PTV910.pdf part of Philips PTV910 PTV910.part1.rar, 199 page service manual for Philips color TV (NTSC) model number PTV910 & PTV914 with chassis 7615 text manual preview

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Philips Consumer Electronics Technical Service Data
Service and Quality Service Publications Dept. One Philips Drive P.O. Box 14810 Knoxville, TN 37914 First Published: 05-17-2001 Rev. Date: 09-30-2004 Print Date: 09-30-2004

Safety Notes
IMPORTANT SAFETY NOTICE WARNING SAFETY CHECKS - FIRE AND SHOCK HAZARD - IMPLOSION - X-RADIATION - LEAKAGE CURRENT COLD CHECK - LEAKAGE CURRENT HOT CHECK - PICTURE TUBE REPLACEMENT - PARTS REPLACEMENT TV SAFETY NOTES SAFETY PRECAUTIONS FOR TV CIRCUITS PRECAUTIONS DURING SERVICE SAFETY CHECK AFTER SERVICING PRODUCT SAFETY GUIDELINES FOR ALL PRODUCTS PREVENTION OF ELECTROSTATIC DISCHARGE (ESD)

REFER TO SAFETY GUIDELINES SAFETY NOTICE: ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE CHASSIS AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES. CAUTION: USE A SEPARATE ISOLATION TRANSFORMER FOR THIS UNIT WHEN SERVICING
© Philips Electronics North America Corporation Visit our World Wide Web Site at http://www.forceonline.com

GENERAL SAFETY NOTES 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 ____ _ ____ _ ____ _ ____

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

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 ____ _ ____ _ ____ _ ____

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.

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, 1OW 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 0.5milliamp. 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 120V AC 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 0.5 milliamp. Reverse the instrument power cord plug in the outlet and repeat the test. See graphic below.

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 X-radiation 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

TV SAFETY NOTES
SAFETY CHECKS IMPLOSION

X-RADIATION 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.

TV-VCR COMBI SAFETY NOTES
IMPORTANT SAFETY PRECAUTIONS
Prior to shipment from the factory, our products are strictly inspected for recognized product safety and electrical codes of the countries in which they are to be sold. However, in order to maintain such compliance, it is equally important to implement the following precautions when a set is being serviced.

SAFETY PRECAUTIONS FOR TV CIRCUITS
1. Before returning an instrument to the customer, always make a safety check of the entire instrument, including, but not limited to, the following items: a. Be sure that no built-in protective devices are defective or have been defeated during servicing. (1) Protective shields are provided on this chassis to protect both the technician and the customer. Correctly replace all missing protective shields, including any removed for servicing convenience. (2) When reinstalling the chassis and/or other assembly in the cabinet, be sure to put back in place all protective devices, including but not limited to, nonmetallic control knobs, insulating fishpapers, adjustment and compartment covers/shields, and isolation resistor/capacitor networks. Do not operate this instrument or permit it to be operated without all protective devices correctly installed and functioning. Servicers who defeat safety features or fail to perform safety checks may be liable for any resulting damage. b. Be sure that there are no cabinet openings through which an adult or child might be able to insert their fingers and contact a hazardous voltage. Such openings include, but are not limited to, (1) spacing between the picture tube and the cabinet mask, (2) excessively wide cabinet ventilation slots, and (3) an improperly fitted and/or incorrectly secured cabinet back cover. c. Do a LEAKAGE CURRENT CHECK ANY MEASUREMENTS NOT WITHIN THE LIMITS SPECIFIED HEREIN INDICATE A POTENTIAL SHOCK HAZARD THAT MUST BE ELIMINATED BEFORE RETURNING THE INSTRUMENT TO THE CUSTOMER OR BEFORE CONNECTING THE ANTENNA OR ACCESSORIES.

d. X-Radiation and High Voltage Limits - Because the picture tube is the primary potential source of X-radiation in solid-state TV receivers, it is specially constructed to prohibit X-radiation emissions. For continued X-radiation protection, the replacement picture tube must be the same type as the original. Also, because the picture tube shields and mounting hardware perform an X-radiation protection function, they must be correctly in place. High voltage must be measured each time servicing is performed that involves B+, horizontal deflection or high voltage. Correct operation of the X-radiation protection circuits also must be reconfirmed each time they are serviced. (X-radiation protection circuits also may be called "horizontal disable" or "hold down.") Read and apply the high voltage limits and, if the chassis is so equipped, the X-radiation protection circuit specifications given on instrument labels and in the Product Safety & X-Radiation Warning note on the service data chassis schematic. High voltage is maintained within specified limits by close tolerance safety-related components/adjustments in the high-voltage circuit. If high voltage exceeds specified limits, check each component specified on the chassis schematic and take corrective action. 2. Read and comply with all caution and safety-related notes on or inside the receiver cabinet, on the receiver chassis, or on the picture tube. 3. Design Alteration Warning - Do not alter or add to the mechanical or electrical design of this TV receiver. Design alterations and additions, including, but not limited to circuit modifications and the addition of items such as auxiliary audio and/or video output connections, might alter the safety characteristics of this receiver and create a hazard to the user. Any design alterations or additions will void the manufacturer's warranty and may make you, the servicer, responsible for personal injury or property damage resulting therefrom. 4. Picture Tube Implosion Protection Warning - The picture tube in this receiver employs integral implosion protection. For continued implosion protection, replace the picture tube only with one of the same type number. Do not remove, install, or otherwise handle the picture tube in any manner without first putting on shatterproof goggles equipped with side shields. People not so equipped must be kept safely away while picture tubes are handled. Keep the picture tube away from your body. Do not handle the picture tube by its neck. Some "in-line" picture tubes are equipped with a permanently attached deflection yoke; because of potential hazard, do not try to remove such "permanently attached" yokes from the picture tube. 5. Hot Chassis Warning a. Some TV receiver chassis are electrically connected directly to one conductor of the ac power cord and may be serviced safely without an isolation transformer only if the ac power plug is inserted so that the chassis is connected to the ground side of the ac power source. To confirm that the ac power plug is inserted correctly, with an ac voltmeter, measure between the chassis and a known earth ground. If a voltage reading in excess of 1.OV is obtained, remove and reinsert the ac power plug in the opposite polarity and again measure the voltage potential between the chassis and a known earth ground. b. Some TV receiver chassis normally have 85Vac (RMS) between chassis and earth ground regardless of the ac plug polarity. This chassis can be safety-serviced only with an isolation transformer inserted in the power line between the receiver and the ac power source, for both personnel and test equipment protection. Some TV receiver chassis have a secondary ground system in addition to the main chassis ground. This secondary ground system is not isolated from the ac power line. The two ground systems are electrically separated by insulation material that must not be defeated or altered. 6. Observe original lead dress. Take extra care to assure correct lead dress in the following areas: a. near sharp edges, b. near thermally hot parts - be sure that leads and components do not touch

thermally hot parts, c. the ac supply, d. high voltage, and e. antenna wiring. Always inspect in all areas for pinched, out of place, or frayed wiring. Check ac power cord for damage. 7. Components, parts, and/or wiring that appear to have overheated or are otherwise damaged should be replaced with components, parts, or wiring that meet original specifications. Additionally, determine the cause of overheating and/or damage and, if necessary, take corrective action to remove any potential safety hazard.

PRECAUTIONS DURING SERVICE
A. Parts identified by the symbol are critical for safety. Replace only with part number specified. B. In addition to safety, other parts and assemblies are specified for conformance with regulations applying to spurious radiation. These must also be replaced only with specified replacements. Examples: RF converters, RF cables, noise blocking capacitors, and noise blocking filters, etc. C. Use specified internal wiring. Note especially: 1) Wires covered with PVC tubing 2) Double insulated wires 3) High voltage leads D. Use specified insulating materials for hazardous live parts. Note especially: 1) Insulation Tape 2) PVC tubing 3) Spacers 4) Insulators for transistors E. When replacing ac primary side components (transformers, power cord, etc.), wrap ends of wires securely about the terminals before soldering. F. Observe that the wires do not contact heat producing parts (heatsinks, oxide metal film resistors, fusible resistors, etc.) G. Check that replaced wires do not contact sharp edged or pointed parts. H. When a power cord has been replaced, check that 10-15 kg of force in any direction will not loosen it. I. Also check areas surrounding repaired locations. J. Use care that foreign objects (screws, solder droplets, etc.) do not remain inside the set. K. Crimp type wire connector When replacing the power transformer in sets where the connections between the power cord and power transformer primary lead wires are performed using crimp type connectors, in order to prevent shock hazards, perform carefully and precisely the following steps. Replacement procedure 1) Remove the old connector by cutting the wires at a point close to the connector. Important: Do not re-use a connector (discard it).

2) Strip about 15 mm of the insulation from the ends of the wires. If the wires are stranded, twist the strands to avoid frayed conductors. 3) Align the lengths of the wires to be connected. Insert the wires fully into the connector. 4) Use the crimping tool to crimp the metal sleeve at the center position. Be sure to crimp fully to the complete closure of the tool. L. When connecting or disconnecting the VCR connectors, first, disconnect the ac plug from the ac supply socket.

SAFETY CHECK AFTER SERVICING
Examine the area surrounding the repaired location for damage or deterioration. Observe that screws, parts and wires have been returned to original positions. Afterwards, perform the following tests and confirm the specified values in order to verify compliance with safety standards. 1. Clearance Distance When replacing primary circuit components, confirm specified clearance distance (d) and (d') between soldered terminals, and between terminals and surrounding metallic parts. (See graphic bllow) Table 1 : Ratings for selected area

AC Line Voltage

Region
USA or CANADA

Clearance Distance (d) (d')
> 3.2 mm (0.126 inches)

110 to 130 V

Note: This table is unofficial and for reference only. Be sure to confirm the precise values.

2. LEAKAGE CURRENT CHECKS

VCR SAFETY NOTES FIRE & SHOCK HAZARD (VCR)
1. Be sure that all components are positioned in such a way to avoid possibility of shorts to adjacent components. This is especially important on those chassis which are transported to and from the repair shop. 2. Always replace all protective devices such as insulators and barriers after working on a set. 3. Check for damaged insulation on wires including the ac cord. 4. Check across-the-line components for damage and replace if necessary. 5. After re-assembly of the unit, always perform an ac leakage test on the exposed metallic parts of the cabinet such as the knobs, antenna terminals, etc. to be sure the set is safe to operate without danger of electrical shock. Do not use a line isolation transformer during this test. Use an ac voltmeter having 5000 ohms per volt or more sensitivity in the following manner: Connect a 1500 ohm 10 wan resistor, paralleled by 0.15 MFD ac type capacitor, between a known good earth ground (water pipe, conduit, etc.) and the exposed metallic parts, one at a time. Measure the ac voltage across the combination 1500 ohm resistor and 0.15 MFD capacitor. Reverse the ac plug on the set and repeat ac voltage measurements again for each exposed metallic part. Voltage measured must not exceed O.6 volts R.M.S. This corresponds to 0.4 milliamp ac. Any value exceeding this limit constitutes a potential shock hazard and must be corrected immediately.

GENERAL
Power Supply-This receiver is designed for operation on 120 Volts, 6OHz alternating current (ac) only. Never connect to a supply having a different frequency or voltage.

IMPORTANT NOTICE
This device employs many circuits, components, and mechanical parts designed for protection against fire, shock and RF interference. For continued safety any servicing should be performed by qualified personnel and exact replacement parts should be used. Under no circumstances should the original design be altered.

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.

7615 DFU Information

Directions For Use (DFU)
For Customer Operating Instructions, please visit our web site: www.p4c.philips.com.

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A10 PTV ADJUSTMENTS
MANUAL 7615

Service Modes and Error Messages
The following topics are covered: · · · · · · Test points Service Modes Error code buffer and error codes The "blinking LED" procedure Trouble shooting tips Customer Service Mode

Measurements should be performed under the following conditions: Video: color bar signal Audio: 3kHz left, 1kHz right Note: The measurements at the following test points were taken using a 100:1 probe: · I142, LSB Panel · I220, LSB Panel

Service Default Mode (SDM)
Introduction
The Service Default Mode (SDM) is a technical aid for the service technician. The Service Default Mode (SDM) establishes fixed, repeatable settings of customer controls, which allow consistent measurements to be made. The SDM also initiates the blinking LED procedure and, if necessary, overrides the 5V protection. This mode also allows the operating hours of the set, the software version, and error codes to be read. The SDM places the set in the following pre-defined conditions: · Tuning frequency set to Channel 3. · Volume level set to 25% (of the maximum volume level). · Other picture and sound settings set to 50% (mid-range). The following functions are turned off in SDM (and after leaving SDM): · Timer · Sleep timer The following functions are disabled during SDM (and enabled after leaving SDM): · Parental lock All other controls operate normally.

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Entering Service Default Mode
To enter the Service Default Mode, press the following key sequence on the remote control transmitter: 0-6-2-5-9-6-MENU Do not allow the display to time out between entries while keying the sequence. Upon entry into the Service Default Mode, the letters "SDM" will be displayed at the upper right corner of the screen.

Figure 1: SDM Screen

Special SDM functions
Access to normal user menu Pressing the "MENU" button on the remote control switches between the SDM and the normal user menus (with the SDM mode still active in the background). Run timer, software identification, and error buffer Press the Index or Status button on the remote control to toggle the OSD (except "SDM") ON and OFF to prevent the OSD from interfering with measurements and oscilloscope waveforms. Access to SAM To access the Service Alignment Mode while press the "VOLUME +" and "VOLUME " buttons on the local keyboard simultaneously for at least 4 seconds.

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The Blinking LED Procedure
The contents of the error buffer can also be made visible through the "blinking LED" procedure. This is especially useful when there is no picture. NOTE: · If errors 1, 2, 3, or 4 occur the LED ALWAYS blinks indicating the last error which occurred, even if the set is NOT in service mode.

When the SDM is entered, the LED will blink the number of times equal to the value of the error code. Upon entry into the SDM, the LED will blink the contents of the error-buffer. Error-codes greater than/equal to 10 are shown in the following manner: A long blink of 750 milliseconds indicating the decimal digit, followed by a pause of 1500 milliseconds. The LED will then blink the number equal to the error code. When all error-codes are displayed, the sequence is finished with an LED display of 3 seconds. At this point the sequence will begin again.

Example: Error code position Error buffer: · ·

1 2 3 4 5 12 9 6 0 0

After entering SDM: The sequence will begin with 1 long blink of 750 milliseconds, then pause 1500 milliseconds, then blink twice (indicating error code 12), then the LED will pause for 3 seconds, then blink 9 times (indicating error code 9), then the LED will pause for 3 seconds, then blink 6 times (indicating error code 6), then pause 3 seconds and blink for 3 seconds again, ending the blinking sequence.

Exiting Service Default Mode
To exit the Service Default Mode, press the Power button.

Service Alignment Mode (SAM)
Introduction
The Service Alignment Mode (SAM) is used to align the set and/or adjust the option settings and to display/clear the error code buffer values. Entering Service Alignment Mode To enter the Service Alignment Mode (SAM), press the following key sequence on the remote control transmitter: 0-6-2-5-9-6-INDEX or STATUS Do not allow the display to time out between entries while keying the sequence It is also possible to enter the Service Alignment Mode by pressing the "VOLUME +" and "VOLUME -" key on the local keyboard simultaneously for at least 4 seconds when the set is in SDM.

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Exit SAM:
To exit the Service Alignment Mode, press the Power button. In SAM the following information is displayed on the screen:

Figure 2: SAM Screen

Explanation notes/references:
1 Operation Hours (Run Timer): This display indicates the accumulated total of operational hours. (Shown in hexadecimal format) 2 Software identification of the main micro controller (A101US1-2.06) A10 is the engineering chassis name for the A10 PTV chassis · 1US1 is a character combination to indicate the software type and the supported languages: 3AP1 or 3AP2 are also possible in the Asian Pacific Region. · US = United States, AP = Asian Pacific · 1 = Main Software language version number · 2.06 = sub-version number 3 Error buffer (7 errors possible): Displays the 7 most recent errors. The most recent error is displayed at the upper left. 4 Option bytes (8 codes possible): Summary of options is explained below. 5 Sub menus are listed in a scroll menu.

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SAM Menu Control
Menu items may be selected using the cursor UP/DOWN keys. · The selected item will be highlighted. · When not all menu items will fit on the screen, pressing the cursor UP/DOWN keys on the remote transmitter will display the next/previous menu items. With the cursor LEFT/RIGHT keys, it is possible to: · (de)activate the selected menu item (e.g. GEOMETRY) · change the value of the selected menu item (e.g., VER-SLOPE) · activate the selected submenu (e.g., SERV-BLK) Access to normal user menu Pressing the "MENU" button on the remote control switches between the SAM and the normal user menus (with the SAM mode still active in the background). Pressing the "MENU" key in a submenu will return the screen to the previous menu.

The Menus and Submenus
Clear Errors
Erases the contents of the error buffer. Select the CLEAR ERRORS menu item and press the cursor LEFT or cursor RIGHT key. The contents of the error buffer are cleared. The functionality of the OPTIONS and ALIGNMENTS (TUNER, WHITE TONE, GEOMETRY, SOUND, and SMART SETTING) submenus are described in the service adjustments.

Error code buffer and error codes
Explanation of the Error code buffer The error code buffer contains all errors detected since the last time the buffer was erased. The buffer is written from left to right. When an error occurs that is not yet in the error code buffer, the error code will appear at the left side and all other errors shift one position to the right. The error code buffer will be cleared in the following cases: · by activating CLEAR ERRORS in SAM menu · exiting SDM or SAM with the "Standby" command on the remote control · upon automatic reset when content has not changed for 50 consecutive hours By leaving SDM or SAM via the power switch, the error buffer will not be reset. Examples: ERROR: 0 0 0 0 0 0 0 : No errors detected ERROR: 6 0 0 0 0 0 0 : Error code 6 is the last and only detected error ERROR: 9 6 0 0 0 0 0 : Error code 6 was first detected and error code 9 is the last detected (newest) error The contents of the error buffer can also be displayed by use of the "blinking LED" procedure, if no picture is available. See explanation of "The blinking LED procedure "below.

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Error code definition
In case of non-intermittent faults, clear the error buffer before starting the repair, to make sure "old" error codes are not present. If possible check the entire content of the error buffers. In some situations an error code is only the result of another error code (and not the actual cause). Note: a fault in the protection detection circuitry can also lead to a protection. Error codes 1,2, 3, and 4 are protection codes, and in this case the supplies of some circuits will be switched off. Also in protection, the LED will blink the number of times equivalent to the most recent error code.

Error code table
Code Number 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 Error Description Not an Error Too high I-beam or East/West protection Vertical protection X-Ray protection 5 volt protection - not used General IIC error BC loop not stabilized Bocma TDA888X IIC error Bocma IC 8v failure NVM IIC communication error Wrong NVM type Microp internal RAM error Main tuner IIC failure Sound IC failure SRAM test failure PIP Tuner IIC failure ECO Pip IC or DW Pip IC failure I/O expander I2C error Gemstar Guide Plus board V-chip located on the DW Pip Non-Volatile clock Incredible picture (YUV) CR Bocma DoubleWindow TDA888X error - not used - not used - not used Virtual Dolby - not used - not used CSP i2c error CSP NVM i2c error CSP NVM error - not valid data CSP dac i2c error

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A10 PTV MODEL LISTINGS AND SOFTWARE
MODEL 43P8341/37 43PP925/61 43PP925/97 50P8341/37 50P8342/37 50PP241/76 55P8241/37 55P8288/37 55P8341/37 55P8342/37 55PP241/76 55PP925/61 55PP925/97 60P8241/37 60P8288/37 60P8341/37 60P8342/37 60PP241/76 64P8341/37 64P8342/37 REGION (USA Model) (Korea Model) (Taiwan & Philippines Model) (USA Model) (USA Model, Sears) (LATAM Model) (USA Model) (USA Model, Best Buy) (USA Model) (USA Model, Sears) (LATAM Model) (Korea Model) (Taiwan & Philippines Model) (USA Model) (USA Model, Best Buy) (USA Model) (USA Model, Sears) (LATAM Model) (USA Model) (USA Model, Sears) CHASSIS PTV914, Fighter ------PTV915, Fighter PTV916, Fighter PTV918 PTV910, Fighter PTV910, Fighter PTV915, Fighter PTV916, Fighter PTV918 ------PTV910, Fighter PTV910, Fighter PTV915, Fighter PTV916, Fighter PTV918 PTV915, Fighter PTV916, Fighter + SOFTWARE 1US1 (see B) 3AP2 (see D) 3AP1 (see D) 1US1 (see B) 1US1 (see B) 1US1 (see C) 1US1 (see A) 1US1 (see A) 1US1 (see B) 1US1 (see B) 1US1 (see C) 3AP2 (see D) 3AP1 (see D) 1US1 (see A) 1US1 (see A) 1US1 (see B) 1US1 (see B) 1US1 (see C) 1US1 (see B) 1US1 (see B)

+ +

+ +

+ + + +

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Option Codes - NAFTA
A = USA Fighter, (1US1 Software) B = USA Fighter +, (1US1 Software) C = NAFTA Mexico, (1US1 Software)
1US1 CODE DESCRIPTIONS SBNP CVI C169 E149 SMCK AV3 CBFL IPIX IPMU VDBY PLST SOSD BLMU PIPC PIPT VSLC SURF CCAP DNRM NVCK VMUT TIME AAVL FUNN VCBK VBNR USRC BNUM ROTI SNIC TMWIN INCF NVM 1US1LOW 1US1HIGH CL12 HWBMS OB1 OB2 OB3 OB4 OB5 OB6-OB8 AUTO STANDBY NO PICTURE COMPONENT VIDEO INPUT COMPRESS 16:9 MODE AVAILABLE EXPAND 14:9 MODE AVAILABLE SMART CLOCK SIDE AV SOURCE COMB FILTER INCREDIBLE PICTURE INCREDIBLE PICTURE VIA MENU ITEM VIRTUAL DOLBY ENABLED PROGRAM LIST SMART OSD BLUE MUTE PIP CONTROL PIP TUNER VERTICAL SLICING SURF FEATURE AVAILABLE CLOSED CAPTION DNR FUNCTION AVAILABLE NON VOLATILE CLOCK VIDEO BLANKING DURING CHANNEL CH TIMER FEATURE AVAILABLE AVL AVAILABLE FINE TUNING MENU ITEM V-CHIP BLOCK UNRATED MENU V-CHIP BLOCK NO RATED MENU REMOTE A/B MENU ITEM NUMERICS DISPLAYED IN MENUS ROTATION/TILT SOUND BOARD PRESENT TIMEOUT FOR DIGIT ENTRY ON=5SEC OFF=2SEC INTERNAL COMB FILTER PRESENT NVM CORRUPTION PTV CLUSTER SELECT PTV CLUSTER SELECT 12/24 HOUR CLOCK ON=12 OFF=24 HARDWARE BLUE MUTE STREAK CAN BE USED TO ADJUST OPTION BYTES AT ONCE

A
OFF ON OFF OFF ON OFF ON ON ON OFF ON ON OFF ON OFF ON ON ON ON OFF ON ON ON OFF ON ON OFF ON OFF OFF OFF ON ON ON OFF ON OFF 75 181 238 209 208 0

B
OFF ON OFF OFF ON ON ON ON ON OFF ON ON OFF ON ON ON ON ON ON OFF ON ON ON OFF ON ON OFF ON OFF OFF OFF ON ON OFF ON ON OFF 79 183 238 209 176 0

C
OFF ON OFF OFF ON OFF ON ON ON OFF ON ON OFF ON OFF ON ON ON ON ON ON ON ON OFF ON ON OFF ON OFF OFF OFF ON ON ON OFF OFF OFF 75 181 255 209 160 0

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Option Codes - Asia Pacific
D = Taiwan & Philippines, (3AP1 Software) Korea, (3AP2 Software)
3AP1 & 3AP2 CODE DESCRIPTIONS ABSY SBNP CVI C169 E149 HWBMS SMCK AV3 AUSB CBFL IPIX IPMU VDBY PITN PLST SOSD BLMU PIPC PIPS PIPT ISUR W4x3 W169 VSLC SURF CCAP DNRM VMUT TIME AAVL CHLK ROTI SNIC TMWIN INCF NVM HWBMS OB1 OB2 OB3 OB4 OB5 OB6-OB8 AUTO STANDBY AFTER NO INTERACTION AUTO STANDBY NO PICTURE COMPONENT VIDEO INPUT COMPRESS 16:9 MODE AVAILABLE EXPAND 14:9 MODE AVAILABLE HARDWARE BLUE MUTE STREAK SMART CLOCK SIDE AV SOURCE AUTO STANDBY AUTO ON COMB FILTER INCREDIBLE PICTURE INCREDIBLE PICTURE VIA MENU ITEM VIRTUAL DOLBY ENABLED PHILIPS TUNER PROGRAM LIST SMART OSD BLUE MUTE PIP CONTROL PIP SURF PIP TUNER INCREDIBLE SURROUND DOUBLE WINDOW WITH 4:3 MAIN PICTURE AVAILABLE DOUBLE WINDOW TWO COMPRESSED 16:9 AVAILABLE VERTIC AL SLICING SURF FEATURE AVAILABLE CLOSED CAPTION DNR FUNCTION AVAILABLE VIDEO BLANKING DURING CHANNEL CH TIMER FEATURE AVAILABLE AVL AVAILABLE CHILD LOCK FEATURE AVAILABLE ROTATION/TILT SOUND BOARD PRESENT TIMEOUT FOR DIGIT ENTRY ON=5SEC OFF=2SEC INTERNAL COMB FILTER PRESENT NVM CORRUPTION HARDWARE BLUE MUTE STREAK CAN BE USED TO ADJUST OPTION BYTES AT ONCE

D
OFF ON ON OFF OFF ON ON ON ON ON ON ON ON OFF ON ON OFF ON ON ON ON ON OFF ON ON ON ON ON ON ON ON OFF ON OFF ON ON OFF 99 246 251 253 112 0

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Option Codes - Late Production Change
Late Production SSM Panels with HWBMS "ON" A = USA Fighter, (1US1 Software) B = USA Fighter +, (1US1 Software) C = NAFTA Mexico, (1US1 Software) D = Taiwan & Philippines, (3AP1 Software) - Korea, (3AP2 Software) A
HWBMS OB1 OB2 OB3 OB4 OB5 OB6-OB8 0 0 0 0 HARDWARE BLUE MUTE STREAK CAN BE USED TO ADJUST OPTION BYTES AT ONCE ON 75 181 238 209

B
ON 79 183 238 209

C
ON 75 181 255 209

D
ON 99 246 251 253

Gray Scale Alignment
Gray Scale alignment will be necessary after changing the SSB (Small Signal Board) or the CRTs. Enter the Service Alignment Mode by entering 0-6-2-5-9-6-(Status or Index).

G2 Setup
Preferred Method 1. 2. 3. 4. 5. Connect a Black Level signal to the set. Preset all G2 controls on the Focus/G2 Combo Block to minimum (fully CCW) Connect an Oscilloscope to the Collector of each output transistor on the Green CRT board. Set the probe to times 10. Adjust the Green G2 control until the Black Level is at 200V. Repeat steps 3 and 4 for the Red and Blue CRTs.

Alternate Method 1. 2. 3. Connect a Black Level signal to the set. Preset all G2 controls on the Focus/G2 Combo Block to minimum (fully CCW). Turn each G2 control clockwise until each CRT is barely illuminated.

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Gray Scale Setup
1. 2. Connect a Gray Scale pattern to the set. Preset the registers as shown below. NORMAL RED NORMAL GREEN NORMAL BLUE NORMAL BLACK LEVEL RED NORMAL BLACK LEVEL GREEN DELTA COOL RED DELTA COOL GREEN DELTA COOL BLUE DELTA COOL BLACK LEVEL RED DELTA COOL BLACK LEVEL GREEN DELTA WARM RED DELTA WARM GREEN DELTA WARM BLUE DELTA WARM BLACK LEVEL RED DELTA WARM BLACK LEVEL GREEN CATHODE DR 3. 4. 5. 6. 7. 26 56 59 10 13 -6 -7 4 2 1 6 0 -8 -2 -1 12

Set Brightness, Color, and Sharpness controls to 40 and Picture control to maximum. Adjust the NORMAL BLACK LEVEL controls to set the correct gray scale in the dark areas of the picture. Adjust the NORMAL RED AND BLUE controls to set the correct gray scale in the light areas of the picture. Use the Menu button on the Remote to back out to the main service menu. Turn the set off using the Power Button on the Remote or the front of the set.

Customer Service Mode (CSM)
All PTV900 series sets are equipped with the "Customer Service Mode" (CSM). CSM is a special service mode that can be activated and deactivated by the customer, by request of the service technician/dealer in order to identify the status of the set. This CSM is a 'read only' mode, therefore modifications in this mode are not possible.

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Entering the Customer Service Mode
The Customer Service Mode can be switched on: · By pressing the MUTE button on the remote control and any key on the local keyboard (Channel Up, Channel Down, VOL +, VOL -) on the TV simultaneously for at least 4 seconds. The following menu will appear.

Figure 3: CSM Screen When the CSM is activated: · picture and sound settings are set to nominal levels · Modes that interfere with the behavior of the set are switched off (sleep timer, auto standby, etc.)

Exit the Customer Service Mode
The Customer Service Mode will be switched off after: · Pressing any key on the remote control (except "Channel Up" or "Channel Down") · Switching off the TV set by pressing the Power button on the remote control or the local keyboard. Exiting CSM resets the TV set back to its initial values.

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The Customer Service Mode Information Screen
Upon entry into the Customer Service Mode the following screen will appear.

Figure 4: CSM Screen The Customer Service Menu shows the following information: Line 1: "HRS : nnnnn" and SWID : "A10BBC-X.Y" HRS: Indicates the accumulated total of operational hours. (Shown in hexadecimal format.) (Standby hours are not counted as operating hours). SWID: Software identification of the main micro controller (example: A10US1-2.7) A10 is the engineering chassis name for the PTV900 series chassis · 1US1 is character combination to indicate the software type and the supported languages: 3AP1 or 3AP2 are also possible for the Asian Pacific regions. · US = USA/NAFTA, AP = Asian Pacific · 1 = Main Software language version number · 2.7 = sub-version number Line 2: "CODES: xx xx xx xx xx xx xx " Error code buffer (see explanation of error codes above) Displays the last 7 errors of the error code buffer. Line 3: "OPT xxx xxx xxx xxx xxx xxx xxx xxx" Option bytes Option bits control the software and hardware functionality of the A10.0. An option byte or option number represents 8 of those bits. Each option number is displayed as a number between 0 and 255. The set may not work correctly when an incorrect option code is set. See Service Adjustments for more information on correct option settings

7615 Adjustments page 14
Line 4: NOT USED

Line 5: "NO SIGNAL" Indicates that the set is not receiving an "ident" signal on the selected source. · no or bad antenna signal; connect a proper antenna signal · antenna not connected; connect the antenna · no channel / preset is stored at this program number; go to the INSTALL menu and store a proper channel at this program number · the tuner is faulty (in this case the CODES line will contain number 13 or 16); check the tuner and replace/repair if necessary Note: On some models, (if the BM option is ON), BLUE MUTE is displayed when no signal is received. Line 6: "TIMER ON " Indicates that the on/off timer is running. The following Complaints may be caused by the activation of the sleep timer: The set may turn on from standby or may switch to a different channel without using either the remote control or the local keyboard. To switch off the activation timer: Select "TIMER" in the "FEATURE" menu. Select "ACTIVATE' in the "TIMER" menu. Set to "OFF" with the left/right cursor keys. Line 7: NOT AVAILABLE

Line 8: "NOT PREFERRED" Indicates that at least one channel is deleted as a preferred channel (by default, all channels are skipped. Note that "SKIPPED" will always be displayed in CSM unless all the channels are not skipped. To add a channel as a selected channel to the list of preferred channels: Select "INSTALL" menu Select "CHANNEL EDIT" Select "ADD/DELETE" Set to "ADD" with the left/right cursor keys Line 9: "HOTEL MODE ON" Indicates that the Hotel mode has been activated. Line 10: "SOURCE:" Indicates which SOURCE is installed for this preset. EXT1, SVHS2, EXT2, Tuner. Line 11: "SOUND" Indicates which sound mode is installed for this preset. Mono, NICAM, Stereo, L1, L2, SAP, Virtual or Digital Line 12: "VOLUME" Value indicates level at entry CSM. Line 13: "BALANCE" Value indicates level at entry CSM.

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Line 14: "HUE" Value indicates level at entry CSM. Line 15: "COLOR" Value indicates level at entry CSM. Line 16: "BRIGHTNESS" Value indicates level at entry CSM. Line 17: "CONTRAST" Value indicates level at entry CSM. Line 18: "SPEAKERS" Indicates is the Speakers are On or Off.

Convergence Procedures
The set should be warmed up for at least 20 minutes prior to making any Geometry or Convergence adjustments. A signal must be applied to the set while performing Convergence or Geometry alignments. This is necessary to provide the correct horizontal and vertical sync to the Convergence panel. Failure to do so will result in an out of convergence picture when signal is applied to the set. The Serviced Technician should sit at least 5 to 10 feet from the front of the screen while doing Convergence. Ensure that you are eye level with the area of the screen you are adjusting. When performing Digital Convergence, the adjustments are interactive. A change in one quadrant will affect adjacent areas of the screen. Several passes through the Convergence sequence may be necessary. When doing Convergence, it is advised to follow the sequence pattern when going from on adjustment location to another. Pressing the Right Cursor key will sequence the Icon through a preloaded sequence. When the Convergence error is small, a touch up Convergence will be all that is necessary. Do not adjust Green Geometry while in this mode. A compete in-depth Convergence is required when the Small Signal Module (SSM) or the Convergence Memory IC, has been replaced. If the SSB (Small Signal Board) or the Large Signal Board (LSB) has been replaced, a complete in-depth Geometry should be completed before Convergence is adjusted. The Geometry alignment should not be necessary if the SSB or LSB have not been changed.

Screen Templates
When performing a complete in-depth Convergence alignment, a Screen Template is necessary to obtain the correct Geometry. The correct Templates are listed below: 43 50 55 60 64 INCH INCH INCH INCH INCH ST4168 ST4169 ST4170 ST4171 ST4172

7615 Adjustments page 16

Touch-up Convergence adjustments
Enter the Digital Convergence Mode (DCM) by entering 0-6-2-5-9-7-(Status or Index) on the Remote control. The following menu will appear: Select an active channel or Aux Input. A signal must be applied to the set when performing convergence. If any Customer Adjustments need to be made, the Menu button can be used to toggle between the Customer Menu and DCM. The MPOSD ADJUST is used to center the Customer Convergence grid. A highlighted cross will appear along with the Convergence alignment grid. The highlighted cross should be centered onto the center of the Convergence grid. To perform a Touch Up Convergence, highlight SELECTION and press the right cursor button on the remote. The following menu will appear: Selections STORE, RESTORE FACTORY, and RESTORE DEFAULT are not shown after selecting SELECTION. Press the cursor down button on the Remote for these selections to appear. RESTORE FACTORY loads Convergence defaults from the Factory Loaded section of the Convergence Memory IC. RESTORE DEFAULT loads Convergence defaults from the sets software.

To perform a Touch-up Convergence:
1. Enter the Convergence Mode and select RED TO GREEN or BLUE TO GREEN. Do not select GREEN (Green Geometry) without placing a Template over the screen. To perform Green Geometry, refer to the Complete in-depth Convergence. Use the Cursor buttons on the Remote to Navigate from one adjustment point to another. Press the Status or Index button on the Remote to select ADJUST. Use the cursor buttons on the Remote to adjust the Red to Green or Blue to Green. Press the Status or Index button again to navigate to the next adjustment location. After Convergence alignments are complete, press the Menu button on the Remote to return to the SELECTION menu. Highlight the STORE selection and press the right cursor key on the Remote to save changes. Use the GREEN TO RED or GREEN TO BLUE selections to perform convergence when the Green CRT has been replaced.

2.

3. 4. 5.

Complete in-depth Convergence SCREEN CENTERING
1. 2. Make sure a signal is applied to the set. Enter the Convergence mode by entering 0-6-2-5-9-7-(Status or Index). Select an active channel or input. If the Customer settings need to be adjusted, pressing the Menu button will access the Customer menu. 3. Place a Template over the screen. 4. Select GREEN in the SELECTION menu. 5. Place a jumper across connector 1005 on the SSM to defeat convergence drive. 6. Using the centering rings on the Green CRT, center the convergence pattern onto the center point of the Convergence Template. 7. Press the Menu button on the Remote to return to the SELECTION menu. 8. Select RED TO GREEN in the menu. 9. Center the Red pattern onto the Green pattern. 10. Select BLUE TO GREEN in the SELECTION menu. 11. Center the Blue pattern onto the Green pattern. 12. Remove the Jumper on connector 1005. Note: If a CRT has been replaced, it is only necessary to perform Screen Centering for the CRT being replaced.

7615 Adjustments page 17

GREEN GEOMETRY
Make sure a signal is applied to the set. Enter the Convergence mode by entering 0-6-2-5-9-7-(Status or Index). Use the Menu button to toggle between DCM and Customer Mode. Select an active channel or input while in the Customer Mode. 3. Place a Template over the Screen. 4. Select GREEN in the SELECTION menu. 5. The Icon will appear in the center of the screen. Press the Right Cursor key on the remote to move the Icon to the next adjustment location. At each location press the Status or Index button to enter the ADJUST mode. Using the Cursor keys, adjust the Icon onto the adjustment point on the template. It is recommended that the two outside vertical lines not be adjusted in the first two passes. 6. Continue to follow the pattern and make corrections until the Convergence Crosshatch pattern matches the Template. 7. Press the Menu button to return to the SELECTION menu. 8. Use the Cursor down key to highlight the STORE selection. 9. Press the Right cursor key to save the alignments. 10. Remove the Template. 1. 2.

RED CONVERGENCE
1. 2. 3. Select RED TO GREEN in the SELECTION menu. Adjust the Red crosshatch pattern onto the green pattern in the same manner that Green was adjusted to the Template. Save the alignments.

BLUE CONVERGENCE
1. 2. 3. Select BLUE TO GREEN in the SELECTION menu. Adjust the Blue crosshatch pattern onto the green pattern in the same manner that Green was adjusted to the Template. Save the alignments.

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Complete in-depth Geometry
To activate the Service Alignment Mode, enter 0-6-2-5-9-6-(Status or Index) using the Remote Control. Press Status or Index toggle to the Customer menu. Select an active channel. Pressing the Status or Index button will bring up the SAM mode. 1. 2. 3. 4. Apply a Crosshatch pattern to the set and select that input. Defeat Convergence by shorting the two pins of connector 1005 on the SSM. Press the Cursor-down key on the remote and select Geometry with the Right cursor key. Adjust the Screen Geometry as necessary.

The following are default values: VER.AMPL VER.SLOPE SERV.BLK HOR.SHIFT HOR.BOW HOR.PARALLEL EW.WIDTH EW.PARA EW.TRAP EW.UCORN EW.LCORN H60.WIDTH H60.PARA H60.SHIFT V60.AMPL VER.SCOR VER.SHIFT VER.ZOOM VER.SCROLL 30 34 OFF 32 20 31 22 21 19 6 0 2 0 7 0 18 35 32 32

To save changes, use the Menu button on the Remote to back out to the main menu. Then turn the set off using the power button on the Remote or the front of the set. This will save any changes made.

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Troubleshooting Tips
The Power Supply Circuit
When the set is turned On, the Main Switch Mode power supply is turned On. This supply produces the +130 volt,+32 volt,-32 volt, two +15 volt, and Audio supplies. When IC 7302 develops a normal steady state operation, the 130 volt supply is sampled by resistors 3324,3323,and 3322. This sample voltage is then sent to Shunt regulator 7303 which drives the feedback optoisolator 7303.The feedback voltage on Pin 14 is then compared with an internal 2.5 volt reference by comparator "C". Comparator "C" then sets the reference voltage on the inverting side of comparator "B" to control the On time of the drive at Pin 3.If the voltage on Pin 14 increases due to the 130 volt supply increasing, the On time of the pulse on Pin 3 will be reduced. If the 130 volt supply decreases, the voltage on Pin 14 would decrease, causing the On time of the pulse on Pin 3 to increase. This is used to keep the 130 volt supply at the correct voltage. Variable resistor 3322 is used to adjust the 130 volt supply to the correct level. The overvoltage protection circuit of the IC will shut the IC down if the VCC level on Pin 1 exceeds 17 volts. To troubleshoot this circuit, first check the On/Off line from the Small Signal Panel to ensure that it is going Low. Then check for the presence of startup voltage on Pin 1 of the regulator IC 7302.If the IC is working correctly, this voltage will be changing from 9.4 to 14.5 volts. If the startup voltage is not present, check the startup resistor 3300 and the bridge rectifier. If the voltage on Pin 1 is changing, check the drive signal on Pin3.Then check for signal on the gate and drain of 7301.An excessive load on the secondary, a short on the 130 volt line for example, would cause the supply to pulse with little or no voltage on the secondary.

Picture problems
Picture too dark or too bright Press "Smart Picture" button on the remote control. If this improves the picture, increase / decrease the brightness value or increase / decrease the contrast value. Enter the Customer Service Mode. If this improves the picture, exit Customer Service Mode, then Increase / decrease the brightness value or increase / decrease the contrast value. White line around picture elements and text Press "Smart Picture" button on the remote control. If this improves the picture, decrease the sharpness value. Enter the Customer Service Mode. If this improves the picture. Decrease the sharpness value. Snowy picture Snow is an antenna or antenna connector problem. Check tuner and AGC. Black and white picture Press the "Smart Picture" button on the remote control. If this improves the picture, increase the color value. Enter the Customer Service Mode. If this improves the picture. Increase the color value. Menu text not sharp enough Press the "Smart Picture" button on the remote control. If this improves the picture, decrease the contrast value. Enter the Customer Service Mode. If this improves the picture. Decrease the contrast value. Sound problems No sound or sound too loud (after channel change / switching on) - Enter the Customer Service Mode. If the volume is OK, increase / decrease the volume level.

Philips Consumer Electronics Technical Service Data
Service and Quality Service Publications Dept. One Philips Drive P.O. Box 14810 Knoxville, TN 37914

Manual 7615
Model no.: 43P8341 First Published: 09-23-02 Rev. Date: 10-25-02 Print Date: 2004-10-04

Electrical Diagrams

REFER TO SAFETY GUIDELINES SAFETY NOTICE: ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE CHASSIS AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES. CAUTION: USE A SEPARATE ISOLATION TRANSFORMER FOR THIS UNIT WHEN SERVICING
© Philips Electronics North America Corporation Visit our World Wide Web Site at http://www.forceonline.com

Philips Consumer Electronics Technical Service Data
Service and Quality Service Publications Dept. One Philips Drive P.O. Box 14810 Knoxville, TN 37914

Manual 7615
Model no.: 43P8341 First Published: 09-23-02 Rev. Date: 10-25-02 Print Date: 2004-10-04

Scope Patterns

REFER TO SAFETY GUIDELINES SAFETY NOTICE: ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE CHASSIS AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES. CAUTION: USE A SEPARATE ISOLATION TRANSFORMER FOR THIS UNIT WHEN SERVICING
© Philips Electronics North America Corporation Visit our World Wide Web Site at http://www.forceonline.com

Philips Consumer Electronics Technical Service Data
Service and Quality Service Publications Dept. One Philips Drive P.O. Box 14810 Knoxville, TN 37914

Manual 7615
Model no.: 43P8341 First Published: 09-23-02 Rev. Date: 10-25-02 Print Date: 2004-10-06

Mechanical Diagrams

REFER TO SAFETY GUIDELINES SAFETY NOTICE: ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE CHASSIS AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES. CAUTION: USE A SEPARATE ISOLATION TRANSFORMER FOR THIS UNIT WHEN SERVICING
© Philips Electronics North America Corporation Visit our World Wide Web Site at http://www.forceonline.com

7615 Exploded Views page 1

7615 Exploded Views page 2

7615 Exploded Views page 3

Philips Consumer Electronics Technical Service Data
Service and Quality Service Publications Dept. One Philips Drive P.O. Box 14810 Knoxville, TN 37914

Manual 7615
Model no.: 43P8341 First Published: 09-23-02 Rev. Date: 10-25-02 Print Date: 2004-09-08

Parts List

REFER TO SAFETY GUIDELINES SAFETY NOTICE: ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE CHASSIS AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES. CAUTION: USE A SEPARATE ISOLATION TRANSFORMER FOR THIS UNIT WHEN SERVICING
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43P8341 - Manual no. 7615
CABINET & ACCESSORY PARTS CABINET & ACCESSORY PARTS AC01 BACKCOVER f/43P8341/37, 43P8341A/37 ( USA Model) . . . . . . . . . . . . . AC02 CABINET BACK, UPPER. . . . . . . . . AC03 PIP FRAME. . . . . . . . . . . . . . AC04 SUPPORT FRAME F/SSB. . . . . . . . . AC06 CHASSIS FRAME. . . . . . . . . . . . AC07 LIGHT BARRIER. . . . . . . . . . . . AC08 REAR JACK FRAME. . . . . . . . . . . AC09 FRONT ASM. . . . . . . . . . . . . . AC10 BRACKET MIRROR MTG 43", (2 used) . . AC14 FRESNEL SCREEN, 43". . . . . . . . . AC15 LENTICULAR SCREEN, 43" . . . . . . . AC16 PROTECTIVE FILTER SCREEN, 43". . . . AC19 MIRROR ASM., 43" . . . . . . . . . . S AC23 Mains Cord (Special - Noise Filtered) AC25 Speakers, 4" x 6" Alt. (2 used). . . AC28 BRACKET SCREEN TOP, (2 used) . . . . AC29 BRACKET SCREEN SIDE, (2 used). . . . AC30 BAFFLE SPEAKER GRILL . . . . . . . . AC31 NAMEPLATE. . . . . . . . . . . . . . AC37 BUTTON ASSY. . . . . . . . . . . . . S CRTB CRT, 180DLB22(B) (U) (HITJ) B, BLU . S CRTG CRT, 180DLB22(G) (MU) (HITJ) Y, GRN. S CRTR CRT, 180DLB22(R) (HU) (HITJ) B, RED. S DEFL DEFLECTION YOKE, DAV4284M (TSAJ) B, ( 3 used). . . . . . . . . . . . . . . S FG2 FOCUS/G2 CONTROL, 100M 15KV FMP-PTV Y LSVM INDUCTOR, FIXED, SCAVEM DBV4305C (TSA J). . . . . . . . . . . . . . . . . . REMOTE RC2015/01 Remote Control (Fighter +) CRT ASSEMBLY CRT ASSEMBLY X1 SCREW, 8-32X0.5 TORX, (12 used), LENS TO COUPLER . . . . . . . . . . . . . X10 COOLANT KIT. . . . . . . . . . . . . X11 SEAL, CRT, (3 used). . . . . . . . . X12 MOUNTING BRACKET, CRT, (3 used). . . X13 SPRING COMPRESSION, (12 used), CRT MT X14 SCREW, SHOULDER, (12 used), CRT TO CO UPLER. . . . . . . . . . . . . . . . X2 LENS DELTA 78, (2 used), GREEN & RED X2 LENS DELTA 77, FOR BLUE. . . . . . . X3 LENS C-ELEMENT DELTA-77, FOR GREEN . X3 LENS C-ELEMENT DELTA-77, (2 used), RE D & BLUE . . . . . . . . . . . . . . X4 SEAL, LENS, (3 used), LENS TO COUPLER X5 CAP, COUPLER, (3 used), DIAPHRAGM COV ER. . . . . . . . . . . . . . . . . . X6 DIAPHRAM COUPLER, (3 used) . . . . . X7 SEAL, VENT PLUG, (3 used). . . . . . X8 PLUG, VENT, (3 used) . . . . . . . . X9 COUPLER CRT-LENS, Green. . . . . . . X9 COUPLER, CRT-LENS 43", (2 used), RED & BLU. . . . . . . . . . . . . . . . X15 CRT Anode Lead . . . . . . . . . . . 2108 2110 3135 3135 3135 3135 3135 3135 3135 3135 3135 3135 3135 3135 3135 2422 2422 3135 3135 3135 3135 3135 9322 9322 9322 014 037 014 014 014 013 014 017 011 014 014 014 034 070 264 011 011 017 015 017 121 155 121 10823 50021 10062 10321 09962 03731 09982 06843 04611 10311 10301 10022 90011 98164 00425 04481 04491 06853 02511 06982 33682 29682 31682 2214 S 3000 S 3001 S 3002 3003 3009 3010 S 3011 S 3012 3300 S 5000 S 5005 5103 S 5106 6000 6001 9000 9001 9002 9003 9030 9031 9032 9101 9102 CBA CAPACITOR, CERAMIC, HEAVY DUTY, 1KV, 1NF., 10%. . . . . . . . . . . . . . ELECTROLYTIC CAPACITOR, 200V, 470UF., 20%. . . . . . . . . . . . . . . . . ELECTROLYTIC CAPACITOR, 250V, 10UF., 20%. . . . . . . . . . . . . . . . . RESISTOR, METAL FILM, 4.7MEG, 5% . . RESISTOR, METAL FILM, 4.7MEG, 5% . . RESISTOR, METAL FILM, 4.7MEG, 5% . . RESISTOR, CARBON COMP., 470R, 20%. . RESISTOR, WIRE WOUND, 10W, 2R2, 5% . RESISTOR, WIRE WOUND, 10W, 2R2, 5% . VARISTOR, DC 1MA/495V S MAX 850V . . RESISTOR, METAL FILM, 1MEG, 5% . . . RESISTOR, METAL OXIDE, 5W, 22K, 5% . FILTER, MAINS, 8MH., 7A. . . . . . . FILTER, MAINS, 80UH., 1.8A . . . . . FIXED INDUCTOR, 4.7UH., 5% . . . . . FILTER, MAINS, 80UH., 1.8A . . . . . DIODE BRIDGE RECTIFIER, GBU4JL-7002. DIODE BRIDGE RECTIFIER, DF06M. . . . WIRE JUMPER, 0.58MM. . . . . . . . . WIRE JUMPER, 0.58MM. . . . . . . . . WIRE JUMPER, 0.58MM. . . . . . . . . WIRE JUMPER, 0.58MM. . . . . . . . . WIRE JUMPER, 0.58MM. . . . . . . . . WIRE JUMPER, 0.58MM. . . . . . . . . WIRE JUMPER, 0.58MM. . . . . . . . . WIRE JUMPER, 0.58MM. . . . . . . . . WIRE JUMPER, 0.58MM. . . . . . . . . FCC FILTER PANEL ASSEMBLY. . . . . .

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