 F1 G1 G1 F3 G4 C3 C5 F541 F542 F552 F561 F562 F563 F573 D3 D3 E5 D4 D5 D5 D6 F574 F575 F576 F578 F580 F581 F582 D4 F5 C4 C4 D6 C4 C3 F583 F620 F627 F628 F629 F630 F631 E5 C8 A5 A5 B8 B8 B8 F632 F672 F673 F674 F675 F676 F677 B8 A6 B8 C6 B6 B6 B9 F678 F679 F701 F702 F703 F704 F705 C6 C7 D9 D10 D10 D10 C9 F706 F708 F710 F711 F712 F713 F714 C10 C10 C10 B10 C10 C9 B10 F715 F716 F717 F718 F719 F720 F721 B9 B10 C10 B9 B10 B10 B9 F722 F723 F724 F901 F903 F904 F905 B10 B10 B10 B4 A4 B3 C3 F910 F911 F912 F913 F950 F951 F952 B3 B4 A5 B2 A5 B5 A4 F955 F956 F958 F959 I232 I239 I240 B4 C3 A5 A5 A9 A9 A9 I241 I242 I247 I248 I249 I253 I254 A6 A6 A6 B8 A7 A7 A7 I255 I256 I259 I260 I261 I402 I410 A7 B6 A7 A9 A9 G9 F10 I413 I414 I415 I418 I419 I420 I423 D6 C7 D7 G6 G6 E6 D7 I428 I432 I435 I436 I437 I438 I439 F7 E8 D8 D8 D6 D9 E8 I440 I442 I443 I445 I446 I447 I448 E8 E10 F9 D7 D7 D6 D6 I449 I450 I453 I455 I457 I458 I459 D6 F6 G9 F9 F8 F8 F9 I460 I462 I463 I464 I466 I468 I469 D8 G7 G10 F10 E8 E8 E9 I470 I473 I475 I476 I480 I481 I482 D8 E7 F9 D9 D9 D9 G10 I487 I488 I489 I490 I491 I492 I493 D7 G6 G7 D7 D7 E9 G10 I494 I495 I496 I497 I499 I500 I501 E8 D9 E7 F6 D7 F3 G3 I502 I503 I504 I506 I507 I509 I510 G2 G1 G1 F3 E2 F4 E3 I511 I512 I513 I514 I515 I516 I517 G5 E4 F5 F5 F5 G5 G5 I518 I519 I520 I521 I522 I523 I525 F5 G5 F6 G5 D6 F6 E3 I526 I527 I528 I529 I530 I531 I532 F3 G6 E4 D4 F3 E3 E3 I533 I534 I536 I537 I538 I539 I540 I542 I543 I544 I545 I546 I547 I548 I550 I551 I552 I553 I554 I555 I557 I558 I559 I560 I561 I562 I563 I564 I565 I566 I568 I569 I570 I571 I572 I573 I574 I575 I577 I578 I579 I580 I581 I582 I583 I586 I587 I588 I589 I590 I591 I592 I593 I596 I597 I599 I602 I603 I604 I605 I606 I608 I609 I610 I611 I612 I616 I621 I622 I623 I624 I625 I626 I627 I628 I629 I630 I631 I632 I633 I634 I635 I636 I637 I638 I639 I640 I650 I672 I674 I677 I678 I680 I685 I686 I687 I688 I689 I690 I691 I693 I694 I695 I696 I701 I702 I703 E4 F2 E3 E3 D4 D3 D3 D2 C3 E4 C3 F5 C4 F5 E3 E5 E5 F3 F3 E4 E2 D4 G2 F4 E4 E4 E2 F6 D4 D4 D3 D5 D5 E6 F1 D5 D6 E6 C4 E6 E5 D5 D4 G5 F1 E5 D4 C4 D5 D4 D4 D4 D4 D6 D5 D5 A9 C6 B7 C7 C6 C6 C9 B9 C9 A7 B8 A6 A6 A5 A5 A5 A5 C6 C6 C6 B6 C6 A8 B8 C7 A7 B8 B8 C8 C8 B7 C7 B8 A7 B7 B9 B7 B6 B6 B6 B7 B7 B7 A5 C7 C7 B7 A6 D9 D10 C9 I704 I705 I707 I708 I709 I710 I711 I712 I713 I714 I715 I716 I717 I719 I720 I721 I722 I723 I724 I725 I726 I727 I728 I729 I731 I732 I733 I734 I735 I736 I737 I738 I739 I740 I741 I901 I902 I903 I904 I908 I909 I913 I914 I915 I916 I918 I920 I921 I922 I924 I925 I926 I927 I928 I930 I934 I935 I936 I938 I941 I943 I945 I948 I951 I952 I953 I954 I956 I957 I958 I959 I960 I962 I963 I964 I965 I967 D10 C9 C10 C10 C9 C9 B9 B10 B10 B10 B10 B10 C10 D9 C9 D9 C10 B9 B9 B9 C9 A10 B10 A10 D9 D9 C9 C9 C9 B10 B9 C10 D10 C10 C10 B4 C2 A3 A3 A3 A3 A4 A4 B4 B4 B4 C4 A3 B3 B3 A3 B3 A3 B4 B4 B4 C3 A3 B3 A3 A3 B4 A3 B5 B5 A5 B5 B4 B5 C5 B4 B5 B5 B4 C4 B5 C4
3139 123 5895.4
F_15040_010.eps 220305
Block Diagrams, Testpoint Overviews, and Waveforms
ES1E AA
6.
18
Block Diagram 1 Audio & Video
A5
TUNER
+5V VTUN 6200 0230 1232 7,3 9 11 7100-C 13 IF-TER 2101 14 4 SDA SCL 0230 48 15 AGC SDA0 SCL0 3132 +8Va 3102 4107 3101 4108 7101//7104 +5Va B11 +5Vd B17 COUT-C OMB CVBS-SC3 4152 7062 3 8 SIFINN 6101 2 1112(2) 7 SIFINP 5 1 4101 4102 4103 4104 6102 2 3 1114(1) 1113 7 8 VIFINP VIFINN 107 108 110 (1) Present for China only (2) Present for AP-Multi, China & EU only
B1
IF & SAW FILTER
+5Vb
B2
VIDEO SOURCE SELECT & DATA LINK
7100-B 7063
MPIF VIDEO SWITCH
Ident CVBS/Y prim 7060 120 2062 CLP prim 123 CVBS-IF CVBS-SC1_AV1-IN 126 CVBS-1 1 CVBS-2 + 4 CVBS/Y-3 5 C3 8 CVBS/Y-4 9 C4 15 Y-COMB 54MHz 16 C-COMB 12 CVBS-DTV CLAMP LPF Yyuv 2Fh CLP sec YUV RGB CLAMP Source Switch LPF U V 27/54 MHz A D Mono Sec. Dig. CLP prim CLP sec CLP Yyuv Yyuv A D U,V SIFA/D A D Data Link 3 C prim LPF CLAMP LPF A D 54MHz Yyuv 2Fh LR prim Dig Data Link 1
CVBS-outA 19
CVBS_SC2_MON_OUT
B18
MPIF IF + QSS
Sound Tra ps
STROBE1N 60 STROBE1P 61 DATA1N 62 DATA 1P 63
STROBE1N STROBE1P DATA1N DATA 1P
2 3
7 8
TUNER_AGC 105
SIF A/D 7131 QSS Mixer AM Demod. AM Int 122 125 118 116 LPF EF SIF_MAIN (PIP/DW)
CVBS2_PIP_TUN2
B18
SIMM CONN
49
99 100
Y-CVBS-SC2_AV2-IN C-SC2_SVHS-IN Y-CVBS-FRO NT-IN C-FRONT-IN
STROBE3N 50 STROBE3P 51 DATA3N 53 DATA 3P 54
STROBE3N STROBE3P DATA3N DATA 3P
SEL-IF-LL
YOUT-C OMB
CVBS_TER_OUT
22 CVBS-outB
CVBS sec
1936 OR 0240
R-SC1_V-IN
25 R/Pr/V1 26 G/Y/Y-1 27 B/Pb/U1
1620
0230
0230
A11
INPUTS/OUTPUTS
SCART 2 21 20 Y/CVBS-In 17 15 7 14 8 9 P50
B18
SIMM CONNECTOR
C-SC2_SVHS-IN
D
SIDE IO PANEL
4 3242 7
A6
4 7
INTERFACING
B18
64 62
SIMM CONN
C-FRONT-IN
G-SC1-IN_Y-IN B-SC1-IN_U-IN
STROBE2N 55 56 Data STROBE2P Link DATA2N 57 2 DATA 2P 58
STROBE2N STROBE2P DATA2N DATA 2P
16 MON-Out 15 C-In
19 SEL-SVHS-RR_STATUS2 4 FBL-SC1-IN CVBS_TER_OUT COMM_LINE CVBS-SC1_AV1-IN Y-CVBS-SC2_AV2-IN L-SC1_AV1-IN R-SC1_AV1-IN L-SC2_AV2-IN R-SC2_AV2-IN R-SC1-IN_V-IN G-SC1-IN_Y-IN B-SC1-IN_U-IN CVBS-SC2_MON-OUT
B11 B5
C SVHS 2 Y
FRONT- DETECT B11 49 64
HV-PRIM Timing Circuit
46
HV_PRIM HV_SEC
+5V B11 CVBS 2 2 63 Y-CVBS-FRO NT-IN
VCC-DIG VCC-I2D
CLP Yyuv
20 14 10 17 13 4 3 10 6 52 60 53 58 3 2 1 9
HV-S EC 45
C-Out 12 L-Out 11 R-Out
Status L-In 2 R-In
B5
1
AV3
L
6
6
65
L-FRONT-IN
B3
AUDIO SOURCE SELECT
7100-A
B4
MPIF AUDIO SW ITCH
MPIF-SUPPLY EW & CONTROL
+5V 2 7150-A 3150 VREF_AUD_POS B10 3151 +5V 7150-B 20 21 3152 3153 14,28,35 IRQ 42 SDA 43 VREF_DEFL B11 B8
SCART 1 13 21 20 CVBS-In 10 9 TER-Out 7 7 R-In 6 G-In 5 B-In Status L-In 2 R-In 4 12 11 1 3 2 1 AUDIO-L OUT AUDIO-R OUT AUDIO-SL OUT FBL-In 8 6 5 16
R 3242
8
8
66
R-FRONT-IN +5V
7100-D
91,77 98,88 AM Int
10 HP B2 B11 11
10 11
HEADPH-L HEADPH-R B18
+8V
L prim
LPF
A D LR prim Dig Supply + Ref.
3
18 STATUS1_PIP-AFT-5 0-60HZ 55 59 56 61 69 70 72 L-SC2-OUT R-SC2-OUT L-SC1_AV-O UT R-SC1_AV-O UT L-CL_VL-OUT R-CL_VL-OUT AUDIO-SURR B10
PIP-AUDIO L-SC1_AV1-IN R-SC1_AV1-IN AUD-L1 AUD-R1 L-SC2_AV2-IN R-SC2_AV2-IN L-FRONT-IN R-FRONT-IN AUD_L2 AUD_R2
17 86 85 84 83 82 81 80 79 127 128
AM EXT L1 R1 L2 R2 L3 R3 L4 R4 L5 R5 LR prim A/D Mono LR sec Line A/D LR Scart +
LPF R prim
A D
2 L-Out 1 R-Out
Mono sec
LPF
A D
Mono sec Dig
+5V MPIF-IRQ SDA1 SCL1 F_REF EW_MPIF EW-DRIVE
I2C
SCL 44 XREF 40 EWVIN 36
EW V I
EWIOUT 37
DSNDL1 DSNDR1 DSNDL2 DSNDR2
75 74 73 72
DSNDL1 DSNDR1 DSNDL2 DSNDR2 AUDIO AMPs
EUROPE ONLY SCART2R 65 SCART2L 66 SCART1R 69 SCART1L 70 LINER 67 R-SC2-OUT L-SC2-OUT R-SC1_AV-O UT L-SC1_AV-O UT R-CL_VL-OUT L-CL_VL-OUT AUDIO-OUT OR MONITOR-OUT 1ST & 3RD SCART 2ND SCART
B10
LINEL 68
F_15040_055.eps 250405
Block Diagrams, Testpoint Overviews, and Waveforms
ES1E AA
6.
19
Block Diagram 2 Audio & Video
B11
CONTROL
7300-A,C,E & K 5583 VDDCO 5570 VDDE
ADCVDDA XVDD
B12
ADOC-uP & CONTROL
EBIU BUS
MEMORY INTERFACE
7790 FLASH
A1..A21 D0..D15
B7
RGB PROCESSING
VDDE 7300-H
CDAC2CDAC1VDDA VDDA
A6
INTERFACE
ADOC RGB
SVMP 7310 ROUTP 0230 25 R-CRT 1670 25
F
CRT PANEL
+8V_+12V
+141V 1361 1 SCAVEM PROC. 3 200V SCAVEM COIL
VDDE 9,37 43 15 B11
MIPS
EBIU
VDD W E G VPP VDDQ
GFX BLANKING
BLENDER
FAST PI_BUS 2581
XIN
R RB 53 RB FROM B6 RP 16 FLASH_RST G B
7320 DRIVE ADJUST CDAC CDAC GOUTP G-CRT
24
24
SRAM 128KB B7 GFX GFX GEN
MPIFCLK
1629 1
1340 1
7307 3
6 7 R
1581
XOUT
PI-PI BRIDGE
7330 BOUTP B-CRT
2 23 23 3
2
2
8
G CRT
2582 SLOW PI_BUS
F_REF
3
1
9
B
SCAVEM BLENDER CONTROL VDDE 7525 5 6 7 SDA SCL WC_ 8 FIXED BEAM CURRENT SWITCH OFF RGB GAIN RGB CUTOFF ADC ADC LEAKAGE COMPASATOR IBCRANGE IBC
7346 CUTOFF 21 21 5 5 7356 FOCUSA FOCUSB VG2 9 1351 1 3307 3306 12 5 CUTOFF
B4
P1-2 P1-3 SDA1 SCL1 RES 4565 4564 P1-5
TIMER
RB KEYBOARD
P0-2 ADC0 ADC4 P2-6 ADC2 ADC3 P0-3 ADC1 ADC
I2C
NVM
B18
TO/FROM 14 OF LSP A2
LIGHT-SEN SOR RC5
(SCART)
B8
TILT
EHT FROM LOT
2 DC_FILAMMENT
B18
STATUS1_PIP-AFT-5 0-60HZ SEL-SHVS-RR_STATUS2 DTV_EXPENSION FRONT- DETECT SDM
SSB CONN INTERFACE
79 37 78 77
A6
0230 1670 79 37 78 77
INTERFACING
E
1645 0215 2 2
TOP CONTROL
M
MAINS SWITCH PANEL
Q1
FRONT INTERFACE
3 4 5 6 7
200V EHT- INFO +141V +8V_+12V SVM_ROT 7366 TDA8941P SCAVEM PROC.
A3
A/D
P1-0 P1-1
SDA0 SCL0 B1 KEYBOARD LIGHT-SEN SOR RC5
N.C.
1091~4 1008 0215 0215 3 3 4 +5V2 1 4 1 1002 5 IN+
P0-5 P2-2
SEL-IF-LL ON-OFF-LED COMM_LINE (SCART) B18 SEL-2FH-SRC_STATU S3 ON-OFF-LED
3
IN-
OUT- 5
1382 1 ROTATION COIL
(FROM 0223) FOR 2FH I/P or SCART-3 SEL-2FH-SRC_STATU S3 B4 MPIF-IRQ
P2-4 ADC5 P0-4 P0-7 P0-6 P3-0 P3-2
OUT+ 5
3
SOUND-ENABLE DEGAUSS STANDBY
A4
0230 1670 51 80 36 50 51 80 36 50 VOL_MUTE DEGAUSSING STANDBY POR A3 A2 A1
AUDIO AMPLIFIER
GPIO
7991 SOUND ENABLE 7990 7 7433 SDAC1-V DDA SDAC1-3V3 AUDIO-R 76 10 AUDIO-L 75 7432 1 4 1 LEFT 9 6 +Vaudio 1911 4 RIGHT
P0-1
B8
POR_FLASH
RESET_
B10
POR_FLASH 3590 VDDE 7581 1 SYSTEM RESET (50ms) 5 3582 +5V2 3586 4 3583 FLASH_RST 7300-x
AUDIO PROCESSING
VDDCO
VDDE
ADOC SOUND & AUDIO PROCESSING
Demodulation and Decoding DSP DDEP SSIF B5 EXT. STER EO EXT. MONO Down Mix Preprocessing SRC Dematrix and Select
Decimation Filter AUD_SPK_R
B18
SSB CONN INTERFACE
A6
0230 1670 70 70 69 69
INTERFACING
A7
1705-1
SCART I/O
B15
LOW VOLTAGE SUPPLY - ADOC
Noise Shaper Level Adj. I/P XBar Audio Processing DSP O/P XBar
AUD_SPK_L AUD_SPK_SW AUD_SPK_C AUD_SPK_SL DAC AUD_HP_R AUD_HP_L B4 VREF_AUD_POS 2447 SCK02 B4 VREF_AUD_NEG SD02 SCKI WSI SDI I2SIN I2SOUT DSNDR2 DSNDL2 DSNDR1 WS02 DSNDL1 2 7480 1 8 +5V HEADPHONE-L 67 67 HEADPH-L 10 10 HEADPHONE-R 0230 68 1670 68 1620 HEADPH-R 11 B3 72 72 1705-3 1705-2
AUDIO-R
AUDIO-L
AUDIO-SURROUND
5600 VDDCO +5V2 7651 6651 2651 +1V8
WS PLL
D
1936 0240 11
SIDE I/O
1254
8 Vc +3V3 6 Vcc
1 7650 Vgate Vfb Gnd 4 5
3651
7300-B
N.C.
N.C.
B3
6
7
3652
F_15040_056.eps 250405
Block Diagrams, Testpoint Overviews, and Waveforms
ES1E AA
6.
20
Block Diagram 3 Audio & Video
EHT-INFO KEYBOARD 7383-A +8V 3387 7383-B 3384 HFB_X-RAY-PROT 3398 2397 6397 6382 7382 6385 +3V3 7393 3385 +5V 3354 6353 7361 3364 6381 6384 +3V3 VDDE +3V3 5601 47 46 44 A8 FROM TUNER SIMM CONN. 3380 +5V2 +8V +5V +8V 40 45 43 0230 B7
B9
PROTECTION
A6
INTERFACING
A2
FROM BLOCK DIAGRAM STAND-BY SUPPLY
B5
VIDEO DECODER
B8
DMSD=Digital Multi Standard Decoder EXT. STEREO
SYNC & DEFLECTION PROCESSING 7300-F
3353 3361 3350
7300-J STROBE1N STROBE1P DATA1N DATA 1P STROBE3N SAMPLE RATE CONVERTER STROBE3P DATA S YNC DATA3N DATA 3P STROBE2N STROBE2P DATA2N DATA 2P H-2FH FROM 1116 B18 V-2FH FBL-SC1-IN HV_PRIM HV_SEC EXT. MONO Ext Syn c Mux I2D2 SEC SSIF I2D3 CHR. MUX AGC_AMP I2D1 PRI Sync Mux.
ADOC VIDDEC (PRI & SEC)
DLINK-VDDA DLINK-VDDD VID1-DTC-VDDA
VDDCO HVSYNC VDDE 3341 B5
ADOC DOP
1st CONTROL LOOP 2nd CONTROL LOOP
X-PROT
FLASH
HFB HIRES. TIMING GEN. HDROUT
SLOW START/STOP L0W POWER STARTUP
LINEDRIVE1 26 EHT-INFO 34 3368 6367 3367
A3
DMSD
3372
VID1-DTC-VDD3
VDDE VDDE VERT. DRIVER BPA VDDCO DOP-DTC-VDDA DOP-DTC-VDD3 IMEAS-VDDA VDDE B4 VREF_DEFL SDAC-3V3 SDAC-VDDA
EHT 7365 ADC BCL FBCIN POR_FLASH VDRP VERT. WAVEFORM SDAC VDRN EWP
6365 2361
EHT-INFO
DEMUX
PLLVDDA
3340
+8V SEL2FH HOR.TIMEBASE GEN. Hor. TIMEBASE GEN. DTO & CONTROL LOOP 6368
2455
B8 HVSYNC VIDDEC2 FORMATER B6 VIDDEC1 SRC for HFB1/ H-Sync
3346
VERT. SAWTOOTH
EAST-WEST WAVEFORM
3373
TO BLOCK DIAGRAM DEFLECTION
B11
FRAMEDRIVE+
FASTBLANK FIFO
FAST BLANK SWITCH
EW_MPIF B4
2 8 2 FRAMEDRIVE9 EW-DRIVE 31
A4 A4 A5 TO ROTATION CIRCUITRY
SYNC 2Fh
B7 HV INFO
TILT 35
B2
B13
MEMORY INTERFACE 7730 SDRAM 1,14,27 3,9,43,49
VDDE
VDD VDDQ
FIELD MEMORY & TXT PG
B6
7300
FEATURE BOX
MMI BUS
7300
7300-I
SA0...SA11 SD0...SD15
7300 13.5 / 27 MHz @ 720 ppl 27 / 54 MHz @ 1440 ppl F I L T E R LUMINANCE SHARPNESS SHARPNES S MEASURE LTI DYN. PEAKING R PANORAMA RGB MATRIX Y U V Y SKIN TONE CONTROL BLUE STRETCH GREEN ENHANCE U V B FRAME PROC. G TO B7
ADOC FEF
SAMPLE RATE CONVERTER
ADOC MBF
SUB CH. SUB CH. (YUV) HOR. COMPRESS VERT. COMPRESS NOISE SHAPER DTL I/F
ADOC BEF
VIDDEC2 (YUV) B5 VIDDEC1 (YUV)
BLACK STRETCH
MEMORY CTRL/SWI.
BLACK STRETCH
HISTOG. MODIFY MEASUREMENT BLOCKS BLACK BAR DET.
MAIN CH.
INPUT SWITCH MATRIX
SUB FIFO CACHE
MEMORY BUS DEVICE INTERF.
UNDITHER UNDITHER
HISTOG. MEAS.
SCAN RATE CONVERT
Y
Y
BLACK LEVEL DET NOISE MEAS.
MAIN CH. (YUV)
HOR. COMPRESS
MAIN FIFO CACHE
NOISE SHAPER
DNR UNDITHER OUTPUT MUX. Y UV UV DCTI U V
MODE CONTROL
DISPLAY CONTROL DCTI=Digital Color Transient I