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Tektronix 7623, Instruction Manual

The Tektronix 7623 is a high-performance oscilloscope that enables precise waveform analysis. Enhance your troubleshooting capabilities with its advanced features. For effortless operation, make sure to download the free Instruction Manual from manualshive.com. Explore the comprehensive user manual to fully utilize the potential of this exceptional product.

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Circuit

 

Description

—

7623/R7623

 

Service

circuitry

 or the Bi-Stable circuitry controls the

 Bi-Stable 

Mesh

 Amplifier. In

 the VAR PERSIST mode, Z17 is low, 

allowing

 transistor Q1347

 to turn off. This reverse-biases 

diodes

 CR1348, CR1353, CR1341, CR1328, and CR1390, 

allowing

 the VAR PERSIST controls and control circuits to 

control

 the Bi-Stable

 amplifier. In

 the Bi-Stable

 mode, 

transistor

 Q1347

 is never turned off, so diodes CR1390, 

CR1341,

 CR1353, CR1348 are

 forward biased, preventing 

the

 Variable Persistence control

 circuits from influencing 

the 

Bi-Stable 

Mesh Amplifier. The Bi-Stable circuit controls 

the Bi-Stable

 Mesh when diodes

 CR1304

 and CR1328 are 

forwarded

 biased by Z19 at the junction of resistors R1328 

and diode CR1327.

 In the Bi-Stable mode at QB pulse time, 

the

 output of pin 3 of U1302A is low, reverse-biasing diode 

CR1303,

 and forward biasing CR1304. This

 changes the 

input resistance of the Bi-Stable amplifier, 

causing

 a high 

positive voltage 

level

 at the output of the Bi-Stable Mesh 

Amplifier. Capacitor 

C1306

 is allowed to turn on transistor 

Q1308, 

which 

lowers

 the gate voltage level on Q1313, 

enabling 

it to 

develop

 a ramp pulse. The

 ramp is generated 

until

 it reaches the BS

 Op level, then

 the BS Op level 

adjustment controls

 the circuit. See Fig. 3-44, the basic 

block

 diagram

 of

 the Bi-Stable Mesh

 circuit, which is 

located 

on the following page.

3-58

Summary of Contents for 7623

Page 1: ...MANUAL 7623 R7623 STORAGE OSCILLOSCOPE SERVICE MANUFACTURERS OF CATHODE RAY OSCILLOSCOPES ...

Page 2: ...ssure you the fastest possible service Please include the instrument Type Number or Part Number and Serial Number with all requests for parts or service Specifications and price change privileges reserved Copyright 1973 by Tektronix Inc Beaverton Oregon Printed in the United States of America All rights reserved Contents of this publication may not be reproduced in any form without permission of T...

Page 3: ... 1 4 Save Mode Operating Set Up Information 1 4 SECTION 2 CALIBRATION Calibration Interval 2 1 Tektronix Field Service 2 1 Using This Procedure 2 1 General 2 1 Index 2 1 Performance 2 1 Partial Procedure 2 1 Complete Calibration Procedure 2 1 TEST EQUIPMENT REQUIRED Special Calibration Fixtures 2 1 Calibration Equipment Alternatives 2 1 Test Equipment 2 2 Preliminary Control Settings 2 4 CALIBRATI...

Page 4: ... Alt 3 14 Add 3 14 Left 3 14 Vertical Binary 3 14 Plug In Binary 3 15 Output Buffers 3 16 TRIGGER SELECTOR 3 16 Trigger Mode And Add Signals 3 16 General 3 16 Vert Mode 3 16 Left 3 16 Right 3 18 Trigger Channel Switch 3 18 Trigger Output Amplifier 3 18 Vertical Signal Buffer 3 18 VERTICAL INTERFACE 3 19 Vertical Channel Switch 3 19 Auxiliary Y Axis Input Amplifier 3 20 Delay Line Buffer 3 20 Delay...

Page 5: ...ply 3 30 15 Volt Supply 3 30 50 Volt Supply 3 30 130 Volt Supply 3 31 Graticule Light Supply 3 31 SIGNAL OUT BOARD 3 31 Vert Sig Out 3 31 Gate Out 3 31 Sawtooth Out 3 31 READOUT SYSTEM 3 31 Display Format 3 32 Developing The Display 3 32 Circuit Analysis Of The Readout System 3 35 Timer 3 35 Time Slot Counter 3 40 Word Trigger 3 40 Channel Counter 3 41 Single Shot Lockout 3 41 Encoding The Data 3 ...

Page 6: ...h Circuit 3 56 Bi Stable Mesh Circuit 3 56 SECTION 4 MAINTENANCE Panel Removal 4 1 Cabinet Model 4 1 Rack Model 4 1 Power Unit Removal 4 1 PREVENTIVE MAINTENANCE General Cleaning Exterior CRT Interior Lubrication Semiconductor Checks Recalibration 4 1 4 1 4 1 4 2 4 2 4 2 4 2 4 2 4 2 TROUBLESHOOTING Introduction Diagrams Circuit Boards Multi Pin Connector Color Code Wiring Color Code Resistor Color...

Page 7: ...or 4 13 Access To The Fan Motor For The R7623 4 13 Semiconductor Replacement 4 14 Access To The Power Transistors 4 14 Interconnecting Pin Replacement 4 14 Cathode Ray Tube Replacement 4 15 Switch Replacement 4 16 Graticule Bulb Replacement 4 16 Power Transformer Replacement 4 16 High Voltage Compartment 4 16 Fuse Replacement 4 16 Recalibration After Repair 4 16 Instrument Repackaging 4 17 SECTION...

Page 8: ...nd Non Store The in strument is designed to accept TEKTRONIX 7 Series plug in units to form a complete measurement system The flexibility of this plug in feature and the variety of plug in units available allow this system to be used for many measure ment applications The 7623 features a large cathode ray tube CRT screen 8 X 10 divisions with small spot size and fast stored writing rate 7623 R7623...

Page 9: ... plug in unit into one of the plug in compartments align the slots in the top and bottom of the plug in unit with the associated guide rails in the plug in compartment Push the plug in unit firmly into the plug in compartment until it locks into place To remove the plug in unit pull the release latch on the plug in unit to disengage it and pull the unit out of the plug in compartment Plug in units...

Page 10: ...compartment signal at a one megahertz rate RIGHT Signals from the right plug in compartment are displayed 8 TRIG SOURCE Selects the source of the internal trigger signals for the horizontal compartment LEFT Trigger signals are from the left vertical plug in compartment only VERT MODE Trigger signals are from the vertical compart ment being displayed except in the CHOP and ADD modes then the trigge...

Page 11: ... single sweep reset 4 EXT Z AXIS IN Input for intensity modulation of the CRT display 5 VERT SIG OUT Vertical signal selected by TRIG SOURCE switch LEFT RIGHT ALT and ADD 6 GATE OUT Gate signal selected by gate selector switch Main Auxiliary and Delay 7 SAWTOOTH OUT Positive going sawtooth from time base unit Fig 1 3 Rear Panel Controls and Connectors 1 3 ...

Page 12: ...ess ERASE button SAVE Mode Operation Set Up Information Obtain a stored display in any storage mode SAVE In Pressed in ERASE FAST Operating Set Up Information Press ERASE button SAVE INTEN FAST VAR PERSIST AUTO ERASE STORAGE LEVEL In pressed in Out Released Out Pressed and released Only one sweep is stored Press the MAN ERASE button to erase the display and to start another sweep for storing As de...

Page 13: ...en in the Test Equipment table is required for complete calibration of the 7623 Specifications given for the test equipment are the minimum necessary for accurate calibra tion Therefore the specifications of any test equipment used must meet or exceed the listed specifications All test equipment is assumed to be correctly calibrated and operating within the listed specification Detailed operating ...

Page 14: ...er accuracy within 0 1 Trigger output one millisecond CRT geometry check and adjustment Horizontal timing check and adjust ment a Tektronix 2901 Time Mark Gen erator b Tektronix 184 Time Mark Gen erator 4 Medium frequency con stant amplitude signal gen erator Frequency 50 to 100 megahertz reference fre quency 50 kilohertz out put amplitude variable from 5 millivolts to 5 Volts peak to peak into 50...

Page 15: ...tituted if lower per formance is acceptable 10 10X passive probe Compatible with 7B series external trigger input Chopped mode operation check adjustment pro cedure a Tektronix P6053 or P6054 Probe may be shared with test oscilloscope 11 T connector Connectors BNC External Z axis operation check a Tektronix Part No 103 0030 00 12 Termination Impedance 50 ohms accuracy 2 connec tors BNC Horizontal ...

Page 16: ...Connect the instrument to a power source that meets the voltage and frequency requirements The applied voltage should be near the center of the voltage range marked on the rear panel see Section 1 for information on converting this instrument from one operating voltage to another NOTE If correct line voltage is not available use a variable autotransformer to provide the correct input voltage 3 Set...

Page 17: ...Vertical Centering Page 2 12 13 Check Vertical Gain Page 2 12 14 Check Vertical Linearity Page 2 13 15 Adjust Vertical High Frequency Com pensation Page 2 13 16 Check Vertical Amplifier Bandwidth Page 2 13 17 Check Vertical Amplifier Isolation Page 2 14 18 Check Added Operation Page 2 14 19 Check Alternate Operation Page 2 14 20 Check Vertical Chopped Mode Opera tion Page 2 15 Triggering System 21...

Page 18: ...s Page 2 23 45 Check ERASE and FAST Transfer Pulses 46 Check High Speed Mesh Pump Pulses Page 2 24 47 Check Pump Pulse Frequency Page 2 24 48 Check Adjust STORAGE LEVEL Range 49 Check FAST Writing Rate Page 2 25 50 Check Adjust FAST Stability Page 2 25 51 Check Adjust Variable Persistence Mode Page 2 26 and Voltage Levels Page 2 27 52 Check Adjust Variable Persistence Pulse Amplitude Page 2 28 53 ...

Page 19: ...g of exactly 50 volts e INTERACTION Change in setting of R881 may affect the operation of all circuits within the 7623 2 Check Remaining Power Supply Voltages a CHECK Table 2 1 lists the low voltage power supplies in this instrument Check each supply with the precision DC voltmeter for output voltage within the given tolerance connect meter ground lead to chassis ground Power supply test points ar...

Page 20: ...M to measure at least 1500 volts Then connect it between the high voltage test point see Fig 2 1 A and chassis ground c Pull out the power switch turn on the instrument Check meter reading 1475 volts 45 volts d Push in the power switch turn off the instrument Disconnect the DC voltmeter e Pull out the power switch turn on the instrument 2 8 ...

Page 21: ...ardizer calibration fixture or a vertical plug in in the left vertical compartment and depress the LEFT VERT MODE button Set the fixture for Vert or Horiz Step Resp amplitude fully counterclockwise and Position to midrange b Install the time base plug in in the horizontal compartment and set it for 1 0 ms division Adjust trig gering for a free running sweep If a 7B53A Time Base plug in is to be us...

Page 22: ...ack to the Aux In connector of the calibration fixture with the BNC to pin jack cable d Set the calibration fixture Position control for a centered display and the Amplitude control for about two divisions of vertical deflection e CHECK CRT display is well defined f ADJUST FOCUS control and Astigmatism adjust ment R1045 see Fig 2 2 to obtain best display definition g Disconnect the cable 6 Adjust ...

Page 23: ...nanosecond GR cable 50 ohm GR in line termination and the BNC T connector c Set the 7A15A for a deflection factor of one volt division d Set the 7B53A for auto internal triggering at a calibrated sweep rate of 10 microseconds division e Set the medium frequency generator for a two division display at its reference frequency 50 kilohertz f Connect the output of the BNC T connector to the EXT Z AXIS...

Page 24: ...2 3 to position the trace to the center horizontal line c Install the mainframe standardizer calibration fixture in the left vertical compartment Set the calibration fixture Test switch to VERT or HORIZ Gain and the Rep Rate switch to 250 kHz d ADJUST Bias R486 for maximum gain See Fig 2 3 13 Adjust Vertical Gain a Set the calibration fixture Test switch to VERT or HORIZ GAIN b Position the displa...

Page 25: ...50 nanoseconds 50 nanoseconds division C425and R425 First 20 nanoseconds 20 nanoseconds division C427 and R427 First 5 nanoseconds 20 nanoseconds division f Set the VERT MODE switch to RIGHT g CHECK Optimum square leading corner and flat top on the displayed pulse with aberrations not to exceed 0 1 or 0 1 division with total peak to peak aberrations not to exceed 0 1 division h ADJUST If necessary...

Page 26: ... at 100 megahertz i Set the VERT MODE switch to LEFT j CHECK CRT display for not more than 0 1 division of 100 megahertz signal k Disconnect all test equipment 18 Check ADD Operation a Install the other 7A15A in the left vertical compart ment b Set both 7A15A units for a deflection factor of 0 2 volt division c Connect the 0 4 V Calibrator signal to the inputs of the 7A15A units with the BNC to pi...

Page 27: ...3A for auto external triggering at a sweep rate of 0 2 microsecond division f CHECK CRT display for chopped waveform dis play with duration of the time segment from each channel including the blanked portion between two and three divisions Also check that the unblanked visible portion Fig 2 4 Location of TP67 on Logic board shown with power unit removed of the time segment from each channel consis...

Page 28: ... fixture in the right vertical compartment and the 7A15A in the left vertical compartment j CHECK CRT display both square wave displays are stable b Install the 7853A in the horizontal compartment k Set the TRIG SOURCE switch to LEFT c Set the 7B53A for auto internal triggering at a sweep rate of 0 5 millisecond division I CHECK CRT display Calibrator display only is stable d Set the 7A15A for a d...

Page 29: ...ction plate connectors of the 7623 be sure probes are compensated d Set both channels of the test oscilloscope for a vertical deflection factor of 0 5 volt division five volts division at probe tip in the chop dual trace mode with the input coupling set to ground e Position the ground reference traces displayed on the test oscilloscope to the center horizontal line of the graticule Do not change t...

Page 30: ...ough 25 25 Adjust High Frequency Timing a Install the 7A15A in the left vertical compartment b Connect the time mark generator to the input con nector of the 7A15A with the 42 inch 50 ohm BNC cable and the 50 ohm BNC termination c Set the 7853A for auto external triggering at a sweep rate of one millisecond division d Position the display so that the first and ninth traces are near the far left an...

Page 31: ...ertical and horizontal deflection at an output frequency of 35 kilohertz e CHECK CRT lissajous display for an opening at the center vertical line of 0 28 division or less indicates 2 degrees or less phase shift see Fig 2 7 f Disconnect all test equipment leave plug in units installed Fig 2 7 Typical CRT display when checking X Y phase shift c Set the 7B53A for auto triggering at a sweep rate of on...

Page 32: ...apacitor i Disconnect the probe 29 Auto Focus Compensation and Operating Levels a Connect the probe tip to R1137 Z Axis output b ADJUST The INTENSITY control for three divi sions of vertical deflection on the CRT Position the display so the negative leading edge of the waveform is displayed c ADJUST C1138 for optimum square negative leading corner use a low capacitance screwdriver to adjust the va...

Page 33: ... the 0 4 V Calibrator pin jack and pin jack ground f CHECK Meter reading 0 4 volt 0 004 volt with in 0 008 volt if this measurement is made outside the 15 C to 35 C range g Connect the precision DC voltmeter between the 40 mV Calibrator pin jack and pin jack ground h CHECK Meter reading 40 millivolt 0 4 millivolt within 0 8 millivolt if this measurement is made outside the 15 C to 35 C range i Dis...

Page 34: ...witch to LEFT VERT C Connect the 0 4 V CALIBRATOR signal to the input of 7A15A in the left vertical compartment Set both vertical amplifiers for a deflection factor of 0 2 volts division d CHECK That a two division signal is displayed by the left vertical amplifier e Set VERT Mode switch to RIGHT and check that a signal of about five divisions is displayed by the right vertical amplifier f Interch...

Page 35: ...AGE selector switch in the MAIN GATE position b CHECK That displayed signal is about five divi sions in amplitude c Set the gate selector switch to AUXILIARY Check that the displayed signal is about five divisions in amplitude d Set the GATE selector switch to DELAY NOTE No output will be present with the 7B53A horizontal time base plug in A delay gate signal is present with only a 7B71 or a 7B51 ...

Page 36: ... ADJUST Character height size R2273 as needed d ADJUST Character scan R2128 if characters are over scanned e Remove the 7A18 from the left vertical and install it in the right vertical compartment Push and hold the identify buttons on the 7A18 Check that the words identify are positioned within the center third of the graticule f Remove the 7A18 from the right vertical and install it in the horizo...

Page 37: ...epeat steps e through g j Set the Time Division setting on the horizontal time base plug in unit to 1 second division k CHECK That the erase cycle does not occur until after the first sweep I Press the VAR PERSIST button m CHECK That there is no Auto Erase function in the Variable Persistance Mode Press the AUTO ERASE button out 40 CHECK SAVE Function a Press the SAVE button in b Press the ERASE b...

Page 38: ...T button g CHECK That the Readout display is stored after the trace display is stored h Press the MULTI TRACE button i Set the TIME DIV on the horizontal time base plug in unit to 2 second division j Press the ERASE PREP IN MULTI TRACE FAST button k CHECK That a new trace is stored but the Readout display has not changed in value readout is turned off l Press the MULTI TRACE button out m Press the...

Page 39: ...or 144 V to 156 V ce2 60 V to 80 V ce3 30 V to 50 V CE 67 2 V to 72 8 V FGA 34 5 V to 37 5 V FGK Approximately 50 V b Install the vertical amplifier unit in the left vertical compartment e Press the BI STABLE button c Install the Horizontal time base unit in the horizontal compartment d Press the NON STORE button Fig 2 10 Storage adjustments and storage test points Cal Storage board f CHECK Storag...

Page 40: ...p CHECK lest oscilloscope display for an erase wave form see Fig 2 11 43 Adjust Bi Stable Operating Level a Connect the low frequency sine wave generator to the left vertical amplifier plug in unit b Set the frequency of the sine wave generator for a three kilohertz signal at 3 2 divisions of vertical deflection c Set the horizontal time base plug in unit for a sweep rate of 0 1 millisecond divisi...

Page 41: ...n the hori zontal time base plug in unit A stored display should be visible i CHECK Storage test points see Fig 2 10 Table 2 6 lists the storage test points and their voltage tolerances Connect the test oscilloscope 10X probe to each storage test point in turn setting the test oscilloscope vertical deflection factor to 1 0 V 2 0 V and 5 0 V as required TABLE 2 6 Test Points Tolerance High Speed Me...

Page 42: ...K Transfer pulse amplitude is greater than 540 volts above ground e CHECK Erase pulse amplitude is approximately 320 volts above ground f CHECK That erase ramp is less than 375 ms long and that the ramp starts at zero volt level or below 46 Check High Speed Mesh Pump Pulses a Set the test oscilloscope to 5 0 V division vertical deflection 50 V divison at probe tip and a sweep rate of 1 0 microseco...

Page 43: ...vel and the Prep level at zero voltage difference to a voltage level where the screen is just dark Increase both levels until the screen is fully saturated Increase the Prep level until the corners of the storage screen start to go dark after an erase cycle f Set the STORAGE LEVEL control counterclockwise g CHECK That the storage screen turns dark h Connect the 50 kilohertz signal from the medium ...

Page 44: ...e storage screen c ADJUST CE3 and CE2 R1480 and R1470 so that the storage screen is uniformly bright This completes the calibration checkout procedure for the 7623 Disconnect all test equipment and replace the side panels If the instrument has been completely checked and adjusted to the tolerances given in this procedure it will meet or exceed the specifications given in Section 1 2 32 ...

Page 45: ...al deflection for the CRT The internal trigger signals from the vertical plug in units are connected to the Trigger Selector circuit This circuit selects the trigger signal which is connected to the horizontal plug in unit The Calibrator circuit produces a square wave output signal with accurate amplitude which can be used to check the calibration of this instrument and the compensation of probes ...

Page 46: ...1965 The following circuit analysis is written around the detailed block diagrams which are given for each major circuit These detailed block diagrams give the names of the individual stages within the major circuits and show how they are connected together to form the major circuit The block diagrams also show the inputs and outputs for each circuit and the relationship of the external controls a...

Page 47: ... New York Chapters 9 11 1965 Symbols The operation of circuits within the 7623 which use digital techniques is described using the graphic symbols set forth in military standard MIL STD 806B Table 3 1 pro vides a basic logic reference for the logic devices used within this instrument Any deviations from the standard symbology or devices not defined by this standard will be described in the circuit...

Page 48: ...bol Triggered toggle Flip Flop OR gate with LO state indicator at the A input The output of this gate is HI if either the A input is LO or the B input is HI Normally superimposed on an input line to a logic symbol Indicates that this input usually the trigger input of a flip flop responds to the indi cated transition of the applied sig nal Input Output A B X LO LO HI LO HI HI HI LO LO HI HI HI A b...

Page 49: ...HI HI HI LO Output conditions shown after trigger pulse Triggered Set Clear J K Flip Flop A bistable device with three or more inputs and two outputs either or both outputs may be used When triggered the outputs change state in response to the states at the inputs prior to the trigger The outputs are complementary i e when one output is HI the other is LO The edge symbol on the trigger T input may...

Page 50: ...tion in relation to the plug in installed and or selected plug in control settings and the 7623 control settings A schematic of this circuit is shown on diagram 2 at the rear of this manual Logic Block Diagram A block diagram of the Logic Circuit is shown in Fig 3 2 This diagram shows the source of the input control signals the output signals produced by this circuit and the basic interconnections...

Page 51: ...Fig 3 2 Block diagram of Logic circuit Circuit Description 7623 R 7623 Service ...

Page 52: ...en both of these inputs are HI the collector current of U99D lt is maximum This maximum level of I is determined by current I in the base circuit of U99D established by networks R76 R77 and R62 R63 into R110 and the collector of U99E During Vertical Chopped Blanking the respective input level goes LO This shunts the current lj from the base of U99D so the collector current of U99D lt drops to mini...

Page 53: ...ignal from the EXT Z AXIS input connector are connected to the emitter of Q90B These signals modulate the level of l2 to in turn modulate the intensity of the display When readout information is to be displayed on the CRT the Z Axis shutdown goes LO This forward biases Q180 and it saturates shunting l1 through Q108 to ground 1 his reduces the output current to zero during the readout time Clock Ge...

Page 54: ...it U55B Fig 3 5A This stage determines if Vertical Chopped Blanking pulses are re quired based upon the operating mode of the vertical system or the plug in units dual trace units only Vertical Chopped Blanking pulses are produced if 1 VERT MODE switch is set to CHOP 2 dual trace vertical unit is operating in the chopped mode and that unit is being displayed 3 dual trace vertical unit is operating...

Page 55: ...t to ALT Vertical Chopped Blanking pulses are produced only during the time that the left vertical unit is to be displayed unless right vertical unit is also set for chopped operation Circuit Description 7623 R7623 Service 3 RIGHT VERTICAL UNIT SET FOR CHOPPED OPERATION If the right vertical unit is set for chopped mode operation is the same as described previously for the left vertical unit excep...

Page 56: ...rcuit these D type flip flops operate as triggered toggle flip flops The two megahertz clock pulses from the Clock Gen erator stage are connected to the trigger T input of U123B As connected U123B changes output states with each positive going Clock pulse and the signal at its 1 output is a square wave which switches between the HI and LO levels at a one megahertz rate This signal is connected to ...

Page 57: ...indicated when all four output lines are LO Operation of this stage in all positions of the VERT MODE switch is as follows Right When the VERT MODE switch is set to RIGHT a HI level is connected to the Buffer Amplifier through R126 and CR126 The LO level at the anodes of diodes CR125 and CR130 holds them reverse biased The resultant Vertical Mode Command output from the Vertical Mode Buffer Amplif...

Page 58: ...s this flip flop to operate in the triggered mode A logic diagram of the Vertical Binary stage is shown in Fig 3 10 The operation of the Vertical Binary stage is controlled by the level of the ALT Mode line from the VERT MODE switch When this switch is set to ALT a HI level is connected to the emitter of Q150 through R152 This HI level disables Q150 so its collector remains HI As a result Q150 has...

Page 59: ...al plug in units if a sweep is not being produced by the horizontal plug in unit Plug In Binary The Plug In Binary stage consists of U156B which is connected as a triggered flip flop with direct set input The trigger input for this stage is the Display Right Command from the Vertical Binary stage When the VERT MODE switch is set to ALT the repetition rate of the Display Channel 2 Command output of...

Page 60: ... CR1026 and S1011 This holds Q314 reverse biased to provide a LO level to pin 4 of U324 see Fig 3 14 When the VERT MODE switch is set to ALT 5 volts is applied to the base of Q314 through CR1021 and S1011 Q314 is forward biased and its emitter level is determined by the Mainframe Vertical Mode Command signal from the Logic circuit applied to its collector This signal switches between the HI level ...

Page 61: ...Circuit Description 7623 R7623 Service VERT MODE Fig 3 13 Detailed block diagram of Trigger Selector circuit along with simplified diagram of trigger source selection circuitry 3 17 ...

Page 62: ...e left vertical unit passes to the output while the trigger signal from the right vertical unit is blocked A HI level at pin 4 connects the trigger signal from the right vertical unit to the output and the trigger signal from the left vertical unit is blocked For VERT MODE operation in the ALT position of the VERT MODE switch the level at pin 4 switches between the LO and HI level at a rate determ...

Page 63: ...gain for each channel C208 R208 and C215 R215 provide frequency compensation Fig 3 15 Input output table for Trigger Channel Switch stage VERTICAL INTERFACE The Vertical Interface circuit selects the vertical deflec tion signal from the output of the left vertical and or the right vertical plug in unit Fig 3 16 shows a detailed block This stage is made up primarily of integrated circuit U214 which...

Page 64: ...tical unit is displayed when the Main frame Vertical Mode Command is HI When ADD vertical mode operation is selected a HI level is applied to pin 14 and the level at pin 4 is LO as determined by the Vertical Mode Control stage in the Logic Circuit This allows both the right and left vertical signals to pass to the output pins Now the signal from both vertical units is algebraically added and the r...

Page 65: ... of locating a display which overscans the graticule area Under normal operation 15 volts is connected to the base of Q496 from the BEAM FINDER switch see diagram 4 and 9 to reverse bias it Therefore the normal operating levels for U450 are determined by the resistive network connected to pins 3 6 and 16 When the BEAM FINDER switch is pressed the 15 volts is interrupted and the base of Q496 rises ...

Page 66: ...positive excursions is provided by Q551 via R555 C555 and Q558 for negative excur sions by Q560 via R563 Resistor R556 reduces the power dissipation in Q558 Resistors R566 R567 and R569 provide DC feedback and establish low frequency gain Capacitors C566 and C588 are adjusted for correct gain at fastest sweep rates C584 R584 provide thermal compensation Basic operation of the Left Output Amplifier...

Page 67: ...ned off and since there is no current through it its collector goes positive to produce the positive portion of the square wave At the same time C1871 begins to charge toward 15 volts through R1872 The emitter of Q1874 goes negative also as C1871 charges until it reaches a level about 0 6 volt more negative than the level at its base Then Q1874 is forward biased and its emitter rapidly rises posit...

Page 68: ...T This circuit also includes the Z Axis Amplifier stage to set the intensity of the CRT display and the Auto Focus Amplifier to assure optimum display focus Fig 3 21 shows a detailed block diagram of the CRT Circuit A schematic of this circuit is shown on diagram 7 at the rear of this manual Z Axis Amplifier The Z Axis signal from the Logic circuit and the Z Axis signal from the Readout system are...

Page 69: ... oscillator to drive high voltage transformer T1225 When the instrument is turned on assume that Q1216 comes into conduction first The collector current of Q1216 produces a corresponding current increase in the base feedback winding of T1225 to further increase the conducivity of Q1216 At the same time the voltage developed across the base feedback winding connected to Q1216 holds Q1218 reverse bi...

Page 70: ...er normal conditions this biases the control grid about 80 volts more negative than the cathode The negative level at the CRT cathode is connected to the cathode of CR1270 This level is held constant by the High Voltage Regulator as described previously The clipped voltage developed by diodes CR1264 and CR1268 is peak to peak rectified by diodes CR1269 and CR1270 and super imposed on this negative...

Page 71: ...nt 50 volt output level Q886 is connected as a differential amplifier to compare the feedback voltage at the base of Q886B against the reference voltage at the base of Q886A The error output at the collector of Q886B reflects the difference if any between these two inputs The change in error output level at the collector of Q886B is always opposite in direction to the change in the feedback input ...

Page 72: ...W NJ 00 Fifl 3 22 Low Voltage Power Supply detailed block diagram ...

Page 73: ...Circuit Description 7623 R 7623 Service ...

Page 74: ...CO NJ CD Fig 3 22 Low Voltage Power Supply detailed block diagram cont ...

Page 75: ...Circuit Description 7623 R 7623 Service ...

Page 76: ...n of this supply forces a change in the output level which always returns the base of Q886B to the same level as the base of Q886A In this manner the output level of the 50 Volt Supply can be set to exactly 50 volts by correct adjustment of R881 The 50 V Current Limiting stage Q908 Q909 Q910 protects the 50 Volt Supply if excess current is demanded from this supply All of the output current from t...

Page 77: ...h a gain of two determined by the ratio of feedback resistor R645 to the combined input resistance of R630 and R63 CR635 and CR676 provide protection against a high voltage inadvertently applied to the output connector Graticule Light Supply Power for the graticule lights is supplied by the Graticule Light Supply Rectified voltage for this supply is provided by 5 V Rectifier CR820 CR821 Q835 opera...

Page 78: ... graticule where the readout from each plug in unit is displayed Notice that channel 1 of each plug in unit is displayed within the top division of the CRT and channel 2 is displayed directly below within the bottom division Fig 3 26 shows a typical display Left Vert Right Vert Horizontal Fig 3 24 Location of readout words on the CRT identifying the originating plug in unit and channel one complet...

Page 79: ...Fig 3 25 Character Selection Matrix for 7623 Readout System Unused locations Available for future expansion of Readout System Operational address Circuit Description 7623 R 7623 Service ...

Page 80: ...ls for these units The encoded column and row data from the plug in units is selected by the Column Data Switch and Row Data Switch stages respectively These stages take the analog currents from the six data lines two channels from each of the three plug in compartments and produce a single time multiplexed analog voltage output which contains all of the column or row information from the plug ins...

Page 81: ...ning of the characters within each word The X and Y output signals are connected to the Horizontal Amplifier and Vertical Ampli fier through the Horizontal Output and Vertical Output stages respectively The Word Trigger stage produces a trigger from the End of Word pulse generated by the Time Slot Counter stage after the tenth time slot This Word Trigger pulse advances the Channel Counter to displ...

Page 82: ...Ca W G Fig 3 27 Detailed block diagram of Readout System Circuit Description 7623 R 7623 Service ...

Page 83: ...everse biased to disconnect Q2138 from U2272 and allow the Row Decoder stage to operate in the normal manner The next signal to be produced is the Vertical Horizontal Channel Switch OFF Command at pin 13 This positive going signal disconnects the plug in signals in the vertical and horizontal deflection systems so the plug in units do not control the position of the CRT beam during the readout dis...

Page 84: ...en the Display Skip condition occurs for all positions in a word Notice that there is no output at pin 12 13 14 and 16 under this condition This means that the CRT display is not interrupted to display characters Also notice that the triangle waveform at pin 6 does not go as far negative and that the negative portion of the trapezoidal waveform at pin 10 is shorter Complete details on operation of...

Page 85: ...advance pulse to the Channel Counter An advance pulse is also produced by U2155A when a Jump signal is received at pin 8 of U2155C This condition can occur during any time slot see Row Decoder for further information on origin of the Jump signal U2155D and U2155C are connected as a bistable flip flop The positive oing Jump signal at pin 8 of U2155C produces a LO at pin 10 This LO is inverted by U2...

Page 86: ... the flip flop The Single Shot Lockout stage remains in this condition until a positive going trigger pulse is applied to pin 8 of U2120C This trigger pulse produces a LO at pin 10 of U2120C which enables U2120B and disables U2120C Now the Timer can operate in the normal manner for another complete frame When word six is completed the Channel Counter produces another End of Frame pulse to again lo...

Page 87: ...0 respectively This addresses the µ prefix in the Character Selection Matrix The final data output is provided from time slot 9 by R190 connected to the column output and R90 to the row output These resistors encode three units of column current and four units of row current to cause a V volts to be displayed Time slot 10 is not encoded in accordance with the Standard Readout Format The resultant ...

Page 88: ...ter Selection Matrix which reduces the prefix and adds one zero to the display The resultant CRT readout with the previous program is 10 mV Three other lines of information are connected from the plug in compartments to the Readout System The column and row analog data from channel 2 of a dual channel plug in are connected to the Readout System through terminals A38 and B38 of the plug in interfac...

Page 89: ...d as a comparator Q2215A will remain on unless its base is pulled more negative than the base of Q2215B The analog data output from the Column Data Switch produces a 0 5 volt change at the base of Q2215A for each unit of column current that has been encoded by the plug in unit Therefore whenever any information appears at the output of the Column Data Switch the base of 02215A is pulled more negat...

Page 90: ... of the Column Decoder This produces a zero after the character displayed on the CRT during time slot 4 During time slot 6 memory B is interrogated to see if another zero should be added If another zero is necessary a second positive output is produced at pin 7 which again results in a column 1 output from the Column Decoder and a second zero in the CRT display Finally memory C is interrogated dur...

Page 91: ...Circuit Description 7623 R7623 Service Fig 3 35 Typical output waveforms for Zeros Logic and Memory stage operation at pin 7 of U2232I 3 45 ...

Page 92: ...rcuit provides current outputs to the Format Generator which produce the selected character on the CRT In a similar manner any of the 50 characters shown in the Character Selection Matrix can be displayed by correct addressing of the row and column Decimal Point Logic and Character Position Counter The Decimal Point Logic and Character Position Counter stage U2260 performs two functions The first ...

Page 93: ... the display Format Generator The X and V deflection signals produced by the Character Generator stage are connected to pins 2 and 7 respectively of Format Generator U2284 The Channel Address No 2 code from the Channel Counter is also connected to pins 1 8 and 15 of this stage The Channel Address No 2 code directs the Format Generator to add current to the X and Y signals to deflect the CRT beam t...

Page 94: ...Circuit Description 7623 R7623 Service or Fig 3 37 Flow chart of character generation sequence by the Readout System 3 48 ...

Page 95: ...r R177O R1767 and R1771 Voltage divider R1767 R1761 provides programmable unijunction Q1777 with a gate voltage slightly lower than the anode voltage This causes Q1774 to become forward biased and capacitor C1773 is allowed to discharge through Q1774 This produces a positive pulse at the base of Q1777 which inverts the pulse and triggers RS flip flop U1780A and U1780C for a C _ pulse and a Qß puls...

Page 96: ... Matrix MODE Z1 Z2 Z3 Z4 Z5 Z6 Z7 Z8 Z9 Z10 Z11 Z12 Z13 Z14 Z1S Z16 Z17 Z18 Z19 Z20 Z21 Z22 NONSTORE X X X X X X X X VAR PERSIST X X X X X X FAST X X X bistable X X X X MULTI TRACE X X INTEG X X X SAVE X X X X MANUAL AUTO Circuit Description 7623 R 7623 Service ...

Page 97: ...Circuit Description 7623 R7623 Service 3 51 ...

Page 98: ...Circuit Description 7623 R7623 Service Fig 3 39 Output Pulses for the Storage Circuits 3 52 ...

Page 99: ...Circuit Description 7623 R7623 Service Fig 3 40 Basic Block Diagram of the Storage Timing 3 53 ...

Page 100: ...r circuit of Q1724 is interrupted and no current goes to the readout circuit See Fig 3 41 Basic block diagram of the Readout Shut Down circuit Persistence Pulse and Pump Pulse Generator Circuits The oscillator is Q1552 a programmable unijunction transistor The timing components are resistor R1551 and capacitor C1551 The pulses are connected to the base of transistor Q1555 and Q1557 to form a compa...

Page 101: ...stor high speed operation amplifier The gain of each amplifier stage is changed by gating different input resistors into the input circuit at different times for different modes The control circuit is transistor Q1500 and Q1518 When transistor Q1500 is turned on resistors R1503 and R1523 become part of the input resistance to their amplifiers When transistor QI518 is turned on by pulse QF resistor...

Page 102: ... and CR1398 are reversed biased the pump pulses and the HS Prep adjustment are added to the input resistance of the amplifier In all modes except VAR PERSIST transistor Q1347 is on forward biasing diodes CR1390 CR1348 CR1353 and CR1341 This allows the FAST adjustment and control circuits to control the High Speed Mesh The inputs to U1302C control the time at which CR1409 or CR1408 are forward bias...

Page 103: ...Circuit Description 7623 R7623 Service 3 57 ...

Page 104: ...rcuit controls the Bi Stable Mesh when diodes CR1304 and CR1328 are forwarded biased by Z19 at the junction of resistors R1328 and diode CR1327 In the Bi Stable mode at QB pulse time the output of pin 3 of U1302A is low reverse biasing diode CR1303 and forward biasing CR1304 This changes the input resistance of the Bi Stable amplifier causing a high positive voltage level at the output of the Bi S...

Page 105: ...he power unit can be left connected to the rest of the instrument so that it can be operated in this position for troubleshooting To remove the power unit use the following procedure 1 Remove the side panels top panel for R7623 2 Remove the six screws which secure the power unit to the sides of the instrument see Fig 4 1 for locations of screws on R7623 3 Slide the power unit out of the rear of th...

Page 106: ...filter with a stream of hot water 3 Place the filter in a solution of mild detergent and hot water and let soak for several minutes 4 Squeeze the filter to wash out any dirt which remains 5 Rinse the filter in clean water and let dry 6 Coat the dry filter with an air filter coating available from air conditioner suppliers or order Tektronix Part No 006 0580 00 7 Let the filter thoroughly dry 8 Re ...

Page 107: ...Color Code All insulated wire and cable used in the 7623 is color coded to facilitate circuit tracing NOTE Color code of the AC power cord is as follows in accordance with National Electrical Code Black Line White Neutral Green with yellow stripe Safety earth ground Resistor Color Code In addition to the brown composi tion resistors some metal film resistors and some wire wound resistors are used ...

Page 108: ... Ç À Fig 4 2 Location of circuit boards in the 7623 ...

Page 109: ...Fig 4 3 Location of circuit boards in the R7623 Maintenance 7623 R 7623 Service ...

Page 110: ...hecks the simple trouble possibilities before proceeding with extensive troubleshooting The first few checks assure proper connection operation and calibra tion If the trouble is not located by these checks the remaining steps aid in locating the defective component When the defective component is located it should be replaced following the replacement procedures given under corrective maintenance...

Page 111: ...Maintenance 7623 R7623 Service Fig 4 5 Electrode configuration for semiconductors used in this instrument ...

Page 112: ...ipple with a test oscilloscope while varying the autotransformer throughout the regulating range of this instrument After the defective circuit has been located proceed with steps 6 and 7 to locate the defective component s 6 Check Voltages and Waveforms Often the defective component can be located by checking for the correct voltage or waveform in the circuit Typical voltages and waveforms are gi...

Page 113: ...Maintenance 7623 R7623 Service Fig 4 6 Circuit Isolation Troubleshooting Chart 4 9 ...

Page 114: ...DIODES A diode can be checked for an open or shorted condition by measuring the resistance between terminals With an ohmmeter scale having an internal source of between 800 millivolts and 3 volts the resistance should be very high in one direction and very low when the meter leads are reversed CAUTION Do not use an ohmmeter scale that has a high internal current High currents may damage the diodes...

Page 115: ...rminals mounted in plastic holders After soldering is completed clean the area around the solder connection with a flux remover solvent Be careful not to remove any information printed in the area Component Replacement Disconnect the instrument from the power source before replacing components General The exploded view drawings associated with the Mechanical Parts List located at rear of manual ma...

Page 116: ...nect the multi pin connectors from the rear of the Main Interface board Note the order of these connec tors so they can be correctly replaced 4 Remove the three screws from inside each plug in compartment which hold the plug in interface connectors to the chassis total of nine screws Also remove the hexagonal posts which secure the ground straps to the Main Interface board 5 Remove the Main Interf...

Page 117: ... in interface connectors can be replaced However it is recommended that the entire Main Interface board be replaced if a large number of the contacts are damaged An alternative solution is to refer the maintenance of the damaged Main Interface board to your local TEKTRONIX Field Office or representative Use the following procedure to replace an individual contact of the plug in interface connector...

Page 118: ... to Power Transistors The power transistors associated with the Low Voltage Power Supply are mounted on the heat radiator at the rear of the instrument To gain access to these transistors remove the screws which secure the plastic protective cover to the heat radiator The transistors are mounted in sockets so they can be removed from the rear by taking out the two screws in the mounting tabs cases...

Page 119: ...replaced an arrow is stamped on the circuit board and a matching arrow is molded into the plastic housing of the multi pin connector Be sure these arrows are aligned as the multi pin connector is replaced If the individual end lead pin connectors are removed from the plastic holder note the color of the individual wires for replacement Cathode Ray Tube Replacement To replace the cathode ray tube p...

Page 120: ...ith a direct replacement transformer When removing the transformer tag the leads with the corresponding terminal numbers to aid in connecting the new transformer After the transformer has been replaced check the performance of the complete instrument using the procedure given in theCalibration section High Voltage Compartment The components located in the high voltage compartment can be reached fo...

Page 121: ...repackaged in the original manner for maximum protection The original shipping carton can be saved and used for this purpose The repackaging illustration in the Mechanical Parts List shows how to repackage the 7623 and gives the part number for the packaging components New shipping cartons can be obtained from Tektronix Inc Contract your local TEKTRONIX Field Office or representative NOTE The pack...

Page 122: ...c EMT electrolytic metal tubular PT paper tubular WW wire wound F Fuse Y Crystal Ckt No Tektronix Part No Serial Model No Eff Disc Description ASSEMBLIES Al 670 1956 00 MAIN INTERFACE Circuit Board Assembly A2 670 1370 02 LOGIC Circuit Board Assembly A3 670 1371 05 TRIGGER SELECT Circuit Board Assembly A4 670 1373 06 VERTICAL INTERFACE Circuit Board Assembly A5 670 1958 00 VERTICAL AMPLIFIER Circu...

Page 123: ...003 00 0 01 µF Cer 150 V 802 202 C136 281 0547 00 2 7 pF Cer 500 V 102 C137 283 0000 00 0 001 µF Cer 500 V 1002 02 C138 281 0503 00 8 pF Cer 500 V 0 5 pF C146 281 0547 00 2 7 Cer 500 V 102 C148 281 0503 00 8 pF Cer 500 V 0 5 pF C149 283 0000 00 0 001 µF Cer 500 V 1002 02 C152 283 0000 00 0 001 µF Cer 500 V 1002 02 C166 281 0547 00 2 7 pF Cer 500 V 102 C168 281 0503 00 8 pF Cer 500 V 0 5 pF C193 28...

Page 124: ...010100 B019999X 10 pF Cer 500 V 102 C545 281 0550 00 120 pF Cer 500 V 102 C552 283 0002 00 0 01 µF Cer 500 V C555 283 0083 00 0 0047 µF Cer 500 V 202 C566 281 0095 00 XB020000 BO79999 0 2 1 5 pF Var Teflon C566 281 0064 00 B080000 0 25 1 5 pF Var Plastic C567 281 0557 00 B010100 B019999X 1 8 pF Cer 500 V C568 281 0097 00 B010100 B019999 9 35 pF Var Cer C568 281 0089 00 B020000 B079999X 2 8 pF Var ...

Page 125: ...0 C820 285 0555 00 0 1 µF Plastic 100 V 20 C82 290 0508 00 1800 µF Elect 15 V 100 l C823 283 0004 00 0 02 µF Cer 150 V C827 283 0077 00 XB090000 330 pF Cer 500 V 5 C858 283 0078 00 0 001 µF Cer 500 V 20 C866 283 0078 00 0 001 µF Cer 500 V 20 C876 283 0328 00 XB080000 0 03 µF Cer 200 V 80 20 C880 283 0638 00 130 pF Mica 100 V 1 C889 290 0415 00 5 6 µF Elect 35 V 10 C923 281 0591 00 5600 pF Cer 200 ...

Page 126: ...90 0391 00 15 µF Elect 30 V 102 C1241 283 0203 00 0 47 µF Cer 50 V 202 C1247 283 0044 00 0 001 µF Cer 3 000 V C1250 283 0105 00 0 01 µF Cer 2 000 V 802 202 C1254 283 0044 00 0 001 µF Cer 3 000 V C1255 283 0044 00 0 001 µF Cer 3 000 V C1257 281 0513 00 27 pF Cer 500 V 202 C1258 290 0164 00 1 µF Elect 150 V C1264 290 0164 00 1 µF Elect 150 V C1266 281 0513 00 27 pF Cer 500 V 202 C1268 283 0044 00 0 ...

Page 127: ...C1693 283 0000 00 0 001 µF Cer 500 V 100 0 C1701 283 0000 00 0 001 µF Cer 500 V 100 0 C1731 283 0000 00 0 001 µF Cer 500 V 100 0 C1749 290 0574 00 47 µF Elect 20 V 10 C1758 283 0080 00 0 022 µF Cer 25 V 80 20 C1760 283 0177 00 1 µF Cer 25 V 80 20 C1765 283 0068 00 0 01 µF Cer 500 V 100 0 C1773 283 0198 00 0 22 µF Cer 50 V 20 C1785 290 0573 00 2 7 µF Elect 50 V 20 C1810 283 0111 00 0 1 µF Cer 50 V ...

Page 128: ...55 152 0141 02 CR160 152 0141 02 CR238 152 0141 02 CR341 152 0141 02 CR349 152 0141 02 CR460 152 0269 00 CR461 152 0269 00 CR496 152 0141 02 CR530 152 0153 00 CR531 152 0141 02 CR532 152 0141 02 CR533 152 0153 00 CR543 152 0141 02 CR544 152 0141 02 CR549 152 0153 00 CR621 152 0141 02 CR622 152 0141 02 CR635 152 0141 02 CR641 152 0141 02 Silicon 1N4152 Silicon 1N4152 Silicon 1N4152 Silicon 1N4152 S...

Page 129: ...1 02 Silicon 1N4152 CR894 152 0141 02 Silicon 1N4152 CR896 152 0141 02 Silicon 1N4152 CR903 152 0066 00 Silicon diffused selected from 1N3194 CR920 152 0141 02 Silicon 1N4152 CR924 152 0061 00 Silicon CD8393 or FDH2161 CR925 152 0061 00 Silicon CD8393 or FDH2161 CR935 152 0066 00 Silicon diffused selected from 1N3194 CR941 152 0141 02 Silicon 1N4152 CR950 152 0141 02 Silicon 1N4152 CR951 152 0141 ...

Page 130: ...R1304 152 0141 02 Silicon 1N4152 CR1306 152 0141 02 XB0500000 Silicon 1N4152 CR1315 152 0141 02 Silicon 1N4152 CR1322 152 0141 02 Silicon 1N4152 CR1324 152 0141 02 Silicon 1N4152 CR1327 152 0141 02 Silicon 1N4152 CR1328 152 0141 02 Silicon 1N4152 CR1331 152 0141 02 Silicon 1N4152 CR1337 152 0141 02 Silicon 1N4152 CR1341 152 0141 02 Silicon 1N4152 CR1348 152 0141 02 Silicon 1N4152 CR1349 152 0141 0...

Page 131: ...52 0141 02 Silicon 1N4152 CR1522 152 0141 02 Silicon 1N4152 CR1523 152 0141 02 Silicon 1N4152 CR1528 152 0141 02 Silicon 1N4152 CR1535 152 0141 02 Silicon 1N4152 CR1536 152 0141 02 Silicon 1N4152 CR1542 152 0141 02 Silicon 1N4152 CR1547 152 0141 02 Silicon 1N4152 CR1560 152 0141 02 Silicon 1N4152 CR1562 152 0141 02 Silicon 1N4152 CR1573 152 0141 02 Silicon 1N4152 CR1597 152 0141 02 Silicon 1N4152 ...

Page 132: ...R1713 152 0141 02 Silicon 1N4152 CR1715 152 0141 02 Silicon 1N4152 CR1731 152 0141 02 Silicon 1N4152 CR1732 152 0141 02 Silicon 1N4152 CR1738 152 0141 02 Silicon 1N4152 CR1739 152 0141 02 Silicon 1N4152 CR1752 152 0141 02 Silicon 1N4152 CR1766 152 0141 02 Silicon 1N4152 CR1767 152 0141 02 Silicon 1N4152 CR1773 152 0141 02 Silicon 1N4152 CR1804 152 0141 02 Silicon 1N4152 CR1807 152 0141 02 Silicon ...

Page 133: ...e 2A 3AG fast blo F855 159 0083 00 Cartridge 0 15A 3AG fast blo F1000 159 0026 00 Cartridge 3 2A 3AG slo blo CONNECTORS J1 131 0767 02 B010100 B059999 Receptacle electrical 76 contact J1 131 0767 08 B060000 Receptacle electrical 76 contact J2 131 0767 02 B010100 B059999 Receptacle electrical 76 contact J2 131 0767 08 B060000 Receptacle electrical 76 contact J3 131 0767 00 B010100 B059999 Receptacl...

Page 134: ...707 00 150 nH L474 114 0330 00 0 8 2 µH Var L478 114 0330 00 0 8 2 µH Var L1098 108 0605 00 Y axis alignment L10991 108 0721 00 Trace rotation L1895 276 0535 00 Core toroid L1222 108 0646 00 80 µH L1635 120 0407 00 Toroid 5 turns single L2283 108 0331 00 0 75 µH LR193 108 0604 00 3 2 µH LR195 108 0604 00 3 2 µH LR198 108 0604 00 3 2 µH LR482 108 0331 00 0 75 µH TRANSISTORS Q90A B 151 0232 00 Silic...

Page 135: ...NP Tek Spec Q580 151 0347 00 Silicon NPN 2N5551 Q606 151 0221 00 Silicon PNP 2N4258 Q618 151 0221 00 Silicon PNP 2N4258 Q620 151 0220 00 Silicon PNP 2N4122 Q631 151 0190 00 Silicon NPN 2N39Ö4 or TE3904 Q634 151 0190 00 Silicon NPN 2N3904 or TE3904 Q640 151 0220 00 Silicon PNP 2N4122 Q662 151 0190 00 Silicon NPN 2N39O4 or TE3904 Q666 151 0190 00 Silicon NPN 2N3904 or TE3904 Q672 151 0188 00 Silicon...

Page 136: ... Spec Q1134 151 0250 00 B010100 B019999 Silicon NPN replaceable by FPS5551M Q1134 151 0347 00 B020000 Silicon NPN 2N5551 Q1136 151 0223 00 Silicon NPN 2N4375 Q1148 151 0188 00 Silicon PNP 2N3906 Q1152 151 0270 00 B010100 B019999 Silicon PNP selected from 2N3495 Q1152 151 0406 00 B020000 Silicon PNP Tek Spec Q1154 151 0250 00 B010100 B019999 Silicon NPN replaceable by FPS5551M Q1154 151 0347 00 B02...

Page 137: ... Q1586 151 0190 00 Q1591 151 0190 00 Silicon NPN 2N3439 Silicon NPN 2N3439 Silicon NPN 2N3439 Silicon NPN 2N3439 Silicon NPN 2N3904 or TE3904 Silicon PNP 2N3906 Silicon NPN 2N3904 or TE3904 Silicon PNP 2N425O Silicon NPN A5T5058 Silicon NPN A5T5058 Silicon NPN 2N3904 or TE3904 Silicon NPN 2N3904 or TE3904 Silicon NPN 2N3904 or TE3904 Silicon NPN 2N5551 Silicon NPN 2N5551 Silicon NPN 2N3904 or TE39...

Page 138: ...88 151 0508 00 Silicon programmable unijunction 2N6027 Q1805 151 0190 00 Silicon NPN 2N3904 or TE3904 Q1815 151 0190 00 Silicon NPN 2N39O4 or TE39O4 Q1832 151 0190 00 Silicon NPN 2N3904 or TE3904 Q1836 151 0190 00 Silicon NPN 2N3904 or TE3904 Q1843 151 0190 00 Silicon NPN 2N3904 or TE3904 Q1869 151 0190 00 Silicon NPN 2N3904 or TE3904 Q1874 151 0190 00 Silicon NPN 2N3904 or TE3904 Q1876 151 0220 0...

Page 139: ...W 52 R46 315 0151 00 150 Ω 1 4 W 52 R47 315 0683 00 68 kΩ 1 4 W 52 R48 315 0334 00 330 kΩ 1 4 W 52 R49 315 0105 00 1 MΩ 1 4 W 52 R50 315 0223 00 22 kΩ 1 4 W 52 R51 321 0193 00 1 kΩ 1 8 W 12 R53 315 0223 00 22 kΩ 1 4 W 52 R54 321 0193 00 1 kΩ 1 8 W 12 R55 315 0470 00 47 Ω 1 4 W 52 R56 315 0471 00 470 Ω 1 4 W 52 R57 315 0682 00 6 8 kΩ 1 4 W 52 R58 315 0101 00 100 Ω 1 4 W 52 R59 315 0103 00 10 kΩ 1 4...

Page 140: ...R106 315 0273 00 27 kΩ 1 4 W 52 R109 321 0243 00 3 32 kΩ 1 8 W 12 R110 321 0097 00 100 Ω 1 8 W 12 R112 321 0097 00 100 Ω 1 8 W 12 R123 315 0102 00 1 kΩ 1 4 W 52 R124 315 0511 00 510 Ω 1 4 W 52 R125 315 0102 00 1 kΩ 1 4 W 52 R126 315 0102 00 1 kΩ 1 4 W 52 R130 315 0102 00 1 kΩ 1 4 W 52 R132 315 0222 00 2 2 kΩ 1 4 W 52 R133 315 0102 00 1 kΩ 1 4 W 52 R134 315 0821 00 820 Ω 1 4 W 52 R135 315 0123 00 1...

Page 141: ...Ω 1 8 W 1 2 R202 321 1068 02 50 5 Ω 1 8 W 1 22 R204 321 1068 02 50 5 Ω 1 8 W 1 22 R206 321 1068 02 50 5 Ω 1 8 W 1 22 R208 315 0393 00 39 kΩ 1 4 W 52 R209 321 0741 02 40 9 Ω 1 8 W 1 22 R211 322 0197 00 1 1 kΩ 1 4 W 12 R212 321 0741 02 40 9 Ω 1 8 W 1 22 R214 322 0212 00 1 58 kΩ 1 4 W 12 R215 315 0393 00 39 kΩ 1 4 W 52 R216 321 0741 02 40 9 Ω 1 8 W 1 22 R218 322 0197 00 1 1 kΩ 1 4 W 12 R219 321 0741 ...

Page 142: ...1 0069 00 51 1 Ω 1 8 W 1Z R320 321 0218 00 1 82 kΩ 1 8 W 1Z R321 321 0061 00 42 2 Ω 1 8 W 1Z R322 315 0101 00 100 Ω 1 4 W 5Z R323 321 0061 00 42 2 Ω 1 8 W 1Z R324 322 0184 00 806 Ω 1 4 W 1Z R326 321 0061 00 42 2 Ω 1 8 W 1Z R327 322 0184 00 806 Ω 1 4 W 1Z R328 321 0061 00 42 2 Ω 1 8 W 1Z R329 315 0101 00 100 Ω 1 4 W 5Z R330 321 0049 00 31 6 Ω 1 8 W 1Z R332 321 0220 00 1 91 kΩ 1 8 W 1Z R333 321 0143...

Page 143: ...kΩ 1 8 W 1Z R415 315 0153 00 15 kΩ 1 4 W 5Z R416 315 0911 00 910 Ω 1 4 W 5Z R417 315 0301 00 300 Ω 1 4 W 5Z RT417 307 0125 00 500 Ω Thermal R418 315 0751 00 750 Ω 1 4 W 5Z R420 315 0271 00 270 Ω 1 4 W 5Z R421 311 1261 00 500 Ω Var R423 317 0470 00 47 Ω 1 8 W 5Z R424 317 0470 00 47 Ω 1 8 W 5Z R425 311 1260 00 250 Ω Var R427 311 1007 00 20 Ω Var R429 321 0114 00 150 Ω 1 8 W 1Z R433 321 0068 00 49 9 ...

Page 144: ...W 52 R474 310 0701 00 430 Ω 8 W WW 12 R477 315 0820 00 82 Ω 1 4 W 52 R478 310 0701 00 430 Ω 8 W WW 12 R480 307 0103 00 2 7 Ω 1 4 W 52 R484 321 0197 00 1 1 kΩ 1 8 W 12 R486 311 1260 00 250 Ω Var R488 323 0054 00 35 7 Ω 1 2 W 12 R490 307 0103 00 2 7 Ω 1 4 W 52 R491 315 0100 00 10 Ω 1 4 W 52 R495 315 0822 00 8 2 kΩ 1 4 W 52 R501 321 1068 01 50 5 Ω 1 8 W 1 22 R502 315 0100 00 10 Ω 1 4 W 52 R503 321 10...

Page 145: ...5 00 2 15 kΩ 1 8 W IX R549 315 0102 00 1 kΩ 1 4 W 5X R551 303 0470 00 47 Ω 1 W 5X R555 315 0470 00 47 Ω 1 4 W 5X R556 301 0393 00 39 kΩ 1 2 W 5X R558 323 0231 00 2 49 kΩ 1 2 W IX R559 315 0100 00 10 Ω 1 4 W 5X R561 315 0100 00 10 Ω 1 4 W 5X R562 323 0097 00 100 Ω 1 2 W IX R563 323 0066 00 47 5 Ω 1 2 W IX R565 315 0101 00 100 Ω 1 4 W 5X R566 323 0287 00 9 53 kΩ 1 2 W IX R567 323 0287 00 9 53 kΩ 1 2...

Page 146: ...1 8 W 1Z R610 307 0106 00 4 7 Ω 1 4 W 5Z R612 321 0193 00 1 kΩ 1 8 W 1Z R613 321 0222 00 2 kΩ 1 8 W 1Z R615 315 0240 00 24 Ω 1 4 W 5Z R617 321 0020 00 15 8 Ω 1 8 W 1Z R619 315 0101 00 100 Ω 1 4 W 5Z R622 321 0208 00 1 43 kΩ 1 8 W 1Z R623 307 0106 00 4 7 Ω 1 4 W 5Z R625 321 0224 00 2 1 kΩ 1 8 W 1Z R627 315 0101 00 100 Ω 1 4 W 5Z R630 315 0101 00 100 Ω 1 4 W 5Z R633 315 0222 00 2 2 kΩ 1 4 W 5Z R636 ...

Page 147: ... 0472 00 4 7 kΩ 1 2 W 102 R821 302 0472 00 4 7 kΩ 1 2 W 102 R822 315 0102 00 1 kΩ 1 4 W 52 R823 315 0151 00 150 Ω 1 4 W 52 R824 315 0470 00 47 Ω 1 4 W 52 R826 315 0302 00 3 kΩ 1 4 W 52 R827 315 0472 00 4 7 kΩ 1 4 W 52 R830 315 0911 00 910 Ω 1 4 W 52 R831 315 0392 00 3 9 kΩ 1 4 W 52 R833 315 0683 00 68 kΩ 1 4 W 52 R837 307 0054 00 3 6 Ω 1 2 W 52 R838 307 0054 00 3 6 Ω 1 2 W 52 R853 315 0473 00 47 k...

Page 148: ... Ω 1 4 W 57 R903 308 0677 00 1 Ω 2 W WW 57 R904 308 0679 00 0 51 Ω 2 W WW 57 R906 315 0304 00 300 kΩ 1 4 W 57 R9O7 315 0104 00 100 kΩ 1 4 W 57 R908 315 0431 00 430 Ω 1 4 W 57 R910 315 0681 00 680 Ω 1 4 W 57 R911 315 0563 00 56 kΩ 1 4 W 5 R912 315 0182 00 1 8 kΩ 1 4 W 57 R915 321 1296 07 12 kΩ 1 8 W 1 10 R916 321 0924 07 40 kΩ 1 8 W 1 10 R918 301 0683 00 68 kΩ 1 2 W 5 R921 315 0912 00 9 1 kΩ 1 4 W ...

Page 149: ... 1 8 W 1 102 R973 315 0104 00 B010100 B069999 100 kΩ 1 4 W 52 R973 315 0683 00 B070000 68 kΩ 1 4 W 52 R974 315 0303 00 XB070000 30 Ml 1 4 W 52 R975 315 0362 00 3 6 kΩ 1 4 W 52 R977 315 0184 00 180 kΩ 1 4 W 52 R979 315 0822 00 8 2 Ml 1 4 W 52 R980 315 0164 00 160 Ml 1 4 W 52 R983 315 0472 00 4 7 Ml 1 4 W 52 R985 304 0470 00 47 Ω 1 W 102 R986 315 0122 00 1 2 Ml 1 4 W 52 R989 308 0678 00 0 1 Ω 2 W WW...

Page 150: ...2 R1137 315 0121 00 120 Ω 1 4 W 52 R1138 315 0682 00 6 8 kΩ 1 4 W 52 R1139 323 0312 00 17 4 kΩ 1 2 W 12 R1141 315 0912 00 9 1 kΩ 1 4 W 52 R1144 315 0562 00 5 6 kΩ 1 4 W 52 R1146 303 0203 00 20 kΩ 1 W 52 R1148 315 0102 00 1 kΩ 1 4 W 52 R1149 315 0102 00 1 kΩ 1 4 W 52 R1151 315 0100 00 10 Ω 1 4 W 52 R1152 315 0392 00 3 9 kΩ 1 4 W 52 R1155 315 0103 00 10 kΩ 1 4 W 52 R1157 315 0121 00 120 Ω 1 4 W 52 R...

Page 151: ...R1245A R1245B 307 0386 01 250 kΩ 24 5 MΩ Thlck fllm R1245C f 20 4 MΩ R1245D 7 15 MΩ R1247 315 0475 00 4 7 MΩ 1 4 W 52 R1248 315 0105 00 1 MΩ 1 4 W 52 R1250 311 1257 00 5 MΩ Var R1252 315 0915 00 9 1 MΩ 1 4 W 52 R1253 315 0103 00 10 kΩ 1 4 W 52 R1257 315 0105 00 1 MΩ 1 4 W 52 R1258 315 0103 00 10 kΩ 1 4 W 52 R1259 315 0103 00 10 kΩ 1 4 W 52 R1261 311 1232 00 50 kΩ Var R1263 315 0103 00 10 kΩ 1 4 W ...

Page 152: ...1 4 W 52 R1343 315 0223 00 22 kΩ 1 4 W 52 R1344 315 0103 00 10 kΩ 1 4 W 52 R1345 315 0103 00 10 kΩ 1 4 W 52 R1346 315 0103 00 10 kΩ 1 4 W 52 R1349 321 0445 00 422 kΩ 1 8 W 12 R1350 311 1228 00 10 kΩ Var R1351 315 0103 00 10 kΩ 1 4 W 52 R1353 315 0223 00 22 kΩ 1 4 W 52 R1355 315 0223 00 22 kΩ 1 4 W 52 R1357 321 0481 00 1 MΩ 1 8 W 12 R1358 321 0466 00 698 kΩ 1 8 W 12 R1360 311 1232 00 50 kΩ Var R136...

Page 153: ... 0356 00 49 9 kΩ 1 8 W 12 R1425 315 0272 00 2 7 kΩ 1 4 W 52 R1429 315 0102 00 1 kΩ 1 4 W 52 R1431 315 0103 00 10 kΩ 1 4 W 52 R1432 315 0203 00 20 kΩ 1 4 W 52 R1435 315 0472 00 4 7 kΩ 1 4 W 52 R1437 315 0223 00 22 kΩ 1 4 W 52 R1439 311 1232 00 50 kΩ Var R1441 321 0396 00 130 kΩ 1 8 W 12 R1444 315 0223 00 22 kΩ 1 4 W 52 R1446 315 0223 00 22 kΩ 1 4 W 52 R1447 315 0223 00 22 kΩ 1 4 W 52 R1448 315 0103...

Page 154: ...00 1 MΩ 1 4 W 52 R1503 321 0414 00 200 kΩ 1 8 W 12 R1505 321 0373 00 75 kΩ 1 8 W 12 R1507 321 0393 00 121 kΩ 1 8 W 12 R1508 321 0414 00 200 kΩ 1 8 W 12 R1509 321 0449 00 464 kΩ 1 8 W 12 R1513 321 0393 00 121 kΩ 1 8 W 12 R1515 315 0103 00 10 kΩ 1 4 W 52 R1516 315 0103 00 10 kΩ 1 4 W 52 R1517 315 0103 00 10 kΩ 1 4 W 52 R1519 315 0105 00 1 MΩ 1 4 W 52 R1520 315 0684 00 680 kΩ 1 4 W 52 R1522 321 0319 ...

Page 155: ...22 kΩ 1 4 W 52 R1558 315 0102 00 1 kΩ 1 4 W 52 R1559 311 1225 00 1 kΩ Var R1561 315 0223 00 22 kΩ 1 4 W 52 R1562 315 0154 00 150 kΩ 1 4 W 52 R1565 315 0473 00 47 kΩ 1 4 W 52 R1567 315 0223 00 22 kΩ 1 4 W 52 R1568 315 0223 00 22 kΩ 1 4 W 52 R1570 315 0471 00 470 Ω 1 4 W 52 R1572 315 0102 00 1 kΩ 1 4 W 52 R1573 315 0102 00 1 kΩ 1 4 W 52 R1576 315 0102 00 1 kΩ 1 4 W 52 R1578 315 0103 00 10 kΩ 1 4 W 5...

Page 156: ... 307 0103 00 2 7 Ω 1 4 W 52 R1639 315 0100 00 10 Ω 1 4 W 52 R1641 307 0106 00 4 7 Ω 1 4 W 52 R1650 315 0563 00 56 kΩ 1 4 W 52 R1651 315 0473 00 47 kΩ 1 4 W 52 R1663 315 0473 00 47 kΩ 1 4 W 52 R1669 315 0473 00 47 kΩ 1 4 W 52 R1678 315 0473 00 47 kΩ 1 4 W 52 R1687 315 0473 00 47 kΩ 1 4 W 52 R1693 315 0473 00 47 kΩ 1 4 W 52 R1701 315 0473 00 47 kΩ 1 4 W 52 R1702 315 0105 00 1 MΩ 1 4 W 52 R1708 315 0...

Page 157: ...Ω 1 4 W 57 R1775 315 0102 00 1 kΩ 1 4 W 57 R1778 315 0392 00 3 9 kΩ 1 4 W 57 R1780 315 0102 00 1 kΩ 1 4 W 57 R1783 315 0223 00 22 kΩ 1 4 W 57 R1785 321 0393 00 121 kΩ 1 8 W 17 R1786 315 0102 00 1 kΩ 1 4 W 57 R1787 315 0102 00 1 kΩ 1 4 W 57 R1789 315 0241 00 240 Ω 1 4 W 57 R1800 315 0102 00 1 kΩ 1 4 W 57 R1802 315 0102 00 1 kΩ 1 4 W 57 R1804 315 0223 00 22 kΩ 1 4 W 57 R1806 315 0103 00 10 kΩ 1 4 W ...

Page 158: ...3 00 22 kΩ 1 4 W 5Z R1870 315 0362 00 3 6 kΩ 1 4 W 52 R1872 315 0433 00 43 kΩ 1 4 W 5Z R1873 315 0390 00 39 Ω 1 4 W 52 R1874 315 0183 00 18 kΩ 1 4 W 52 R1875 315 0513 00 51 kΩ 1 4 W 52 R1878 323 0260 00 4 99 kΩ 1 2 W 12 R1880 315 0102 00 1 kΩ 1 4 W 52 R1881 315 0222 00 2 2 kΩ 1 4 W 52 R1882 315 0752 00 7 5 kΩ 1 4 W 52 R1884 311 1227 00 5 kΩ Var R1886 308 0679 00 0 51 Ω 2 W WW 52 R1888 321 0318 00 ...

Page 159: ...155 315 0512 00 5 1 kΩ 1 4 W 57 R2158 315 0152 00 1 5 kΩ 1 4 W 57 R2161 315 0102 00 1 kΩ 1 4 W 57 R2162 315 0751 00 750 Ω 1 4 W 5 R2163 315 0751 00 750 Ω 1 4 W 57 R2165 315 0102 00 1 kΩ 1 4 W 57 R2166 315 0751 00 750 Ω 1 4 W 57 R2167 315 0751 00 750 Ω 1 4 W 57 R2169 315 0102 00 1 kΩ 1 4 W 57 R2170 315 0751 00 750 Ω 1 4 W 57 R2171 315 0751 00 750 Ω 1 4 W 57 R2173 315 0102 00 1 kΩ 1 4 W 57 R2174 315...

Page 160: ...9 315 0751 00 750 Ω 1 4 W 52 R2220 321 0299 00 12 7 kΩ 1 8 W 12 R2221 321 0212 00 1 58 kΩ 1 8 W 12 R2226 315 0222 00 2 2 kΩ 1 4 W 52 R2227 321 0268 00 6 04 kΩ 1 8 W 12 R2229 321 0210 00 1 5 kΩ 1 8 W 12 R2231 315 0303 00 30 kΩ 1 4 W 52 R2235 315 0203 00 20 kΩ 1 4 W 52 R2236 315 0203 00 20 kΩ 1 4 W 52 R2237 315 0203 00 20 kΩ 1 4 W 52 R2238 315 0203 00 20 kΩ 1 4 W 52 R2241 321 0326 00 24 3 kΩ 1 8 W 1...

Page 161: ...15 0102 00 B010100 B069999 1 kΩ 1 4 W 5X R2297 315 0152 00 B070000 1 5 kΩ 1 4 W 5X R2298 315 0102 00 1 kΩ 1 4 W 5X R2299 315 0511 00 510 Ω 1 4 W 5X SWITCHES S102 S659 51000 51001 S1011 S1021 S15363 S16254 260 0984 00 260 0724 00 260 1379 00 260 1378 00 OFF Slide GATE SELECTOR Thermostatic open 83 3 C close 66 7 C Push POWER Push TRIG SOURCE Push VERT MODE MAX BEAM FINDER 51718 51719 S1728 S2110 26...

Page 162: ... Monolithic channel switch Monolithic channel switch Hybrid H 125 vert out amp Monolithic channel switch Five NPN transistor array CA3045 Quad 2 input positive nand gate SN7400N Quad 2 input positive and gate SN7408N Hex inverter SN7404N Quad 2 input positive nor gate SN74O2N Quad 2 input positive nand gate SN7400N Quad 2 lnput positive nand gate SN7400N Single 10 MHz l 3 bit binary ripple counter...

Page 163: ... 0055 00 VR1258 152 0282 00 VR1264 152 0149 00 VR1429 152 0195 00 VR1461 152 0289 00 VR2262 152 0405 00 VR2263 152 0405 00 VR2264 152 0405 00 CRT Zener 1N965B 0 4 W 15 V 52 Zener 1N965B 0 4 W 15 V 52 Zener 1N976B 0 4 W 43 V 52 Zener 1N938A 0 5 W 9 V 52 Zener 1N962B 0 4 W 11 V 52 Zener 1N972B 0 4 W 30 V 52 Zener 1N961B 0 4 W 10 V 52 Zener selected1 from 1N751A 5 1 V Zener 1N991B 0 4 W 180 V 52 Zene...

Page 164: ...ndicated in hexagon Connection soldered to circuit board Connection made to circuit board with interconnecting pin P O circuit board Blue tint encloses components located on circuit board The following prefix letters are used as reference designators to identify components or assemblies on the diagrams A Assembly separable or repairable circuit board etc LR Inductor resistor combination AT Attenua...

Page 165: ...7623 BLOCK DIAGRAM ...

Page 166: ...7623 R7623 Service Front of Board ...

Page 167: ......

Page 168: ...FL ...

Page 169: ......

Page 170: ...9 6C R125 7B C89 6C CR85 6C Q137 3C R60 5C R90 6C R126 7A C136 3C CR93 6D Q142 4A R62 5D R92 6C R130 2B Cl 37 3C CR 124 6B Q147 3C R63 5D R93 6C R132 3A C138 3B CR 125 7B Q150 1C R67 5C R95 6E R133 2A C146 3B CR 126 7A Q162 3C R74 5D R96 5E R134 3B C148 3B CR 130 2B Q167 4D R76 5D R98 7D R135 3B C149 4C CR 155 2C R77 5D R99 7D RI 36 3C C152 1C CR 160 2C R50 6A R78 5D R101 7D RI 37 3C C166 4C R51 6...

Page 171: ...NO LOC R142 3A R162 3C R143 3A R163 3D R144 3B R164 4C R145 3B R165 3C R146 3B R166 3C R147 4C R168 4C R148 3B R149 4B TP67 5B R150 1C TP96 2D R152 1C TP162 2C R154 1C R155 2C U55 5C R157 2C U99 6D R159 2D U123 4A R160 2C U156 2D R161 3C Logic A2 ...

Page 172: ...asurements on this diagram were made under the following conditions Set front panel controls knob type to mid range Set VERT MODE for CHOP Set TRIG SOURCE for VERT MODE Set for NON STORE condition No plug in units are installed Waveforms Waveforms shown on this diagram were obtained under the following conditions 7623 OSCILLOSCOPE UNDER TEST Front panel controls are set the same as for voltage mea...

Page 173: ...7623 Logic ...

Page 174: ... 4B R346 2C C329 2B R303 2A R324 4A R335 4B R348 1C C332 4A R305 3A R326 2B R336 4B R349 3C C342 5C R307 3C R327 1B R337 4B R350 1B C348 1C R308 3B R328 2B R 338 4B R352 3B R310 IB R329 2B R 339 4C CR341 3A R312 2A R301 2B R340 3B U324 3B CR 349 IB R314 1A R321 3B R341 4C R315 1A R323 3B R342 4C Q334 4B R317 2A R330 4B R344 3C Q336 4B R319 2A R332 4A Q344 3C ...

Page 175: ...Vertical Interface A4 ...

Page 176: ... C217 2B C220 IB C227 5B C260 4B CR238 3A Q236 5B Q238 5B Q242 3B Q252 3B R200 2A R202 IA R204 1C R206 2B R208 2A R209 1A R211 3A R212 2A R214 3C R215 2B R216 1C R218 3C R219 2C R222 2B R224 2B R 225 3A R 228 4A R226 4A R230 4A R232 5A R 234 4B R 236 3B R 238 4A R 240 3A R241 3B R246 3B R250 3B R 251 3B R259 4B R261 4B LI214 2B VR244 3B VR254 3B ...

Page 177: ...asurements on this diagram were made under the following conditions Set front panel controls knob type to mid range Set VERT MODE for CHOP Set TRIG SOURCE for VERT MODE Set for NON STORE condition No plug in units are installed Waveforms Waveforms shown on this diagram were obtained under the following conditions 7623 OSCILLOSCOPE UNDER TEST Front panel controls are set the same as for voltage mea...

Page 178: ...Vertical Interface ...

Page 179: ...R 468 4C C427 3C J431 4C R 409 2B R442 3B R473 6B C433 3D R411 2B R 443 3B R 474 6A C452 3A L425 3C R413 2C R444 3C R 477 6C C455 4B L474 5B R414 2C R446 3B R478 6D C456 4B L478 5C R415 2C R447 3B R 480 2B C458 4B L482 2B R416 2C R 448 3C R484 5C C465 4C R417 2C R450 5C R486 5C C466 4C Q407 1C R418 2C R452 4A R 488 5B C468 4C Q415 2C R420 3B R453 4A R 490 1B C486 5C Q496 2A R421 2B R 455 4 A R492 ...

Page 180: ...Vertical Amp A5 ...

Page 181: ...asurements on this diagram were made under the following conditions Set front panel controls knob type to mid range Set VERT MODE for CHOP Set TRIG SOURCE for VERT MODE Set for NON STORE condition No plug in units are installed Waveforms Waveforms shown on this diagram were obtained under the following conditions 7623 OSCILLOSCOPE UNDER TEST Front panel controls are set the same as for voltage mea...

Page 182: ...ROM DISPLAY LIMITED CURRENT _________ J y READOUT J 22 11 LR4B2 o 7 mH pi PLAY LIMIT COMMAND P45O 7623 Vertical Amplifier L474 0 6 Im H R40Ä 2 4 VERTICAL lOtNAk FROM DE LAV LIME DL 400 FMMI a B V l v R4ZO 270 L 4 fen 50 mV 500 M M _ note VERTICAL OUTPUT BOARD t U 4SO INTEGiRATW CIRCUIT ARE MOUNTED TO HEAT SINK ...

Page 183: ... 6B R585 6C C571 7C CR549 5B R508 2B R534 3B R563 5B R586 5C C574 2C R509 3B R535 3C R565 6B R587 4C C575 5C J503 1B R511 2B R536 3C R 566 4B R589 4C C586 5C J508 IB R512 2C R538 3B R 567 4B R593 5D C588 4C R513 2B R540 4B R569 4B R 595 2C C591 2C 0539 4B R514 2C R542 4B R570 6B R 597 3D C593 7C Q547 4C R515 2B R543 4B R571 6C R599 2D C595 2C 551 5B R517 3C R544 4C R573 6B C597 2C Q553 5C R519 3B ...

Page 184: ...Horizontal Amp A6 ...

Page 185: ...surements on this diagram were made under the following conditions Set front panel controls knob type to mid range Set VERT MODE for CHOP Set TRIG SOURCE for VERT MODE Set for NON STORE condition No plug in units are installed Waveforms Waveforms shown on this diagram were obtained under the following conditions 7623 OSCILLOSCOPE UNDER TEST Front panel controls are set the same as for voltage meas...

Page 186: ...7623 TO P450 VERT AMP 3 HORIZONTAL AMPLIFIER ...

Page 187: ... C643 2C Q666 4B R 651 4B C667 3C Q672 2B R652 4B C669 4C R 654 4B C679 4C R 602 4A R 655 48 C682 4B R 605 5A R657 4B R607 4A R 658 4B CR621 2A R610 3A R 660 3B CR622 2A R612 3A R662 4B CR635 1C R613 2A R663 4B CR641 2C R615 3B R667 3B CR 672 2A R617 4A R669 4C CR674 2B R619 3A R670 3B CR676 1B R622 2A R672 2B R 623 2B R673 2B J601 5A R625 1B R675 IB J603 3A R627 IA R677 1B R 630 3C R679 4C R633 2...

Page 188: ...Output Signals A7 ...

Page 189: ...asurements on this diagram were made under the following conditions Set front panel controls knob type to mid range Set VERT MODE for CHOP Set TRIG SOURCE for VERT MODE Set for NON STORE condition No plug in units are installed Waveforms Waveforms shown on this diagram were obtained under the following conditions 7623 OSCILLOSCOPE UNDER TEST Front panel controls are set the same as for voltage mea...

Page 190: ...FROM 7G23 Output Signals g ...

Page 191: ...A R1144 5B C1141 3A Q1136 2B R1119 2A R1146 4B C1144 5B Q1148 3B R1120 4A R1148 4B C1146 3B Q1152 4B R1121 2A R1149 3B C1148 3B Q1154 4B R1122 2A R1151 4B C1151 3B Q1156 4B R1124 3C R1152 3B C1158 5A R1126 2C R1155 3A C1184 6B R1101 IB R1128 2C R1157 4B C1187 6A R1103 1B R1129 1C R1158 4A C1193 6C R1105 1B R1131 2C R1159 4B C1196 6B R1106 1B R1132 3C R1181 5B R1108 2A R1184 6B CR1115 1B R1187 5A C...

Page 192: ...Fig 6 9 A9 High Voltage No 1 circuit board CKT NO GRID LOC C1226 3B C1228 2B CR1226 3B CR1228 3B R1227 3A R1228 2A R1229 2A R1230 2A R1231 1A ...

Page 193: ...234 3B C1268 3B CR1269 1B R1211 6B R1263 6B C1236 4C Cl 269 2B CR 1270 2B R1214 5A R1264 3B C1238 4B C1275 1B R1234 4D R1266 3B C1240 5B Cl 276 1C L1222 4B R1241 6C R1271 2B C1241 6C R1243 6B R1274 IB Cl 247 5D CR 1232 3D Q1201 7A R1245 5D R1275 1B Cl 250 2B CR1236 3C Q1206 6A R1247 6D C1254 2A CR 1238 4C Q1214 5A R1248 5C T1225 2D C1255 3B CR 1244 6B R1250 7C Cl 257 4B CR1253 2B R1202 6B R1252 2B...

Page 194: ...asurements on this diagram were made under the following conditions Set front panel controls knob type to mid range Set VERT MODE for CHOP Set TRIG SOURCE for VERT MODE Set for NON STORE condition No plug in units are installed Waveforms Waveforms shown on this diagram were obtained under the following conditions 7623 OSCILLOSCOPE UNDER TEST Front panel controls are set the same as for voltage mea...

Page 195: ...FROM LV POWER SUPPLY 7623 CRT CIRCUIT ...

Page 196: ...T GRI NO LOC NO LOC NO LOC C806 4D CR821 3C R826 4B C808 2B R827 4B C810 5B F814 5C R830 4B C811 4D R831 4B C813 5B R805 3C R833 4B C814 5C R806 3D R837 4A C820 2B R811 4D R838 4A C821 3D R814 5B R821 3C Q827 4B CR808 2C R822 3B Q829 4A CR811 6A R823 3B Q835 4A CR820 3B R824 3B ...

Page 197: ......

Page 198: ...43 4B Q952 3B Q956 3B Q964 3A Q985 1B Q988 2B R853 5C R855 5D R856 4C R858 4D R859 5D R860 4D R862 4C R864 4C R866 4D R867 3C R870 3C R872 3C R875 4C R876 3C R877 3D R878 3D R879 3D R880 6B R881 5A R882 6B R883 IB R886 5B R889 4B R890 48 R891 4B R892 4B R894 5A R896 4B R898 5B R901 5B R903 5B R904 5B R906 5C R907 5C R910 4B R911 4C R912 4B R915 1B R916 1C R918 1D R921 1C R922 1C R923 1C R924 1C R9...

Page 199: ...alent Voltage Measurements Voltage measurements on this diagram were made under the following conditions Set knob type front panel controls except READ OUT to mid range Turn READOUT to off Set VERT MODE for CHOP Set for NON STORE condition Set TRIG SOURCE for VERT MODE No plug ins are installed Waveforms Waveforms shown on this diagram were obtained under the following conditions 7623 OSCILLOSCOPE...

Page 200: ......

Page 201: ...CR1522 4C Q1460 6C R1457 BC R1523 4C R1619 2A C1594 4A CR1523 4C Q1474 3C R1362 2C R1459 6D R1524 4C R1867 6B C1600 3B CR1528 5C Q1475 4C R1365 3C R1463 6C R1525 4C R1869 6B C1871 6B CR 1597 5B Q1488 3C R1366 3C R1471 4C R1526 5B R1870 6B CR1599 6B Q1489 3C R1367 3C R1472 3C R1529 5C R1872 6B CR 1377 IB Q1510 5C R1370 2C R1477 3B R1590 4B R1874 6B CR 1379 2B Q1364 2C Q1511 5C R1375 2C R1485 3C R15...

Page 202: ...Storage Output A14 ...

Page 203: ...ge Measurements Voltage measurements on this diagram were made under the following conditions Set front panel controls knob type to mid range Set VERT MODE for CHOP Set TRIG SOURCE for VERT MODE Set for NON STORE condition No plug in units are installed Waveforms Waveforms shown on this diagram were obtained under the following conditions 7623 OSCILLOSCOPE UNDER TEST Front panel controls are set t...

Page 204: ......

Page 205: ...7623 R7623 Service Fig 6 14 A15 Cal Storage circuit board ...

Page 206: ...R1681 8A R1840 3D C1830 ID CR1675 30 Q1347 7C R1321 8F R1498 4E R1S87 1C R1842 6B C1877 2E CR1679 2C Q1357 7C R1323 7D R1499 4E R1S93 1C R1844 6B CR1681 2C QI 399 6E R1325 8C R1515 3F R1701 3D R1847 6B CR1303 7D CR1685 3C Q1404 7E R1328 7D R1516 4E R1708 1C R1848 7B CR1304 6D CR1689 3C Q1412 6E R1327 7D R1517 4F R1731 3C R1849 9C CR1315 8E CR1691 3C Q1438 2E R1329 7D R1531 6F R1732 1A R1878 3F CR1...

Page 207: ...ge Measurements Waveforms Voltage measurements on this diagram were made under the following conditions Waveforms shown on this diagram were obtained under the following conditions 7623 OSCILLOSCOPE UNDER TEST Front panel Set front panel controls knob type to mid range controls are set the same as for voltage measurements A 7A15AN Vertical plug in unit and a 7B53AN Time Base unit are installed in ...

Page 208: ......

Page 209: ...7623 R7623 Service Fig 6 15 A16 Readout System circuit board ...

Page 210: ... J2299 4E R2137 6C R2199 5E R2268 6B U2232 6A C2242 7A R2139 7B R2201 5F R2273 IB U2244 2A C2244 2B L2283 4C R2144 6C R2202 5F R2274 2B U2250 2E C2255 6A R2146 5C R2203 5G R2275 2B U2260 5A Q2108 3C R2148 6C R2204 5G R2276 5B U2270 2A CR2124 6D Q2112 3B R2150 3E R2206 5G R2277 5B U2272 3A CR2125 5D Q2138 6C R2151 3E R2207 5G R2279 3C U2274 4A CR2127 5D Q2153 3E R2153 3E R2208 5G R2280 4C U2275 4A ...

Page 211: ...E F Fig 6 16 A18 Mode Switch circuit board CKT GRID CKT GRID NO LOC NO LOC CR 1021 3B CR 1023 3C CR1024 2C CR1026 3B CR 1028 2A Q1722 3A Q1724 2A R1018 4E R1019 4C R1022 3B R1720 2A R1721 3A R1723 4A S1011 2C S1718 2E ...

Page 212: ...ltimeter Input impedance Range 10 MΩ 0 500 V Tektronix 7D13 Digital Multimeter test oscilloscope must have readout system or Fairchild Model 7050 or equivalent Voltage Measurements Voltage measurements on this diagram were made under the following conditions Set front panel controls knob type to mid range Set VERT MODE for CHOP Set TRIG SOURCE for VERT MODE Set for NON STORE condition No plug in u...

Page 213: ......

Page 214: ... steel OD outside diameter w wide or width FIGURE 1 7623 FRONT FRAME Fig Q Index Tektronix Serial Model No f Description No Part No Ett Disc y 1 2 3 4 5 1 1 426 0514 00 1 FRAME mask 2 378 0625 08 1 FILTER light CRT 3 331 0258 03 1 MASK graticule 4 200 0939 01 1 BEZEL CRT ATTACHING PARTS 5 212 0023 00 4 SCREW 8 32 x 0 375 inch PHS 6 337 1159 00 1 SHIELD implosion 7 331 0245 00 1 MASK CRT 8 333 1691...

Page 215: ...AR PERSIST 35 366 1402 12 1 PUSHBUTTON FAST 36 366 1402 13 1 PUSHBUTTON BI STABLE 37 366 1402 21 1 PUSHBUTTON SAVE 38 366 1402 76 1 PUSHBUTTON AUTO 39 366 1402 14 1 PUSHBUTTON MAN 40 426 0681 00 18 FRAME pushbutton 41 366 1480 01 1 PUSHBUTTON ON 42 4 RESISTOR variable ATTACHING PARTS FOR EACH 43 210 0583 00 1 NUT hex 0 25 32 x 0 312 inch 210 0940 00 1 WASHER flat 0 25 ID x 0 375 inch OD 44 210 004...

Page 216: ...62 00 2 SCREW 2 56 x 0 312 inch PHS ATTACHING PARTS 70 211 0105 00 2 SCREW 4 40 x 0 188 inch 100 deg csk FHS _ _ 71 386 2119 00 1 SUBPANEL front ATTACHING PARTS 72 211 0538 00 4 SCREW 6 32 x 0 375 inch 100 deg csk FHS 211 0589 00 2 SCREW 6 32 x 0 312 inch PHB 73 352 0084 02 XB040000 1 BUSHING TRACE ROTATION 390 0345 00 B010100 B039999 2 CABINET SIDE 74 390 0345 00 B040000 1 CABINET SIDE left 75 39...

Page 217: ...PARTS FOR EACH SCREW 6 32 x 0 75 inch Fil HS INSERT foot plastic GUIDE slide ATTACHING PARTS FOR EACH SCREW thread forming 4 24 x 0 25 inch PHS SHAFT extension CONTACT electrical plug in ground ATTACHING PARTS FOR EACH SCREW 4 40 x 0 25 inch PHS NUT keps 4 40 x 0 25 inch CONTACT electrical plug in ground upper ATTACHING PARTS FOR EACH SCREW 4 40 x 0 25 inch PHS NUT keps 4 40 x 0 25 inch SHIELDING ...

Page 218: ...x 0 312 inch 100 deg csk FHS WASHER cable clamp NUT keps 6 32 x 0 312 inch CIRCUIT BOARD ASSY LOGIC See A2 Electrical List circuit board assembly includes LINK terminal connecting SOCKET pin connector SOCKET transistor 6 pin SOCKET integrated circuit 16 pin SOCKET integrated circuit 14 pin SOCKET pin terminal TERMINAL test point CIRCUIT BOARD ASSY INTERFACE See Al Electrical List circuit board ass...

Page 219: ...tic 158 131 0726 00 B010100 B059999 36 CONTACT straight 131 0726 00 B060000 33 CONTACT straight 159 131 0727 00 B010100 B059999 36 CONTACT offset 131 0727 00 B060000 33 CONTACT offset 131 0899 00 4 CONTACT short tail 160 204 0365 00 1 BODY plastic ATTACHING PARTS FOR EACH 161 213 0232 00 2 SCREW thread forming 2 56 x 0 312 inch PHS ATTACHING PARTS 162 213 0034 00 9 SCREW thread forming 4 40 x 0 31...

Page 220: ... 211 0504 00 1 SCREW 6 32 x 0 25 inch PHS 186 210 0407 00 1 NUT hex 6 32 x 0 25 inch _ _ _ _ 187 175 0825 00 in WIRE electrical 2 wire ribbon 15 50 inch long 188 175 0826 00 in WIRE electrical 3 wire ribbon 39 inches long 189 175 0827 00 in WIRE electrical 4 wire ribbon 24 50 inches long 190 175 0828 00 in WIRE electrical 5 wire ribbon 22 50 inches long 191 175 0832 00 in WIRE electrical 9 wire ri...

Page 221: ... 131 0608 00 21 TERMINAL pin 0 365 inch long 15 131 1003 00 2 CONNECTOR receptacle coaxial 16 136 0252 04 25 SOCKET pin connector 17 136 0252 01 1 SOCKET integrated circuit 16 pin 18 129 0075 00 XB020000 1 INSULATOR standoff 19 361 0007 00 XB020000 1 SPACER plastic ATTACHING PARTS 20 211 0008 00 2 1 SCREW 4 40 x 0 25 inch PHS COIL y axis ATTACHING PARTS 21 213 0138 00 2 SCREW thread forming 4 24 x...

Page 222: ... BRD ASSY CAL STORAGE SEE Al5 Electrical Parts List circuit board assembly includes TERMINAL pin 0 885 inch long TERMINAL pin 0 365 inch long SOCKET pin connector TERMINAL test point ATTACHING PARTS SCREW 4 40 x 0 25 inch PHS CIRCUIT BRD ASSY STORAGE See A14 Electrical Parts List circuit board assembly includes TERMINAL pin 0 46 inch long SOCKET pin connector SOCKET pin terminal GUIDE POST lock CH...

Page 223: ...CHING PARTS FOR EACH 77 213 0149 00 2 SCREW thread forming 6 20 x 0 375 inch PHS 78 386 0978 00 1 PLATE mica 1 17 x 1 70 inches 79 136 0280 00 2 SOCKET transistor ATTACHING PARTS FOR EACH 80 211 0101 00 2 SCREW 4 40 x 0 25 inch 100 deg csk FHS 81 210 0586 00 2 NUT keps 4 40 x 0 25 inch 82 255 0334 00 B010100 B040274 ft PLASTIC CHANNEL 3 50 inches 348 0012 00 B040275 1 GROMMET rubber 0 625 inch dia...

Page 224: ... 0 50 inch PHS 110 343 0004 00 1 CLAMP cable plastic 0 312 inch diameter 111 211 0510 00 1 SCREW 6 32 x 0 375 inch PHS 112 210 0863 00 1 WASHER cable clamp 211 0008 00 XB060000 1 SCREW 4 40 x 0 25 inch PHS 113 1 TRANSFORMER ATTACHING PARTS 114 212 0522 00 210 0812 00 2 2 SCREW 10 32 x 2 50 inches HHS WASHER fiber 0 188 ID x 0 375 inch OD 115 166 0457 00 2 TUBE insulating 1 875 inches long 116 212 ...

Page 225: ...or 136 0252 01 2 SOCKET pin connector 138 260 0984 00 1 SWITCH slide 139 214 0579 00 1 TERMINAL test point ATTACHING PARTS 140 211 0008 00 2 SCREW 4 40 x 0 25 inch PHS 141 386 2199 00 1 PANEL rear ATTACHING PARTS 142 211 0529 00 4 SCREW 6 32 x 1 125 inches PHS 143 348 0191 00 4 FOOT cabinet 144 147 0008 00 1 MOTOR AC ATTACHING PARTS 145 212 0577 00 2 SCREW 10 32 x 0 50 inch RHS 146 337 1756 00 1 S...

Page 226: ...erminal connector 2 wire white 170 352 0161 00 4 HOLDER terminal connector 3 wire black 352 0161 02 3 HOLDER terminal connector 3 wire red 352 0161 07 2 HOLDER terminal connector 3 wire violet 352 0161 09 2 HOLDER terminal connector 3 wire white 171 352 0162 01 4 HOLDER terminal connector 4 wire brown 352 0162 04 1 HOLDER terminal connector 4 wire yellow 352 0162 05 4 HOLDER terminal connector 4 w...

Page 227: ...7 175 0833 00 in 188 200 1075 00 4 189 131 0861 00 4 HOLDER terminal connector 10 wire CONNECTOR terminal CONNECTOR terminal EYELET EYELET WIRE WIRE WIRE WIRE WIRE WIRE I WIRE WIRE COVER CONNECTOR quick disconnect 0 126 OD x 0 23 inch long 0 152 x 0 245 inch long 2 3 4 5 6 7 8 f electrical electrical electrical electrical electrical electrical electrical electrical terminal plastic wire wire wire ...

Page 228: ...ght CRT MASK graticule BEZEL CRT ATTACHING PARTS SCREW 8 32 x 0 375 inch PHS SHIELD implosion MASK CRT PANEL SUPPORT CRT front support includes SUPPORT CRT front ATTACHING PARTS SCREW 8 32 x 0 375 inch 100 deg csk FHS SCREW 6 32 x 0 375 icnh PHS BODY terminal TERMINAL feedthru GROMMET plastic 0 156 inch OD CIRCUIT BOARD ASSY GRATICULE LIGHT See A13 Electrical Parts List circuit board assembly incl...

Page 229: ...N MAN FRAME pushbutton PUSHBUTTON ON RESISTOR variable ATTACHING PARTS FOR EACH NUT hex 0 25 32 x 0 312 inch WASHER flat 0 25 ID x 0 375 inch OD WASHER lock internal 0 261 ID x 0 40 inch OD BUSHING sleeve PANEL front CIRCUIT BOARD ASSY MODE See A18 Electrical Parts List circuit board assembly includes TERMINAL pin 0 365 inch long SOCKET pin connector SWITCH push VERT MODE SWITCH push TRIGGER SOURC...

Page 230: ...able clamp 79 210 0457 00 1 NUT keps 6 32 x 0 312 inch 644 0437 01 1 POWER SWITCH ASSEMBLY power switch assembly includes 80 337 1760 00 1 SHIELD switch 81 211 0020 00 2 SCREW 4 40 x 1 125 inch PHS 82 220 0665 00 2 NUT self locking 4 40 x 0 25 inch 83 260 1368 01 2 SWITCH 84 214 1226 01 1 SPRING helical compression 85 214 1689 00 1 ACTUATOR switch 86 200 1318 00 1 COVER switch ATTACHING PARTS 87 2...

Page 231: ...ist circuit board assembly includes 105 131 0608 00 45 TERMINAL pin 0 365 inch long 106 131 0847 00 12 TERMINAL post 0 435 inch long 107 136 0183 00 3 SOCKET transistor 3 pin 108 136 0235 00 6 SOCKET transistor 6 pin 109 136 0252 04 136 0384 00 36 12 SOCKET pin connector SOCKET pin connector 110 136 0269 00 1 SOCKET integrated circuit 14 pin 111 136 0361 00 6 SOCKET transistor 112 214 1291 00 3 HE...

Page 232: ...5 0825 00 in WIRE electrical 2 wire ribbon 15 50 inches long 139 175 0826 00 in WIRE electrical 3 wire ribbon 39 inches long 140 175 0827 00 in WIRE electrical 4 wire ribbon 24 50 inches long 141 175 0828 00 in WIRE electrical 5 wire ribbon 22 50 inches long 142 175 0832 00 in WIRE electrical 9 wire ribbon 9 50 inches long 143 352 0171 00 6 HOLDER terminal connector 1 wire black 144 352 0169 00 1 ...

Page 233: ...ectrical Parts List circuit board assembly includes 15 131 0608 00 21 TERMINAL pin 0 365 inch long 16 131 1003 00 2 CONNECTOR receptacle coaxial 17 136 0252 04 136 0252 01 25 2 SOCKET pin connector SOCKET pin connector 18 136 0260 01 1 SOCKET integrated circuit 16 pin 19 129 0075 00 XB020000 1 INSULATOR standoff 20 361 0007 00 XB020000 1 SPACER plastic ATTACHING PARTS 21 211 0008 00 2 SCREW 4 40 x...

Page 234: ...TERMINAL pin 0 365 inch long SOCKET pin connector TERMINAL test point ATTACHING PARTS SCREW 4 40 x 0 25 inch PHS CIRCUIT BRD ASSY STORAGE See A14 Electrical Parts List circuit board assembly includes TERMINAL pin 0 46 inch long SOCKET pin connector SOCKET pin terminal GUIDE POST lock CHASSIS ATTACHING PARTS SCREW 4 40 x 0 25 inch PHS GUIDE ATTACHING PARTS SCREW 4 40 x 0 25 inch 100 deg csk FHS HIG...

Page 235: ...01 1 SOCKET pin connector ATTACHING PARTS 71 211 0008 00 3 SCREW 4 40 x 0 25 inch PHS _ _ _ 72 348 0063 00 1 GROMMET plastic 0 50 inch diameter 73 2 TRANSISTOR ATTACHING PARTS FOR EACH 74 213 0146 00 2 SCREW thread forming 6 20 x 0 312 inch PHS 75 386 0978 00 1 PLATE mica 1 17 x 1 70 inches _ 76 136 0280 00 2 SOCKET transistor ATTACHING PARTS FOR EACH 211 0101 00 2 SCREW 4 40 x 0 25 inch 100 deg c...

Page 236: ...tor ATTACHING PARTS 98 211 0012 00 1 SCREW 4 40 x 0 375 inch PHS 99 210 0586 00 1 NUT keps 4 40 x 0 25 inch 100 210 0935 00 1 WASHER fiber 0 14 ID x 0 375 inch OD 101 344 0154 00 4 CLIP electrical fuse ATTACHING PARTS 102 211 0507 00 2 SCREW 6 32 x 0 312 inch PHS 103 210 0202 00 1 TERMINAL lug solder SE 6 104 211 0511 00 1 SCREW 6 32 x 0 50 inch PHS 105 343 0004 00 1 CLAMP cable plastic 0 312 inch...

Page 237: ... inch long 127 210 0202 00 1 TERMINAL lug SE 6 ATTACHING PARTS 128 211 0504 00 1 SCREW 6 32 x 0 25 inch PHS 129 210 0407 00 1 NUT hex 6 32 x 0 25 inch 130 1 CIRCUIT BOARD ASSY SIGNAL OUT See A7 Electrical Parts List circuit board assembly includes 131 131 0608 00 11 TERMINAL pin 0 365 inch long 132 131 1003 00 2 CONNECTOR receptacle coaxial 133 136 0252 04 27 SOCKET pin connector 136 0252 01 2 SOC...

Page 238: ...CH SCREW 4 40 x 0 25 inch PHS NUT keps 4 40 x 0 25 inch CONTACT plug in ground upper ATTACHING PARTS FOR EACH SCREW 4 40 x 0 25 inch PHS NUT keps 4 40 x 0 25 inch CONTACT plug in ground ATTACHING PARTS FOR EACH SCREW 4 40 x 0 25 inch PHS NUT keps 4 40 x 0 25 inch CIRCUIT BOARD ASSY LOGIC See A2 Electrical Parts List circuit board assembly includes LINK terminal connecting SOCKET transistor 6 pin S...

Page 239: ... CONTACT straight 131 0726 00 B060000 35 CONTACT straight 174 131 0727 00 B010100 B059999 38 CONTACT offset 131 0727 00 B060000 35 CONTACT offset 175 200 0950 00 2 COVER plastic 176 204 0365 00 1 BODY plastic ATTACHING PARTS 177 213 0232 00 2 SCREW thread forming 2 56 x 0 312 inch PHS 210 0906 00 1 WASHER fiber 0 125 ID x 0 203 inch OD _ _ 178 131 0804 00 1 LINK terminal connecting 1 17 inches lon...

Page 240: ...terminal connector 3 wire gray 200 352 0162 01 4 HOLDER terminal connector 4 wire brown 352 0162 05 1 HOLDER terminal connector 4 wire green 352 0162 09 1 HOLDER terminal connector 4 wire white 201 352 0163 00 1 HOLDER terminal connector 5 wire black 352 0163 01 2 HOLDER terminal connector 5 wire brown 352 0163 06 2 HOLDER terminal connector 5 wire blue 352 0163 08 2 HOLDER terminal connector 5 wi...

Page 241: ...electrical 4 wire ribbon 21 inches long in WIRE electrical 5 wire ribbon 41 inches long in WIRE electrical 6 wire ribbon 15 inches long in WIRE electrical 7 wire ribbon 7 inches long in WIRE electrical 8 wire ribbon 98 inches long in WIRE electrical 10 wire ribbon 67 inches long 1 WIRIING HARNESS vertical signal wiring harness includes 3 CONNECTOR terminal 1 CONNECTOR terminal 1 HOLDER terminal co...

Page 242: ...7623 R7623 OSCILLOSCOPE b ...

Page 243: ...151 ...

Page 244: ... Fig Index No Tektronix Part No Serial Model No Eff Disc Q t y 1 2 3 4 5 Description 8 065 0154 00 1 CARTON ASSEMBLY carton assembly includes 1 004 0281 00 2 FRAME 2 004 1092 00 1 PAD SET 5 piece 3 004 0766 00 1 CARTON ...

Page 245: ...1 2 3 4 5 Description Eff Disc 8 065 0181 00 1 CARTON ASSEMBLY carton assembly includes 4 004 0462 00 1 CARTON accessory 5 004 1160 00 1 PAD SET 6 004 0853 00 1 CARTON inner 7 004 1210 00 1 PAD SET 8 004 0276 00 2 FRAME 9 004 0852 00 1 CARTON outer 7623 R7623 OSCILLOSCOPE ...

Page 246: ...20 ...

Page 247: ...7623 R7623 OSCILLOSCOPE 112 ...

Page 248: ...178 00 1 CABLE special purpose RF 2 378 0625 02 1 FILTER light CRT gray 3 016 0131 00 1 HARDWARE KIT R7623 ONLY 4 351 0314 00 1 SLIDE GUIDE 19 25 inches long R7623 ONLY 070 1366 00 1 MANUAL instruction operators not shown 070 1465 00 1 MANUAL instruction service not shown 7623 R7623 OSCILLOSCOPE ...

Page 249: ... 0 12 inch diameter SE each cabinet side includes 6 211 0008 00 4 SCREW 4 40 X 0 25 inch PHS 12 214 0816 00 6 LATCH ASSEMBLY 7 385 0149 00 2 POST 0 25 OD X 0 625 inch long 13 348 0274 00 4 SHIELDING GASKET electronic 48 inches long 8 161 0033 09 1 CABLE ASSEMBLY power 14 390 0355 00 1 CABINET BOTTOM 9 358 0323 00 1 BUSHING strain relief cabinet bottom includes 10 386 2329 00 1 PANEL rear 15 214 08...

Page 250: ...mmediately into printed manuals Hence your manual may contain new change information on following pages A single change may affect several sections Sections of the manual are often printed at different times so some of the information on the change pages may already be in your manual Since the change information sheets are carried in the manual until ALL changes are permanently entered some duplic...

Page 251: ...h division For SN below B080000 adjust C568 and C588 for one marker each division while maintaining approximately equal capaci tances Use low capacitance adjustment tool for all adjust ments in this step k Set the 7B53A for a sweep rate of 0 05 microsecond division with X10 magnifier on l ADJUST For SN B080000 up C566 and 0586 for one marker each two divisions while maintaining approximately equal...

Page 252: ...ADD TO Operating Instructions Plug In Installation NOTE Later Production of Rackmount Oscilloscopes are provided with support posts between the individual plug in com partments A post or posts must be removed if a multi width Plug In is to be installed To remove a post unfasten the screws that secure it at the top and bottom of the plug in housing M20 089 873 ...

Page 253: ... R EFF SN B100000 up 7613 R EFF SN B090000 up 7603 R EFF SN B090000 up ELECTRICAL PARTS LIST AND SCHEMATIC CHANGE ADD C943 283 0078 00 0 001 µF Cer 500 V 20 C943 is added between the base of Q943A and ground located on the L V Power Supply schematic M20 185 1073 ...

Page 254: ...F SN B070000 up 7613 R EFF SN B080000 up 7623 R EFF SN B090000 up ELECTRICAL PARTS LIST AND SCHEMATIC CORRECTION ADD C827 283 0077 00 330 pF Cer 500 V 5 Add C827 between the collector and base of Q827 located on the Low Voltage Power Supply diagram M20 382 573 ...

Page 255: ... R EFF 7613 R EFF 7623 R EFF SN B080000 UP SN B090000 up SN B100000 up ELECTRICAL PARTS LIST AND SCHEMATIC CORRECTIONS CHANGE TO R1195 R1196 315 0362 00 315 0362 00 3 6 kΩ 1 4 W 5 3 6 kΩ 1 4 W 5 M20 418 673 ...

Page 256: ...F SN B070000 up 7623 R7623 EFF SN B080000 up ADD C876 C936 283 0328 00 283 0178 00 0 03 µF Cer 200 V 0 1 µF Cer 100 V Add C876 between the base and emitter of Q876A Add C936 between the base and emitter of Q936A Both capacitors are located on diagram 9 in the 7603 R7603 7613 and diagram 8 in the 7403N R7403N and 7623 M20 507 473 Rev 1273 ...

Page 257: ...7 321 0151 00 365 Ω 1 8 W 1 R938 321 0330 00 26 7 kΩ 1 8 W 1 R939 321 0409 00 178 kΩ 1 8 W 1 These resistors are located on the L V Power Supply schematic in the Diagrams section and the LOW VOLTAGE REGULATOR Circuit Board assembly Replacement part number for this board is 670 1376 06 for R7403N 670 1376 09 for 7313 R7313 and 670 1376 10 for the rest of the instruments listed 1121 717 174 ...

Page 258: ...EFF SN B100000 up ELECTRICAL PARTS LIST AND SCHEMATIC CORRECTION CHANGE TO Q1216 151 0140 01 Silicon NPN selected from 2N3O55 Q1218 151 0140 01 Silicon NPN selected from 2N3O55 REMOVE R1210 315 0562 00 5 6 kΩ 1 4 W 57 M2O 797 973 Rev ...

Page 259: ...tion at the back for all other information concerning your instrument ELECTRICAL PARTS LIST B1001 119 0396 00 FAN Axial 50 400 Hz 115 V C1002 285 0562 00 0 47 µF Cer 400 V MECHANICAL PARTS LIST 441 1201 00 1 CHASSIS oscilloscope 378 0050 00 1 BAFFLE air 211 0530 00 4 SCREW 6 32 x 1 750 344 0116 00 1 CLIP capacitor mounting 131 0761 00 3 TERMINAL POST screw mounting 211 0504 00 3 SCREW 6 32 x 250 2...

Page 260: ... graticule center line without readout or 0 5 division with readout 23 Step 36 fourth line of step 36a to read division Place the GATE selector switch in the MAIN all of steps 36c 36d and NOTE Displays in AUXILIARY and DELAY are dependent on and in some cases won t be present with individual time base plug in 27 Step 42 TABLES 2 3 2 4 and Fig 2 10 Step 42d and 42e to read d Press the NON STORE but...

Page 261: ...le 2 9 see Fig 2 10 set the deflection factor as required and check for voltages within tolerances listed in Table 2 9 Page 2 29 Tables 2 6 2 7 CHANGE portions of these tables as underlined below TABLE 2 6 FAST MODE BISTABLE VOLTAGE LEVELS TABLE 2 7 FAST MODE PREP VOLTAGE LEVELS CE3 adjustable 50 V to 80 V CE adjustable 30 V to 50 V Page 2 30 Table 2 8 CHANGE the table heading as follows TABLE 2 8...

Page 262: ...o approxi mately 74 V Page 3 19 Fig 3 16 REPLACE Q225 and Q236 labels with Q236A and Q236B Page 3 24 Fig 3 21 CHANGE CRT anode voltage from 12 kV to 7 kV CHANGE CRT cathode voltage from 2 96 kV to 1 475 kV ELECTRICAL PARTS LIST CORRECTIONS ADD CR1663 152 0141 02 Silicon 1N4152 CHANGE L425 value to read nanohenry ADD R1634 315 0221 00 220 Ω 1 4 W 5 CHANGE U1822 circuit number to U1882 board is mark...

Page 263: ... for correct values or removal of the following R1195 R1196 R1126 R1210 CHANGE Terminal numbering for P1170 top to bottom to read as follows 7 6 5 4 3 2 1 8 one is the index Fig 6 11 Back of Diagram 7 C827 is located below R833 for some serial numbers see insert for M20 382 In later production C827 R806 R808 R809 R811 R814 R821 R822 C811 C813 and C821 are relocated on the board electrical connecti...

Page 264: ...o ground per M20 185 SN B100000 ADD C827 330 from collector to base of Q827 per M20 382 SN B090000 Fig 6 13 Back of Diagram 8 CHANGE C1594 label to R1591 label to R1590 label to R1594 label to ADD R1590 label to R1596 label to R1595 label to Diagram 9 CHANGE C1384 va lue to R1370 value to R1393 va lue to R1360 value to R1596 value to C1591 R1593 R1594 R1591 resistor above Q1591 resistor below R159...

Page 265: ...1633 C1633 junction and label the other end to P1417 1 top of R1543 and top of R1417 Relabel source for both P1417 1 terminals to read to R1634 not 15 V INTERCHANGE Q1591 and Q1595 circuit numbers Q1591 base connects to R1593 R1594 INTERCHANGE All of the following circuit numbers CR1471 with CR1484 R1471 with R1486 R1472 with R1485 Q1474 with Q1488 R1477 with R1490 CR1475 with CR1489 Q1475 with Q1...

Page 266: ... down position CHANGE P1730 pin 2 lead to connect to P1728 pin 1 and P173O pin 1 lead to connect to P1728 pin 2 R1760 value to 1 2 K R1789 value to 240 Ω C1765 value to 01 R1810 value to 5 6 K SN B030000 up R1814 value to 5 6 K SN B030000 up R1822 value to 14 3 K R1840 value to 2 2 K R1842 value to 22 K R1844 value to 22K U1822 circuit number to U1882 Board is marked U1882 REMOVE R1820 and replace...

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