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Philips GM 5605, Руководство пользователя

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Philips GM 5605 Скачать руководство пользователя страница 21

Содержание GM 5605

Страница 1: ...MANUAL PHILIPS Cathode ray oscilloscope GM 5605 66 02 58 2 10 1 86 4 01 ...

Страница 2: ...D Switchingon 13 II Operation A Preliminary setting 14 B Displaying waveforms 15 C How to use the X input 16 v v r j T III Applications A Measuring the amplitude 18 B Using the X input 18 C Displaying a diode characteristic 21 D Displaying a hysteresis loop 21 SERVICE DATA I Circuit description A Y amplifier 23 B Trigger pulse shaper 25 C Time base generator D X amplifier E Cathode ray tube 3 F Su...

Страница 3: ...38 B Supply voltage 280V 38 C Ripple on the supply voltage 280 V 38 D Barrel and pincushion distortion 38 E Focusing and astigmatism 39 F Y amplifier 39 G X amplifier 41 H Time base generator 45 VI Replacing parts A Thermal fuse 47 B Supply transformer 47 C Switches SK2 SK3 and SK4 47 D Switch wafers SK2 48 E Switch wafers SK3 48 F Switch wafers SK4 48 G Potentiometers on the front panel 48 H CRT ...

Страница 4: ... integrator 13 Circuit diagram of the bootstrap integrator 14 Removing the cabinet panels 15 Removing the knobs 16 Removing the bottom plate and front panel 17 Removing the graticule 18 Square wave response of the Y amplifier 19 Square wave response of the X amplifier 20 Replacing the thermal fuse 21 Replacing the supply transformer 22 Anode connection 23 Positioning the c r t 24 Right hand side v...

Страница 5: ... UnitC X amplifier 79 33 Circuit diagram of the X amplifier 81 34 Unit B beam control 85 35 Circuit diagram of the c r t circuit 87 36 Unit E H T unit 91 37 Unit F supply part 92 38 Circuit diagram of the supply part 95 Important In correspondence concerning this apparatus please quote the type number and serial number as given on the plate at the back of the apparatus ...

Страница 6: ...r educational purposes For X and Y deflection the apparatus contains d c amplifiers having the same properties X Yoscilloscope The GM 5605 is therefore extremely suitable for displaying the relationship between two quantities e g frequency and phase relationships Moreover voltages can be displayed as a function of time by means of the incorporated time base generator ...

Страница 7: ...oltage at d c input DH7 78 flat screen other screen types can be supplied 6 x 5 cm width X height 1750V 10 X 8div 1 div 5 5 mm d c amplifier adjustable to 8 calibrated values 0 01 0 03 0 1 0 3 1 3 10 30 V div Tolerance 3 Between the steps the sensitivitycan be continu ously adjusted in a ratio of 1 3 5 uncalibrated 0 200 kc s 3 dB Via the capacitor input the bandwidth is 5 c s 200kc s 1 for pulses...

Страница 8: ...ce 3 Between the steps the sensitivitycan be continu ously adjusted in a ratio of 1 3 5 uncalibrated 0 200 kc s 3 dB Via the capacitor input the bandwidth is 5 c s 200 kc s 1 for pulses with a rise time 25 ns 3 x the useful screen width i e 1 5 x to the left and to the right from the centre At maximum expansion the peaks of the signal can be displayed undistorted by means of the horizontal shift c...

Страница 9: ...g c input impedance of socket EXT TRIGG Supply Mains voltage Influence of mains voltage vari ations of 10 Mechanical data Dimensions Weight voltage adapter for 110 125 145 200 220 and 245 V The mains frequency may range from 40 100 c s mains frequencies 50 c s only at nominal mains voltage Power consumption is SOW The Y and X deflection sensitivity changes inversely proportional to the mains volta...

Страница 10: ... a voltage adapter The adjusted value can be read through the round opening in the rear panel The instrument is adjusted to another mains voltage as follows Remove the cover plate at the rear Fig 1 Pull the adapter out a little turn it until the correct voltage value is uppermost and then press the adapter back again Refit the cover plate j V Fig L Adjusting to the local mains voltage ...

Страница 11: ...thing sockets at the front of the apparatus Double earthing connections may cause hum and must be avoided C CHECKING BEFORE SWITCHING ON Check the setting of the mains voltage adapter see section A Check whether the apparatus hasbeen properly earthed see section B Set knob INTENSE to position 0 Connect the apparatus to the mains via the mains flex Fig 2 If desired the apparatus can be tilted by me...

Страница 12: ...CHING ON Switch on the apparatus by setting knob INTENS from position 0 to approximately its central position A stationary picture of maximum brightness left on the screenfor too long a time may permanently damage the screen ...

Страница 13: ... centre of the screen by means of the knobs jYf and X Check whether the time base line appears horizontally on the screen If necessary reposition the picture tube in accordance with section VI H l Adjust the definition and the brightness of the picture by means of the controls FOCUS and INTENS 17 Fig 3 Preliminarysetting ...

Страница 14: ...ft hand side of the apparatus B DISPLAYING WAVEFORMS 1 Time base internallytriggered Adjust as described under Preliminary setting page 14 Turn knob STAB anti clockwise until the time base line just dis appears Apply a voltage to the d c or a c input of the Y amplifier Turn knob STAB until a stable picture is obtained Place knobs Y AMPL and NV in the required position Note If no triggering occurs ...

Страница 15: ...mentioned in chapter III Connect the voltagesto be compared to the input sockets DC AC Y AMPL and DC AC X AMPL Place switches Y AMPL and X AMPL in the desired position Set the continuous control X AMPL to position X1 The picture can now be brought on the screen by means of the shift con trols jYf and X In order to obtain good stationary pictures the voltages on the two amplifier inputs should be s...

Страница 16: ...u n J ii IH uic W iKc pKI re Imi I it rniil trtf l r nmul IH hr I lui tnuii rmj wKk nli nul iu k J Kr i nnr l fc X AWI l p rt u H J 1 K U k i ii wlal 1 I il in I MLH I 1 V ih li i n iv i ii i I I IWllClKd IH Cxndnuuui elt lUVt1l l u w twntonul HI JKHLlHJA Fig 4 Functions of the controls and sockets ...

Страница 17: ...rements Phase measurements Displaying characteristics Etc Frequency measurement by means of Lissajous figures If a voltage of unknown frequency is applied to the Y amplifier the light spot on the screen will describe a so called Lissajous figure under the influence of a voltage of known frequency applied to the X amplifier Dependent on the frequency the image will show a certain number of peaks Th...

Страница 18: ...ntre The following applies irrespective of the quadrant in which the phase angle is found the sine of phase angle p is determined by the ratio a b see Fig 7 In the figure sine p 2 div 4 div 0 5 The phase angle p is then 30 If the top of the ellipse is at the right of the screen the phase angle is in the first quadrant 30 or in the fourth quadrant 360 30 330 P M 290 E12J Fig 7 Determining the phase...

Страница 19: ... with closed switch Open the switch and turn the potentiometer from minimum to maxi mum value In doing so the shape of the ellipse must clearly change PEM 289 E127 Fig 8 Network for quadrant determination Phase angle thus also a Quadrant becomes Quadrant larger smaller 2 90 I80 3 180 270 1 0 90 4 270 360 If the picture appears as a straight diagonal on the screen the phase angle is 0 360 or 180 Fi...

Страница 20: ...haracteristic of the OA 85 D DISPLAYING A HYSTERESIS LOOP In displaying hysteresis loops of magnetic material the magnetic induction B is plotted as a function of the field strength H If the iron core of a coil contains no air gaps the field strength is proportional to the current through the number of windings The primary current is thus a measure of the field strength H A resistor Rp is connecte...

Страница 21: ... a hysteresis loop Note It ispossible that the trace isdisplayedas a mirror image with respect to the Y axis The peak of the hysteresis loop is brought to the right of the screen by reversing the connections of one of the coil windings ...

Страница 22: ...C33 the attenuators are adjusted in such a way that in all positions of SK3 the attenuation is frequency independent 2 Phase inverter stage Via the attenuator circuit the signal to be measured is applied to the phase inverter stage with the valves Bl and B2 This stage is driven on the control grid of valve Bl Valves Bl and B2 are coupled via the common cathode resistor R40 As the control grid of B...

Страница 23: ...rid of B2 As a result the image will shift in the vertical direction across the screen The shift voltageisapplied to the control grids of Bl and B2 via the voltage dividers with high impedance R76 R64 and R72 R70 respectively By means of these voltage dividers the anode potentials of valves Bl and B2 are made in dependent of the position of the shift controls R4 R4 so that the d c balance is maint...

Страница 24: ...This results in a positive voltage at the anode of B502 During the negative half of the cycle of the amplified trigger signal valve B502 will be cut off at a certain level lower threshold voltage Due to the repetitive switching action valve B502 becomes conductive so that a negative voltage arises at the anode of this valve In the case of a repeti tive trigger signal it is necessary for the correc...

Страница 25: ...d potential of B503 is equal to the cathode potential of this valve because the control grid isconnected to the positive supply voltage via R530 R53I and GR503 The working principle of the bootstrap integrator is shown in the figure below R r 1 _______ 1 Fig 12 Block diagram of the bootstrap integrator PEM 292 E126 This circuit ensures that the charging current of capacitor C remains constant inde...

Страница 26: ... potential of the control grid of B501 is undefinite but in principle will tend to rise to the anode potential of valve B501 However the time base capacitor does not allow a sudden voltage rise but will be charged in accordance with an e power curve Owing to the charging the control grid potential of valve GR503 91 B503 R531 C505 C516 C518 B501 Fig 13 Circuit diagram of the bootstrap integrator PE...

Страница 27: ... the voltage across the capacitor is equal to the cathode voltage of B503 this is the flyback of the sawtooth voltage At the end of the flyback C518 is charged again via diode GR503 and the low output impedance of cathode follower B501 This condition the waiting period is maintained until multivibrator B503 B503 is again changed over by a trigger pulse 3 Linearity of the sawtooth voltage The sawto...

Страница 28: ... the X amplifier The attenuator circuit which is operated with switch SK4 is built up in the same way as the circuit of the Y amplifier The only difference is that the step attenuator has only four possibilities of attenuation so that the deflection sensitivity of the X amplifier can be adjusted to seven values By means of trimmers C727 C728 and C729 and capacitors C733 C730 C731 and C732 the atte...

Страница 29: ... potentiometer R2 This potentiometer regulates the voltage on the focusing anode g3 of valve B301 Astigmatismof the electrostatic lens can be corrected by adjusting the voltage on the last acceleration anode g4 to the correct value by means of potentiometer R305 3 Barrel and pincushion distortion This is due to faults for instance fringe areas in the electrostatic lens and can be corrected by adju...

Страница 30: ...upply part is larger than that supplied by the series regulator Resistor R1003 is therefore connected in parallel with B1001 Voltage divider R1003 R1004 is provided for hum compensation 2 160 V This voltage is derived from the f 280 V supply voltage by means of voltage divider R1019 R1020 3 150V This is the full wave rectified and smoothed a c voltage supplied by winding S3 of the supply transform...

Страница 31: ...els which may be removed individually Rear panel This may be removed after the two screws A on the rear panel have been loosened a few turns Fig 14 Top panel After the rear panel has been detached the top panel may be removed by loosening the two screws B a few turns Fig 14 A B Fig 14 Removing the cabinet panels ...

Страница 32: ...bs Remove cap A Loosen nut B The knob may now be slid off the spindle Double knobs Remove cap A Loosen nut B Now the smallest knob can be slid off the spindle Loosen nut C Now the large knob can be slid off the spindle 010 C B Fig 15 Removing the knobs C REMOVING THE FRONT PANEL Remove the cabinet panels according to section II A Remove theknobs according to section II B Unsolder the connecting wi...

Страница 33: ...HE GRATICULE Turn the window approximately 15 anticlockwise and remove it from the front panel Fig 17 Now the graticule can be pushed out of the window The window can be adjusted horizontally by moving the stop bracket at the rear of the front panel Before moving the bracket first loosen the two fixing screws a little ...

Страница 34: ...V 5bOS Gaining access to the parts 35 7 Removing the graticule ...

Страница 35: ...List of mechanical parts page 56 This oil has both cleaning and lubricating properties After lubrication the switch must be rotated a few times through all positions i B CABINET PANELS If the PVC coated cabinet panels have become dirty they can after removal be washed with water and soap Chapter II A if necessary 1 use some scouring powder ...

Страница 36: ...0 R733 Measuring instrument L F generator L F generator L F generator None L F generator Square wave voltage generator None L F generator None Recommended PHILIPS apparatus GM 2317 GM2317 GM 2317 GM 2317 GM 2324 GM2317 Chapt V section D E E Fl F2 F4 Gl G2 G3 line R746 Square wave response C727 SK4 C728 C729 Phase characteristic C39 Time base generator Internal triggering R513 Stability R522 Sweep ...

Страница 37: ...on the cathode of valve BI001 does not exceed 10 mV If necessary select another value for RI004 D BARREL AND PINCUSHION DISTORTION Apply a sinusoidal voltage of 50 c s to BUS Also apply a sinusoidal voltage to BU5 however of a frequency of 10 kc s Adjust the amplitudes of both voltages in such a way that auniformly lit square of 7 5 X 7 5 divisions is obtained Reducea possible barrel or pincushion...

Страница 38: ... SK3 to position 01 V div Turn R6 clockwise R7 anti clockwise and R513 clockwise Set SKS to position I N Adjust R3 in such a way that the time base generator just cuts out Apply to BU2 a voltage of 80 mVp p frequency 2 kc s Adjust R513 in such a way that a triggered image appears Adjust R80in such a waythat the picture height is 8 divisions 3 Y shift Apply a sinusoidal voltage frequency 2 kc s to ...

Страница 39: ... 8 div 8 2 div 5 Continuous attenuator Turn R6 fully clockwise Apply a sinusoidal voltage to BU2 of a frequency of 2 kc s and an amplitude such that the picture height amounts to 3 5 divisions Turn R6 fully anti clockwise The picture height must now lie between 0 7 and 1 division 6 Square wave response Turn R6 clockwise Set SK3 to position 01 V div Apply a square wave voltage of a frequency of 2 k...

Страница 40: ...that the picture height is 8 divisions If the sensitivity is adjusted correctly see item 2 the voltage on BU2 must amount to approximately 28 3 mVr m s Increase the frequency of the voltage on BU2 to 200 kc s but keep the amplitude constant Now the picture height must be at least 6divisions Check whether a d c voltage connected to BU3 is blocked by the built in isolating capacitor C26 9 Hum in the...

Страница 41: ...ime base line is symmetrical with respect to the centre of the screen Select such a value for R733 that the length of the time base line lies between II and 13 divisions in all positions of SK2 If necessary readjust R746 4 X shift Apply a sawtooth voltage to BU3 To BUS apply a sinusoidal voltage of a frequency of 2 kc s and an amplitude such that the picture height is 3 divisions the voltage must ...

Страница 42: ...ockwise To BLJ4 apply a sinewave voltage of a frequency of 2 kc s and an amplitude such that the picture height is 3 5divisions Turn R7 fully anti clockwise Now the picture width must be between 0 7 and 1 division 7 Square wave response Turn SK4 and R7 fully clockwise Apply a square wave voltage to BU4 of a frequency of 2 kc s The picture width must be approximately8 divisions The square wave resp...

Страница 43: ...st amount to about 85 mV Increase the frequency of the voltage on BU4 to 200 kc s but keep the amplitude constant Now the picture width must be at least 6 divisions 10 Phase characteristic Set SK3 and SK4 to position 03 V div Turn R6 and R7 clockwise Apply a sinusoidal voltage to BU2 and BU4 of a frequency of 5 c s Both voltages must have the same phase and the same amplitude Both voltages must ha...

Страница 44: ...frequency of the input voltage successively from 5 c s to 200 kc s With a correct adjustment of R3 the picture must be sta tionary at these frequencies even if R7 is turned clockwise 2 External triggering To BU7 apply a voltage of 0 5 Vp_p which derived from the same voltage source as the voltage applied to BU2 With a correct adjustment of R3 the time base generator must start smoothly and the pic...

Страница 45: ...y of the square wave voltage must lie between 37 5 and 62 5 kc s If required correct the sweep time by selecting another value for R533 Check all positions of SK2 see table below Position SK2 Frequency square wave voltage 05 ms div 15 000 25 000 c s 1 ms div 7 500 12 500 c s 2 ms div 3 750 6 250 c s 5 ms div 1 500 2 500 c s 1 ms div 750 1 250 c s L 2 ms div 375 625 c s 5 ms div 150 250 c s 10 ms d...

Страница 46: ... in section II A B SUPPLY TRANSFORMER Remove the cabinet panels in accordance with the instructionsgiven in section II A Remove the seven screws A see Fig 16 Now the rear mounting plate can be pulled a little from the frame Unsolder all connections of the transformer Remove the four bolts and nuts B Fig 21 Now the transformer can be removed from the apparatus at the left hand side C SWITCHES SK2 S...

Страница 47: ...d F SWITCH WAFERS SK4 Remove switch SK4 according to section VI C Remove the six fixing screws from the two metal mounting strips Remove the mounting strips and the trimmer holder Remove potentiometer R7 together with its fixing bracket Now the switch wafers can be easily removed G POTENTIOMETERS ON THE FRONT PANEL Remove the front panel according to section II C Unsolder the connections from the ...

Страница 48: ...a little Subsequently the quality of the picture the deflection sensitivity and the sweep times of the time base must be checked and readjusted if necessary sections V B V C V D 2 V E 2 and V F 4 2 Valves diodes and other components All component parts have been taken from normal production stock After replacement of valves or other component parts it may be necessary to readjust the appropriate p...

Страница 49: ...R757 R746 Right hand side view adjusting elements and units I 6 R80 2J Left hand side view with adjusting elements and units BU1 BU6 BU2 BUS BU4 BUS Fig 26 Front view with adjusting elements ...

Страница 50: ...rms are shown in the drawings of the printed wiring boards and in the circuit diagrams To enable faults to be remedied quickly one should be familiar with the working of the apparatus and the instructions relating to its adjustment chapters I and V If necessary you can always apply to the PHILIPS Service Organisation Bl B2 B501 B502 B503 B701 B702 ECF 804 mA triode and pentode in parallel B3 B703 ...

Страница 51: ... x 12 910 18 x 110 Description Handle Bracket Text plate Knob 14mm 0 for spindle 6 mm 0 Knob with arrow for spindle 14 mm 0 Knob 22 mm 0 Cap for knob 22 mm 0 Arrow for knob 22 mm 0 Window Graticule Contrast enhancing plate Foot Knob 14mm 0 for spindle 4 mm 0 Socket Nut Mains voltage adapter Mains connection Earth terminal Switch socket Box Anode contact cap Valve holder B 301 Valve holder noval Va...

Страница 52: ... mechanical parts which are vulnerable or which are subject to wear Components marked with one star These components generally have a long or unlimited service life but their presence is essential for the correct working of the apparatus Stocking up of a few of these components depends on the following factors a the number of apparatus present in the country concerned b the necessity of having the...

Страница 53: ...57 F 69 ...

Страница 54: ...nces et des capacites d ajustage sont choisies lors de la fabrication de Tappareil All resistors are vaporized carbon resistors unless otherwisestated Sofern nicht anders angegeben handeft es sich hierbei um Kohlewider stande Alle weerstandenzijn opgedampte koolweerstanden tenzij anders aan gegeven Toutes les resistances sont du type au carbone vaporise sauf indica tion differente Fiir die englisc...

Страница 55: ... 10 20 50 10 10 20 50 ipF Description Paper Trimmer Trimmer Trimmer Ceramic Ceramic Ceramic Ceramic Polyester Ceramic Ceramic Ceramic Ceramic Ceramic Resistors Viderstande Weerstanden Resistances No R4 R6 R25 R26 R27 R28 R29 R30 R31 R32 R34 R35 R36 Service part E091 CG OOB12 916 GL200K 901 1M 901 200K B8 305 23D 52K6 901 12K B8 305 25D 3K33 B830525D 1K16 B8 305 25D 333E B8 305 25D 167E B8 305 26D ...

Страница 56: ...1 C irin lblUV Y Amplifler Trigger Pols B1 f R i i bhoper 3 B501 B502 POfi OZD 1 SK5 n 1 2 3 DC AC Y AMPL BU7 Ext Trigger E 5 6 DC AC X AMPL Fig 27 Block diagram ...

Страница 57: ...901 27K E 098 CG OOAOl 901 8K2 901 15K 901 6K8 Value 0 1 kQ 100a 22 kQ 1 MQ 100n 4700n ioon 20 kH ioo a 12 kO 48oo a 3300 Q 12 kH 500 kQ 100 Q 1500 a 1500 a iooa 0 1 MQ 82 kQ 82 kQ o i MO ioo a 6 8 MO 27 kn 6 8 MQ 100 Q 27 kO 1 kQ 8200 Q 15 kO 6800 a Power W 0 25 0 25 8 0 25 0 25 0 25 0 25 8 0 25 0 25 0 25 0 25 0 25 0 25 0 25 0 25 0 25 0 25 0 25 0 25 0 25 0 25 0 25 0 25 0 25 0 25 0 5 0 5 0 5 0 5 T...

Страница 58: ...65 GR1003 unit F 3R1001 unit F R 1019 unitF R80 R80 T1 T1 GR1005 R1 umtC 7B301 68301 SK5 SK 3 1 10 _L R57R6 R57R6R57Rt R4 Fig 28 Unit A Y amplifier ...

Страница 59: ...7 6301 B1 2 3 R57 500 kO 29 Diagram of the Y amplifier ...

Страница 60: ...K7 17 i c t S21 csw 10K 15 r c CS09 22K 13 C R522 D csoa t7K 11 i c prr CS07_ 100K 9 C R3 C506 220K 7 1 J f 1 5t 470K s J t O O B501 502 503 R 5 3 J a 1 SKJ O O O H 1 I R531 SKi 2 R733 PEM 299 E120 R522 47 kQ R520 is connected in parallel with R522 Fig 31 Diagram of the trigger pulse shaper and of the time base generator ...

Страница 61: ...tage V 500 500 500 500 400 400 400 400 400 400 400 400 500 500 500 500 500 350 700 Tolerance u 20 50 10 10 10 10 10 10 10 10 10 10 10 20 50 10 10 10 10 10 Description Ceramic Ceramic Ceramic Ceramic Polyester Polyester Polyester Polyester Polyester Polyester Polyester Polyester Ceramic Ceramic Ceramic Ceramic Ceramic Electrolytic PW Paper Resistors Widerstande Weerstanden Resistances No R3 R501 R5...

Страница 62: ...33K 48 766 05 22K 901 IOOE 901 100E 901 10M E003 AG D47K 901 Value 4700 n ISOkQ 47 kO 68 kH 100 kfl 120 ka 100 a 1500a 3300a 100 0 1 4 7 18 kQ 47 kD 82 kO 82 kO 68 kO 33 kO 22 kH 100O 100 a 10 MO 47 kH Power W 0 5 0 25 1 0 25 0 5 0 25 0 25 0 5 0 25 MO 8 0 25 0 25 0 25 1 I 8 0 25 0 25 0 5 1 0 25 Tolerance o 5 5 1 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 10 1 5 Description Potm lin par with R522 Wire wound Wir...

Страница 63: ...er Trimmer Trimmer Trimmer Ceramic Ceramic Ceramic Ceramic Polyester Ceramic Ceramic Ceramic Ceramic Polyester Resistors Widersta nde Weerstanden Resistances No R5 R7 R725 R726 R727 R728 R729 R730 R73I R732 R733 R734 R735 R736 Servicepart E091 CG OOB12 916 GL200K 901 1M B830526D 176K B8 305 23D 52K6 B8 305 23D 20K4 B8 305 25D 3K53 901 1K B8 305 23D 500E 901 27K 150K 902 K2K7 B8 305 26D 350K B8 305...

Страница 64: ...1 27K 901 2M2 901 IOOE 901 27K E098 CG OOA01 E003 AG D15K E003 AG D15K Value 100 kn 100 n 270 kn 22 kn 1 Mn 100 n 4 7 kn 100 n 20 kn 10 kn 100 n 12 kn 4 7 kn 3 3 kn 12 kn 500 kn 100 n L5kQ I 5kQ ioon 100 kn 82 kn 82 kH 100 kQ 100 n 2 2 MO 27 kn 2 2 MO 100n 27 kii i kn 15 kn 15 kn Power w 0 25 0 25 0 25 8 0 25 0 25 0 25 0 25 8 0 25 0 25 0 25 0 25 0 25 0 25 0 25 0 25 0 25 0 25 0 25 0 25 0 25 0 25 0 ...

Страница 65: ...r 79 i r J J J 9B301 10B301 R5 J u L J L J n ii L J R739 C1008 R780 R780 R532 UNIT A Fig 32 Unit C X amplifier 5B3 483 ...

Страница 66: ... Bo C734 R7 ECFBO 280V B 701 702 703 C739 R733 2 7kn R732 is connected in parallel with R733 Fig 33 Diagram of the amplifier ...

Страница 67: ...ces No R2 R301 R302 R303 R304 R305 R307 R308 R309 Service part 916 GE 500K 901 10M 901 470K 901 56K 901 E098CG OOA15 90I 220K 901 470K 916 GE 500K Value 500 kH 10 MH 470 kQ 56 kO 1 MQ 220 HI 470 kH 500 kQ Power W 0 25 0 25 0 25 0 25 0 25 0 25 Tolerance o 10 5 5 5 5 5 Description Potm lin Choice resistor Potm lin Potm lin Valve Rohre Buis Tube Diode B301 DH7 78 GR301 OA202 Cathode ray tube ...

Страница 68: ...3B301 85 PEM306 E116 R228 R1 R305R305 R2 unitD R309 Fig 34 Unit B beam control ...

Страница 69: ...301 DH 7_7 1610V R 1 PEM 303 E129 Fig 35 Diagram of the cathode ray tube circuit ...

Страница 70: ...itor Electrolytic PW Resistors Widerstande Weerstanden Resistances No Rl R1003 R1004 R1005 R1006 R1007 R1008 R1009 R1010 R1011 R1012 R1013 R1018 R1019 R1020 R1021 Service part 916 DE 1M 931 A4K7 902 K27E 901 1M 901 100E 901 100E 901 120K 901 1M2 901 4M7 901 6K8 15K 901 390K 901 22K 938 A6K8 901 560K 901 680K 901 680K Value 1 MQ 4 7 kQ 27 a 1 MQ 100Q 100O 120 kQ 1 2MQ 4 7 MH Power W 16 0 25 0 25 0 ...

Страница 71: ...len D autres pieces BI001 ECL82 B1002 85 A2 BI003 5642 GR1001 OA214 GR1002 GR1003 GR1004 GRI005 VL1 OA214 OA 214 OA2I4 B 250 C75 974 T125 TI001 M761528 Thermal fuse 125 C Mains trans former T1 T1 T1 C1006 PEM 305 E114 Fig 36 Unit high tension unit ...

Страница 72: ...92 C1004 unit A T1 T1 C1003 C1001 unit A T1 f T 0 5 S y c o a PEM 308 E111 C1002 unit A T1 T1 Fig 37 Unit F supply ...

Страница 73: ...I I I I J J J J J J J J J J J J J 22 21 10 SK2I 17 22 SK3I 93 21 22 PEM301 E 130 10 SK3H ...

Страница 74: ...R1004 PEM 300 119 ASZl B 1001 B1002 R1021 680 kQ VL1 is situated on the other side of point Fig 38 Diagram of the supply pa ...

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