Instruction Manual WFM 300A Component/Composite Waveform Monitor (SN B020000 and Up) 070-7636-04 Warning The 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. Refer to all safety summaries prior to performing service.
Copyright © Tektronix, Inc. All rights reserved. Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supercedes that in all previously published material. Specifications and price change privileges reserved. Printed in the U.S.A. Tektronix, Inc., P.O. Box 1000, Wilsonville, OR 97070–1000 TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.
Contacting Tektronix Product Support For application-oriented questions about a Tektronix measurement product, call toll free in North America: 1-800-TEK-WIDE (1-800-835-9433 ext. 2400) 6:00 a.m. – 5:00 p.m. Pacific time Or contact us by e-mail: tm_app_supp@tek.com For product support outside of North America, contact your local Tektronix distributor or sales office. Service Support Contact your local Tektronix distributor or sales office.
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General Safety Summary Review the following safety precautions to avoid injury and prevent damage to this product or any products connected to it. To avoid potential hazards, use this product only as specified. Only qualified personnel should perform service procedures. To Avoid Fire or Personal Injury Use Proper Power Cord. Use only the power cord specified for this product and certified for the country of use. Connect and Disconnect Properly.
WFM 300A General Safety Summary Symbols and Terms Terms in this Manual. These terms may appear in this manual: WARNING. Warning statements identify conditions or practices that could result in injury or loss of life. CAUTION. Caution statements identify conditions or practices that could result in damage to this product or other property. Terms on the Product. These terms may appear on the product: DANGER indicates an injury hazard immediately accessible as you read the marking.
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WFM 300A — SPECIFICATIONS Table 1–15: Certifications and compliances Category Standards or description EC Declaration of Conformity – EMC 1 Meets intent of Directive 89/336/EEC for Electromagnetic Compatibility.
WFM 300A — SPECIFICATIONS Table 1–15: Certifications and compliances (cont.) Category European Union Compliance Additional Compliance Standards or description Low Voltage Directive 73/23/EEC, amended by 93/69/EEC EN 61010-1 Safety requirements for electrical equipment for measurement, control, and laboratory use. IEC61010-1 Safety requirements for electrical equipment for measurement, control, and laboratory use.
Service Safety Summary Only qualified personnel should perform service procedures. Read this Service Safety Summary and the General Safety Summary before performing any service procedures. Do Not Service Alone. Do not perform internal service or adjustments of this product unless another person capable of rendering first aid and resuscitation is present. Disconnect Power. To avoid electric shock, switch off the instrument power, then disconnect the power cord from the mains power.
WFM 300A — Service Safety Summary S– 2
WFM 300A — THEORY OF OPERATION 4– 24
Section 8 Replaceable Electrical Parts This section contains a list of the components that are replaceable for the WFM 300A. Use this list to identify and order replacement parts. There is a separate Replaceable Electrical Parts list for each instrument. Parts Ordering Information Replacement parts are available from or through your local Tektronix, Inc., Field Office or representative.
Replaceable Electrical Parts Column Descriptions Component No. (Column 1) The component circuit number appears on the diagrams and circuit board illustrations, located in the diagrams section. Assembly numbers are also marked on each diagram and circuit board illustration, in the Diagram section and on the mechanical exploded views, in the mechanical parts list. The component number is obtained by adding the assembly number prefix to the circuit number. Example a.
Replaceable Electrical Parts Cross Index – Mfr. Code Number To Manufacturer Mfr. Code.
Replaceable Electrical Parts Mfr. Code.
Replaceable Electrical Parts Mfr. Code.
Replaceable Electrical Parts Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Number Part Number Effective Discontinued A1 A1 A1 A1 A1 A1 A1 A2 A3 A3 A3 A3 A3A1 671–2890–01 671–2890–02 671–2890–03 671–2890–04 671–2890–05 671–2890–06 671–2890–07 671–1354–00 672–0278–09 672–0278–10 672–0278–11 672–0278–12 671–1365–00 A3A1 671–1358–00 A3A2 A4 A4 A4 A5 671–1796–00 671–1357–02 671–1357–03 671–1357–04 671–1356–04 A1 A1 A1 A1 A1 A1 A1 A1C1 A1C2 A1C3 A1C4 A1C5 A1C6 A1C7 671–2890–01
Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Number Part Number Effective Discontinued A1C24 290–1310–00 A1C25 A1C27 A1C28 A1C29 281–0775–01 281–0775–01 281–0775–01 290–1267–00 A1C30 290–1267–00 A1C31 290–1267–00 A1C32 290–1267–00 A1C33 290–1310–00 A1C34 290–1310–00 A1C35 290–1267–00 A1C36 290–1267–00 A1C37 290–1267–00 A1C38 290–1267–00 A1C39 A1C40 A1C41 A1C42 281–0775–01 281–0772–00 281–0563–00 290–1267–00 A1C43 A1C44 A1C45 A1C46 A1C47 A1C48 A1C49 A1C50
Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Number Part Number Effective Discontinued A1J2 131–4794–00 A1J3 A1J4 A1J6 A1L1 131–5337–00 131–3392–00 119–1946–00 108–1412–00 A1L2 108–1412–00 A1L3 108–1412–00 A1L4 108–0205–00 A1Q1 A1Q2 A1Q3 A1Q4 A1Q5 A1Q6 151–0749–00 151–0190–00 151–0350–03 151–0347–02 151–0350–03 151–0476–00 214–3848–00 A1Q7 A1Q8 A1Q9 151–0190–00 151–0190–00 151–1286–00 210–0406–00 211–0008–00 214–3841–00 A1Q10 A1Q11 A1R1 A1R2 A1R3 A1R4 A1R5 A1R7 A1R
Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Number Part Number Effective Discontinued A1R36 A1R37 A1R38 322–3222–00 322–3034–00 315–0226–01 A1R39 A1R40 A1R41 A1R42 A1R43 A1R44 A1R45 A1R46 A1R47 A1R48 A1R49 A1R50 A1R51 A1R52 A1R53 A1R54 A1R55 A1R55 A1R56 A1R57 A1R58 A1R59 A1R60 A1R61 A1R62 A1R63 A1R64 A1R65 A1R66 A1R67 A1R68 A1R69 A1R70 A1R71 A1R72 A1R73 A1R74 A1R75 A1R76 A1R76 A1R77 A1R77 A1R78 A1R78 A1R79 A1R80 A1R81 A1R82 A1R83 A1R84 A1R84 A1R85 A1R85 A1R86 315–0471–03 315
Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Number Part Number Effective Discontinued A1R87 A1R88 A1R89 A1R90 A1R91 A1R92 A1R93 A1R94 A1R95 A1R95 A1R96 A1R97 A1R98 A1R99 A1R101 A1R102 A1R103 A1T1 322–3034–00 322–3222–00 307–0746–00 305–0242–00 306–0104–00 306–0104–00 322–3402–00 322–3402–00 322–3260–00 322–3256–00 322–3356–00 322–3222–00 322–3289–07 311–2239–00 322–3068–00 308–0290–00 322–3452–00 120–1695–00 A1T2 A1T3 120–1945–00 120–1944–00 A1U1 A1U2 A1U3 A1U4 A1U5 152–09
Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Number Part Number Effective Discontinued A1CR23 A1CR24 A1CR24 A1CR25 A1CR26 A1CR27 A1CR28 A1CR29 A1CR30 A1CR31 A1DS1 A1DS2 A1DS3 A1DS4 A1TP1 152–1165–00 152–0661–00 152–1165–00 152–0141–02 152–0141–02 152–0400–00 152–0141–02 152–0400–00 152–0141–02 152–0400–00 150–0050–00 150–0050–00 150–0050–00 150–0050–00 214–4085–00 A1TP2 214–4085–00 A1VR1 A1VR2 A1VR3 A1VR4 156–1631–01 152–0195–00 152–0195–00 152–0149–00 A2 A2J295 671–1354–
Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Number Part Number Effective Discontinued A2S143 260–2300–00 366–0616–00 A2S209 260–2300–00 366–0616–00 A2S220 260–2300–00 366–0616–00 A2S242 260–2300–00 366–0616–00 A2S243 260–2300–00 366–0616–00 A2S309 260–2300–00 366–0616–00 A2S320 260–2300–00 366–0616–00 A2S342 260–2300–00 366–0616–00 A2S509 260–2300–00 366–0616–00 A2S510 260–2300–00 366–0616–00 A2S519 260–2300–00 366–0616–00 A2S520 8–12 260–2300–00 Name
Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Number Part Number Effective Discontinued 366–0616–00 A2S530 260–2300–00 366–0616–00 A2DS107 150–1163–00 A2DS108 150–1163–00 A2DS109 150–1163–00 A2DS123 150–1163–00 A2DS124 150–1163–00 A2DS125 150–1163–00 A2DS142 150–1163–00 A2DS143 150–1163–00 A2DS208 150–1163–00 A2DS209 150–1163–00 A2DS220 150–1163–00 A2DS242 150–1163–00 A2DS243 150–1163–00 A2DS307 150–1163–00 A2DS308 150–1163–00 A2DS309 150–1163–00
Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Number Part Number Effective Discontinued 337–3761–00 A3C114 A3C119 A3C156 A3C187 A3C193 A3C197 281–0812–00 281–0775–01 290–0974–03 281–0775–01 281–0799–00 290–0848–00 A3C215 A3C218 A3C242 A3C243 A3C246 A3C255 A3C258 A3C290 A3C297 281–0775–01 281–0775–01 290–0974–03 290–0974–03 281–0775–01 281–0757–00 281–0759–00 281–0775–01 290–0848–00 A3C310 A3C336 A3C338 A3C342 A3C343 A3C348 A3C350 A3C353 A3C354 A3C355 A3C370 A3C379 A3C391 A3C3
Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Number Part Number Effective Discontinued A3C554 A3C568 A3C573 A3C581 281–0775–01 283–0633–01 281–0775–01 281–0756–00 A3C582 A3C584 A3C589 A3C591 A3C594 A3C616 A3C622 A3C624 A3C635 A3C636 A3C644 A3C645 A3C646 A3C647 A3C649 A3C652 A3C672 A3C675 A3C684 A3C685 A3C686 A3C690 A3C692 A3C693 A3C694 A3C720 A3C734 A3C757 A3C763 A3C769 A3C772 A3C790 A3C791 A3C794 A3C796 A3C797 A3C820 290–0782–02 281–0765–00 290–0974–03 281–0775–01 281–0819–0
Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Number Part Number Effective Discontinued A3C869 A3C870 A3C873 A3C875 A3C876 A3C926 283–0625–01 281–0765–00 281–0819–00 281–0763–00 281–0783–00 281–0756–00 A3C928 A3C929 A3C937 A3C946 A3C959 A3C963 A3C989 A3C992 A3C994 A3C997 290–0974–03 283–0934–00 281–0775–01 290–0974–03 290–0974–03 283–0600–01 290–0974–03 281–0775–01 281–0819–00 290–0848–00 A3J131 131–2951–00 210–0001–00 210–0405–00 211–0001–00 A3J154 175–9797–00 A3J158 1
Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Number Part Number Effective Discontinued A3P179 131–4752–00 A3P180 A3P453 131–4865–00 131–3199–00 A3P843 131–3199–00 A3P897 131–3199–00 A3Q121 A3Q167 A3Q191 A3Q214 A3Q221 A3Q222 A3Q256 A3Q263 A3Q350 A3Q351 A3Q352 A3Q355 A3Q358 A3Q393 A3Q397 A3Q415 A3Q432 A3Q433 A3Q434 A3Q445 A3Q463 A3Q464 A3Q465 A3Q466 A3Q470 A3Q471 A3Q483 151–0190–00 151–0207–01 151–0221–08 151–0188–00 151–0188–00 151–0190–00 151–0188–00 151–0190–00 151–020
Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Number Part Number Effective Discontinued A3Q751 A3Q753 A3Q755 A3Q764 A3Q771 A3Q772 A3Q773 151–0347–02 151–0261–00 151–0347–02 151–0198–04 151–0220–00 151–0198–04 151–0211–00 A3Q773 A3Q790 A3Q840 A3Q842 A3Q846 A3Q851 A3Q857 A3Q859 A3Q860 A3Q878 A3Q897 A3Q898 A3Q961 A3Q971 A3Q972 A3Q973 342–0324–00 151–1005–03 151–0198–04 151–0221–08 151–0190–00 151–0916–00 151–0916–00 151–0198–04 151–0198–04 151–0190–00 151–0188–00 151–1059–01 151–
Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Number Part Number Effective Discontinued A3R225 A3R239 A3R242 A3R243 A3R253 A3R254 A3R255 A3R257 A3R258 A3R262 A3R263 A3R264 A3R267 A3R273 A3R274 A3R288 322–3239–00 322–3172–00 322–3258–00 322–3258–00 322–3222–00 322–3258–00 315–0106–00 322–3289–00 322–3318–00 322–3289–00 322–3289–00 322–3385–00 322–3001–00 322–3001–00 322–3001–00 311–2232–00 A3R289 A3R292 A3R293 A3R295 A3R297 A3R314 A3R315 A3R316 A3R317 A3R318 A3R319 A3R329 A3R333
Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Number Part Number Effective Discontinued A3R391 A3R392 A3R395 A3R396 A3R397 A3R398 A3R399 A3R414 A3R415 A3R416 A3R425 A3R428 A3R428 A3R428 A3R428 A3R429 A3R430 A3R435 322–3273–00 322–3210–00 322–3250–00 322–3097–00 315–0106–00 322–3306–00 322–3306–00 322–3030–00 322–3275–00 322–3299–00 322–3273–00 311–2348–00 366–0649–00 376–0051–01 384–1065–00 322–3193–00 322–3193–00 311–2226–00 A3R436 A3R439 A3R444 A3R445 A3R446 A3R447 A3R448 A3R
Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Number Part Number Effective Discontinued A3R485 A3R487 A3R488 A3R489 A3R490 322–3189–00 322–3239–00 322–3281–00 322–3239–00 311–2232–00 A3R491 A3R492 A3R493 A3R495 A3R496 322–3193–00 322–3306–00 322–3193–00 322–3457–00 311–2238–00 A3R497 A3R498 A3R500 A3R506 A3R507 A3R508 A3R513 A3R514 A3R515 A3R516 A3R517 A3R518 A3R519 A3R520 A3R521 A3R522 A3R523 A3R524 A3R525 A3R526 A3R527 A3R528 A3R529 A3R532 A3R533 A3R534 322–3097–00 315–030
Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Number Part Number Effective Discontinued A3R562 A3R564 A3R565 A3R566 A3R567 A3R568 A3R569 A3R570 A3R571 A3R572 A3R573 A3R574 A3R575 A3R576 A3R577 A3R578 A3R579 A3R580 322–3261–00 322–3289–00 322–3097–00 322–3193–00 322–3193–00 322–3289–00 322–3097–00 322–3170–00 322–3218–00 322–3066–00 322–3314–00 322–3030–00 322–3030–00 322–3030–00 322–3385–00 322–3289–00 322–3185–00 311–2232–00 A3R581 A3R582 A3R583 A3R584 322–3066–00 322–3205–00
Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Number Part Number Effective Discontinued A3R652 A3R654 322–3289–00 311–2231–00 A3R655 311–2232–00 A3R666 A3R667 A3R672 A3R673 A3R675 A3R680 A3R683 A3R684 A3R689 322–3193–00 322–3193–00 322–3243–00 322–3243–00 322–3097–00 322–3346–00 322–3264–00 322–3231–00 311–2238–00 A3R690 A3R691 A3R692 A3R693 A3R694 A3R696 A3R697 A3R698 A3R699 A3R704 A3R705 A3R719 A3R720 A3R728 322–3193–00 322–3306–00 315–0106–00 315–0305–00 322–3457–00 322
Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Number Part Number Effective Discontinued A3R760 A3R761 A3R762 A3R764 A3R765 A3R766 A3R767 A3R768 A3R769 A3R770 A3R771 A3R772 A3R774 A3R775 A3R776 A3R790 A3R791 A3R792 A3R793 A3R794 A3R795 A3R796 A3R797 A3R798 A3R799 A3R800 A3R820 A3R821 A3R822 A3R823 A3R824 A3R828 A3R829 A3R830 322–3216–00 322–3227–00 322–3277–00 322–3226–00 322–3193–00 322–3289–00 322–3277–00 322–3314–00 322–3153–00 322–3153–00 322–3273–00 322–3248–00 322–3373–00 3
Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Number Part Number Effective Discontinued A3R858 A3R859 A3R860 A3R861 A3R862 322–3281–00 322–3206–00 322–3481–00 322–3295–00 311–2236–00 A3R863 A3R864 A3R865 A3R866 A3R867 A3R868 A3R869 A3R870 A3R871 A3R872 322–3481–00 322–3206–00 322–3215–00 322–3215–00 322–3277–00 322–3030–00 322–3281–00 322–3077–00 322–3066–00 311–2230–00 A3R873 A3R875 A3R876 A3R878 A3R879 A3R890 322–3193–00 307–1033–00 322–3001–00 322–3306–00 322–3289–00 311–
Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Number Part Number Effective Discontinued A3R972 A3R976 A3R991 A3R992 A3R993 A3R994 A3R996 A3R997 A3U115 322–3066–00 322–3126–00 322–3097–00 322–3273–00 322–3097–00 322–3250–00 322–3097–00 322–3097–00 156–1225–00 A3U121 A3U139 A3U146 A3U174 156–1955–00 156–1451–00 156–1161–00 156–3170–00 A3U176 156–3170–00 A3U191 156–0048–00 A3U264 156–3170–00 A3U293 156–0048–00 A3U419 A3U443 A3U452 A3U458 A3U479 A3U485 A3U493 156–1191–00
Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Number Part Number Effective Discontinued Name & Description Mfr. Code Mfr.
Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Number Part Number Effective Discontinued Name & Description Mfr. Code Mfr. Part Number A3A1R983 A3A1R985 A3A1R985 A3A1R986 A3A1R986 A3A1R987 A3A1R987 A3A1R988 A3A1R988 321–0955–03 322–3193–07 321–0955–03 321–0619–00 321–1739–07 315–0102–00 315–0132–00 322–3222–07 321–1739–07 RES,FXD,FILM:823 OHM,0.25%,0.125W,TC=T2 MI RES,FXD,FILM:1K OHM,0.1%,0.2W,TC=T9 RES,FXD,FILM:823 OHM,0.25%,0.125W,TC=T2 MI RES,FXD,FILM:1.012K OHM,0.25%,0.
Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Number Part Number Effective Discontinued A4C273 A4C297 A4C309 A4C321 A4C322 A4C330 A4C337 A4C338 A4C368 A4C375 A4C404 A4C406 A4C410 A4C412 A4C422 A4C424 A4C437 A4C438 A4C452 A4C488 A4C497 281–0775–01 290–0973–00 281–0763–00 283–0790–00 283–0790–00 281–0774–00 290–0974–03 281–0775–01 281–0775–01 281–0775–01 283–0790–00 283–0634–00 281–0786–00 281–0763–00 281–0775–01 281–0898–00 281–0819–00 281–0819–00 281–0775–01 281–0775–01 290–0848
Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Number Part Number Effective Discontinued A4Q437 A4Q509 A4Q525 A4Q526 A4Q572 A4R126 A4R130 A4R131 A4R197 A4R197 A4R198 A4R198 A4R199 A4R200 A4R201 A4R202 A4R203 A4R204 A4R205 A4R206 151–0190–00 151–0190–00 151–0190–00 151–0190–00 151–0188–00 322–3402–00 322–3412–00 322–3412–00 322–3126–00 322–3322–00 322–3126–00 322–3322–00 322–3322–00 322–3168–00 322–3168–00 322–3481–00 322–3269–02 322–3357–00 322–3373–00 311–2273–00 A4R207 311–22
Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Number Part Number Effective Discontinued Name & Description Mfr. Code Mfr.
Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Number Part Number Effective Discontinued A4R571 A4U100 A4U100 311–2267–00 160–6608–02 160–6608–03 136–0755–00 A4U137 A4U152 156–0991–00 160–4193–00 136–0752–00 A4U160 160–4194–00 136–0752–00 A4U202 156–1335–00 A4U213 A4U218 156–0383–02 156–1335–00 A4U223 156–1335–00 A4U226 156–1335–00 A4U230 A4U238 156–0704–00 156–1126–00 A4U252 156–2369–00 136–0752–00 A4U255 A4U260 A4U268 156–0784–00 156–0784–00 160–6607–01 136–0
Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Number Part Number Effective Discontinued Name & Description A4Y440 A4CR238 A4CR437 A4CR488 A4CR489 A4CR498 A4CR514 A4CR525 A4CR536 A4CR537 A4CR598 A4VR518 158–0300–00 152–0400–00 152–0141–02 152–0141–02 152–0141–02 152–0141–02 152–0141–02 152–0141–02 152–0141–02 152–0141–02 152–0141–02 152–0195–00 *END MOUNTING PARTS* IC,PROCESSOR:CMOS,MICROCOMPUTER;8–BIT,12MHZ, ROMLESS,128X8 RAM,(7)8–BIT I/O PORTS,SERIAL I/O,80C51 FAMILY *MOUNTI
Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Number Part Number Effective Discontinued A5C211 A5C212 A5C213 A5C220 A5C311 A5C312 A5C313 A5C315 A5C411 A5C412 A5C413 A5C500 A5C510 A5C515 A5C516 A5C600 A5J115 281–0775–01 281–0773–00 281–0775–01 281–0775–01 281–0775–01 281–0773–00 281–0775–01 281–0775–01 281–0775–01 281–0773–00 281–0775–01 283–0177–05 283–0177–00 290–0943–00 290–0943–00 281–0198–00 174–1168–00 A5J200 131–3192–00 A5J205 131–3192–00 A5J300 131–3192–00 A5J305
Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Number Part Number Effective Discontinued A5R311 A5R312 A5R313 A5R315 A5R320 322–3189–00 322–3097–00 322–3354–00 322–3066–00 311–2271–00 A5R330 A5R405 A5R406 A5R408 A5R409 A5R410 A5R411 A5R412 A5R413 A5R420 A5R505 A5R506 A5R509 A5R510 A5R511 A5R512 A5R513 A5R550 A5R560 A5R570 A5R600 A5R601 A5R603 322–3128–00 322–3085–00 322–3139–00 322–3193–00 322–3097–00 322–3193–00 322–3189–00 322–3097–00 322–3354–00 322–3097–00 322–3085–00 322–3
Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Number Part Number Effective Discontinued J200 131–0106–02 J220 131–0106–02 J220 J300 210–0255–00 131–0106–02 J320 131–0106–02 J320 J400 210–0255–00 131–0106–02 J420 131–0106–02 J420 S1 210–0255–00 260–2465–00 174–2648–00 V1 154–0909–16 V1 154–0937–16 W179 174–1446–00 W190 196–3146–00 W191 196–3146–00 W290 196–3146–00 W291 196–3146–00 W352 174–1849–00 214–3903–01 W419 174–1445–00 W590 196–3146–00 W59
Section 9 Diagrams/Circuit Board Illustrations The Replaceable Electrical Parts List is arranged by assembly number in numerical sequence; the components are listed by component number. Example: Component Number Symbols Assembly Number Chassis–mounted components have no Assembly No. prefix. See end of Replaceable Electrical Parts List Schematic Circuit Number Graphic symbols and class designation letters are based on ANSI Standard Y32.2–1975.
CLAMP PULSE OMPOSITE CLAMP PULSE V GAIN COMPOSITE OUTPUT /COMPOSITE SELECT HI VOLTS CLAMP PULSE V DIFF SELECT ÁÁ Á ÁÁ Á CALIBRATOR /V GREEN SELECT CH 1 CH1 DIFF STEP V CAL – + LOW PASS FILTER LTNG SELECT V FLAT SELECT BOWTIE CH2 V LOW SELECT V X5 V LOW SELECT /V BLUE SELECT CH 2 S CLAMP COLOR SHUTTER H BLUE SELECT /V RED SELECT CH 3 CH3 EXT SELECT CAL TIME NO INPUT GRID DRIVE INT COMPOSITE SELECT S CLAMP AND LOWPASS FILTER DC REST AC CPL’D H GAIN DC REST OFF TRANSI
A3 MAIN BOARD Component Locator C114 C119 C156 C187 C193 5 5 3 2 2 B2 B2 H5 B3 C4 B1 C1 I1 N1 O1 C197 C215 C218 C242 C243 2 5 5 5 5 B4 C1 C3 C5 B5 P1 B2 C2 G2 G2 C246 C255 C258 C290 C297 5 4 3 2 1 A5 E2 B5 C3 B1 G2 I2 I2 O1 P2 C310 C338 C342 C343 C348 5 5 5 5 4 C1 C5 C5 B5 E2 B2 F2 G2 G2 H3 C350 C353 C354 C355 C366 3 3 3 3 3 C4 E5 E5 E5 E3 I1 I2 I3 I3 K3 C370 C379 C391 C395 C399 2 2 1 1 1 G1 F4 E1 E1 E2 L3 M3 O2 P2 P3 C424 C436 C438
‘ * ) ( * ( ) Board lookup table on front of this page. A3 Main Board Static Sensitive Devices See Maintenance Section Assembly A3. Schematic Diagram <1> Component Locator Chart Assembly A3. Partial Assembly A3 also shown on Diagrams 2, 3, 4, and 5.
+ + + +' + * ' * & ' REAR PANEL % ' ' #%*) , * ' + ' # ' ' ' * , ' + $ ( ) + ' * )! * # + + * +( + '#( ! & ' () $ ( ) ' " ! "% ! "% % ' ' " ' + * # ' ' # ' '
Schematic Diagram <2> Component Locator Chart The schematic diagram has an alphanumeric grid to assist in locating parts within that diagram. Assembly A3 and A3A1. Partial Assembly A3 also shown on diagrams 1, 3, 4 and 5.
COMPONENT TO GBR TRANSCODER ( $ ' ' $ $ ' $ $ $ ' $ $ $ $ ( ( ( ' ' ( ! &% &! $
Schematic Diagram <3> Component Locator Chart The schematic diagram has an alphanumeric grid to assist in locating parts within that diagram. Assembly A3. Partial Assembly A3 also shown on diagrams 1, 2, 4, and 5.
' ' $ & # ' & # '$ '$ # # ' & ! # # & ! ' # % " # ' '$ # ' " # ' # # & $ ! ' ' # %$ ! & ' &% $ ' & & ' ! # ' '
Schematic Diagram <4> Component Locator Chart Assembly A3. Partial Assembly A3 also shown on diagrams 1, 2, 3, and 5.
R729 2.00K CR726 +11.8V E4 +11.8V +11.8V H GAIN -11.8V H CAL R628 25K R936 3.74K C840 1-5.4PF R836 221.0K R937 13.7K +11.8V R839 100.0 R733 0 OHM C2 R940 47.5 Q840 R654 1K R944 1.00K 5 4 U174A IH5352 G4 <1> RED RED 2 A5 A5 <3> <3> 1 1 1 <1> -11.8V R738 47.5 -11.8V HBLUESEL BLUE BLUE 4 HMAG1 HI 2FIELD HMAG2 HI HMAG3 LOW 1LINE HI HI HI 2LINE HI LOW LOW R508 6.
Schematic Diagram <5> Component Locator Chart Assembly A3 and A2. Partial Assembly A3 also shown on diagrams 1, 2, 3, and 4.
GRATICULE ILLUMINATION 672-0278-09 & BELOW R120 24.3K U121 TL011 3 SCALE I A4 <4> J100 LIGHT ENABLE C R222 4.7 -11.8V L210 10UH J500 +5V R214 18.2K A4 P200 2 1 4 3 C310 100UF R117 1.00K R118 5.11K 1 2 3 S125 S309 S510 +11.8V A4 CR215 7 5 C119 .1UF Q116 -11.8V COMPOSITE REFERENCE UP S243 S342 S509 S320 +11.8V [RCL1] SCALE DS300 FRONT PANEL R430 20K SCALE -11.8V ROW1 +11.
A5 GBR Board Static Sensitive Devices See Maintenance Section Schematic Diagram <6> Component Locator Chart The schematic diagram has an alphanumeric grid to assist in locating parts within that diagram. Assembly A5.
' ' # ! $ % !&% # & # ' # " & ' & & # ' ' " # # ! & # ' & # !& $ ' # & # & ' # ' # %$ % %# # & ' OUTPUTS # # #
Static Sensitive Devices See Maintenance Section A4 Control Board Component Locator C133 C135 C148 C172 C173 C178 C192 C197 C198 C200 C206 C216 C220 C222 C223 7 7 10 10 9 A3 A2 A5 A5 G3 9 10 9 9 10 10 8 8 8 8 G5 A5 D5 C4 F3 F4 C4 C5 F2 D5 E1 E1 I1 K1 K1 C368 L1 G2 N1 N1 A2 A2 C2 C2 C1 C2 C226 C227 C228 C232 C238 8 8 8 7 7 B3 E3 C3 A2 B2 D1 D2 D2 E1 F1 C258 C273 C297 C309 C321 10 10 7 10 8 B5 B5 G5 D4 F3 M3 K2 N2 B3 C3 C322 C330 C337 C338 8 8 7 10 G3 D3 C2
, - ' & % # ' & # &% & ' # ' & ' & # $% ! ! ! ! %$ %
Static Sensitive Devices See Maintenance Section Board lookup table on previous page. 671-1357-00 – 03 A4 Control Board Schematic Diagram <8> Component Locator Chart The schematic diagram has an alphanumeric grid to assist in locating parts within that diagram. Assembly A4.
+11.8V G2 <10> /SYNCOUT R416 68.1K R415 30.9K C406 65PF +5V G1 <7> U514 H2028 /INTCOMPST 14 J419 CONNECTS TO P600 G1 <6> A5 GBR BOARD +5V U425 MAX453 1 J419 INTCOMPST 2 1 R422 20.0K 6 H2 <7> C422 .1UF 2 INTREF R424 1.00K 3 R520 332.0 C521 4.7UF R519 20.0K 8 9 R517 825.0K 7 8 13 -15V R425 1.00K VR518 5.1V C520 .1UF 1 +15V B CLAMP C D 10 NC 12 NC 15 NC 16 NC R506 68.
Schematic Diagram <9> Component Locator Chart The schematic diagram has an alphanumeric grid to assist in locating parts within that diagram. Assembly A4. Partial Assembly A4 also shown on diagrams 7, 8, and 10.
+15VDC U493A DG211 2 E3 D3 D3 <7> <7> <7> LINSTEP LINSTEP /STARTRO /STARTRO GRATSEL GRATSEL GRATADD1 GRATADD1 GRATADD2 GRATADD2 GRATADD3 GRATADD3 GRATADD4 GRATADD4 G2 <7> GRATADD5 GRATADD5 U152 16V8-25Q 187KHZ 1 93KHZ 2 GRATSEL 3 /STARTRO 4 DB5 5 DB4 6 7 GRATADD6 GRATADD6 NC GRATADD7 GRATADD7 NC GRATADD8 GRATADD8 9 11 GRATADD9 GRATADD9 8 I/CK I/O I I/O I I/O I I/O I I/O I I/O I I/O I I/O <7> A QA QB QC CLR QD BLANK 3 NC 4 NC 5 NC A QA Q
Schematic Diagram <10> Component Locator Chart The schematic diagram has an alphanumeric grid to assist in locating parts within that diagram. Assembly A4. Partial Assembly A4 also shown on diagrams 7, 8, and 9.
J352 1A REMOTE 1B 2A 2B 1 9 2 10 3 11 4 12 5 13 6 14 7 15 8 3A 3B 4A 4B 5A 5B 6A 6B 7A 7B REAR PANEL 8A 8B 1 NC 2 3 NC 4 NC /REMOTE 5 /STOR_DIS 6 7 NC 8 NC 9 /RCL2 10 /PRESET1 11 /RCL3 12 /PRESET2 13 /RCL1 14 /50HZ 15 NC 16 NC +5V R301 4.75K +5V 1 R252 10K 2 /RCL1 2 3 /RCL2 3 4 /RCL3 4 5 /PRESET1 5 6 /PRESET2 6 7 /50HZ 7 8 /STOR_DIS 8 9 /REMOTE 9 10 G3 G3 <7> <7> AD[0..
(C64) (CR28) A1 Power Supply Board Static Sensitive Devices See Maintenance Section C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 12 12 12 12 12 12 12 12 12 12 C11 C12 C13 C14 C15 C16 C17 C18 C19 C20 C21 C22 C23 C24 C25 C27 C4 D3 D3 D3 D4 C4 F3 D3 E2 C5 A4 D1 A2 A2 B3 B4 B1 B2 B2 B4 C28 C29 C30 C31 12 11 11 11 B1 F2 F2 F3 E3 F1 F2 F3 C32 C33 C34 C35 C36 C37 C38 C39 C40 C41 11 11 12 11 11 11 11 11 11 11 F2 G2 D1 F3 G2
+* %$ "" ( + *(/ *% * " * % * )%" * %$ %+$ (/ ) * &%- ( " $ &%* $* " $ ( '+ ( ) $ )%" * %$ *( $) %(# ( *% ) (, )%" * %$ %+$ (/ $%* $)* "" ( LINE RECTIFIER AND FILTER $%* +) $%* $)* "" OUTPUT FILTERS #%+$* $ " # + ( CLAMP " + ( , , ( ( ( & $ " ( ( + + ( + ( ! (, $%* $)* "" * % # + ( $
Schematic Diagram <12> Component Locator Chart The schematic diagram has an alphanumeric grid to assist in locating parts within that diagram. Assembly A1. Partial Assembly A1 also shown on diagram 11.
$ HV OSC & ERROR AMP ' ( ' $ ' $ ( " " " ( !'& ' $ & GRID DRIVE $ $ # $& % # ' $ $ $ $ $ $ ' $ $ ' ' % % ' $!) % $ $ $ ( $& & ! ' ( ' ' %& $ $ ) & $ $ $ $ $ $ (
Section 10 Replaceable Mechanical Parts This section contains a list of the components that are replaceable for the WFM 300A. Use this list to identify and order replacement parts. There is a separate Replaceable Mechanical Parts list for each instrument. Parts Ordering Information Replacement parts are available from or through your local Tektronix, Inc., Field Office or representative.
Replaceable Mechanical Parts Column Descriptions Figure & Index No. (Column 1) Items in this section are referenced by figure and index numbers to the illustrations. Tektronix Part No. (Column 2) Indicates part number to be used when ordering replacement part from Tektronix. Serial No. (Column 3 and 4) Qty (Column 5) Name and Description (Column 6) Column three (3) indicates the serial number at which the part was first used. Column four (4) indicates the serial number at which the part was removed.
Replaceable Mechanical Parts Cross Index – Mfr. Code Number To Manufacturer Mfr.
Replaceable Mechanical Parts Replaceable Mechanical Parts Fig. & Index No. Tektronix Part No.
Replaceable Mechanical Parts Fig. & Index No. Tektronix Part No. –33 –34 –35 –36 Serial Number Effective Dscont Qty 12345 210–1039–00 210–0986–00 200–2519–00 426–2096–00 8 8 1 1 –37 210–0457–00 2 –38 136–1167–00 1 –39 –40 –41 –42 –43 346–0120–00 337–3487–00 334–1379–00 386–4443–00 ––––––––––– 3 1 1 1 1 –44 211–0721–00 3 –45 –46 348–0171–00 351–0728–00 1 1 –47 210–0586–00 1 –48 –49 –50 –51 426–2173–02 344–0111–00 343–0298–00 343–0775–00 1 2 2 1 –52 211–0720–01 2 WASHER,LOCK:0.
Replaceable Mechanical Parts 10–6 WFM 300A
FIG.
WFM 300A
