Tektronix 2215 Instruction Manual
  1. Manuals
  2. Brands
  3. Tektronix Manuals
  4. Test Equipment
  5. 2215
  6. Instruction manual
Tektronix 2215 Instruction Manual

Tektronix 2215 Instruction Manual

Hide thumbs Also See for 2215:
Table of Contents

Advertisement

Quick Links

Download this manual
THE FOLLOWING SERVICING INSTRUCTIONS
ARE FOR USE BY QUALIFIED PERSONNEL
ONLY. TO AVOID PERSONAL INJURY, DO NOT
PERFORM ANY SERVICING UNLESS YOU ARE
QUALIFIED TO DO SO.
Tektronix, Inc.
P.O. Box 500
Beaverton, Oregon
97077
070-3826-00
Product Group 46
Tektronix
WARNING
PLEASE CHECK FOR CHANGE INFORMATION
AT THE REAR OF THIS MANUAL.
OSCILLOSCOPE
INSTRUCTION MANUAL
COMMITTED TO EXCELLENCE
2215
SERVICE
Serial Number
First Printing JUL 1981
Revised AUG 1982

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the 2215 and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Tektronix 2215

Summary of Contents for Tektronix 2215

  • Page 1 ARE FOR USE BY QUALIFIED PERSONNEL ONLY. TO AVOID PERSONAL INJURY, DO NOT PERFORM ANY SERVICING UNLESS YOU ARE QUALIFIED TO DO SO. PLEASE CHECK FOR CHANGE INFORMATION AT THE REAR OF THIS MANUAL. 2215 OSCILLOSCOPE SERVICE INSTRUCTION MANUAL Tektronix, Inc. P.O. Box 500...
  • Page 2 Copyright © 1981 Tektronix, Inc. All rights reserved. Contents of this publication may not be reproduced in any form without the written permission of Tektronix, Inc. Products of Tektronix, Inc. and its subsidiaries are covered by U.S. and foreign patents and/or pending patents. TEKTRONIX, TEK, SCOPE-MOBILE, and registered trademarks of Tektronix, Inc.

  • Page 3: Table Of Contents

    SECTION 2 OPERATING INSTRUCTIONS PREPARATION FOR U S E ......2-1 S A F E T Y ..........2-1 LIN E V O L T A G E .........2-1 POWER C O R D ........2-1 LIN E F U S E ........... 2-1 CONTROLS, CONNECTORS, A ND IN D IC A T O R S ........
  • Page 4 /\ i / i u r\i i i[-J i ............u iiiu i V E R T IC A L PREAMPS......3-6 Channel 1 V ertical Pream plifier . . 3-6 Channel 2 Vertical Preamplifier . . 3-7 Internal Trigger P ickoff A m p lifie r..........3-7 C H A N N E L SWITCH AND V E R T IC A L O U T P U T ......3-7...
  • Page 5 D IS P L A Y ......Z-Axis A m p lifie r......... 3-22 V E R T IC A L ......H O R IZ O N T A L ......... 3-23 H O R IZ O N T A L ....Sweep S w itc h in g .........
  • Page 6 5-13 5-18 5-21 . 6-4 . 6-4 . 6-4 . 6-5 . 6-5 . 6-5 6-10 6-10 6-10 . 6-10 . 6-10 . 6-10...
  • Page 7 Front-Panel C ircuit B o a rd ....6-16 U.S. SALES & SERVICE OFFICES Main C ircu it B o a r d ......6-17 Current L im it C ircuit Board ..6-18 CHANGE INFORMATION REPACKAGING FOR SHIPM EN T. . 6-19...
  • Page 8 Basic block diagram o f the 2215 Oscilloscope..............Detailed block diagram o f the Channel 1 attenuator and attenuator switching tables Diode gate biasing fo r a Channel 1 d is p la y ................. CHOP V E R T IC A L MODE w a ve fo rm s.................
  • Page 9 3-cS . 3-5 . 3-8 . 3-11 . 3-16 . 3-21 . 3-23 . 3-27 . 4-10 . 6-7...
  • Page 10 A djustm ent Interactions...........................5-2 Power Supply Lim its and R ip p le ......................5-5 D eflection Accuracy L im its ........................5-8 A tte nu a to r Compensation A d ju stm e n ts....................5-10 Settings fo r Bandwidth Checks........................5-11 A and B Tim ing A c c u ra c y ..........................5-15 Settings fo r Tim ing Accuracy C h e c k s ......................
  • Page 12 diately accessible as one reads the markings, or a hazard to property, including the equipm ent itself. DANGER indicates a personal in ju ry hazard im m ediately accessible as one reads the marking. Symbols in This Manual This symbol indicates where applicable...
  • Page 13 Upon loss o f the protective-ground connection, all acces­ sible conductive parts (including knobs and controls that may appear to be insulating) can render an electric shock. Use the Proper Power Cord Use on ly the power cord and connector specified fo r yo u r product.
  • Page 14 ‘“'K'...
  • Page 15 2215 Service 3 8 2 6 - 0 1 The 2215 Oscilloscope. viii...
  • Page 16 SPECIFICATION INTRODUCTION PERFORMANCE CONDITIONS The T E K T R O N IX 2215 Oscilloscope is a rugged, lig h t­ The fo llo w in g electrical characteristics (Table 1-1) are weight, dual-channel, 60-MHz instrum ent that features a...
  • Page 17 2.5 to 1. Measured w ith a vertically centered Step Response 5-division reference signal from a 50-12 source driving a 50-12 coaxial cable th a t is term inated in 50 12 at the input connector, w ith the V O L T S /D IV Variable control in its C AL detent.
  • Page 19 TRIGGER SYSTEM A Trigger Sensitivity A U TO and NORM 0.4 division internal or 50 m V external External trigger signal from a 50-12 to 2 MHz, increasing to 1.5 divisions source driving a 50-12 coaxial cable internal or 250 m V external at 60 MHz. that is term inated in 50 12 at the input connector.
  • Page 20 u v v c c p n a L C Calibrated Range A Sweep 0.5 s per division to 0.05 jus per division in a 1-2-5 sequence. X10 Magnifier extends maxim um sweep speed to 5 ns per division. B Sweep 50 ms per division to 0.05 /is per division in a 1-2-5 sequence.
  • Page 22 0°C to +50° C ±6%a ±4%a Bandwidth Measured w ith a 5-division reference signal. X -Axis Dc to at least 2 MHz. Same as V ertical Deflection System. Y -Axis Phase Difference Between X- ±3° from dc to 50 kHz.3 W ith dc-coupled inputs.
  • Page 23 Table 1 2 Environmental Characteristics Characteristics Description NOTE The instrum ent meets all o f the fo llo w in g M IL-T -28800B require­ ments fo r Class 5 equipment. Temperature Operating 0°C to + 50°C (+ 32°F to +122°F). Nonoperating - 5 5 °...
  • Page 24 •-toct iiiiii \ i / .o m /, vviuiuui n u iil-rd i lei W ith Handle Extended 511 mm (20.1 in).

  • Page 26: Line Voltage

    POWER CORD For the North American customer, the 120-V 2215 delivered with a three-wire power cord permanently attached. At the end of the cord is a three-contact plug for connection to the power source and to protective ground. The plug’s protective-ground contact connects (through the protective-ground conductor) to the accessible metal parts of the instrument.

  • Page 27: Line Fuse

    LINE FUSE The instrum ent fuse holder is located on the rear panel (see Figure 2-2) and contains the line fuse. V e rify th a t the proper fuse is installed perform ing the fo llo w in g procedure: 1.
  • Page 28 N o rth A m e ric a 2 A , 2 5 0 V O p tio n A 4 2 4 0 V F a s t-b lo w A G C /3 A G N o n e 1 5 A A G C /3 A G 3 3 9 7 - 0 3...

  • Page 30: A Nd In D Ic A T O R S

    A U T O FOCUS C o n tro l—Adjusts display fo r optim um d e fin ition . Once set, the focus of the c rt display w ill Figure 2-3. Power, display, and probe adjust controls, connector, and indicator.
  • Page 31 used to align the c rt trace w ith the horizontal graticule lines. ^ Y ) AUTO INTENSITY Control— Adjusts brightness o f the c rt display. This control has no e ffect when the BEAM FIND switch is pressed in. Once the control set, intensity is autom atically...
  • Page 32 Figure 2-4. Vertical controls and connectors. ( i j ) Input Coupling (AC-GIMD-DC) Switches— Used to select the method o f coupling in p u t signals to the vertical deflection system. A C —ln p u t signal is capacitively coupled to the vertical am plifier.
  • Page 33 CH 1—Selects only the Channel 1 in p u t signal fo r display. BO TH —Selects both Channel 1 and Channel 2 in p u t signals fo r display. The BOTH position must be selected fo r either A D D , A L T , or CHOP operation.
  • Page 34 2215 6 0 MHz OSCILLOSCOPE Figure 2-5. Horizontal controls.
  • Page 35 3 3 9 8 -0 6...
  • Page 36 Sweep generator at a sweep speed determined by the setting o f the B SEC /D IV switch. The start o f the B Sweep is delayed from the start o f the A Sweep by a tim e determined by the settings o f both the A S EC /D IV switch and the B D E L A Y T IM E POSITION co n tro l.
  • Page 37 signals. Figure 2-6. Trigger controls, connector, and indicator. < ®...
  • Page 38 E X T —Permits triggering on signals applied to the EXT INPUT connector. (2 ? ) A & B IN T S w itch—Selects the source o f the trig ­ gering signal when the A SOURCE switch is set to INT.
  • Page 39 repetition rates o f at least 20 Hz. Sweep free-runs in the absence o f an adquate trigger signal o r when the repetition rate is below 20 Hz. The range o f the A TR IG G ER L E V E L control is autom atically set to the peak-to-peak range o f the trigger level.
  • Page 40 Figure 2-7. Rear-panel connector.

  • Page 42: E R T Ic A L

    GROUNDING The most reliable signal measurements are made when the 2215 and the u n it under test are connected by a com­ mon reference (ground lead), in addition to the signal lead or probe. The probe's ground lead provides the best...

  • Page 43: Input Coupling Capacitor Precharging

    impedance matching devices. INPUT COUPLING CAPACITOR PRECHARGING When the input coupling switch is set to G ND, the inp ut signal is connected to ground through the in p u t coupling capacitor in series w ith a 1-M12 resistor to form a pre­ charging netw ork.

  • Page 44: Baseline Trace

    then plug the power cord in to an approved ac-power-source o utlet. BASELINE TRACE First obtain a baseline trace. Preset the instrum ent front-panel controls as follow s: Display F u lly counterclockwise A U T O IN TEN S ITY (m inim um ) A U TO FOCUS Midrange...

  • Page 45: Signal Display

    A EXT COUPLING A SOURCE IN T A & B I N T V E R T MODE B Trigger SLOPE (lever up) L E V E L F u lly clockwise Press in the POWER switch b u tto n (ON) and allow the instrum ent to warm up fo r 20 minutes.

  • Page 46: Magnified-Sweep Display

    MAGNIFIED-SWEEP DISPLAY 1. O btain a Signal Display (see preceding instructions). 2. A djust the H orizontal POSITION control to move the trace area th a t is to be magnified to the center o f the crt graticule (0.5 division on each side o f the center vertical graticule line).

  • Page 47: Delayed-Sw Eep

    SEP control to display the A trace above the B trace. A d ju st the AU TO IN T E N S IT Y control as needed to make intensified zone distinguishable fro m remainder o f the display. Set the B S EC /D IV switch u n til the intensified zone is the desired length.
  • Page 48 The display obtained when sinusoidal signals are applied to the X- and Y-axis is called a Lissajous figure. This display is com m only used to compare the frequency and phase relationships o f tw o in p u t signals.
  • Page 49 ' i ■ «_ u p | ^ i u p i i a i c i v j i the applied signal. Perform Step 3 and 4 under Displaying a TV Line-rate Signal. To display either Field 1 or Field 2 individually at faster sweep rates (displays of less than one full field), set VERTI­...
  • Page 50 the interconnections between parts o f the c irc u itry , to indicate c irc u it components, and to id e n tify interrelation­ ships w ith the front-panel controls. Schematic diagrams and the overall block diagram are located in the tabbed "D iagram s"...
  • Page 51 convention. Positive logic is a system o f notation whereby the more positive o f tw o levels is the TRUE (or 1) state; the more negative level is the FALSE (or 0) state. In this logic description the TRUE state is referred to as H I, and the FALSE state is referred to as LO.
  • Page 52 charging prevents large trace shifts o f the display when switching from GND to AC coupling. Each channel o u tp u t signal from the A tte n u a to r c ir­ c u itry is applied to the Vertical Preamplifier c irc u itry fo r fu rth e r am plification.
  • Page 53 teievision-signai verxicai-sync puises. i riggering television line rate is accomplished when either A U T O or NORM MODE is used. The Sweep Logic c ircu it controls the generation o f the sweep and the unblanking o f the Z-Axis A m p lifie r fo r the A Sweep display.
  • Page 54 Figure 3-1. Basic block diagram of the 2215 Oscilloscope.
  • Page 55 A front-panel PROBE ADJUST o u tp u t is provided fo r use in adjusting probe compensation. The voltage at the The DC Restoration c irc u it raises the o u tp u t level o f the Z-Axis A m p lifie r to allow it to be coupled to the c rt PROBE ADJUST connector is a negative-going square wave control grid.
  • Page 57 ^ mv z mv Z m V 5 m V 5 mV 5 m V 10 m V 10 mV 10 m V 20 m V 20 m V 20 mV 50 m V 50 m V 50 m V 100 m V 100 m V 100 m V...
  • Page 59 I he voltage drop across hti^o Diases u i j j about a 10-mA idle current. A bootstrap circu it composed o f Q139, V R 122, and R122 connects the Q122 drain to the Q122 source. This circ u it forces the bias voltage across Q122 to remain con­ stant, w hich in conjunction w ith the constant bias current supplied by R125, keeps Q122 operating at a constant power level to prevent d isto rtio n due to changing signal...
  • Page 60 o u tp u t stage fo r each channel. Vertical positioning o f the channel display is incorporated common-base am plifier stage. Channel 1 Vertical Preamplifier The Channel 1 Vertical Pream plifier produces d iffe r­ ential o u tp u t signals to drive the Vertical O u tp u t A m p lifie r and internal trigger signals to drive the Trigger c irc u itry .
  • Page 61 i n t e r n a l I r ig g e r H c k o t t A m p l i f i e r The Internal Trigger P icko ff A m p lifie r supplies trigger signals to the Internal Trigger A m p lifie r in the Trigger c irc u itry (Diagram 4).

  • Page 62: Channel Switch And Vertical Output

    previously established settings (V E R T IC A L MODE to BOTH, A & B IN T to V E R T MODE, and A SOURCE to I N T), the internal trigger-select signals alternate between channels. On one sweep the Channel 1 internal trigger w ill be selected as previously described.

  • Page 63: Delay Line D R Iv E R

    MODE is selected, the CH 1 Enable signal goes LO and the position activates the X -Y display feature. The CH 2+ VERTICAL S IC CR288 CH 1 + / / / T / . / / 'Z VERTICAL S IG n D i o o CR188 CR187...

  • Page 64: Delay Line

    Delay Line Delay Line D L350 provides about 100 ns o f delay in the vertical signal. When using internal triggering (CH 1, CH 2, or V E R T MODE), the delay tim e allows the Sweep Generator su fficie n t tim e to produce a sweep before the vertical signal reaches the c rt deflection plates.

  • Page 65: Channel Switching Logic Circuit

    display, Sep is LO and Q392 is biased o ff. This action allows A /B SWP SEP potentiom eter R395 to affect the bias on one side o f a d iffe re n tia l a m plifier composed o f Q380 and Q370.
  • Page 66 algebraic sum o f the tw o vertical signals. The Add Enable circu it, composed o f Q316, U197C, and U315A, is activated when both Diode Gates are turned on fo r an Add vertical display. W ith the Q and Q outputs o f U 317A H I, the o u tp u t o f U 315A w ill be LO and tran­...

  • Page 67: Internal Trigger Switching Logic

    the chopped channel sw itching is about 2bU kHz. The signal o u tp u t from U310C pin 8 is also fed to the Chop Blanking circu it. Capacitor C311 and resistors R310 R311 form a d iffe re n tia tin g c irc u it th a t produces positive and negative short-duration pulses when the Chop O scillator signal changes levels.
  • Page 68 ------------------------- 4 /;s ------------------------- ■* C H 1 ENABLE U 3 1 7 A , PIN 5 C H 2 ENABLE U 3 1 7 A , PIN 6 3 8 2 6 - 2 3 Figure 3-4. CHOP V E R T IC A L MODE waveforms. CHANNEL SOURCE.
  • Page 70 and 13 control the o u tp u t o f U315B. The LO on U305D pin 12 ensures a LO o u tp u t at pin 11, which is applied to U315C at pin 9. This LO ensures a HI o u tp u t at U315C pin 8, the CH 1 Trig signal line.
  • Page 71 i_wy io uoi/uooiui i iui ucau ijjiium ui oil uu I i U|jei duun/. The sum o f the tw o channel vertical signals is displayed, and the sum o f the tw o channel trigger signals is used as the internal trigger signal.

  • Page 72: Trigger

    TRIGGER The Trigger circuit, shown on Diagram 4, is composed of Internal External Trigger A m plifiers, Source­ sw itching circuit, and Trigger Generator circu it. Included in the Trigger Generator c irc u it is the A u to Trigger and A u to Baseline circ u itry and the T V Triggering c irc u itry .

  • Page 73: A External Trigger A M P Lifie R

    A External Trigger Amplifier The A External Trigger A m p lifie r provides a means o f triggering the instrum ent fro m an externally supplied signal th a t can be applied to the E X T INPUT connector. Input coupling to the A m p lifie r is selectable by the three-position A EXT COUPLING switch, S401.
  • Page 74 v ^ d p c j u u u i v ^ u u o u i i d i y e ^ p u * i u v e t J i m u c i voltage level. The charge is retained between trigger pulses due to the long RC tim e constant o f R505 and C503.

  • Page 75: Inverting Amplifier And T V Trigger Circuit

    th a t w ill produce a trigger signal at the o u tp u t o f Comparator. If the trigger signal am plitude at the base o f U460E is below the reference level, the S chm itt Trigger c irc u it w ill never switch.
  • Page 76 U460D causes a voltage drop th a t establishes the bias voltage on the base o f Q474. Current flo w ing through R473 and R472 produces a voltage drop across R473 th a t estab­ lishes the bias voltage on the base o f Q476. The circu it components are selected such th a t when the Comparator o u tp u t voltages from both halves are equal, the base...

  • Page 77: Auto Baseline Circuit

    from U480D pins 9 and 15. The d iffe re n tia l o u tp u t signal derived from U480D is applied to a tw o-transistor level- sh ifting circ u it composed o f Q492 and Q493. The level- sh ifting circu it converts the ECL logic levels to T T L logic levels required fo r the Sweep Generator.

  • Page 78: Miller Sweep Generator

    by the H orizontal A m p lifie r to provide horizontal deflec­ tio n on the crt. This sawtooth voltage (sweep) is produced on command from the Sweep Logic circuits. The Sweep Generator circuits also produce gate waveforms th a t are used by the A uto Intensity and Z-A xis circuits to establish the correct tim in g o f the c rt unblanking and intensity levels used fo r viewing the display.
  • Page 79 OF SW EEP Q 6 4 0 , -------------------------- CO LLECTO R START OF HOLDOFFv END OF HOLDOFF U 6 4 0 B , PIN 9 HO LDO FF T IM IN G U 6 4 0 B , PIN 1 4 HO LD O FF U 6 0 3 , P IN S 1 &...
  • Page 80 nit; nt: oweep l e q u u e u u i s u i i d r y e m i i i i i y c d ( j < i u i L u i . Logic c irc u it is prevented from responding to a trigger signal during this tim e by the H o ld o ff circuit.
  • Page 81 When the tim ing capacitor is charged up to the reset threshold o f U640B, the h o ld o ff tim e elapses, and U640B switches back to the stable state to place a HI on the Q o u tp u t (pin 9). The A End-of-Sweep Com parator o u tp u t on U607C previously became HI when the M ille r Sweep Generator finished resetting.
  • Page 82 When the A Sweep is to be displayed, the signals at U620 pins 9 and 10 are both HI and U620 pin 8 is LO. The LO reverse biases CR620, and the Intens Level current from the A u to Intensity c ircu it (Diagram 6) passes through CR622 as the A Z-Drive signal.
  • Page 83 voltage at one end o f C644 at about 3 V , w hile the Q o u tp u t o f U640B at pin 9 is H I. When the Q o u tp u t o f U640B goes LO at the start o f the h o ld o ff period, C644 couples the negative-going edge o f the pulse to the A lt Sync signal line.
  • Page 84 If the B TRIG G ER LE V E L control is not fu lly clock­ wise, Q573 is biased on, and the o u tp u t o f U 690A is LO. Pin 10 o f U665C w ill then be LO and, w ith the inverting by U690B, U 696A w ill not be held reset.

  • Page 85: Sweep Logic

    B Sweep Logic The B Sweep Logic c irc u itry utilizes inputs from the associated B Sweep c irc u itry to generate a signal c o n tro l­ ling both the B M iller Sweep and the B Z-A xis Switching Logic circuits.
  • Page 86 allowing only the A Sweep to be passed to the Horizontal A m p lifie r. In B H O R IZ O N T A L MODE, U696B pin 10 is HI and pin 13 is LO, holding U696B reset and allowing only the B Sweep to go to the H orizontal A m p lifie r.
  • Page 87 B Z-Axis Logic The B Z-Axis Switching Logic c irc u itry switches the B Z-Drive signal to supply current to the Z-Axis A m p lifie r fo r both the B and the A Intensified Sweep displays. The current supplied is summed w ith the other signal inputs on the Z-Drive line to produce the complete display...
  • Page 88 CR672 FROM U693B)------ ►— I ?9 Cf?3i7' B Z-DRIVE HALT HORIZONTAL U670C — 4 -------01— 4 ---- |<J- Z-AXIS MODE SWITCH AMPL R675 B GATE CR670 CR671 FROM U690C PIN 6 ----- U670B^O- -------- fX — « B DISP FROM U696B PIN 8 B DUTY TO AUTO PARTIAL...

  • Page 90: Z-Axis Amplifier

    The nonlinear current is connected to the em itters o f the differential am plifier composed o f Q811 and Q812. The emitters o f the tw o a m plifier transistors are held at a constant voltage by the action o f Q813. A U T O IN T E N ­ S ITY control R807 is connected to the base o f Q811 via R 811.
  • Page 91 response n m e . r u r negative ucm sm uns ui m e biynai, as well as fo r dc and low-frequency signal components, Q847 acts as the am plifier, w ith Q850 supplying the current. Diode CR856 prevents the Z-A xis o u tp u t signal from going negative, and neon lamps DS854 and DS856 provide protection to the Z-Axis A m p lifie r in the event o f high- voltage arcing in the crt.
  • Page 92 Z -A X IS AMPL Figure 3-7. Detailed block diagram of the Horizontal Amplifier.

  • Page 93: Horizontal

    TO CRT HORIZONTAL DEFLECTION PLATES 3826-22 3-23...

  • Page 94: Horizontal Preamplifier

    he A Disp signal becomes LU and b v V tfc r D i o r L A Y. I the B Disp signal applied to the base o f Q634 becomes HI. Switching transistor Q634 is biased on, and the A Sweep current is shunted to ground.

  • Page 95: A M P Lifie R

    The X -Axis signal is derived fro m the Channel 1 internal trigger signal and applied to the base o f Q703. Transistor Q703 is one-half o f a d iffere n tia l a m p lifie r composed o f Q703 and Q706.

  • Page 96: Power Supply

    Transistors Q780 and Q785 form a cascode feedback am plifier. Gain o f the stage is set by feedback resistor R785, and high-speed compensation is provided by C783 and adjustable capacitor C784. For dc and low-frequency components o f the horizontal deflection signal, Q789 acts as a current source fo r Q785.
  • Page 97 ■ W »»v itfiuLv/i UIIVUM, ug»JU, UJOU, and associated components provides overcurrent p rotection in the event o f tria c m isfiring o r ac-power-source transients. Q938 Transistor is an insulated-gate FET used as a switch in C937. Q933 the charging path o f Transistor controls the...

  • Page 98: Inverter

    conduction angle o f Q925. The Preregulator c irc u it can handle a wide range o f input voltages by changing the conduction angle o f the triac as the input voltage changes. As the in p u t voltage increases, the conduction angle w ill decrease to m aintain the Pre­...
  • Page 99 w ith the voltage on the w iper o t potentiom eter Ky4b. The current through Q954 w ill set the base drive o f Q956 and thereby control the voltage on C957. This voltage w ill bias Q940 and Q942 to a level th a t w ill m aintain the peak- to-peak in p u t voltage o f T940.
  • Page 100 tracking. follow ing discussion. Figure 3-8. Simplified diagram of the DC Restorer circuit. 3 27...
  • Page 102 The DC Restorer is referenced to the —2-kV c rt cathode voltage through R867 and CR867. In itia lly , both C865 and C864 w ill charge up to a level determined by the difference between the Z-A xis o u tp u t voltage and the cathode voltage. Capacitor C865 charges from the c rt cathode through R867, CR867, CR868, and R865 to the Z-Axis output.
  • Page 103 voltage is held constant by the long tim e-constant discharge path o f C865 through R868. Fast-rise and fast-fall transitions o f the Z-Axis o u tp u t signal are coupled to the c rt control grid through C865. The fast transitions start the c rt w riting-beam current tow ard the new intensity level.

  • Page 104: Section 4 Performance Check Procedure

    fro n t- and rear-panel controls and connectors. To ensure instrum ent accuracy, its performance should be checked after every 2000 hours o f operation or once each year, if used infrequently. TEST EQUIPMENT REQUIRED The test equipm ent listed in Table 4-1 is a complete list o f the equipm ent required to accomplish both the "Performance Check Procedure"...

  • Page 105: Preparation

    instrum ent th a t is operating in and has been previously calibrated in an ambient tem perature between +20° C and +30°C. The instrum ent also m ust have had as least a 20- m inute warm-up period. Refer to the "S p e c ific a tio n "...
  • Page 106 Z-axis check. Reference frequency: 50 kHz. A m p litu d e accuracy: constant w ith in 3% o f reference fre ­ quency as o u tp u t frequency changes. T E K T R O N IX TG 501 Time- H orizontal checks and 3.
  • Page 108 ^ in. B it size: j A iig n m e n x 1001 aRequires a TM 500-series power-module mainframe. INDEX TO PERFORMANCE CHECK STEPS Vertical Page 1. Check Deflection Accuracy and Variable Range . . . 4-4 2. Check B a n d w id th .............. 4-5 3.
  • Page 109 Adjustment l 001 Number 5284. Horizontal (cont) Page 4. Check Delay Time Dial A c c u ra c y ......... 4-8 5. Check Delay J itte r............4-8 6. Check POSITION C ontrol R a n g e ........4-8 7.

  • Page 110: E R T Ic A L

    Vertical POSITION (both) Midrange V E R T IC A L MODE CH 1 CH 1 V O L T S /D IV 2 mV CH 2 V O L T S /D IV 10 V V O L T S /D IV Variable (both) C A L detent IN V E R T...
  • Page 111 Set the V E R T IC A L MODE switch to CH 2 and move the cable from the CH 1 OR X in p u t connector to the CH 2 OR Y in p u t connector. Table 4-2 Deflection Accuracy Limits VOLTS/DIV...
  • Page 112 input connector. Set the generator o u tp u t am plitude fo r a 5-division, 50-kHz display. Change the generator o u tp u t frequency to the value shown in Table 4-3 fo r the corresponding V O L T S /D IV switch setting.
  • Page 113 POSITION control. Set the V E R T IC A L MODE switches to BOTH and A D D ; then push in the IN V E R T butto n . CHECK—Display am plitude is 0.6 division or less. If the check in part f meets the requirement, skip to part n.

  • Page 114: Horizontal

    Best focused display AUTO FOCUS Vertical Midrange Channel 1 POSITION CH 1 V E R T IC A L MODE CH 1 V O L T S /D IV 0.5 V CH 1 V O L T S /D IV C A L detent Variable Normal (button out)
  • Page 115 iMru connector. Use the Channel 1 POSITION control to center the trace vertically. A djust the A TR IG G ER L E V E L control fo r a stable, triggered display. Use the H orizontal POSITION co n tro l to align the firs t tim e marker th a t is 50 ns beyond the start o f the sweep w ith the 2nd vertical graticule line.
  • Page 116 Table 4-b Settings for Timing Accuracy Checks A AND B Time-Mark Generator Output SEC/DIV Magnified Switch Setting Normal 50 ns 0.05 jus 10 ns 0.1 jus 10 ns 0.1 /is 0.2 jus 0.2 jus 20 ns 0.5 jus 50 ns 0.5 jus 0.1 jus 2 jus...
  • Page 117 . A lign me sian sweep w im m e is i vertical graticule line. CHECK—Intensified p o rtio n o f the trace starts w ith in 0.5 division o f the start o f the sweep. Rotate the B D E L A Y T IM E POSITION control...
  • Page 118 e. C H E C K -T he D E L A Y TIM E POSITION dial setting is between 8.87 and 9.14. f. Set: A SEC/DIV 0.5 ms B SEC /D IV 50 ids g. Select 0.5-jus tim e markers. h.
  • Page 119 Check X-Gain a. Set: CH 1 V O L T S /D IV 20 m V A SEC /D IV b. Connect a 0.1-V standard-am plitude signal to the CH 1 OR X in p u t connector using a 50-L2 cable. CHECK—Display is 5 divisions ±0.25 division (4.75 to 5.25 divisions).
  • Page 120 Performance Check Procedure—2215 Service TRIGGERING Equipment Required (see Table 4-1): BNC T-C onnector (Item 8) Leveled Sine-Wave Generator (Item 2) Probe-tip-to-BNC A dapter (Item 9) 50-12 BNC Cable (Item 4) P6120 Probe (provided w ith instrum ent) 50-12 BNC Term ination (Item 5)
  • Page 121 10 mV VOLTS/DIV m. Move the generator o u tp u t from the CH 2 OR Y 10 pS A SEC/DIV in p u t connector to the CH 1 OR X inp ut connector. Set CH 1 V E R T IC A L MODE to CH 1. VERTICAL MODE LEVELED SINE-WAVE...
  • Page 122 g. CHECK—Stable display can be obtained by adjusting the A TR IG G ER LE V E L control fo r each switch com­ bination given in Table 4-6. Remove the 10X attenuator from the test setup and set the A E X T COUPLING switch to DC^-10. i.
  • Page 123 o. Set the generator to 60 MHz. p. Repeat parts g and h. q. Repeat part g. r. Disconnect the test setup. 4-11...
  • Page 124 i u r u o u a oesi a e n n e a display Vertical Midrange Channel 1 POSITION V E R T IC A L MODE CH 1 CH 1 V O L T S /D IV CH 1 V O L T S /D IV Variable C A L detent Channel 1 AC-GND-DC...
  • Page 125 Adjust the generator controls to produce a 5-volt, 50 kHz display. CHECK—For noticeable in te n sity m odulation. The positive part o f the sine wave should be o f lower intensity than the negative part. d. Disconnect the test setup. 2.
  • Page 126 maicaiea a neea ror aojusim ent ine instrum ent. TEST EQUIPMENT REQUIRED The test equipm ent listed in Table 4-1 is a complete list o f the equipm ent required to accomplish both the "A d ju s tm e n t Procedure" in this section and the "Per­ formance Check Procedure"...
  • Page 127 This procedure is structured in subsections to perm it adjustment o f individual sections o f the instrum ent (except the Power Supply) whenever a complete readjustm ent is n o t required. For example, if o nly the V ertical section fails to meet the Performance Requirements (or has had repairs made or components replaced), it can be readjusted w ith little or no effect on o th e r sections o f the instrum ent.
  • Page 128 AUTO FOCUS ADJ GEOMETRY VERTICAL GAIN ATTENUATOR STEP BALANCE ATTENUATOR X I 0 BALANCE INVERT BALANCE CH 1/CH 2 BALANCE ATTENUATOR COMP VERTICAL OUTPUT COMP CH 1 4 CH 2 HF MATCH HORIZ GAIN HORIZ B GAIN HORIZ X I 0 GAIN MAG REGISTRATION DELAY D IA L START ADJ DELAY D IA L GAIN...
  • Page 130 Make initia l control settings as listed at the beginning o f each subsection. Then connect the test equipm ent to an appropriate ac-power-input source and connect the 2215 to a variable autotransform er (Item 10 in Table 4-1) th a t is set fo r 115 V ac.
  • Page 131 W . I • - -ggv............................ 10. A d ju st A tte n u a to r C om pensation.......5-10 11. A d ju st Vertical O u tp u t A m p lifie r C om pensation. .5-10 12.
  • Page 132 u m ^ m v v w w v / » $ r KS r - t f i s j s i y y / K J V \ T O / both the instrum ent and the test equipm ent and a llo w a 20-m inute warm-up p e rio d before com ­...
  • Page 133 NOTE Review the info rm a tio n a t the beginning o f the A djustm ent Procedure before starting this step. Remove the High-Voltage shield (see the "H igh- Voltage Shield" removal procedure in Section 6). W A R N I N G When checking the Head Room Voltage, use a d ig ita l voltm eter th a t is isolated fro m ground, because the Inverter pow er-supply c irc u itry com m on is at line...
  • Page 134 W975 8.34 to 8.86 +8.6 V < 1 0 W965 +30 V 28.5 to 31.5 < 5 0 +100 V W966 95 to 105 < 2 0 0 k. Connect the test oscilloscope, using a IX probe, to the firs t test poin t indicated in Table 5-2 and connect the probe ground lead to TP501.
  • Page 135 D. notate tne a u i u iini i ti\ib i i control Tuny counter­ clockwise. Connect a 50-12 te rm in a tio n to the E XT Z A X IS INPUT connector located on the rear panel. A D JU S T—Both the G rid Bias adjustm ent (R860) and the A U TO FOCUS control fo r a visible dot.
  • Page 136 CHECK—That the trace is parallel to the center horizontal graticule line.
  • Page 137 e. Disconnect the test setup. REV SEP 1981...
  • Page 138 A djustm ent Procedure—2215 Service VERTICAL Equipment Required (see Table 4-1): C alibration Generator (Item 1) Adapter (Item 9) Leveled Sine-Wave Generator (Item 2) Digital V o ltm e te r (Item 11) 50-£2 BNC Cable (Item 4) 1X Probe (Item 12) 50-£2 BNC Term ination (Item 5)
  • Page 139 v ^ i i d n y c u i t ; 0 1 i i v i u l s w i l l i i Repeat parts b through e fo r Channel 2, adjusting Ch 2 Step Bal (R238) in step d. 3.
  • Page 140 Setting Signal (Divisions) (Divisions) 2 mV 10 mV 4.85 to 5.15 5 m V 20 mV 3.88 to 4.12 50 mV 4.85 to 5.15 10 m V 20 mV 0.1 V 4.85 to 5.15 50 mV 0.2 V 3.88 to 4.12 0.1 V 0.5 V 4.85 to 5.15...
  • Page 141 o c L LI I O V L . I I I I O r A L I V I U U U 3 V V I L U I L / l I O I I U I I I U V C the input signal from the CH 2 OR Y in p u t connector to the CH 1 OR X in p u t connector.
  • Page 142 a. t»ei xne u n t swucn t o ^ u m v . v u l i s u i v Center the trace on the center horizontal graticule line using the Channel 2 POSITION control. c. Push in the IN V E R T butto n . A DJU ST—Invert Bal (R264) to position the trace on the center horizontal graticule line.
  • Page 143 Replace the probe and probe-tip-to-bnc adapter w ith a 50-S7 cable. A djust the generator o u tp u t fo r a 5-division display. NOTE Use Table 5-4 to id e n tify the correct capacitor fo r each channel adjustm ent AD JU ST—The H O LF Comp capacitor fo r best fro n corner.

  • Page 144: A D Ju St Vertical O U Tp U T A M P Lifie R C Om Pensation

    A djust the generator o u tp u t to produce a display as close as possible to 5 divisions. r. AD JU ST—The -MOO In p u t C capacitor fo r best fla t top. s. Repeat parts m through r u n til no fu rth e r im prove­ ment is noted.

  • Page 145: A Djust Channel Matching And Check Bandwidth

    Set the CH 2 V O L T S /D iV switch to 0.1 V and repeat parts f and g fo r best compromise w ith the 20-m V V O LT S / D IV switch setting. j. Disconnect the test setup. Adjust Channel Matching (C167) and Check Bandwidth a.

  • Page 146: Check Common-Mode Rejection Ratio

    k. CHECK—Display am plitude is 3.5 divisions or greater. Repeat parts i through k fo r all indicated CH 1 V O L T S /D IV switch settings, up to the output-voltage upper lim it o f the sine-wave generator being used. Move the generator o u tp u t signal from the CH 1 OR X in p u t connector to the CH 2 OR Y in p u t connector.

  • Page 147: Check Position Control Range

    Set V E R T IC A L MODE to BOTH. A djust the CH 2 V O L T S /D IV Variable control fo m inim um display am plitude (best CMRR). Change the generator frequency to 10 MHz. CHECK—Display am plitude is 0.6 division or less.
  • Page 148 CH 1 VOLTS/DIV 0.5 V CH 2 VOLTS/DIV 10 mV VERTICAL MODE CH 1 b. Connect a 10-MHz leveled sine-wave signal via a 50-12 cable and a 50-0 termination to the CH 1 OR X input connector. c. Adjust the generator output for an 8-division input connector.

  • Page 149: Horizontal

    Adjustment Procedure—2215 Service HORIZONTAL Equipment Required (see Table 4-1): C alibration Generator (Item 1) Tw o 50-12 BNC Term inations (Item 5) Leveled Sine-Wave Generator (Item 2) Screwdriver (Item 14) Tim e-M ark Generator (Item 3) Low-Capacitance A lignm ent Tool (Item 15)

  • Page 150: A Dju St 5-Jus T Im In G

    A SEC/DIV 0.1 ms B SEC/DIV 1 jus X10 Magnifier O ff (knob in) Select 0.1-ms tim e markers from the tim e-m ark generator and verify th a t the B D E L A Y TIM E POSITION control is set to 1.00.
  • Page 151 Set the X 10 M agnifier on (knob out) and select 10-ns tim e markers from the tim e-m ark generator. NOTE In the n e xt p art, keep the adjustm ent screws fo r C774 and C784 as close to the same length as possible. A DJU ST—5 ns T im ing (C774 and C784) alternately fo r one tim e marker every 2 divisions over the center 8 divisions o f the magnified sweep.
  • Page 152 i duit? u-u me dfjpiiLdutc fju^iuun ui me may- iu i a i u nifier. When making the check w ith the X 10 M agnifier On, exclude any p o rtio n o f the sweep past the 100th magnified division.
  • Page 153 A AND B Time-Mark Generator Output SEC/DIV Switch Setting Normal X 10 Magnified 0.05 jus 50 ns 10 ns 0.1 jus 0.1 jus 10 ns 0.2 jus 0.2 jus 20 ns 0.5 jus 0.5 jus 50 ns 0.1 ^s JU S JU S 2 jus 2 jus...

  • Page 154: Check Sec/Div Variable Range

    Check SEC/DIV Variable Range Set: CH 1 V O L T S /D IV 0.5 V Channel 1 AC-GND-DC H O R IZ O N T A L MODE A S E C /D IV 0.2 ms S EC /D IV Variable F u lly counterclockwise X 10 Magnifier O ff (knob in)

  • Page 155: 10. Check Delay Jitter

    Repeat parts c through e. 10. Check Delay Jitter Set the B S EC /D IV sw itch to 0.5 fis. b. Select 10-jus tim e markers. c. S lightly readjust the B D E L A Y TIM E POSITION dial to position a tim e marker w ith in the graticule area.
  • Page 156 i u n in p u t c u n rie c iu r using a u u - ii caDie. u is c o n n e ct m e test seiu...
  • Page 157 A U TO IN T E N S IT Y As desired A U TO FOCUS Best focused display Vertical (both) POSITION Midrange V E R T IC A L MODE CH 1 V O LTS D IV 20 mV V O L T S /D IV Variable C AL detent IN V E R T...

  • Page 158: C Heck/A Djust A U To Trigger Centering And

    A djust the generator o u tp u t fo r a 50-kHz, 5-division display. A D JU S T—Slope Bal (R482) fo r a positive vertical s h ift o f 0.15 division at the sweep start when changing the A TR IG G ER SLOPE switch f r o m t o J ~ .
  • Page 159 Table 5-8 Switch Combinations for A Triggering Checks TRIG G ER MODE TR IG G ER SLOPE NORM " V NORM AUTO AU TO Set the H O R IZ O N T A L MODE switch to B. CHECK—Stable display can be obtained by adjusting the B TRIG G ER L E V E L control fo r both positive- and negative-going positions o f the B TR IG G ER SLOPE switch.

  • Page 160: Check External Triggering

    Repeat parts e and f. Move the generator o u tp u t from the CH 1 OR X in p u t connector to the CH 2 OR Y in p u t connector. Set V E R T IC A L MODE to CH 2. r.
  • Page 161 50 mV VOLTS/DIV (both) VERTICAL MODE CH 1 A SEC/DIV A SOURCE 5-20...
  • Page 162 q. Repeat part g. r. Disconnect the test setup. REV SEP 1981...
  • Page 163 Vertical Channel 1 POSITION Midrange CH 1 V E R T IC A L MODE CH 1 V O L T S /D IV CH 1 V O LT S /D IV Variable C AL detent Channel 1 AC-GND-DC Horizontal POSITION Midrange H O R IZ O N T A L MODE...

  • Page 164: 2. Check Probe Adjust Operation

    display. k m z CHECK—For noticeable intensity m odulation. The positive part o f the sine wave should be o f lower intensity than the negative part. d. Disconnect the test setup. 2. Check PROBE ADJUST Operation a. Set: CH 1 V O L T S /D IV 10 m V A S E C /D IV 0.5 ms...
  • Page 166 Static discharge can damage any sem iconductor com ponent in this instrum ent. This instrum ent contains electrical components th a t are susceptible to damage fro m static discharge. Table 6-1 lists the relative susceptibility o f various classes o f semi­ conductors.
  • Page 167 Table 6-1 Relative Susceptibility to Static-Discharge Damage Relative Susceptibility Semiconductor Classes Levels3 MOS or CMOS m icrocircuits or discretes, or linear m icrocircuits w ith MOS inputs {M ost Sensitive) S chottky signal diodes S chottky T T L High-frequency bipolar transistors JFET Linear m icrocircuits Low-power S chottky T T L...
  • Page 168 The cabinet minimizes accumulation o f dust inside the instrum ent and should norm ally be in place when operating the 2215. The optional front-panel cover provides both dust and damage protection fo r the fro n t panel and c rt face, and it should be in place whenever the instrum ent is stored or is being transported.
  • Page 169 C A U T I O N To prevent getting m oisture inside the instrum ent during external cleaning, use o n ly enough liq u id to dampen the d o th o r applicator. CLEANING. Loose dust on the outside o f the instru­ ment can be removed w ith a soft clo th or small soft-bristle brush.
  • Page 170 Internal Inspection Checklist Item Inspect For Repair A ction C ircuit Boards Loose, broken, or corroded solder connections. Clean solder corrosion w ith an eraser and flush Burned c irc u it boards. Burned, broken, or w ith isopropyl alcohol. Resolder defective cracked circuit-run plating.
  • Page 172 Spray riot water in to the slots at the to p o f each switch housing w hile rotating the switch control knob. Spray only fo r approxim ately five seconds, using an atom izing spray device. Dry both the switch and the c ircu it board on which it is m ounted, using dry low-pressure air.
  • Page 173 PERIODIC READJUSTMENT To ensure accurate measurements, check the p erform ­ ance o f this instrum ent after every 2000 hours o f operation, o r if used infrequently, once each year. In addition, replace­ ment o f components may necessitate readjustment o f the affected circuits.
  • Page 174 enclosed w ith in heavy black lines. Also w ith in the black lines, near either the to p or the bo tto m edge, are the assembly number and name o f the c irc u it board. Component numbers and electrical values o f com po­ nents in this instrum ent are shown on the schematic diagrams.
  • Page 175 A c irc u it board interconnection diagram is also provided in the "D iagram s" section to aid in tracing a signal path or power source between boards. The entire oscilloscope is illustrated, w ith plug and jack numbers shown along w ith associated pin numbers.
  • Page 176 i r u i i i a i i i j i u u c u u i c o a u u m u i l a i i i i i u i m a u u n u o c u perform ing the particular troubleshooting step called fo r in that box.
  • Page 177 I M o l l u i I i t n i i . i i i c b c l U d u l u i i i l y u i c u i u i c i m u t d j c o i y i c ;...
  • Page 178 section. Before using any test equipm ent to make measure­ ments on static-sensitive, current-sensitive, o r voltage- sensitive components o r assemblies, ensure th a t any voltage o r current supplied b y the test equipm ent does n o t exceed the lim its o f the com ponent to be tested.
  • Page 179 5. Isolate Trouble to a Circuit To isolate problems to a particular area, use the trouble sym ptom to help id e n tify the c irc u it in w hich the trouble is located. Refer to the troubleshooting charts in the "D iagram s"...
  • Page 180 f i / u / / c O O l L f / L / , f W U t c t / / c / C U L / / / / / / Z C / / U C U ( .
  • Page 181 paring tw o voltages taken w ith respect to ground. If the form er method is used, both leads o f the voltm eter must be isolated from ground. If values less than these are obtained, either the device is shorted or no current is flo w in g in the external circu it. If values exceed the emitter-to-base values given, either the junction is reverse biased or the device is defective.
  • Page 182 perform ed in much the same manner as on transistor emitter-to-base junctions. Do n o t check tunnel diodes o r back diodes w ith an ohm m eter; use a dynam ic tester, such as the T E K T R O N IX 576 Curve Tracer. DIODES.
  • Page 183 10. Repair and Adjust the Circuit If any defective parts are located, fo llo w the replace­ ment procedures given under "C orrective M aintenance" in this section. A fte r any electrical com ponent has been replaced, the performance fo r th a t particular c irc u it should be checked, as well as the performance o f other closely related circuits.
  • Page 184 s o u rce b e fo re re m o v in g o r in s ta llin g c o m p o n e n ts . Use care not to interconnect instrum ent grounds which may be at d iffe re n t potentials (cross grounding). When soldering on c irc u it boards o r small insulated wires, use only a 15-watt, pencil-type soldering iron.
  • Page 185 numbers). 2. Instrum ent serial number. 3. A description o f the part (if electrical, include its com ponent number). 4. T e ktro n ix part number. MAINTENANCE AIDS The maintenance aids listed in Table 6-4 include items required fo r perform ing most o f the maintenance p ro ­ cedures on this instrum ent.
  • Page 186 replacement. 7. Diagonal Cutters Component removal and replacement. 8. Vacuum Solder No static charge retention. Unsoldering components. Pace Model PC-10. E xtractor 9. Lubricant No-Noise. Switch lubrication. T e k tro n ix Part Number 006-0442-02. 10. Pin-replacement K it Replace c irc u it board T e k tro n ix Part Number connector pins.
  • Page 188 When soldering on c irc u it boards or small insulated wires, use only a 15-watt, pencil-type soldering iron. A higher wattage soldering iron can cause etched c irc u it conductors to separate from the board base material and m elt the insulation on small wires.
  • Page 189 Excessive heat can cause the etched c irc u it con­ ductors to separate from the c irc u it board. Never a llo w the solder extra ctor tip to remain a t one place on the board fo r more than three seconds. Solder w ick, spring-actuated o r squeeze-bulb solder suckers, and heat blocks (fo r desoldering m u ltip in com ­...
  • Page 190 To remove the instrum ent cabinet, perform the fo llo w ­ ing steps: Disconnect the instrum ent from its ac-power-input sou rce. On instruments w ith detachable power cords, dis connect the power cord from the instrum ent. Remove the screw from the right rear side o f the cabinet and tw o screws from the rear panel.
  • Page 191 To remove the crt, perform the fo llo w in g steps: Disconnect fo u r deflection-plate wires at the m iddle o f the crt neck and unplug the Trace R o ta tio n connector (P8006) from Front-Panel c irc u it board (note the connection locations and w ire color fo r...
  • Page 192 8. Reconnect the c rt anode lead to the High-Voltage M u ltip lie r (disconnected in step 2). Reconnect the fo u r deflection-plate wires and the Trace Rotation connector (disconnected in step 1). High-Voltage Shield To remove the High-Voltage shield, perform the fo llo w ­ ing steps: 1.
  • Page 193 Reinstall the screw holding the shield to the Main c irc u it board at the right side o f the frame (removed in step 2). Reinstall the plastic high-voltage cover on the bo ttom o f the Main circ u it board and secure the shield and cover w ith one screw (removed in step 1).
  • Page 194 Set the CH 1 and CH 2 V O L T S /D IV switches to the same position; then remove their knobs by pulling straight o u t from the fro n t panel. Note switch positions fo r reinstal­ lation reference.
  • Page 195 tne oottom o t the shield and separate the shield fro m the c ircu it board. To reinstall the A ttenuator/Sw eep c irc u it board, per­ fo rm the follow ing steps: If the shield has been removed, secure it to the Attenuator/Sw eep circu it board...
  • Page 196 set screws. Front-Panel Circuit Board To remove the Front-Panel c ircu it board, perform the follo w ing steps: Remove c rt (see the "Cathode-Ray T ube" removal procedure). 2. Remove the Attenuater/Sw eep c irc u it board (see the "A ttenuator/S w eep C ircuit B oard"...
  • Page 197 disassembly steps. Use a vacuum-desoldering to o l to unsolder the 39 w ire straps from the Main c irc u it board w hich connect to the Front-Panel c irc u it board. Remove the Front-Panel c irc u it board from instrum ent and clean the wire-strap holes on the Main circu it board o f any remaining solder.
  • Page 198 Reinstall the c rt (see the "Cathode-Ray T u b e " reinstallation procedure). Main Circuit Board A ll components on the Main c irc u it board are accessible either d ire ctly or by removing the crt, Attenuator/Sw eep c irc u it board, o r High-Voltage shield.
  • Page 199 Unsolder tw o sets o f delay-line wires fro m the Main c irc u it board, noting w ire colo r and position fo r reinstal­ lation reference. Remove tw o screws securing power-supply transistor heat-sink assembly to the right side o f the frame. Remove three screws securing the Main c irc u it board to the instrum ent frame (one under the E X T Z A X IS connector and tw o along the le ft side o f the Main circu it...
  • Page 200 20. Move the fro n t part o f the Main c irc u it board in to position. Align the 39 wire straps and insert them in to th eir corresponding holes w hile m aintaining their original shape and spacing.
  • Page 201 Current Limit Circuit Board To remove the Current L im it board, perform the fo llo w ­ ing steps: 1. Remove the High-Voltage shield (see the "H igh- Voltage S hield" removal procedure). 2. Disconnect the fo u r single-wire connectors fro m the Current L im it board (P801, P802, P803, and P804).
  • Page 202 6-19...
  • Page 206 A list of assemblies can be found at the beginning of the Electrical Parts List. The assemblies are listed in numerical order. When the complete component number of a part is known, this list will identify the assembly in which the part is located. CROSS INDEX-MFR.
  • Page 207 Indicates part number to be used when ordering replace­ ment part from Tektronix. SERIAL/MODEL NO. (columns three and four of the Electrical Parts List) Column three (3) indicates the serial number at which the part was first used.
  • Page 208 FAIRCHILD CAMERA AND INSTRUMENT CORP. 09969 DALE ELECTRONICS, INC. 12697 CLAROSTAT MFG CO. , INC. 12969 UNITRODE CORPORATION 13511 AMPHENOL CARDRE DIV., BUNKER RAMO CORP. 14552 MICRO SEMICONDUCTOR CORP. 14752 ELECTRO CUBE INC. 15238 ITT SEMICONDUCTORS, A DIVISION OF INTER NATIONAL TELEPHONE AND TELEGRAPH CORP.
  • Page 209 464 ELLIS STREET MOUNTAIN VIEW, CA 94042 YANKTON, SD 57078 P O BOX 180, EAST HIGHWAY 50 LOWER WASHINGTON STREET DOVER, NH 03820 WATERTOWN, MA 02172 580 PLEASANT STREET LOS GATOS, CA 95030 2830 E FAIRVIEW ST. SANTA ANA, CA 92704 1710 S.
  • Page 210 REV AUG 1982...
  • Page 211 A10C179 281-0823-00 CAP. ,FXD,CER DI:470PF 10% * 50V 12969 CGB471KDN A10C180 283-0648-00 CAP. ,FXD,MICA D:10PF,5%,100V 00853 D151C100D0 A10C185 281-0791-00 CAP. ,FXD,CER DI:270PF,10%,100V 72982 8035D2AADX5R271K A10C193 281-0862-00 CAP. , FXD,CER DI:0.001UF,+80-20%,100V 20932 401-ES-100AD102Z A10C199 290-0136-00 CAP. ,FXD,ELCTLT:2.2UF,20%,20V 56289 162D225X0020CD2 A10C253 281-0862-00 CAP.
  • Page 213 A10C455 281-0862-00 CAP.,FXD,CER DI:0.001UF,+80-20%,100V 281-0773-00 CAP.,FXD,CER DI:0.OlUF,10%,100V A10C457 A10C458 281-0773-00 CAP.,FXD,CER DI:0.01UF,10%,100V 281-0773-00 CAP.,FXD,CER DI:0.OlUF,10%,100V A10C476 A10C477 281-0773-00 CAP.,FXD,CER DI:0.01UF,10%,100V A10C480 281-0773-00 CAP.,FXD,CER DI:0.01UF,10%,100V 290-0246-00 CAP.,FXD,ELCTLT:3.3UF,10%,15V A10C503 AIOC504 290-0246-00 CAP.,FXD,ELCTLT:3.3UF,10%,15V A10C505 281-0773-00 CAP.,FXD,CER DI:0.01UF,10%,100V A10C506 283-0177-00 CAP.,FXD,CER DI:1UF,+80-20%,25V AIOC564 281-0773-00 CAP.,FXD,CER DI:0.01UF,10%,100V A10C569 281-0773-00...
  • Page 214 401-ES-100AD102Z 20932 04222 GC70-1C103K 04222 GC70-1C103K 04222 GC70-1C103K 04222 GC70-1C103K GC70-1C103K 04222 56289 162D335X9015CD2 162D335X9015CD2 56289 04222 GC70-1C103K 56289 273C5 04222 GC70-1C103K 04222 GC70-1C103K CGE223MEZ 12969 401-ES-100AD102Z 20932 SA205E104MAA 04222 04222 SA205E104MAA 04222 SA205E104MAA 401-ES-100AD102Z 20932 20932 401-ES-100AD102Z 20932 401-ES-100AD102Z SA205E104MAA 04222 04222...
  • Page 215 SA205E104MAA CAP..FXD.CER DI:0.1UF,20%,50V 04222 A10C798 281-0775-00 CAP..FXD.CER DI:0.1UF,+80-20%,200V 56289 2C20Z5U104Z200B A10C799 283-0057-00 12969 CGB681KDX A10C803 B010100 B018549 CAP..FXD.CER DI:680PF,10%,50V 281-0820-00 72982 8035D2AADX5R271K A10C803 B018550 CAP.,FXD,CER DI:270PF,10%,100V 281-0791-00 CAP..FXD.CER DI:0.01UF,10%,100V 04222 GC70-1C103K A10C810 XB010685 281-0773-00 CAP.,FXD, CER DI:O.OlUF,10%,100V 04222 GC70-1C103K A10C820 281-0773-00 TAC105K035P02 A10C821...
  • Page 217 CAP.,FXD,CER DI:0.02UF,+80-20%,3000V 283-0430-00 B010100 B018549 A10C995 CAP.,FXD,MTLZD:0.01 UF,20%,4000V 285-1184-00 B018550 A10C995 SEMICOND DEVICE:SILICON,30V,150MA A10CR177 152-0141-02 SEMICOND DEVICE:SILICON,30V,150MA 152-0141-02 A10CR178 SEMICOND DEVICE:SILICON,30V,130MA A10CR187 152-0141-02 SEMICOND DEVICE:SILICON,30V,150MA A10CR188 152-0141-02 SEMICOND DEVICE:SILICON,30V,150MA A1OCR196 152-0141-02 SEMICOND DEVICE:SILICON,30V,150MA 152-0141-02 A10CR277 SEMICOND DEVICE:SILICON,30V,150MA A10CR278 152-0141-02 SEMICOND DEVICE:SILICON,30V,150MA A10CR287 152-0141-02 SEMICOND DEVICE:SILICON,30V,150MA...
  • Page 218 OOOIQ HVUiiUy 84411 TEK-183103040 01295 1N4152R 1N4152R 01295 01295 1N4152R 01295 1N4152R 1N4152R 01295 01295 1N4152R 01295 1N4152R 01295 1N4152R 1N4152R 01295 01295 1N4152R 1N4152R 01295 1N4152R 01295 1N4152R 01295 01295 1N4152R 01295 1N4152R 01295 1N4152R 1N4152R 01295 01295 1N4152R 01295 1N4152R 01295...
  • Page 219 SEMICOND DEVICE:RECTIFIER,SILICON,600V B010100 B021199X A10CR931 152-0782-00 SEMICOND DEVICE:RECTIFIER,SILICON,600V B010100 B021199X A10CR933 152-0782-00 SEMICOND DEVICE:SILICON,200V,0.75A 152-0414-00 A10CR940 SEMICOND DEVICE:SILICON,200V,0.75A A10CR942 152-0414-00 SEMICOND DEVICE:SILICON,30V,150MA A10CR936 152-0141-02 SEMICOND DEVICE:SILICON, 400V,750MA A10CR961 152-0413-00 SEMICOND DEVICE:SILICON, 400V,750MA A10CR963 152-0413-00 SEMICOND DEVICE:SILICON,200V,0.75A A10CR965 152-0414-00 SEMICOND DEVICE:SILICON,200V,0.75A 152-0414-00 A10CR967 SEMICOND DEVICE:SILICON,200V,0.75A...
  • Page 220 05828 GP20J-009 05828 GP20J-009 12969 UTR308 12969 UTR308 1N4152R 01295 UTR307 12969 12969 UTR307 12969 UTR308 12969 UTR308 12969 UTR308 12969 UTR308 12969 UTR308 12969 UTR308 12969 UTR307 15238 LG109 53944 A1B-3 53944 A1B-3 53944 A1B-3 53944 A1B-3 53944 A1B-3 02114 56-590-65/4A6 56-590-65/4A6...
  • Page 221 Tektronix Serial/Model No. Component No. Part No. Dscont Name Description Code Mfr Part Number & A10Q157 151-0712-00 TRANSISTOR:SILICON,NPN 04713 SPS8223 A10Q167 151-0712-00 TRANSISTOR:SILICON,NPN 04713 SPS8223 A10Q173 TRANSISTOR:SILICON,PNP 04713 SPS6868K 151-0188-00 A10Q177 151-0712-00 TRANSISTOR:SILICON,NPN 04713 SPS8223 A10Q187 151-0712-00 TRANSISTOR:SILICON,NPN 04713 SPS8223...
  • Page 222 A10R161 315-0360-00 RES.,FXD,CMPSN:36 OHM,52,0.25W 01121 CB3605 MFF1816G866R0F A10R162 321-0187-00 RES.,FXD,FILM:866 OHM,12,0.125W 91637 A10R163 321-0224-00 RES.,FXD,FILM:2.IK OHM,1%,0.125W 91637 MFF1816G21000F A10R168 321-0126-00 RES.,FXD,FILM:200 OHM,1%,0.125W 91637 MFF1816G200R0F A10R169 321-0199-00 RES., FXD,FILM:1.15K OHM,12,0.125W 91637 MFF1816G11500F A10R170 RES., FXD,FILM:1.27K OHM,1%,0.125W MFF1816G12700F 321-0203-00 91637 91637 MFF1816G71R50F A1OR17 2 321-0083-00 RES.,FXD,FILM:71.5 OHM,1%,0.125W...
  • Page 223 Replaceable Electrical Parts— 2215 Service Tektronix Serial/Model No. Component No. Part No. Dscont Name Description Code Mfr Part Number & 321-0225-00 RES. , FXD,FILM:2.15K OHM,1%,0.125W 91637 MFF1816G21500F A10R263 311-1567-00 RES. ,VAR,NONWIR:TRMR,100 OHM,0.50W 91-89-0 A10R264 73138 A10R266 321-0253-00 RES. ,FXD,FILM:4.22K OHM,1%,0.125W...
  • Page 224 321-0130-00 RES. ,FXD,FILM:221 OHM,1%,0.125W 91637 A10R361 MFF1816G221R0F 315-0390-00 RES. ,FXD,CMPSN:39 OHM,5%,0.25W CB3905 A10R363 01121 A10R364 321-0180-00 RES. ,FXD,FILM:732 OHM,1%,0.125W 91637 MFF1816G732R0F 311-1236-00 RES. ,VAR,NONWIR:250 OHM,10%,0.50W 72-22-0 A10R366 73138 311-1237-00 RES. ,VAR,NONWIR:IK OHM,10%,0.50W 32997 A10R367 3386X-T07-102 315-0912-00 RES. , FXD,CMPSN:9.IK OHM,5%,0.25W 01121 CB9125 A10R368...
  • Page 226 > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > I— » k — » H-i k —...
  • Page 227 A10R525 315-0274-00 RES. ,FXD,CMPSN:270K OHM,5%,0.25W 01121 CB2745 A10R526 315-0274-00 RES. ,FXD,CMPSN:270K 0HM,52,0.25W 01121 CB2745 A10R527 315-0473-00 RES. , FXD,CMPSN:47K 0HM,5%,0.25W 01121 CB4735 A10R528 315-0473-00 RES. , FXD,CMPSN:47K 0HM,5%,0.25W 01121 CB4735 A10R603 315-0512-00 RES. , FXD,CMPSN:5.IK 0HM,5%,0.25W 01121 CB5125 A10R605 315-0512-00 RES.
  • Page 228 > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > h — • ►...
  • Page 229 315-0471-00 RES. ,FXD,CMPSN:470 OHM,5%,0.25W A10R850 01121 CB4715 315-0222-00 RES. , FXD,CMPSN:2.2K OHM,5%,0.25W A10R851 01121 CB2225 315-0104-00 RES. ,FXD,CMPSN:100K 0HM,5%,0.25W 01121 CB1045 A10R852 315-0180-00 XB012543 RES. ,FXD,CMPSN:18 OHM,5%,0.25W A10R854 01121 CB180S 315-0470-00 RES. , FXD,CMPSN:47 OHM,5%,0.25W A10R856 01121 CB4705 RES. ,VAR,NONWIR:20K 0HM,20%,0.50W 311-1558-00 73138 A10R860...
  • Page 231 A10RT356 307-0125-00 RES..THERMAL:500 OHM.10%,25 DEG C A10S901 260-1849-00 SWITCH,PUSH:DPDT,4A,250VAC,W/BRKT A10T448 120-1401-00 XFMR.TRIG: A10T925 120-1384-00 B010100 B021199X TRANSFORMER,RF:TOROID,2 WINDS A10T940 120-1348-00 XFMR,PWR,SDN&SU:HIGH VOLTAGE A10T942 120-1347-00 TRANSFORMER,RF:DRIVER SATURATING POT CORE A10TP444 214-0579-00 TERM,TEST POINT:BRS CD PL A10TP500 214-0579-00 TERM,TEST POINT:BRS CD PL A10TP501 214-0579-00 TERM,TEST POINT:BRS CD PL...
  • Page 232 50157 2D1595 31918 54937 120-1384-00 80009 120-1348-00 80009 80009 120-1347-00 80009 214-0579-00 80009 214-0579-00 214-0579-00 80009 80009 214-0579-00 80009 214-0579-00 80009 214-0579-00 214-0579-00 80009 80009 214-0579-00 80009 214-0579-00 214-0579-00 80009 156-1294-00 80009 CA3046 02735 80009 156-1294-00 27014 DM74LS09 80009 156-0728-02 27014 DM74LS132N 04713...
  • Page 233 A10W196 131-0566-00 XB019850 BUS CONDUCTOR:DUMMY RES,2.375,22 AWG 55210 L-2007-1 A10W197 BUS CONDUCTOR:DUMMY RES,2.375,22 AWG 55210 L-2007-1 131-0566-00 A10W198 BUS CONDUCTOR: DUMMY RES,2.375,22 AWG 55210 L-2007-1 131-0566-00 A10W199 BUS CONDUCTOR:DUMMY RES,2.375,22 AWG 55210 L-2007-1 131-0566-00 L-2007-1 A10W296 131-0566-00 XB019850 BUS CONDUCTOR:DUMMY RES,2.375,22 AWG 55210 BUS CONDUCTOR:DUMMY RES,2.375,22 AWG 55210...
  • Page 235 Replaceable Electrical Parts— 2215 Service Tektronix Serial/Model No. Component No. Part No. Dscont Name & Description Code Mfr Part Number A10W606 131-0566-00 BUS CONDUCTOR:DUMMY RES,2.375,22 AWG 55210 L-2007-1 A10W616 55210 131-0566-00 BUS CONDUCTOR:DUMMY RES,2.375,22 AWG L-2007-1 A10W640 55210 L-2007-1 131-0566-00 BUS CONDUCTOR:DUMMY RES,2.375,22 AWG...
  • Page 236 SEMICOND DEVICE:SILICON,30V,150MA 152-0141-02 A11CR705 SEMICOND DEVICE:SILICON,30V,150MA A11CR706 152-0141-02 LT EMITTING DIO:GREEN,565NM,35MA A11DS618 150-1029-00 TERMINAL,PIN:0.365 L X 0.025 PH BRZ GOLD All J1000 131-0608-00 (QTY 4) CONTACT,ELEC:0.64 INCH LONG A11J2000 131-0787-00 (QTY 10) RES.,FXD,CMPSN:5.6 OHM,5Z,0.25W 307-0107-00 A11R100 RES.,FXD,CMPSN:75 OHM,5%,0.25W A11R101 315-0750-00 RES.,FXD,CMPSN:1M OHM,5Z,0.25W 315-0105-00 A11R102...
  • Page 237 01295 1N4152R 1N4152R 01295 53184 XC209G 22526 47357 22526 47359 01121 CB56G5 01121 CB7505 CB1055 01121 01121 W8615 91637 MFF1816G46400F 01121 CB56G5 01121 CB7505 CB1055 01121 01121 W8615 91637 MFF1816G46400F 01121 W8615 01121 CB8205 91637 HFF1104F90002F 91637 MFF1816G11102F 24546 NA4D7323F 01121 CB1015 01121...
  • Page 238 A l l W O J O 1 1 1 - U 3 D D —U U D U O U r l l D l l U U 1U/1V ; l\E i O , Z. . J f J , f v w v j 55210 L-2007-1...
  • Page 239 ftULlitl ZBJ-UI/ i , A . r . , r , £ , l m . : iurr , , iuuv / 4 704 Q1VMD41 V O V / V J U A12C142 283-0201-00 CAP.,FXD,CER DI:27PF,10%,200V 72982 8101B210X7R0270K A12C144 CAP.,FXD,CER DI:0.lUF,20%,50V 281-0775-00 04222 SA205E104MAA...
  • Page 241 A12QI39 iM~U21t>-UU I'K A N i J.&XUK.: b i L . l w i ' i , r n r A12Q222 151-1124-00 TRANSISTOR:JFE, N-CHAN,SI,SEL A12Q225 151-0711-00 TRANSISTOR:SILICON,NPN A12Q233 151-0711-00 TRANSISTOR:SILICON,NPN A12Q234 TRANSISTOR:SILICON,NPN 151-0712-00 A12Q239 151-0216-00 TRANSISTOR:SILICON,PNP A12Q629 TRANSISTOR:SILICON,PNP 151-0188-00 A12Q630A.B SEMICOND DVC SE:MATCHED PAIR FET 151-1042-00 A12Q631...
  • Page 242 J X 1 J U U U J F2942 22229 SPS8224 04713 SPS8224 04713 04713 SPS8223 04713 SPS8803 04713 SPS6868K 01295 SKA5390 S032677 07263 04713 SPS8317 01295 SKA5390 07263 S032677 04713 SPS8317 07263 S032677 04713 SPS8223 04713 SPS8223 04713 SPS8224 01121 CB2405 MFF1816G90002D...
  • Page 243 AIZK148 JO-Ulil-UU b O S b UJ.1Z1 liDU H U Utm,DA,U-Z3W A12R149 315-0101-00 RES. , FXD,CMPSN:100 OHM,5%,0.25W CB1015 01121 A12R203 315-0240-00 RES. , FXD,CMPSN:24 OHM,5%,0.25W 01121 CB2405 A12R205 321-0807-01 RES. ,FXD,FILM:900R OHM,0.5%,0.125W 91637 MFF1816G90002D A12R206 317-0330-00 RES. ,FXD,CMPSN:33 OHM.5%,0.125W BB3305 01121 A12R207 321-1389-01...
  • Page 245 H C i O . , A 1 Z R O O U r a u , v j n r o n . j i J i J * “ U J 1 K J - K J K J u i u i , A12R681 RES.,FXD,CMPSN:2.4K OHM,5%,0.50W...
  • Page 246 01121 EB2425 73138 72-23-0 91637 MFF1816G23200F 91637 MFF1816G25500F 01121 CB1025 CB6825 01121 01121 CB4705 CB2215 01121 CB1015 01121 01121 CB1525 01121 CB6825 01121 CB3925 01121 CB8225 01121 CB8225 91637 MFF1816G442R0F 01121 CB5615 01121 CB9115 91637 MFF1816G13700F 73138 91-84-0 91637 MFF1816G11501F 01121 CB2725 01121...
  • Page 247 8-26 REV AUG 1982...
  • Page 248 f l l iji-uiau-uu nuinoiDlun* ouuiuun , urn A13Q664 151-0190-00 TRANSISTOR:SILICON,NPN 07263 S032677 A13Q690 TRANSISTOR:SILICON,NPN 07263 S032677 151-0190-00 A13R552 315-0510-00 RES.,FXD,CMPSN:51 OHM,5Z,0.25W 01121 CB5105 A13R553 315-0472-00 RES.,FXD,CMPSN:4.7K OHM,5Z,0.25W 01121 CB4725 A13R554 315-0391-00 RES.,FXD,CMPSN:390 OHM,5Z,0.25W 01121 CB3915 A13R555 315-0302-00 RES.,FXD,CMPSN:3K OHM,5%,0.25W 01121 CB3025 A13R556...
  • Page 249 A13R690 315-0512-00 RES.,FXD,CMPSN:5.IK OHM,5%,0.25W CMPSN:5 IK OHM,5%,0.25W A13R693 315-0512-00 RES.,FXD,CMPSN:5.IK OHM,5%,0.25W A13R694 315-0512-00 RES.,FXD,CMPSN:5.IK OHM,5%,0.25W A13R695 315-0512-00 315-0621-00 RES., FXD,CMPSN:620 OHM,5%,0.25W A13R696 315-0621-00 RES., FXD,CMPSN:620 OHM,5%,0.25W A13R697 A13U555 156-1349-00 MICROCIRCUIT,LI:DUAL INDEP DIFF AMPL 156-0205-00 A13U585 MICROCIRCUIT,DI:QUAD 2-INPUT NOR GATE MICROCIRCUIT, LI:XSTR ARRAY A13U648 156-1381-00 A13U665...
  • Page 250 01121 CB5125 CB5125 01121 01121 CB5125 01121 CB5125 01121 CB6215 01121 CB6215 02735 CA3054 04713 MC10102 (P OR L) 02735 CA3096AE-17 01295 SN74LS00(N OR j) 01295 SN74LS00 01295 SN74LS00CN OR J) 01295 SN74LS00 80009 156-0385-00 01295 SN74LS04 SN74LS08(N OR J) 01295 SN74LS08NP3 01295...
  • Page 251 A18CR931 152-0061-00 XBUZ2UUU SfcMIUUND Utvioa: SiL,lU\JH, 1 / 3V , u/urm A18CR933 XB022000 SEMICOND DEVICE:RECT,SI,600V,3A,FAST 152-0661-00 A18E933 CORE,EM:TOROID,FERRITE,0.375 OD X 0.187 276-0640-00 XB022000 A18L937 108-0422-00 XB022000 COIL,RF: FIXED,82UH A18L938 108-0422-00 XB022000 COIL,RF:FIXED,82UH A18P801 131-1048-00 TERM.QIK DISC:CKT BD MT,0.11 X 0.02 XB022000 TERM.QIK DISC:CRT BD MT,0.U X 0.02 A18P802...
  • Page 252 \J f i U J r u n i i u i 04713 MR856 00779 1-480304-0 80009 108-0422-00 108-0422-00 80009 61134-1 00779 00779 61134-1 00779 61134-1 00779 61134-1 01295 SKB3334 151-0432-00 80009 01295 SKB3334 04713 STP3002 03508 C106B2X283 01121 CB5125 01121 CB5125 CB5615...
  • Page 253 REV AUG 1982 8-30...
  • Page 254 A19R939 J U 8 - U J U J - U U B U 1U 1U U K B S . ( f A U ^ W U U U n n , 3 A , 3 w A19RT935 307-0125-00 B010100 B021999X RES..THERMAL:500 OHM,10%,25 DEG C A19VR933...
  • Page 255 50157 2D1595 80009 152-0268-00 80009 152-0286-00 04713 SZG35009K3 8-31...
  • Page 256 3540S-91-202 R658 311-1183-01 B017000 RES.,VAR, WW:PNL,2K OHM,5%,2W 32997 80009 154-0838-00 V870 154-0838-00 ELECTRON TUBE:CRT,T4652-31-2 8-32 REV AUG 1982...
  • Page 257 Capacitors = Values one or greater are in picofarads (pF). Values less than one are in microfarads Other ANSI standards that are used in the preparation of diagrams by Tektronix, Inc. are: Resistors = Ohms (Q). The information and special symbols below may appear in this manual.
  • Page 258 2215 Service identify component . Locate the Circuit Board Illustration 2. Determine the Circuit Number 3. Locate the Component on the Schematic Diagram mounted on a circuit board and Under the SCHEM LOCATION column, read the grid to locate that component in the...
  • Page 259 Q LZZ fr-6 Old IAIVH9VIO >IOOia...
  • Page 260 2 2 1 5 Service TEST WAVEFORM AND VOLTAGE SETUPS WAVEFORM MEASUREMENTS Changes to the control settings for specific waveforms are noted at the beginning of each set of waveforms. Input signals and hookups required are also indicated, if needed, for each set of waveforms. On the left-hand pages preceding the schematic diagrams are test waveform illustrations that are intended to aid in troubleshooting the instrument.
  • Page 261 Resistance values significantly lower may indicate shorted components in the load. Values will vary between instruments. Always set the POWER switch to OFF before soldering or unsoldering service jumpers or other components and before attempting to measure component resistance values. POWER DISTRIBUTION 2215...
  • Page 262 T R /V C -E R O T A T I O N PfeOOC Z Z I 5 ^sab-'io CIRCUIT BO AR D IN T E R C O N N E C T IO N S R E V A P R I 9 & ? .
  • Page 263 2 2 1 5 Service A 1 2 —A T T E N U A T O R /S W E E P B O A R D CIRCUIT SCHEM CIRCUIT SCHEM CIRCUIT SCHEM CIRCUIT SCHEM CIRCUIT SCHEM CIRCUIT SCHEM NUMBER NUMBER NUMBER...
  • Page 264 CH 1 & CH 2 A TTE N U A TO R S A SSEM B LY A l l SCHEM BOARD CIRCUIT SCHEM BOARD CIRCUIT SCHEM BOARD CIRCUIT SCHEM BOARD CIRCUIT LOCATION LOCATION NUMBER LOCATION LOCATION NUMBER LOCATION LOCATION NUMBER LOCATION LOCATION...
  • Page 265 ) a i a v i x n o o 2861 ddV A3d pjeoq uje|/\|—OLV Z.-6 9Jn6jj 898SO 326 0 i2 £ a 693d 9 0 9 0 298SO L260 809 0 1 V 6 ^ -9 2 9 C Ir IseaA £d 893d...
  • Page 266 A 1 0 - M A IN BOARD (CONT) SCHEM CIRCUIT SCHEM CIRCUIT SCHEM CIRCUIT SCHEM CIRCUIT SCHEM CIRCUIT SCHEM CIRCUIT CIRCUIT SCHEM NUMBER NUMBER NUMBER NUMBER NUMBER NUMBER NUMBER NUMBER NUMBER NUMBER NUMBER NUMBER NUMBER NUMBER W 1001 -7 R373 R485 R763...
  • Page 267 2215 Service Figure 9-8. Circuit view of A 10—Main board. REV APR 1982...
  • Page 268 CH 1 & CH 2 VERTICAL PREAMPS < > ASSEMBLY A10 CIRCUIT SCHEM BOARD CIRCUIT SCHEM BOARD CIRCUIT SCHEM BOARD CIRCUIT SCHEM BOARD NUMBER LOCATION LOCATION NUMBER LOCATION LOCATION LOCATIOI NUMBER LOCATION NUMBER LOCATION LOCATION Q 173 R193 R296 Cl 67 Q 177 R194 R297...
  • Page 269 2215 Service 2215 CONTROL SETTINGS DC Voltoge -W 638 P200Q C>-<D VERTICAL MODE CH 1 lO s C M ! 50 ir-> ! : I Icoc C O C O O O I C O i C O TRIGGER MODE...
  • Page 270 Parts List for serial number ranges. CHASSIS R399 CHASSIS DL350 R398 CHASSIS A1 1 PARTIAL FR ONT PANEL BOARD CHANNEL SWITCH 6 VERTICAL OUTPUT <|> 2215 3 S 2 « = - 3 3 R E V O C T 1981...
  • Page 271 TRIGGER ASSEM B LY A 1 0 BOARD CIRCUIT SCHEM BOARD SCHEM CIRCUIT SCHEM BOARD CIRCUIT SCHEM CIRCUIT BOARD NUMBER LOCATION LOCATION LOCATION LOCATION NUMBER LOCATION LOCATION NUMBER LOCATION LOCATION NUMBER R472 TP444 C408 Q605 R473 C410 R474 U421A C412 R408 R476 U421B...
  • Page 272 2215 Service 2215 CONTROL SETTINGS DC Voltages HORIZONTAL MODE A TRIGGER MODE AUTO AUTO IN T E N S IT Y M id r a n g e A S E C /D IV 0 .1 AC Waveforms VERTICAL MODE...
  • Page 273 SWEEP GENERATOR & LOGIC < 5 ASSEMBLY A10 CIRCUIT SCHEM BOARD CIRCUIT SCHEM BOARD CIRCUIT SCHEM BOARD NUMBER LOCATION LOCATION NUMBER LOCATION LOCATION NUMBER LOCATION LOCATION C602 P6001-1 *4: R668 C604 P 6 0 0 1 -4 *t R670 C606 P6001-5*£...
  • Page 274 2215 Service 2215 CONTROL SETTINGS DC VOLTAGES HORIZONTAL MODE AUTO INTEN SITY M id ra n g e A S E C /D IV 0 .1 A TRIGGER MODE AUTO AC-GND-DC AC Waveforms HORIZONTAL MODE A S E C /D IV 0 .1...
  • Page 275 AUTO INTENSITY & Z AXIS < 6 A SSEM BLY A 1 0 SCHEM BOARD BOARD CIRCUIT SCHEM BOARD CIRCUIT CIRCUIT SCHEM BOARD CIRCUIT SCHEM NUMBER LOCATION LOCATION NUMBER LOCATION LOCATION NUMBER LOCATION LOCATION NUMBER LOCATION LOCATION C603 CR837 R813 R849 C605 CR844...
  • Page 276 2215 Service 2215 CONTROL SETTINGS DC Voltages HORIZONTAL MODE A TRIGGER MODE AUTO AC-GND-DC AC Waveforms HORIZONTAL MODE VAR HOLDOFF ( f u l l y ccw ) AUTO A TRIGGER MODE AC-GND-DC ( b o t h ) Horizontal POSITION start of trace at extreme left of vertical line.
  • Page 277 □ c _____ i O _____ L -------- — I X Y A M PLIFIER / H O R IZ O UTPUT < 7 ASSEMBLY A10 SCHEM CIRCUIT BOARD CIRCUIT BOARD SCHEM CIRCUIT SCHEM BOARD CIRCUIT SCHEM BOARD NUMBER LOCATION LOCATION NUMBER LOCATION...
  • Page 278 I N I T IM IN G SWITCH < 8 ASSEMBLY A l l CIRCUIT SCHEM BOARD CIRCUIT SCHEM BOARD NUMBER LOCATION LOCATION NUMBER LOCATION LOCATION J2000-7 J20 00-8 P a r t ia l A 1 1 a ls o s h o w n o n d ia g ra m s 1, 2 , 3 , 4 , 5 , 6, 9 a n d 10.
  • Page 279 2 2 1 5 Service 2215 CONTROL SETTINGS AC W aveform s DC Voltages POW ER SUPPLY. PROBE A D J U S T & C R T W A R N IN G P re re g u la to r...
  • Page 280 POWER SUPPLY, PROBE A D J U S T & C R T (CONT) ASSEMBLY A l l CIRCUIT SCHEM BOARD CIRCUIT SCHEM SCHEM BOARD CIRCUIT SCHEM BOARD BOARD CIRCUIT NUMBER LOCATION LOCATION NUMBER LOCATION LOCATION LOCATION LOCATION LOCATION NUMBER LOCATION NUMBER C531...
  • Page 281 2215 Service 2215 CONTROL SETTINGS □ DC Voltages AC Waveforms A TRIGGER NORM (sweep A S E C /D IV 50 ps n o t r u n n i n g B S E C /D IV 5 ps...
  • Page 282 2215 Service THIS PAGE INTENTIONALLY LEFT BLANK...
  • Page 283 2215 Service ALTERNATE B SWEEP <10, A SSEM BLY A IO CIRCUIT SCHEM BOARD CIRCUIT SCHEM BOARD CIRCUIT BOARD SCHEM SCHEM BOARD CIRCUIT NUMBER LOCATION LOCATION NUMBER LOCATION LOCATION NUMBER LOCATION LOCATION LOCATION NUMBER LOCATION C 564 R607 W 1 001-25...
  • Page 284 ALTERNATE B SWEEP (CONT) ASSEMBLY A 13 CIRCUIT SCHEM BOARD CIRCUIT SCHEM BOARD CIRCUIT SCHEM BOARD CIRCUIT SCHEM BOARD NUMBER LOCATION LOCATION NUMBER LOCATION LOCATION NUMBER LOCATION LOCATION NUMBER LOCATION l o c a t io n C554 R579 U555A W661 C556 R581...
  • Page 285 2215 Service R3 6 6 R 8 87 A 1 0 —M A IN BOARD A D JU STM EN T LOCATIONS REV OCT 1981...
  • Page 286 2 2 1 5 S ervice R 2 46 R 245 R 2 38 C 7 3 4 R 1 46 R 145 R 138 CH 2 X 10 C H I C H I X 10 C H I NEARITY X 1 0 VERT...
  • Page 287 GENERAL NOTES Us© s c h e m a t i c d i a g r a m s ) t h e o v e r a l l b l o c k d i agram > c i r c u i t b o a r d i 11us t r a t i ons >...
  • Page 288 2 2 1 5 S ervice 3826-44...
  • Page 289 GENERAL NOTES Use s c h e m a t i c d i a g r a m s > t h e o v e r a l l b l o c k d i a g r a m > c i r c u i t b o a r d i l l u s t r a t i o n s ) c i r c u i t...
  • Page 290 3826-45A...
  • Page 291 Change information, if any, is located at the rear of this Attacmng parts always appear in me s a m e in d e n t a t io n as the item it mounts, while the detail parts are indented to the right. manual.
  • Page 292 SHAKEPROOF DIVISION 79807 WROUGHT WASHER MFG. CO. 80009 TEKTRONIX, INC. 82389 SWITCHCRAFT, INC. 83385 CENTRAL SCREW CO. 89663 REESE, J. RAMSEY, INC. 93907 TEXTRON INC. CAMCAR DIV 95987 WECKESSER CO., INC. 10-2...
  • Page 293 ELGIN, IL 60120 ST. CHARLES ROAD MILWAUKEE, WI 53207 2100 S. 0 BAY ST. BEAVERTON, OR 97077 P 0 BOX 500 5555 N. ELSTON AVE. CHICAGO, IL 60630 2530 CRESCENT DR. BROADVIEW, IL 60153 71 MURRAY STREET NEW YORK, NY 10007 600 18TH AVE ROCKFORD, IL 61101 4444 WEST IRVING PARK RD.
  • Page 294 KNOB:GY,0.127 ID X0.392 OD X 0.4 366-1701-01 B010405 RES,VAR,NONWIR:(SEE R647 REPL) ---- (ATTACHING PARTS) NUT,PLAIN,HEX:0.25-32 X 0.312 INCH,BRS 210-0583-00 210-0940-00 WASHER, FLAT:0.25 ID X 0.375 INCH OD,STL WASHER,LOCK:INTL,0.476 ID X 0.60"OD STL 210-0021-00 XB010405 — — — * — — — ■1 9 ---- CONNECTOR,RCPT,:(SEE J1001,J2001 REPL)
  • Page 295 80009 366-1701-01 73743 2X20317-402 79807 78189 1222-01-00-0541C 80009 210-0255-00 80009 384-1575-00 80009 358-0550-00 71279 450-4252-01-0310 80009 366-1031-03 366-1838-01 80009 80009 358-0640-00 80009 366-1405-08 80009 366-1840-00 80009 366-1850-00 05129 461-S-70 644R 89663 80009 333-2679-00 80009 366-2013-00 348-0660-00 80009 80009 386-4444-00 01536 01536 80009 377-0512-00...
  • Page 296 -------------- (JK.T BOARD A S S Y IN C L U D E S : 4 • TERMINAL, PIN: (SEE AllJlOOO RE PL) 10 . TERMINAL, PIN: (SEE A11J2001 RE PL) . SWITCH,SLIDE:(SEE A11S101,S201,S305,S315, --------- . . S317,S401,S440,S611,S650 REPL) 361-1081-00 1 .
  • Page 297 80009 361-1081-00 80009 407-2584-00 01536 80009 343-0089-00 80009 441-1535-00 01536 93907 83385 80009 342-0582-00 80009 343-1025-00 80009 344-0154-03 REV MAY 1982...
  • Page 298 2215 OSCILLOSCOPE REV FEB 1982...
  • Page 299 2215 OSCILLOSCOPE...
  • Page 300 H$)A19 REV FEB 1982...
  • Page 301 Jj/-29i5-UU 5 t i i H L , u , E , L i ! , ^ : A L i E . K i m j . E , a i v t u r (ATTACHING PARTS) ■1 6 211-0304-00 SCREW, MACHINE:4-40 X 0.312,PNH 129-0906-00 SPACER,POST:0.685 L W/4-40 INT &...
  • Page 302 ouuuy ~ z . y i j - u u 01536 80009 129-0906-00 83385 22526 48283-029 01536 01536 73743 80009 337-2945-00 80009 361-1047-00 05820 201-AB 2224B 13103 80009 337-2922-00 80009 200-2735-00 343-0088-00 80009 00779 61134-1 01536 73743 12161-50 80009 343-0969-00 01536 83385 10-5...
  • Page 303 SCREW,TAPPING:6-32 X 0.437 TYPE C 213-0882-00 01536 1 MOUNT,RE SILIE NT: CRT,REAR 426-1766-00 80009 426-1766-00 136-0202-04 1 SKT,PL-IN ELEK:ELECTRON TUBE,14 CONT 80009 136-0202-04 1 LABEL:CRT,ADHESIVE BACK 334-1379-00 80009 334-1379-00 1 MARKER,IDENT:CRT WARNING 334-1951-00 334-1951-00 80009 337-2774-00 1 SHIELD,ELEC: CRT,STEEL 80009 337-2774-00 386-4443-00 1 SUPPORT,SHIELD:CRT,FRONT,PLASTIC...
  • Page 305 10-7 REV MAY 1982...
  • Page 306 175-4232-00 1 CA ASSY,SP,ELEC: AWG,4. 80009 175-4232-00 L ,R IB B O N (FROM All TO R647) 10-8 ADD FEB 1982...
  • Page 307 016-0677-00 016-0677-00 . POUCH,ACCESSORY: 80009 386-4674-00 . . PLATE,MOUNTING:ACCESSORY POUCH 386-4674-00 . . PLATE,REINF:ACCESSORY POUCH 80009 386-2370-00 386-2370-00 . . SCREW,MACHINE:8-32 X 0.312 INCH,TRH STL 77250 212-0068-00 . . NUT,PL,EXT WSHR:8-32 X 0.344 HEX,NYLON 23050 220-0736-00 2215 OSCILLOSCOPE AUG 1982...
  • Page 309 A sing le change may a ffe ct several sections. S ince the change in fo rm a tio n sheets are carrie d in the m anual u n til all changes are p erm a n ently entered, som e d u p lic a tio n may o ccu r.
  • Page 311 This material provides the additional miormation required to support those instruments which have been produced with the Preregulator circuit board. When servicing your instru­ ment, use the appropriate text, schematic diagram, board charts, and dollies applicable to your particular instrument. TEXT CORRECTIONS Page 3-25 First paragraph following the POWER SUPPLY heading...
  • Page 313 i l d - L J - i i f c ? ± ^ u i i i i u i i - m u i . c i u o j . ^ t - m j . j t »...
  • Page 315 With Q933 off, C933 charges to the output voltage of the Power Input circuit. When Q933 turns on, current through the FET will come from the winding connected to pins 1 and 2 of T933 and from C933. Current to C933 is supplied by the winding connected to pins 4 and 5 of T933.
  • Page 316 the inverter part ADD: NOTE following paragraph applies only to instruments having Current Limit board. Page 5-4 WARNING following part a REPLACE WITH: WARNING avoid electric shock instrument damage when checking either Head Room Voltage or the Preregulator Output Voltage, digital voltmeter that is isolated from...
  • Page 318 following adjustment is only applicable to instruments having the Current Limit board (A19). ADJUST-Head Room Voltage Adjust (R952) for +4.3 V. Page 6-13 Cathode-Ray Tube procedure, after step 3 ADD: For instruments with the Preregulator board (A18), remove two nuts securing the shield at the back of the crt and remove the shield.
  • Page 319 installed. appropriate board-removal procedure for your particular instrument. Page 6-18 After the Current Limit Circuit Board procedure A D D : Preregulator Circuit Board To remove the Preregulator circuit board, perform the following steps: Remove the High-Voltage shield (see the "High-Voltage Shield"...
  • Page 321 Reinstall the securing screw at the top of the Preregulator board (removed in step 3). Reinstall the two bracket screws (removed in step 2). Reinstall the High-Voltage shield (see the "High-Voltage Shield" reinstallation procedure) . Page...
  • Page 322 283-0335-00 A18C910 A18C913 290-0770-00 A18C920 281-0852-00 281-0775-00 A18C921 281-0772-00 A18C923 281-0820-00 A18C925 281-0809-00 A18C929 A18C933 285-0932-00 A18C934 290-0831-00 283-0208-00 A18C935 152-0750-00 A18CR904 A18CR913 152-0061-00 A18CR931 152-0061-00 A18CR933 152-0661-00 276-0640-00 A18E933 A18L937 108-0422-00 A18L938 108-0422-00 131-1048-00 A18P801 A18P802 131-1048-00 131-1048-00 A18P803 A18P804 131-1048-00 151-0164-00...
  • Page 323 CAP.,FXD,CER Dl:0.1 UF,20%,600V C A P ., FXD.ELCTLT: 10OUF,+ 5 0 -1 0%,25V CAP.,FXD,CER DI:1800PF,10% ,100V CAP.,FXD,CER Dl:0.1 UF,20%,50V CAP.,FXD,CER DI:4700PF,10% ,100V CAP.,FXD,CER DI:680PF,10% ,50V CAP.,FXD,CER DI:200PF,5% ,100V C AP.,FXD,PLASTIC: 1UF,10%,400V CAP.,FXD,ELCTLT:470UF, + 50-10% ,50V CAP.,FXD,CER DI:0.22UF,10% ,200V SEMICOND DVC,DI:RECT BRIDGE,600V,3A,FAST REC SEMICOND D VC ,D I:SW ,SILICO N,175V,0.1 A SEMICOND D VC ,D I:SW ,SILICO N,175V,0.1 A SEM ICOND DVC,DI:RECT,SILICON,600V,3A,FAST REC...
  • Page 324 « IOn3£3 A18R931 315-0302-00 308-0843-00 A18R933 A18R934 308-0441-00 A18R935 315-0121-00 A18R936 315-0470-00 A18R937 301-0822-00 A18RT901 307-0350-00 A18RT902 307-0350-00 A18T901 120-1449-00 A18T907 120-1441-00 A18T933 120-1439-00 A18U920 156-1627-00 A18VR917 152-0166-00 152-0255-00 A18VR935 the A10 circuit board assembly. Remove from REMOVE: A10C912 281-0770-00 290-0188-00 A10C915 A10C917...
  • Page 325 RES.,FXD,CM PSN:3K OHM ,5% ,0.25W RES.,FXD,W W :0.2 0H M ,5% ,1W RES.,FXD,W W :3 OHM,5% ,3W RES.,FXD,CM PSN:120 OHM,5% ,0.25W RES.,FXD,CM PSN:47 OHM ,5% ,0.25W RES.,FXD,CPSN:8.2K OHM,5% ,0.5W RES.,THERM AL:7.5 OHM,10% ,3.9% /DEG C RES.,THERM AL:7.5 OHM ,10% ,3.9% /DEG C TRANSFORMER: TRAN SFO R M ER :R F:PO T CORE TRANSFORMER :RF:...
  • Page 326 A10R926 301-0471-00 A10R952 311-1562-00 A10R953 315-0361-00 120-1384-00 A10T925 214-0579-02 A10TP915 A10TP920 214-0579-02 A10TP921 214-0579-02 A10U931 156-0885-00 152-0304-00 A10VR913 A10VR914 152-0149-00 A10VR915 152-0149-00 A10VR938 152-0788-00 ADD: A10R953 315-0203-00 A10W 952 176-0122-01 REMOVE: F901 159-0021-00 L925 108-1096-00 ADD: F901 159-0019-00 Page...
  • Page 327 RES.,FXD,CM PSN:470 OHM,5% ,0.50W RES.,VAR ,N 0NW IR:2K OHM ,20% ,0.50W RES.,FXD,CM PSN:360 OHM,5% ,0.25W TRAN SFO R M ER ,R F:TO RO ID ,2 WINDS TERM ,TEST P O IN T E R S CD PL TERM ,TEST P O IN T E R S CD PL TERM ,TEST P O IN T E R S CD PL MICROCIRCUIT,LLOPTO ELECTRO NIC ISOLATOR SEMICOND DEVICE:ZENER,0.4W ,20V,5%...
  • Page 328 2 2 1 5 Service C345 - ,X335ur.. P8740 R 8 8 7 \ 'R 8 7 0 ' C R345 . : 8335 7-. R394 . ' ”0.377"' Q376 /R33T 4 ; r - ' R370, 7 0 3 8 3 4 4 R378 .
  • Page 329 A 1 0 —M A IN BOARD SCHEM CIRCUIT SCHEM CIRCUIT SCHEM CIRCUIT SCHEM CIRCUIT SCHEM CIRCUIT SCHEM CIRCUIT NUMBER NUMBER NUMBER NUMBER NUMBER NUMBER NUMBER "NUMBER NUMBER NUMBER NUMBER NUMBER Cl 67 C610 C985 P2011-1 Q779 R287 C614 C170 C990 P 2011-2 Q 780...
  • Page 330 A 1 0 — M A IN B O A R D (C O N T ) SCHEM SCHEM CIRCUIT SCHEM CIRCUIT SCHEM CIRCUIT SCHEM CIRCUIT SCHEM CIRCUIT CIRCUIT NUMBER NUMBER NUMBER NUMBER NUMBER NUMBER NUMBER NUMBER NUMBER NUMBER NUMBER NUMBER R950 R391...
  • Page 331 2 2 1 5 Service Chassis-mounted components have no Assembly Number prefix— see end of Replaceable Electrical Parts List. P8710 3 8 2 6 - 5 8 Figure 9-8A. Circuit view of A IO —Main board.
  • Page 332 2 2 1 5 Service A 1 8 — P R E R E G U L A T O R B O A R D CIRCUIT SCHEM CIRCUIT SCHEM CIRCUIT SCHEM NUMBER NUMBER NUMBER NUMBER NUMBER NUMBER C903 L937 R921 C904 L938...
  • Page 334 150 mV PROBE G RO UND LEAD ON PIN 4 OF U920 100 mV 175 V PROBE G RO UND LEAD ON PIN 4 OF U920 PROBE G RO UND LEAD ON PIN 4 OF U920 - 1 7 5 V 3 8 2 6 - 5 6 C l 1/182 Page 14 of 16...
  • Page 335 noo / vvsroo C945 P7001-3 R940 W 966 C947 P7001 -4 R941 W 968 C951 P8710 1 R942 W 975 C956 P8710-2 R945 W 976 C957 P8710-3 R946 W 982 C961 P 8710-4 R947 W 985 C965 P8710-5 W 986 R948 C971 P9000-1...
  • Page 337 POW ER SUPPLY, PROBE A D J U S T & CR T (CONT) ASSEMBLY A l l CIRCUIT SCHEM BOARD CIRCUIT SCHEM BOARD SCHEM BOARD CIRCUIT SCHEM BOARD CIRCUIT NUMBER LOCATION LOCATION LOCATION NUMBER LOCATION LOCATION NUMBER LOCATION LOCATION NUMBER LOCATION C531...
  • Page 338 1 — W | ~ \J\J 1 U J J U A10C990 285-1184-00 B018550 CAP,FXD, MTLZD: 0.01UF,20%,4000V A10C995 285-1184-00 B018550 CAP,FXD, MTLZD: 0.01UF,20%.4000V A10C992 285-1184-00 B018550 CAP,FXD, MTLZD: 0.01UF,20%,4000V 156-0728-02 A10U305 B019250 MICROCIRCUIT,DI: QUAD 2-INP STATE W/OC A10U310 156-0721-02 B012543 MICROCIRCUIT,DI: QUAD 2-INP NAND SCHMITT A10U315...
  • Page 340 u j. H u r m r j r u i n f in o u r r i _ , i rnvjDiL a uiu u u o i CHANGE: C990 & C995 from 0.02UF to 0.01UF C992 from 0.02UF to 0.01UF Page...
  • Page 341 PC37 PC39...
  • Page 342 A12CR680 152-01A1-02 SEMICOND DVC,DI: SI,30V B025695 ADD: 281-0808-00 CAP,FXD,CER DI: 7PF,20%,100V A10C619 B025695 A10C67A 281-0808-00 CAP,FXD,CER DI: 7PF,20%,100V B025695 151-0199-00 A10Q502 TRANSISTOR: PNP,SI B025695 151-0A2A-00 A10Q505 TRANSISTOR: NPN,SI B025695 A10R500 315-0203-00 RES,FXD,CMPSN: 20K 0HM,5%,0.25W B025695 A10R502 315-0203-00 RES,FXD,CMPSN: 20K 0HM,5%,0.25W B025695 151-0A2A-00 A12Q626...
  • Page 344 DIAGRAM <5> SWEEP GENERATOR & LOGIC CHANGE— C645 (Location 4B) to a 2.2 pF capacitor. — C647 (Location 4B) to an 1800 pF capacitor. REMOVE— CR626, CR630; ADD— C619, Q626; CHANGE— R619, R623 (see partial schematic) . DIAGRAM <§)> TIMING SWITCH CHANGE—...

Table of Contents