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IMPORTANT SAFETY NOTICE
Proper service and repair is important to the safe, reliable operation of all Philips Consumer Electronics Company** Equipment. The service procedures recommended by Philips and described in this service manual are effective methods of performing service operations. Some of these service operations require the use of tools specially designed for the purpose. The special tools should be used when and as recommended. It is important to note that this manual contains various CAUTIONS and NOTICES which should be carefully read in order to minimize the risk of personal injury to service personnel. The possibility exists that improper service methods may damage the equipment. It also is important to understand that these CAUTIONS and NOTICES ARE NOT EXHAUSTIVE. Philips could not possibly know, evaluate and advise the service trade of all conceivable ways in which service might be done, or of the possible hazardous consequences of each way. Consequently, Philips has not undertaken any such broad evaluation. Accordingly, a servicer who uses a service procedure or tool which is not recommended by Philips must first satisfy himself thoroughly that neither his safety nor the safe operation of the equipment will be jeopardized by the service method selected. ** Hereafter throughout this manual, Philips Consumer Electronics Company will be referred to as Philips.
WARNING
Critical components having special safety characteristics are identified with a or "S" by the Ref. No. in the parts list and enclosed within a broken line* (where several critical components are grouped in one area) along with the safety symbol on the schematics or exploded views. Use of substitute replacement parts which do not have the same specified safety characteristics may create shock, fire, or other hazards. Under no circumstances should the original design be modified or altered without written permission from Philips. Philips assumes no liability, express or implied, arising out of any unauthorized modification of design. Servicer assumes all liability. * Broken Line ____ _ ____ _ ____ _ ____
FIRE AND SHOCK HAZARD
1. Be sure all components are positioned in such a way as to avoid the possibility of adjacent component shorts. This is especially important on those chassis which are transported to and from the service shop. 2. Never release a repaired unit unless all protective devices such as insulators, barriers, covers, strain reliefs, and other hardware have been installed in accordance with the original design. 3. Soldering and wiring must be inspected to locate possible cold solder joints, solder splashes, sharp solder points, frayed leads, pinched leads, or damaged insulation (including the ac cord). Be certain to remove loose solder balls and all other loose foreign particles. 4. Check across-the-line components and other components for physical evidence of damage or deterioration and replace if necessary. Follow original layout, lead length, and dress. 5. No lead or component should touch a receiving tube or a resistor rated at 1 watt or more. Lead tension around protruding metal surfaces or edges must be avoided. 6. Critical components having special safety characteristics are identified with an 'S' by the Ref. No. in the parts list and enclosed within a broken line* (where several critical components are grouped in one area) along with the safety symbol on the schematic diagrams and /or exploded views.
7. When servicing any unit, always use a separate isolation transformer for the chassis. Failure to use a separate isolation transformer may expose you to possible shock hazard, and may cause damage to servicing instruments. 8. Many electronic products use a polarized ac line cord (one wide pin on the plug). Defeating this safety feature may create a potential hazard to the servicer and the user. Extension cords which do not incorporate the polarizing feature should never be used. 9. After reassembly of the unit, always perform an ac leakage test or resistance test from the line cord to all exposed metal parts of the cabinet. Also, check all metal control shafts (with knobs removed), antenna terminals, handles, screws, etc., to be sure the unit may be safely operated without danger of electrical shock. * Broken line ____ _ ____ _ ____ _ ____
LEAKAGE CURRENT COLD CHECK
1. Unplug the ac line cord and connect a jumper between the two prongs of the plug. 2. Turn on the power switch. 3. Measure the resistance value between the jumpered ac plug and all exposed cabinet parts of the receiver, such as screw heads, antennas, and control shafts. When the exposed metallic part has a return path to the chassis, the reading should be between 1 megohm and 5.2 megohms. When the exposed metal does not have a return path to the chassis, the reading must be infinity. Remove the jumper from the ac line cord.
LEAKAGE CURRENT HOT CHECK
1. Do not use an isolation transformer for this test. Plug the completely reassembled receiver directly into the ac outlet. 2. Connect a 1.5k, 10W resistor paralleled by a 0.15uF. capacitor between each exposed metallic cabinet part and a good earth ground such as a water pipe, as shown below. 3. Use an ac voltmeter with at least 5000 ohms/volt sensitivity to measure the potential across the resistor. 4. The potential at any point should not exceed 0.75 volts. A leakage current tester may be used to make this test; leakage current must not exceed 0.5mA. If a measurement is outside of the specified limits, there is a possibility of shock hazard. The receiver should be repaired and rechecked before returning it to the customer. 5. Repeat the above procedure with the ac plug reversed. (Note: An ac adapter is necessary when a polarized plug is used. Do not defeat the polarizing feature of the plug.)
OR
With the instrument completely reassembled, plug the ac line cord directly into a 120Vac outlet. (Do not use an isolation transformer during this test.) Use a leakage current tester or a metering system that complies with American National Standards Institute (ANSI) C101.1 Leakage Current for Appliances and Underwriters Laboratories (UL) 1410, (50.7). With the instrument ac switch first in the on position and then in the off position, measure from a known earth ground (metal water pipe, conduit, etc.) to all exposed metal parts of the instrument (antennas, handle brackets, metal cabinet, screw heads, metallic overlays, control shafts, etc.), especially any exposed metal parts that offer an electrical return path to the chassis. Any current measured must not exceed 0.5mA. Reverse the instrument power cord plug in the outlet and repeat the test. See the graphic below.
TV SAFETY NOTES
SAFETY CHECKS
After the original service problem has been corrected, a complete safety check should be made. Be sure to check over the entire set, not just the areas where you have worked. Some previous servicer may have left an unsafe condition, which could be unknowingly passed on to your customer. Be sure to check all of the following: Fire and Shock Hazard Implosion X-Radiation Leakage Current Cold Check Leakage Current Hot Check Picture Tube Replacement Parts Replacement WARNING: Before removing the CRT anode cap, turn the unit OFF and short the HIGH VOLTAGE to the CRT DAG ground. SERVICE NOTE: The CRT DAG is not at chassis ground.
IMPLOSION
1. All picture tubes used in current model receivers are equipped with an integral implosion system. Care should always be used, and safety glasses worn, whenever handling any picture tube. Avoid scratching or otherwise damaging the picture tube during installation. 2. Use only replacement tubes specified by the manufacturer.
X-RADIATION
1. Be sure procedures and instructions to all your service personnel cover the subject of X-radiation. Potential sources of X-rays in TV receivers are the picture tube and the high voltage circuits. The basic precaution which must be exercised is to keep the high voltage at the factory recommended level. 2. To avoid possible exposure to X-radiation and electrical shock, only the manufacturer's specified anode connectors must be used. 3. It is essential that the service technician has an accurate HV meter available at all times. The calibration of this meter should be checked periodically against a reference standard. 4. When the HV circuitry is operating properly there is no possibility of an X-radiation problem. High voltage should always be kept at the manufacturer's rated value - no higher - for optimum performance. Every time a color set is serviced, the brightness should be run up and down while monitoring the HV with a meter to be certain that the HV is regulated correctly and does not exceed the specified value. We suggest that you and your technicians review test procedures so that HV and HV regulation are always checked as a standard servicing procedure, and the reason for this prudent routine is clearly understood by everyone. It is important to use an accurate and reliable HV meter. It is recommended that the HV reading be recorded on each customer's invoice, which will demonstrate a proper concern for the customer's safety.
5. When troubleshooting and making test measurements in a receiver with a problem of excessive high voltage, reduce the line voltage by means of a Variac to bring the HV into acceptable limits while troubleshooting. Do not operate the chassis longer than necessary to locate the cause of the excessive HV. 6. New picture tubes are specifically designed to withstand higher operating voltages without creating undesirable X-radiation. It is strongly recommended that any shop test fixture which is to be used with the new higher voltage chassis be equipped with one of the new type tubes designed for this service. Addition of a permanently connected HV meter to the shop test fixture is advisable. The CRT types used in these new sets should never be replaced with any other types, as this may result in excessive X-radiation. 7. It is essential to use the specified picture tube to avoid a possible X-radiation problem. 8. Most TV receivers contain some type of emergency "Hold Down" circuit to prevent HV from rising to excessive levels in the presence of a failure mode. These various circuits should be understood by all technicians servicing them, especially since many hold down circuits are inoperative as long as the receiver performs normally.
PICTURE TUBE REPLACEMENT
The primary source of X-radiation in this television receiver is the picture tube. The picture tube utilized in this chassis is specially constructed to limit X-radiation emissions. For continued Xradiation protection, the replacement tube must be the same type as the original, including suffix letter, or a Philips approved type.
PARTS REPLACEMENT
Many electrical and mechanical parts in Philips television sets have special safety related characteristics. These characteristics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. The use of a substitute part which does not have the same safety characteristics as the Philips recommended replacement part shown in this service manual may create shock, fire, or other hazards.
PRODUCT SAFETY GUIDELINES FOR ALL PRODUCTS
CAUTION: Do not modify any circuit. Service work should be performed only after you are thoroughly familiar with all of the following safety checks. Risk of potential hazards and injury to the user increases if safety checks are not adhered to. USE A SEPARATE ISOLATION TRANSFORMER FOR THIS UNIT WHEN SERVICING.
PREVENTION OF ELECTROSTATIC DISCHARGE (ESD)
Some semiconductor solid state devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices, Examples of typical ES devices are integrated circuits and some field-effect transistors and semiconductor "chip" components. The following techniques should be used to help reduce the incidence of component damage caused by electrostatic discharge (ESD). 1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any ESD on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging ESD wrist strap, which should be removed for potential shock reasons prior to applying power to the unit under test. 2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly. 3. Use only a grounded-tip soldering iron to solder or unsolder ES devices. 4. Use only an anti-static solder removal device. Some solder removal devices not classified as "antistatic (ESD protected)" can generate an electrical charge sufficient to damage ES devices. 5. Do not use Freon propelled chemicals. These can generate electrical charges sufficient to damage ES devices. 6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it (most replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or comparable conductive material). 7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material to the chassis or circuit assembly into which the device will be installed. CAUTION: Be sure no power is applied to the chassis or circuit and observe all other safety precautions. 8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as the brushing together of your clothes fabric or the lifting of your feet from a carpeted floor can generate static electricity (ESD) sufficient to damage an ES device.)
NOTE to CATV system Installer: This reminder is provided to call the CATV system installer's attention to article 820-22 of the NEC that provides guidelines for proper grounding and, in particular, specifies that the cable ground shall be connected to the grounding system of the building, as close to the point of cable entry as practical.
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 the powered color TV set, it is best to test the high voltage insulation. It is easy to do, and is just a good service precaution. BEFORE POWERING UP THE TV WITH THE BACK OFF (or on a test fixture), attach a clip lead to the CRT DAG ground and to a screwdriver blade that has a well insulated handle. After the TV is powered on and high voltage has developed, probe the anode lead with the blade, starting at the bottom of the High Voltage Transformer (flyback IFT). Move the blade to within two inches of the connector of the CRT. IF THERE IS AN ARC, YOU FOUND IT THE EASY WAY, WITHOUT GETTING A SHOCK! If there is an arc to the screwdriver blade, replace the High Voltage Transformer or the lead, (if removable) whichever is causing the problem.
PICTURE TUBE REPLACEMENT PROCEDURE
Note: a. b. c. Two (2) people are required to handle this picture tube. Safety Glasses must be worn during this procedure or whenever directly handling a picture tube. Take care in each step not to damage the CRT or the cabinet.
1. Remove the Chassis and the CRT Socket Board Module from the cabinet. 2. A furniture pad or blanket should be positioned on the floor to support only the CRT Face. This pad or blanket should be high enough to keep the CRT Face approximately 12 to 14 inches off the floor. 3. Using two people, place the cabinet in a front down position with the CRT Face on the pad or blanket. 4. Place padded blocks under each corner of the cabinet to keep it from rocking. 5. Remove the four screws, at the corners of the CRT. 6. With two people lowering the cabinet to the floor, leave the CRT elevated by the pad or blanket. Note: Take care not to grasp the neck of the CRT during this procedure, as it is extremely fragile. 7. Two (2) people may then lift the CRT from the cabinet. 8. Remove the degaussing coil from the defective CRT and mount on the replacement. Take care to maintain the exact shape and fit. To install the new CRT, reverse steps 1 to 7.
Technical Specifications and Connections
Note: Described specifications are valid for the whole product range.
Technical Specifications
Reception
Feature Tuning system Color systems Sound systems Data : PLL : NTSC M/N : BTSC non-DBX : BTSC DBX Channel selections IF picture carrier Aerial input A/V Connections : 181, full cable : 45.75 MHz : 75 Ohm, F-type : NTSC M/N
Miscellaneous
Audio output: Feature Stereo versions Data : 2x1W : 2x3W : 2x5W : 2 x 10 W Mono versions : 1x1W : 1x3W : 1x4W : 2x2W
Power supply: Feature Mains voltage range Mains frequency Data : 90 - 140 VAC : 60 Hz
Ambient conditions: Feature Temperature range Maximum humidity Data : +5 to +45 deg. C : 90 % R.H.
Power consumption: Feature Normal operation Data : from 81 W (20") : to 145 W (32") Standby : <3W
Connections
Front or Top Control / Front or Side Connections
Figure: Front/Top control and Side I/O
Audio / Video In Connector 1 2 3 4 Kind Video Audio - L Audio - R Headphone (3.5 mm) Value 1 Vpp / 75 Ohm 0.2 Vrms / 10 kOhm 0.2 Vrms / 10 kOhm 8 - 600 Ohm / 4 mW Symbol H kq kq ot
Rear Connections
Figure: Rear connections
Monitor Out Connector 1 2 3 Kind Video (CVBS) Audio - L Audio - R Value 1 Vpp / 75 Ohm 0.5 Vrms / 1 kOhm 0.5 Vrms / 1 kOhm Symbol jq jq jq
YUV In Connector 1 2 3 Kind Y U V Value 0.7 Vpp / 75 Ohm 0.7 Vpp / 75 Ohm 0.7 Vpp / 75 Ohm Symbol jq jq jq
AV1 In Connector 1 2 3 Kind Video (CVBS) Audio - L Audio - R Value 1 Vpp / 75 Ohm 0.5 Vrms / 10 kOhm 0.5 Vrms / 10 kOhm Symbol jq jq jq
AV2 In Connector 1 2 3 Kind Video (CVBS) Audio - L Audio - R Value 1 Vpp / 75 Ohm 0.5 Vrms / 10 kOhm 0.5 Vrms / 10 kOhm Symbol jq jq jq
AV2 In (SVHS) Connector 1 2 3 4 Kind Ground Ground Y C Value GND GND 1 Vpp / 75 Ohm 0.3 Vpp / 75 Ohm Symbol H H jq jq
Mechanical Instructions
Index of this chapter: 1. Set Disassembly 2. Service Positions 3. Assembly/Board Removal 4. Set Re-assembly
Note: Figures below may deviate slightly from the actual product, due to different set designs.
Set Disassembly
1. Remove all screws from the back cover (do not forget the screws that hold the rear connection panel). 2. Pull the back cover backward to remove it.
Service Positions
There are 2 service positions possible. Family Board without bracket (with integrated 'control'). 1. Disconnect the strain relief of the AC power cord. 2. Remove the mono carrier, by pushing the two center clips outward [1]. At the same time pull the panel away from the CRT [2]. 3. Disconnect the degaussing coil by removing the cable from (red) connector 0212. 4. Turn the panel 90 degrees counter clockwise [3]. 5. Flip the panel 90 degrees [4], with the components toward the CRT. 6. Turn the panel with its rear connections toward the CRT [5]. 7. Slide the metal heatsink (near the mains transformer 5520) underneath the right chassis bracket. This secures the panel [6].
Figure: Service position (1)
Family Board with bracket (with separate 'control'). 1. Disconnect the strain relief of the AC power cord. 2. Disconnect the degaussing coil by removing the cable from (red) connector 0212 [1]. 3. Remove the panel bracket from the bottom tray, by pulling it backward [2]. 4. Turn the chassis tray 90 degrees counter clockwise. 5. Move the panel to the left and flip it 90 degrees [3], with the components toward the CRT. 6. Turn the panel with the rear jack panel toward the CRT. 7. Place the hook of the tray in the hole in the cabinet bottom [4] and slide the panel backward to lock it in the service position.
Figure: Service position (2)
Assembly/Board Removal
Comb Filter Assembly/Board (if present)
You can remove the Comb Filter panel from the family board by disconnecting it from connector 1810 (located at the top of the AC power transformer 5520).
Top Control Assembly/Board (if present)
Figure: Top control removal
1. Remove the two screws (if present). 2. Pull the module down and backward (release it from the front hinge [M]). 3. Lift the board from its bracket while releasing the two fixation clamps. The board hinges on the other side.
Front Interface Assembly/Board (if present)
Figure: Front interface removal
1. You can remove the complete module from the bottom plate, by pulling the two clamps upward [1[ while sliding the module away from the CRT [2]. 2. Release the 2 clamps [3] at the side of the bracket, and lift the board out of the bracket (it hinges at one side).
DAF Assembly/Board (if present)
Figure: DAF panel removal
1. You can remove the complete module from the family board bracket, by pressing the clamp downward [1] while sliding the module toward the CRT [2]. 2. Release the 2 clamps [3] to lift the board out of the bracket [4].
Side Jack Panel Assembly/Board (if present)
Figure: Side jack panel removal
1. You can remove the complete side jack panel assembly by removing the 2 screws. 2. Release the 2 clamps to lift the board out of the bracket.
Set Re-assembly
Before replacing the back cover, check the following: 1. Be sure the AC power cord is mounted correctly in its guiding brackets. 2. Re-place the strain relief for the AC power cord into the cabinet. 3. Be sure all cables are returned to their original positions.
Service Modes, Error Codes and Fault Finding
Index: 1. Supporting Overviews 2. Test Points. 3. Service Modes. 4. Problems and Solving Tips (related to CSM). 5. ComPair. 6. Error Codes. 7. The Blinking LED Procedure. 8. Protections. 9. Repair Tips.
Supporting Overviews
· · · ·
Block Diagram I2C and Supply Voltage Diagram Test point Overview Mono Carrier Test point Overview CRT panel
Test Points
The chassis is equipped with test points printed on the circuit board assemblies. These test points refer to the functional blocks:
Table: Test point overview Test point A1-A2-A3-.... C1-C2-C3-.... F1-F2-F3-.... I1-I2-I3-.... L1-L2-L3-... P1-P2-P3-.... S1-S2-S3-.... V1-V2-V3-.... Circuit Audio processing Control Frame drive and output Tuner & IF Line drive and output Power supply Synchronization Video processing Diagram A8, A9 / A11 A7 A3 A4 A2 A1 A6 A5, B1
The numbering is in a logical sequence for diagnostics. Always start diagnosing within a functional block in the sequence of the relevant test points for that block. Perform measurements under the following conditions:
· · ·
Television set in Service Default Alignment Mode. Video input: Color bar signal. Audio input: 3 kHz left channel, 1 kHz right channel.
Service Modes
Service Default Alignment Mode (SDAM) offers several features for the service technician, while the Customer Service Mode (CSM) is used for communication between the servicer and the customer.
The L01.1U AC 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 L01.1U AC chassis. Minimum requirements for ComPair: a Pentium processor, a Windows OS, and a CDROM drive (see also "ComPair" section). Table: Software cluster overview UOC type UOC Special Stereo dBx, Comb Filter Stereo non-dBx
SW Cluster
SW name
Diversity Features 64K
L3LUS1
L01US2x.y TDA9587 ROM Size 64K
L3LUN1
L01UN4x.y TDA9588 ROM Size 55K
L3LUN2
L01UN5x.y TDA9577 ROM Size
Stereo non-dBx
Abbreviations in Software name: U = USA (NAFTA), M = Mono, N = Stereo non-dBx and S = Stereo dBx.
Service Default Alignment Mode (SDAM)
Purpose
· · · · · ·
To create a predefined setting for measurements to be made. To override software protections. To start the blinking LED procedure. To change option settings. To display / clear the error code buffer. To perform alignments.
Specifications
· · · · ·
Tuning frequency: 61.25 MHz (channel 3). Color system: NTSC M. All picture settings at 50% (brightness, color 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-favorite presets / channels. Auto-storage of personal presets. Auto user menu time-out. Auto Volume Leveling (AVL).
·
Run timer (maximum four digits displayed)
· · · ·
Software version Option settings Error buffer reading and erasing Software alignments
How to enter To enter SDAM, use one of the following methods:
·
Press the following key sequence on the remote control transmitter: '0 6 2 5 9 6' directly followed by the 'MENU' button (do not allow the display to time out between entries while keying the sequence).
·
Short jumper wires 9631 and 9641 on the family board (see Fig. 8-1) and apply AC power. Then press the power button (remove the short after start-up). Caution : Entering SDAM by shorting wires 9631 and 9641 will override the +8Vprotection. 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 (with the ComPair 'Tools' RC7150 Service Remote, it should be possible to enter SDAM via the ComPair interface).
After entering SDAM, the following screen is visible, with S in the upper right corner of the screen to indicate that the television is in Service Default Alignment Mode.
Figure: SDAM menu
Menu explanation 1. LLLL. This represents the run timer. The run timer counts normal operation hours, but does not count standby hours (maximum four digits displayed). 2. AAABCD-X.Y. This is the software identification of the main microprocessor:
§ § §
A = the project name (L01). B = the region: E= Europe, A= Asia Pacific, U= NAFTA, L= LATAM. C = the software diversity:
§ § § §
Europe: T = 1 page TXT, F = Full TXT, V = Voice control LATAM and NAFTA: N = Stereo non-dBx, S = Stereo dBx Asian Pacific: T = TXT, N = non TXT, C = NTSC ALL regions: M = mono, D = DVD, Q = Mk2
§ §
D = the language cluster number: X = the main software version number (updated with a major change that is incompatible with previous versions) Y = the sub software version number (updated with a minor change that is compatible with previous versions)
§
3. S. Indication of the service mode (S = SDAM = Service Default 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 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. AKB. Used to disable (0) or enable (1) the 'black current loop' (AKB = Auto Kine Bias). 9. Tuner. Used to align the tuner. See 'Tuner' in the Alignments section for a detailed description.
10. White Tone. Used to align the white tone. See 'White Tone' in the Alignments section for a detailed description. 11. Geometry. Used to align the geometry settings of the television. See 'Geometry' in the Alignments section for a detailed description. 12. Audio. No audio alignment is necessary for this television set.
How to navigate
·
In SDAM, 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 SDAM, when you press the MENU button, the set will switch to the normal user menus (with the SDAM mode still active in the background). To return to the SDAM menu press the STATUS/EXIT button.
·
When you press the MENU key in while in an SDAM submenu, you will return to the previous menu. In SDAM, press the STATUS/EXIT button to toggle the OSD (except the S which indicates SDAM) on and off, to prevent the OSD from interfering with measurements.
·
How to store SDAM settings To store settings changed in SDAM leave the top level SDAM 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 POWER button on the remote control transmitter or the television set. If you turn the television set off by removing the AC power (i.e., unplugging the television) without using the POWER button, the television set will remain in SDAM when AC power is re-applied, and the error buffer is not cleared.
Customer Service Mode (CSM)
Purpose The Customer Service Mode shows error codes and information on the TV operation settings. The servicer can instruct the customer to enter CSM by telephone and read off the information displayed. This helps the servicer 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: '1 2 3 6 5 4' (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:
Figure: CSM menu
Menu explanation 1. Indication of the service mode (CSM = Customer Service Mode). 2. Reserved item. 3. Software identification of the main microprocessor (see 'Service Default Alignment Mode' for an explanation) 4. Reserved item for P3C call centers (AKBS stands for A dvanced K nowledge B ase S ystems). 5. Indicates the type of TV system or whether or not the television is receiving an 'IDENT' signal on the selected source. If no 'IDENT' signal is detected, the display will read 'NOT TUNED' 6. Displays the last five errors detected in the error code buffer.
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.
·
iTV/Commercial Model Service Modes
Unlike mainstream L01.1U AC models, commercial L01.1U AC models do not use the Service Default Alignment Mode. Commercial Models use the Service Default Mode (SDM) and Service Alignment Mode (SAM). Service Alignment Mode (SAM) and Service Default Mode (SDM) offer several features for the service technician. To enter the SAM and SDM modes in iTV/commercial models, you must use a Philips ITV commercial setup transmitter, such as the RC2573GR or the RG4172BK). Part numbers for two common Philips ITV setup remotes are: RC2573GR : part number 4835 310 57554 RG4172BK : part number 3121 247 91041
Service Alignment Mode (SAM)
Purpose
·
To perform (software) alignments.
Specifications
·
Software alignments
How to enter To enter SAM, you must use a Philips ITV commercial setup transmitter (such as the RC2573GR or the RG4172BK). Use the following method to enter SAM:
·
First, place the setup remote in setup mode. To place the RG4172BK in setup mode, press TV SETUP; to place the RC2573GR in setup mode, set the switch
to the TV SETUP position. Then press the following key sequence on the remote control transmitter: '0 6 2 5 9 6' directly followed by the 'RECALL' button (do not allow the display to time out between entries while keying the sequence).
After entering SAM, a special menu screen is visible, with SAM in the upper right corner of the screen to indicate that the television is in Service Alignment Mode. SAM mode allows the servicer to perform all of the software alignments performed in the SDAM mode in mainstream models.
How to navigate in SAM
·
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, 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 RECALL button.
·
When you press the MENU key in while in an SAM submenu, you will return to the previous menu.
How to store SAM settings To store settings changed in SAM leave the top level SAM menu by using the POWER button on the remote control transmitter or the television set.
How to exit SAM Switch the set to STANDBY by pressing the POWER button on the remote control transmitter or the television set. If you turn the television set off by removing the AC power (i.e., unplugging the television) without using the POWER button, the television set will remain in SAM when AC power is reapplied.
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 change option settings. To display the error code buffer.
Specifications
· · · ·
Tuning frequency: 61.25 MHz (channel 3). Color system: NTSC M. All picture settings at 50% (brightness, color contrast, hue). Bass, treble and balance at 50 %; volume at 25 %.
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All service-unfriendly modes (if present) are disabled. The service unfriendly modes are:
§ § § § § § § §
Timer / Sleep timer. Child / parental lock. Blue mute. Auto shut off (when no 'IDENT' video signal is received for 15 minutes). Skipping of non-favorite presets / channels. Auto-storage of personal presets. Auto user menu time-out. Auto Volume Leveling (AVL).
· · · ·
Run timer (maximum four digits displayed) Software version Option settings Error buffer reading
How to enter To enter SDM, you must use a Philips ITV commercial setup transmitter (such as the RC2573GR or the RG4172BK). Use the following method to enter SDM:
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First, place the setup remote in setup mode. To place the the RG4172BK in setup mode, press TV SETUP; to place the the RC2573GR in setup mode, set the switch to the TV SETUP position. Then press the following key sequence on the remote control transmitter: '0 6 2 5 9 6' directly followed by the 'MENU' button (do not allow the display to time out between entries while keying the sequence).
After entering SDM, a special menu screen is visible, with SDM in the upper right corner of the screen to indicate that the television is in Service Default Mode.
SDM mode allows the servicer to perform all of the alignments, except software alignments, which are performed in the SDAM mode in mainstream models. In commercial models, software alignments are performed in SAM mode.
How to navigate
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In SDM, 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.
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With the MENU LEFT/RIGHT keys, it is possible to:
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Activate the selected menu item or option. Change the value of the selected menu item or option byte.
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In SDM, when you press the MENU button, the set will switch to the normal user menus (with the SDM mode still active in the background). To return to the SDM menu press the RECALL button.
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In SDM, press the RECALL button to toggle the OSD (except the SDM which indicates the set is in SDM mode) on and off, to prevent the OSD from interfering with measurements.
How to store SDM settings To store settings changed in SDM leave the top level SDM 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 POWER button on the remote control transmitter or the television set. If you turn the television set off by removing the AC power (i.e., unplugging the television) without using the POWER button, the television set will remain in SDM when AC power is reapplied, and the error buffer is not cleared.
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:
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The picture improves when you have press the AUTO PICTURE button on the remote control transmitter, or The picture improves when you enter the Customer Service Mode
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Then: 3. Press the AUTO PICTURE button on the remote control transmitter repeatedly (if necessary) to choose PERSONAL picture mode.
4. Press the MENU button on the remote control transmitter. This brings up the normal user menu. 5. In the normal user menu, use the MENU UP/DOWN keys to highlight the PICTURE sub menu (if necessary). 6. Press the MENU LEFT/RIGHT keys to enter the PICTURE sub menu. 7. Use the MENU UP/DOWN keys (if necessary) to select BRIGHTNESS. 8. Press the MENU LEFT/RIGHT keys to increase or decrease the BRIGHTNESS value. 9. Use the MENU UP/DOWN keys to select PICTURE. 10. Press the MENU LEFT/RIGHT keys to increase or decrease the PICTURE value. 11. Press the MENU button on the remote control transmitter twice to exit the user menu. 12. 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: 13. Press the AUTO PICTURE button on the remote control transmitter repeatedly (if necessary) to choose PERSONAL picture mode. 14. Press the MENU button on the remote control transmitter. This brings up the normal user menu. 15. In the normal user menu, use the MENU UP/DOWN keys to highlight the PICTURE sub menu (if necessary). 16. Press the MENU LEFT/RIGHT keys to enter the PICTURE sub menu.
17. Use the MENU UP/DOWN keys to select SHARPNESS. 18. Press the MENU LEFT key to decrease the SHARPNESS value. 19. Press the MENU button on the remote control transmitter twice to exit the user menu. 20. The new PERSONAL preference value is automatically stored.
Snowy picture 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). Check CSM line 5. If this line reads 'Not Tuned,' check the following:
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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 6, the Error Buffer line, will contain error number 10). Check the tuner and replace/repair the tuner if necessary.
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Black and white picture If:
o
The picture improves after you have pressed the AUTO PICTURE button on the remote control transmitter
Then: 25. Press the AUTO PICTURE button on the remote control transmitter repeatedly (if necessary) to choose PERSONAL picture mode. 26. Press the MENU button on the remote control transmitter. This brings up the normal user menu. 27. In the normal user menu, use the MENU UP/DOWN keys to highlight the PICTURE sub menu (if necessary). 28. Press the MENU LEFT/RIGHT keys to enter the PICTURE sub menu. 29. Use the MENU UP/DOWN keys to select COLOR. 30. Press the MENU RIGHT key to increase the COLOR value. 31. Press the MENU button on the remote control transmitter twice to exit the user menu. 32. The new PERSONAL preference value is automatically stored.
Menu text not sharp enough If:
o
The picture improves after you have pressed the AUTO PICTURE button on the remote control transmitter.
Then: 34. Press the AUTO PICTURE button on the remote control transmitter repeatedly (if necessary) to choose PERSONAL picture mode. 35. Press the MENU button on the remote control transmitter. This brings up the normal user menu. 36. In the normal user menu, use the MENU UP/DOWN keys to highlight the PICTURE sub menu (if necessary).
37. Press the MENU LEFT/RIGHT keys to enter the PICTURE sub menu. 38. Use the MENU UP/DOWN keys to select PICTURE. 39. Press the MENU LEFT key to decrease the PICTURE value. 40. Press the MENU button on the remote control transmitter twice to exit the user menu. 41. The new PERSONAL preference value is automatically stored.
ComPair
Introduction
ComPair (Computer Aided Repair) is a service tool for Philips Consumer Electronics products. ComPair is a further development of the European DST (special remote control transmitter for Service), which allows faster and more accurate diagnostics. ComPair has three big advantages:
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ComPair helps you to 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 I2 C level) and is therefore capable of accurately indicating problem areas. You do not have to know anything about I2 C 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 Force electronic manual of the L01.1U AC chassis, schematics and CBAs are only a mouse-click away.
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Specifications
ComPair consists of a Windows based faultfinding program and an interface box between PC and the product. The ComPair interface box is connected to the PC via a serial or RS232 cable. In case of the L01 chassis, the ComPair interface box and the TV communicate via a bi-directional service cable via the service connector (connector 0267). The ComPair faultfinding program is able to determine the problem of the television set. ComPair can gather diagnostic information in two ways:
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Automatic (by communication with the television): ComPair can automatically read the contents of the entire error buffer. Diagnosis is done on I2 C level. ComPair can access the I2 C bus of the television. ComPair can send and receive I2 C commands to the microprocessor of the television. In this way, it is possible for ComPair to communicate (read and write) to devices on the I2 C busses of the television set. Manually (by asking questions to the servicer): Automatic diagnosis is only possible if the microprocessor of the television is working correctly, and only to a certain extent. When this is not the case, ComPair will guide you through the faultfinding tree by asking you questions (for example; Does the screen give a picture? Click on the correct answer: YES / NO) and showing you examples (for example; Measure test-point I7 and click on the correct oscillogram you see on the oscilloscope). You can answer by clicking on a link (for example, text or a waveform picture) that will bring you to the next step in the faultfinding process.
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By a combination of automatic diagnostics and an interactive question and 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:
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Uploading or downloading of presets. Management of preset lists. If both ComPair and the Force electronic service manual are installed, all the schematics and CBAs of the television set are available by clicking on the appropriate hyperlink. Example: Measure the DC-voltage on capacitor C2568 (Schematic/Panel) at the family board.
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Click on the 'Panel' hyperlink to automatically show the CBA with a highlighted capacitor C2568. Click on the 'Schematic' hyperlink to automatically show the electronic position of the highlighted capacitor.
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How To Connect ComPair
51. First, install the ComPair Browser software on your PC (see the Quick Reference Card for installation instructions). 52. 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. 53. Connect the AC power adapter to the supply connector (marked 'POWER 9V DC') on the ComPair interface. 54. Switch the ComPair interface 'off'. 55. Switch the television set 'off' (and remove the AC power). 56. Connect the ComPair interface cable between the connector on the rear side of the ComPair interface (marked 'I2 C') and the ComPair connector on the family board (connector 0267).
57. Plug the AC power adapter in the AC power outlet and switch the ComPair interface `on'. The green and red LEDs light up together. The red LED turns off after approximately 1 second, while the green LED remains lit. 58. Start the ComPair program and read the 'introduction' chapter.
Figure: ComPair connection
How To Order
ComPair order codes for NAFTA :
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ComPair Software: ST4191. ComPair Interface Box: 4822 727 21631. AC Adapter: T405-ND. ComPair Quick Start Guide: ST4190. ComPair interface cable: 3122 785 90004.
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:
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On screen via the SDAM (if you have a picture). Examples:
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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
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Via the blinking LED procedure (when you have no picture). See 'The Blinking LED Procedure'. Via ComPair.
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How To Clear The Error Buffer
The error code buffer is cleared in the following cases:
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By using the CLEAR command in the SDAM menu:
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To enter SDAM, 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).
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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'
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If the contents of the error buffer have not changed for 50 hours, the error buffer resets automatically.
Note: If you exit SDAM by disconnecting the AC power from the television set, the error buffer is not reset.
Error Codes
In case of non-intermittent faults, write down the errors present in the error buffer and clear the error buffer before you begin the repair. This ensures that old error codes are no longer present. If possible, check the entire contents of the error buffer. In some situations, an error code is only the result of another error and not the actual cause of the problem (for example, a fault in the protection detection circuitry can also lead to a protection).
Table: Error code overview Error description No Error X-Ray 1 Protection (USA) 7460, 2 Horizontal Protection 7461, 7462, 7463, 6467 Vertical Protection MAP I 2 C 4 MSP34X5TDA9853 identification error POR 3.3V / 8V 7200, Protection General I 2 C bus error Power Down 7 (over current) prot. E/W Protection (Large Screen) 7400, 3405, 3406, 3400 A2 7560, 7480 7200, 3624, 3625 7831, 7861 7861, VlotAux +13v A9 or A11 A1, A2. A5, A6, A7 A7 A2, A3 A2 2465, 7460 A2
Error Device 0 -
Check item Diagram
3
TDA8359TDA9302
5
TDA95XX
6
I 2 C bus
8
-
Error Device
Error description NVM I 2 C
Check item Diagram 7602, 3611, 3603, 3604 A7
9
M24C08
identification error Tuner I 2 C
10
Tuner
identification error
1000, 7482 A2, A4
11
TDA6107/8
Black current
7330, RGB
loop protection amps, CRT MAP I 2 C
B1, B2
12
M65669
identification error (USA) DVD I 2 C
7803
P
DVD Interface module
14
DVD Loader
identification error
DVD Loader
Note: Error 7 is not applicable.
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 SDAM is entered, the LED will blink the contents of the error-buffer:
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1-14 short blinks (indicates error number 1-14), When all the error-codes are displayed, the sequence finishes with an 'on' LED blink of 1.5 seconds, The sequence starts again.
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Example of error buffer: 12 9 6 0 0 After entering SDAM, the following occurs:
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1 long 'on' 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 'on' blink of 1.5 seconds to finish the sequence, The sequence starts again at 12 short blinks.
Protections
If a fault situation is detected, an error code will be generated; and, if necessary, the television set will go into protection mode. Blinking of the red LED at a frequency of 3 Hz indicates the protection mode. In some error cases, the microprocessor does not put the set in protection mode. The error codes of the error buffer and the blinking LED procedure can be read via the Service Default Alignment Menu (SDAM), or via ComPair. To get a quick diagnosis the chassis has two service modes implemented:
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The Customer Service Mode (CSM). The Service Default Alignment Mode (SDAM).
For a detailed description, see the "Customer Service Mode" and "Service Default Alignment Mode" sections.
Repair Tips
Below some failure symptoms are given, followed by a repair tip.
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Set is dead and makes hiccupping sound. 'Main Power Supply' is available. Hiccupping stops when L5561 is de-soldered, meaning that problem is in the 'Main Power Supply' line. No output voltages at LOT, no horizontal deflection. Reason: line transistor 7460 is defective. Set is dead, and makes no sound. Check power supply IC 7520. Result: voltage at pins 1, 3, 4, 5 and 6 are about 180 V and pin 8 is 0 V. The reason why the voltage on these pins is so high is that the output driver (pin 6) has an open load. That is why MOSFET 7521 is not able to switch. Reason: feedback resistor 3523 is defective. Caution : Be careful measuring the gate of 7521: circuitry is very high ohmic and can easily be damaged! Set is in hiccup mode and shuts down after 8 seconds. The blinking LED (set is in SDAM mode) indicates error 5. As it is unlikely that the microprocessor 'POR' and '+8V protection' happen at the same time, measure the '+8V' supply. If this voltage is missing, check transistor 7480. Set is in non-stop hiccup mode. Set is in over-current mode; check the secondary sensing (opto coupler 7515) and the 'Main Power Supply' voltage. Signal 'Stdby_con' must be logic low under normal operation conditions and goes to high (3.3 V) under standby and fault conditions. Set turns on, but without picture and sound. The screen shows snow, but OSD and other menus are okay. Blinking LED procedure indicates error 11, so problem is expected in the tuner (part reference number 1000). Check presence of supply voltages. 'Vlotaux+5V' voltages at pin 5 and 7 are okay; 'VT_supply' at pin 9 is missing. Conclusion: resistor 3460 is defective.
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o
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Set turns on, but with a half screen at the bottom. Sound is okay. Blinking LED (set is in SDAM mode) indicates error 3. Check 'Vlotaux+11V' and '+50V'. If they are okay, problem is expected in the vertical amplifier IC 7471. Use an oscilloscope to measure the waveform on pin 17 of the UOC. Also, measure the waveform at pin 1 of IC 7471. If the signal there is missing, a defective resistor R3244 caused the problem.
Alignments
Index of this chapter: 1. General Alignment Conditions 2. Hardware Alignments 3. Software Alignments and Settings
Note: The Service Default Alignment Mode (SDAM) is described in the "Service Modes, Error Codes and Fault Finding" section. SDAM menu navigation is performed by using the MENU UP, MENU DOWN, MENU LEFT, and MENU RIGHT keys of the remote control transmitter.
General Alignment Conditions
Perform all electrical adjustments under the following conditions:
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AC voltage and frequency: 110 V (± 10 %), 60 Hz (± 5 %). Connect the television set to the AC power via an isolation transformer. Allow the television set to warm up for approximately 20 minutes. Measure the voltages and waveforms in relation to chassis ground (with the exception of the voltages on the primary side of the power supply). Never use heatsinks as ground.
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Test probe: Ri > 10 MOhm; Ci < 2.5 pF. Use an isolated trimmer/screwdriver to perform the alignments.
Hardware Alignments
Figure: Family board (top view)
Vg2 Adjustment
1. To enter SDAM, press the following key sequence on the remote control transmitter: 0 6 2 5 9 6 directly followed by the MENU button (do not allow the display to time out between entries while keying the sequence). 2. Use the MENU UP/DOWN keys to highlight the WHITE TONE sub menu. 3. Press the MENU LEFT or MENU RIGHT key to enter the WHITE TONE sub menu. 4. In the WHITE TONE sub menu, press the MENU UP/DOWN keys to select NORMAL RED, NORMAL GREEN, or NORMAL BLUE.
5. Use the MENU LEFT/RIGHT keys to set the values of NORMAL RED, NORMAL GREEN and NORMAL BLUE to '40'. 6. Press the MENU button twice to enter the normal user menu. 7. In the normal user menu, use the MENU UP/DOWN keys to highlight the PICTURE sub menu (if necessary). 8. Press the MENU LEFT/RIGHT keys to enter the PICTURE sub menu. 9. Use the MENU UP/DOWN keys to select PICTURE. Be sure to record the current value of PICTURE. 10. Use the MENU LEFT/RIGHT keys to set the value of PICTURE to '0'. 11. Use the MENU UP/DOWN keys to select BRIGHTNESS. Be sure to record the current value of BRIGHTNESS. 12. Use the MENU LEFT/RIGHT keys to set the value of BRIGHTNESS to minimum (OSD just visible in a dark room). 13. Press the MENU button twice to return to the top level SDAM menu. 14. Press the STATUS/EXIT button to hide the SDAM onscreen display. 15. Connect the RF output of a video pattern generator to the antenna input. 16. Input a 'black picture' test pattern to the television set. 17. Set the oscilloscope to 50 V/div and the time base to 0.2 milliseconds (external triggering on the vertical pulse). 18. Ground the scope at the CRT panel and connect a 10:1 probe to one of the cathodes of the picture tube socket (see schematic diagram B). 19. Measure the' cut off pulse' during the first full line after the frame blanking (see Fig. 8-2). You will see two pulses, one being the 'cut off pulse' and the other being the 'white drive pulse'. Choose the one with the lowest value; this is the 'cut off pulse'. 20. Select the cathode with the highest VDC value for the alignment. Adjust the Vcutoff of this gun with the SCREEN potentiometer (see Fig. 8-1) on the LOT to the correct value (see table 8-1). 21. Press the STATUS/EXIT button to display the SDAM onscreen display. 22. Press the MENU button to enter the normal user menu.
23. In the normal user menu, use the MENU UP/DOWN keys to highlight the PICTURE sub menu (if necessary). 24. Press the MENU LEFT/RIGHT keys to enter the PICTURE sub menu. 25. Use the MENU UP/DOWN keys to select PICTURE. 26. Use the MENU LEFT/RIGHT keys to reset the value of PICTURE to the original value. 27. Use the MENU UP/DOWN keys to select BRIGHTNESS. 28. Use the MENU LEFT/RIGHT keys to reset the value of BRIGHTNESS to the original value. 29. Press the MENU button twice to return to the top level SDAM menu. 30. Use the POWER button on the remote control transmitter or the POWER button on the television set to turn off the television set. This will save the changes made in SDAM.
Figure: Vcutoff
Table: Vg2 cut-off point (Large Screen) Screen Size (RF= Real Flat) 20RF Matsushita 20RF Samsung 20RF LG Philips 25V Curved Face 27V Curved Face 27RF 29RF LG Philips 20RF Philips 27RF Samsung 32RF 26 Wide Screen RF 30 Wide Screen RF RF = Real Flat V = (Visible) Diagonal Screen Measurement of Phosphor +160 V +/- 4 V +155 V +/- 4 V +145 V +/- 4 V Cut-off point (V)
Focusing
1. Connect the RF output of a video pattern generator to the antenna input. 2. Input a circle or crosshatch test pattern to the television set. 3. Press the AUTO PICTURE button on the remote control transmitter repeatedly to choose PERSONAL or MOVIES picture mode. 4. Adjust the FOCUS potentiometer (see Fig. 8-1) until the vertical lines near the left and right sides of the screen, and near the horizontal center of the screen, are at minimum width without visible haze.
Software Alignments and Settings
The following options are performed in the Service Default Alignment Mode (SDAM). SDAM is described in the 'Service Modes, Error Codes and Fault Finding' section. The following alignments are explained: 1. OPTIONS 2. TUNER 3. WHITE TONE 4. GEOMETRY 5. AUDIO
Options
Options are used to control the presence or absence of certain features and hardware.
How to change an Option Byte An Option Byte represents a number of different options. Changing these bytes directly makes it possible to set all options very quickly. All options are controlled via seven option bytes. Note: Each option byte controls several features of the television set; therefore, before changing option byte information, it is important to record the current option byte values. This ensures that the television features can be restored to the original settings, if necessary.
1. To enter SDAM, press the following key sequence on the remote control transmitter: 0 6 2 5 9 6 directly followed by the MENU button (do not allow the display to time out between entries while keying the sequence).
2. Use the MENU UP/DOWN keys to highlight the OPTIONS sub menu. 3. Press the MENU LEFT or MENU RIGHT key to enter the OPTIONS sub menu. 4. In the OPTIONS sub menu, press the MENU UP/DOWN keys to select 'OP 1' through 'OP 7'. 5. Use the number keys on the remote control transmitter to enter a new value for the selected option byte. The value must be entered as a three-digit value (for example, '4' would be entered as '0 0 4'). 6. The selected value must be between '0' and '255'. 7. When all desired changes to the option bytes are made, press the MENU button to return to the top level SDAM menu. This will save changes to the option byte settings. 8. To ensure the option byte changes take effect: Turn the television set OFF by using the POWER button on the remote control transmitter or the local keyboard. Disconnect the television set from AC power for at least ten seconds. Reconnect the television set to AC power. Turn the television set ON by using the POWER button on the remote control transmitter or the local keyboard.
Figure: Options menu
How to change iTV Option Bytes An Option Byte represents a number of different options. Changing these bytes directly makes it possible to set all options very quickly. All options are controlled via five option bytes.
Note: Each option byte controls several features of the television set; therefore, before changing option byte information, it is important to record the current option byte values. This ensures that the television features can be restored to the original settings, if necessary.
1. To enter SDM, you must use a Philips ITV commercial setup transmitter (such as the RC2573GR or the RG4172BK). Use the following method to enter SDM: First, place the setup remote in setup mode. To place the RG4172BK in setup mode, press TV SETUP; to place the RC2573GR in setup mode, set the switch to the TV SETUP position. Then press the following key sequence on the remote control transmitter: '0 6 2 5 9 6' directly followed by the 'MENU' button (do not allow the display to time out between entries while keying the sequence). 2. Use the MENU UP/DOWN keys to scroll through the OPTIONS until you reach OB1 through OB5. 3. Use the number keys on the remote control transmitter to enter a new value for the selected option byte. The value must be entered as a three-digit value (for example, '4' would be entered as '0 0 4'). 4. The selected value must be between '0' and '255'. 5. When all desired changes to the option bytes are made, press the MENU button to return to the top level SDM menu. This will save changes to the option byte settings. 6. To ensure the option byte changes take effect: Turn the television set OFF by using the POWER button on the remote control transmitter or the local keyboard. Disconnect the television set from AC power for at least ten seconds. Reconnect the television set to AC power. Turn the television set ON by using the POWER button on the remote control transmitter or the local keyboard.
Option Code Tables Table: Option code settings Model Number 20DV693R01 20DV693R02 20MS334R37 20PT633R/37 20PT643F/35R 20PT643R01 20PT653R/37 21PT6331/44R 21PT633R/85C 21PT6431/44R 21PT643R/85C 24PT633F/35R 24PT633R/37 25PT533S/37C 25PT633R/85C 27DV693R37A 27MS3404/17 27MS4504/17 27PT541S37A 27PT543F35A 27PT543S/37A OP1 OP2 OP3 OP4 OP5 OP6 OP7 0 0 0 0 64 0 0 16 0 16 0 64 0 0 0 0 0 0 0 64 0 23 23 23 23 23 23 23 23 23 23 23 23 23 23 23 23 23 23 23 23 23 65 65 65 1 65 1 1 65 1 65 1 193 129 1 129 209 65 193 65 65 1 162 162 1 1 1 1 1 1 1 1 1 1 1 1 1 162 1 1 1 1 1 252 252 144 144 236 236 252 144 144 236 236 252 252 252 252 252 252 252 252 252 252 153 153 88 152 152 152 152 152 152 152 152 152 152 152 152 153 152 152 152 152 152 64 80 0 0 0 0 0 0 0 0 0 0 0 0 0 64 0 0 0 0 0
Model Number 27PT563S37A 27PT633R/37C 27PT643F35A 27PT643R/37C 27PT643R/37A 27PT643R/97A 27PT663R/37A 27PT663R/37C 29DV6931/85R 29PT543S/44A 29PT543S/85A 29PT563S/85A 29PT633R/85A 29PT633R/85C 29PT643R85A 29PT6631/44R 29PT663R/85A 29PT663R/85C 29PT663S85A 30DV693R37A 30DV693R37C 30PW633F35A 30PW633R37A 30PW633R37C
OP1 OP2 OP3 OP4 OP5 OP6 OP7 0 0 64 0 0 0 0 0 16 0 0 0 0 0 16 16 0 0 16 0 0 0 0 0 23 23 23 23 23 23 23 23 23 23 23 23 23 23 23 23 23 23 23 31 31 31 31 31 65 145 193 193 193 193 145 145 209 1 1 1 129 129 193 209 145 145 209 149 149 149 149 149 162 162 1 1 1 1 162 162 162 1 1 162 1 1 1 162 162 162 162 162 162 162 162 162 252 252 252 252 252 252 252 252 252 252 252 252 252 252 252 252 252 252 252 252 252 252 252 252 153 153 152 152 152 152 153 153 153 152 152 153 152 152 152 153 153 153 153 153 153 153 153 153 80 80 0 0 0 0 80 80 64 0 0 80 0 0 0 80 80 80 80 64 64 80 80 80
Model Number 32PT541S37G 32PT543S/37A 32PT543S/37G 32PT553S/37A 32PT553S/37G 32PT563S37A 32PT563S37G 32PT633R/37D 32PT663R/37A MS3252S431 MS3652S427
OP1 OP2 OP3 OP4 OP5 OP6 OP7 0 0 0 0 0 0 0 0 0 0 0 23 23 23 23 23 23 23 31 31 23 23 193 129 129 129 129 193 193 145 145 129 129 1 1 1 1 1 162 162 162 162 1 1 252 252 252 252 252 252 252 252 252 189 189 152 152 152 152 152 153 153 153 153 88 88 0 0 0 64 64 80 80 80 80 0 0
Table: Option code settings for iTV/Commercial models Model Number 25LT220L/17 25LT421L/17 25ST220L/17 27LT220L/17 27LT621L/17 27ST110P/35 27ST220L/17 27ST230P/35 27ST240P/35 27ST420L/17 OP1 212 196 212 212 198 212 212 212 212 196 OP2 16 252 16 16 252 16 16 16 16 220 OP3 2 3 2 2 3 2 2 2 2 3 OP4 65 33 67 65 33 67 67 67 67 35 OP5 168 172 8 168 172 8 8 8 8 12
Model Number 27ST421L/17 32LT621L/17 32ST220P/17 32ST230P/35 36ST220P/35 36ST230P/35
OP1 196 198 198 198 198 198
OP2 220 252 220 220 220 220
OP3 3 11 11 11 11 11
OP4 35 41 43 43 43 43
OP5 12 252 12 12 12 12
Tuner
Note: Described alignments are only necessary when the NVM (part reference number 7602) is replaced. IF-PLL This adjustment is auto-aligned. Therefore, no action is required.
AGC (AGC take over point) 1. Connect the RF output of a video pattern generator to the antenna input. 2. Input a color bar test pattern to the television set. 3. Set the amplitude of the video pattern generator to 10 mV and set the frequency to 61.25 MHz (channel 3). 4. Connect a DC multimeter to pin 1 of the tuner (item 1000 on the main chassis). 5. To enter SDAM, press the following key sequence on the remote control transmitter: 0 6 2 5 9 6 directly followed by the MENU button (do not allow the display to time out between entries while keying the sequence).
6. Use the MENU UP/DOWN keys to highlight the TUNER sub menu. 7. Press the MENU LEFT/RIGHT keys to enter the TUNER sub menu. 8. Use the MENU UP/DOWN keys to select AGC. 9. Use the MENU LEFT/RIGHT keys to adjust the AGC value (default value is 27) until the DC-voltage at pin 1 of the tuner lies between 3.8 V and 2.3 V. 10. Press the MENU button to return to the top level SDAM menu. 11. To ensure the AGC change takes effect:
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Turn the television set 'off' by using the 'POWER' button on the remote control transmitter or the local keyboard. Disconnect the television set from AC power for at least ten seconds. Reconnect