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Protection Events

Several protection events are controlled bythe UOC:

z

BC protection , to protect thepicture tube from a too high beam current. The UOC has the
capabilityof measuring the normal back level current during the vertical flyback.So if for
some reason the CRT circuit is malfunctioning (i.e. highbeam current), the normal black
current will be out of the 75 μArange, and the UOC will trigger the power supply to shut
down. However,this is a high beam-current situation, the TV screen will be brightwhite
before the set is shut down.

z

E/Wprotection , two protection mechanisms are built in, over-currentand over-voltage.

In case ofover-current due to defective parts in the line deflection outputstage, a
high current will flow through resistors 3405//3406.If this current is large enough to
create a voltage drop of 0.7V across 3405//3406, transistor Q7606 (in A7 diagram)
will conduct and pin 80 of the UOC will be pulled down. Thereafter,the UOC will
shut down the power supply. In case of further currentincrease, the fused resistor
3411 is built-in for double protection.

In case of a high voltage appearing across capacitor 2401(dependent of the tube
size), which is high enough to trigger zenerdiode 6401 into conduction, transistor
Q7606 (in A7 diagram) willconduct and UOC is triggered to shut down the power
supply.

z

I

2

C protection , to check whetherall I

2

C IC"sare functioning.

In case one of these protections is activated, the setwill go into ‘standby’.

The ‘on’ and ‘standby’ LEDsare controlled via the UOC.

Abbreviation list

Abbreviation

Description

2CS

2 Carrier (or Channel) Stereo

ACI

Automatic Channel Installation: algorithm that installsTV
sets directly from cable network by means of a predefined
TXTpage

ADC

Analogue to Digital Converter

AFC

Automatic Frequency Control: control signal used totune to
the correct frequency

AFT

Automatic Fine Tuning

AGC

Automatic Gain Control: algorithm that controls thevideo

Page 27 of 32

SPMS

7/8/2004

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Содержание 27PS60S321

Страница 1: ... Locations 2 Power Supply Diagram A1 3 Line Deflection Diagram A2 4 Frame Deflection Diagram A3 5 Tuner IF Diagram A4 6 Video IF And Sound IF Diagram A5 7 Synchronization Diagram A6 8 Control Diagram A7 9 Audio Amplifier Diagram A8 10 BTSC Stereo SAP Decoder Diagram A9 11 Audio Video Source Switching Diagram A10 12 BTSC NDBX Stereo Decoder Diagram A11 13 Front I O Control Headphone Diagram A12 14 ...

Страница 2: ...LIARIZE 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 Manual 7629 Model no 27PS60S321 First Publish 12740 T8 Rev Date 2002...

Страница 3: ...MAIN CABINET EXPLODED VIEW Page 1 of 1 ...

Страница 4: ...IARIZE 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 Manual 7629 Model no 27PS60S321 First Publish 12740 T8 Rev Date 2002 ...

Страница 5: ...Never use heatsinks as ground Test probe Ri 10 MO Ci 2 5pF Use an isolated trimmer screwdriver to perform the alignments Service Default Alignment Mode SDAM Entry for Commercial Models Note For commercial models a master setup remote control is required in order to access the Service Default Alignment Mode SDAM 1 Use the master setup remote control to identify the television s operational mode eit...

Страница 6: ...menu will vary information similar to the following will be displayed Menu Item Settings Options MENU TITLE SETUP MENU MAIN MENU LANGUAGE ENGLISH ESPANOL FRANCAIS CHANNEL INSTALL CABLE TUNING ON OFF BRIGHTNESS 31 COLOR 31 CONTRAST 31 SHARPNESS 31 TINT 0 NOISE REDUCTION ON OFF SOUND MODE MONO STEREO SAP OFF NO SAP ON AUDIO OUT FIXED VARIABLE BALANCE 0 TREBLE 31 BASS 31 INCRED STEREO ON OFF AVL ON O...

Страница 7: ...E V CHIP ON OFF V CHIP SETUP SLEEPTIMER OFF 15 30 45 60 90 120 180 240 EXIT 5 After making changes to the settings the EXIT option may be used to leave the Institutional Television Menu Hardware Alignments ...

Страница 8: ...nt 1 Enter SDAM 2 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 3 Use the MENU UP DOWN keys to highlight the WHITE TONE sub menu ...

Страница 9: ...seconds external triggering on the vertical pulse 19 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 20 Measure the cut off pulse during 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 ...

Страница 10: ...shatch 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 f...

Страница 11: ...b 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 MEN...

Страница 12: ...5 16 23 129 162 252 152 0 32PS55 S321 0 23 129 162 252 152 0 32PS60 B321 0 23 129 162 253 152 0 32PS61 S321 0 23 129 162 253 152 0 33LL80 1131 0 23 129 162 253 152 0 CH0119 C322 133 16 2 132 0 CH0127 C321 213 18 2 64 0 MS2530 C321 0 5 0 10 192 9 0 HC0113 C321 1 16 148 148 0 HC0119 C322 1 16 148 148 0 MS2530 C325 0 5 0 10 192 9 0 MS2730 C321 0 5 0 1 192 9 0 MS3250 C321 0 215 129 162 164 88 0 MS3650...

Страница 13: ... 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 Enter SDAM 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 se...

Страница 14: ...ed slicing level of 70 To adjust SL 1 Enter SDAM 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 2 Use the MENU UP DOWN keys to highlight the TUNER sub menu 3 Press the MENU LEFT RIGHT keys to enter the TUNER sub menu 4 Use the MENU UP DOWN keys to select SL 5 Use the MENU LEFT RIGHT ...

Страница 15: ...d changes to the WHITE TONE submenu values are made press the MENU button to return to the top level SDAM menu 7 To ensure the WHITE TONE settings are saved 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...

Страница 16: ... 11 Use the MENU LEFT RIGHT keys to adjust the values of items in the HORIZONTAL and VERTICAL sub menus 12 When all desired changes to the HORIZONTAL and VERTICAL sub menu values are made press the MENU button twice to return to the top level SDAM menu 13 To ensure the GEOMETRY settings are saved Turn the television set OFF by using the POWER button on the remote control transmitter or the local k...

Страница 17: ...vertical lines in the upper corners of the screen Lower Corner Parabola LCP Aligns straight vertical lines in the lower corners of the screen East West Trapezium EWT Align straight vertical lines at the middle of the screen Figure Vertical Menu Vertical Vertical slope VSL Aligns the picture so the proportions are the same at the top and bottom of the screen This alignment must be performed first b...

Страница 18: ... television sets Table Default Geometry Values Alignment Description 20RFL260 37R BTSC NON DBX 21PT839B 85R BTSC DBX 27RFL260 37R BTSC DBX 20RFL250 37R BISONIC 21PT639A 85R BISONIC HP Hor Parallelogram 31 33 33 31 33 HB Hor Bow 30 30 30 30 30 HSH Hor S hift 35 39 39 35 39 EWW East West Width 34 35 35 34 35 EWP East West Parabola 33 22 22 33 22 UCP Upper Corner Parabola 35 41 41 35 41 LCP Lower Cor...

Страница 19: ... value of AF M to 300 6 Press the MENU button to return to the top level SDAM menu 7 To ensure the AF M setting is saved 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...

Страница 20: ...u 7 To ensure the A2T setting is saved 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 ...

Страница 21: ... 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 Manual 7629 Model no 27PS60S321 First Publish 12740 T8 Rev Date...

Страница 22: ...v Electrolytic 3198 025 54780 2210 Cap 1u 80 20 16v Ceramic 3198 017 21050 2211 Cap 470n 80 20 10v Ceramic 3198 017 44740 2213 Cap 22n 10 50v Ceramic 3198 017 02230 2214 Cap 22n 10 50v Ceramic 3198 017 02230 2215 Cap 22n 10 50v Ceramic 3198 017 02230 2216 Cap 1000u 20 16v Electrolytic 3198 026 21020 2217 Cap 22n 10 25v Ceramic 3198 017 32230 2219 Cap 220n 80 20 25v Ceramic 3198 023 22240 2220 Cap ...

Страница 23: ...ized Glass 3198 021 31030 3159 Res 1K2 1 1 10W Metallized Glass 2120 108 92616 3170 Res 4K7 5 1 6W Carbon Film 3198 011 04720 3172 Res 68K 5 1 6W Carbon Film 3198 011 06830 3173 Res 10K 5 1 6W Carbon Film 3198 011 01030 3174 Res 8K2 5 1 6W Carbon Film 3198 011 08220 3175 Res 8K2 5 1 6W Carbon Film 3198 011 08220 3176 Res 100 ohm 5 1 6W Carbon Film 3198 011 01010 3177 Res 8K2 5 1 6W Carbon Film 319...

Страница 24: ...ed Glass 3198 021 33320 3683 Res 390 ohm 5 1 16W Metallized G lass 3198 021 33910 3684 Res 560 ohm 5 1 16W Metallized G lass 3198 021 35610 3685 Res 560 ohm 5 1 16W Metallized G lass 3198 021 35610 3686 Res 1K5 5 1 16W Metallized Glass 3198 021 31520 3691 Res 330 ohm 5 1 16W Metallized G lass 3198 021 33310 3693 Res 220 ohm 5 1 16W Metallized G lass 3198 021 32210 3694 Res 4K7 5 1 16W Metallized G...

Страница 25: ...mper 0 58MM 3198 036 90010 9172 Wire Jumper 0 58MM 3198 036 90010 9173 Wire Jumper 0 58MM 3198 036 90010 9175 Wire Jumper 0 58MM 3198 036 90010 9176 Wire Jumper 0 58MM 3198 036 90010 9178 Wire Jumper 0 58MM 3198 036 90010 9179 Wire Jumper 0 58MM 3198 036 90010 9181 Wire Jumper 0 58MM 3198 036 90010 9182 Wire Jumper 0 58MM 3198 036 90010 9183 Wire Jumper 0 58MM 3198 036 90010 9192 Wire Jumper 0 58M...

Страница 26: ...0 3335 Res 100 ohm 5 1 6W Carbon Film 3198 011 01010 3336 Res 1K 20 1 2W Carbon Film 3198 013 01020 S 3340 Res 10 ohm 5 1 2W Metal Film 2306 207 03109 S 3341 Res 1 ohm 5 1 3W Metal Film 2306 204 03108 S 3342 Res 1 ohm 5 1 3W Metal Film 2306 204 03108 3343 Res 1K5 20 1 2W Carbon Film 3198 013 01520 3344 Res 22 ohm 5 1 6W Carbon Film 3198 011 02290 3345 VDR DC 1MA 50V S MAX 115V A 2322 593 13507 334...

Страница 27: ...3836 Res 1K 5 1 10W Metalized Glass 3198 021 51020 3838 Res 220 ohm 5 1 10W Metalized Gl ass 3198 021 52210 3839 Res 390 ohm 5 1 10W Metalized Gl ass 3198 021 53910 3840 Res Zero ohm Chip Jumper 3198 021 90020 3843 Res 220 ohm 5 1 10W Metalized Gl ass 3198 021 52210 3844 Res 390 ohm 5 1 10W Metalized Gl ass 3198 021 53910 3845 Res Zero ohm Chip Jumper 3198 021 90020 3848 Res 220 ohm 5 1 10W Metali...

Страница 28: ...8 T8 chassis is a global TV chassisfor the model year 2001 and is used for TV sets with screen sizesfrom 25 36 large screen in Super Flat Real Flat and Wide Screen executions The standard architecture consists of a Main panel aPicture Tube panel a Side I O panel and a Top Controlpanel In some executions a Picture In Picture PIP panel is used The Main panel consists primarily of conventional compon...

Страница 29: ...ons for video processing microprocessor μP and teletext TXT decoder are combined in one IC TDA958xH theso called Ultimate One Chip UOC This chip is surface mountedon the copper side of the LSP Page 2 of 32 SPMS 7 8 2004 ...

Страница 30: ... a Switching Mode Power Supply SMPS forthe main voltage source The chassis has a hot ground referenceon the primary side and a cold ground reference on the secondaryside of the power supply and the rest of the chassis Audio Signal Processing Block diagram Audio Stereo In stereo sets the signal goes via the SAWfilter position 1002 to the audio demodulator part of the UOCIC 7200 The audio output on ...

Страница 31: ...signal from IC 7902 is then sent to the speaker headphoneoutput panel Figure Video Signal Processing Introduction The video signal processing path consists ofthe following parts z RF signalprocessing z Video source selection z Video demodulation z Luminance Chrominance signal processing z RGB control z RGB amplifier The processing circuits listed above are all integratedin the UOC TV processor The...

Страница 32: ...s to the tuner pin 1 via the open collector output pin22 of the UOC The IC also generates an Automatic Frequency Control AFC signal that goes to the tuning system via the I 2 C bus to provide frequencycorrection when needed The demodulated composite video signal is available atpin 38 and then buffered by transistor 7201 Video source selection The Composite Video Blanking Signal CVBS from buffer 72...

Страница 33: ...t The group delay correction part can be switched betweenthe BG and a flat group delay characteristic This has the advantagethat in multi standard receivers no compromise has to be made forthe choice of the SAW filter Video demodulation The color decoder circuit detects whether thesignal is a PAL NTSC or SECAM signal The result is made knownto the auto system manager The PAL NTSC decoder has anint...

Страница 34: ...of those colors which are located in the areain the UV plane that matches the skin tone The correction is dependenton the luminance saturation and distance to the preferred axis The YUV signal is then fed to the color matrix circuit which converts it to R G and B signals The OSD TXT signal from the microprocessor ismixed with the main signal at this point before being output tothe CRT board pins 5...

Страница 35: ...l amplitude This effect is obtained by decreasing the small signal gain of thered and green channel signals which exceed this 80 level z Beam currentlimiting A beam current limiting circuit inside the UOChandles the contrast and brightness control for the RGB signals This prevents the CRT from being overdriven which could otherwisecause serious damage in the line output stage The reference usedfor...

Страница 36: ...s therefore about 2 times higherthan the normal value The on time is slowlyincreased to the nominal value in 1175 ms When the nominal valueis reached the PLL is closed in such a way that only very smallphase corrections are necessary The EHTinformation line on pin 11is intended to be used as a X ray protection When this protection is activated when the voltage exceeds 6 V the horizontal drive pin ...

Страница 37: ...internalfeedback information The voltage across this measuring resistoris proportional to the output current which is available at pins4 and 7 where they drive the vertical deflection coil connector0222 in phase opposition IC 7471 is supplied by 13 V The vertical flybackvoltage is determined by an external supply voltage at pin 6 VlotAux 50V This voltage is almost totally available as flyback volt...

Страница 38: ...lection is faster The larger the picture width the higher the deflection current throughC2456 2457 The current also results in a parabolic voltageacross C2484 2469 resulting in the fingerlength correctionproportionally increasing with the picture width The east westdrive signal will ensure the largest picture width in the centerof the frame Here the largest correction is applied East West correcti...

Страница 39: ...ature It drives the Bass_panorama line toactivate relay 1400 When this relay is switched on the capacitors2453 2454 are added in parallel to the defaultS correction capacitors 2456 2457 This results inan increased capacitance a lower resonance frequency of the linedeflection coil and the S correction capacitors and therefore aless steep S corrected line deflection current Power Supply Figure Page ...

Страница 40: ...erthe supply runs cooler and safety is enhanced The power supply starts operating when a DC voltage goes fromthe rectifier bridge via T5520 R3532 to pin 8 The operating voltagefor the driver circuit is also taken from the hot sideof this transformer The switching regulator IC 7520 starts switching the FET on and off to control the current flow through the primary winding of transformer5520 The ene...

Страница 41: ...audio circuit voltage depends on set execution see table below z 3 3 V and 3 9 V for the microprocessor and z MainSupply for the horizontaloutput voltage depends on set execution see table below Other supply voltages are provided by the LOT It supplies 50 V only for large screen sets 13 V 8 V 5V and a 200 V source for the video drive The secondaryvoltages of the LOT are monitored by the EHTinforma...

Страница 42: ...g of the Quasi Resonantbehavior it is possible to explain it by a simplified circuit diagram see Figure below In this circuit diagram the secondary sideis transferred to the primary side and the transformer is replacedby an inductance L P C D is the totaldrain capacitance including the resonance capacitor C R parasitic output capacitorC OSS of the MOSFETand the winding capacitance C W ofthe transf...

Страница 43: ...e drain voltage will rise from almost zero to V IN n V OUT V F V F is the forward voltagedrop of de diode that will be omitted from the equations from nowon The current will change its positive derivative correspondingto V IN L P to a negative derivative correspondingto n V OUT L P z Interval 3 t2 t t3 secondary stroke In thethird interval the stored energy is transferred to the output so the diod...

Страница 44: ...more energy has to be storedin the transformer This leads to longer magnetizing t PRIM and demagnetizingt SEC times whichwill decrease the frequency See the frequency versus output powercharacteristics below The frequency characteristic is not onlyoutput power but also input voltage dependent The higher theinput voltage the smaller t PRIM so the higher the frequency will be Figure Point P1 is the ...

Страница 45: ...tage V CC start 11V the IC starts driving the MOSFET Both internal current sourcesare switched off after reaching this start up voltage Resistor R SS 3524 will discharge the soft start capacitor suchthat the peak current will slowly increase This to prevent transformerrattle During start up the V CC capacitorwill be discharged until the moment that the primary auxiliary windingtakes over this volt...

Страница 46: ...tarts Anexternal Ctrl voltage of 1 425 V corresponds with an internal VCOlevel of 75 mV This fixed VCO level is called V VCO start The frequencywill be reduced in relation to the VCO voltage between 75 mV and 50mV at levels larger than 75 mV Ctrl voltage 1 425V theoscillator will run on maximum frequency f oscH 175 kHztypically At 50 mV V VCO max the frequency is reduced to the minimum level of 6 ...

Страница 47: ...t VCC will be switched on to initiate a new start upsequence as described before This Safe Restart mode will persistuntil the controller detects no faults or burst triggers Standby The set goes to Standby in the following cases z After pressingthe standby key on the remote control z When the set is in protection mode In Standby the power supply works in burstmode Burst mode can be used to reduce t...

Страница 48: ... system then enters the start upsequence and begins normal switching behavior For a more detailed description of one burst cycle threetime intervals are defined z t1 Discharge of V CC when gate drive is active During thefirst interval energy is transferred which result in a ramp upof the output voltage V STAB in front of the stabilizer When enough energy is stored in thecapacitor the IC will be sw...

Страница 49: ...ture guarantees discontinuous conductionmode operation in every situation The oscillator will not starta new primary stroke until the secondary stroke has ended Thisis to ensure that FET 7521 will not turn on until the demagnetization oftransformer 5520 is complete The function is an additional protectionfeature against z saturationof the transformer z damage of the components during initial start...

Страница 50: ...ltage exceeds the OVP trip level theOVP circuit switches the power MOSFET off Next the controller waits until the under voltagelock out level UVLO 9 V is reachedon pin 1 V CC This is followed by a safe restart cycle after which switchingstarts again This process is repeated as long as the OVP conditionexists The output voltage at which the OVP function trips is setby the demagnetization resistor R...

Страница 51: ...o current spikes This delay determines the minimum on timeof the controller Over Temperature protection When the junction temperature exceeds the thermalshutdown temperature typ 140º C the IC will disablethe driver When the V CC voltagedrops to UVLO the V CC capacitorwill be recharged to the V start level If the temperature is still too high the V CC voltage will drop againto the UVLO level Safe R...

Страница 52: ...which consists ofthe microprocessor part of the UOC 7200 is linked to the externaldevices tuner NVM MSP etc by means of the I 2 C bus An internalI 2 C bus is usedto control other signal processing functions like video processing sound IF vision IF synchronization etc User Interface The S8 T8 uses a remote control withRC5 protocol The incoming signal is connected to pin 67 of theUOC The Top Control...

Страница 53: ...r can be activated by the othertwo control lines Power Supply Control The microprocessor part is supplied with 3 3V and 3 9 V both derived from the MainAux voltagevia a 3V3 stabilizer 7560 and a diode Two signals are used to control the power supply z Stdby_con This signalis generated by the microprocessor when over current takes placeat the MainAux line This is done to enablethe power supply into...

Страница 54: ... will conduct and pin 80 of the UOC will be pulled down Thereafter the UOC will shut down the power supply In case of further currentincrease the fused resistor 3411 is built in for double protection In case of a high voltage appearing across capacitor 2401 dependent of the tube size which is high enough to trigger zenerdiode 6401 into conduction transistor Q7606 in A7 diagram willconduct and UOC ...

Страница 55: ...ng from the USA and used e g inLATAM and AP NTSC countries B TXT Blue teletext CC Closed Caption ComPair Computer aided rePair CRT Cathode Ray Tube or picture tube CSM Customer Service Mode CTI Colour Transient Improvement manipulates steepnessof chroma transients CVBS Composite Video Blanking and Synchronisation DAC Digital to Analogue Converter DBE Dynamic Bass Enhancement extra low frequency am...

Страница 56: ... CRT FLASH Flash memory FM Field Memory FM Frequency Modulation HA Horizontal Acquisition horizontal sync pulse comingout of the HIP HFB Horizontal Flyback Pulse horizontal sync pulse fromlarge signal deflection HP Headphone Hue Colour phase control for NTSC not the same as Tint I Monochrome TV system Sound carrier distance is 6 0MHz I2C Integrated IC bus IF Intermediate Frequency IIC Integrated I...

Страница 57: ...mainly used in North America and Japan Colour carrier NTSC M N 3 579545 MHz NTSC 4 43 4 433619 MHz this is a VCR norm it is not transmittedoff air NVM Non Volatile Memory IC containing TV related datae g alignments OB Option Byte OC Open Circuit OSD On Screen Display PAL Phase Alternating Line Colour system mainly used inWest Europe colour carrier 4 433619 MHz and South America colour carrier PAL ...

Страница 58: ... pulse derived from sync signals S C Short Circuit SCAVEM Scan Velocity Modulation SCL Serial Clock SDA Serial Data SDM Service Default Mode SECAM SEequence Couleur Avec Memoire Colour system mainlyused in France and East Europe Colour carriers 4 406250MHz and 4 250000 MHz SIF Sound Intermediate Frequency SS Small Screen STBY Standby SVHS Super Video Home System SW Software THD Total Harmonic Dist...

Страница 59: ...ge mostly141 V V chip Violence Chip VCR Video Cassette Recorder WYSIWYR What You See Is What You Record record selection thatfollows main picture and sound XTAL Quartz crystal YC Luminance Y and Chrominance C signal Page 32 of 32 SPMS 7 8 2004 ...

Страница 60: ... Test points overview CRT Panel Test Points The chassis is equipped with test points printedon the circuit board assemblies These test points refer to thefunctional blocks Table TestpointOverview Test point Circuit Diagram A1 A2 A3 Audio processing A8 A9 A11 C1 C2 C3 Control A7 F1 F2 F3 Frame drive and output A3 I1 I2 I3 Tuner IF A4 L1 L2 L3 Line drive and output A2 P1 P2 P3 Power supply A1 S1 S2 ...

Страница 61: ...tures for the service technician while the CustomerService Mode CSM is used for communication between the servicer andthe customer The T8 chassis also offers the option of using ComPair a hardware interface between a computer and the TV chassis It offersthe abilities of structured troubleshooting error code reading and software version readout for all T8 chassis Minimum requirementsfor ComPair a 4...

Страница 62: ...y TDA9577 SS 55K ROM Size Mono Magnavox 3US2 L01UN2x y TDA9577 SS LS 55K ROM Size Stereo non dBx Magnavox 1US5 L01US5x y TDA9588 LS 64K ROM Size Stereo non dBx Magnavox Non PIP 2US2 L01UM2x y TDA9577 LS 55K ROM Size Mono Philips 3US3 L01UN3x y TDA9577 SS LS 55K ROM Size Stereo non dBx Philips CVI 1US4 L01US4x y TDA9587 SS TDA9588 LS 64K ROM Size Stereo non dBx Philips PIP Abbreviations in Software...

Страница 63: ... SDAM To enter SDAM use one of the following methods z Press thefollowing key sequence on the remote control transmitter z 0 6 2 5 9 6 MENU z Do not allow the display to time out betweenentries while keying the sequence z Short jumper wires 9631 and 9641 on the monocarrier see Fig 8 1 and apply AC power Then press the power button remove the short after start up Caution Entering SDAM by shorting w...

Страница 64: ...gnment Mode 4 Error Buffer Showsall errors detected since the last time the buffer was erased Fiveerrors possible 5 Option Bytes Usedto set the option bytes See Options in the Alignments sectionfor a detailed description Seven codes possible 6 Clear Erasesthe contents of the error buffer Select the CLEAR menu item andpress the MENU RIGHT key The contents of the error buffer are cleared 7 Options U...

Страница 65: ...e SDAM menu press the STATUS EXITbutton z When you press the MENU key in while in an SDAM submenu you will return to the previous menu How to store SDAM settings To store settings changed in SDAM leave thetop level SDAM menu by using the POWER button on the remote control transmitteror the television set How to exit SDAM Switch the set to STANDBY by pressing the POWERbutton on the remote control t...

Страница 66: ...ice Mode 2 Reserved 3 Software identification of the main microprocessor see Service Default Alignment Mode for an explanation 4 Reserved item 5 Indicates the type of TV system or whether ornot the television is receiving an IDENT signal on the selected source If no IDENT signal is detected the display will read NOT TUNED 6 Error code buffer Displays the last five errorsdetected in the error code ...

Страница 67: ...o enterthe PICTURE sub menu 5 Use the MENU UP DOWN keys if necessary to select BRIGHTNESS 6 Press the MENU LEFT RIGHT keys to increaseor decrease the BRIGHTNESS value 7 Use the MENU UP DOWN keys to selectPICTURE 8 Press the MENU LEFT RIGHT keys to increaseor decrease the PICTURE value 9 Press the MENU button on the remote controltransmitter twice to exit the user menu 10 The new PERSONAL preferenc...

Страница 68: ...ine 6 theError Buffer line will contain error number 10 Check the tunerand replace repair the tuner if necessary Black and white picture If z The pictureimproves after you have pressed the Smart Picture button on theremote control transmitter Then 1 Press theAUTO PICTURE button on the remote control transmitter repeatedly if necessary to choose PERSONAL picture mode 2 Press the MENU button on the ...

Страница 69: ...ips Consumer Electronics products ComPair is a further developmentof the DST special remote control transmitter for Service whichallows faster and more accurate diagnostics ComPair has three bigadvantages z ComPair helpsyou quickly get an understanding on how to repair the chassis ina short time by guiding you systematically through the repair procedures z ComPair allows very detailed diagnostics ...

Страница 70: ...e Measure test point I7 and click on the correct oscillogramyou see on the oscilloscope You can answer by clicking on a link for example text or a waveform picture that will bring you tothe next step in the faultfinding process By a combination of automatic diagnostics and an interactive questionand answer procedure ComPair will enable you to find most problemsin a fast and effective way Beside fa...

Страница 71: ... lightup together The red LED turns off after approximately 1 second while the green LED remains lit 8 Start the ComPair program and read the introduction chapter Figure ComPair Connection How To Order ComPair order codes z ComPair InterfaceBox 4822 727 21631 z CDR Interface board 3122 785 90200 z TV cable 3122 785 90004 z DVD cable 3122 785 90017 z BETA CALIBRATION DISK 7104 099 93132 z Extra Com...

Страница 72: ...6 MENU Do not allow the display to time out betweenentries while keying the sequence Make sure the menu item CLEAR is highlighted Use the MENU UP DOWN buttons if necessary Press the MENU RIGHT button to clear the error buffer The text on the right side of the CLEAR line will change from CLEAR to CLEARED z If the contents of the error buffer have notchanged for 50 hours the error buffer resets auto...

Страница 73: ... I2C identification error 7831 7861 A9 or A11 5 TDA95XX POR 3 3V 8V Protection 7200 7560 7480 A1 A2 A5 A6 A7 6 I2C bus General I2C bus error 7200 3624 3625 A7 7 Not applicable 8 Not applicable E W Protection Large Screen 7400 3405 3406 3400 A2 9 M24C08 NVM I2C identification error 7602 3611 3603 3604 A7 10 Tuner Tuner I2C identification error 1000 7482 A2 A4 11 TDA6107 8 Black current loop protect...

Страница 74: ... 3 seconds z 6 short blinks followed by a pause of 3 seconds z 1 long ON blink of 3 seconds to finish thesequence z the sequence starts again Protections If a fault situation is detected an errorcode will be generated and if necessary the television set willgo in to protection mode Blinking of the red LED at a frequencyof 3 Hz indicates the protection mode In some error cases themicroprocessor doe...

Страница 75: ... same time measure the 8V supply If this voltage is missing check transistor7480 z Set is in non stophiccup mode Set is in over current mode check the secondary sensing optocoupler 7515 and the Main Power Supply voltage Signal Stdby_con must be logic low under normal operation conditions and goes tohigh 3 3 V under standby and fault conditions z Set turns on but without picture and sound The scree...

Страница 76: ...he AC power cord 2 Remove the main panel by pushing the two centerclips outward 1 At the same time pull the panelaway from the CRT 2 3 Disconnect the degaussing coil by removing thecable from red connector 0201 4 Turn the panel 90 degrees counter clockwise 3 5 Flip the panel 90 degrees 4 with the components towards the CRT 6 Turn the panel with the rear I O towardsthe CRT 5 7 Slide the metal heats...

Страница 77: ...Figure Page 2 of 7 SPMS 7 8 2004 ...

Страница 78: ...nel bracket from the bottom tray by pulling it backward 2 and turn the chassistray 90 degrees counter clockwise 4 Move the panel somewhat to the left and flipit 90 degrees 3 with the components towardsthe CRT 5 Turn the panel with the rear I O towardsthe CRT 6 Place the hook of the tray in the fixation holeof the cabinet bottom 4 and secure it Page 3 of 7 SPMS 7 8 2004 ...

Страница 79: ...Page 4 of 7 SPMS 7 8 2004 ...

Страница 80: ...ease the 2 fixation clamps and lift the boardout of the bracket Figure Pip Module If Present Service Position 1 Removethe module bracket from the bottom tray by pulling it backward 2 Hook the bracket in the first row of the cabinetbottom In other words reposition the bracket from 1 to 2 Page 5 of 7 SPMS 7 8 2004 ...

Страница 81: ...Figure Panel Removal 1 Liftthe board out of its bracket after releasing the 2 fixation clamps Figure Rear Cover Mounting Page 6 of 7 SPMS 7 8 2004 ...

Страница 82: ...lowing checks 1 Check whetherthe AC power cord is mounted correctly in its guiding brackets 2 Replace the strain relief of the AC power cordinto the cabinet 3 Check whether all cables are replaced in theiroriginal position Page 7 of 7 SPMS 7 8 2004 ...

Страница 83: ...AMILIARIZE 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 Manual 7629 Model no 27PS60S321 First Publish 12740 T8 Rev Date 2...

Страница 84: ...27PS60S321 7629 Page 1 P 1 P 2 P 3 P 4 P 5 P 6 L 1 L 2 L 3 L 5 L 6 L 7 L 8 L 9 L10 L11 F 1 F 2 F 3 F 4 ...

Страница 85: ...27PS60S321 7629 Page 2 I 1 I 2 I 3 I 4 V 1 V 2 V 3 V 4 V 5 V 6 V 7 V 8 V 9 V10 S 1 S 2 S 3 S 4 S 5 C 1 ...

Страница 86: ...27PS60S321 7629 Page 3 C 2 C 3 C 4 C 5 A 1 A 2 A 3 A 4 A 5 A 6 A 7 A 8 A 8a A 9 A10 A11 A11a A12 A13 A14 ...

Страница 87: ...27PS60S321 7629 Page 4 A15 A16 C 6 V20 V21 V22 V11 V12 V13 V14 V15 V16 ...

Страница 88: ...27PS60S321 7629 PCB Locations Page 1 of 30 ...

Страница 89: ...27PS60S321 7629 Power Supply Diagram A1 Page 2 of 30 ...

Страница 90: ...27PS60S321 7629 Line Deflection Diagram A2 Page 3 of 30 ...

Страница 91: ...27PS60S321 7629 Frame Deflection Diagram A3 Page 4 of 30 ...

Страница 92: ...27PS60S321 7629 Tuner IF Diagram A4 Page 5 of 30 ...

Страница 93: ...27PS60S321 7629 Video IF And Sound IF Diagram A5 Page 6 of 30 ...

Страница 94: ...27PS60S321 7629 Synchronization Diagram A6 Page 7 of 30 ...

Страница 95: ...27PS60S321 7629 Control Diagram A7 Page 8 of 30 ...

Страница 96: ...27PS60S321 7629 Audio Amplifier Diagram A8 Page 9 of 30 ...

Страница 97: ...27PS60S321 7629 BTSC Stereo SAP Decoder Diagram A9 Page 10 of 30 ...

Страница 98: ...27PS60S321 7629 Audio Video Source Switching Diagram A10 Page 11 of 30 ...

Страница 99: ...27PS60S321 7629 BTSC NDBX Stereo Decoder Diagram A11 Page 12 of 30 ...

Страница 100: ...27PS60S321 7629 Front I O Control Headphone Diagram A12 Page 13 of 30 ...

Страница 101: ...27PS60S321 7629 Rear I O Cinch Diagram A13 Page 14 of 30 ...

Страница 102: ...27PS60S321 7629 PIP Interface Diagram A16 Page 15 of 30 ...

Страница 103: ...27PS60S321 7629 CRT Panel Diagram B1 Page 16 of 30 ...

Страница 104: ...27PS60S321 7629 Side AV and Headphone Panel Diagram C Page 17 of 30 ...

Страница 105: ...27PS60S321 7629 PIP Panel Diagram P Page 18 of 30 ...

Страница 106: ...27PS60S321 7629 Main Panel component side Page 19 of 30 ...

Страница 107: ...27PS60S321 7629 Main Panel copper side Page 20 of 30 ...

Страница 108: ...27PS60S321 7629 CRT Panel component side Page 21 of 30 ...

Страница 109: ...27PS60S321 7629 CRT Panel copper side Page 22 of 30 ...

Страница 110: ...27PS60S321 7629 Headphone Panel component side Page 23 of 30 ...

Страница 111: ...27PS60S321 7629 Side AV Panel component side Page 24 of 30 ...

Страница 112: ...27PS60S321 7629 PIP panel component side Page 25 of 30 ...

Страница 113: ...27PS60S321 7629 PIP panel copper side Page 26 of 30 ...

Страница 114: ...27PS60S321 7629 Top Control Panel component side Page 27 of 30 ...

Страница 115: ...27PS60S321 7629 EPS Panel PCB Top View only Page 28 of 30 ...

Страница 116: ...27PS60S321 7629 Card Interface Panel PCB Top View Page 29 of 30 ...

Страница 117: ...27PS60S321 7629 Card Interface Panel PCB Bottom View Page 30 of 30 ...

Страница 118: ...Directions For Use DFU For Customer Operating Instructions please visit our web site www p4c philips com Page 1 of 1 Directions For Use DFU s 7 8 2004 ...

Страница 119: ...onnector with wires to the deflectioncoil other components through which the deflectioncurrent flows Note This re soldering is advised to prevent bad connections dueto metal fatigue in solder connections and is therefore only necessaryfor television sets more than two years old z Route thewire trees and EHT cable correctly and secure them with the mountedcable clamps z Check the insulation of the ...

Страница 120: ... or moisture levels for example in a kitchen the recommended interval is one year z The maintenance inspection includes the followingactions 1 Perform the generalrepair instruction noted above 2 Clean the power supply and deflection circuitryon the chassis 3 Clean the picture tube panel and the neck ofthe picture tube Warnings z Inorder to prevent damage to ICs and transistors avoid all high volta...

Страница 121: ... any short circuits and the dangerof a circuit becoming unstable Notes z Measurethe voltages and waveforms with regard to the chassis tuner ground or hotground 0 depending onthe area of circuitry being tested z The voltages and waveforms shown in the diagramsare indicative Measure them in the Service Default Mode see chapter5 with a color bar signal and stereo sound L 3 kHz R 1 kHzunless stated ot...

Страница 122: ...5 MHz z Sound systems FM mono M 4 5 MHz BTSC DBX 4 5 MHz z A V connections NTSC M 3 58 4 5 MHz z Channel selections 181 channels full cable z IF frequency 45 75 MHz z Aerial input 75 Ω Coax Feature Data z AC voltage 90 140 V 10 z AC frequency 60 Hz 5 z Ambient temperature 5 to 45 deg C z Maximum humidity 90 z Power consumption 36 W 14 100 W 32 Page 1 of 4 SPMS 7 8 2004 ...

Страница 123: ...Front Or Side Connections Figure Audio Video In z Standby Power consumption 3 W Connector Kind Value Symbol 1 Video 1 Vpp 75 Ω 2 Audio L 0 2 Vrms 10 kΩ 3 Audio R 0 2 Vrms 10 kΩ 4 Headphone 3 5 mm 8 600 Ω 4 mW Page 2 of 4 SPMS 7 8 2004 ...

Страница 124: ...e Symbol 1 Video 1 Vpp 75 Ω 2 Audio L 0 5 Vrms 1 kΩ 3 Audio R 0 5 Vrms 1 kΩ Connector Kind Value Symbol 1 Y 0 7 Vpp 75 Ω 2 U 0 7 Vpp 75 Ω 3 V 0 7 Vpp 75 Ω Connector Kind Value Symbol 4 Video 1 Vpp 75 Ω 5 Audio L 0 5 Vrms 10 kΩ 6 Audio R 0 5 Vrms 10 kΩ Page 3 of 4 SPMS 7 8 2004 ...

Страница 125: ...2 In SVHS Connector Kind Value Symbol 1 Video 1 Vpp 75 Ω 2 Audio L 0 5 Vrms 10 kΩ 3 Audio R 0 5 Vrms 10 kΩ Connector Kind Value Symbol 1 gnd 2 gnd 3 Y 1 Vpp 75 Ω 4 C 0 3 Vpp 75 Ω Page 4 of 4 SPMS 7 8 2004 ...

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