Philco-50-T1403-Sams-115-8电路原理图.pdf

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1、PlIOTOFACT* Folder PHILCO MODELS 5O-T14O3 (Code 125) 5O-T14O4, 5O-T14O6 (Codes 123,124,125), 50-T1432 (Code 124) VOLUME CONTROL HORIZONTAL (IN (IFF SWITCH HOLD VERTICAL CONTROL HOLD BRIGHTNESS pnMT-D., CONTROL CONTROL ffiSSF bUNIKUL FINE TUNING SELECTOR SWITCH PHILCO MODEL 50-T1404 (Code 125) TRADE

2、NAME Philco, Models 50-T1403 (Code 125), 50-T1404 (Codes 123,124,125), 50-T1406 (Codes 123,124,125) 50-T1432(124) MANUFACTURER Philco Corp., Tioga and C Streets, Philadelphia, Pa. TYPE SET Television Receiver TUBES Twenty One POWER SUPPLY 110-120 Volts AC-60 Cycle TUNING RANGE-Channels 2 thru 13 RAT

3、ING 2 Amp. at 117 Volts AC INDEX Alignment Instructions 6, 7, 8 Disassembly Instructions 8 Fine Tuning Drive Cord Stringing 16 Horiz. Sweep Circuit Adjustment 18 Parts List and Description 13 thru 16 Photographs Cabinet-Rear View16 Capacitor Identification 12,17 Chassis-Top View 5 Photographs (conti

4、nued) RF Tuner 11 Resistor Identification 19, 20 Trans., Inductor and Alignment Identification 4,9 Schematic (Main) 2 Schematic (Turret Type Tuner) 18 Tube Placement Chart 3 Voltage and Resistance Measurements 10 Ul p * n O o O* V ? 0.0 SK io ui Ul 8.2 ffl * HOWARD W. SAMS 2 / /f / / / / /, J J J J

5、J J J J J J J HH |7Fe B rr L-?T|- !7Fe or 11 mi 11111 in 111 nil/ /T/ THE COOPERATION OF THE MANUFACTURER OF THIS RECEIVER MAKES IT POSSIBLE TO BRING YOU THIS SERVICE T STANDARD NOTATION SCHEMATIC Howard W. Sams AC Voltage measured at 1,000 2. Pin numbers are counted in a clockwise direc- tion on bo

6、ttom of socket. 3. Measured values are from socket pin to com- mon negative unless otherwise stated. 4. Line voltage maintained at 117 volts for volt- age readings, 5. Front panels controls set at minimum. 6. Where readings may vary according to the setting of the service controls, both minimum and

7、maximum readings ore given. RadioFans.CN TAPERED LINE TUNER-RIGHT SIDE TAPERED LINE TUNER-LEFT SIDE PAGE 11 RadioFans.CN CHASSIS BOTTOM VIEW-CAP PAGE 12 RadioFans.CN -CAPACITOR IDENTIFICATION m O Sfj o O _, to K) 01 w o to m n Ui (D O _, Oi CJ so Ul O -I O - a. J PAGE 17 RadioFans.CN PARTS LIST AND

8、DESCRIPTIONS TUBES (SYLVANIA or Equivalent) ITEM No. VI V2A B V3 V4 V5 V6 V7 V8 V9 V10 VILA B V12 V13 V14 V15A B V16A B V17 V18 VI 9 V20 V21 USE RF Amplifier Converter Converter 1st Video IF Amp. 2nd Video IF Amp. 3rd Video IF Amp. 4th Video IF Amp. Video Det. - AGC Reel. -Video Amp. Video Output 1s

9、t Sound IF Amp. 2nd Sound IF Amp. Ratio Det. -AF Amp Ratio Det. - AF Am Audio Output Sync Amp. ; 3 3 3 RadioFans.CN IRIPTIONS (Continued) IDENTIFICATION CODES AGC Diode Load AGO Network Peaking Coil Shunt - See note 5. Video Amp. Grid Video Det. Diode Load Voltage Divider Peaking Coil Shunt Video Am

10、p. Plate Video Output Grid Video Output Cathode Voltage Divider Bleeder - See note 3. Voltage Divider Video Output Screen Peaking Coil Shunt Video Output Plate Video Output Plate Low Pass Filter Voltage Divider Picture Tube Grid Voltage Divider 1st Sound IF Grid 1st Sound IF Cathode 1st Sound IF Dec

11、oupling Decoupling 2nd Sound IF Grid Voltage Divider 2nd Sound IF Decoupling Balancing Balancing Ratio Det. Diode Load De-emphasis AF Amp. Grid Bias Network - See note 4. Bias Network Bias Network AF Amp. Plate Tone Compensation Audio Output Grid Bias Network Decoupling - Wire Wou nd Decoupling Feed

12、back Feedback Sync Amp. Grid Sync Amp. Plate Decoupling Centering Network - See note 3. Phase Shifting Isolation Sync Separator Grid Voltage Divider Sync Separator Plate Voltage Divider Sync Phase Inverter Grid Sync Phase Inverter Plate - See note 6. Sync Phase Inverter Plate - See note 7. Sync Phas

13、e Inverter Plate Decoupling - See note 8. Integrator Network Integrator Network Integrator Network Voltage Divider Vert. Oscillator Grid Vert. Hold Control Shunt - See note 9. Vert. Oscillator Plate Vert. Peaking Vert. Amp. Grid Vert. Amp. Cathode Horiz. AFC Grid - See note 10. Horiz. AFC Filter Net

14、work - See note 11. Horiz. AFC Filter Network Horiz. AFC Cathode - See note 12 . Horiz. AFC Cathode - See note 13. Feedback - See note 10 Voltage Divider - See note 11. Voltage Divider Voltage Divider - See note 14. Voltage Divider - See note 15. Filter Horiz. Oscillator Grid - See note 11. Horiz. O

15、scillator Transformer Shunt - See note 16. Horiz. Oscillator Plate See note 17 . Horiz. AFC Filter Network - See note 18. Parasitic Suppressor Horiz. Output Grid Horiz. Output Screen - Wire Wound High Voltage Rectifier Filament - Wire Wound High Voltage Filter Filter Focus Coil Shunt Bias Network -

16、Wire Wound el to obtain required resistance and wattage. ation. i this application. i this application. :ation. tain required resistance and wattage. in this application. n this application, ure compensating resistor in this application. i this application. . this application, .his application. in t

17、his application. TRANSFORMER (POWER) ITEM No. Tl RATING PRI. 117VAC 2A SEC. 1 750VCT . 260ADC SEC. 2 5VAC 3A SEC. 3 6. 3VAC 1.7A SEC.T 6. 3VAC 7. 6A REPLACEMENT DATA PHILCO PART No. 32-8423-2 STANCOR PART No. P-6315 P-5014 MERIT PART No. P-3059 CHICAGO PART No. TP-360 ) Drill new mounting holes. ) M

18、ount where space is available and use for SEC. *3. TRANSFORMER (SWEEP CIRCUITS) ITEM No. T2 T3 T4 T5A B T6 RATING DC RESISTANCE PRI. 175S2 soon Tap 9TO 6l5n 13. 5n 680 170n SEC. 335S! 8.7S2 Tap (3) .en 18. 5O REPLACEMENT DATA PHILCO PART No. 32-8442 32-8437 32-8422-1 32-9622 76-2022-3 STANCOR PART N

19、o. DY-1 MERIT PART No. HVO-6 A-3036 MD-3 MF-1 CHICAGO PART No. TFB-3 NOTES Vert. Block Osc. Trans. Hor. Output Trans. Vert. Output Trans. Hor. Deflection Coil Vert. Deflection Coil Focus Coil TRANSFORMER (AUDIO OUTPUT) ITEM No. T7 RATING IMPEDANCE PRI. 5000O SEC. 4n DC RES. PRI. 435S2 SEC. .7n REPLA

20、CEMENT DATA PHILCO PART No. 32-8242 STANCOR PART No. A-3877 NOTES Used in models 50-T1404, 50-T1406, 50-T1403. (S) Used in models 50-T1432. (3) Drill and tap magnet frame. FILTER CHOKE ITEM No. LI RATINGS TOTAL DIRECT- CURRENT .260ADC D. C. RESISTANCE 62O INDUCTANCE tO CURRENT 1000 /) 2.8 Henries RE

21、PLACEMENT DATA PHILCO PART No. 32-8438 STANCOR PART No. C-2326 (D MERIT PART No. C-2991 CD CHICAGO PART No. TR-3300CD INSTALLATION NOTES CD Drill one new mounting hole. to m W O COILS (RF-IF) ITEM No. L2 L3 L4 L5 L6 L7 L8 L9 L10 Lll L12 L13 U4 L15 Lie L17 LIB L19 L20 L21 L22 L23 L24 L25 L26 L27 L28

22、L29 L30 L31 L32 L33 L34 L35 L36 L37 L38 L39 USE Ant. Coil Ant. Coil Ant. Loading Coil FM Trap RF Grid Coils HF Plate Coils RF Coll Mixer Grid Coils RF Choke Osc. Coils Conv. Plate Fil. Choke Adj. Channel Video Trap 1st Video IF 2nd Video IF RF Choke Fil. Choke Fil. Choke 3rd Video IF RF Choke 4th Vi

23、deo IF Plate Coil Sound Trap 4th Video IF Grid Coil 5th Video IF Fil. Choke Peaking Peaking Peaking Peaking Peaking Peaking 1st Sound IF 2nd Sound IF Ratio Det. Trans. Fil. Choke Horiz. Osc. Coil Horiz. Lin. Width Coil DC RES. PRI. .m .m on on 00 00 on on .20 on .in .in .10 .sn .3n .20 .in .in .3n .

24、2n .30 .in .30 .30 .10 2.7S1 60 .en en 5.2n 5.20 .10 .80 .in .10 930 .30 25n SEC. .70 .70 on .80 .10 son REPLACEMENT DATA PHILCO PART No. 32-4432 32-4432 * 32-4438-1 * 32-4112-2 32-4359-8 32-4112-15 32-4234-8 32-4233-4 32-4359 32-4112-15 32-4112-15 32-4112-15 32-4359 32-4112-15 32-4234-1 32-4234-7 3

25、2-4233-4 32-4234-1 32-4112-15 32-4143-16 32-4143-14 32-4143-14 32-4143-14 32-4143-13 32-4143-13 32-4303-2 32-4236 32-4317-4 32-4112-15 32-4470-3 32-4211-1 32-4419-3 MEISSNER PART No. 19-1922 19-1922 19-1922 19-1921 19-1921 NOTES Part of tuner 476-5433-1 40 microhenries 250 microhenries 250 microhenr

26、ies, not used in all models. 250 microhenries 180 microhenries 180 microhenries Alternate part #32-4317-2 Alternate part K32-4367 8-S PAGE 15 RadioFans.CN PARTS LIST AND DESCRIPTIONS (Continued) MISCELLANEOUS ITEM Kin INO. MIA B M2 M3 M4 B9, B7, B8 PART NAME RF Tuner RF Tuner Fuse Fuse Ion Trap Trim

27、mer Safely Glass Safety Glass Safety Glass Escutcheon Knob Knob Knob Knob Knob Knob Knob Knob Knob Knob Knob Knob Knob Knob Knob PH1LCO PART No. 76-5433-1 76-5411-1 45-2656-17 76-3913-2 31-6477-12 54-4755-1 54-8068 54-7943-8 56-7854 56-6596-11 56-6596-12 54-4662-1 54-4662-2 54-4699-3 54-4699 54-4707

28、-2 54-4707 54-4703-2 54-4703 54-4707-2 54-4707 54-4699-3 54-4699 54-4750 NOTES Tapered line tuner Turret tuner Length of #26 wire . 5A 250V Type MDL 3 section, Horiz. drive 45-370MMF, Horiz. lock 20-160MMF, Horiz. range 45-370MMF Model 50-T1404 Model 50-T1406 Model 50-T1432 Channel selector Model 50

29、-T1404 Channel selector, Models 50-T1406, 50-T1432 Fine tuning. Model 50-T1404 Fine tuning, Models 50-T1406, 50-TI432 Brightness, Model 50-T1404 Brightness, Models 50-T1406, 50-T1432 Contrast, Model 50-T1404 Contrast, Models 50-T1406, 50-T1432 Volume, Model 50-T1404 Volume, Models 50-T1406, 50-T1432

30、 Horiz. hold, Model 50-T1404 Horiz. hold, Models 50-T1406, 50-T1432 Vert, hold, Model 50-T1404 Vert, hold, Models 50-T1406, 50-T1432 Antenna tuning * FULLY /CX COUNTERCLOCKWISE TAPERED LINE TUNER FINE TUNING DRIVE CORD STRINGING HEIGHT FOCUS VERTICAL HORIZONTAL WIDTH CONTROL CONTROL LINEARITY LINEAR

31、ITY m CONTROL CABINET-REAR VIEW PAGE 16 RadioFans.CN 1 HORIZONTAL SWEEP CIRCUIT ADJUSTMENTS HORIZONTAL SWEEP CIRCUIT ADJUSTMENTS (CODE 125) If a tube or circuit components are changed and the range of the horizontal hold control is not sufficient to compensate for normal variations in the frequency

32、of the horizontal oscillator, it may be necessary to make the following adjustments. 1. Pre-set the adjustments as follows: Turn the horizontal lock-in trimmer (Bl) fully clockwise, then one turn counter-clockwise. Turn the stabilizing slug (B2) fully counter-clockwise. Turn the horizontal drive tri

33、mmer (B3) fully clockwise, then one turn counter-clockwise. Turn the horizontal hold control to the mid-position 01 its range. 2. Turn the set on and tune in a TV station, preferably a test pattern, and adjust the horizontal frequency slug (B4) until the picture synchronizes horizontally. 3. Connect

34、 the vertical input lead of an oscilloscope to pin 3 of the horizontal oscillator test socket and chassis. Adjust B2 until the broad and narrow peaks arc of equal amplitude as shown in figure 7. If necessary readjust B4 to keep picture in sync. Turn B3 counter-clockwise until variation of the bright

35、ness control justs effects the horizontal linearity. 4. Turn the horizontal hold control fully clockwise and adjust B4 until the horizontal blanking bar is visible at the left edge of the picture. Turn the hole! control counter-clockwise until picture is in sync and then out again. Turn the hold con

36、trol clockwise slowly and note the number of blanking bars sloping downward to the left just before the picture pulls into sync. There should be 2 to 3| bars present just before pull-in. If there is more that? 3i bars present turn Bl slightly clockwise, if less than 2| bars are present turn Bl sligh

37、tly counter-clockwise. Turn the hold control fully counter-clockwise, if receiver does not lose sync, momentarily remove signal by switching to another channel and back again. If picture does not pull-in when 2- to 3i bars are present, repeat step 4. 5. Turn the hold control fully clockwise and adju

38、st B4 until 4 to 6 bars are present sloping downward to the left. Turn the hold control counter-clock- wise slowly, noting whether the picture goes in and out of sync, then turn the hold control slowly clockwise until picture is in synchronization. If this sequence is not obtained, repeat steps 4 an

39、d 5. HORIZONTAL SWEEP CIRCUIT ADJUSTMENTS (CODES 123 and 124) Pre-set the following adjustments: Horizontal lock-in trimmer (B7) 1/2 turn counter-clockwise from a fully clockwise position. Horizontal frequency trimmer (B8) 1 turns counter-clockwise from a fully clockwise position. Horizontal drive t

40、rimmer (B9) two turns counter-clockwise from a fully clockwise position. Turn the set on and tune in a TV station preferably a test pattern. Turn the horizontal hold control to the mid-position of its range. Adjust the horizontal oscillator slug (BIO) until the picture synchronizes horizontally. Tur

41、n the contrast control to approximately its normal position. Turn the hold control fully clockwise. Adjust BIO until 8 to 10 stationary bars sloping downward to the right are observed. If this condition can not be obtained, turn B8 one full turn counter-clockwise and repeat this step. Turn the hold

42、control fully counter-clockwise and momentarily remove the signal by switching to another channel and back again. Slowly turn the hold control clockwise and carefully note the least number of bars present just before the picture falls into sync. If more than 4 bars are pre- sent just before pull-in,

43、 turn B7 1/4 turn clockwise, if less than 3 bars are present, turn B7 1/4 turn counter-clockwise. Repeat this procedure until 3 to 4g bars are present just before pull-in. HORIZONTAL LINEARITY AND WIDTH ADJUSTMENTS Adjust the width slug (B5), until the picture fills the mask horizontally. Adjust the

44、 horizontal linearity slug (B6) until picture is symmetrical from left to right. FIG.7 A PHOTOFACT STANDARD NOTATION SCHEMATIC Howard W. Sams & Co., Inc. 1950 TURRET TYPE TUNER PAGE 18 RadioFans.CN CHASSIS BOTTOM VIEW-RES PAGE 19 PAG RadioFans.CN i VIEW-RESISTOR IDENTIFICATION PAGE 2O I RadioFans.CN