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Содержание 415

Страница 1: ...BftfModel 415 _j Sweep Marker Gener tor A Product of DYNASCAN CORPORATION 1801 West Belle Plaine Chicago Illinois 130613 _ PRICE 5 00...

Страница 2: ......

Страница 3: ...t INSTRUCTIONMANUAL FOR MODEL 415 SWEEP MARKERGENERATOR 8 K DIVISION OF DYNASCAN CORPORATION 1801 W Belle Plaine Avenue Chicago Illinois 60613 Copyright 1972...

Страница 4: ......

Страница 5: ...the amplitude and tilt of the observed waveforms are affected by ti1c of the interconnect ing wues end cab es 111 Li 3 set up crnd that can uiso 0 vaned touchmg foe leuds cu 1lc cmc l equipment compie...

Страница 6: ...55 7 1 PRELIMINARY 55 Page 7 2 TRAP ADJUSTMENTS 55 7 3 I F RESPONSE TILT ADJUSTMENT MIXER INJECTION 56 7 4 CHROMA CIRCUIT ADJUSTMENT 56 7 5 TILT ADJUSTMENTS ANTENNA INJECTION 56 8 0 COMPLETE 1 F AND C...

Страница 7: ...Overall Chroma Alignment Fig 4 5 Color TV Receiver Block Diagram for I F and Overall Chroma Alignment Fig 4 6 Typical I F Response Curve with Reference Markers Added Fig 4 7 Enlarged Portion of I F R...

Страница 8: ...on 12 0 MAINTENANCE Fig 6 7 Tuner Link Response Curve with ce Markers Added Fig 12 1 Modification of Spare Marker Oscillator for Variable Frequency Operation Fig 3 1 Repeated Model 415 Block Diagram S...

Страница 9: ...Channel 10 CUSTOMEROPTION A spare marker oscillator circuit is pro vided for the customer option The circuit can be adjusted to accept any third over tone crystal in the 35 MHz to 50 MHz range or with...

Страница 10: ...nt panel to indicate when specific markers are being used In addition the lights are located on idealized response curves to indicate the de sired position of the markers This is a built in reference...

Страница 11: ...4916 Mike Connector with Banana Plugs 2 ea t1 1 L ___ L r lliJ 1 J _L S 4915 Cable witri lOK Ohm Isolating Resistor s Black and Yellow Terminals PR 151 Demodulator Probe TP 41 R F Cable with Built In...

Страница 12: ...lator matrices of the color signal processing circuits adjust the I and Q signal amplitudes of the chroma information and generate a phase shift of the chroma carrier 3 58 MHz with respect to the I an...

Страница 13: ..._ ______ 4 5MHz 45 75 193 25 I 194 CHANNEL 10 6 MHZ BANDWIDTH I 195 I 196 I 197 42 17 196 83 l 198 41 25 t97 75 B Television Signal Spectrum Showing Response Variations Produced by Processing the Sign...

Страница 14: ...7 75 41 602 608 614 620 626 632 638 s 643 75 42 644 P 645 25 s 649 7_5 __ 43___ 650 p 651 25 44 S 655 75 656 P 657 25 s 661 75 45 662 P 663 25 s 667 75 46 668 P 669 25 s 673 75 47 674 p 675 25 48 S 67...

Страница 15: ...adjacent to the lower limit of Channel 11 and is re ferred to as the Channel 11 adjacent sound frequency The Channel 11 pix carrier is also the Channel 10 adjacent pix carrier These frequency relatio...

Страница 16: ...receivers Black and white receiv r 1 El r l J IOUTPC IT I ers can of course be aligned by the methods outlined in this manual the difference being that no chroma circuit alignment is required This me...

Страница 17: ...C C RCl JITS_J SYNC Tl HORlZONTAL l IH V REcr REG DEFLECTIO N 1 r ri A I cTunsJ IFOCUS OAM ER L _ _HORIZ OEfL COILS CONVERGEN F VERTICA B Vf Rl DUL COi S DEFLECTION C P JITS f ONVERGENCL Figure 2 5 Si...

Страница 18: ...ned to different frequen cies are combined to obtain a desired overall curve This is demonstrated in Figure 2 8 Assume that each individual response curve dotted lines represents the output of a singl...

Страница 19: ...UPLED Figure 2 10 Efiects of Coupling on Overall Response of Two Tuned Circuits A Single Winding B Double Winding Figure 2 11 Core Positions at Resonance in Tunable Coil Assemblies 2 2 2 4 IMPORTANCEO...

Страница 20: ...cuits drift or are misaligned or if the gain of one or more stages changes the signal prop erties are affected in several ways Signal levels may be too low the bandwidth may become too narrow the sig...

Страница 21: ...t o z r I I u w 0 NN n V V V CHROMA 6 MHZ WIDE 67 46 X a I 66 47 I Cl z f Cl i the chroma portion of the receiver The chroma takeoff coil is tuned to the upper end of the chroma frequency range usual...

Страница 22: ...r i f alignment The i f pix earner frequency 45 75 MHz is then mod ulated with a video sweep voltage VSM again As before this is detected at the video detector of the TV receiver and the recovered swe...

Страница 23: ...uts are generated within the instrument We believe that a good grasp of the operat ing principles of this instrument together with the preceding description of television re ceivers will enable you to...

Страница 24: ...S S SIAS SUPPLIES I A REG MKRA REG Z5V REG Jr JI u J 25VREG O 0 IZOVAC HORIZONTAL SWEEPPHASE SPLITTER LON PASSFILTf R 6VIOEO SWEEP AMPLIFIER RF IF VlDEO ATTENUATOR RF IF VIDEO OUTPUT TO SCOPE HORIZ IN...

Страница 25: ...Hz Detector QIS The output is also fed through Buffer Amplifier Q202 to the FUNCTION switch 3 2 2 1 FMARKEROSCILLATORS Marker oscillators Ql through Qll furnish marker frequencies in the television i...

Страница 26: ...f Ql8 is superimposed on the horizon tal sweep voltage and the observed markers will be horizontal tilted This marker tilt feature is valuable in determining the location of particular frequency point...

Страница 27: ...of the Channel 4 frequency range and vice versa In television receiver tuners the local oscil lator operates above the incoming signal by an amount equal to the i f frequency When exactly adjusted by...

Страница 28: ...oma side markers 42 67 MHz and 41 67 MHz and the pix carrier are 3 08 MHz and 4 08 MHz respectively Finally by subtracting the 41 25 MHz sound carrier from the 45 75 MHz pix carrier 4 5 MHz is obtaine...

Страница 29: ...DEO CHROM O s t E 0 0 c N r E I C J s t N c E ro X 0 I N c E rt X l Q N c E X IO ro system as in the TV alignment system The same marker and pattern amplifiers are used and either the demodulator or d...

Страница 30: ...ing for either minimum re covered 400Hz or maximum recovered 400 Hz 3 58 depending on whether traps or bandpass coils respectively are being aligned 4 1 4 OVERALLRECEIVERALIGNMENT CHECK To check overa...

Страница 31: ...DETECTOR SOUND 1 F AND DEMODULATOR AUDIO OUTPUT USE PR 151 DEMODULATOR TO SCOPE TO SCOPE TUNERS f UHF VIDEO 1 F AMPLIFIERS VIDEO DETECTOR 1ST VIDEO AMPLIFIER PROBE 415 SIGNAL INPUT 75 OHMS 1ST COLOR...

Страница 32: ...cillator fre quency In the video sweep generating sys tem of the Model 415 detection is accom plished by a diode in Video Sweep Amplifier stage Q 401 30 To generate a video sweep in the television rec...

Страница 33: ...INPUT 75 OHMS VIDEO 1 F AMPLIFIERS t IF AGC SOUND DETECTOR VIDEO DETECTOR OUTPUT USE DIRECT PROBE SOUND 1 F ANO DEMODULATOR AUDIO OUTPUT 1ST VIDEO AMPLIFIER USE PR 151 DEMODULATOR PROBE 1ST COLOR AMP...

Страница 34: ...Figure 4 9 The preceding shows how the i f and chroma response can be evaluated by a single input connection to the receiver With the PROBES switch the operator can switch from the i f response to th...

Страница 35: ...INPUT 75fi VHF TUNERS UHF 1 IOEO 1 F AMPLIFIERS t 1 F AGC BIAS SOUNO DETECTOR VIDEO DETECTO J t OUTPUT _j USE VTVM SOUNO 1 F ANO DEMODULATOR 1ST VIDEO AMPLIFIER 1ST COLOR AMP AUDIO OUTPUT 2 COLOR AMP...

Страница 36: ...4 I Ji DI DIJ O E Figure 4 12 Model 415 Block Diagram for MOD MKR Function 34 I...

Страница 37: ...D DETECTOR VIDEO DETECTOR USE DIRECT PROBE _ __ up is used the recovered 400 Hz modulation viewed on the oscilloscope can be used as an indication Also without altering connec tions the operator can s...

Страница 38: ...on 1 F AGC BIAS VIDEO 1 F AMPLIFIERS SOUND DETECTOR SOUND 1 F AND DEMODULATOR AUDIO OUTPUT 1ST VIDEO AMPLIFIER USE PR 151 DEMODULATOR J PROBE TO SCOPE HOR1Z INPUT TO SCOPE OUTPUT USE DIRECT PROBE 1ST...

Страница 39: ...3 PIX 45 75 67 25 ADJ SND 47 25 65 75 A Fine Tuning Improperly Adjusted Additional resolution can be obtained by in creasing the output of the Model 415 and at the same time increasing the oscilloscop...

Страница 40: ...frequency for Channel IO and is applied to the receiver antenna terminals The frequency relationships between the Channel 10 markers and i f markers are shown in Figure 3 3 Chroma alignment can be per...

Страница 41: ...to the i f age line if specified The i f response and the demodula tor S curve can then be viewed by use of the direct probe The 100 KHz switch can be used to add 100 KHz markers to the response curve...

Страница 42: ...1 32 31 30 29 40 4 5 Figure 5 1 Front Panel Controls and Outputs of Model 415 i I I I i...

Страница 43: ...puts made available at this jack 14 15 16 100 KHz MKR switch This switch is used to add a train of markers having 100 KHzfrequency separations to any of the i f markers as well as the 10 7 KHz crysta...

Страница 44: ...lJ L liJ J 1J w l _1u 1_ 1 11 J L S 4916 Mike Connector with Banana Plugs 2 ea llJnl i 7 4 l9_1_5_C ab_l_e_w_ i hl lOK Ohm lsolali g Resistor Black and Yellow Terminals 42 PR 151 Demodulator Probe TP...

Страница 45: ...ne of the ground jacks in the Model 415 bias section 5 2 5 Connect the S 4915 cable between the DI RECT jack of the 415 and the video detector test point of the receiver the lead with the yellow insul...

Страница 46: ...max imum clockwise when setting up Turn on the ADJ PIX 39 75 MHz marker and the ADJ SND 47 25 MHz marker Use the CENTER FREQUENCY control to center the sweep pattern as shown in Figure 5 3 With this...

Страница 47: ...ng used has a calibrated scale the peak to peak pattern amplitude is read directly because there is unity gain through the signal processing circuits of the 415 If no amplitude limits are given vary t...

Страница 48: ...s Once the response curve has been obtained switch the horizontal sweep selector of the oscillo scope to an internally generated sweep position and use a low sweep rate so that several IF response cur...

Страница 49: ...switch The primary purpose A 1 FMarker with 100 KHz Markers Added 5 6 2 of this oscillator stage is to provide an addi tional crystal controlled marker oscillator in the event that a user does extens...

Страница 50: ...ure for setting up and performing the task 48 6 1 SIMPLIFIED PROCEDURE FORDIAGNOSING NEED FOR ALIGNMENT The test set up of Figure 5 2 and the set up instructions of Par 5 2 apply for the following pro...

Страница 51: ...er is reduced to minimum width at the bottom of the sound frequency notch as shown in Figure 4 l7B Repeated Turn on the remaining CHROMA markers 41 67 MHz and 42 67 MHz the ADJ PIX 39 75 MHz marker an...

Страница 52: ...without distorting Compare the curve obtained with the manu facturer s 6 2 ANALYZINGTHE RESPONSECURVES 6 2 l In the cases above the technician must now determine if the curves obtained are satisfac to...

Страница 53: ...3 08MHZ 85 15 20 VALLEY J 15 MAX TILT 10 MAX 4 50 MHZ B Typical Chroma Response Curve Showing Tolerance Ranges of Response Levels Figure 6 2 Typical Manufacturer s Response Curves with Allowable Varia...

Страница 54: ...erly Tuned C Center Frequency Coil Tuned to High End of 1 FResponse 6 3 1 LOCALIZING ALIGNMENT PROBLEMS By examining the output of the video detector as well as the output of the chroma bandpass ampli...

Страница 55: ...ponse One adjustment of the tuner link is located at the tuner proper and is the tuning adjustment of the mixer output circuit The other tuning adjustment is located at the input to the first i f ampl...

Страница 56: ...the i f response curve 6 3 2 3 CHROMA ALIGNMENT 54 In alignment of the chroma portions of the receiver several methods are used One meth od is to pre align the bandpass amplifier out put using direct...

Страница 57: ...is indicated or is suspected proceed as follows Use test set up procedure of Par 5 2 and set up of Figure 5 2 7 2 1 Locate spot frequency marker injection point This is usually a test point in the mix...

Страница 58: ...w fre quency ends of the i f response curve These are specified in either the spot frequency alignment section or the overall sweep align ment section 56 7 4 CHROMA CIRCUIT ADJUSTMENT The touch up in...

Страница 59: ...D 47 25 65 75 A Fine Tuning Improperly Adjusted 7 5 8 When the above steps are performed the tilt adjustments for the i f response can be per formed 7 5 9 With the SOUND 41 25 and the three CHRO MA 41...

Страница 60: ...trap frequency AND TRANSFORMERS When Specified over and above those listed here For exam pie some Motorola receivers have a trap Some alignment procedures specify a pre frequency at 35 25 MHz and some...

Страница 61: ...sections Review all bias require ments for i f age r f age and for the chroma portion of the receiver 8 4 2 Preset the bias values to the levels specified and make sure that polarities are correct bef...

Страница 62: ...Figure 4 17A repeated Another effective method of obtaining accurate adjustment of the receiver fine tuning control is to use the horizontal marker display and adjust the fine tuning until the sound m...

Страница 63: ...ther with the 42 17 MHz marker define the response portion of the i f curve on which the chroma information is carried The marker should be positioned as indicated in the manufacturer s response curve...

Страница 64: ...on of I F Response 62 8 5 3 6 The signal level must now be adjusted prior to checking the overall chroma response Usually the d c level at the video detector test point is specified when performing ch...

Страница 65: ...eiver and use the 75 ohm switch position Place the FUNCTION switch of the 415 to the MOD MKR position 9 1 1 2 Turn on the PIX 45 75 MHz marker and the SOUND 41 25 MHz marker The difference between the...

Страница 66: ...e base collector junction of a bipolar transistor is sometimes used as the voltage variable capacitor It is charac teristic of a semiconductor junction that it exhibits the voltage capacitance charact...

Страница 67: ...OM LAST 1 F STAGE C4 R2 C3 H TD FILAMENTS R3 B DIRECT PROBE TO 415 I 1 C7 D2 R6 I I I I I C5 I I I I I I I I I I I C9 cs R4 CIO R5 DI Cl q A F C BOARD Figure 9 2 Typical AFT Circuit R7 TO TUNERS 1 65...

Страница 68: ...N position This generates a continuous string of markers having 100 KHz separations and extending over one megacycle in each direction from the pix carrier marker as shown in Figure 9 4 This enables t...

Страница 69: ...lified outline of the alignment portion of this man ual The procedures are shown in sequence for effective use of the Model 415 in perform ing alignment checks touch ups an i com plete realignment The...

Страница 70: ...LT ADJUSTMENT ANTENNA INJ 1 F 8 CHROMA SEC 7 5 AFT CHECK SEC 9 2 SEC 6 3 COMPLETE REALIGNMENT SEC 8 0 TRAP ALIGNMENT SEC BJ BANDPASS COiL ALIGNMENT SEC 8 2 TUNER LINK SEC 8 3 SWEEP ALIGNMENT OF 1 F ST...

Страница 71: ...I 1500 47K I L __ ____ _j FIGURE 5 I F DETECTOR AND LOAD FIGURE7A Paragraph 5 2 in the fold out at the end of the manual The user may also refer to the con densed work guide of Figure 9 5 in Section...

Страница 72: ...Tuner Converter Plate Coil slug should be at point farthest into coil Apply a 41 25MC CW signal to Tuner Adjust T204 Top and R215 for minimum reading Test Point Connect a VTVM to on VTVM T204 slug sho...

Страница 73: ...n off marker 415 r f cable as above Con FUNCTION switch to IF CHROMA 42 17 Perform adjustments indicated nect load blocks between pins PROBES switch to DEMOD ADJ SND 47 25 on opposite page observing 5...

Страница 74: ...st L902 for maximum response at 45 75MC 5 Adjust L903 for S curve with 45 75MC marker falling at zero voltage crossover see Figure 1 Slug should be positioned at point nearest board 6 Repeat the adjus...

Страница 75: ...et the VERTICAL switch of the Model 415 as required for proper polarity Figure 1 opposite page 6 Tum off ADJ SND 47 25 marker and turn on 100 KHz markers Adjust MARKER AMPLITUDEfor suitable marker hei...

Страница 76: ...75MHz L 12 FOR MIN TRAP OEF LECTION INCREASE SCOPE GAIN If NECESSARY FOR SUFFICIENT INDICATION REPEAT STEP 8 KEEP ALL CORES AT COIL END AWAY 8 47 25MHZ L 1t ANO L 14 FOR MIN TRAPS I FROM BOARD CAUTION...

Страница 77: ...I I ANO L14 IN THAT ORDER FOR MINIMUM DEFLECTION INCREASE SCOPE GAIN IF NECESSARY FOR 7 38 75 MHZ Ll2 FOR MIN TRAP SUFFICIENT INDICATION REPEAT STEP 8 KEEP ALL CORES AT COIL ENO AWAY FROM BOARD 8 ADJ...

Страница 78: ...or steps 3 and 4 SWEEP SIGNAL ADJUST REMARKS GENERATOR GENERATOR ALIGN CHROMA BAND 3 5MHz SWEEP WIDTH L40 TOP AND BOT ADJUST L40 TOP 6 BOTTOM FOR RESPONSE PASS TRANS L40 AT 3 58MHz CENTER TOM CORES CU...

Страница 79: ...impedance R F modulator not required R F Modulator H Not required VTVM J Connect lo lug Ml4 adjust Model 415 output for 0 5 VDC for Steps 3 and 4 NOTE When performing alil nment by injecting the r f s...

Страница 80: ...for performing i f alignments and is reconnected at a second test point when performing discriminator alignment Pro ceed as follows See Figure 4 21 Repeated 41 SIGNAL INPUT 75n j 1 F AMPLtFIERS 1 F BI...

Страница 81: ...be used to check tracking up to 94 5 MHz 47 25x 2 By using other features of the Model 415 tracking of the f m receiver through the complete f m band 88 MHz to 108 MHz can be performed Harmonics of th...

Страница 82: ...7 MHz Sweep Signal and tenth harmonic markers on the trace The markers may move either to the right or to the left depending upon whether the f m receiver uses high side injection or low side injectio...

Страница 83: ...at Reduced Sweep Width double beat observed At this point the tunable generator frequency is exactly equal to the crystal marker frequency 11 2 6 If it is desired to calibrate the signal gen erator at...

Страница 84: ...other than the basic 10 7 MHz and the television i f frequency range Any of the 10 7 MHz harmonics can be used for sweeping at frequency multiples of 10 7 MHz Because harmonics are used this means th...

Страница 85: ...that the required output is generated at the RF IF VIDEO jack The Switching Chart 12 l l 12 1 2 of Table 12 2 condenses this information into compact form By reference to the Switching Chart as well a...

Страница 86: ...d foil They are used here for convenience in discussing troubleshooting and adjustment procedures Referring to Figure 12 3 a similar identifi cation of certain voltage test points is made As indicated...

Страница 87: ...eference The sche matic can be used to check cabling and d c 12 2 4 12 2 5 12 3 switching if required The above troubleshooting information is condensed in the troubleshooting chart of Table 12 l Unde...

Страница 88: ...the B K Model 177 VTVM Turn the ATTENUATOR control to max Using the lowest d c voltage range avail able 0 5 volts on the B KModel 177 with negative polarity turn on only the marker which is to be tune...

Страница 89: ...DEcon trol for suitable marker height as determined from observation of the standard internal markers Adjust 11 and C2 as required to produce a marker indication on the scope Adjust 11 for final peaki...

Страница 90: ...k and note the peak to peak reading on the VTVM Place the HORIZ SWEEP switch to the NORM position and adjust the trimpot R69 refer to Figure 12 2 for an equal peak to peak reading 88 12 4 7 ADJUSTMENT...

Страница 91: ...A REG 20VAC HORIZONTAL SWEEPPHASE SPUTTER 0 4 LOWPASSFILTER 8VIOEO SWEEP AMPLIFIER L_ __ _J_ RF IF VIDEO RF IF VlOEO ATTENUATOR OUTPUT TO SCOPE HOR Z INPUT TO SCOPE n 004 1 VERT INPUT S 5 2 JJIJ 10 0...

Страница 92: ...e O iJIJ CW OIJ Figure 4 4 Repeated Model 415 Block Diagram for 1 F Alignment and Overall Chroma Alignment DlJ CW CW 90 Figure 4 10 Repeated Model 415 Block Diagram for MKR Function I...

Страница 93: ...Figure 4 12 Repeated Model 415 Block Diagram for MOD MKR Function tJI l W o h Figure 4 14 Repeated 415 Block Diagram for CH 4 Function TO SCOPE MORIZ INPUT TO SCOPE 91 I...

Страница 94: ...Figure 4 18 Repeated 415 Block Diagram for CH 10 Function 8 JI DI DI 92 Figure 4 20 Repeated Model 415 Block Diagram for 10 7 MHz Function TO SCOPE HORLZ INPUT TO SCOJ E I...

Страница 95: ...ts Layout for Power Supply RF Board Viewed from Component Side TP 4 SPARE MKR ADJ 0 GNO 0 482 019 9 001 0 TP 306 0 i Ill l a 1 Gl ti u N r i J J 47 B 1 1 1 1 00 0 AE 4V r i_ TP 1 0 TP 2 0 0 Aae 9 A tv...

Страница 96: ...ELD 94 0 0 r n z 482 019 9 002 Figure 12 4 Parts Layout for Sweep Oscillator Board Viewed from Component Side TP 401 Figure 12 5 Parts Layout for Pix Oscillator Board Viewed from Component Side TP 202...

Страница 97: ...2 V P P C Q 13 Base 1 V P P 1 I I E Q 14 Base 13 V P P u B Q 12 Collector 12 V P P D Q 13 Collector 25 V P P F Sweep Oscillator Voltage at TP 203 Fig 12 4 22 V P P Figure 12 6 Waveform Generator Wave...

Страница 98: ...AY Switch S5I3 No Specific Marker Pip 39 75 L 2Mistuned Q 2 X 2 41 25 L 3Mistuned Q 3 X 3 41 67 L 4Mistuned Q 4 X 4 42 17 L 5Mistuned Q 5 X 5 42 67 L 6Mistuned Q 6 X 6 42 75 L 7Mistuned Q 7 X 7 44 00...

Страница 99: ...V CH IO ON OFF OFF OFF or ON OFF OFF OFF OFF OFF ON OFF or A 6V or or ON ON ON A 6V 10 7MHz OFF OFF OFF OFF OFF ON ON OFF OFF OFF OFF or ON Pix oscillator Q402 may be turned on by use of the CHROMA s...

Страница 100: ...2 MKR 4 3 V 3 1 V 10 0V IF 1 6V 1 5 5 0 V Q 7 42 75 Mkr Osc 12 2 MKR 4 0V 3 l V 10 4 V IF 1 5 V 1 5V 5 0V Q 8 44 00 Mkr Osc 12 2 MKR 4 2V 3 0 V 10 3 V IF 1 6 V 1 5V 4 9V Q 9 45 00 Mkr Osc 12 2 KR 4 0V...

Страница 101: ...ounted on Chassis under Q 502 25 V Regulator PC hoards VIDEO 28 0V 28 0V 64 0V FIELD EFFECTTRANSISTORS Parts Layout Schematic Transistor Figure FUNCTION Symbol Function No Sw Position Drain Source Gat...

Страница 102: ...by the manufacturer is not required 6 Connect the PR 151 Demodulator probe to the DEMOD jock of the 415 The connection of the Demodulator probe to the TV receiver depends on the alignment task being...

Страница 103: ...sponse curve is being observed in conjunction with the markers when the MARKERDISPlA Y switch is the HORIZposition the markerswill disappearinto the base line and will not be ewlent Alway check the po...

Страница 104: ...O HE __J I j SWEl P HORIZONTAL_ f _E_ I 6i 9 t OSC o i NPtJT y 6 81 J_ r 1 i r PIN 2 PINS TOS 522 CHROMA SWITCH REAR A rb s 1 io r j C 22 470 J 200V 2CO IOIJCTOA SHIEU IE OCABLE J1 22 100 TOll VAC TRA...

Страница 105: ...CJ59 tro f P e C35 2 RJ49 r tt 20 IQ 52 FI NCTION SWITOf S CTIQ1 2 Rl AR PINI 1 j R31s T1 r 3 31 I I I I I I OLTAGE MEASV EMENTS TAKEN wn A TVM ANO MEAsum o lO CHASS s GROUND t i A 1 t s ss sb sE OHs...

Страница 106: ...NO S521 SEC l 44MHZ JUrfff AMP i 5 0 r 217 10 7MHZ I c 0 5g t o4 I I I I I I I I I I _C2 0 J 202 o 1 10 7 MHZ SWEEPOSC I CH20I f l J I W TOC505 j j f r WHT ORGIB ro 25v R204 IM G R20 R20 11203 151 IO...

Страница 107: ...X 3 X 4 X 5 X 6 X 7 X 8 X 9 X 10 X 11 X 301 X 302 X 303 X 401 DESCRIPTION DIODES TRANSISTORS B K PART ho Transistor NPN Silicon Signal Green Dot 176 006 9 001 Transistor NPN Silicon Signal 176 010 9 0...

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