Tektronix 620-0295-00 Service Manual Download Page 79

Page: 79 / 121

Summary of Contents for 620-0295-00

Page 1: ...L t f I Tektronix Inc P O Box 500 Beaverton Oregon 97077 MANUAL PART NO 070 3732 00 COMMITTED TO EXCELLENCE 620 0295 00 LOW VOLTAGE POWER SUPPLY SERVICE MANUAL First Printing FEB 1981...

Page 2: ...y Tektronix Inc Beaverton Oregon Printed in the United States of America All rights reserved Contents of this publication may not be reproduced in any form without permission of Tektronix Inc This ins...

Page 3: ...ON STATUS PRODUCT 620 0295 00 Low Voltage Power Supply This manual supports the following versions of this product Part Numbers 620 0295 00 and up REV DATE DESCRIPTION FEB 1981 Original Issue 620 0295...

Page 4: ......

Page 5: ...3 Preparation 3 4 Control Circuit 3 4 Primary Circuit 3 6 Logical On Off Switch 3 7 DC Supplies 3 8 Timing Circuit 3 8 Assembly Disassembly 3 9 Replacing the Line Rectifier 3 9 Replacing the Switching...

Page 6: ...5 4 Control Circuit 5 6 DC Supplies 5 8 Timing Circuit 5 11 REPLACEABLE ELECTRICAL PARTS DIAGRAMS AND SCHEMATICS REPLACEABLE MECHANICAL PARTS SIGNAL DEFINITIONS AND REFERENCES TABLES Description Page...

Page 7: ...form 3 5 Inverter Dead Time 3 5 Connecting the Current Probe 3 6 Bypassing Triac 3 6 Inverter Waveform 3 7 Mounting of Switching Transistors 3 9 Removing the Inverter Board 3 1 O Removing the Regulato...

Page 8: ......

Page 9: ...r is on Disconnect the power before removing protective pan els soldering or replacing components After the power has been disconnected the neon flasher on the Inverter board indicates that dangerous...

Page 10: ...Figure 1 1 The 620 0295 00 Low Voltage Power Supply vi 620 0295 00 POWER SUPPLY...

Page 11: ...s mounted line filter A Line Voltage Selector board An Inverter board which rectifies and filters the line voltage then chops it at 20 kHz to drive the inverter transformer The Control circuit regulat...

Page 12: ......

Page 13: ...on 48 to 6 3 Hz 1 35 to 1 414 115 V 6 25 A medium 230 V 3 A fast 35owa aExcludlng AC for fans and disk If maximum current were drawn from all DC supplies simultaneously it would result in Input power...

Page 14: ...not required for the other supply voltages 0 speclal Requirements for Memory Boards During power up the 12 V supply must reach 5 Volts before the 12 V supply reaches 1 O v During power down the 1 2 V...

Page 15: ...1 000 ft 300 m above 5 000 ft 1 5 km Non operating 50 000 ft 15 km Vibration Non operating Withstands 0 Q15 in p p 0 38 mm iO to 55 Hz sine wave 15 min each axis and 10 min each axis at resonance or...

Page 16: ...output 12V 12 Voutput 12 V 12 V output G SENSE Ground sense from host product 5 V SENSE 5 V sense from host product PWRFL 0 Power failure warning INIT 0 Power up initialization signal GND Return for a...

Page 17: ...n disconnected the neon flasher on the Inverter board indicates that dan gerous voltages are still present in the filter capacitors Some fault conditions may cause the switching transistors or other p...

Page 18: ...in 1 of the base drive transformer T540 Figure 3 4 Position the ground reference in the center of the screen 3 Connect the external DC source to J63 using the harmonica connector shown in Figure 3 2A...

Page 19: ...with that shown in the top of Figure 3 6 Figure 3 4 Base Drive Test Point 620 0295 00 POWER SUPPLY MAINTENANCE 9 Change HORIZ DISPLAY to B DLY D and verify that the dead time interval shown in Figure...

Page 20: ...ied on the amplifier typically 10 mV d Position the ground reference two divisions from the bottom of the screen Figure 3 7 Connecting the Current Probe 4 Place the jumper Figure 3 2C on J60 Figure 3...

Page 21: ...hown in the lower half of Figure 3 9 8 Remove the harmonica connector which attaches the external supply to J63 This also enables current limiting The power supply should continue to run Failure to do...

Page 22: ...exceeds 6 0 V SDN shutdown causes the Pulse Width Modulator to shut off the base drive signals If the 12 V supply exceeds 13 5 V again SDN causes the Pulse Width Modulator to shut off the base drive...

Page 23: ...failed CR45 7 and CR555 may have become leaky and should also be replaced 1 Remove the cover over the Inverter board 2 Remove the cover over the switching transistors 3 Unsolder the transistor leads 4...

Page 24: ...ear These are marked 8 9 and 1O respectively on the board LE AD 1 4 Unsolder Lead 11 from the board 5 Remove the cover from the switching transistors 6 Remove the seven screws holding the board in pla...

Page 25: ...rd MAINTENANCE 6 Return to the Regulator board Remove the screws fastening Q60 Q75 Q80 Q85 and Q95 to the heat sink Save the washers and mica insulators 7 Remove the clamp holding R1001 to the heat si...

Page 26: ...ace the 5 V chassis mounted inductor L1001 the large filter capacitor C55 or the Line Voltage Selector board first remove the Inverter board and its support bracket in one piece 1 Remove the cover ove...

Page 27: ...factor between 1 35 and 1 414 The load on the 5 V supply must be between 3 A and 30 A The check may be performed with the module connected to a properly functioning host product or to the test load d...

Page 28: ...e measuring the 55 V output at J7 4 4 Repeat Step 3 3732 17 Figure 4 1 Power Supply Test Points 4 2 Table 4 1 POWER SUPPLY VOLTAGE LIMITS Nominal Test Voltage Point Range8 5 yb J73 4 4 85to5 15V 5V 3...

Page 29: ...hould trigger the oscilloscope Compare the waveform with that shown in Figure 4 3 PWRFL 0 should go low at least 11 ms before INIT 0 Because the interval varies with line volt age and the load on the...

Page 30: ......

Page 31: ...cle of the switches between 0 and 45 each Increasing the duty cycle raises the average voltage in the secondary The module contains four circuit boards A VDE Line Filter board Schematic A1 to supple m...

Page 32: ...d point in the host product GND is the power supply working ground and return for all supplies except 5 V 5 V RTN is a separate return for the 5 V 30 A supply G SENSE ground sense gives voltage regula...

Page 33: ...s a triac on the AC line The host product controls this switch by OFF 1 ON 0 620 0295 00 POWER SUPPLY The Schmitt trigger supplies local DC to the Pulse Width Modulator and base drive During power up...

Page 34: ...these voltages are still present in the filter capacitors Refer to Schematic A2 on same sheet as the intercon nect diagram Line Voltage Selector Two switches configure the primary circuit for opera ti...

Page 35: ...when the system is turned on THEORY OF OPERATION Switching Transistors Switching transistors 0515 and Q521 alternately push and pull current through the primary of T320 These transistors are controll...

Page 36: ...s 2 and 3 whenever the module is connected othe AC lines The voltage developed in the primary induces a small voltage across Terminals 4 and 5 for the triac gate This gate voltage depends on the state...

Page 37: ...rcuit regulates the 5 V supply by varying the on time of the switching transis tors It also provides preliminary regulation for the other supplies Figure 5 5 is a simplified block diagram of the Pulse...

Page 38: ...0 Q551 Q560 Transistors 1 ON OFF OFF Turns on Q521 2 OFF ON OFF Helps turn off Q521 3 OFF OFF ON Turns on Q515 4 OFF ON OFF Helps turn off Q515 5 8 Q460 and Q560 determine the direction of current thr...

Page 39: ...til the current limit is reached Figure 5 7 At this point further reduction in load resistance causes less current to be sent to the load The operating point moves down the characteristic curve as the...

Page 40: ...vervoltage protection If the supply exceeds 13 5 V current through the diode asserts SON to shut down the Pulse Width Modulator 5 10 12 V Supply The 12 V supply is driven by a full wave rectifier whic...

Page 41: ...des overvoltage protection at 6 0 V by sending SDN shutdown to the Pulse Width Modu lator 620 0295 00 POWER SUPPLY THEORY OF OPERATION TIMING CIRCUIT Initialization INIT 0 The INIT 0 signal goes low w...

Page 42: ......

Page 43: ...ct you concerning any change in part number Change information if any is located at the rear of this manual SPECIAL NOTES AND SYMBOLS X000 Part first added at this serial number 00X Part removed after...

Page 44: ...R J W DIV TEKTRONIX INC MALLORY CAPACITOR CO DIV OF P R MALLORY ANDCO INC DALEELECTRONICS INC Address PO BOX35263 67 ALBANY STREET ORANGE STREET PO BOX3608 1201 2ND STREETSOUTH 14520 AVIATIONBLVD PO B...

Page 45: ...TERMINAL PIN 0 46 L X 0 025 SQ PH BRZ 22526 47350 QUANTITY OF 2 AlJ66 l l 0589 00 TERMINAL PIN 0 46 L X 0 025 SQ PH BRZ 22526 47350 QUANTITY OF 2 A2 VOLTAGE SELECTOR A2 670 6450 00 CKTBOARD ASSY VOLAG...

Page 46: ...F 1 lOOV CAP FXD ELCTLT 1UF 20 35V CAP FXD CER DI 0 47UF 80 20 50V SEMICOND DEVICE SILICON 30V 150MA SEMICOND DEVICE SILICON 30V 150MA SEMIGOND DEVICE SILICON 30V 150MA SEMICOND DEVICE SILICON 30V 150...

Page 47: ...10KOHM 5 0 25W 01121 CB9145 A3R386 321 0441 00 RES FXD FILM 383K OHM 1 0 125W 91637 MFF1816G38302F A3R430 315 0100 00 RES FXD CMPSN 10 OHM 5 0 25W 01121 CB1005 A3R454 308 0574 00 RES FXD WW 10 OHM 5 2...

Page 48: ...2P A4C402 283 0000 00 CAP FXD CER DI 0 001UF 100 0 500V 72982 831 516El02P A4C446 290 0758 00 CAP FXD ELCTLT 2 2UF 50 10 160V 56289 502D227 A4CR185 152 0066 00 SEMICOND DEVICE SILICON 400V 750MA 14433...

Page 49: ...00 TRANSISTOR SILICON NPN 07263 S032677 A4R75 308 0087 00 RES FXD WW 0 5 OHM 1 lW 80009 308 0087 00 A4R76 308 0643 00 RES FXD WW 0 1 OHM 3 3W 91637 RS2B ER1000H A4R85 308 0463 00 RES FXD WW 0 3 OHM 1...

Page 50: ...OHM 1 0 125W 91637 MFF1816Gl7800F A4R447 321 0262 00 RES FXD FILM 5 23K OHM 1 0 125W 91637 MFF1816G52300F A4R448 321 0076 00 RES FXD FILM 60 4 OHM 1 0 125W 91637 MFF1816G60R40F A4R449 321 0229 00 RES...

Page 51: ...REGULATOR CONT Name Description MICROCIRCUIT LI DUALOPERATIONAL AMPLIFIER MICROCIRCUIT LI DUALCOMPARATOR MICROCIRCUIT LI DUALOPERATIONAL AMPLIFIER SEMICOND DEVICE ZENER 0 4W 12 6V 5 SEMICOND DEVICE ZE...

Page 52: ...60HZ 02777 F85432 LlOOl 108 1054 00 COIL RF FIXED 20 7UH 80009 108 1054 00 Q60 151 0621 00 TRANSISTOR SILICON NPN 80009 151 0621 00 Q75 151 0657 00 TRANSISTOR SILICON PNP 04713 SJE1973 Q80 151 0656 0...

Page 53: ...BT Battery J Connector stationary portion C Capacitor fixed or variable K Relay CB Circuit breaker L Inductor fixed or variable CR Diode signal or rectifier M Meter DL Delay line p Connector movable p...

Page 54: ...signal source and the to reference lists all loads where the signal is used All from to information will be enclosed in parentheses From J350 Pin 6 and To Assembly 1 Assembly 1 Sheet 5 Sheet 5 etc J3...

Page 55: ...SWITCH I SIGNALS I I I I I I ON O POWER 24V 620 0295 00 POWER SUPPLY SCHMITT TRIGGER LO CALDC _____ __ PULSE WIDTH MODULATOR CURRENT SENSE OVERVOLTAGE SHUTDOWN 5V SENSE INVERTER BOARD POWER SUPPL V BL...

Page 56: ...l POWER 8 02 8 01 8 3 8 3 8 2 8 1 1 N 2 N 12 3 N 13 4 N 14 5 N Is 6 N 16 7 N 17 8 N Is 9 N lg 0 N I10 L_j I 12 I 1 LJ I I Q 12 1 I LJ I I 13 LJ I P1003 27 LJ P1002 S37 21 1 LJ P1001 37 tJ LINE NEUTRAL...

Page 57: ...Inverter 670 6430 00 Component Location 3732 30 620 0295 00 POWERSUPPLY I I...

Page 58: ...st before supply came into regulation with load of about SA total 0 CURRENT PROBE 2A DIV L r r s V J f _L 1 I 10 t f l 0 3732 8 Basic Drive Waveform si V J 1 13 l IS n 00 l I 9 U I II I I j 7 n 1 I J...

Page 59: ...1Zl1Zl E 1 HMITT TRIGGER R386 383K Q281 R188 6 2K Q487 R484 191K 3732 2 R325 100 __ _ _____ _ CR523 3 I T540 I 10 Q460 C533 CR414 NEUTRAL I I I I I I I I g C536 4 7uF 8 T320 I 0 1uF f Q551 I I I 7 I...

Page 60: ...3732 31 Regulator 670 6429 00 Component Location 620 0295 00 POWERSUPPLY...

Page 61: ..._ 1 g2 I 24 VOLTS I Ll GND ILJ Q85 J P75 H __ ___ 1r 1V 1 24 VOLTS H35 18K _ L30 ___ _ 3 605uH CR421 2 3 C115 i390uF R244 20 0K 12V U475B LM319 CR485 C375T 22uF v CR288 5V REF CR366 CR368 R372 470 C2...

Page 62: ...hased separately unless otherwise specified ITEM NAME In the Parts List an Item Name is separated from the description by a colon Because of space limitations an Item Name may sometimes appear as inco...

Page 63: ...Y PENNFIBRE ANDSPECIALTYCO INC SEASTROM MFG COMPANY INC TEXTRONINC CAMCAR DIV Address 2015 SECONDST PO BOX3608 7100 LAMPSON AVE 342 39TH ST 250 TURNPIKERD P O BOX390 YOUKEXPRESSWAY 2040 15TH AVENUE WE...

Page 64: ...ISTOR SEE RlOOl REPL 18 131 0707 00 2 CONNECTOR TERM 22 26 AWG BRS CU BE GOLD 22526 47439 l 19 352 0169 04 1 CONN BODY PL EL 2 WIREYELLOW 80009 352 0169 04 A4P77 20 1 CKTBOARD ASSY REGULATOR SEE A4 RE...

Page 65: ...3385 OBD 56 2ll 0510 00 3 SCREW MACHINE 6 32 X 0 375 PNH STL CD PL 83385 OBD 57 334 3379 02 2 MARKER IDENT MARKED GROUND SYMBOL 80009 334 3379 02 195 1040 00 1 LEAD ELECTRICAL 18 AWG 4 0 L 5 4 80009 1...

Page 66: ...LAMP MOUNTING POT COIL AL 80009 343 08 71 00 89 1 CKT BOARD ASSY V SELECTOR SEEA2 REPL ATTACHING PARTS 90 211 0016 00 2 SCREW MACHINE 4 40 X 0 625 INCH PNH STL 83385 OBD 91 166 0033 00 2 SPACER SLEEVE...

Page 67: ......

Page 68: ...103 1 620 0295 00 pOWER SUPPLY...

Page 69: ...ating INIT 0 A4 Host Power up initialization signal for host product It stays low at least 50 ms after 5 V comes into regulation L SENSE A3 A4 Line sense for power failure warning logic It also provid...

Page 70: ......

Page 71: ...CHANGE INFORMATION...

Page 72: ...I...

Page 73: ...A PAGE REPLACEMENT PACKAGE The area of change is marked by a change bar in the margin 1 Remove the appropriate pages from your manual and insert the attached pages 2 Update Manual Revision Status page...

Page 74: ......

Page 75: ...48 to 66 Hz 1 35 to 1 414 115 V 6 25 A medium 230 V 3 A fast 350 wa 8 Excluding AC for fans and disk II maximum current were drawn from all DC supplies simultaneously ii would result in input power of...

Page 76: ...quired for the other supply voltages 0speclal Requirements for Memory Boards During power up the 1 2 V supply must reach 5 Volts before the 12 V supply reaches 1 O V During power down the 1 2 V supply...

Page 77: ...1 5 km Non operating 50 000 ft 15 km Vibration Non operating Withstands 0 Q15 in p p 0 38 mm 10 to 55 Hz sine wave 15 min each axis a id 10 min each axis at resonance or 55 Hz Shock Non operating Wit...

Page 78: ...put 12 V 12 Voutput 12 V 12 V output G SENSE Ground sense from host product 5 V SENSE 5 V sense from host product PWRFL 0 Power failure warning INIT 0 Power up initialization signal GND Return for all...

Page 79: ...FL 0 10 Turn off the power This simulates a power failure and should trigger the oscilloscope Compare the waveform with that shown in Figure 4 3 PWRFL 0 should go low at least 11 ms before INIT 0 Beca...

Page 80: ......

Page 81: ...overvoltage protection at 6 0 V by sending SON shutdown to the Pulse Width Modu lator TIMING CIRCUIT Initialization INIT 0 THEORY OF OPERATION The INIT 0 signal goes low when the 5 V supply drops bel...

Page 82: ......

Page 83: ...HE SAME NUMBERS ADD NEW COMPONENT LOCATIONS AND SCHEMATICS THIS IS A PAGE REPLACEMENT PACKAGE 1 2 The area of change is marked by a change bar in the margin Remove the appropriate pages from your manu...

Page 84: ......

Page 85: ...V 12 V 12 V 24 V and 55 V In addition 120 VAC is available to drive motors The module occupies approximately 5 by 5 by 9 5 inches within the chassis of the host product An external heat sink is approx...

Page 86: ...voltage warning flasher indicates the presence of dangerous voltages on the Inverter board Differences Among Versions This section describes the main differences among the 00 01 and 02 versions of the...

Page 87: ...on operating 50 000 ft 15 km Vibration Non operating Withstands 0 Q15 in p p 0 38 mm 10 to 55 Hz sine wave 15 min each axis and 10 min each axis at resonance or 55 Hz Shock Non operating Withstands 30...

Page 88: ...ut 12 V 12 V output 12 V 12 V output G SENSE Ground sense from host product 5 V SENSE 5 V sense from host product PWRFL 0 Power failure warning INIT 0 Power up initialization signal GND Return for all...

Page 89: ...ach Increasing the duty cycle raises the average voltage in the secondary The module contains four circuit boards A VDE Line Filter board Schematic A1 to meet I electromagnetic compatibility requireme...

Page 90: ...d point in the host product GND is the power supply working ground and return for all supplies except 5 V 5 V RTN is a separate return for the 5 V 30 A supply G SENSE ground sense gives voltage regula...

Page 91: ...triac on the AC line The host product controls this switch by OFF 1 ON 0 The Schmitt trigger supplies local DC to the Pulse Width Modulator and base drive During power up this current comes from the L...

Page 92: ...these voltages are still present in the filter capacitors Refer to Schematic A2 on same sheet as the intercon nect diagram Line Voltage Selector Two switches configure the primary circuit for opera t...

Page 93: ...istor 1234 of Assembly 23 Example b component number A23A2R1234 A23 A2 R1234 Assembly Subassembly L__ number Circuit number Read Resistor 1234 of Subassembly 2 of Assembly 23 620 0295 00 POWER SUPPLY...

Page 94: ...IV OF P R MALLORY ANDCO INC DALEELECTRONICS INC Address 7625 BUSHLAKERD P O BOX35263 67 ALBANY STREET ORANGE STREET PO BOX3608 1201 2ND STREETSOUTH 14520 AVIATIONBLVD PO BOX5012 13500 N CENTRAL EXPRES...

Page 95: ...0 TERMINAL PIN 0 46 L X 0 025 SQ 80009 131 0589 00 QUANTITY OF 2 620 0295 00 0l ONLY AlJ66 131 0589 00 TERMINAL PIN 0 46 L X 0 025 SQ 80009 131 0589 00 QUANTITY OF 2 AlLl 108 1124 00 COIL RF FIXED TOR...

Page 96: ...CER DI 0 0015UF 5 200V 72982 805 509Bl52J 670 6430 00 01 ONLY A3C476 283 0397 00 CAP FXD CER DI 1160PF 2 100V 04222 3430100All 60PFG 670 6430 02 ONLY A3C533 283 0111 00 CAP FXD CER DI 0 1UF 20 50V 72...

Page 97: ...NTITY OF 5 TRANSFORMER RF TOROID COMMONMODE REJECT COIL RF FIXED 25UH COIL RF 1 8MH THYRISTOR TRIAC 10A 400V TRANSISTOR SILICON PNP TRANSISTOR SILICON NPN TRANSISTOR SILICON PNP TRANSISTOR SILICON PNP...

Page 98: ...01121 CB3315 A3R565 315 0102 00 RES FXD CMPSN lK OHM 5 0 25W 01121 CB1025 A3R578 315 0201 00 RES FXD CMPSN 200OHM 5 0 25W 01121 CB2015 A3R579 315 0202 00 RES FXD CMPSN 2KOHM 5 0 25W 01121 CB2025 A3R5...

Page 99: ...CAP FXD ELCTLT 1UF 10 35V 90201 TAC105K035P02 670 6429 01 ONLY A4C391 290 0408 01 CAP FXD ELCTLT lOOUF 50 10 100 W VDC 55680 lOOELAlOO A4C392 285 1133 00 CAP FXD PLSTC 0 33UF 1 100V 50558 MH12D334F A...

Page 100: ...1 151 0250 00 TRANSISTOR SILICON NPN 80009 151 0250 00 A4Q351 151 0188 00 TRANSISTOR SILICON PNP 04713 SPS6868K A4Q377 151 0190 00 TRANSISTOR SILICON NPN 07263 S032677 A4Q378 151 0190 00 TRANSISTOR SI...

Page 101: ...SN lOKOHM 5 0 25W 01121 CB1035 A4R382 315 0433 00 RES FXD CMPSN 43KOHM 5 0 25W 01121 CB4335 A4R405 308 0314 00 RES FXD WW 680OHM 5 3W 91637 RS2B B680ROJ A4R435 305 0183 00 RES FXD CMPSN 18KOHM 5 2W 01...

Page 102: ...GC 15454 10El04 DC S A4U258 156 0853 00 MICROCIRCUIT LI OPERATIONAL AMPLIFIER DUAL 27014 LM358N A4U351 156 0158 01 MICROCIRCUIT LI DUAL OPERATIONAL AMPLIFIER 80009 156 0158 01 A4U458 156 0158 01 MICRO...

Page 103: ...9 6JX5431A 620 0295 02 ONLY LlOOl 108 1054 00 COIL RF FIXED 20 7UH 80009 108 1054 00 Q60 151 0621 00 TRANSISTOR SILICON NPN 80009 151 0621 00 Q75 151 0657 00 TRANSISTOR SILICON PNP 04713 SJE1973 Q80 1...

Page 104: ......

Page 105: ...separately unless otherwise specified ITEM NAME In the Parts List an Item Name is separated from the description by a colon Because of space limitations an Item Name may sometimes appear as incomplet...

Page 106: ...ECIALTYCO INC SEASTROM MFG COMPANY INC TEXTRON INC CAMCAR DIV Address 2015 SECOND ST PO BOX3608 7100 LAMPSON AVE 342 39TH ST 250 TURNPIKE RD P O BOX390 2021 WVALLEY VIEWLANE PO BOX34829 YOUK EXPRESSWA...

Page 107: ...G PARTS 15 211 0016 00 1 SCREW MACHINE 4 40 X 0 625 I CH PNH STL 83385 OBD 16 198 4300 00 1 WIRE SET ELEC 80009 198 4300 00 17 1 RESISTOR SEE RlOOl REPL 18 131 0707 00 2 CONNECTOR TERM 22 26 AWG BRS C...

Page 108: ...0 01 ONLY 211 0008 00 7 SCREW MACHINE 4 40 X 0 25 INCH PNHSTL 83385 OBD 620 0295 02 ONLY INVERTER BOARD ASSYINCLUDES 46 1 TRANSISTOR SEE A3Qll5 REPL ATTACHING PARTS 47 211 0511 00 1 SCREW MACHINE 6 32...

Page 109: ...ELEC CONNECTOR BRASS TIN PL CONNBODY PLUG 3CONTACT MALE Pl002 TO B1002 ON 4112 CONTACT ELEC CONNECTOR BRASS TIN PL CONNBODY RCPT 2CONT FEMALE Pl003 Pl004 TO Bl003 Bl004 ON 4112 CONNBODY RCPT 3CONTACTS...

Page 110: ...odelNo Eff Dscont Qty 1 2 3 4 5 Name Description 1 WIRE SET ELEC 2 CONNECTOR TERM 18 20 AWG CU BE GOLDPL 1 CONN BODY PL EL 3 WIREBLACK AlP64 1 1 HEATSINK ELEC POWER SUPPLY ALUMINUM SUPPORT PWR SPLY FR...

Page 111: ...i _ I 5 REV NOV 1981 620 0295 00 POWER SUPPL y m r 0 0 m 0...

Page 112: ...Inverter 670 6430 01 ComponentLocation...

Page 113: ...Inverter 670 6430 02 ComponentLocation...

Page 114: ...r N J N 3 U1 I J 6 t J 66 2 EB L VOE Line Filter 670 7248 01 ComponentLocation...

Page 115: ...f003 27 u P1002 37 I u P112Hi l1 37 u LINE NEUTRAL LINE NEUTRAL LINE GND NEUTRAL LINE CENTER NEUTRAL CENTER NEUTRAL GND CENTER NOTE 115VAC EXISTS BETWEEN PINS 1 3 OF P1001 P1002 REGARDLESS OF SWITCH P...

Page 116: ...i0 x si 0 T i R s o 3 SWITCH POSITION U2 TEST Pe3 NEUTRAL LINE LINE CENTER i b cs cs INPUTS _ 21 VOL TS GND OFF I ON II II 12 voLTs d 12 VOLTS G SENSE G SENSE D 1 t I CS r 1 OFF 1 ON 121 J C SON n 1...

Page 117: ...83 Q 3 87 I i CR157 I 1 7uF 0 luF w fif002I I R2B6 CR3B1 I Lc H56 1 2 l CRSl 3 S lf0 1 7 1K T0 17uF I L569 I I CR l 39 R 31 Q515 I T 9 R3 Bl l 1 BmH 17 n R386 17111K H CR3es c37g L i R383 393 1 3e9 I...

Page 118: ..._________ Tt1 0 n lilc 11 c JI r __ Q ie121 CR18 t E fl Wv T e Pe3 u I 2 VOLTS _ 136 a a Ly c ee l pe2 ie 7uF 2 tVOL TS a e t R3Be y CR386 3831 R t86 0 1 uF 2200 383K VR 83 n e 2v U R tS t ___fl 1 IQ1...

Page 119: ...SmH 1 n VOLTS t 2CJ ct 1 H 1 I CR385 C37Q T320 rs SHOWN ON 180uF R1 30 REGULA TOR BO Q551 11 tl1J 670 6 1 29 01 n C535 C1 35 C235 U 1 7uF e tuF 0 01uF CR565 I e VR t83 I e 2v Rsse n R B _j 1 11i J 1...

Page 120: ..._ l Cl 15 2 I 12 VOLTS i uF E ET l ff s91 1 10 U i i 1 c a 5 2 VOLTS I t c 4 2 3 e c J R75 j i r2 1K Q75 H 8 Sn 8 IF 5 y 12 VOLTS 1r b n P75 U t el SON I I _A CR1001 CRtB1212 LIBBI 211 7uH ii a x Met...

Page 121: ...3Q0uF CR231 IL3 Jt F R235 7 1 t 70 L__L n R31 7 LI VOLT l _ N C c i c 1 C 2 1K L d s t Mr i i c _ _ _ _ _ _ _ _ _ _ _ _ _ 1 __ _ _II u 1e s 2 i CR1 2 S Vv _ fll 12 VOLTS I I I CR100t CR1002 L1001 20 7...

Search results

Summary of Contents for 620-0295-00

Reviews:

Related manuals for 620-0295-00

Brands by name

Popular brands

Tektronix 620-0295-00, Service Manual

Search results

Summary of Contents for 620-0295-00

Reviews:

Related manuals for 620-0295-00

Brands by name

Popular brands