Philips PTV400 series Service Manual Download | Manualshive

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Summary of Contents for PTV400 series

Page 1: ...merica s RepairSpecelists 57211093 PHILIPS PTV400 Series In Home Service Guide Projection Television Dept 702PSO 1993 Sears Roebuck and Co Printed in U S A 10 93 S T T S Informatiq Category Ma 702PSTEC13 5721 ...

Page 2: ... 16 Focus Adjustments Electrical and Optical 16 Screen G2 Adjustment Procedure 17 Gray Scale Tracking Sub Brightness Adjustment Procedure 18 Screen Geometric And Centering Adjustments 19 Green Screen Geometry Adjustments 19 Blue Screen Convergence Procedure 20 Red Screen Convergence Procedure 20 Programming Factory Default Values 21 Test Mode Entry and Exit 21 Adjustment of Registers in Test Mode ...

Page 3: ...fferences in these sets include Multi PIP Picture in Picture AVIO Audio Video Input Output Jack Panel and many Audio System options The new P V features the TS 2D Tuning System Figure 7 The TS 2D Tuning System is an On Screen Total Remote Menu Driven Tuning System The Tuning System is mounted on the Signal Deflection High Voltage Module The Microcomputer for the Tuning System communicates via an 1...

Page 4: ...ng from the voltage applied through R416 to IC401 16 As the Standby Power Supply comes up to full operation 5 approximately 12Vdc is provided via Diode D405 to the Controller IC for the continuing source voltage A 15V Standby Source is used as the source for the 5V Regulator IC408 The Standby Power Supply runs all the time the chassis is connected to the AC Power Source A square wave signal exits ...

Page 5: ...l turn On and shut the set down SECTION 2 Troubleshooting the PTV System Access To gain access to the various Modules and Panels in the PTV proceed as follows Convergence Panel CRT Boards and Yokes gently pull off the two plastic railings on either side of the Customer Keyboard Next remove the speaker grille Now remove the screws holding the Convergence Panel and place it into the service position...

Page 6: ... blanking will occur If the 15 Volt supply is not high enough Z500 will not be conducting voltage less than 10 volts and Q5OO will not be turned On The collector of Q5OO will be Low and the high voltage will be shutdown and video blanking will occur The high voltage is shut down because the base of Q502 is Low and the emitter of Q502 pulls down the high voltage Stow Start capacitor C911 Video Trou...

Page 7: ...back the top cover of the shield to gain access to the internal circuitry 11 2 Short Test Points 16A 16B together at the bottom of the UN Tuner 3 Short Test Point 23 Pin 13 of IC200 to ground Shield around It200 is good 4 Connect a DC Voltmeter to Test Point 7 Pin 18 of IC200 5 Turn the set On and record the voltage reading from Test Point 7 typically 4 5 to 5 0Vdc 6 Turn Off the set and remove bo...

Page 8: ...a reading of 15 734kHz on the counter 7 Disconnect test equipment and remove the short from TP67 Note Some Frequency Counters may be too sensitive at one attenuation level and not sensitive enough at the other level In this case an oscilloscope may be used Adjust R902 to obtain a 63 5uSec delay from the leading edge of the first main vertical pulse to the leading edge of the second main vertical p...

Page 9: ...iation 4 5MHz carder to Test Point 15 2 Connect a DC Voltmeter to Test Point 64 15 3 With only 4 5MHz no pilot applied read and record the DC voltage at Test Point 64 4 Apply pilot input and adjust R122 until the DC voltage difference between the pilot and no pilot condition is 0Vdc 25mV 5 Read the DC voltage at Test Point 59 If the DC voltage is less than 1V proceed to Separation Adjustment If th...

Page 10: ...ether 8 Connect a 2 4K resistor from Pin 6 of the J Test Connector to Pin 3 Red of the same J Test Connector this forces the Red cathode to 195Vdc 9 Adjust the Red G2 bottom row left to just barely tum On the Red CRT 10 Now do the same for the Green Output by connecting the same 2 4K resistor from Pin 6 of the J Test Connector to Pin 4 Green Then adjust it s G2 Control bottom row middle while view...

Page 11: ...the Yoke visually adjust the vertical Skew 19 4 Re tighten the Yoke clamp 5 Remove ONLY the lower Setup Pin jumper enabling the Convergence Panel controls Do not remove the other jumpers at this time keep Customer Controls disabled 6 Select the crosshatch pattern 7 Adjust the Vertical Size R551 on the Signal Deflection Module for approximately 3 4 overscan at the top and bottom of the screen viewe...

Page 12: ...ode when power is reapplied Depressing the keyboard PWR button will exit the Test Mode and turn Off the chassis Adjustment of Registers in Test Mode When the receiver is operating in a Test Mode all normal On Screen displays are suppressed and replaced by a special Test Mode display This display has two lines of information at the bottom of the screen The first line of text has the version of soft...

Page 13: ...FH SGS Clock Calibration System Information Diagnostics While in Test Mode C depressing the STATUS button will replace the bottom line of channel mode register data with a list of letters identifying those subsystems which could be present but DID NOT respond to Microcomputer commands when the Test Mode command was first acted upon A R F Switch Accessory B Tuner Control C Clock Calendar D EEPROM E...

Page 14: ... 4 SIMPLIFIED DRAWINGS SCREEN ASSEMBLY SPEAKER CONVERGENCE PANEL A10435A001 4835 21_77382_ CRT s CUSTOMER KEYBOARD _r _386 APTO96AO01 APTIOOAO01 _483_97 CRT SOARDS i I I L SPEAKER FIGURE 1 PTV410 FrontView 25 ...

Page 15: ...7353 i __ I r i i AVIO JACK PANEL AVJ108A001 4835 219 77367 SIGNAL DEFLECTION HIGH VOLTAGE MODULE EMV101A001 4835 219 97105 POWER SUPPLY MODULE APW034A001 4835 219 77389 FOCUS G2 DISTRIBUTION BLOCK 220493 3 4835 101 97018 26 FIGURE 2 PTV410 RearView ...

Page 16: ...SCREEN ASSEMBLY SPEAKER CRT s APT100A001 4835 21 _ 77386 APT096A001 CRT_ BOARDS i _ CONVERGENCE PANEL A10435A001 4835 21_77382_ CUSTOMER KEYBOARD SPEAKER FIGURE 3 PTV420 FrontView 27 ...

Page 17: ...AMPO17A001 4835 219 573 53 I L_ L AVIO JACK PANEL AVJ109A001 4835 219 77368 SIGNAL DEFLECTION HIGH VOLTAGE MODULE EMV102A001 4835 219 971 36 i POWER SUPPLY MODULE APW034A001 4835 219 77389 FOCUS G2 DISTRIBUTION BLOCK 22049_3 4835 101 97018 FIGURE 4 PTV420 RearView 28 ...

Page 18: ...OARD I D _ I SPEAKER CONVERGENCE PANEL A10435A001 4835 219 77382 CRI s st _ a APT098C003 4835 219 77409 APT099C003 4835 219 77411 4835 219 77412 CRT _ _ _ BOARDS r _ _ _ _ _ _ _ _ _ _ rl _tll 1l SPEAKER TWEETER FIGURE 5 PTV430 FrontView 29 ...

Page 19: ...19 77383 AVIO JACK PANEL AVJ110A001 4835 219 77369 J SIGNAL DE FLECTION HIGH VOLTAGE MODULE EMV103A001 4835 219 97107 FOCUS G2 DISTRIBUTION BLOCK 220493 3 4835 10 97018 2X12 5W POWER AMp SUPPLY AMPO19AfX I APW03_ _03 2_ 77375 4835 219 7i413 I I_ OWER SUPF_Y FOR 100W AUDIO AMp APW036B_O2 4835 219 77377 30 FIGURE 6 PTV430 RearView ...

Page 20: ..._ 4s_ _ v_o r l I I I _ _ _ _ _ _ FIGURE 7 PTV400 Block Diagram 31 ...

Page 21: ... 5v 155VDC I 401 FULL POWER REGULATOR 3 1V I Glo _7S IC401 DUAL CONTROLLER 2 3V m L R416 15 T_2 STANDBY F 84 1 t B TRANSFORMER _ vJ G _ Itfl I I S R469 13 5V 12V IN _ 15V _ 9v IN 26V 8 9 15V STBY 5V REG 13 5V _1 r 10 IC402 CONTROL 5V STBY 130V ADJUST 7 3 5V 9 3 4V 41 UNDERVOLTAGE 1 3V OVERVOLTAGE lb RESET 16 POWER ON OFF 12 FIGURE 8 PTV Power Supply Module Block Diagram 32 ...

Page 22: ..._ V A _TBy RESET 15V B ISV B _rB_ 13_ GROUND FROM ANTENNA INPUT P402 _ YELLOW PLUG _03 WHITE PLUG 404 RED PLUG J406 TO AUDIO AMP k P467 J467 P462 J462 P BOAR_ POWER SUFf_Y TO POWER AMP SMPS 3461 NIEU o SOU_RED _V2 v_3 _ 4 v P46_ P O_R ON IjTO t2 5_N I AMP k FIGURE 9 PTV400 Power Supply Connections 33 ...

Page 23: ... y O_ ER TF jS W_4 WX_ _ E F_OU_CY _ECK iw 0901 q_ S _UTDOe_ Tgo0 HV _F_qU_R I wl VEP_ TO F_CTURE TUBES SMD SURFACE MOUNTED DEVICE R_3 _ HKU4 _LTAGE ADJ_T i _ GH VOLTAGE 34 FIGURE 10 PTV400 Shutdown Circuitry ...

Page 24: ..._ R_g T_4 0703 RBOVR SUB CGNT I_PS_ I_SV _02_ _VMOV R _ _ _14 TIler ST OFF L L L _04 _401 L PROCESSOR I _ TI_ LEFT OUT I _JI u_ _ _ _I c_z T 01 _Isc _c _ out OsO_ _ A i _ Y BUFF _ _ Y_ UP TUNER H _jL_ E _DEO J TEST Rm RUg 8LR_ _ Hk J620 10 HGT RED LL GF4_N LL BLUE LL HV _p4 o I J TPllB ICg01 I HOT DVR VERT _R _ TPS _I_DTH J511 r_ 0 0 0 0 0 O o _ _ __ J_O JS0t FIGURE 11 PTV400 Signal Deflection Mod...

Page 25: ..._ Sg_ TUNER VIDEO G_ AUXVIDEO J610 _ J466 4 4 J410 D BOARD AVIO JACK PANEL J275 d2_ k _ITIENCCA INRJT D250 RIGHTSPEAKER NOCONNECTION GND 4 GND LEFTSPEAKER 466 SCL 1 SDA J GND LEFTOUT GND RIGHTOUT I 15 STANDOY 14V D275 GND 4 PRO_OGIC RIGHT 4 GND q PRO4 OGIC LEFT 276 SUO WOOFER _52 RIGHTSS e N0 _ TO PRO LOGIC BOARD FROM PRO L X IC BOARD FROM PRO LOGIC BOARD FROM 12 SW CH AMP KEY VOLT _ ESOU_E l SIGN...

Page 26: ...D DRIVE GNC YELLOW GREEN DRIVE PLUG GND BLUE DRIVE N BOARD RED CRT RED PLUG J_ E BOARD A401 E401 220V NO CONNECTION 130VoB FILAMENT FILAMENT 20V SVMb_ H01 GREENCRT YELLOW PLUG J525 J577 J576 J575 WHITE J581 PLUG SCREEN I_ __ _ FOCUS i _ 0 II _ J o_ 0658 9_e_ 7 r_4 FOCUS _f WHITE J582 PLUG SCREEN O BOARD BLUE CRT RGURE 15 PTV400 CRT Connections DAG _BLUESVM I_GREENSVM _RED SVM DAG DAG 39 ...

Page 27: ... 77367 A BOARD SIGNAL DEFLECTION MODULE 00EMV101 4835 219 97105 L BOARD 5 WATt CHANNEL AMP 00AMP017 4835 21 9 57353 N BOARD I RED CRT 00APT096 4835 219 77387 E BOARD GREEN CRT 00APT095 4835 219 77386 O BOARD BLUE CRT 00APTt00 4835 219 77388 FOCUS G2 DISTRUBUTION BLOCK 220493 3 4835 101 97018 R BOARD CONVERGENCE MODULE 00A10435 4835 219 77382 FIGURE 16 PTV410 Simplified Diagram 40 ...

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