HP 6260B Operator’S, Organizational, Direct Support And General Support Maintenance Manua L Download Page 53

Page: 53 / 96

TM 11-6625-2958-14&P

be set much closer to the operating
output voltage of the supply.

5-109 MAXIMUM CROWBAR TRIP VOLTAGE

5-110 To adjust the maximum voltage at which the

crowbar trips, proceed as follows:

a. Rotate A5R125 (OVERVOLTAGE ADJUST)

and CURRENT controls fully clockwise.

b. Disconnect either end of R72 (TP70 or

TP71; see Figure 7-10).

Connect decade resistance box in place

of R95 (mounted on standoffs on main circuit
board).

d. Turn on supply and adjust VOLTAGE con-

trols for output voltage shown below:

Model

Value

6259B

12Vdc

6260B

12Vdc

Model

Value

6261B

23Vdc

6268B

45Vdc

6269B

45Vdc

Adjust decade resistance box until crow-

bar trips (amber OVERVOLTAGE lamp lights up).

Replace decade resistance with appro-

priate value resistor in R95 position and reconnect
resistor R72.

Maximum crowbar trip voltage is

now set at voltage given in Step (d).

5-111 CROWBAR DISABLEMENT

5-112 To disable the crowbar completely, discon-
nect either end of R98 (TP97 or TP98). This resis-

tor is mounted on the main circuit board (see Fig-
ure 7-10).

5-22

Summary of Contents for 6260B

Page 1: ...ERATOR S ORGANIZATIONAL DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST FOR POWER SUPPLY PP 7545 U HEWLETT PACKARD MODEL 6269B NSN 6130 00 148 1796 HEADQUARTERS DEPARTMENT OF THE ARMY 21 AUGUST 1980 ...

Page 2: ...L P O W E R P U L L P U S H O R L I F T T H E P E R S O N T O S A F E T Y U S I N G A W O O D E N P O L E O R A R O P E O R S O M E O T H E R I N S U L A T I N G M A T E R I A L S E N D F O R H E L P A S S O O N A S P O S S I B L E A F T E R T H E I N J U R E D P E R S O N I S F R E E O F C O N T A C T W I T H T H E S O U R C E O F E L E C T R I C A L S H O C K M O V E T H E P E R S O N A S H O R ...

Page 3: ...Simply tear out the self addressed form fill it out as shown on the sam ple fold it where shown and drop it in the mail If there are no blank DA Forms 2028 2 in the back of your manual use the standard DA Form 2028 Recommended Changes to Publications and Blank Forms and forward to Commander US Army Communications and Electronics Materiel Readiness Command ATTN DRSEL ME MQ Fort Monmouth NJ 07703 In...

Page 4: ...2 3 23 3 32 3 41 3 46 3 50 3 55 3 59 3 60 3 62 3 65 3 67 Optional Operating Modes Remote Programming Constant Voltage Remote Programming Constant Current Remote Sensing Auto Parallel Operation Auto Series Operation Auto Tracking Operation Special Operating Considerations Pulse Loading Output Capacitance Reverse Voltage Loading Reverse Current Loading Page No 3 3 3 3 3 4 3 5 3 6 3 7 3 8 3 8 3 8 3 9...

Page 5: ...I n t r o d u c t i o n Maintenance Allocation Chart Tools and Test Equipment Required Remarks LIST OF TABLES Page No A 1 D 1 D 1 D 3 D 4 D 5 Page No Specifications 1 3 Test Equipment Required 5 1 Reference and Bias Voltages 5 10 Overall Troubleshooting 5 10 Feedback Loop Isolation 5 12 Series Regulator Troubleshooting High Voltage Condition 5 13 Series Regulator Troubleshooting Low Voltage Condit...

Page 6: ...ng Locus of a CV CC Power Supply 4 2 4 3 Triac Phase Control Over AC Input Amplitude 4 3 4 4 Preregulator Control Circuit Waveforms 4 4 5 1 Differential Voltmeter Substitute Test Setup 5 2 5 2 Constant Voltage Load Regulation Test Setup 5 3 5 3 Ripple Test Setup 5 4 5 4 Noise Spike Measurement Test Setup 5 5 5 5 Transient Recovery Time Test Setup 5 6 5 6 Transient Recovery Time Waveforms 5 6 5 7 C...

Page 7: ...Report DISREP SF 361 as prescribed in AR 55 38 NAVSUPlNST 4610 33B AFR 75 18 MCO P4610 19C and DLAR 4500 15 0 4 REPORTING EQUIPMENT IMPROVEMENT RECOMMENDATIONS EIR EIR s will be prepared using SF 368 Quality Defi ciency Report Instructions for preparing EIR s are provided in TM 38 750 the Army Mainten ance Management System El R s should be mailed direct to Commander US Army Communication and Elec...

Page 8: ...eset limits 1 3 The power supply contains an added feature for protection of delicate loads A limit can be set on the output voltage If this limit is exceeded the output will automatically be shorted 1 4 The power supply has rear output terminals Either the positive or negative output terminal may be grounded or the power supply can be operated floating at up to a maximum of 300 volts above ground...

Page 9: ...l A single control that replaces the coarse voltage control and allows accurate resetting of the output voltage 020 021 022 Option No Description 014 Three Digit Graduated Decadial Cur rent Control A single control that replaces the coarse current control and allows accurate resetting of the output current Rewire for 115Vac Input 6260B only Consists of replacing the input power transformer and cir...

Page 10: ...tal drift for 8 hours following 30 minutes warm up under constant ambient conditions Constant Current Less than 0 03 plus 10mA total drift for 8 hours following 30 minutes warm up under constant ambient conditions TRANSIENT RECOVERY TIME Less than 50µsec is required for output voltage recovery in constant voltage operation to within 10mV of the nominal output voltage following a S ampere change in...

Page 11: ...g air can reach the sides of the instrument when it is in operation It should be used in an area where the ambient temperature does not ex ceed 55 C 2 11 OUTLINE DIAGRAM 2 12 Figure 2 1 illustrates the outline shape and dimensions of Models 6259B 6260B 6261B 6268B and 6269B 2 13 RACK MOUNTING 2 14 This instrument is full rack size and can be easily rack mounted in a conventional 19 inch rack panel...

Page 12: ...eversing pro cedure of Step a d Unsolder wire connected to terminal 5 of power transformer T1 see Figure 7 4 and solder it instead to terminal 4 of transformer see Figure 2 3 B Figure 2 3 Power Transformer Primary Connections for 208Vac and 115Vac Operation Model 6259B 6261B and 6268B 2 19 CONNECTIONS FOR 208 VOLT OPERATION Model 6260B and 6269B Option 027 2 20 To convert Model 6260B or 6269B to o...

Page 13: ... terminal of bias transformer A3T2 see Figure 7 2 Solder wire from circuit breaker to 115V terminal of transformer and solder wire from fan to 0V ter minal of transformer see Figure 2 2 C Note that Figure 2 5 RFI Choke A2L1A A2L1B Connections for 115Vac Operation Model 6259B 6260B 6261B and 6268B fan B2 is not used in Model 6259B e Re install RFI assembly by reversing pro cedure of Step b f Unsold...

Page 14: ...rs third conductor grounded and be of sufficient wire size to handle the input current drawn by the supply see Paragraph 2 16 Note that when the supply is operated from a 115Vac source the input current is approximately double that shown in Paragraph 2 16 2 29 REPACKAGING FOR SHIPMENT 2 30 To insure safe shipment of the instrument it is recommended that the package designed for the instrument be u...

Page 15: ...utput current is indicated on ammeter g Remove short circuit and read following paragraphs before connecting actual load to supply 3 4 The power supply is designed so that its mode of operation can be selected by making strapping connections between particular terminals on the ter minal strip at the rear of the power supply The ter minal designations are stenciled in white on the power supply belo...

Page 16: ...t voltage of the supply a transient in the output will falsely trip the crowbar It is recommended that the crowbar be set higher than the output voltage by 5 of the out put voltage plus 2 volts However If occasional crowbar tripping on unloading can be tolerated the crowbar trip point can be set much closer to the operating out put voltage of the supply 3 14 CONNECTING LOAD 3 15 Each load should b...

Page 17: ...tance Programming Constant Voltage TM 11 6625 2958 14 P 3 26 The output voltage of the supply should be 15mV 5mV when zero ohms is connected across the programming terminals If a zero ohm voltage closer to zero than this is required it may be achieved by inserting and adjusting R110 as dis cussed in Paragraph 5 83 or if the instrument is equipped with Option 020 by adjusting potentiome ter R113 as...

Page 18: ... be achieved by either adjusting R30 as discussed in Paragraph 5 97 or if the instrument is equipped Figure 3 6 Remote Resistance Programming Constant Current with Option 021 by adjusting potentiometer R116 as discussed in Paragraph 5 98 The output current of the supply when zero ohms is placed across the programming terminals may be set to exactly zero by either inserting and adjusting R117 as di...

Page 19: ...ng voltage source Es should be such that the value of ES RR is equal to or greater than 2 5mA 3 39 External resistors Rp and RR should have sta ble low noise and low temperature coefficient less than 30ppm per degree Centigrade character istics in order to maintain the stability and temper ature specifications of the Power supply Reference resistor RR should not exceed 10K Note that it is possible...

Page 20: ...nfiguration Refer to Paragraph 5 27 for discussion of transient response measurement b If performing adjustment in step a above does not remove oscillation disconnect output capacitor A3C3 and connect a capacitor having sim ilar characteristics approximately the same capa citance the same voltage rating or greater and having good high frequency characteristics direct ly across load using short lea...

Page 21: ...GGER terminals on the rear panel of the master supply Correct polari ty must be observed in connecting the crowbars to gether The overvoltage trip point is adjusted on the master supply The OVERVOLTAGE ADJUST po tentiometer on the slave supply should be set to maximum clockwise so that the master crowbar will control the slave 3 50 AUTO SERIES OPERATION Figure 3 11 3 51 Two or more power supplies ...

Page 22: ...e Auto Tracking configuration is used when several different voltages referred to a common bus must vary in proportion to the setting of a particular instrument the control or master A fraction of the master s output voltage is fed to the comparison amplifier of the slave supply thus controlling the slave s output The master must have the largest output voltage of any power supply in the group It ...

Page 23: ...decreases with increasing frequency b The recovery time of the output voltage is longer for load resistance changes TM 11 6625 2958 14 P c A large surge current causing a high pow er dissipation in the load occurs when the load re sistance is reduced rapidly 3 65 REVERSE VOLTAGE LOADING 3 66 A diode A4CR106 is connected across the output terminals Under normal operation condi tions the diode is re...

Page 24: ... The control circuit continuously samples the output voltage the input line voltage from A3T2 and the voltage across the series regulator and on the basis of these inputs determines at what time each firing pulse is generated 4 4 The phase adjusted output of the triac is ap plied to the power transformer where it is stepped down and coupled to a full wave rectifier and filter The preregulated dc c...

Page 25: ...age control setting When a load resistance is applied to the output terminals of the power supply the output current increases while the output voltage remains con stant point D thus represents a typical constant voltage operating point Further decreases in load resistance are accompanied by further increases in IOUT with no change in the output voltage until the output current reaches Is a value ...

Page 26: ...the half cycle the ac level applied to the power trans former is relatively high When the triac is fired later during the half cycle the ac level is rela tively low 4 20 Normally the ac input signal must be at a certain minimum potential before the triac will con duct However A2R1 and A2C1 provide a holding current that allows the triac to conduct at any time during the ac input cycle RFI choke A2...

Page 27: ...ches approximately 11 volts The above action causes the small positive spike that appears across the windings of pulse transform er at T70 at reset time 4 27 SERIES REGULATOR AND DRIVER 4 28 The series regulator consists of transistors A4Q103 through A4Q108 connected in parallel The transistors serve as the series or pass element which provides precise and rapid control of the out put Resistors A4...

Page 28: ... amplifier limits the cur rent through the programming resistors during rapid voltage turn down Diode CR7 prevents excessive current drain from the 6 2 volt reference supply TM 11 6625 2958 14 P during rapid down programming diodes CR5 and CR6 prevent excessive voltage excursions from over driving the differential amplifier Capacitor C2 prevents the gain of the feedback loop from changing during m...

Page 29: ...ation results in a constant voltage acress and consequently a con stant current through the current pullout resistors R3 R4 and R5 4 46 MIXER AND ERROR AMPLIFIERS 4 47 The mixer and error amplifiers amplify the error signal from the constant voltage or constant current input circuit to a level sufficient to drive the series regulating transistors Mixer amplifier Q41 receives the error voltage inpu...

Page 30: ...lar function for the series regulator CR36 initially couples a pos itive voltage to Q41 where it is inverted and ap TM 11 6625 2958 14 P plied to the series regulator This negative voltage keeps the regulator cut off untill C35 charges up Diode CR37 provides a discharge path for C35 when the supply is turned off 4 59 REFERENCE REGULATOR 4 60 The reference circuit is a feedback power supply similar...

Page 31: ...s of the supply Poten tiometer R106 permits calibration of the voltmeter 4 68 ADDITIONAL PROTECTION FEATURES 4 69 The supply contains several special pur pose components which protect the supply in the event of unusual circumstances One of these components is diode A4CR106 Connected across the output terminals of the supply it prevents in ternal damage from reverse voltages that might be applied a...

Page 32: ...ty 1mV full scale min Voltmeter Input impedance 10M Ω rein Oscilloscope Sensitivity and bandwidth 100µV cm and 400KHz for all measurements except noise spike 5mV sensitivity and 20 MHz band width for noise spike measure ment Measure dc voltages calibration procedures Measure ripple display transient recovery wave form measure noise spikes 3420A B See Note on Page 5 2 140A with 1423A time base and ...

Page 33: ...z single phase input power source If the correct result is not obtained for a particular check do not adjust any internal controls proceed to troubleshooting Paragraph 5 5 1 5 7 CONSTANT VOLTAGE TESTS 5 8 If maximum accuracy is to be obtained in the following measurements the measuring devices must be connected as close to the output terminals as possible This is particularly important when measur...

Page 34: ...ut power source and power supply power input c Adjust variable auto transformer for 207 volts a c input d Turn CURRENT controls fully clockwise e Turn on supply and adjust VOLTAGE con trols until front panel meter indicates exactly maxi mum rated output voltage f Read and record voltage indicated on dif ferential voltmeter g Adjust variable auto transformer for 253V ac input h Reading on different...

Page 35: ... provided cer tain precautionary measures are taken One meth od of minimizing the effects of ground current IG flow is to ensure that both the supply and the test instrument are plugged into the same ac power buss 5 20 To minimize pick up a twisted pair or pref erably a shielded two wire cable should be used to connect the output terminals of the power supply to the vertical input terminals of the...

Page 36: ... twO coax cables must be substituted for the shielded two wire cable 2 Impedance matching resistors must be in cluded to eliminate standing waves and cable ring ing and capacitors must be inserted to block the dc current path 3 The length of the test leads outside the coax is critical and must be kept as short as pos sible the blocking capacitor and the impedance matching resistor should be connec...

Page 37: ...ollows a Connect test setup shown in Figure 5 5 b Turn CURRENT controls fully clockwise c Turn on supply and adjust VOLTAGE con trols until front panel ammeter indicates 5 amps output current d Close line switch on repetitive load switch setup e Set oscilloscope for internal sync and lock on either positive or negative load transient spike f Set vertical input of oscilloscope for ac coupling so th...

Page 38: ...hould be placed near the supply to verify that the ambi ent temperature remains constant during the period of measurement The supply should be put in a lo cation immune from stray air currents open doors or windows air conditioning vents if possible the supply should be placed in an oven which is held at a constant temperature Care must be taken that the measuring instrument has a stability over t...

Page 39: ...if ferential voltmeter e Short circuit load resistor RL f Reading on differential voltmeter should not vary from reading recorded in Step d by more than the following 6259B 110µv 6260B 110µv 6261B 110µv 6268B 134µv 6269B 120µV Figure 5 8 Constant Current Load Regulation Test Setup 5 46 Line Regulation Definition The change IOUT in the static value of dc output current re sulting from a change in a...

Page 40: ...s 6268B 334µVrms 6269B 250µVrms 5 51 TROUBLESHOOTING 5 52 Before attempting to troubleshoot this instru ment ensure that the fault is with the instrument and not with an associated circuit The perform ance test Paragraph 5 5 enables this to be deter mined without having to remove the instrument from the cabinet 5 53 A good understanding of the principles of op eration is a helpful aid in troublesh...

Page 41: ...e and Bias Voltages Refer to Schematic and Figure 7 10 for test point locations STEP METER METER NORMAL NORMAL COMMON POSITIVE VDC RIPPLE P P PROBABLE CAUSE 1 S TP63 12 4 7 2 0mV CR61 CR62 Q60 Q61 Q62 Q63 2 S TP64 6 2 5 0 5mV VR60 VR61 Q62 Q63 3 S TP65 6 2 5 2 0mV VR60 VR61 Q62 Q63 4 S TP66 11 15 2 0V C44 CR53 CR54 5 S TP67 4 0 12 5 0 8V C44 CR53 CR54 CR45 CR46 CR47 CR48 CR49 6 S TP68 2 4 12 5 0 4...

Page 42: ... or A5R123 A5R124 noisy VR60 or VR61 c Integrated circuit Z1 defective d CR4 CR5 CR6 or CR21 leaky e R2 R3 R4 R5 R6 R22 R30 R31 C2 noisy or drifting Cannot reach maximum output a Q20 shorted One or more of series regulator transistors A4Q103 through A4Q108 open 5 58 Table 5 3 contains symptoms and probable causes of many possible troubles If either high or low output voltage is a symptom Table 5 4...

Page 43: ...Proceed to Step 3 b Off b Check setting of overvolt High voltage output age adjust A5R125 Check A4CR110 for open Q91 for open Q92 for short Series regulator loop in high voltage con dition Proceed to Step 3 c off c Check overvoltage adjust Low voltage output A5R125 Check A4CR110 for short Check Q20 for for short Proceed to Step 3 3 Isolate fault to either series a Output voltage normal a Check eac...

Page 44: ...hrough a 1K Ω resistor a Output voltage remains high b Output voltage decreases a Q42 open b Remove resistor Pro ceed to Step S 4 s Check turn off of mixer am plifier Q41 by connecting base TP40 to 11 volt sup ply TP66 through a 1K Ω resistor a Output voltage remains high b Output voltage decreases a Q41 shorted b Remove resistor Pro ceed to Step 6 6 Check turn off of constant voltage comparator Z...

Page 45: ...0 b Output voltage remains low b Reconnect lead and proceed to Step 6 6 Check conduction of mixer a Output voltage remains low a Q41 or CR40 open Q40 amplifier Q41 by connecting shorted base TP40 to S terminal b Output voltage rises b Remove short Proceed to Step 7 7 Check conduction of con a Output voltage remains low a Z1 defective R1 stant voltage comparator Z 1 shorted by shunting R110 with a ...

Page 46: ...val Care must be taken that rear barrier strip clears opening in rear panel 5 65 Front Panel A5 Removal To remove the front panel proceed as follows a Unplug unit turn supply upside down and remove four screws holding handlers to front panel PROBABLE CAUSE a Defective T70 b Defective Q72 Q73 CR76 or C71 pro ceed to Step 3 a Defective Q71 C70 C72 CR74 CR75 R82 R75 or R78 b CR78 defective Pro ceed t...

Page 47: ...ve two screws holding current sam pling resister A4R123 to topmost two portions of heat sink If necessary the resistor may be unsoldered at this point e Remove mounting nuts from A4CR106 on left side of heat sink and from A4CR108 on right side of heat sink Remove mounting nuts bolts and shoulder washers on transistor A4Q102 on right side of heat sink see Figure 7 5 f Slide top section of heat sink...

Page 48: ... reference circuit line operation Q70 Overvoltage limit Limiting action and level Q71 Q72 Preregulator control cir Output voltage rippIe imbalance and Q73 R70 R82 cuit preregulator waveforms Q90 Q91 Crowbar Crowbar action trip voltage voltage A5R125 Q92 across series regulator when tripped A4Q103 thru Series regulator CV CC load regulation A4Q108 A42CR1 Preregulator Output voltage R7O CR1 CR20 CV ...

Page 49: ...ollows a Connect load resistor of value shown in Figure 5 2 b Turn on instrument and allow it to come up to normal operating temperature about 30 min utes c Turn instrument off Wait one minute for power supply capacitors to discharge completely d Insert sharp pointed object pen point or awl into small indentation near top of round black plastic disc located directly below meter face e Rotate plast...

Page 50: ...stance or unity gain TM 11 6625 2958 14 P voltage programming a Perform Steps a and b in Paragraph 5 83 b Rotate CURRENT controls fully clockwise and turn on supply c If reading on differential 1 voltmeter is not exactly zero volts adjust potentiometer R113 la beled VOLTAGE ZERO and accessible through hole in rear panel until reading is exactly zero 5 86 Option 020 with non unity gain voltage pro ...

Page 51: ...tly zero volts adjust potentiometer R119 labeled CURRENT ZERO and accessible through hole in rear panel until reading is exactly zero 5 95 Option 021 with non unity gain voltage pro gramming a Perform Steps a and b in Paragraph 5 92 b Rotate VOLTAGE controls fully clockwise and turn on supply c If reading on differential voltmeter is not exactly zero volts adjust potentiometer R116 la beled CURREN...

Page 52: ...to transformer for 230Vac input to supply Connect dc voltmeter acress series reg ulator TP102 and TP103 d Turn CURRENT controls fully clockwise e To check voltage drop across regulator at low output voltage short circuit load resistor and adjust VOLTAGE controls for maximum rated output current on front pane 1 ammeter f Adjust R70 until voltmeter reads 3 5 0 3Vdc g To check the voltage drop at hig...

Page 53: ...circuit board d Turn on supply and adjust VOLTAGE con trols for output voltage shown below Model Value 6259B 12Vdc 6260B 12Vdc Model Value 6261B 23Vdc 6268B 45Vdc 6269B 45Vdc e Adjust decade resistance box until crow bar trips amber OVERVOLTAGE lamp lights up f Replace decade resistance with appro priate value resistor in R95 position and reconnect resistor R72 Maximum crowbar trip voltage is now ...

Page 54: ...nce index are source coded XD and shall be procured using the FSCM and the NPN at the near est wholesale level Table 6 1 Reference Designators A assembly E miscellaneous B blower fan electronic part C capacitor F fuse CB circuit breaker J jack jumper CR diode K relay DS device signal L inductor ing lamp M meter Table 6 1 Reference Designators Continued P plug Q transistor R resistor s switch T tra...

Page 55: ...Nuys Calif 07137 Transistor Electronics Corp Minneapolis Minn CODE NO MANUFACTURER ADDRESS 07138 Westinghouse Electric Corp Electronic Tube Div Elmira N Y 07263 Fairchild Camera and Instrument Corp Semiconductor Div Mountain View Calif 07387 Birtcher Corp The Los Angeles Calif 07397 Sylvania Electric Prod Inc Sylvania Electronic Systems Western Div Mountain View Calif 07716 IRC Div of TRW Inc Burl...

Page 56: ...mer City Pa 59730 Thomas and Betts Co Philadelphia Pa 61637 Union Carbide Corp New York N Y 63743 Ward Leonard Electric Co Mt Vernon N Y CODE NO MANUFACTURE R ADDRESS 70563 Amperite Co Inc Union City N J 70901 Beemer Engrg Co Fort Washington Pa 70903 Belden Corp Chicago III 71218 Bud Radio Inc Willoughby Ohio 71279 Cambridge Thermionic Corp Cambridge Mass 71400 Bussmann Mfg Div of McGraw Edison Co...

Page 57: ...3298 Bendix Corp Electric Power Div Eatontown N J 83330 Herman H Smith Inc Brooklyn N Y 83385 Central Screw Co Chicago Ill 83501 Gavitt Wire and Cable Div of Amerace Esna Corp BrookfieId Mass CODE NO MANUFACTURER ADDRESS 83508 Grant Pulley and Hardware Co West Nyack N Y 83594 Burroughs Corp Electronic Components Div Plainfield N J 83835 U S Radium Corp Morristown N J 83877 Yardeny Laboratoriess In...

Page 58: ...28480 1854 0071 6 Q41 42 SS PNP Si 28480 1853 0099 Q60 SS PNP Si 1 28480 1853 0041 1 Q61 Q63 SS NPN Si 28480 1854 0071 Q70 71 SS PNP Si 28480 1853 0099 Q72 73 SS NPN Si 28480 1854 0071 Q90 SS PNP Si 28480 1853 009 9 Q91 92 SS NPN Si 09182 1854 0071 R1 fkd met film 1M Ω 1 Ω 1 Type CEB T O 07716 0757 0344 1 R2 fxd comp 160 Ω 5 Ω 2 EB 1615 01121 0686 1615 1 R3 fxd comp selected 5 Ω 2 Type EB obd 0112...

Page 59: ...69B fxd met film 3 4k Ω 1 1 8W 1 Type CEA T O 07716 0698 4440 1 R70 var ww 5k Ω 10 Ramp Adjust Type 110 F4 11236 2100 1824 R71 fxd met film 12k Ω 1 1 8W 1 Type CEA T O 07716 0698 5088 1 R72 fxd met film 45k Ω 1 1 8W 1 Type CEA T O 07716 0698 5091 1 R73 fxd comp 12k Ω 5 W 1 EB 1235 01121 0686 1235 1 R74 fxd comp 82k Ω 5 W 1 EB 8235 01121 0686 8235 1 R75 76 fxd met film 4 75k Ω 1 1 8W 2 Type CEA T O...

Page 60: ...ION BOARD A3 Interconnection Board Assembly 1 28480 5060 7906 C3 fxd elect 5000µF 45Vdc 1 28480 0180 1919 1 J1 P C Board Edge Connector 1 64 718 22 76530 1251 1887 R120 fxd comp 51k Ω 5 W 1 EB 5135 01121 0686 5135 1 T2 Bias Transformer 1 28480 9100 26O7 1 A4 HEAT SINK ASSEMBLY A4 Heat Sink Assembly 1 28480 06269 60004 B1 Fan 1 WS2107F 97702 3160 0056 1 C1 C4 fxd ceramic 05µF 400V 4 28480 0150 0052...

Page 61: ...C101 C104 fxd elect 50 000µF 50Vdc 4 28480 0180 2346 1 C110 111 fxd ceramic 01µF 300Vdc 2 41C21A5 56289 0160 2568 1 T1 Power Transformer 1 28480 06269 80091 1 CHASSIS ASSEMBLY MECHANICAL Chassis Assembly Welded 1 28480 5060 6186 Bracket RFI Filter Mounting 2 28480 5000 6257 Standoff Insulated RFI Filter Mounting 4 28480 0380 0902 Grommet 5 8 Internal Chassis Divider 1 1661 73734 0400 0062 Cover 2 ...

Page 62: ...at Sink 1 28480 5000 6256 Bracket Mtg Heat Sink Chassis 1 28480 5000 6255 Insulator Strip Heat Sink Divider 2 28480 5020 5787 1 Washers Nylon Heat Sink Spacing 12 28480 3050 0455 3 Rod Insulated Spacing 8 3 4 Lg Threaded 6 32 4 8203 PH0632 06540 0380 0879 1 Rubber Bumper Heat Sink Protection 1 28480 0403 0002 1 Insulator Mica Q101 102 2 734 08530 0340 0174 2 Shoulder Washer Q101 102 4 28480 2190 0...

Page 63: ...PTION 013 Decadial Voltage Control R3 A5R121 fxd comp Selected 5 W var ww 10k Ω 5 10 Turn Decadial Control 01121 28480 2100 1866 07716 1140 0020 1 1 1 RD 411 OPTION 014 Decadial Current Control 01121 28480 2100 1863 07716 1140 0020 fxd comp Selected 5 W var ww 200 Ω 5 10 Turn Decadial Control 1 Type EB obd 1 1 RD 411 R30 A5R123 1 1 1 1 1 07716 0757 0473 28480 2100 0806 07716 0757 0270 7124 1721 OP...

Page 64: ...3 VAR WW 5KΩ 4 28480 2100 0806 1 R114 FXD MET FILM 249KW 1 1 8W 1 TYPE CEA T O 07716 0757 0270 1 R115 FXD MET FILM 23KW 1 1 8W 1 TYPE CEA T O 07716 0698 3269 1 R116 VAR WW 5KΩ 28480 2100 0806 R118 FXD MET FILM 200KW 1 1 8W 1 TYPE CEA T O 07716 0757 0472 1 R119 VAR WW 5KW 28480 2100 0806 LABEL IDENTIFICATION 1 28480 7124 1721 OPTION 027 208VAC INPUT LABEL IDENTIFICATION 1 28480 7124 1717 6269B 6 11...

Page 65: ...061 2906 0686 4345 28480 5905 00 279 2518 1450 0048 28480 6210 00 761 8898 0686 5125 28480 5905 00 279 2019 150D105X9035A2 56289 5910 00 104 0144 0689 1815 28480 5905 00 403 9066 150D475X9035B2 56289 5910 00 177 4300 0698 0001 28480 5905 00 682 4247 1661 73734 5325 00 301 8656 0698 3338 28480 5905 00 431 6842 1810 0042 28480 5905 00 450 0107 0698 3430 28480 5905 00 420 7136 1853 0041 28480 5961 00...

Page 66: ...00 929 0485 2100 1824 28480 5905 00 892 9626 2100 1857 28480 5905 00 575 8853 2100 1866 28480 5905 00 110 0282 242E1025 56289 5905 00 504 4892 243E5005 56289 5905 00 950 5551 2950 0034 28480 5310 00 903 8729 30D505G050BB2 56289 5910 00 081 6159 3160 0056 28480 4140 00 758 6113 422 13 11 013 71785 5935 00 917 9079 599 124 72765 6210 00 761 8898 734 08530 5970 00 840 5109 6 13 ...

Page 67: ...d at vari power supply Included are ous points in the preregulator control circuit a Component location diagrams Figures 7 1 c Schematic diagram Figure 7 1 1 illustrat through 7 8 and 7 10 showing the physical loca ing the circuitry for the entire power supply Volt tion and reference designators of parts mounted on ages are given adjacent to test points which are the printed circuit boards and cha...

Page 68: ... g u r e 7 1 A2 RFI Assembly Component Location Diagram Shown removed from supply with assembly cover off Figure 7 2 A3 Interconnection Circuit Board Assembly Component Location Diagram Shown with A2 RF I assembly removed 7 2 ...

Page 69: ...F i g u r e 7 3 T o p F r o n t C h a s s i s A s s e m b l y C o m p o n e n t L o c a t i o n D i a g r a m 7 3 TM 11 6625 2958 14 P ...

Page 70: ...Figure 7 4 Bottom Front Chassis Assembly Component Location Diagram 7 4 TM 11 6625 2958 14 P ...

Page 71: ...F i g u r e 7 5 B o t t o m R e a r C h a s s i s A s s e m b l y C o m p o n e n t L o c a t i o n D i a g r a m 7 5 TM 11 6625 2958 14 P ...

Page 72: ...lator Emitter Resistor Assembly Component Location Diagram Circuit board is part of A4 heat sink assembly Figure 7 7 A4 Heat Sink Assembly Component Location Diagram Top view assembly removed from supply 7 6 TM 11 6625 2958 14 P ...

Page 73: ...XIMUM RATED OUTPUT VOLTAGE 230 VAC INPUT NO LOAD CONNECTED AND CURRENT CONTROLS FULLY CLOCKWISE 2 SCOPE DC COUPLED AND REFERENCED TO TP103 INBOARD SIDE OF CURRENT SAMPLING RESISTOR UNLESS OTHERWISE SHOWN 3 FOR CLARITY WAVEFORMS ARE NOT DRAWN TO SCALE Figure 7 9 Preregulator Control Circuit Waveforms 7 7 TM 11 6625 2958 14 P NOTES ...

Page 74: ...Figure 7 10 This publication does not contain Figure 7 10 Figure 7 10 does not exist in paper or digital form NOT DIGITIZED ...

Page 75: ...and 9 Supply B u l l e t i n s and Lubrication Orders Index of Modification Work Orders The Army Maintenance Management System TAMMS Administrative Storage of Equipment Procedures for Destruction of Electronics Materiel to Prevent Enemy Use Electronics Command Calibration Requirements for the Maintenance of Army Materiel Safety Precautions for Maintenance of Electrical Electronic Equipment A 1 ...

Page 76: ...ws 1 Figure number Indicates the figure num ber of the illustration on which the item is shown 2 Item number The number used to iden tify item called out in the illustration b National Stock Number Indicates the Na tional stock number assigned to the item and which will be used for requisitioning c Description Indicates the Federal item name and if required a minimum description to iden tify the i...

Page 77: ...958 14 P SECTION III BASIC ISSUE ITEMS 1 2 3 4 5 6 7 ILLUSTRATION NATIONAL DESCRIPTION LOCATION USABLE QTY QUANTITY A B STOCK ON REQD FIG ITEM NUMBER CODE RCVD DATE NO NO PART NUMBER FSCM 1 1 N A 6130 00 148 1796 PP 7545 U 28480 1 TM 11 6625 2958 14 P 1 B 2 ...

Page 78: ...equipments used in precision measurement Consists of compari sons of two instruments one of which is a certified standard of known accuracy to detect and adjust any discrepancy in the accuracy of the instrument being compared g install The act of emplacing seating or fix ing into position an item part module compo nent or assembly in a manner to allow the proper functioning of the equipment or sys...

Page 79: ... in addition to the time required to perform the specific tasks identified for the maintenance functions authorized in the maintenance allocation chart Subcolumns of column 4 are as follows C Operator Crew 0 Organizational F Direct Support H General Support D Depot e Column 5 Tools and Equipment Column 5 specifies by code those common tool sets not individual tools and special tools test and sup p...

Page 80: ...SECTION II MAINTENANCE ALLOCATION CHART TM 11 6625 2958 14 P D 3 ...

Page 81: ... G 5180 00 064 5178 3 H D TOOL KIT ELECTRONIC EQUIPMENT TK 105 G 5180 00 610 8177 4 H D GENERATOR SIGNAL SG 321 U 6625 00 880 5791 5 H D MULTIMETER AN USM 223 U 6625 00 999 7465 6 H D MULTIMETER ELECTRONIC ME 260 U 6625 00 913 9781 7 H D OSCILLOSCOPE AN USM 281 6625 00 106 9622 8 H D RESISTANCE BRIDGE ZM 4 U 6625 00 500 9370 9 H D TRANSFORMER VARIABLE CN 16 U 5950 00 235 2086 10 H D VOLTMETER DIGI...

Page 82: ...REFERENCE CODE A B C D SECTION IV REMARKS TM 11 6625 2958 14 P POWER SUPPLY PP 7545 U REMARKS Exterior Operational Interior All D 5 ...

Page 83: ...Figure 7 11 Schematic Diagram Model 6269B ...

Page 84: ...he inboard side of CR1 C2 and R2 prevent the misfiring turning on too soon of triac CR1 by slowing the rate of voltage increase across L1A B in series with T1 when the triac turns off In the Replaceable Parts list under AZ RFI Filter Assembly C2 Add 0 047µF 600V HP Part No 0160 0005 R2 Add 220 Ω 5 2W HP Part No 0811 1763 In the Replaceable Parts Iist make the following changes CR1 Delete Mfr Part ...

Page 85: ...247 5000 6250 5060 6186 CHANGE 7 with the secondary winding of the new Pulse Generator Pulse Transformer T70 HP Part No In the replaceable parts table under AI Main P C 5080 7192 as shown below Board Electrical and on the schematic in the Overvoltage Protection Crowbar circuit make the following changes C91 Add 0 0047µF 200V HP Part No 0160 0157 R99 Change to 10k Ω 5 W HP Part No 0686 1035 T70 T90...

Page 86: ...he master crowbar to trip the slave crowbar s when two or more units are connected in parallel In the parts list under Al Main Printed Circuit Board and on the schematic change A1C90 to 47µF 25Vdc HP Part No 0160 0174 Also add resistor A1R120 4 7K W HP Part No 0758 0005 Connect A1R20 in parallel with A1Z2C in the Overvoltage Protection Crowbar Circuit on schematic The following change prevents ser...

Page 87: ...atic replaces the A2 Filter portion of the schematic shown in Change 11 REF HP DESIG DESCRIPTON PART NO A2 RFI Filter Assembly C1 C2 06269 60010 fxd metalized paper 0 1µF 250Vac C3 fxd metalized paper 047µF 250v 0160 4065 C4 0160 4323 fxd mica 5000pF 1kV CR1 0160 0899 Thyristor Si Triac L1 Filter choke 20A 1884 0248 R1 R2 5080 1782 fxd metal oxide 1 5k Ω 2W R4 0698 3338 fxd metal oxide 220 Ω 2W RV...

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Page 90: ... 2 SAAD 20 DARCOM 1 TOAD 14 TECOM 2 SHAD 2 OS Maj Cored 2 USA Dep 1 USACC 2 Sig Sec USA Dep 1 HISA Ft Monmouth 21 Units org under fol TOE Armies 1 2 copies each unit USASIGS 10 29 207 Svc Colleges 1 29 610 Ft Richardson CERCOM Oft 1 1 copy each unit Ft Carson 5 29 134 Ft Gillem 10 29 136 WSMR 1 ARNG None USAR None For explanation of abbreviations used see AR 310 50 E C MEYER General United States ...

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Page 94: ...THE METRIC SYSTEM AND EQUIVALENTS ...

Page 95: ...PIN 046413 000 ...

Page 96: ...e it They did not even scan it Why should they get your money Why are not letting you give those free manuals to your friends I am setting this document FREE This document was made by the US Government and is NOT protected by Copyright Feel free to share republish sell and so on I am not asking you for donations fees or handouts If you can please provide a link to liberatedmanuals com so that free...

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HP 6260B, Operator’S, Organizational, Direct Support And General Support Maintenance Manua L

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