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1. 6 J9T61TM HE
2. No NOW Set x x x 5 44 ao AA 2 eo 200 a 100000 10101010100 113 TOC 3 e a dun gt En irum 5 Ei WP JS 5 TEN 8 CH Us i ED TaD a 098 85 amp n a29 99H 0T Moz pou f 20 n u Uuuuu Ll NA cin 5 O o MH i O B rn m d 00 HUHUUUUUUUTU s 019 D I q g B gt SB HEB 2 amp 8 UL TTX JT TSX 058 193 OOOO QJ d D a 5 gt g fecum D H o gers D um 299 98 Bvt Bal gt 68 L Tha 629 bea 65 d N a 6 Su I o n za 985 Hoe F ros I BEGG
3. R2746 10 SUREF C792 1C793 C794 1000PF T UDD UREFR 500 BRD gt 0220 2 SHT 5 6 7 8 p gt AD7837 5 4 24 __ DUAL 12 BIT 2 0772 gt NVV DAC ene YDD 12DAC4 DB1 12UDSP 0775 oer ee en 24 IS err 571085 OUT 1 5 080 DAC 094 1 DB1 2 12DAC4_A 8x05 19 085 A GND RFB A BxDc6 18 21 bez our al4 BxD 17 4 20 bpa E 5 _ A GND y LPC OUT B Bxpce gt Ns SHT 6 12DAC3_WR 1 B onp lE BXD t2 17 ws e S F 4 15 x alt ra DGND USS UREFB Na u 500 12vpsP 11 27 AMPB no Nec 5 WAVB AL 16ADCZ z Wee DGND USS UREFB o 12LDAC 11 7 10 A_SEN3 SHT 4 5 12DAC4_WR SHT 5 Ve C2712 2713 SUREF 47225 16ADC4 SBT 169553 o S Q SENS T10 0 1 4 A_SEN4 SHT 5 6 Ali l 560 R2748 16ADC4 o A_SEN4 E 16ADCS A_SENS 185555 SHT 10 10 16ADC6 og A SENG 12UDSP ofi A_SENS 168DC6 oo A_SEN6 8DAC1_C 8DRC1 D Tie Vos 1 E BDAC1_F 12005 8DRC1 C R2747 AMPB 10 3 PHASE 8DRC1 D c R2749 DD AAA ANALOG SHT 7 10 CONNECTOR BDAC1_E SHT 6 AMPC lce795 c796 C798 0299 e
4. RAIL Figure 6 15 Inverter Assembly Schematic Diagram sheet 1 of 2 B 2 F601 Not Loaded 6 3A 149272 10A 2110 0624 F600 E 8 Pi 8a i Wise 806 6690 806 6690 S v 96 V 961 ag 78 5875 ZR x 994 58 K E 1298 6 VL Sis 8066 6690 E VT Ee 8068 6690 C P gt WE V 96H e O25 v 98 O 6 38 amp S sS 38 EN 5 5 55 Y 759 amp 5 55 Y 219 a SEL 8 EE CLAU Eg 72 725 e eo o e 29 5 EIQR 29 S el i 5 oO Oo bd e oud Ol amp gs 5 585 o e eo B88 Q 588 588 558 286 E 6 ian T zeg MEL gs 78 1906 0358 9 2 1906 0358 2 8 4 EZ z T ogg 2288 6 039 2288 ons TO TO 8 9590 5590 o PL P bi 9560 9061 0266 6690 9560 9061 0266 6690 99a V OL vega V 0L e e e 2294 e z994 gh ghi S gb 8099 Esa STR Scere ST L acre L e t t 0
5. 10 V CONN n T E 1180 U100 10 SERIAL LINK RST COMMENTS ir Sle 1 RS232 HPIB MODE NOTE 0100 CAN BE RESET IN THE RS222 HPIB MODE BY HOLDING PRX LOW FOR LONGER THEN THE TIME CONSTANT OF R138 C130 SERIAL LINK U104 3 4 LL RCT1z2 100 T T 2 4 151131 2l 13 2 KH U104 13 lt lt 11 U105 1K C120 1 528 12 13 R138 RCT132 0 1 ANN 504 100K Ve 50 50 R142 5 0104 MSTX R132 6 AAA zl 10 SERIAL LINK ACT132 ACT132 SPARES 0105 0105 0105 2 er sels 8 lk ACT14 RCT14 RCT14 Figure 6 5 GPIB Assembly Schematic Diagram 5 mm 622 gcc mu 9974 9 4 R218 R219 Q254 C221 R231 mm mm R226 mm mim a a 265 N e ZEZA 8100 e e eU ev m e i R233 0202 C237 203 LE Hibs e Bis E C Q252 018 ca as 6074 mm mm 9679 9 mum mim C974 Q R208 mum Hm C205 EN 20 e R205 0203 R2o6mm mm 141444 N a m E C235 2005858 000001101 R212 mm mm R261 mm T 026 9 E 6972 Wes rm 9528 uw gzz9 000 nu GC e mm 0SZY un d 5 wm CGZY 9 wm 2 0 5 wm mum 6 0U Gp mm mm iic mum C 9779mm wm
6. T2299 C727 cocep Bao bg7p1R2788 C778 5705 Hedo Sf fefp gba 0549 R2763 5 ceca J715 049 el 90 deo Tr d 0 Ziz EN Sy N N lo 4545 cay Cay 2 A C 1 Oc o CD Figure 6 16 DSP Assembly Component Locations sheet 2 of 2 1SUSEC SUDSP 12005 1505 C701 SHT 6 AGND_IN 15USEC 5 DETECT amp DELAY 50 A SUDSP R2790 BIAS DETECT CIRCUITS HIT 50 C710 50 A ale A 70 1 pus R709 R206 4 S io NU RAM STORE DELAY 2 5K 1 AX 15 DETECT 14 NOMINAL 0707 5U ce701 RESET S SEN_ RST 4 SHT 2 4 8 RSIN REF 2 52U 15USEC R707 751 ire doe R710 3 32K a 1
7. USENS USENS AV 55 5x ORLY DRU a ISENS ISENS lib GND REF lib OU STICK _ NNN ULMON INU IL SENS IL SENS Figure 6 21 Output Assembly Schematic Diagram sheet 1 of 4 OUTPUT RELAY SENSE RELRY ISENS ISENS IL SENS IL_SENS 20501 144150 150 SEC ZND502 1N4150 5 p ORLY DRU SRL Y DRU R530 150 SEC R596 100 C576 047 500 INV_PCLR C540 150 1 1x 1 10 SEC R537 5541 042 R544 R579 lt R580 100 1 1 3435 15U 300 SEC 1 15PF 17104 1000 15U SEC R545 100 Gane R551 C553 AAA 549 15 047 100U 500 R549 R539 R540 5531 AAA NNV USENS z45K 1x 345K 1 545 1 17104 17104 12108 USENS C554 7 dou R541 R542 R536 ANN AAA en B45K 1 345K 1 S45K 1x 17104 17104 12108 SRLY_DRVU U_MON_RET T_MON_RET NP U MON 1 I L MON I L MON RET Figure 6 21 Output Assembly Schematic Diagram sheet 2 of 4 W GY BR URRIL R584 3 6K 5x SW 500 55 0 C508 bp 8200 320 PF 5000 16000 R586 0 3 6K 5x R587 L508 3
8. 1 8DAC1_F T 3 AMPA o LULA SHT 7 LULB 0o e LT1013 12VDSP RL OFS Figure 6 17 DSP Assembly Schematic Diagram sheet 6 of 10 5 6 SHT 5 10 SHT 5 SHT 5 6 8 9 SHT 6 9 SHT 6 SHT 6 9 SHT SHT SHT SHT 16ADC2 A_SEN2 16 1 R752 NNV 12005 C768 C766 0 A_SEN1 FILTER amp A D CONUERTER 1 TSUREF A R756 0 C772 1 350 12005 C767 6800PF 65 R D SRMP R2786 2 R2787 FILTER amp A D CONVERTER SUREF 12005 50 R764 R765 R766 0228 10 10 R758 C782 C783 C784 E 2 Cdp C780 1 1 S 135 1 350 350 UCC UDD 350 Ve 1 0755 350 R761 e U7528 a 40672 AAA TO R762 R763 z 5 T 16 BIT 0 612 1 NNV NNV TX DOUT L 2050 920 1 O IN DOUT e LT1124 1 pA AGND CLK 2 LT1124 SEN BUSY AGND 0281 092681 767 0 1 C2720 Ji 3300PF sou 63U EA f 50 C785 4 1 ho 55 R2788 2 R2789 0 E 0 12VDSP A D_CLK
9. INPUT RLY ISO ex 15UPRI Sco Ez46 1 TO INUERTER NOT USED E2 R325 O ors AA e 336 1 336 2 TO DIODE RAIL BLK E336 3 ORG ECONDARY BIAS 5565 U322 LM317T_ 1837 S t 15SEC 15SEC 15USEC C325 243 4 RES C327 ne ts GNDY 1 0UF Ser ME Ed R327 INPUT RLY Ts 74K FAN PROG FAN VOLTAGE 1 NC 1i 5 INPUT RLY 1 INPUT RLY GRD 14 HE LINE OUTPUT BD R328 R330 CONNECTOR 2 7K lt 5 C329 24 d 50 1 0UF Rz29 C331 243 4 2 2 323 z 1 I I LM337T INPUT RELAY DR Figure 6 13 Bias Assembly Schematic Diagram sheet 2 of 2 m eo m 6 6 C613 ae w SB flies B B B C615 zi ilmB8BsBsssHS 8SBS B BB IB B B MA ES ES 5 81 Sle S 2286 2 8
10. A D_CAL A D_D01 A D D02 8ADC1_RD BADC1 WR 2 BADC2_RD BADC2_WR 2 BXD 0 7 8 BIT A D REFERENCE BUFFERS c 50 n 12UDSP C787 SUREF REF_ADC1 4 a hb DSP TEMPERATURE SENSOR A11 1 UREF UCC 0756 6 om TES 8RDC1 B us4 2 12005 pone R 8 CHANNEL MUX 8 BIT A D CONVERTERS 8 RD i BADC1_C LT1013 8ADC1 D 4 CH1 ECC 5 DB6 EESTI ig A e cue DBS BxOCS DSP_TEMP 7 DB4 9 0 5 083 BXD 3 REF_aADC2 pee BXD 2 T 12pac4_B R768 DB1 BXD 1 R2780 DBO BxD 0 50 REF RDC2 10K AGND DGND REF_ADC1 a 16 Via DSP_TEMP M UREF UCC R770 0755 WAUA m MAN ADC0848 12086 81 R772 2 12DAC6_B BXD C6 BND ERA MK RZ7S exo T CHB AMPB 10K 776 AGND DGND AMPC 10K Figure 6 17 DSP Assembly Schematic Diagram sheet 7 of 10 INU PCLR 50 SHT 1 DIGIN 0 15 SHT 4 0 j R1794 R1795 R1766 R1767 R1768 142 142 ren Ne idan hoes C1747 10K 5 io 10K 147 147 A 81790 R1791 ciza 147 147 SQU NT Mem eT C1745 me 147 147 50 RPA R1786 R1787 C1244 m 147 147 500 DIGIN B DP ACE C1743 220PF 147 147 500 DIGIN 9 NA AAAS 1742 220PF 147 147 500 Rear
11. Br ara 5 Pin 3 Pin 50 1 50 50 50 R12 R11 6 81K lt 6 1 cs 1x 1x AC14 1 AW 2 AC13 R1 5 R3 5 S io R6 200 12 100 100 100 100K 100K 100K 11 10 ACS aca 2 Race ACS KOO 4 ACS ace i 2 ACT ste ACO AC15 SPACING 32 UCC U4 23 11 25 acan G M ac 1310 ag AC po Daaa 0417884 11 AD C S OS 6 ACS AD 318 5 ADC 4 19 4 ADCS 10 AD 6 21 HS0S I3 p 58 HSO4 Ie R15 428 iE UF_NC 34 908 14 aC ADCO UF_LATCH 29 9502 15 120 VF_BLANK 28 901 12 oai a HS00 Pe 25 50AC10 HST1 A10 24 51809 HSIO A9 52 8C0 15 n P2 7 P2 6 P2 5 1 P24 app 535 807 2 54 ADC6 01 P2 3 06 1 vec P2 2 eps 29 RDCO 4 cs 56 ADA 50 SUF alx poli IR SARC L 3 TxD DI 5 58 ADC2 D RD So ADC L2 LZ NMC9356 K g P0 2 ADL LES IS 4 P0 6 ADO ADCO 20 70NH KIC3 101506 ADC 23 KIC2 38 ADC
12. C484 1SUINU C482 0 1 500 R487 VW 200 34072P C485 ce 6800PF 50 ot isumu 5Y R488 AAA Q475 24 9 R489 3 69K eNeaeen MZ TSUINU INTERNRL CLOCK 4470 44 470 3 4 5 6 EXT_CLK_ISO R471 5 97 4 HCU04 VOK 7 C471 7047 C464 5 NL LRFIN R472 T047 SPF 500 1 1M NL NL R473 R1407 5 62 0 Y462 NL 1 2 350 KHz SUTNU C469 5470 C472 C465 NL 420 420 1000PF 047 1000 1000 1000 R460 NL 2 15 1 LRF 4 DELAY 16 U464 9ja C473 i 5 R1408 C466 1 CLR A m 40 2K Cext Pag PROGRAMMED GAL Rent E HC123 U463 19 047 ECN 8 LRFDEL 15UINU N RRIL OU INH RRIL INH ISO ee PWM_EN ml s PWM DRIVER IC 1SUINU R1411 21 5 R1401 4 64K OPF C495 15UINU R496 ix V R497 100 DTC oute 2 497 GND PGND 7 680PF 10 100U SPARE GATES PCB Figure 6 11 DC Rail Diode Assembly Schematic Diagram sheet 3 of 3 12 Vde P _ 25 30 341 2 O 2 610301 5 5 ejpsos e C30F4 olczo us 4 P lioe 9 346 Ky 2 aEzE
13. 99 w S OZETA DEUS CO D 00672 819 T OQ AVR mm 816129 1081 6I613 0087 L J Figure 6 18 Control Board Component Locations sheet 1 of 2 U801 23 U801 25 OO OO OO OO OO OO J821 C D Figure 6 18 Control Board Component Locations sheet 2 of 2 J822 OO OO OO OO OO OO OO OO OO OO R824 R825 1 C800 R813 V_EXT_PROG R1858 R1857 AWN SHT KAA ae v 180PF 0 VOLTAGE LOADED LOADED 500 ERROR C1853 C1875 AMP L OnDED 1200 HFDC PROB R1891 R902 is C801 R815 2 5
14. 9ccy mm mm 0 79 mm mumgc y c o mm 6974 mm 0424 mim 0213 0216 D214 0209 m 0207 RE Figure 6 6 FET Assembly Component Locations LAYER 1 COMPONENT SIDE 8262 6690 2791 2061 RAIL J201 8 8 969 Gy Sa A A I a N O on 19 0268 LOcHA F a lt S re 8 PRES axe 88 146 6690 7 6129 6690 CE Sgzr 6690 ANV VV ose 692 5268 z 1 S 1 1061 1822 0910 B NY 2068 veed 8 100 0 6 6690 e d cW M3uos V Bs o s J 9 6 20 I van 8468 2D 8 58 8 2 gt 5 2 g we 8 Boxe 0259 1001 1910 28 39 02
15. B E 3 r en ES e 966 g z g z 0631 e M D635 2B H 8138 81g 585 dong mE sa Ur R613 R614 R612 R615 B 1850 R650 R651 8 ABS UTI aun ga Be 23 ES ex a 8 HER ae T E a EPA e i 8 ns r3 B Bl g ali ila o ss 5 9 gl a 885 s B 55 ws 2 s e e un 28 2 Z Im a 3 gu un 0628 282 2 B gg 22 58 696 B E601 B B oe me EZE E B 82 8 HT MIC 80 papaa EL We EE C692 VR60 8630 C693 Figure 6 14 Inverter Assembly Component Locations SOURCE 3A SOURCE 2A
16. peda rn HBg dca 849 d m gita aca 683 Gruen see 9 R2796 C1783 8149 el ee C725 Ze d dea BZ YO ABZ 13 0 6 C716 2 1 PAPAS UD qed 9 eno 3 6 n gt 0649 C R2761 m N d R2795 C1773 TEdES cedex decho 2 Xe ON C em ro ro ON E bero 2129 LT 8849 DDOQAADAA Bola ZZ ie d C728 6229 0 9 rote ho Ul SS d R3 E Az N eso Tey c 2 NI 9 NI NJ ON C706 1c714 9 4 9115 oae WR 4B
17. Figure 6 4 GPIB Assembly Component Locations FROM J112 FROM J112 50 GPIB CONTROLI T R PRX MSTX SERIAL LINK J108 TELE JACK 6 POS J109 TELE JACK 6 POS SERI LINK 1000PF 500 50 0102 50 20 1 Tp GND PE J110 E 1 5108 pps 2 8 13 D 3 2 14 D6 PD6 4 6 15 DS PDS 13 5 16 D4 PD4 14 4 17 D3 15 5 18 16 5102 PD2 HS 01 1 75515160 15 0103 ucc scH 13 GND TE Ve SRQ PSRQ ATN PATN HS EOI PEOI Hig DAV PDRU HS NRFC PNRED IS NDAC PNDRC 51 IFC gt REN PREN 7551 5165 CONN MTG d E U106 ON OFF UCC 90 SERIRL LINK W100 0106 0104 0105 0100 U101 C122 C123 124 125 126 0105 0109 50 0102 127 1000PF 1000PF 500 500 BYPASS CAPACITORS 1000PF 5 1000PF 1000 5 500 1 1000 5 RSese 111 R141 R140 4 64K 4 64K 5U 50 10101 MICROPROCESSOR La 45 apc1 45 16 ADCS 15 ___ 0 4 14 ADS 13 AD 2 12 ADC1 p axo aD 41 ETE ES 50 R139 4 64K 13 oc 14 2 10 lt 9 6 5 0 6 ADC PSEN ALE PROG 87CS1FA
18. O tees C R477 0485 a 200 D OTP403 C491 m 402 q PETER s x OTP401 U491 Acts od dd Hooooooo ododo D420 Q QO QO O QO Q QO O misol ooN 000 o No vo ro E Sess d Sarao gt Ede Heto 266 4 E454 10 454 2 O O DS400 E422 3 432 2 Ree Oooo oppo Oooo 9 0461 e R474 0 51 405 9 J444 DE een E432 4 E432 1 O o o Ao ala gel 0000 490 6 RAIL LO RAIL VMON 10V 1 2 EXT CLK ISO RAIL PCLR ISO 5V RAIL HI FAULT LO EXT CLK ISO RAIL LO FAULT LO TP1 W RAIL LO WARN LO Figure 6 10 DC Rail Diode Assembly Component Locations sheet 2 of 2 425 1 RECTIFIER SNUBBER 402 0400 r 1 IHS400 IHS402 vl CHOKE E430 1 GRA mum E430 2 WHT 7GRA WHT RED GRA WHT BRN GRA E430 3 8 PF 330 PF 7330 PF 16000 16000 16000 0402 FROM E432 2 POWER O XFMR E432 3 Q R407 2m 5x 10H R406 219 5 10W C404 C405 ET PF 3550 PF 3550 PF 5406 1600U 1600U 1600U 4 D406 E432 4 Q 5 IMON E430 4 R412 4 99K 05 5 2
19. IMON 454 2 NL XFMR SHIELD LOAD 1SUTNU E454 1 URRIL R405 R1417 10W TO OUTPUT PCB Figure 6 11 DC Rail Diode Assembly Schematic Diagram sheet 1 of 3 INUERTER BIRS HI LOW RAIL DETECT P URAIL LN UN 5415 RAIL_OU_INH U416 15UINU SUINU s LM317T a 4 1 0URATL_REF 4 99INU TRE TO 0 A 1 1 EU R444 R1405 243 4 R433 _ 454 681 4 64K 1 39K TP403 x I C441 v 047 U 4 19 X c 15UINU 5 C409 C411 35 L S ay SYSEC 350 350 R434 NL R438 MC29 2 1x A 174 NNV R1404 i A TP404 1M 4 64K Qa Jc s Do C436 0 1x 1 MC13 RAIL_VMON EU 5 a 4 T Sov R419 R439 C418 2 74K C413 S Sok bere eran WV x GROUND NOMENCLATURE 320 ZND420 LAA NANI ax 210254 15UTNU SUSEC A1 PWM CLEAN ANALOG 5432 8 1 14 Ae POWER CLEAR 2047 2 R446 R1403 R420 5 8 5USEC AZ CURRENT MONITOR A un 1 2 61K 4 64K ax 6 1445 D1 DIGITAL GENERAL a I aa R442 4 4 i B 2 0418 R421 z u Da DIGITAL PWM POWER o bu 2 RATE HT FAULT LM337T 0 11 NE 3 RAIL LOW WARN ARN 5 RAIL_LOW_FAULT TD RRIL INH T8402 HCPL 2730 EXTUSUND BOTPUT 9 5USEC 8 SUSEC
20. RET C1741 mim 142 142 500 breme AAAS R1772 C1740 es 147 147 500 reer R1776 R1777 ae Ee 147 147 500 DIGIN 12 ACT RNA 01278 ober 147 147 500 A DIGIN 14 R1772 R1773 C1737 ze 142 147 500 R1770 R1771 Miss zt 147 147 500 1735 220PF 5 220PF 500 R1769 Re 78lprers 10 10 DIGIN S d Head C1733 R1796 5 4 100PF 10 ida PCLR 0 1 500 Sou vce U760 a B 887275 70 1 273_CLK1 ies mE BxD 0 3 b 0012 221 R2782 R2783 12 5401 6 Z lp BXDCZ 8 E 10 10 55 2 DIGIN C6 BxD 4 13 D4 Q4 12 5 1791 5 14155 05115 11 n BxD 6 17 D6 Q6 16 iz 200PF Bxoc7 18155 o2 15 2 GND 12 5 10 19 21 o V 25 R2784 2785 573 25 bt MYY RESET DIGIN 2 01249 51795 REZ ssp 10 100PF 0 1 5 500 PCLR DIGITAL E 1 CONNECTOR 273_CLK2 1 2 o BXDC1 4 5 d 5 m E BXDCe 7 155 n BxD 3 8 D3 9 4 15104 04122 BXD 5 14 5 0515 DISTS BXDC0 2 pe eS 01516 SHT 5 6 7 9 BXDC7 18 D 19 DTST2 R1798 R1799 AV Av 10 10 SHT 4 DDS DN C1234 PCLR SHT 1 2 3 100PF 500 RESET SHT 1 2 4 Figure 6 17 DSP Assembly Schematic Diagram sheet 8 of 10 12UDSP
21. W GY R BLRCK URRIL Figure 6 21 Output Assembly Schematic Diagram sheet 3 of 4 TO CONTROL BORRD J524 64 32 65 51 62 30 61 29 60 28 59 27 58 26157 56 24 55 25 54 22 21 52 20 51 19 50 18 49 17 48 16 47 15 I MON I MON RET U MON E U_MON_RET e GNOC ee v DU STICK U MON INU 150 C Sa SEC v 15V SEC GNDY I L MON I L MON RET GND_REF WM GNDO a OUTPUT_RELAY SENSE_RELAY 1252 1052 28 6 37 5 45 15144 12 45111 42 10 7 4 35 3 3412 1551 TO BIRS BOARD T 2 8 10 11 12 13 14 INU PCLR e 50 SEC 1505 15USEC 1S5USEC GRDY GRDY GRDF INPUT RELRY ON FAN_PROG FRN UOLTRGE NC 5_INPUT_RLY INPUT RLY GRD NC NC TO DIODEZ DC RRIL BOARD L GNDX INU PCLR RRIL HI FRULT RAIL_LO_WARN RATL_LOW_FAULT RATL_INH EXT_CLK_SYNC SUSEC GRDD SUSEC GRDD Figure 6 21 Output Assembly Schematic Diagram sheet 4 of 4 d49UMH 7 Co Jd sS Betws oo 286 88 ESTA amp m rar k 288 B n n pam stn BSS ree 85 SSTA u
22. 5UREF 8DRC1 F 10 0 1 240 1 n 8 210 005 SUREF UDD UREFA 6 U224 12DAC5 UDD UREFA pace gADC1_B AD7837 0226 SHT 6 7 BXD 0 24 DUAL 12 BIT AD7837 BADC1_C M EDOD 551080 gt DAC BXD 0 DUAL 12 te Bxpce 22 081 RFB A 1 25 pg 2 ase DB2 22 RFB A BXDC3 21 4 DB2 DBS OUT A 31 4 20 DB QUT A DB4 5 BXD 4 20 BXD S 19 A GND DB4 5 DBS 5 19 A END 6 18 DBS BXD 7D 17 086 12 BxD 6 18 DB6 V RFB B BXD 7 17 ers bas 12DAC6_B Mic Eos 12DACS_WR cs 8 SHT 5 WR ED 15 15 00 16 AL 15 Veo DGND 055 UREFB 11 7 RMPC 11 wavc V C2714 C2715 5UREF DS 12DAC6_WR 10 5 1 SHT 5 20V 500 R2750 AWN as A 5Ps 12UDSP R2745 C790 C791 10 120 06 0 x SHT 6 120 6_ _ 20u 500 Figure 6 17 DSP Assembly Schematic Diagram sheet 9 of 10 SHT 9 SHT 5 7 SHT 5 SHT 9 16ADC4 A_SEN4 4SUREF 12005 gt FILTER amp A D CONUERTER 4 3 12UDSP gt 12UDSP FILTER amp CONVERTER 3 R2705 R2706 lt R2707 R2713 R2714 R2715 0 1
23. GNDX SUSEC BIAS DETECT a 81402 pan 4 64K U423 2 x 2 LRFIN A 5 LRFDEL HCPL 2730 E 415UINU 4 99INU PWM_EN 5USEC R424 21 5K RAIL_INH ISO e C426 GND R425 4 99K 200 5 SUSEC EXT CLOCK SYNC SUINU A R450 R459 Tes 2 681 4 64 949 NL NL 50 2 EXT_CLK_ISO NL lH i 5 1SUTNU 5 SECONDARY R432 ISOLATION 21 5K R431 C429 26 1K 5 15UINU w Figure 6 11 DC Rail Diode Assembly Schematic Diagram sheet 2 of 3 SLOM STRRT CKT R1409 R1410 1L0URAIL_REF lt 51 1K 200 C444 Q450 D T10 C448 200 SZD442 ZSD448 RRIL INH ISO R457 f g NL NL 2650 232 S Hl CU BUFFER gt CU ERROR AMP 15UINU COMPARATOR 2 2 407 C453 R456 21 5 042 500 15UINU C451 R452 CURRENT MONITOR AMP C460 NL 5 8 U459 NL t 4 2 100U 5 49 NL C461 R466 NL 047 500 NL C499 L R461 NL R411 NL gt H15UINU NL C488 21 5 m NL 047 5 15UINU T10URRIL REF T15UINU 10URAIL REF R402 WN 21 5 NL RAMP GENERATOR ANN 15K Jess 15K 4200PF 100U C481 6800PF 509 1 0426 R483 3 65K
24. To remove the PC board from the front frame use a T10 Torx to remove the screw Find the PC board finger that keeps the PC board from sliding in the direction of switch S1 Lift the PC board finger slide the PC board off the plastic fingers and remove the PC board from the frame To reinstall the front panel PC board and front frame perform the above steps in reverse order 47 4 Troubleshooting A2 GPIB RS 232 Board Removal and Replacement a b c d e Remove the outer and inner top covers as described earlier Remove the two 2 7 mm Hex screws that hold the GPIB connector place Using a T15 Torx screwdriver remove the screw holding the PC board to the rear chassis Disconnect the phone type cable from J112 To reinstall the A2 GPIB PC board perform the above steps in reverse order A3 AC FET Assembly Removal and Replacement a b Th g h Remove the outer and inner top covers as described earlier Remove DC rail cable from A4J1042 on AC input board Remove bias cables between A3J200 and A5J400 on A5 DC rail board and from A6J339 on the A6 bias board Lift fan straight up from unit and rest on A5 DC rail board Remove Litz wire cables from power transformer that connect to TB201 on A3 assembly Use T15 Torx screwdriver to remove screw holding A3 ACFET assembly to rear panel Slide AS3ACFET assembly toward front of AC source and lift assembly up and out of unit To reinstall the A3 ACFET assem
25. COM J114 2 ON A11 TRIG ASSY CHECK BIAS VOLTAGES 5V SEC 15V A6 BIAS A9 OUTPUT A8 DSP A10 CONTROL ASSY GO TO A1 FRONT PANEL TROUBLESHOOTING IS ERROR PRESS SHIFT ERROR ue nas SEE TABLE 4 2 FOR SELF TEST ERROR MESSAGE NO Y PROGRAM VOLT 120 Notes 1 View LED from lower left side of power supply OUTPUT ON Figure 4 1 Overall Troubleshooting Procedures sheet 1 of 2 24 Troubleshooting 4 PROGRAM OUTPUT OFF CONNECT LOAD RESISTOR 20 OHMS AND CURRENT SHUNT ACROSS OUTPUT TERMINALS PROGRAM OUTPUT ON CURRENT 5 00 OUTPUT CURRENT 5A WITHIN SPEC MODE PERFORM VERIFICATION amp CALIBRATION AS REQUIRED IS DC RAIL LED ON DISCONNECT CABLE FROM A9E527 OUTPUT BOARD TO J625 INVERTER BOARD IS DC RAIL LED GO TO A7 INVERTER TROUBLESHOOTING MEASURE DC RAIL J444 1 TO J444 3 503 4 VDC GO TO 5 DC RAIL TROUBLESHOOTING MEASURE CHECK OUTPUT RELAY A9K500 A9Q501 D501 120 VAC A9TP501 TO A9TP502 OUTPUT RELAY HI A10J524 45 OUT RELAY HI A10J821 22 IF THESE SIGNALS DO NOT TOGGLE WITH OUTP ON PROBLEM WITH A1 FRONT PANEL OR A8 DSP BOARD MEASURE 73 5 Vpp SINEWAVE A10J822 5 CONTROL GO TO A8 DSP TROUBLESHOOTING BOARD CHECK PULSES AT A10U1801 25 CONTROL BOARD SEE FIG 6 18 GO TO A10 CO
26. I EXT PROG R1856 R1855 1505F 1M Not 41 2 SHT7 5946 R953 LOADED C1867 LOADED I MON 4 4 10K 1 10K 1 150 82PF 50U R943 PEAK REF R951 10K I_PEAK_PROG URO41 R941 R942 52940 BAS28 6 20 R950 1K 12 SHT6 For Nor 5949 5947 C948 13 5 0 047 LOADED LOADED ahh gt Lr i NOT 3300PF L LOADED 500 0905 05 11 IPCL TEST eo I_MON 151 5 Roco C951 5955 s 4 0904 I L MON Nli SHT1 s 150 0 1 3 5 6 500 0945 6 fie N 5959 2 pasen I PEAK ERROR AMP 10K 100K IPEAK_CNTL SHT1 R956 JUNCTION TEMP Tik ERROR C950 R1901 4 7PF 500 A JCT_LIM TJ_a R957 E 100 100K 0258 C1569 C963 0 047 500 3300PF 50 JUNCTION TEMP Isi LIMIT AMP 5967 C954 C955 ul C962 IPK_FDBK 14 SHT1 15V NOT NOT 0 1 4 LORDED D943 12 NOT NOT 3300PF LOADED 5 V Ur 16 LOADED gum 5966 R209 pases R1821 10K t AAA 100K ok Suis C1818 NOT JUNCTION TEMP ERROR AMP R1886 R1912 R1836 0 Ciis Shor NOT TJ_QP PDC 1000PF 1K 500 JCT_LIM coso E SHTS 3 2 151 5 __ 1000PF R1887 4 5 5 50418 4_ 15u 13 5 CAP1_BUF V maya i LA SHT7 CAP2_BUF 905 aps211e e 1 CL_PEAK SHT5 6 Figure 6 19 Control Assembly Schematic Diagram sheet 4 of 7 SHT6 SHT1 SHT6 SHT6 CLOCK OSCILLRTOR REG UR LEUEL 1820 SOR FRUL
27. KEYSIGHT TECHNOLOGIES Keysight Models 6811A 68124 6813A 6811B 6812B and 6813B AC Power Source Analyzers Keysight Models 6841A and 6842A Harmonic Flicker Test 5ystems Service Manual NOTICE This document contains references to Agilent Technologies Agilent s former Test and Measurement business has become Keysight Technologies For more information go www keysight com KEYSIGHT TECHNOLOGIES Warranty Information CERTIFICATION Keysight Technologies certifies that this product met its published specifications at time of shipment from the factory Keysight Technologies further certifies that its calibration measurements are traceable to the United States National Bureau of Standards to the extent allowed by the Bureau s calibration facility and to the calibration facilities of other International Standards Organization members WARRANTY This Keysight Technologies hardware product is warranted against defects in material and workmanship for a period of three years from date of delivery Keysight Technologies software and firmware products which are designated by Keysight Technologies for use with a hardware product and when properly installed on that hardware product are warranted not to fail to execute their programming instructions due to defects in material and workmanship for a period of 90 days from date of delivery During the warranty period Keysight Technologies will at its option either repa
28. OV 0A out 4 9V 85A out L MON RMs 29 O to 4 98V 2 5 t0 24V 7 8 bit DAC common TERM xc AC reference 01023V 0to 10 See bias troubleshooting FAN PROG x PFs current common 0A out 4 99V 13A I RMS PROG out 2 5 10 24V OV program 5 to 0 02V 448 to 2V pk out 15V bias 15 bias I PEAK PROG 4 99Vdc 0 to 40 or 80Apeak out rms voltage prog common 12 V RMS PROG OV OV out 3V 300V out ALC RTIME always 4 9V s waveform DC offset 4 current monitor common voltage monitor common H 2 2 2 2 1 1 1 5 3 1 5 3 0 to Sv L 4 99 to 0 WFDC_PROG 425V to 425V out _ waveform ampl common OV 0 out 300V out WFAC PROG 5 to 4 99V ac dc current monitor full current output 5 to 4 99V ac dc voltage monitor 425Vdc or 300Vac 39 4 Troubleshooting Table 4 9 Voltage Measurements at J821 viewed from circuit side of A10 control board range signal pin pin signal range s l R sSvoitbis normally hi low true RESE INPUT RELAY 1 5V 10 seconds after power on ALC EXT hi output disabled 2 mV is era SS 10 s mannrravcr of s s cene RMS tow RTIME ni_ pulsing low true 2 2 CV_LEVELING RMS hi RTIME low
29. Program 400 Hz 399 960 Hz Hz 400 040 Hz Front Panel Display Fo 0 040 Hz Hz Fo 0 040 Hz DC Voltage Programming amp Readback Accuracy 425 VDC Output 424 075 Vdc 425 925 Vdc Front Panel Display Vo 0 363 Vdc Vde Vo 0 363 Vdc 425 VDC Output 424 075 Vdc 425 925 Vdc Front panel Display Vo 0 363 Vdc Vde 0 363 Vdc Note 1 Measurement uncertainties are only valid when using test equipment listed in Table 2 1 2 Voltage Programming and Readback measurement uncertainties are for a 3458A DMM in the 1000 volt range 3 Measurement uncertainties in parenthesis are only if a 30 1 ratio transformer is used with the 3458A DMM 14 Performance Tests 2 Table 2 10 Performance Test Record Keysight 6812A B 6841A Model Report No Date Test Description Minimum Results Maximum Meas Specification Specification Uncert Voltage Programming amp Readback Accuracy 300Vrms 45Hz 299 250 300 750 Front Panel Display Vrms 190mV Vrms 190mV 300Vrms 400Hz 298 200 301 800 Front Panel Display Vrms 400mV Vrms 400mV 300Vrms 1KHz 296 700 303 300 Front Panel Display Vrms 700mV Vrms 700mV CV Load Effect Vout 1 5V Vout 1 5V CV Line Effect Vout 0 3V Vout 0 3V rms Current Readback Front Panel Display High Range A models Io 0 0175A Front Panel Display Low Range A models Io 0 0045A Front Panel Display High Range B models Io 0 0125A Front Panel Display Low Range B models Io 0 0040A Total Harmonic Distortio
30. SRR 9 6 SOURCE 4 TONo g VO5 g ow E 5 58 S 2 ZZ 5080 2371 TON 01 5 16 TONM 1 12 O O u gt a 28 C651 6 4 15 c FET RES 295 pe TDLY 2 15 103 TONR 2 16 w yoae l m 14 e e E ge 8 m VIN o5 B U610 m Stig 12 U609 RSS 1820 5656 149277 dian Dod Tt CLR Q 5 Tum off Pulse Width 1 TOFF 1 11 TONG 2 g 2A OA 15 063113 7 88 x83 Ss vv Peay TOFFM 1 10 1820 8602 6 3 BS 2 0685 GND SIDE HASS 22988 E2388 9 a2 Z R644 1 9 Te ne 45V a 45V 10 g B oB 19 s 8 0160 5944 m GND a 261 on oS R677 5 CXT R CXT LA B Turn on Drive 0699 3830 On FET elk elut Fon x as 8 10K 4115 9 eras 5759 E 464 A 1 lt GND 0699 3970 N Ses e S 9 0699 4009 reng 8 25 25 roses VCC xg U621 s 28 251158 id 2 1826 2801 a RES SEN IOUT e Z 22388 4 8 598 m I DOUT od 676 ES ox Fa 3 seN2 REM LS ue moo 4 260 9 a x 28 9 A 1 A VEE lt 6738 259 5 2 0699 3947 25 8 P O 39 NSE 7 9 Zun 5 gee gt Ny 16 Bovey STS ST eS 0610 Tr SS RES 3 1820 5656 TONO Tum on Pulse Width 1 CLR R675 TOR g TONM 1 1 4 45V 464 A 0699 4009 14 5 Reo CXT R CXT
31. 149 XILINX ac 148 nca 146 59093 eic _ ace 146 RESET 05 147 160 PIND M iln ot aco 152 STRB R2755 L aco Hs 55 0 ese 154 3 SHT 2 155 1056 R2756 XL CS Pf 2901 INTO N XHSTRBe ROM CS So R2757 160 DDS DN 47 cur XWSTRB AM2702048 DC31 156 XDC0 7 A orn 55 ROM_cS RESET OE DC29 5 o L facies aa own y R W A16 124 120 8 or acis 41 SHT eS Lala D15 0317 DC 26 8 18DRCC7 TEES 351814 01458 TECH DC25 9 12DAC 6 adio ape3 0135 0024 10 12DAC S tact ate 1 5 EEE DC23 11 67 18DARC 4 ACEO 36011 011 5 0267 63 12DAC 3 ACD D10 35 5285 0021 13 12DAC 2 09 12DAC 1 ACB 32 DB 11 D 24 18DACCO 12DAC 0 8 EPROM 14 D023 D7 132Kx16 1615 0022 16 D 21 BYPRSS FOR 05 5 226 0016 18 A4 PRIETEN U 131 56 Do Don 132 BDAC 1 ACT 35 02 02159 pc 505 505 114 8DAC 0 8DRC C0 2 AL D1 DC15 eco 24 pole DC16 TETE C739 C740 NC NCIES 33 DC12 25 155 1000Pf 1000P f NG sou sou DC11 26 BADE 2 GND1 GNDe DC10 27 BADC 1 8 135 BADC 0 3 DC8 29 Dc7 30 5USEC 5USEC Dc6 3 DCS 32 126 16ADC 8 SHT 5 16ADC 7 C741 C742 pcz 34 168DC 6 DC2 35 168DC S5 000 000 o 55 500 500 16ADC 4 C737 DCOD
32. 9010 25 o CEN 0 6 rig 15 ARXD ag R10 26 HR OPS 57 RXBIRG pi 26 28 9 27 e 7504 05415 IR tgo BNC BOARD a OPZ gt NC CONNECTDR ac 5 21 DC 21 023 A2 6 31 D n 2 SMODE DeZo E30 6 06120 D6 Sla 20 D22 ACL Ala iei 14 prr acs 7 19 D5 19 D21 R2 R727 ACO 2 32 AS DS 26 2 AD T R 8 18 DA ACAD 8 18 20 UIRQ 94 77 DCS 17 D19 3 69 4 98 21 DC Aas A2 10 BS 15 D2 15 DC18 IP6 25 D6 RXBIRO 3 sure ACL 1i 01114 001 eau 11 14 Da ps 60 xs RXAIRQ ACO 12 13 000 ACO 12 13 DC16 26 xa 80 00 4 D4 19 DZ 055 IP3 D3 27 DC2 16 IPe D2 18 DC1 01 158 DCO Y SUSEC 1 0 00 GND 22 DCO 21 SHT 4 3 4 SHT 1 2 8 t _ RD 3 WR SHT 3 sU EO Figure 6 17 DSP Assembly Schematic Diagram sheet 3 of 10 SUSEC SUSEC SUSEC C738 0 53 SHT 5 5 3 20 43 leo 79 100 122 140 157 1000 500 ac 152 we 78 REGET TIN2 ace 150 119 SUSEC SHT 2 3 3 acs 151 U736 m ES 49 INTO
33. AC FET RAIL DISCONNECTED E 1 00 RAMP GENERATOR PULSE R483 R489 TO TP404 22 00 RAMP PULSE B 5 00 us div RAMP GENERATOR U475 7 R480 TO TP404 5 00 RAMP GENERATOR NO 1 D idiv 5 00 us div PWM DRIVER U491 8 TO U491 9 500 V DC RAIL DISCONNECTED FROM INVERTER PWM DRIVER NORMAL OPERATION F 30 Troubleshooting 4 A6 Bias Assembly Troubleshooting Checking the A6 Bias Assembly consists of checking the bias voltages and the fan speed control circuit WARN NOTE ING Disable the 500 Vdc rail by disconnecting cable 5080 2365 from A5 J400 Then connect a jumper from A5 J445 4 to A5 J445 10 This disables the RAIL LOW FAUL T signal Also place an insulator over the DC Rail board You can determine if any of the bias voltage regulators are operating in current limit mode by disconnecting the cable going to the circuit where the bias is used If the bias voltage returns to normal with the cable disconnected most likely the bias circuit is OK Table 4 6 Bias Assembly Troubleshooting Procedure Result Check F301 Check the bias voltages at the following locations Measure at the indicated points Test point Common point C314 C302 P C304 C302 P C313
34. C317 U312 tab C317 U311 tab C317 A U322 tab C329 Y C331 tab C329 Y E346 2 D322 F E346 1 D322 F E336 2 E336 3 E336 1 E336 3 Check the fan speed supply by measuring the voltage at Test point Common point 361 and 0322 F Change the fan speed and check for the correct voltage as follows Press 0 and 9 simultaneously Press A twice f once and ENTER Press 0 and 9 simultaneously Press A once Enter a fan speed then ENTER and and and and and and and and and and and After the fan speed test enter the following command SHIFT OUTPUT Y ENTER This restores the fan speed to automatic mode If open replace fuse If fuse blows again troubleshoot the bias circuits 12 Vdc 12V PRI to A4 Input board 15 Vdc 15 PRI to FET board 12 to 15 Vdc 45V UNREG to 0311 0312 5 Vdc 5VDC to Front Panel 5 Vdc 45V DC to A2 GPIB board 15 15 8 to DSP A9 Output 10 Control boards 15 Vdc 15VSEC to A8 DSP A9 Output A10 Control boards 25 to 30 Vdc 25 V UNREG to A7 Inverter DSP boards 5 V 5 V SEC to A7 Inverter DSP boards 22 Vac 22Vac to dc rail bias regulator 44 Vac 44Vac to dc rail bias regulator 4 7 Vdc in AUTO mode EE INIT model FAN MODE MAN EE INIT model FAN SPEED n 10 5 7 Vdc 50 9 6 Vdc 100 14 6 Vdc 31 4 Troubleshooting ATHMGSSV ATSMGSSY JOHLNOO Afdino
35. NW ORE GO to Q i ii 0321 92324 oses E Poses fe 145 9 OOOOOO o 5 Vde 15 V 38 Figure 6 12 Bias Assembly Component Locations HPIB ZALF BIAS DO NOT Pot IHS311 PRI1 T301 F311 D362 AC SWITCHED 2 AC SWITCHED 1 M4 UNPL FRONT PANEL BIAS F301 PRIMARY BIAS INPUT RLY ISO F300 D300 3A 1250 UNSWITCHED J355 Ezz4 1 RC SHITCHED 1 RC ACC N C GNDP 12UPRI j p p INPUT RLY ISO INPUT BD 150 15UPRI 4559 RC FET BD CONNECTOR Figure 6 13 Bias Assembly Schematic Diagram sheet 1 of 2 PRI1 AC SWITCHED 1 AC SWITCHED 2 1 T300 50 5 0321 ECONDARY BIAS 1250 DO NOT 2 R322 LORD T1 FAN REG R351 gt 4 64K 29291 FE IHS351 R354 Sem 1 TIP122 1 24 FAN J343 C361 D351 ses FAX 2 10 C350 UR351 re 7 50 047 i000 Z0352 1N4150 URZS2 VN V D334 3 j1 2a MCzea 524 500 IN 500 2 MC327
36. T IH 906 E 546 6688 006000 011060 m THON meso N L mem SRE TIR eei mores SzgapSRRTO 09875 28E E HB 595 5 gay 00006145 KO 4 r 66000 dida UU UH Um 163 SO II 44 10810 SE e EBD ao ozel 1 y oh 6 82812 tf i EAN es Addi E ceoumm als IH SSE ogg SCCM oe aD b gpn sie D szam 22E sama 1481 o czea LI 94 2299 ht BAyHeH9es TSI caer as TE Qo op cta cdot Oo nes So SP Bs 18 sumo c dHleseo x seis sms ce E H3 osom goH IIIS060 8985 EIO PESTI 5 rse SF E mses E o E m 1 1 S669 896 1964 6983 19884 SSBIIE 8860 iM L o 1 2 96 S P d ES 096 E mogt ooeamnS g miese x SIEL KERTI SIBIO M6263 meo69 A a Mee posame aes mlse O reba IIm60812 o 66 ave ozp E S60 Se Mose cid cio E E 1 1 cp ge messis 5960 mosses 85872 65879 Ep E fn Via Nag 9668 ezaale lB SH Po ced E D09820 e ML Lo 9
37. normally low hi true RAIL LO FAUL AC FAULT MODE normally low normally hi low true DIODE R PCL S IP REG FAULT normally hi S R R digital common D1 CL hi when CC true CL RM normally low hi true OVP FAULT ES 40 Troubleshooting 4 A9 Output Filter Relay Assembly Troubleshooting WARNING These assemblies contain hazardous voltages during some troubleshooting procedures Use extreme caution When covers are removed always wear a face shield and ear protection when powering up this instrument Only repair units in a controlled area with no unprotected personnel present START TURN UNIT ON CONNECT OSCILLOSCOPE PROBE TO 500 mV div 5 00 us div A9TP500 OBSERVE WAVEFORM WAVEFORM OK CHECK U506 AND ASSOCIATED SEE FIGURE CIRCUIT COMPONENTS A9TP500 PROGRAM VOLT 300 OUTPUT ON CHECK U500 RELAY 501 VOLTAGE DRIVER RESISTORS U500 6 OUTPUT VOLTAGE 0 01 PROGRAM OUTPUT OFF CONNECT A 20 OHM LOAD PROGRAM CURR 10 OUTPUT ON UNIT IN CC CHECK U502 AND ASSOCIATED CURRENT COMPONENTS 10 AMPS 0502 6 OUTPUT 0 0566 CHECK IMON VMON and L MON SIGNALS AT A10 CONTROL BOARD Figure 4 9 Output Filter Relay Troubleshooting 41 4 Troubleshooting A11 Trigger BNC Board Troubleshooting WARNING This board contains hazardous voltages duri
38. subminiature xfmr transformer lg long mtg mounting thrd thread xtal crystal How to Order Parts You can order parts from your local Keysight Technologies Sales and Support Office When ordering a part please include the following information the Keysight part number the part description the model number of the unit 51 5 Replaceable Parts Table 5 1 Parts List for Main Assembly Ref Desig Applicability Keysight Part No TESTED CIRCUIT BOARD ASSEMBLIES at the end of this chapter for location information 52 6811A B 6812A B 6841A 6813A B 6842A 6811A B 6812A B 6841A 6813A B 6842A 6811A B 6812A B 6841A 6813A B 6842A 6811A 6812A 6813A 6811B 6812B 6813B 6841A 6842A 6811A B 6812A B 6813A B 6841A 6842A 6811A B 6812A B 6841A 6813A B 6842A 5063 2367 06811 61022 5063 2314 5063 3482 5040 1702 5040 1703 5080 2333 5001 6795 0370 3238 06811 80001 06811 80007 06812 80001 06812 80003 06813 80001 06813 80006 06841 80001 06842 80001 0360 2190 0360 2191 0515 1085 06813 20001 06813 80002 1252 1488 1400 0493 1400 0611 3101 3088 5001 0539 5001 6745 5001 6799 5001 9801 Front Panel Board Tested GPIB RS 232 Board Tested AC FET Board Tested AC FET Board Tested AC Input Board Tested AC Input Board Tested AC Input Board Tested DC Rail Board Tested Bias Board Tested Bias Board Tested Inverter Board Tested DSP Board Tested DSP Board Tested Output Relay Filter Board te
39. 1 R330 0699 0208 RES 15 25W R351 0698 3155 RES 4 64K 1 R354 0686 2225 RES 2 2 596 5W R372 0757 0463 RES 82 5 1 R373 0757 0419 RES 681 1 125W T300 6811A B 6812A B 6841A 9100 5143 XFMR BIAS T300 6813A B 6842A 9100 5144 XFNR BIAS T301 6811A B 6812A B 6841A 9100 5141 TRANSFORMER GPIB T301 6813A B 6842A 9100 5142 TRANSFORMER GPIB U300 311 312 322 1826 0393 IC LM317T U313 All 1826 0147 IC 7812 340 12 U321 All 1826 2505 IC LM2576T ADJT U323 All 1826 0527 IC LM337T U362 All 1990 1074 OPTO ISOLATOR VR351 All 1902 0955 DIO ZNR 7 5V 5 VR352 1902 0957 DIO ZNR 9 1 V 5 55 5 Replaceable Parts Table 5 5 Parts List for Inverter Board 0160 7505 Cable thermistor 5080 2699 Cable 3 wire 5081 4971 Cable 4 wire NOTE Earlier ac source models used a different through hole inverter board This surface mount inverter board assembly 5064 0110 is the recommended replacement part for all previous version ac source inverter boards Table 5 6 Parts List for FET Board Reference Desig _ Applicability Keysight Part No All 5080 2365 Cable J200 All 5188 4204 Cable J201 All 5188 4209 Cable J202 NOTE Earlier ac source models used a different through hole FET board This surface mount FET board assembly 06812 61001 for models 6811B 6812B or 5063 2316 for model 6813B is the recommended replacement part for all previous version FET boards Table 5 7 Parts List for
40. 1005 Wy ante R1708 R1709 10 10 50 NN SEES BXD 6 10 10 XDC3 R1706 R1707 ey R1704 R1705 19 10 50 xoen C1703 100 NOR xD R1702 R1703 10 10 5 R1700 MN 080 BXD 3 xD 0 C1701 10 10 BxD 2 01200 UU BXDC1 En BxD 0 BxD 0 7 SHT 6 7 8 9 12DAC 0 8 12DAC 8 R1732 Rae 10 10 12DAC 7 R1730 Rae C1716 10 10 1208 6 R1728 R1729 aiie mined x 10 10 5 120805 R1726 R1727 s e R1724 R1725 10 10 500 ALI gy sur 6 9 1208014 WAN NN 1715 100PF ELE R1722 R1723 10 10 I 500 VW 12DAC 3 MN AAA C1712 10 10 1000 12DAC1_WR 15006 2 R1720 R1721 INA 10 10 TOPE 12DAC2_WR SHT 6 SHT 4 12086 1 R1718 R1719 CIPI 10 10 19 12DAC3_WR 1 Nee AA 1209 E 100PF 10 10 500 1cDnES Rt C1708 100PF SHT 9 Ed 50 12DAC5 HR 100PF 5 12DAC6_WR 8DAC 0 2 8DAC 2 R1738 R1736 R1737 10 10 8DAC 1 AAA AAA C1219 8DAC 0 BADC 0 3 8ADC 3 8ADC 2 88DCC1 R1734 R1735 10 10 C1718 100 50 R1746 R1747 8ADC 0 8DAC_LD 8DAC_CLK 5 6 8DAC_SDI 8ADC1_WR o 8ADC2_WR SHT 7 8ADC1_RD BADC2_RD 168DC 0 8 16ADC 8 R1764 R1765 10 10 16ADC 7 R1762 R1763 C1732 R1760 R1761 10 10 WANA C1731 100PF errs 168DC 5 R1758 R1759 10 C1730 100PF Wy A D_CLK 16ADC1 4 R1756 R1757 10 10 Sov 5 7 10 C1729 100PF A D_CAL 16
41. 10K mi GND 0699 3970 gig 8 788 5 x Figure 6 15 Inverter Assembly Schematic Diagram sheet 2 of 2 002d J746 7551 bbe C2200 L Q Ra777R2778 0715 PH NI 2 e N IN T P 4 U234 59 U225 22 9260 0761 aod Ads yw 0705 GRB7Bc211 2008201 a 0248 B x Y kd
42. 22 R54 R57 K 4503 oe ADCS 2 i 21 KICO Pi 5 30 KOCS 51 0 7123 4 ADC 3 12 1 D6 10 10 I 5 0 1 PLA SS KICS 2A ZN C31 R58 R60 15 P0 0 P1 3 21 KOC2 6015 AAA AA UREF P1 2 10 10 12 1 20 ADCO J1 100PF 19 KOC1 8 500 C33 R16 1 1 0 U16 5 NNV s gt RESET AC11373 TELE 215 UPP GND JACK 6 100PF R15 14 5 500 43 R53 R56 50 RERDY V pos 4 6 81K US 3 80C196 UF_DATA 10 10 1 1 eS NMI 1 C30 RSS R59 64 CLKOUT NNV 45L BUSWIDTH T2M KOC0 5 10 10 V 1005F 1 8 8 USS2 USS1 36 6 81K 01 D2 D2 ax 1g0pr 2 10 5 AH 1 7 7 NY 6 MHZ KI 0 5 NOTE TN YRI 1 ALL 1206 RESISTOR VALUES ARE IN OHMS 1 1 8W i ALL 0805 RESISTOR VALUES ARE IN OHMS 1x 1 10W UNLESS OTHERWISE SPECIFIED 2 ALL CAPACITOR VALUES ARE IN MICROFARADS UNLESS OTHERWISE SPECIFIED 3 KEYPAD SHIELD SHOULD BE CONNECTED TO GROUND K NV Figure 6 3 Intelligent Front Panel Assembly Schematic Diagram sheet 1 of 2 56 5UF C1 C6 Ce C10 C14 C15 C11 5 5 5 500 500 500 5 3300PF 3300PF 3300PF 3300PF 3300 3300PF 3300 ERN U4 U16 U17 U15 U10 U13 an is 3300PF 37 Uta 36 V z5
43. 24 a5 AC10 23 10 A8 25 eco 26 acs 36 AC po 22 DO aca 27 8 ACB 22 ACE alas poe 18 xe AC Slay p gt 2i DC15 21 DC21 ACS Slas pos 127 Ds ACE ap po 20 0014 6 20 0030 6 boa 126 Da ACS ps 29 0013 19 0029 5 5 pa 4 04118 DC12 18 D28 ace 8 15 AC3 9 as ps 12 DC11 a 9 17 DC27 ACL Slay pai 15 DC1 YED 10 555 0010 TEE 10 15 DC26 ACO 10 0 poo 121 xo ACL 1i 0 24 009 Aca 11 14 0025 ACO 12 13 DB ACO 12 13 D24 GND 80 00 uss 14 DOO 12 16 Dre E13 V Y E14 15 DC E16 E17 oca NOTE LOAD R2775 OR R2776 BUT NOT BOTH ocio E18 TINi D E19 E20 R277 R277 SUSEC SUSEC SUSEC ouz Z 2776 R2763 C222 R2764 C228 C230 0 0 0 16 Fee ze 1000 1000 44 1000 pci E23 UCC UCC pos 30V S SHT 2 U722 U723 DC19 9 SUSEC Ees eae oui E HM628512 _ end kenn T DC21 a i A17 cs RAM_L_CS RAM_H CS4 UIRQ INTRN RXDR DRXD D AC16 2 24 RC16 2 24 za DTXD A16 OE 52 DTXD D 24 E27 5 ACIS 31 Ads 31 11 36 A15 ARXD RXDB X1 CLK UCLK 7 RI sige eda la V L3 TxpB xa 2 Nc TRES AC13 28 a13 505 DFI ij SMODE d 12 Alaro RM xro 38 TOUT 15 SHT 2 4 11 25 512Kx8 ACI 25 39 29 ATXD RC10
44. 29 34 1 30 26 51 18 G9 10 UF_DATA 31 PK 35 62 17 610 9 39 29 34 63 16 611 se 40 25 28 54 15 7 sz 41 me Ge UF_BLANK ee 24 27 G5 14 6515 6 54 48 35 PO 2 56 15 614 5 45 3300PF 3300PF UF CLOCK _ EX 24 Ui UZ UF_LATCH 25 58 11 616 3 PME 36 46 58 w 21 H2 8 7 TAB 5 1 4 1 2 3 NV ie e 50u K ESD GROUND 5300 INPUT RF GROUND D DIGITAL GROUND UF UF GROUND 56 NA 4 1 R45 R46 4 6 81K lt 6 1 104 1 1 UF_PWM ee 5528 1 44 2 R41 R42 25 6 81K S OK 1x 1x Em AH E 16 3300PF UCC los ca4 UR17 U10 55528 P SUM 6 Mz e oo 3 200 Po 01 g Qe Pr 43 GND 8 R43 R51 R44 2 2 5 1 84 Figure 6 3 Intelligent Front Panel Assembly Schematic Diagram sheet 2 of 2 J111 OOOOLI J110 oog S D113 BUF 5 rz mb IE C107 IL 131 na B TT ET II TI 117 PEE EE C132 C134 C133 C131 I Il R132 iO S IT 115 OD oo oo x 5156 51235135 Ri R141 I 1 C124 R143 lt gt IMAGE BARCODE
45. 37 16ADC 3 168DC 2 1000 1 47 168DC 1 44 500 2 46 168DC 0 16ADC 0 8 UPP UCC 3 SUSEC 0755 21 AM27C2048 __ 20 38 55 Rom_cs 30 98 DIGIN 15 ETE OE 60 45 pc DIGIN 14 aue ajn ni V 100 DIGINCIZ A16 50 DIGIN 12 aas pis 215 140 51 DIGINCI1 5 DC14 A14 D14 52 DIGIN 10 AC13 59 6 DC13 acie aa 0135 0127 55 DIGIN 9 aci 3x 1 5 50125 55 89 DIGIN 8 A11 D11 56 88 DIGIN 7 AC10 36 9 DC10 A10 D10 59 87 DIGIN 6 aco Bl po 0 009 es INIT DIGIN S ACB pg Deg DIGIN 4 AC 31 EPROM 14 D 7 D 70 84 DIGIN Z 30 132 16 15 6 6 D6 DDS DN 71 DIGIN 2 ACS 29 a5 ps 16 D S 75 DIGIN 1 Zl a4 04127 DC4 75 74 DIGIN 0 DIGINCO 15 ACS 27 _0 a aca 26 19 D2 R732 R733 273_CLK1 ne De 94 AC1 25 01120001 N ACO 24 ao po et 0 106 C743 NC NC 107 M SUSEC NC nc 55 ta ROY BSY 100PF GND1 GNDe 50 c 120 our 4S5USEC 10 10 125 C244 127 159 _ 128 129 11055 130 138 40 143 42 144 44 ss D 0 31 19 61 77 101 123 129 158 5 2 3 Figure 6 17 DSP Assembly Schematic Diagram sheet 4 of 10 XDC0 2 XD R1714 R1715 10 10 xD 6 LE ALS 1202 xD 5 R1710 R1711 10 10 MN
46. 4834 047 uF 10 301 328 0180 3298 C F 2200uF 50V C302 313 325 329 0180 0230 luF 50V C303 304 314 315 317 C326 327 330 0180 4129 CAP luf 35V C312 0180 4137 1200 uf 35V C322 0180 4462 CAP 1200 uF 63V C323 0180 4398 470 uf 63 C324 0180 3458 CAP 4700 uF 50V C331 0180 4131 CAP 4 7 uf 35 V C361 0180 4136 CAP luf 20V D300 303 331 334 351 All 1901 0731 DIO IN4004 10GO4 D321 324 362 365 All 1901 1087 DIO PWR 856 D325 All 1901 0992 DIODE 40V 3A D352 All 1901 1098 DIO IN4150 E334 All 5080 2355 CABLE E336 All 5080 2357 CABLE E338 All 5080 2358 CABLE F300 322 323 All 2110 0688 FUSE 3AM 125V F301 All 2110 0002 FUSE 2AM 250V F311 321 All 2110 0685 FU SUBMIN 7AM F324 325 All 2110 0699 FU SUBMIN 5AM F326 All 2110 0712 FU SUBMIN 4AM HS300 311 312 322 351 All 1205 0350 HEAT SINK HS321 323 All 1205 0282 HEAT SINK J306 314 All 1252 1999 MOD PHONE RCPT 1335 1252 2672 CONN POST TP HDR J337 1251 8139 CONN POST TP HDR 1339 1252 0063 CONN POST TP HDR J343 1252 0055 CONN POST TP HDR 1353 1251 5439 CONN POST TP HDR L321 5080 2321 CHOKE OUTPUT Q351 1854 0828 XSTR NPN SI R300 326 329 0698 8672 RES 243 4 196 R301 0698 0085 RES 2 61 1 R311 313 0699 0083 RES 681 1 IW R314 0699 1982 RES 1 055K 196 R323 0757 0279 RES 3 16 1 R324 0757 0280 RES IK 1 125W R325 8159 0005 RES ZERO OHMS R327 328 0757 0281 RES 2 74K
47. 62 front panel board 62 main assemblies 52 output board 60 thermistor board 62 revisions 8 rms current accuracy 12 ROM upgrade 44 run time 23 safety considerations 7 summary 3 schematic diagrams AC input assembly 74 bias assembly 81 control board 100 dc rail diode assembly 77 DSP assembly 88 FET assembly 72 front panel assembly 67 HP IB assembly 70 inverter assembly 84 output board 108 thermistor assembly 114 transformer assembly 114 trigger board 113 schematic notes 63 116 self test 22 serial number 8 E test equipment troubleshooting 21 verification 9 test record HP 6811A 14 HP 6812A 15 HP 6813A 16 HP 6841A 15 HP 6842A 16 troubleshooting Bias assembly 31 Control assembly 38 DSP board 38 FET board 27 front panel 26 Inverter assembly 33 Output Filter Relay assembly 41 Rail assembly 29 RS 232 26 Trigger BNC board 42 troubleshooting GPIBboard 26 voltage programming 11 Keysight Sales and Support Offices For more information about Keysight Technologies test and measurement products applications services and for a current sales office listing visit our web site http www keysight com find tmdir You can also contact one of the following centers and ask for a test and measurement sales representative United States Keysight Technologies Test and Measurement Call Center P O Box 4026 Englewood CO 80155 4026 tel 1 800 452 48
48. 6800PF 3300PF VEE 650 12005 650 v i8UpsP 930 12 RESENS C1780 1790 1 1 5 R2724 m R2732 10 10 12UDSP 12UDSP 16ADC6 A_SEN6 Figure 6 17 DSP Assembly Schematic Diagram sheet 10 of 10 49
49. 83 output board 107 thermistor assembly 114 transformer assembly 114 trigger board 112 constant voltage load effect 11 constant voltage source effect 12 constant voltage tests 10 copyrights 4 current monitor resistor 10 p dc readback accuracy 13 dc voltage programming 13 description A front panel 17 A10 Control assembly 20 11 Trigger assembly 20 A3 FET assembly 18 A4 AC Input assembly 18 A5 DC Rail assembly 18 A6 Bias assembly 19 A7 Inverter assembly 19 A8 Digital signal processing assembly 19 A9 Output Filter assembly 19 GPIB assembly 18 RS 232 assembly 18 disassembly 46 AC FET assembly 48 AC Input board 48 Bias board 49 DC rail board 48 DSP Control board 49 front panel 47 HP IB RS 232 board 48 Inverter assembly 49 output board 50 tools 47 trigger board 50 E electrostatic discharge 8 error codes 22 23 ESD 8 F firmware revisions 8 frequency accuracy 13 H harmonic distortion 13 hazardous voltages 7 hints 21 identification 8 inhibit calibration 45 initialization 44 interconnect diagram 65 J J307 voltages 39 40 M manual revisions 8 N notice 4 0 overall troubleshooting 24 p power on self test 22 R readback accuracy 11 replaceable parts ac FET board 56 ac input board 54 bias board 55 115 control board 62 dc rail board 57 58 59 DSP board
50. 9 AC Input Assembly Schematic Diagram RAIL LO FAULT LO w RAIL LO WARN LO RAIL PCLR ISO 5V RAIL FAULT LO RAIL LO 9 SEE oad 1444 ED o evene O O O NC odgo E43S 4 25 1 n 33 NYY AYTSO T Q n 4 4 gt re Q C3 C 4000 9 E 6415 6 _ 5 EN3S 3 E 3S S E430 4 EX24 TO 5 P934 Q Q Q Q _ 115 9 itas Oo 4 v HESS TH J4 j O JO w o D 0214444 C478 09000000 o 50 5 Olb 0T 4146 gt olbq0S REL 4 olbyv02 Cyot 0004 w 1 DETE O 22650 0 of 05 off 0 of 0 Figure 6 10 DC Rail Diode Assembly Component Locations sheet 1 of 2 RAMP fig 403 RAMP fig 404 PWM EN 5V RAMP PULSE fig 402 410V RAIL REF Q QO Q Q Q QO PU T Ree ORES Raa 9184836 O ES oo on zoo erate 919 9819 6666648 9 Razors 0491 e R478ro 3 9 2466 ejR468 o 910454 R406 R407 R400 R401 s lt o 00 0 00 0 0 Co Ieee c405 C405
51. B models Io 0 0125A Front Panel Display Low Range B models Io 0 0040A Total Harmonic Distortion Audio Analyzer 1 Front Panel Display 1 Frequency Programming amp Readback Accuracy Program 400 Hz 399 960 Hz Hz 400 040 Hz 0 005Hz Front Panel Display Fo 0 040 Hz Hz Fo 0 040 Hz DC Voltage Programming amp Readback Accuracy 425 VDC Output 422 575 Vdc 427 425 Vdc Front Panel Display Vo 0 363 Vdc Vde Vo 0 363 Vdc 425 VDC Output 422 575 Vdc 427 425 Vdc Front panel Display Vo 0 363 Vdc Vde Vo 0 363 Vdc Note 1 Measurement uncertainties are only valid when using test equipment listed in Table 2 1 2 Voltage Programming and Readback measurement uncertainties are for a 3458A DMM in the 1000 volt range 3 Measurement uncertainties in parenthesis are only if a 30 1 ratio transformer is used with the 3458A DMM 16 Principles of Operation Introduction Figure 3 1 at the end of this chapter is a block diagram showing the major circuits within the AC Power Source Analyzer and Harmonic Flicker Test System These units consist of the following modules e Front Panel Assembly e A2 GPIB Assembly e AC FET Assembly e A4 AC Input Assembly e 5 DC Rail Assembly e Bias Assembly e A7 Inverter Assembly e 8 DSP Assembly e Output Filter Assembly e 10 Control Assembly e All Trigger Assembly General Description The 6811A B 6812A B and 6813A B are 375V A 750V A and 1750
52. CORD OPT 831 6813A B 6842A 8120 6502 PWR CORD OPT 832 6811A B POWER CORD OPT 900 6811A B POWER CORD OPT 901 6811A B POWER CORD OPT 902 6811A B POWER CORD OPT 912 6811A B POWER CORD OPT 903 918 6811A B POWER CORD OPT 904 6811A B 8120 8611 POWER CORD OPT 917 6812A B 6841A 8120 5568 POWER CORD OPT 833 6812A B 6841A 8120 5566 POWER CORD OPT 834 6812A B 6813A B 8120 6505 POWER CORD PLUG OPT 841 6841A 6842A 8120 6505 POWER CORD PLUG OPT 841 6813A B 6842A POWER CORD OPT 842 6813A B 6842A POWER CORD PLUG OPT 844 6812A B 6841A POWER CORD PLUG OPT 845 6812A B 6841A POWER CORD PLUG OPT 846 6812A B 6841A POWER CORD PLUG OPT 847 6812A B 6841A 8120 6511 POWER CORD PLUG OPT 848 53 5 Replaceable Parts Table 5 2 Parts List for Technical Manuals 5962 0885 REFERENCE CARD 5962 0829 GUIDE USER 5962 0883 GUIDE QUICK START ENGLISH 5962 0889 GUIDE PROGRAMMING 5962 0837 GUIDE QUICK START FRENCH 5962 0839 GUIDE QUICK START ITALIAN 5962 0841 GUIDE QUICK START SPANISH 5962 0843 GUIDE QUICK START CHINESE TAIWAN 5962 0845 GUIDE QUICK START KOREAN 5962 0847 GUIDE QUICK START GERMAN 5962 8101 GUIDE QUICK START JAPANESE 5961 5190 GUIDE USER JAPANESE 5962 8113 GUIDE QUICK START CHINESE PRC 5962 8115 GUIDE USER CHINESE PRC Table 5 3 Parts List for AC Input Board C1010 1011 0160 4183 1000 20 1012 1016 0160 7606 IuF275V C1020 1021 0160 3969 CAP 015 uF 20 C1022 1023 1080 0160 443
53. DC RAIL Board Keysight Part No ELECTRICAL PARTS C400 405 0160 7640 330pF 1600V C409 411 413 419 454 475 0180 4129 CAP luf 35V C416 0160 4834 CAP 047UF 1096 C417 0180 3458 CAP 4700UF 50V C418 0180 4405 CAP 470 uf 50V C425 427 429 433 442 0160 5422 CAP 047 UF 20 449 453 465 468 C426 444 473 0180 4136 CAP 10uf 20V C432 0150 0050 CAP 1000PF 80 C447 451 495 498 0160 5098 CAP 22UF 10 C448 0160 4799 CAP 2 2PF C452 0160 4808 CAP 470PF 100V C455 0160 4831 CAP 4700PF 10 C456 0160 4823 CAP 820PF 5 C459 0160 4810 CAP 330PF 5 C462 464 0160 4797 CAP 3 3PF C463 0160 4807 CAP 33PF 5 100V C476 480 0160 4795 CAP 4 7PF C477 478 0160 4787 C F 22PF 5 100V C481 485 0160 4904 CAP 6800PF 5 C482 483 492 0160 4835 CAP 1UF 10 50V C484 489 0160 4791 CAP 10PF 5 100V C491 0180 4131 CAP 4 7uf 35 V C493 0160 4805 CAP 47PF 5 100V C494 0160 4822 CAP 1000PF 5 C496 497 0160 4824 CAP 680pf 100v D400 407 1901 1543 DIODE D416 419 1901 0731 DIODE 1N4004 10G04 D420 475 1901 1098 DIODE IN4150 D423 1902 0951 DIODE ZENER DS400 1990 0517 LED VISIBLE 56 Replaceable Parts 5 Table 5 7 DC RAIL Board continued E430 1 2 3 4 1251 5613 CONN SGL CONN E432 5080 2354 CABLE E454 1251 0600 CONTACT CONN M HS400 402 404 406 407 1205 0298 HEAT SINK J400 1252 2503 CONN POST TP HDR 1436 1251 8606 CONN POST TP HDR 1444 1251 5980 CONN UTIL 1445 1252 1707 CONN POST TP PST Q450 491 1855 0727 MOSFET 2N7000 Q475 476 1854 0477 XSTR NPN 2N2222A R140
54. DOS DIN Connector Ab DC Rail Assembly 5080 2397 Rail Choke soo 90 5002129 5080 2353 5080 2363 5080 2348 A6 Blas Assembly Inverter 5080 2380 5080 2699 5080 2358 J6 Line Switch A1 Front Panel Assembly Figure 6 1 Interconnect Diagram 36 n 544 5 545 ry 59 5 510 5 RS Ra S33 5 519 5 526 oe 537 re Figure 6 2 Front Panel Assembly Component Locations 45V
55. Enter the following front panel commands Voltmeter should read HIGH 5 Vdc SHIFT STATUS QUES EVEN ENTER If J113 1 does not go low trace the signal from the A8 DSP board at the following locations Normal DFI True A11 U164 13 U165 3 5 Vdc LOW A11 U164 12 U165 4 LOW 5 Vdc 50 us div S0us div A U150 1 DRXT 0151 5 DTXD SOus div D U154 1 ARXD J113 1 lt J113 2 lt E TRIGGER OUT PULSE F DFI TEST SETUP Figure 4 10 Trigger BNC Assembly Test Waveforms 43 4 Troubleshooting Initialization NOTE Initializing the unit erases all calibration waveform and list data Instruments that are being initialized for the first time or have suffered non volatile memory corruption should be initialized with the front panel EEINIT command To initialize the unit perform the following 1 Turn the unit on then do the front panel CAL ON command 2 Press 0 and 9 keys simultaneously EEINIT model should now be displayed 3 Scroll to the correct model number and press ENTER If the command is successful the front panel display will go through a normal power on sequence ROM Upgrade Identifying the Firmware The model number then firmware revision is displayed on the front panel for approximately 10 seconds when AC line switch is turned on The firmware revision is also acc
56. LEVELING_MODE R1810 16 IMON 10x N 47K 6 O_OUT_REL RESET IMON 10X Y 142 C1871 RESET SP 0PE OU_DISABLE 1504 nay n 500 2 2 5 n Y PROTECT 100 em GAL 0991 ras OUT RELAY R1800 Sok em SENSE RELRY i AA 16 3 pol RESET PCLR 2 15 4 eles DIODE_R_PCLR 3 14 S 15 rs 124 INU INHIBIT Srt INHIBIT 4 ZERO U tire PROT_CLEAR 5 Et RRIL INH RAIL_INHIBIT 6 11 9 20 OUP FRULT DDS_DOWN 2 PAM 10 z t 10 n 19 RAIL L FauLT 999 SHT6 em RAIL HI FRULT 11 75 eo 28 RATL H FAULT am 150 f 12 I9 13 ferez 01825 c1826 c1827 c18e8 1 c1830 c1831 0 DISRBLE ig TiO efrau a m iooPF T2eoPF 20 e20pF 20 220 20 220PF 50U 500 500 500 500 500 500 500 115 i i L GRL20U8Q GND 14 46 19U REF 2 Dogz N z_MODE 16 PROG R989 R854 5U 5U 4 BAS28 AC_MODE EU t INUERTER PERK NW R1810 v LO RAIL 50 LEUELING MODE I LIMIT UoBo 4 7K DET DELAY IMON 10X t 7 5 5U R996 R991 5 IPCL 4 64K 4 64K IMON 10X 3 3 MTS c1819 gt 12101800 U1800 Lx C987 Lv 6 _ OVER VOLTAGE CIRCUIT 2 fe C1823 C1824 C1841 50 0 047 15u 500 5U SU 0 047 500 S 57 C1852 R859 0 047 AA R1810 5978 50U 1M Uogo 4 1 47K 2 12 IPCL x LM319 R979 3 48K C1840 6 190 Y 0 047 15U REF 15U V Fi
57. Normal Result This test measures the total harmonic distortion of the output sinewave at full power 1 Turn off the UUT Connect load resistor and DMM as shown in Test Setup Figure 2 1 with S1 closed 5 8 amps for 6813A B 6842A 3 Record the total harmonic distortion reading from the audio Readings are less then maximum analyzer and front panel display of UUT specified limits Table 2 7 Frequency Accuracy Test Normal Result This test verifies the frequency programming and measurement accuracy of the output voltage waveform 2 Turn on the UUT Program output voltage to CV annunciator on Output current i at 1 2 amps for 6811A B VOLT 300 FREQ 60 SHAPE SIN CURR MAX 2 5 amps for 6812A B 6841A Turn off the UUT Connect the audio analyzer directly to the UUT output terminals Connect the frequency counter to the Monitor Output on the rear panel of the audio analyzer 2 Turn on the UUT Program output voltage to CV annunciator on VOLT 100 FREQ 400 SHAPE SIN CURR MAX Select AC Level on the audio analyzer Record the output Readings are within specified limits frequency reading from counter and front panel display of 9 400Hz UUT Table 2 8 DC Voltage Programming and Readback Accuracy Normal Result This test verifies the DC voltage programming and front panel readback functions are within specifications Turn off the UUT Connect DVM directly to the output terminals DVM negative lead is connected to COM outp
58. REF I L MON 6 TEMPERATURE INTEGRATOR SHT1 4 5 6 5 7 R1918 R922 R914 C906 k n HS_MON 16 9 16 9K VVN RI 3 1 R923 500 C1873 Kio R927 15u 20K 1x 0 047 75K C901 Md T_HS_OFFSET i n RON 4 0 047 V pu dz 2 Yo06 0902 8 TJ Q SC 9062119 022 j Bes PR Ro28 SHT6 oe V 5 U90541 1 3 1K v H gt a Ro24 Leosaiia _ H AA P 7 5K 15U R925 6 19U 0908 REF NOT 0 047 ANN phe R926 dac ie 10 e 7 1 A TAS 9 5 78 R913 a alt 6 aoce11a t HH 2 5 10K T 4 TEMPERATURE INTEGRATOR TLO72A 0905 R929 R918 6707 D ANN 11 RON 0 047 e 0 1 SHTS D 15V 50 DU R931 75K co04 8 T_HS_OFFSET 50 R915 R916 piis jie 5 e 906 13 12 908 2 TJ QP I PLUS 2 1 5 z SHT4 14 9066116 07 je le P TP R93S _ 05 _ 3 16K A Ros e0Ge1 18 AA 7 5K 0 047 R933 I L MON 9 V 16 1906 SHT6 Hoses 150 R934 I L MON 5 K R921 I_MON SHT2 4 6 I_PLUS 151 LOGIC_LOW SHT2 Ne Figure 6 19 Control Assembly Schematic Diagram sheet 3 of 7 I PEAK INVERTER I PEAK ERROR AMP R952 5 0941 C949 AAA t 25 IPEAK_CNTL I PEAK REF AMP 46 6 2 mE
59. RMS DC CONVERTER C868 15U 0 042 WFAC_MODU 500 VA AMP 05 r WEE U 15 AD637 5 R888 SHT1 6 e VIN BOUT N Nc OUT c 24 R1927 SI ii mMS QUT NC 551 1101858 C866 Cos RS 1M TT NOT OUT OFS C869 LOADED 10 cau cs 48895 81924 I_MON_RMS DEN IN BIN 0 097 511K E 15U CROP T C1852 V Y 6523 LEUELING MODE NOT T RMS 567196 COMPARATOR LOADED 35 LP365 R885 C878 NEP ja U_LEVEL CURRENT RMS DC CONVERTER R1916 150 NOT UR LEUEL R1829 j LOADED 13 a SHTS z CL LEUEL 05 U865 2 LEU FRULT dT 4 6 AD637 SHT5 6 UIN BOUT NOT 14 R1826 LORDED N R1909 C1865 11 OUT NC MONE EMS NVV 1 60 C873 31 6K 1 DUT OFS R 35 cu rre 6 xp 0867 DEN IN BIN NOT 1 4 LORDED 10874 C1861 NOT 0 22 RMS CURRENT LOADED 500 C1872 088 121 R1897 R893 R1206 UT T000PF i toe NNV NNV TzBMS PRDO 50 sou V I_RMS_PROG 150K 365K C1866 365K 23 7K 23 7K 1 1 1 SHT6 i 1 1 1 1 047 500 500 V Figure 6 19 Control Assembly Schematic Diagram sheet 2 of 7 FET JUNCTION TEMPERRTURE CIRCUITS MULTIPLIER THERMISTOR 15 URO42 CONNECTOR CURRENT SQUARER cree 6194 1 ANN REF lt 2 15 6 19U 2 J855 E 2 5
60. chassis Slide A9 output board toward the front of the unit and lift from chassis To reinstall the A9 output board perform the above steps in reverse order Replaceable Parts List Introduction This section lists the replaceable electrical and mechanical parts for the Keysight Series 6611A B 6612A B 6613A B AC Power Source Analyzers and Keysight Series 6841A 6842A Harmonic Flicker Test Systems Reading the Tables Each table lists electrical components alphabetically by reference designator and provides the Keysight part number followed by the part description Mechanical parts are placed after the electrical parts and listed alphabetically by part description Unless otherwise specified a listed part is used in all models of the series Model specific parts are tabulated by model number under the reference designator Note that the word in the Applicability column in any of these tables means that the item is applicable to all models Part Reference Designators A assembly K relay T transformer B blower fan L inductor TB terminal block C capacitor M mechanical U integrated circuit CR thyristor SCR P plug VR voltage regulator D diode Q transistor W cable or jumper DSP display LCD R resistor Y crystal oscillator F fuse RT thermal resistor J jack SW switch Part Description Abbreviations assy assembly m metric PCB PC board W with bd board mch machine sq square w o without gnd ground mm millimeter submin
61. interface assembly contains the CPU and GPIB interface controller for communicating with a GPIB controller The A2 interface assembly also contains the logic for communicating with a computer via RS 232 The interface type GPIB or RS 232 is determined by the operator using front panel keystrokes When using the RS 232 interface the operator can select the baud rate and parity using the front panel keypad The GPIB RS 232 interface assembly is an SMT assembly and is not component level repairable The A2 assembly is common to all models A3 FET Assembly The 6813A B and 6842A FET assembly contains 8 power FETs and 2 bridge driver ICs The power FETS and power transformer form an H Bridge converter The A3 FET H Bridge converts the 320 volt DC rail from the AC Input assembly to 500 volts DC on the A9 Output assembly via the A5 DC Rail assembly The A3 assembly power FETs switching frequency is synchronized with the switching frequency of the A7 Inverter assembly The FET switching frequency is approximately 42 KHz 1 2 that of the A7 Inverter assembly The 6811A B 6812A B and 6842A ACFET assemblies having lower output power ratings then the 6813A B and 6842A B use only 4 power FETs in the H Bridge Earlier ac source models used through hole FET assemblies Updated surface mount FET assemblies refer to the parts list are the recommended replacement part for all previous version FET assemblies The surface mount FET assemblies are not c
62. ramp generator for controlling the A7 Inverter assembly power FETs It contains the voltage and current rms dc converter circuits voltage and current readback amplifiers and all other analog circuits required to interface the output voltage output current and frequency programming and measurement capabilities with the A8 DSP assembly The A10 assembly is an SMT assembly and is not component lever repairable There are three unique A10 Control assemblies one for model 6811A B one for models 6812A B and 6841A and one for models 6813A B and 68424 A11 Trigger BNC Assembly The A11 Trigger or BNC assembly provides the communication and isolation path for trigger out U157 and trigger in signals U156 The A11 assembly provides the isolation optical couplers between the A2 GPIB interface assembly U153 amp U154 and A8 DSP assembly J115 The A11 assembly is an SMT assembly and is common to all models Output A4 AC Input A3 AC FET A5 DC Rail AT Inverter A9 Output 0 300VAC 120 220Vac Assembly Assembly Assembly Assembly Filter Relay 45Hz to 1KHz Assembly 425VDC Main Input A8 Digital Signal Processor Assembly DSP A10 Control Assembly 7 gt DFI RI A1 Front Panel Assembly 7 M TRIG IN Power 77 Bias Signal gt Figure 3 1 AC Power Source Analyzer Block Diagram 20 Troubleshooting Introduction WARNING SHOCK HAZARD EQUIPMENT DAMAGE PERSONAL INJURY Some troubl
63. the product Do not proceed beyond a CAUTION sign until the indicated conditions are fully understood and met Safety Symbol Definitions Symbol Symbol Direct current b Terminal for Line conductor on permanently installed equipment Alternating current VEN Caution risk of electric shock Both direct and alternating current A Caution hot surface Three phase alternating current Caution refer to accompanying documents Earth ground terminal In position of a bi stable push control Frame or chassis terminal On supply N Terminal for Neutral conductor on Off supply permanently installed equipment Terminal is at earth potential b Standby supply Used for measurement and control Units with this symbol are not completely circuits designed to be operated disconnected from ac mains when this switch is with one terminal at earth off To completely disconnect the unit from ac potential mains either disconnect the power cord or have a qualified electrician install an external switch Notice Keysight Technologies shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing performance or use of this material Protective earth ground terminal Out position of a bi stable push control Intended for connection to external protective conductor This document contains proprietary information which is protected by copyright All rights
64. 0 10 C1763 0 10 10 C1757 C1758 C1759 C1767 C1768 C1769 0 1 C1751 1761 205 55 zu 35V 630 0281 630 0283 1656555 R2701 R2702 80677 R2709 R2710 80677 NNV NNV 1 16 BIT A D AAA y 16 BIT A D 1890 612 1 UREF DOUT S 1890 612 1 UREF Ax UIN pour 24 Ax UIN pout 14 is SEN Busy He SEN Busy He AGND AGND CALI C1752 SAMPLE 2 C1762 C1766 SAMPLE 2 a DGND _ ae ha DGND 6800PF 6800PF 3300PF VEE mE 12008 oY 12UDSP 12 2563 1770 1 VA 55 R2716 2 R2794 10 2 R2791 0 0 0 12005 18UDSP A D_SAMP A D_CLK A D CAL A D_D0Z A D_D04 A D_D06 A D_D0S 5UREF 12005 50 SUREF 12UDSP Hoy Re795 M FILTER amp A D CONVERTER 5 R2796 12VDSP FILTER amp A D CONUERTER 6 R2721 R2722 2 R2723 0 R2729 R2730 2 R2731 C1773 0 10 10 C1783 0 10 10 C1777 C1778 C1779 C1787 C1788 C1789 0 1 0 1 124 hs SE zy Vs 1 C1775 35 UCC VDD 550 55 550 UCC UDD 35U 63U 0285 0287 R2717 R2718 6 0784 01 a5 90677 Re725 6 AD677 TEADES im R2719 R2220 65 16 BIT A D 16 BIT A D 7 0784 11 5 2 1 3 1890 612 1x DOUT 1890 612 1 UREF DOUT 17 Ax lt 2050 920 1x u DOUT Ax L VIN LT1124 Ax CLK LT1124 AGND 4S BUSY SEN Busy He C1774 CAL C1784 AGND CaL CLK CK IT C1772 C1776 SAMPLE C1782 C1786 SAMPLE 4 Ms DGND DGND GB00PF 3300PF
65. 0 Control Assembly If the A8 DSP Assembly is replaced the supply must be initialized first see Initialization previously discussed in this chapter and then be calibrated Inhibit Calibration Switch If CAL DENIED appears on the display when calibration is attempted or if error code 401 occurs when calibrating over the GPIB the internal INHIBIT CAL switch has been set This switch setting prevents unauthorized or inadvertent power supply calibration You must reset this switch in order to calibrate the supply The internal calibration switches are located on the A8 DSP board and are accessible by removing the top cover inner cover then lifting the 10 control board and A8 DSP board assembly Switches 1 and 2 set the calibration configuration The three switch positions are illustrated as follows Normal Clear Password Inhibit Cal off on off on off on m if 1 m Em 3 3 3 4 4 4 Figure 4 11 Calibration Switches Normal This is the default switch position The calibration functions are accessible after entering a numeric password The default password is 0 and is changeable by the user Clear Password The calibration password is reset to 0 and the remote programming language is set to SCPI This option is useful if the user has forgotten the password Inhibit Cal In this position the calibration of the power so
66. 003 roza lg 3 8 92 0 0112 z M z 92 0 0L12 1063 2063 A e lt 9089 0910 82 6690 82 6690 8 Wd ose ose 7 C ee cee SA t 1966 6690 8 6966 6690 M v Aris V X606 vrzo 8124 zs 9089 0910 985 6690 9869 6690 8 0968 92 Wd A007 ose ML ose ML Sx 0L VO 1 5 A AAA 58 lezy 0910 CDM 920 d 6269 agg 000 8 REL 298 2968 6690 lt 9 8256 gba V MSL oS 9f e oF 85 79 z AAA Ih Ya 2 8 O 5e9 GBC xzg 6vzd 298 RAS 28 v e 9 086 6690 A V Alaz MWA 1562 0910 6690 9699 0910 6690 9699 0910 02 08 MOE dd 02 08 MOE dd AML e e S 02 440066 Sl S 02 440066 v 8 0910 ANA if e AAA Y e V 440 8220 0120 912 5 i 9229 8644 0910 8 1 7581 8 1 7581 we AI ado9gozdoul 212 0116 ado9gozdoul 2212 0116 5265 e a lt wl HNO e aft No FINOS cor 9 ox 1229 6 ap 58 e S 9021 S 8021 266 6690 S8 ge amp S v 001 SZ 88 e RACK tL6 6690 5 2 SN Q Eg V AYI 58 AA o 528 i syed gt ae Scu 288 2129 ST S88 5 Ses eos o 225 S lt 9990 6981 225 s lt 9990 6981 LLHSTOPIN LLHSTOPIN 5 m ES A E LIN A 2 9166 66
67. 047 DG444DY ZL DRC PROG FAN AMP sey 1 SHT1 7 FRN PROG 5 10980 2R_DAC_PROG H1 8 SHT1 2 2 IMON 10X 4 TLO72A WF_TRIM coge sHT1 ee RESET PROG 0 047 5 5 15 500 SUB_ENB SHT2 C984 SENSE RELAY dm ot INHIBIT t a 500 RRIL INHIBIT ee I_MON C996 SHT2 3 4 7 e s RRIL HI FRULT V a wg XV and RAIL_ LO_FAULT em 2e 10 11 18 14 135 4 15 1 3 7 16 6 9 V NINIVIV REF RMS IM VN rr RMSU TUM 0 OUT REL WV W E O SENSE REL I L MON MSU WFDC SHT1 3 4 5 M RAIL_INH _MDN_ SHT e 0992 5 5 2 e 0 047 IMON 10X sou IMON_10X C998 3 042 FRN CURRENT NC 500 EXT CLK SYNC 15U T5U V ILM REF sb NC NC NC NC NC NC NC NC NC NC NC NC 64 32 63 5 21 5 51 19 50 1 49 17 16 47 15 46 14 45 4_ 5 4 33 1 J824 OUTPUT BORRD CONNECTOR Figure 6 19 Control Assembly Schematic Diagram sheet 6 of 7 SHTS SHT2 5 SHTS SHT4 SHTS SHT4 I EXT PROG MON LO 6 e MODEL NO 6812 MODEL NO 6813 REF DES VALUE PART NO VALUE PART NO U_MON R857 0 0699 2643 0699 3046 SHT1 2 6 SHT2 2 4
68. 0698 55 PN STES 1994 BR 5 806 6690 88 5 8066 6690 Ba v 961 Ba 9 V 9561 e Ns 9 619H 0994 5 632 u u E o E o 8 8 J625 2 PIN UTILITY 1251 7616 9 L651 1 8UH 149285 RAIL R628 NotLoaded R627 45V DSP 45V 0 OHM 0 OHM C645 0699 2643 0699 2643 45V DSP L650 U620 0047 D 6 06179 Jo F602 R630 4 MO78M05CDT R633 16 0160 5944 SHDN sw YY e e e e m EN J638 16 o 91402261 i 2116 0944 TW OQ COMM s 656 C646 T m ag 1W 200 0699 2643 RC PIN
69. 089 1 ime 15 t Z899 Pepeo1ioN 890 292671 A009 p 15201 1090 N 00 1090 19261 e9z6rl 926vl 926vl IN A000 002 ML 002 ML 002 9z6rL 926 926 19261 g 49089 99 91 91 Sl 002 ML 002 ML 002 IN AO00L 91 91 AS 91 44089 9090 e894 v99u S894 n 0894 1894 z894 2090 2 z 992671 T is 982671 HA8SZ091dV HA8SZ091d4V 9271 0216 No 9271 0216 ge 909d 5610 e e teal 692601 26926 291 98261 e 9 99261 882091 94 7090 509 UA8Sc091dV s 90900016 pen TRES S 971 0216 NS EE 80120 90288 pj ttj o 8 fo fo fic 8 0291 V E 8 2291 8 LEN 090 090 MEET u gt S u gt s ES g STEZ eoa e es BA es Salz 9 9 ye 9 9 s 5 0266 6690 m S 0268 6690 V OL V OL e e e e ssou 6 9 1906 0358 1906 0358 9 8590 o o 88 BL 88 88 88 ash Ng 500900 96 lt 8 aseo ete BPN 1690 19 a 248 a a 288 a 248 LS o o p o o UT BRB SERB BRB o ORS 8 amp 8 c amp 8 amp 8 c amp 8 reo wr 5 o N lt 8 lt 8 8 8 BTES a e 55 a e 50 Be 35 pis 98 SS M w 85 8066 6690 85 8066 6690 8 28 Y 961 3 58 o V 96 eo cL 6 oL t rsa Sti aNs 58 STES
70. 0K R703 2 53U 1 0 1 R708 0 1 10 R205 3 fee 0 Mi R704 0711 AA 10 2 2 200 1 1 1 15USEC SUUNR 00 15 DETECT 6 13 7 NOMINAL R715 D701 10K 50 UNREGULATED DETECTOR R714 WN 2 SUREF R713 316K MEZ 5 3 16K 710 1 R716 560 1K E R711 au 505 2 5K anh 208 rb202 V PAES Ax 1 2 11 lt 14 2 16 1 lt 13 PCLR R712 R717 13 7K p 10K 15USEC 2 SUREF 1 Vin 2 53U 1505 INU PCLR SU BIRS L SUUNR 10 NOT LOADED M3 02200 l 052 STANDOFF esovec Figure 6 17 DSP Assembly Schematic Diagram sheet 1 of 10 AC0 23 SHT 3 4 BYPASS FOR Ife 0210 505 505 s Jes p pu 500 500 505 505 TSUSEC DGND 6 4 40 74 DC0 21 SHT 2 4 PCLR SHT 1 3 8 RESET SHT 1 4 8 3 23 acaa 91 AC20 AC19 18 12 16 AC15 AC14 AC13 198 11 AC10 aco 8 AW 6 ACS AC4 AC3 aca AC1 ACO DC31 0 30 0 29 0 28 0 27 D 26 Dcas 0 24 0 23 0 22 0021 D20 0 19 DC18 DC12 DC16 DC15 DC14 0 13 DC12 DC11 DC10 D 9 D 8 D 2 D 6 DCS DC4 DC3 Dca DC1 D 0 nes A21 A20 A19 A18 A17 A16 A15 A14 A13 A12 A11 A10 A9 A AG AS 84 AS A1 A0 D31 D30 D29 D28 D27 D26 D25 D24 D23 D22 D21 D20 D19 D18 D17 D
71. 1041 5 O O C1013 K1040 9 z O 0610200 q P L1020 5 8 5 ocioeeo emo 0 01060 zi J1047 2 J1047 1 m n o s o ol O C1060 O E1048 1 O R1061 1048 2 i Z R1040 C1016 O O c1062 O 5 O c1064 O c1066 O O croes c1067 O O cioe c1oes O C N O e Rusa R108d o D 080 R1081 je e TP1050 1 D 10 Q TP1050 2 11035 de oap O OC10800 41042 0V 150 Vdc Figure 6 8 AC Input Assembly Component Locations 300 Vdc 01 500 Todd 1048 2 E1048 1 1020 r A M M M M LE pew eo M L1060 F1080 RAIL C1010 f J1049 908 1000 M4 UNPL R1060 C1013 C1014 c1015 4 1020 3 4700PF 01091 Sik 010602 01064 010869 UK 2 TEES m ae 2500 E TP1050 2 1M 1 1 2500 2500 1045 1 01051 1052 10K E AC c1061 281061 1065 1065 1067 PCB paws C1021 nk R1082 TP1050 1 12 AWG D gem 5 SZDS1080 2 619 Tee L1061 TEON J1047 2 J1047 1 oor 608 1047 M6 M4 UNPL INPUT RLY ISO TO BIAS PCB AC_SWITCHED1 Figure 6
72. 127V 47 63 Hz 207 253V 47 63 Hz Load Resistors 20 ohms 5 A 1000 W minimum 250 ohms 2 A 500 W minimum 120 ohms 2 5 A 750 W minimum 51 ohms 6 A 1800 W minimum GPIB Controller Full GPIB capabilities HP Series 300 or equivalent ratio transformer is not required for a valid MIL STD 5622A 4 1 test The 30 1 ratio transformer is only required when a 4 1 test equipment ratio is desired using the Keysight 3458A voltmeter in the 1000 volt range 2 Performance Tests Current Monitoring Resistor A 4 terminal current monitoring resistor current shunt listed in Table 2 1 is required to eliminate output current measurement error caused by voltage drops in the load leads and connections Constant Voltage Tests If more than one meter or a meter and an oscilloscope are used connect each to the sense terminals by separate leads to avoid mutual coupling effects Tables 2 2 through 2 8 provide the test procedures for verifying the 6811 A B 6812A B 6813A B and the 6841A 6842A compliance with the specifications given in Appendix A of the User s Guide Please refer to the CALIBRATION PROCEDURE or TROUBLESHOOTING if you observe out of specification performance The performance test specifications are listed in the Performance Test Records at the end of this chapter You can record the actual measured values in the columns provided When performing the load tests select an adequate gauge wire using the procedures given in the User s Guid
73. 12DAC2_WR 15 Mone Nel MSBT EE SHT 5 9 AL1 T 45UDSP 8DAC1 0259 108202 0 1 10 UDD 500 200 8DAC_LD i 748 8DAC_CLK 17 10 SHT S Li 18 8DRC SDI 20 5 23 VINC 2 SUREF EE y 14 2 SUREF 15 R794 R795 OV_OFS RL_OFS 0 NOT LOADED 0 0 NOT LOADED 10K 1 RL OFS A_SEN1 16 5 2 A_SEN2 BADC1_A 8RDC1 B SHT 2 9 BADC1_C BADC1_D SHT 7 1 2UDSP 12DAC4_A 5240 ae SHT 9 12DAC4_B 1 2UDSP 12005 C252 CLAMP 12 0 1 R742 TOURER 500 10 6 0744 0244 6 R241 02121 2 AMY 41 b I1 5 8 1 96K _ 5 J722 2 LT101z 3 x LT1013 2 222 16 1 ire o 2 A_SEN1 0258 L800U 165058 A_SEN2 7 5 le SCS 0 1 7 9 12Daca 5 A11 A11 11 18 12005 12 faa 15 16 12DAC4_B 12DAC4_A 19 otg 4 Z 19 20 UDD UREFA o o 0741 AD7837 55 DURL 15 BIT 27 28 DBO 36 _ 0 Da1 RFB Ale BADC1_A z7 e435 BADC1_B DB2 a BADC1_C 33 2 8RDC1 D DB3 OUT A 4 LULA o o rl GND SINGLE PHASE DB7 RFB e ANALOG CONNECTOR LDRC out gj LULB R750 cs WR BUND 10 1K 0 x Al 12UDSP DGND USS UREFB C762 11 NA Sst A11 500 C2708 R749 15USEC MAN OK AGND_IN R2743 1 OV_OFS SHT 1 LT1013 15VSEC 10 C763 m 12UDSP 0 1 Y 8DAC1 C All 500 12005 o 8DAC1 D 8DAC1_E SHT 9
74. 14 0164 157 10 R181 x 14 T C172 I mes Vi UTES Rigo 464 1 4112 1 if I 1 10 ACT14 5 ds 110 2 0 047 7 wv Y RI DFI TELE I Jeck 2 14 U163 J113 ALF 4 11 10 I 3 RCT14 C178 POS 2 ies reo I C154 ux I R154 sou 0 047 i sou Y 10K riaz Y16505 R185 49 AA AA 1 10H 464 1 ACTIA 464 1 10K 1 ARXD RI 1 104 17104 17104 Y 1 Mien CLAMP I le zi D162 I 11 I I I 6 2U l 500 5U uw I R194 10K 1 R155 0 047 1x 500 1 104 TA 191353 I 1 104 l T R 5 464 1x ACTI4 1 1710W g V v NOT LOADED I Z a REPE Figure 6 23 Trigger Assembly Schematic Diagram RT1300 J1355 10 1355 20 Figure 6 24 Thermistor Assembly Component Locations J1355 2 3 rt1300 J1355 1 Figure 6 25 Thermistor Assembly Schematic Diagram E1256 6 Al Figure 6 26 Transformer Assembly Component Locations TRANSFORMER Figure 6 27 Transformer Assembly Schematic Diagram Index cal denied 45 calibration 45 post repair 45 change page 8 component locations AC Input assembly 73 bias assembly 80 control board 98 dc rail diode assembly 75 DSP assembly 86 FET assembly 71 front panel assembly 66 HP IB assembly 69 inverter assembly
75. 16 D15 D14 D13 D12 D11 D10 D9 D8 07 06 05 04 03 02 01 00 GND 0710 TMS320C31 o Ne fy jon lt O O Ud y N t R722 20K R723 2 R721 SUSEC A 20K SUSEC J724 Y Rae mim EMU1 NC NC NC 4 64K NC NC TIC NC 108 NC INTZ INT2 INT1 INTO NC XF1 0 RESET R W STRB RDY NC H1 TSUSEC R751 eje whe TEST HERDER SUSEC R786 20K NORM EMUL H3 SUSEC A TSUSEC NORM EMUL TSUSEC A C720 5USEC 1000 50 WR lt SHT 3 NURAM_CS R W T SHT 3 4 TIC qc 5 4 H3 oo INIO o RAM_H_CS 4 SHZ SUSEC C721 20 1000 5 0214 PRLCE16U8 1 AC23 pi zaak 19 1 07 aca2 3 18 21 412 1406 513 1 05 RDY 114 1404 I5 1 0365 nes a I6 I 028LL7NC 5 I INC STRB I8 1 00 NC I9 0E GND R787 4 64K R2 93 SUSEC C722 0 1000 5 PALCE16U8 1 noaza H1 5 10 cLK I1 1 07 acea 5112 170628 ace1 4 TET 513 1 05 114 1 04 IS 1 03 AC a I6 I 02 R W 9 I7 1 01 2 NC STRB 11 18 NC IO 0E GND R788 4 64K 5USEC C72
76. 2 e rreg 25 30 Vdc 1 rp A 8 zl 0699 3760 3 a m Pulse Width 2 e e e i 1601 E m TENA BLK POST 3 GND Es o 2 0 047 D 4 8 e 333 r g o Be TOM g B 0160 5944 Not 885 p 885 4 10 7 g souncE A gL UY E g ozk ozk D 1251 3305 z 855 s 8 52 s 255 1 A a 4 45V NN Turn off Drive E 228 e 89 29 5 m OE az 521788 RES 8 Seg 15 R639 U607 S S S 58 328 95 STL lt gt 28 CXT R CXT T 2 149277 45 R637 BB g 99 g ERR SOURCE 2A Opo 9 lt 5 S 10K A lA OA EL 9 23 5080 2371 lt lt x 6 GND 0699 3970 261 B S lt Notloaded AFS L 8Q n 3 8 6 ELS 0699 3830 AFS ero 8 EE 5 e o se TORS m 7B og Unreg C GND inreg Common ond GND 16 9 e e ae gi o2 5 ps Q625 8383 X33 o2 5 3 5589 Break before make circuit 2 N DOK vV 9258 Ire gs 45V 45V lt Q ooa Mrs 88 e 238 e 228 58 28 WHT J646 C643 3 63 1 ES Low 2 DSP B ross 261 an me To DSP Board FET 3 No Connect 16 16 58 0699 3830 n siuk POST 0160 5944 8 25 es BLK 4 45V DSP Comm vco V VCC S es Ses 1251 3305 U605 0606 85 BS i x 5656 5 18205656 5 m 0M0 Tumon Pulse Width 2 2 5 e e e lt x Postive edge tigger 10 g g p zB 35V
77. 2667 02665 t P3 u gt 8 5 gt p 528 gt m 1250 1918 aoe NOSE Ld MOSZ 13d STEZ 55 220 0 501 2000 601 Sg papeoT ION 29 Ea T D oo 8 G 9271 0216 6099 8 9 1 0 16 oj 417 i 8 I 8 APT6025BVR 8291 6S26vl 692621 APT6025BVR 429 E X B N QN e ES ES f _ 5 Ej g 9213 0116 9 g 9 1 0 16 8261 8261 I 4 Se Tle N e N a e 291 9291 APT6025BVR APT6025BVR 149256 149256 926vl 926vl 926vl 1926 ooz 002 Mi 002 IN AO00L popeo1 iov 91 9 91 65 29089 1926 926r L 926vl 926vl IN A000 002 ML 002 ML 002 ML 9894 1899 8899 2099 39089 S 91 91 AS 1 1199 6894 0694 1698 A009 1926 1 09 g09q 6079 6690 GOF 6690 60 6690 60 6690 60 6690 607 6690 ooz ML 002 ML 002 002 ML 002 ML 002 ML MEL MEL MEL MEL XEL 5 MEL e e z694 694 v694 s694 9694 1694 9 0691 13Wd A009 0 EE 9190 9 2611 9 2821 9 2821 13d A009 FOL 1 9293 day 1 283 e e e vI90 T 9 1 5 1 9 2671 gt 19 13Wd A009 ya 29693 61293 0 EE 8 19 25 9 ug z 58 2561 6690 1261 6690 2 12 1 6690 1281 6690 o mw 5 mw 5 W o W 1098 09 094 1926 1 1996 WW AO00L AO00L 34089 948 34
78. 3 1000 500 PRLCE16U8 H1 i I0 CLK SUSEC SUSEC UIRQ zi 1 02 INT3 4 RI 12 1 16 INT2 515 1 5 INTi R224 R725 TIN2 1404 INTO 4 64K 4 64 PCLR 2 Is 1 03 NC I6 1 02 NC I I 01 NC I 00 NC 19 0E GND 10 XWSTRB RAM_L_CS Je SH3 SH4 UIRQ RI TIN1 SHT 3 XF1 a In o SHT 3 4 RXAIRQ RXBIRQ sHT3 UCLK Figure 6 17 DSP Assembly Schematic Diagram sheet 2 of 10 NOTE THE LORDING OF R2760 R2761 R2764 0 18 DEPENDS ON THE RAM SIZE DO NOT SHT 4 LOAD ALL OR ADDRESS LINE 17 WILL BE DO NOT LOAD TIED TO SUSEC R2760 12 R2761 ke 45USEC SUSEC i C225 R2762 C226 C729 ACL zd RAM_L_CS 0 aca S ze 1000 1000 58 1000 acs E6 55 UCC 50U 1 500 wee 5 5 5 2 U720 U721 U724 x HM628512 HM628512 DS1220Y aco EB REH H CS zais EE ais ie ES 256K HERR 185 2817 CS 55 RAM L_cS 2 817 CS 55 1 RAM_H_CS j 25 A16 OE A14 WE R W 14 10 ACIS s ACS 31 ACLS 26 iz 20 aM 9014 5 Ma eio 5 NY ac12 2 a2 or 22 E 18 11 AC13 28 ALZ 11 23 Ait 12 4 ate RAM RAM 10 21110 AC11 25 912 8 11 25 512 8 09
79. 3A B 9140 1743 CHOKE 82uH MOLDED 6841A 6842A R500 501 6812A B 6813A B 0698 3260 RES 464k 1 6841A 6842A R503 6812A B 6813A B 0812 0047 RES 5 596 5W PW 6841A 6842A R584 591 6812A B 6813A B 0811 1810 RES 3 6K 5 3W 6841A 6842A 60 Replaceable Parts 5 Table 5 9 Parts List for Control Board Reference Desig Ap plicability Keysight Part No 5080 2410 Programmed GAL Freq 5080 2408 programmed GAL Status 5080 2409 Programmed GAL Protect 5080 2407 Programmed GAL PWM RLY Table 5 10 Parts List for Front Panel Keysight Part No U004 All 5080 2384 Programmed ROM front panel Table 5 11 Parts List for DSP Board 6841A 6842A 5080 2421 6841A 6842A 5080 2422 6841A 6842A 5080 2423 6811A 6812A 6813A 5080 2411 6811B 6812B 6813B 6841A 6842A 5080 2424 6811A 6812A 6813A 5080 2412 6811B 6812B 6813B 6841A 6842A 5080 2425 Table 5 12 Parts List for Thermistor Board Front Frame M2 _ Window M3 lt Label M4 N lt Knob 5 o ww Nameplate M6 61 Diagrams Introduction This chapter contains drawings and diagrams for troubleshooting and maintaining the Keysight Series 6611A B 6612A B 6613A B AC Power Source Analyzers and Keysight Series 6841A 6842A 6843A Harmonic Flicker Test Systems Unless otherwise specified a drawing or diagram applies to all models of the series see general schematic note 1 Wiring connections to external equipment are shown in the ac sour
80. 4 485 0757 0472 RES 200K 1 R479 481 491 0757 0442 RES 10K 1 125W R480 487 1410 0757 0407 RES 200 1 125W R483 489 0757 0434 RES 3 65K 1 R486 488 0698 4486 RES 24 9K 1 R490 0698 4446 RES 267 1 125W R492 0757 0273 RES 3 01K 1 R494 496 0757 0427 RES 1 5K 1 R495 497 0757 0401 RES 100 1 125W REF U463 1200 0639 SKT IC 20 CONT T491 06624 80091 XFMR PULSE TP401 404 1251 5380 POST TP HDR 6603 U416 5060 3212 ASSY HS 317T U417 1826 0122 IC 7805 340T 5 0418 1826 0527 LM337T 0423 1826 2341 IC REG TL7702BCP U424 1826 0138 IC COM LM339N U433 434 1990 0732 OPTO ISOLATOR U435 1990 1502 OPTO ISOLATOR U436 1990 0429 OPTO ISOLATOR U447 475 1826 1533 1 34072 0449 1826 1437 0462 1826 0065 IC LM311 U463 5080 2405 PRGMD GAL DIR U464 1820 3673 IC MM74HCI23N U491 1826 2343 IC REG TL598CN W400 7175 0057 WIRE 22 58 Table 5 8 Parts List for Output Board Replaceable Parts 5 Reference Desig Applicability Keysight Part No ELECTRICAL PARTS C500 503 C506 C508 516 C533 534 541 544 C540 543 C542 554 C545 547 C546 C548 549 575 576 C550 C550 C553 555 C556 557 C564 565 C568 569 C570 C571 C578 579 580 D501 502 Red Black J524 J526 527 K500 K501 K502 503 L500 501 L500 503 L504 L504 505 L507 508 L509 L512 513 L514 P527 P537 P544 545 501 502 R502 R503 565 576 577 R506 507 512 515 R508 509 566 567 All All All All All All All All All 6811A B 6812
81. 4 86 CHECK Q627 Q 629 Q 637 ANDQ 639 DRAIN PULSE SEE FIG4 8D CHECK 633 635 Q 641 AND Q 643 DRAIN PULSES SEE FIG 4 8E CONNECT EXTERNAL 30 TO J627 TO J 627 1 TO J 627 2 REMOVE CABLE S TO J 526 AND J 527 ON A9 OUTPUT BOARD CONNECT OSCILLOSCOPE TO J 526 AND OBSERVE WAVEFORM FIG 4 8F IF WAVEFORM IS NOT CORRECT GO TO A ON NEXT SHEET IF WAVEFORM IS CORRECT CHECK A9 OUTPUT BOARD FILTER gt Figure 4 7 Inverter Assembly Troubleshooting sheet 1 of 2 33 4 Troubleshooting NOTE The procedure below references the Slow Start Procedure This procedure should be used whenever the A7 Inverter board is replaced to prevent destruction of the replacement inverter assembly if the original cause of the failure did not originate on the A7 inverter assembly REMOVE A7 INVERTER ASSEMBLY CHECK FOR CRACKED OR BROKEN FETS BURN MARKS ON PC BOARD IF BROKEN FETS OR BURN MARKS ARE OBSERVED REPLACE A7 INVERTER ASSEMBLY APPLY 20VDC J638 2 AND 5VDC J638 1 J638 34 IS COMMON OR USE SLOW START PROCEDURE SEE STEP E BELOW AND SEE A7 SLOW START PROCEDURE 12VDC U619 2 amp U620 2 TROUBLESHOOT 12 VDC BIAS TROUBLESHOOT Q644 amp U621 PCLR CIRCUITS U607 1 amp U609 1 TROUBLESHOOT 0602 0619 amp INN OFF CIRCUITS A USE 8 PIN DIP TEST CLIP TO CO
82. 44 Canada Keysight Technologies Canada 5150 Spectrum Way Mississauga Ontario L4W 5G1 tel 1 877 894 4414 Europe Keysight Technologies Test amp Measurement European Marketing Organisation P O Box 999 1180 AZ Amstelveen The Netherlands tel 31 20 547 9999 Japan Keysight Technologies Japan Ltd Measurement Assistance Center 9 1 Takakura Cho Hachioji Shi Tokyo 192 8510 Japan tel 81 426 56 7832 fax 81 426 56 7840 Technical data is subject to change Latin America Keysight Technologies Latin American Region Headquarters 5200 Blue Lagoon Drive Suite 950 Miami Florida 33126 U S A tel 305 267 4245 fax 305 267 4286 Australia New Zealand Keysight Technologies Australia Pty Ltd 347 Burwood Highway Forest Hill Victoria 3131 tel 1 800 629 485 Australia fax 61 3 9272 0749 tel 0 800 738 378 New Zealand fax 64 4 802 6881 Asia Pacific Keysight Technologies 24 F Cityplaza One 1111 King s Road Taikoo Shing Hong Kong tel 852 3197 7777 fax 852 2506 9284 117 118 For instruments with Serial Numbers KEYSIGHT 6811A 0537290101 and up KEYSIGHT 6811B US38390481 and up KEYSIGHT 6812A US37290101 and up KEYSIGHT 6812B US38390451 and up KEYSIGHT 6813A 0537290101 and up KEYSIGHT 6813B US38390285 and up KEYSIGHT 6841A US37340101 and up KEYSIGHT 6842A US37340101 and up For instruments with higher serial numbers a change page may be in
83. 45V OA a 12 5V g 9 e 12 45 N R635 R640 N 7 C637 ext ricxt iA 7 cxT picxt Z 7 365K B ND 10K asta as 0699 4417 lt 0699 3970 lt o 0 047 D AN S a E 8 8 og p Bo STES STES Not Loaded 5 co 9 o g2 o ss ro 6 v v i 7 lt n2 8 zu To Control Board AON uo HCPL 0631 5 R605 Tum on Drive Enable 7 OR POST 3 Nvorr e e e RED 4 511 B Low Disabled LI Spare an n Z 5 0699 3082 5 E STES gore I 3 Break bef ke circuit 1 E 8 E U602 8 a 8 reak before make circuit 2S lt lt amp Q619 16 D640 85 _ 5 1906 0358 BS U605 Ae EX TUE 54 3 1820 5656 15 2 27 zo e CLR Q mg 0 149271 Not Loaded 2278 HCPL 0631 5 gt B COSS 1 ra 2 45V e s Z Negative edge tigger Ress m 14 15 3 65K B are Jeoo m x og 0699 4417 20 9 33 gd 95 Bias Test 1251 4670 2 8 vec STOS T602 GATE J E 873s U608 Ol499T x9 M 4 z HEADER UV es i GAL16V8 e aO mg 655 16 i 7 g SOURCE OA j POK i9 _ 22 8 Q25883 680 5 PWMIN TOFFM 2 9 do eo Di e D 4A V lt m vosle a Sag DE 73 f5 lt s 4 17 oJ 88
84. 5 00 V div 0 00 V 2 00 us div SCOPE DC COUPLED GATE TO RAIL 5 00 V div 0 00 V 2 00 us div SCOPE DC COUPLED DRAIN TO RAIL D 20 00 V div 0 00 V 2 00 us div J526 OR J527 EXTERNAL 30 VDC TO J625 OUTPUT ON Figure 4 8 Inverter Assembly Test Waveforms sheet 1 of 2 35 4 Troubleshooting 36 2 00 V div 0 00 V 2 00 us div 5 040 us G 10 00 V div 0 00 V 2 00 us div E626 1 E627 1 TO E626 2 E627 2 EXTERNAL 30 VDC TO J625 GATE TO 1 mA mV INVERTER CURRENT EXTERNAL 30 VDC TO J625 OUTPUT OFF 5 00 V div 0 00 V 2 00 us div 5 049 us 200 mV div 0 00 V H 5 00 us div 25 00 us Figure 4 8 Inverter Assembly Test Waveforms sheet 2 of 2 Troubleshooting 4 Slow Start Procedure WARNING SHOCK HAZARD EQUIPMENT DAMAGE PERSONAL INJURY Failure to first follow the slow start procedure after replacing the A7 inverter board may result in catastrophic component damage when powering up the instrument When covers are removed al
85. 53 RILZDS C726 R1POMRIPOSR1Par REARS 0113201 86 1C TAPS R2762 REIYBSRIVSB RILTSO R1 786 R1287 1 90 RI 491 I 742 1 1 2 1 5 44 R1 78H RIPGSR1 PHB R LZ7BO AZB RIZI9R PSP RI2Z83 ZIBPC1UB8 C12PB1C HR 0 26517 5180 RILZB 1 5 PAK REAP EX5CiFB0 C1PBE7C TZ gb RIZG1R1PZP RIZ 100H R1205 RIP AEA 1 5 C10 00 20 Reap R1EUBRIPUP RAPT READ 20 251118 RAD c m 10 1 4 N R181BRIDISR PTORT7 1 2H RIZBSR1P P RTHP 1 6 1 1 1 5 1 229 ae RI PARR IPAS R PGARIZbS 01850180 C 1 PEI C 1219 51405281 R ZSBRILZEO RIPAR 1743R 1P36R 1757 1 1 5 22 R PSORI7B1R 1746 RIA BAEN zam 3 sgdja 2229 gagra 84 2229 te r NI s J d d PE J 864 t I el S929 9829 94 620 dbdee diay amp Baa wd dadHu B de BAN deka 988
86. 5813 ll 1762 2769 82 984 o a 5 6 9 Sse Ss pide ESSERE 3 r3 aJ ch I S289 B ES sceal Zio SEO sesta pzeyMlt28Y o B E cte See SS EE rara M228 o Qu O Yum ood Simeces mozera Sg po a VC O D O etsam E O 2 s e umor 5 x s i zB 5 OO O 9 58 S n o ip a oH Tae BY E Bomers O 02813 6ggsmm o b08060BYQ 02812 jap S S 8088 Lo 68 e 7083 o TEST TN ME es gapio 082 9 a ES gm 8S81al_BIBTFAAS Bye 2060 0 gom Sa E Z4EFOO 2088 o 8 5 8r813IIIB GTP dHI3SG 06818 O NO zi E ss cs ore xa D mp 0114810 cg omo ch 1 ch I 06 SES LIBI See TZ8r ersta La nol SZBgTa OPO SE BB 9655 foo B Z O Jee SER Prodan o N 6 E 17 zegral LTI I sd 228r BB a B ooo
87. 6 I MON R924 1 78K 0699 2981 72 5K 0699 3048 5 4 U EXT PROG SHT1 R926 28 95K 0699 3071 5 0699 3620 R932 1 7 0699 2981 0699 3048 R934 568 95 0699 3071 0699 3620 R977 20K 0 1 0699 2491 0699 2489 R1801 28 7K 0699 3071 0699 3008 R1915 21 5K 0699 2986 10K 0699 3051 R1924 11K 0699 3066 NOT LOADED R1877 AAA SHT4 U MON INU SHT4 6 C1845 1000PF 2 DRC REF 500 SHT6 15U CAaP2 BUF SHT4 R1872 909 1 5 SHT5 6 e C1844 1000PF 500 150 ZL DRC PROG SHT6 R1878 AAA 1K ZL_FDBK R1876 AAA 1 30 je 0 047 500 5 1 R1881 NOT LOADED ZR_DAC_PROG SHT1 6 159 ZR_FDBK 15V Figure 6 19 Control Assembly Schematic Diagram sheet 7 of 7 TP 501 o e 510 e e 0509690 e 509 5327 C51 e a W GY BR e o o W GY R 99999609 C500 524 csi4 9 502 Figure 6 20 Output Board Component Locations J527 L503 L501 TP 501 L500 0519 530 1600U C513 330 PF 1600U R594 100 5x 174W R508 05 3W R567 05 3W R509 05 3W R566 05 3 R513 10M 5x 174W R512 10M 5x 4 49 TP 502 z a MC13 LINES 2 amp 5 y R568
88. 7 C819 ANN uiiFt 21 5K RAMP GENERATOR 10PF s 80805 232 RAMP_TRIM PM R841 P0712 C822 SHT6 R835 6 NNV C821 237 3300PF 196K 4 epz12 0 047 dd 500 V R838 SQUE 21 5 bats 10 R848 237 SHTS RAMP RESET REG_REALTIME IPEAK_LIM a IPERK LIM SHT4 5 a NOTE DENOTES MODEL DEPENDENT URLUE SEE TABLE ON LAST PAGE Figure 6 19 Control Assembly Schematic Diagram sheet 1 of 7 ZERO VOLT SHUTDOWN ZERO_V SHTS e 50 VOLTAGE LEVELLING LOOP U_RMS_PROG R878 R869 C864 iw Y 1 104 esses 1 104 0 NOT 0 47 bee R872 SHT6 LOADED 500 NOT LORDED LORDED R877 4 64K U_RMS_TRIM R870 R1808 R1809 T5860 URB60 150 1M 1M 1M roe Teron 01854 15 5 5 0 047 N7 500 05 WFDC_MODU_ gt 995 U996 4 01814 Nyi 15 T Bns28 3 14 U_RMS_AC R871 D986 D870 N OUT 2 0 33 4 0715 11 i is E esu RMS OUT NC 171044 Besea R1823 C1855 z 348K C1815 E 02097 350 10 R874 s4 E cs 100K 150 DEN IN BIN 3101816 150 i SHT6 R1824 AAA RMSU UR MULTIPLIER 23 7K 150 VOLTAGE
89. 8 0698 3499 RES 40 2K 1 R1409 0757 0465 RES 100K 1 R400 401 406 407 0699 3196 RES 150 5 10W R403 404 0811 1914 RES 5K 5 10W PW R408 410 0811 1708 RES 7K 5 5W 5PWI R412 0811 1826 RES 05 10 3W R413 0812 0050 RES 3K 5 5W PW R414 425 449 0698 3279 RES 4 99K 1 R415 420 0698 8672 RES 243 4 196 R416 419 422 0757 0281 RES 2 74K 1 R417 418 421 469 407 8159 0005 RES ZERO OHMS 1417 1418 R423 0698 3637 RES 820 5 2W MO R424 432 493 0757 0199 RES 21 5K 1 R426 427 429 451 459 471 0698 3155 RES 4 64K 1 1401 1405 R428 463 0757 0446 RES 15K 1 125W R430 0698 8827 RES 1M 1 125W R431 0698 3159 RES 26 1K 1 R433 0698 8807 RES 39K 1 R434 435 0698 6369 RES 1M 1 25W R436 0698 6614 RES 7 5K 1 R437 0699 0721 RES 33K 1 R439 0698 6977 RES 30K 1 125 R440 444 450 458 1415 0757 0419 RES 681 1 125W R441 0757 0420 RES 750 1 125W R445 0698 6376 RES 200K 1 R446 0698 0085 RES 2 61K 1 R447 0698 6392 RES 22K 1 125W R448 0698 3700 RES 715 1 125W R452 0683 2255 RES 2 2M 5 25W R453 0698 0083 RES 1 96K 1 R454 0699 0486 RES 2K 1 1W F R456 468 470 499 1411 0698 3430 RES 21 5 1 R457 0698 3486 RES 232 1 125W R460 0698 8816 RES 2 15 1 R462 0757 0462 RES 75K 1 125W R464 0757 0274 RES 1 21K 1 R465 0757 0467 RES 121K 1 R467 0698 4479 RES 14K 1 125W R475 476 0699 0070 RES 3 16M 1 57 5 Replaceable Parts Table 5 7 DC RAIL Board continued R477 0757 0280 RES IK 1 125W R478 482 48
90. 8DC 3 R1754 R1755 10 C1728 100 A D D01 168DC C2 R1252 R1253 10 10 500 N 01282 ES 820 508 EAE R1750 R1751 50 16ADC 1 ANN ANN C1726 100PF A D_D0Z 1600 0 R1748 R1749 v Om e 100PF A D_D04 10 10 500 01284 100PF 0 05 SHT 10 100PF 5 820 006 Figure 6 17 DSP Assembly Schematic Diagram sheet 5 of 10 BxD 0 24 55 BXD 22 5 51 4 50 BXD 5 19 BXD e 18 BXD 7 12 12005 SUREF CLAMP 12DAC1A TD710 41 11 DACS amp CLAMPS 12005 R737 10K 248 USED RLL MOD FES 16ADC1 5 2 R798 LT1013 10K A11 12005 UDD UREFR U740 AD7837 DUAL 12 BIT DAC RFB A OUT A A GND DBO DB1 DB2 585 584 DBS DB6 087 RFB B NOT LOADED 3PHASE R738 TSUREF 18UDSP OUT B 2 B GND R2741 AMPA 755 WAVA 12005 C756 CLAMP 12DAC2A 0 1 BXD 0 24 10 1 25 S Bxpe2 22 BXD 0 7 BXD 3D 81 SHT 5 7 8 9 4 20 5 19 12DAC1_WR BXD 6D 18 SHT 5 BxDc25 17 12LDAC SHT 5 9 14
91. 9 4700 20 1040 0160 4355 CAP 10 1050 0160 4065 CAP 10 20 C1051 1052 0160 7606 IuF 275V C1060 1061 6813A B 6842A 0180 4641 CAP 2700 uF 200V C1062 1065 6811A B 0180 4528 CAP 1800 uF 200V C1062 1065 6812A B 6841A 0180 4641 CAP 2700 uF 200V C1066 1067 6813A B 6842A 0180 4641 CAP 2700 uF 200V D1060 1906 0389 FWB KPC3506 356 D1061 1901 1098 DIO IN4150 DS1080 1990 0517 LED VISIBLE E1047 6811A B 6812A B 6841A 5060 3586 ASSY WIRE KIT E1051 66000 60051 ASSY WIRE KIT F1020 6811A B 6812A B 6841A 2110 0910 FUSE 30AM 500V F1020 6813A B 6842A 2110 0849 FUSE 25AM 250V F1080 All 2110 0098 FUSE 20AM 250V HS1060 All 1205 0861 HEAT SINK J1035 All 1252 2672 CONN POST TP HDR J1042 1251 4781 CONN UTIL J1047 1251 5613 CONN SGL CONN J1049 0360 2421 BARRIER BLOCK K1040 1041 0490 1834 RLY 1C 12VDC L1020 6811A B 06811 80003 CHOKE INPUT L1020 6812A B 6841A 66000 80004 CHOKE INPUT L1060 1061 All 06012 80095 CHOKE OUTPUT Q1040 All 1855 0665 MOSFET RFP 2NDL R1010 All 0698 8827 RES 1M 1 125W R1040 1041 1045 1046 All 0811 3932 RESISTOR FIXED R1042 All 0698 4150 RES 115 1 25W R1043 RIO44 0698 0092 RES 2 61K 1 R1050 0698 3620 RES 100 5 2W MO R1051 0811 1666 RES 15 2W PW R1060 1061 1080 1081 0811 1866 RES 1 5W PW R1082 0757 0418 RES 619 1 125W 54 Replaceable Parts 5 Table 5 4 Parts List for Bias Board No C300 311 321 350 0160
92. 90 ss 25 E V lt Zo AAA e 2 2 cosa VV eg 4 4 8 4 4 1620 9061 1620 9061 1166 6690 9956 6690 02 lt 9 goza V 295 s lt 8 AAA e fog eyed DS 9289 0910 s 97 200 16 6690 IN A000 lt p 92 9 v 3400 Vo og 8 amp e8 Sezo ANA ooro 25 78 Sone T lt N 8024 8020 39 0299 g 8 P 02 88 1927 0910 S 9 8 100 0682 6690 e 98 9020 9 11 9881 1061 9620 AAA lt 160 1910 Lag 2068 HLX ASZ DS 960 FO 974 0910 ue E E WX 5 5 ASE 9020 5 i amp i 7 966 6690 966 6690 uod V WS ASP V APA e GEZ Lived e o lt lt 3 92e gg ne 8 8 r gt 98 ox 82x38 ASS clas 98 glo tefg Eeg o oR amp zOL e m 22 1v6 6690 Lv6 6690 Zaz v l v Al m0 e AAA 9 s J 5 5 s ui 1906 0291 1906 0291 796 6690 PIE v 001 1910 261 6690 39 2 roel d 958 02 Lv e 9 4 2029 6624 8009 a zis 1091 9281 aan aE 5 ac 8 28 9 je 9 gis Sg 5966 6690 cozn V AWN 42H DRIVE DRIVE Figure 6 7 FET Assembly Schematic Diagram 1047 K
93. A B 6813A B 6841A 6842A All All All All All All All All All All All See Rev C assembly replacement parts at end of table All All 6811A B 6812A B 6813A B 6841A 6842A 6811A B 6812A B 6813A B 6841A 6842A 0180 4649 0160 7197 0160 7640 0160 5422 0160 4803 0160 4795 0160 4814 0160 4825 0160 5422 0160 4824 0160 4809 0160 4789 0160 4819 0180 4136 0160 7934 0160 4918 0160 4835 0160 5422 1901 1098 5080 2698 1252 1052 1251 7616 0490 1405 0490 1961 06811 80004 5080 2331 06811 80005 5080 2332 5080 2330 5080 2368 9135 0481 5080 2461 5080 2351 5080 2346 5080 2363 5080 2350 1855 0665 0698 3547 0811 1832 0683 1065 0699 1060 CAP 2500 uf 300V CAP 0 33 uF 630 V C F 330 pF 1600V CAP 047 uF 20 CAP 68 pF 5 IOOV CAP 4 7 pF CAP 150 pF 596 CAP 560 uf 100V CAP 047 uF 20 CAP 680 pF CAP 390 pF 100V CAP 15 pF 596 100V CAP 2200 pF 596 CAP 10uf 20V 2 uF 300 vac 2 CAP 022 uf 1096 CAP 1 uF 10 50V CAP 0 047 uF 2096 DIO IN4150 CABLE DIN CONN MALE CONN UTIL MT LK RELAY 2C 12 VDC RELAY 1C 12VDC CHOKE CHOKE CHOKE CHOKE INDUCTOR INDUCTOR RESON INDUCTOR CM INDUCTOR CABLE CABLE CABLE CABLE MOSFET RFP 2NDL RES 15 5W CC RES 5 1 3W PW RES 5 25W RES 05 1 3W 59 5 Replaceable Parts Table 5 8 Output Board continued R510 6811A B 06811 80006 RES S
94. A R7I1R712 c REOR 246 0776 RADA L u706 Ne e 5 0754 e 0755 REO RIS R708 p202 s UZ36 Meu D70 0757 E gt 8 5 0773 0711 JP 2 BP 5 t e N S SEN Els ANN U287 U720 RE Ul b N S 7 m eis U 86 p lo N ma 0513 py EJE RE U285 o N I T RAAB AN eu SI lo N N S T REE gt b y UN m S c ao 0284 on e nj x T 1 SO WE 0283 n BR gt RR7B4 a bY U283 q D712 S U238 T fo B IY 0770 R2753 nie 0282 5 nal bes Q o gt om e 138 D211 U216 0714 St NI Ny ae 3 DWN 0781 lt imin N e e a J E a Xe U224 R751 SONN 9 Ce b ALN U780 s D dad g SiS c 0741 Q 21 O NI Sj SE N NI NI 0755 A NI M Bm 5 RIS B 1724 N la N N U752 5 E SOOS Qu E s oo 0255 N aap E U251 5 0710 c 0740 E by u u 0750 a S Figure 6 16 DSP Assembly Component Locations sheet 1 of 2 J721 NI B 1 R1799 R1798 R1760 RH251 Q OY C740 c uge 4 R1220 R1216 R1217 5148 C R2757 I RA ial R2755 1 1 8 C10 8C 26 R2756 I R1PSBRIPSPR1IPSe FH 253 Oo R1H2BR iP3l5 RIP TB REZ 9 N C1ZHlecilP zCc1imFuo cime 2 R1Pf26RI7H7R 1
95. A10 CONTROL OR A8 DSP BOARD FAULT YES Y THE CV ERROR AMPLIFIER PWM COMPARATOR PWM DRIVER RAMP GENERATOR AND HV LOW RAIL DETECT CIRCUIT CAN BE CHECKED BY APPLYING 0V OR 10V TO RAIL_VMON CHECK RAMP GENERATOR AT U475 1 AND U475 7 SEE FIGURES 4 5C AND 4 5D OV applied 10V applied 15V 15V CV ERROR AMP U447 7 5V 0 PWM COMPARATOR U462 7 5V 5V RAIL_OV_INH U463 3 LOW WHEN RAIL OVERVOLTAGE IS TRUE 0 RAIL INH ISO U463 4 HIGH INHIBITS PWM DRIVER PULSE RAMP PULSE U463 14 SEE FIGURE 4 5B PULSE 1 2 EXT CLK ISO U463 15 SEE FIGURE 4 5A PULSE PWM DRIVER disconnected U491 8 9 SEE FIGURE 4 5E PULSE PWM DRIVER normal U491 8 9 SEE FIGURE 4 5F RAIL 0424 14 TOGGLES AT APPROX 10 6V RAIL RAIL LOW WARN U424 14 TOGGLES AT APPROX 9 3V 9 RAIL VMON X mE U424 1 TOGGLES AT APPROX 8 4V RAIL VMON LRFDEL U433 1 Figure 4 4 DC Rail Assembly Troubleshooting 29 2 00 V div 5 00 us div EXT CLK ISO U436 6 R459 TO TP404 2 00 V div 83 kHz EXTERNAL CLOCK A 5 00 us div RAMP GENERATOR U475 1 R487 TO TP404 PWM DRIVER DISCONNECTED FROM AC FET PULL J1042 AC INPUT SHORT RAIL LO FAULT TO W 5 00 V div RAMP GENERATOR NO 2 C 0 00 us div PWM DRIVER
96. C from the A3 ACFET assembly to input rectifiers D400 thru D407 on the A5 DC Rail board Chassis mounted rail filter 5080 2329 and capacitors C500 to C503 and C508 to C509 located on the A9 Output Filter board convert the 42 KHz AC to a 503 volt DC rail for use by the A7 Inverter assembly It also contains U423 bias voltage detector and high low 503 volt rail voltage detection circuit There is a red LED on the right side of the 5 DC Rail assembly to warn when high voltages are present this LED can be seen from the right side of the AC Source without removing any covers This assembly is component level repairable but extreme caution must be used when troubleshooting as 1100 volts peak 503VDC is present The A5 DC Rail assembly is common to all models 18 Principles of Operation 3 A6 Bias Assembly The A6 Bias assembly receives the AC input mains voltage via connector J1035 from the A4AC Input assembly The bias transformer primaries for models 6811A B 6812A B or 6841A can be configured for either 100 120 200 or 230 volt nominal input and models 6813A B and 6842A can only be configured for 200 or 230 volt nominal inputs The input voltage range is configured by moving jumpers on J353 A J353 jumper configuration diagram is located on the bias assembly next to J353 Regulator U300 supplies 15 volts to the AC input relays and bias to the ACFET assembly Regulators U311 and U3121 supply 5 volts to the GPIB and front panel assemblies Opto c
97. Eo 8 o Lo 2go E E esss oo 5 t t 5 8288 S ggd y E Gaol bao O m m 5 O ofS 80816 08a O 0 of Sa 96812 5 messy ITJ postal H H E uses 58 1869m B g Seco civ rho 68604 E UIIS66 m zd gr E d re eigenen a 5868 cv69tr T gt 886230 dere B TA Hy 9869m o mse un 6 6 001969 f mises 9862 066 EP mezex cog s z TER O croalle O LIISZ69 s O c gty eco e9813 1696 ossa D RA Bu Merga M troom py E 019560 ocsam j 9 mere o eeersmn mest ha eects Sao 1800 I zz83 NA 481 317 UL TI 0462 ZOSTA O ZAB TMTTI cega A ES P UI Orea E 988IBI rio E 01928713 oi 6180 5845 00818799 Sp um2g udis 146560 szea mrsa Tad EM Sees Hum o e E 01008179 o 9981349818 a 78 imeteta S epeo 0081 pombomsssty ered um oa mises NS Tres Mo nen saa 6 tegsam sere gmmeses o cceall egg 005969 6080m Oz 0 85 oe mg Es 665 5 2089 968 o gg lLlereszseasun om un 9
98. HUNT W PIN R510 6812A B 6813A B 5080 2383 RES SHUNT W PIN 6841A 6842A R511 543 549 All 0699 0222 RES 10 5K 1 R520 R523 All 0698 3152 RES 3 48K 1 R521 522 All 0757 0414 RES 432 1 125W R529 R530 All 0698 6414 RES IK 1 IW F R531 536 539 542 All 0699 1743 RES 345K 1 R532 533 All 0699 1741 RES 5 657K 1 R535 All 0699 4307 RESISTOR FIXED R537 544 546 595 596 0757 0401 RES 100 1 125W R547 6811A B 0757 1100 RES 600 196 125w R547 6812A B 6813A B 0698 4463 RES 845 1 125W 6841A 6842A R500 501 592 593 All 0698 3260 RES 464K 1 R550 555 558 559 All 0698 8826 RES 825K 1 R551 554 All 0757 0279 RES 3 16K 1 R552 553 All 0698 3156 RES 14 7K 1 R560 All 0698 OG64 RES 9 31K 1 R568 0698 3609 22 5 2 571 572 0699 3420 RES 56K 5 5W R573 574 0698 3279 RES 4 99K 1 125W 575 0698 4446 RES 267 1 125W R569 0757 0407 RES 200 1 125W R578 0698 3430 RES 21 5 1 R579 580 0698 8812 RES 1 1 125W F R581 0683 0475 RES 4 7 5 25W R584 591 0811 1810 RES 3 6K 5 3W R594 0683 1015 RES 100 5 25W RT501 0837 0397 THERMISTOR TB552 0360 2578 BARRIER BLOCK TP500 1250 1918 TEST JACK U500 1826 1081 IC LFA11A U502 506 All 1826 1135 IC OP 27 U503 1826 0412 IC LM393N W501 7175 0057 WIRE 2 NOTE The following parts are used only in Output Filter assemblies Revision and below K500 6812A B 6813A B 5063 3494 RELAY ASSEMBLY 6841A 6842A L510 511 6812A B 681
99. K 2 5K WE_TRIM 0 15 R800 9 1 150 2 50 500 511K R1834 C1802 WFDC_OFFSET R801 e 0 047 v2 10K 1x 16 10 WFAC_PROG R1890 R802 R803 0802 ANN ANN 5 2 SHT6 17104 17104 1 0 27 2 BAS28 50 C1852 3 n 12 le Tre 4 rese 6B00PF 5049 is C1808 0047 EI 13 5 0 047 lL p V U800 D6444DY LEUELING MODE C802 URB00 EL FDBK AAA 4 3 48 4700PF n 6 20 14_ 15 C826 R817 T RB0S 4 12 Le Tel 4 3 pF 1 96K 4700 I 0887 D SHT 13 5 2000 15U 4700PF ODE Lr 0858 UB00 4200 R818 2R_FDBK R806 R839 10K ii R1811 AV U800 D6444DY 455 laa Z_MODE EE SHT6 e 12 4 voog as U_MON SHT2 6 D6444DY 16 R812 10K 7 pw A Dg04 Z 5 BAS28 1 1 AC COUPLING nN L MODE U800 DG444DY 0 047 500 R1889 URO46 A84 AN DpL 1 21 X RC MODE SHT6 e INU_INHIBIT SHTS IPEAK_CNTL SHT4 TPEAK_CNTL RAMP_TRIM CONTROL MODE COMPARATOR 150 A C814 550 1 96K IPK FDBK SHT4 50 PWM COMPARATOR R1868 68 1 C1839 0 047 PWM_CNTL SHTS 10 4182528 R853 C810 R852 21 5 AK R826 Nd AAA 26 1 7 R829 R828 FEM I L MON AAA AAA ep 5 4 4 64K 562 R830 AAA 6 49K R82
100. Lv 9 I 2029 g me M EE 2 2 5 e og 8 N eR 28 Ble 9 55 88 Ot ISo og aN of 922 0910 WE 7160 1910 HX 8120 960 270 z 80 1 gS 65 S 1 1061 feed AAA 1001 1910 5 16 0910 NZ 100 Jog 24 soca Ko 7 8 i 2 898 92880910 gezo JS 16 6690 A000 0220 ag 2 V 91 60 3001 lt 9 Jos 8 15 0910 AA NE q J o5 SIS 92 9 8 100 is 9 29 ec 8 8275 e 6120 82 lt gt 2629 ZI 8 jes 8 8 e 1906 0291 lt 1906 0291 e d e e e x 5288 9 88 90 Ge wo N N E lt 8 8 lt 8 8 m D VS g 5 um Sy m MJD45H11 X MJD45H11 a lo 1853 0655 wl 1853 0655 TSN 2686690 o 888 Lee 5 V NISSS 5 AAA Ree 9 Rex 525 9 525 2212 0416 8 2212 0116 8b 6 o HN0Z ETAT Weve IAS 706 6690 wo 6021 uei IRGP20B60PD IRGP20B60PD ANN 9 1854 1784 1854 1784 9 96 6690 8699 0910 8 5867 6690 8699 0910 x 02 08 MOE dd AML 02 08 MOE dd AML gt lt S 02 390022 SL 9006 340022 Bs 1 acle WAY 1 Boss 0668 129 OLST vec To E Qc ca 1122 0910 Etes s 8 34002 E oezo a 0866 6690 1466 6690 AF 572 AAA 4 011 7 z 9220 0112 222 8 6568
101. NNECT FOLLOWING TEST EQUIPMENT 1 CONNECT FUNCTION GENERATOR 83 KHZ SQUARE WAVE TO U602 3 amp U602 4 2 SHORT U602 5 TO U602 7 OPTO MUST BE LOW FOR U608 TO GENERATE TURN ON PULSES B CONNECT OSCILLOSCOPE TO U608 2 AND INCREASE FUNCTION GENERATOR GAIN UNTIL 83KHZ SQUARE WAVE IS OBSERVED AT U608 2 SEE FIG 4 8 G NOTE FUNCTION GENERATOR IS CONNECTED DIRECTLY TO U602 OPTO DIODE BE SURE FUNCTION GENERATOR HAS INTERNAL IMPEDANCE OF 50 OHMS C CHECK GATE DRIVE TO ALL POWER FETS Q601 THRU Q608 AND Q611 THR Q618 SEE FIG 4 8H D CHECK WAVEFORM AT H BRIDGWE OUTPUT E626 1 TO E626 2 AND E627 1 TO E627 2 SEE FIG 4 8H E IF ALL WAVEFORMS ARE CORRECT REINSTALL A7 INVERTER ASSEMBLY CONNECT ALL CABLES EXCEPT 503 VDC RAIL CONNECT EXTERNAL DC SOURCE TO A7J625 SEE A7 SLOW START PRODEDURE F CHECK CURRENT WAVEFORM FIG 4 8J PROGRAM AND CHECK OUTPUT VOLTAGE AND CURRENT TO DETERMINE IF A7 INVERTER ASSEMBLY IS OPERATING PROPERLY Figure 4 7 Inverter Assembly Troubleshooting sheet 2 of 2 34 A10U1801 25 v PWM DRIVE 1 00 V div 5 09 us div 5 00 V div 0 00 V A 2 00 us div SCOPE DC COUPLED GATE TO RAIL ov 5 00 V div 0 00 V 2 00 us div SCOPE DC COUPLED DRAIN TO RAIL ov Troubleshooting 4
102. NTER OUTPUT ON VOLTAGE OFFSET 425 ENTER SHIFT OUTPUT RST ENTER J822 31 3 8 Vdc J822 23 1 0 Vac J822 15 4 0 Vdc 1522 13 6 0 Vdc J822 9 2 5 Vdc 7822 5 43 0 Vac J822 1 0 Vac J822 32 0 8 Vdc 1822 22 5 0 Vdc J822 20 15 0 Vdc J822 18 15 0 Vdc J822 16 1 5 Vdc 1822 12 5 0 Vdc J822 10 6 0 Vdc J822 8 5 0 J822 6 46 0 Vdc 1822 9 4 6 Vde for 425 Vout J822 9 near 0 V for 425 Vout With the cable to J625 connected so that the ac source can output voltage and current 1 2 To check J822 offset voltages enter the following commands from the front panel SHIFT OUTPUT OUTP COUP DC ENTER 3 VOLTAGE ALC DET RMS ENTER VOLTAGE VOLT 0 ENTER Enter the following commands from the front panel VOLTAGE VOLT 300 ENTER OUTPUT ON SHIFT OUTPUT RST ENTER J822 1 3 Vac J822 12 3 0 Vdc 7822 12 near 0 V With a short across the output terminals SHIFT CURRENT CURR LEV 4 ENTER SHIFT OUTPUT RST ENTER Remove the short from across the output terminals 4 Enter the following commands from the front panel VOLTAGE VOLT 5 ENTER OUTPUT ON 38 J822 3 0 75 Vac J822 3 0 23 Vac Troubleshooting 4 Table 4 8 Voltage Measurements at J822 viewed from circuit side of A10 control board range signal pin pn signal rang 5 to 0 02V Z inductance program 0 1 to 2 5V 20 to 1000 uH 0 8 to 4 9V normally 3 8V HS MON 31 32 fan monitor 0 5 to 2V 0 10096 fan speed normally 0 7 to 1V
103. NTROL BOARD TROUBLESHOOTING IF FAULT IS VOLTAGE OR CURRENT READBACK CHECK OUTPUT AND CONTROL BOARDS IF FAULT IS TRIG IN TRIG OUT RI OR DFI GO TO A11 TRIGGER BOARD TROUBLESHOOTING IF FAULT IS NO OUTPUT CHECK A7 INVERTER BOARD Figure 4 1 Overall Troubleshooting Procedures sheet 2 of 2 25 4 Troubleshooting A1 Front Panel Assembly Troubleshooting TURN UNIT ON iF DISPLAY DOES NOT LIGHT PRESS SHIFT KEY COMMUNICATION FAULT MAY BE WITH A8 DSP OR A11 TRIGGER BOARDS SEE A8 DSP ASSEMBLY TROUBLESHOOTING AND A11 TRIGGER BOARD TROUBLESHOOTING TURN UNIT OFF REMOVE FRONT PANEL BOARD REMOVE FRONT FRAME TRIM STRIPS ONE EACH SIDE REMOVE 2 SCREWS EACH SIDE OF FRONT FRAME TORX 10 REMOVE KNOBS FROM VOLTAGE FREQUENCY CONTROL 0 050 HEX DRIVER MOVE FRONT FRAME AWAY FROM CHASSIS FRAME WILL ONLY MOVE FEW INCHES REACH BETWEEN FRAME AND CHASSIS AND DISCONNECT CABLE FROM FRONT PANEL PC BOARD REMOVE SCREW TORX 10 HOLDING PC BOARD LIFT PC BOARD FINGER AND SLIDE BOARD TOWARD ON OFF SWITCH TO REMOVE BOARD FROM FRAME USE LONG CABLE 5080 2381 FROM SERVICE KIT TO CONNECT PC BOARD TO A4 BIAS SUPPLY TURN UNIT ON CHECK F1 SEE FIGURE 6 2 CHECK 5V FROM A4 BIAS BOARD SEE FIGURE 4 6 AND FIGURE 8 12 REPLACE FRONT PANEL PC BOARD CHECK COMMUNICATION FROM A8 A11 BOARDS SEE A8 A11 BOARD TROUBLESHOOTING CHECK PULSES 11 0150 1 0151 5 0153 3 U 154 1 SEE FIGURE 4 10 USE GPIB CONTROLLER TO
104. R151 R162 un im R170 C157 R157 C174 R164 IU R163 C170 C171 ooooooot J00000000 Figure 6 22 Trigger Board Component Locations SECONDARY ISOLATION I ES bo C150 de SEC 5 1000 R150 HPIB 500 10K R156 C173 Bj R162 4 10K R169 1 x 10K DRXD 1 10H d 0 017 1 M ussi R167 1 IT AA 50 I RCT14 464 1x sec 1 10 v 1 V I SMODE 50 AD C174 50 1000PF R157 uo RIL 500 500 ARXD 4 64 0 042 15 6 R187 T J117 U16314 0163 14 17104 DTXD 14 U165 R170 R171 R172 z TRIG e 8 gle 13 12 AAA ANA I RCT14 RCT14 RCT14 100 1 100 5x 100 5x gt gt TOUT1 1 10W 1 18 50 HPIB R152 TM TRIG SMODE TINe DS TD158 1 le 412 R198 BIAS 50 SEC R192 10K 1 0164 14 1710W gt 2 oo ATXD RCT14 gt
105. READBACK SYSTEM ERROR REGISTER IF FRONT PANEL ERROR IS RETURNED 201 220 224 SUBSTITUTE KNOWN GOOD FRONT PANEL BOARD OR REPLACE FRONT PANEL BOARD Figure 4 2 Front Panel Assembly Troubleshooting A2 GPIB RS 232 Board Troubleshooting WARNING Disable the 500 Vdc rail by disconnecting cable 5080 2365 from A5 J400 Then connect a jumper from A5 J445 4 to A5 J445 10 This disables the RAIL LOW FAULT signal Also place an insulator over the A5 DC Rail board Table 4 4 GPIB RS232 Board Troubleshooting Check for 5 Vdc at L100 see Figure 6 5 2 09 Wa SUO RUN for location Check for clock waveform at Y 100 Connect the unit to a GPIB or RS232 CRYSTAL controller to check the GPIB RS232 transceivers Note that GPIB and RS232 use separate communication transceivers 26 Troubleshooting 4 A3 FET Board Troubleshooting Because test points on the FET board are not accessible when the board is installed troubleshooting must be performed with the board removed from the power supply Troubleshooting procedures are provided with both power removed and power applied The location of different test points are shown by encircled numbers on the A3 FET Board schematic and component location diagrams NOTE Earlier ac source models used through hole FET assemblies Updated surface mount FET assemblies refer to the parts list are the recommended replacement part for all previous
106. SSED OR IMPLIED KEYSIGHT TECHNOLOGIES SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE EXCLUSIVE REMEDIES THE REMEDIES PROVIDED HEREIN ARE THE CUSTOMER S SOLE AND EXCLUSIVE REMEDIES KEYSIGHT TECHNOLOGIES SHALL NOT BE LIABLE FOR ANY DIRECT INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES WHETHER BASED ON CONTRACT TORT OR ANY OTHER LEGAL THEORY ASSISTANCE The above statements apply only to the standard product warranty Warranty options extended support contacts product maintenance agreements and customer assistance agreements are also available Contact your nearest Keysight Technologies Sales and Service office for further information on Keysight Technologies full line of Support Programs Safety Summary GENERAL This is a Safety Class 1 instrument provided with a terminal for connection to protective earth ground OPERATION BEFORE APPLYING POWER Verify that the product is set to match the available line voltage the correct line fuse is installed and all safety precautions see below are taken Also note the instrument s external markings described under Safety Symbols WARNING e SHOCK HAZARD EQUIPMENT DAMAGE PERSONAL INJURY This product is a high energy instrument which means that it converts large amounts of energy during normal operation This can result in catastrophic component damage rapid violent component disassembly if certain components fai
107. T CU LEUELING SHT6 CL RMS CL PERK 500 UA_LIMIT om SHT4 UDD CU_REALTIME SHT6 U983 ourl 5U ENBL R1859 C1821 GND 50 STATUS GAL 21 5 02047 R1860 50 21 5 R1819 EXT CLK SYNC R1904 e295 RAMP_RESET 0 047 SHT1 0 047 15 140986 5 50 Ds CL LEUEL IPEAK_LIM IPERK LIM JCT_LIM REG_REALTIME LEV_FAULT R1861 C901 ACT14 50 aM les R1810 V FREQUENCY SELECT GRL PWM RELAY GAL INV_OFF d D SHT3 0989 INUERTER LORDED ROO CONNECTO J828 464 0990 DIGITAL EXPANDER 61820 PROGRAMMABLE NOT R1903 1 16 Fe LORDED T5U 4 AAA I R998 10 16 0 047 I8 FO R1817 12 18 Fo AWN am 500 15119 ANN 464 0993 0 147 erase 1 Em 17 nie Z20PF SENSE REL fo 500 SUB R1 Bal aie uk 113 50 SUB R2 3 GRL20U8Q IPCL f CC Oa ae I2 ae 50 SUB_D 13 5 14 16 a4 AC_MODE mE
108. V at U201 10 TP 29 and drive 2 waveform at U201 12 TP 30 32 U202 1 TP 33 and U202 7 TP 34 Pulses should be present on both sides of inductors L201 204 and L213 216 as follows Check the pulses on the driver transistor side Q251 Q254 of See Figure 4 3D each inductor Check the pulses on the FET regulator side Q201 Q204 See Figure 4 3E Q211 Q222 Q233 and Q244 of each inductor If the waveforms do not have the fast step as shown in Figure 4 3 then the associated FET gate input has an open circuit Measure the VREF voltage at U204 4 TP 35 approx 1 7 V 17 Check the peak current limit by connecting a 68 resistor pulses turned off from 5 V U201 9 to U204 5 27 4 Troubleshooting 5V DIV 10 uS DIV A J200 TEST SIGNAL FROM SIGNAL GENERATOR 5V DIV 10 uS DIV U201 202 PINS 1 7 DRIVE SIGNAL 5V DIV 10 uS DIV E L201 L208 L213 L216 REGULATOR SIDE 28 5V DIV 10 uS DIV B U201 U202 PINS 10 12 DRIVE SIGNAL sm 10 uS DIV D L201 L204 L213 216 DRIVE SIDE Troubleshooting 4 A5 DC Rail Assembly Troubleshooting WARNING Thi
109. V A AC Source Analyzers whereas the 6841A and 6842A are 750V A and 1750V A power sources are used as Harmonic Flicker Test Systems The 6811A B 6812A B and 6841A can operate from 120 220 or 240 volt AC input main while the 6813A B and 6842A only operate from 220 240 volt AC input mains deliver regulated AC voltage and or current from 45 to 1000 hertz They can operate below 45 hertz to DC at derated output power See Users Guide for operation below 45 hertz They can generate sine square clipped sine or arbitrary waveforms The output waveform can be controlled from the front panel keypad or computer via GPIB or RS 232 The output characteristics or measurements voltage current frequency power factor etc can be readback via the front panel GPIB or RS 232 A1 Front Panel Assembly The A1 Intelligent Front Panel assembly contains a circuit board a vacuum florescent display assembly keypad and rotary pulse generators RPG The circuit board contains digital logic circuits including a CPU ROM and RAM The front panel CPU decodes operator keystrokes and transmits the information to the A8 DSP assembly The front panel receives information from the A8 DSP assembly to update the display The front panel assembly is a surface mount SMT assembly and is not component level repairable The A1 front panel assembly is common to all models 17 3 Principles of Operation A2 GPIB RS 232 Interface Assembly The A2 GPIB RS 232
110. are reserved No part of this document may be photocopied reproduced or translated into another language without the prior written consent of Keysight Technologies The information contained in this document is subject to change without notice Copyright 1995 1997 2000 2014 Keysight Technologies Printing History First Edition October 1995 Second Edition July 1997 Third Edition September 2000 Fourth Edition December 2014 Table of Contents Warranty Information Safety Summary Notice Printing History Table of Contents INTRODUCTION Organization Safety Considerations Related Documents Revisions Instrument Identification Manual Revisions Firmware Revisions Electrostatic Discharge 2 PERFORMANCE TESTS Introduction Test Equipment Required Current Monitoring Resistor Constant Voltage Tests Procedures 3 PRINCIPLES OF OPERATION Introduction General Description Front Panel Assembly A2 GPIB RS 232 Interface Assembly A3 FET Assembly A4 AC Input Assembly A5 DC Rail Asembly A6 Bias Assembly A7 Inverter Assembly A8 Digital Signal Processing DSP Assembly A9 Output Filter Assembly A10 Control Assembly A11 Trigger BNC Assembly N WARUN oo oo 66 NN 4 TROUBLESHOOTING Introduction Test Equipment Required Troubleshooting Hints Power on Self test Failures Run Time Errors Overall Troubleshooting Flowchart Front Panel Assembly T
111. bly Schematic Diagram 3 sheets Figure 6 12 Bias Assembly Component Locations Figure 6 13 Bias Assembly Schematic Diagram 2 sheets Figure 6 14 Inverter Assembly Component Locations Figure 6 15 Inverter Assembly Schematic Diagram 2 sheets Figure 6 16 DSP Assembly Component Locations 2 sheets Figure 6 17 DSP Assembly Schematic Diagram 10 sheets Figure 6 18 Control Board Component Locations 2 sheets Figure 6 19 Control Assembly Schematic Diagram 7 sheets Figure 6 20 Output Board Component Locations Figure 6 21 Output Assembly Schematic Diagram 4 sheets Figure 6 22 Trigger Board Component Locations Figure 6 23 Trigger Assembly Schematic Diagram Figure 6 24 Thermistor Assembly Component Locations Figure 6 25 Thermistor Assembly Schematic Diagram Figure 6 26 Transformer Assembly Component Locations Figure 6 27 Thermistor Assembly Schematic Diagram 64 Assembly 5080 2349 A2 GPIB Mama 115 Assembly 50802381 4112 A11 Trigger Assembly 66000 6005 5188 4204 E1051 J1042 A8 DSP Assembly A4 AC Input Assembly 5081 4971 A7 Inverter Thermistor Assembly E1355 Red Black Power XFMR Assembly 5080 2698 5080 2367 5080 2365 J838 J646 AS Output Filter Assembly 41232 5188 4209 5080 2354 Line Choke 5080 2328 men A10 Control Assembly
112. bly perform the above steps in reverse order A4 AC Input Board Removal and Replacement a b C rh Remove the outer and inner top covers as described earlier Remove the A2 GPB board as described earlier Remove the A3 ACFET assembly as described earlier Use 10mm Hex driver to disconnect ground wire connected to rear panel located under A2 GPIB board Remove red and black wires going to line choke Remove cable between J1035 and J335 on A6 Bias board Using a T15 Torx screwdriver remove 3 screws holding A4 AC Input board to chassis Slide A4 AC Input board toward the front of the unit and lift from chassis To reinstall the A4 AC Input board perform the above steps in reverse order A5 DC Rail Board Removal and Replacement a b 48 Remove the outer and inner top covers as described earlier Disconnect cables at J436 J400 J444 and J445 Using T15 Torx screwdriver remove 5 screws holding A5 DC rail board to chassis Disconnect cable to J1232 or J1233 on power transformer board Mark which connector the cable was removed from Disconnect wires from rail choke 5080 2329 at A5 DC rail board The A5 DC rail board is labeled with wire color code To reinstall the A5 DC rail board perform the above steps in reverse order taking care to reconnect the rail choke wires to the correct terminals and the power transformer cable to the correct receptacle Troubleshooting 4 A6 Bias Board Removal and Re
113. c Flicker Test Systems All models will hereafter be referred to as the ac source This manual is organized as follows Chapter 1 Introduction Chapter 2 Performance tests Chapter 3 Principles of operation on a block diagram level Chapter 4 Troubleshooting Chapter 5 Replaceable parts Chapter 6 Diagrams Safety Considerations This ac power source is a Safety Class I instrument which means it has a protective earth terminal This terminal must be connected to earth ground through a power source equipped with a 4 wire 3 wire for Keysight 6811A B ground receptacle Refer to the Safety Summary page at the beginning of this manual for general safety information Before operation or repair check the ac source and review this manual for safety warnings and instructions Safety warnings for specific procedures are located at appropriate places in the manual WARNING SHOCK HAZARD EQUIPMENT DAMAGE PERSONAL INJURY Hazardous voltages exist within the ac power source chassis at the output terminals and at the analog programming terminals Only qualified personnel who have been trained in working with high voltage power equipment are to service this unit This product is a high energy instrument which means that it converts large amounts of energy during normal operation This can result in catastrophic component damage rapid violent component disassembly if certain components fail during operation When covers are removed always wear a fac
114. ce User s Guide General Schematic Notes Notall components or values shown on the schematic apply to all ac source models The parts lists in Chapter 5 contains information about components that are model specific e All resistors in ohms 1 1 8 W unless otherwise specified All capacitors are in microfarads unless otherwise specified e Signal lines that are terminated by flags continue on other sheets and may go to other locations on the same sheet For example CVPROG SH 2 8C on sheet 2 location 8C the same location resistors are in ohms 1 1 8 W unless otherwise specified e resistors are in ohms 1 1 8 W unless otherwise specified Unless otherwise noted bias connections to integrated circuit packages are as follows Common 5V 14 pin packages pin 7 pin 14 16 pin packages pin 8 pin 16 20 pin packages pin 10 pin 20 63 6 Diagrams List of Figures Figure 6 1 Figure 6 2 Figure 6 3 Figure 6 4 Figure 6 5 Figure 6 6 Figure 6 7 Figure 6 8 Figure 6 9 Interconnect Diagram Front Panel Assembly Component Locations Front Panel Assembly Schematic Diagram 2 sheets GPIB Assembly Component Locations GPIB Assembly Schematic Diagram FET Assembly Component Locations FET Assembly Schematic Diagram AC Input Assembly Component Locations AC Input Assembly Schematic Diagram Figure 6 10 DC Rail Diode Assembly Component Locations 2 sheets Figure 6 11 DC Rail Diode Assem
115. cluded This information is subject to change without notice Keysight Technologies 1995 1997 2000 2014 Edition 4 December 2014 KEYSIGHT TECHNOLOGIES 5962 0859 www keysight com
116. cluded with this manual If the serial number of your unit is lower than those shown on the title page your unit was made before the publication of this manual and can be different from that described here The previous versions of this manual print date October 1995 or July 1997 applies to these units Firmware Revisions You can obtain the firmware revision number by either reading the integrated circuit label or query the ac source using the GPIB IDN query command see Chapter 4 Troubleshooting Electrostatic Discharge CAUTION The ac source has components that can be damaged by ESD electrostatic discharge Failure to observe standard antistatic practices can result in serious degradation of performance even when an actual failure does not occur When working on the ac source observe all standard antistatic work practices These include but are not limited to e Working at a static free station such as a table covered with static dissipative laminate or with a conductive table mat Keysight P N 9300 0797 or equivalent e Using a conductive wrist strap such as Keysight P N 9300 0969 or 9300 0970 Grounding all metal equipment at the station to a single common ground Connecting low impedance test equipment to static sensitive components only when those components have power applied to them e Removing power from the ac source before removing or installing printed circuit boards Performance Tests Introdu
117. ction This chapter provides test procedures for checking the operation of a model Keysight 6811 AB 6812A B 6813A B AC Power Source Analyzer and Keysight 6841A 6842A Harmonic Flicker Test System The required test equipment is specified and sample performance test record sheets are included Instructions are given for performing the tests using the front panel keypad Test Equipment Required Table 2 1 lists the equipment required to perform the performance tests in this chapter A test record sheet with specification limits and measurement uncertainties when test using the recommended test equipment may be found at the back of this section WARNING SHOCK HAZARD These tests should only be performed by qualified personnel During the performance of these tests hazardous voltages may be present at the output of the unit Table 2 1 Test Equipment Required for Verification and Performance Tests Recommended Model Digital Voltmeter Resolution 10 nV 1V Keysight 3458A Readout 8 1 2 digits Accuracy 20 ppm 0 01 ohms 200 ppm 10 Watts Guildline 7320 15 Audio Analyzer Input Voltage 50mV TO 300V Keysight 8903A Distortion Accuracy 1db 20Hz to 20khz Residual Distortion Noise 80db 0 0196 20Hz to 20kHz Counter o 1 KHZ lt 0 001 5316B Ratio Transformer Transformer 30 1 lt 0 1 ratio lt 50 ppm Variable Voltage Power 1 Phase 3 4KVA Powerstat Transformer Range 104
118. e 4 11 See Appendix B in User s Guide for calibration procedure Programming error see applicable programming command in Programming Guide 23 4 Troubleshooting Overall Troubleshooting Flowchart Figure 4 1 gives the overall procedures to isolate a fault to a circuit board or particular circuit See Figure 6 1 for the location of the circuit boards START TROUBLESHOOTING PROCEDURES TURN UNIT OFF DISCONNECT LOAD DO NOT REMOVE OUTER COVER TORX T25 AND INNER COVER TORX T15 T20 UNLESS REQUIRED BY THE PROCEDURE WEAR A FACE SHIELD AND EAR PROTECTION WHENEVER THE COVERS ARE REMOVED TURN UNIT ON CHECK FOR ANY INDICATION AC POWER ON TW uS SEE FIGURES 6 8 AND 6 9 CHECK FUSE A4F1020 LINE SWITCH A4 E1048 CONNECTIONS TO L1050 LINE CHOKE BEEN ASSY NO CHECK A4TP1050 2 FOR 150VDC RAIL FOR 300VDC SEE FIGURES 6 12 amp 6 13 CHECK FUSE A6 F300 amp A6 F301 LZ 15Vpri amp 12Vpri FROM A6 BIAS ASSY TO A4 ACINPUT ASSY YES n N CHECK FUSE A6F301 IS DISPLAY ON LINE VOLTAGE SWITCH A4J353 SETTING SEE A6 BIAS BOARD TROUBLESHOOTING YES PRESS SHIFT KEY ON FRONT PANEL PG SHIFT ANNUNIGIATOR TARDAR LIGHTS eid CHECK DRDX DTXD SIGNALS A11 TRIGGER ASSY U150 5 TO D COM J7462 2 ON A8 DSP ASSY U151 1 TO D COM J7462 2 ON A8 DSP ASSY U164 5 TO D COM J7462 2 ON A8 DSP ASSY 0163 6 TO
119. e for connecting the load AGILENT 3458A 6811A B 6812A B 6813A B 6841A 6842A SENSE aly SISISISIS IW V AGILENT 3458A RL 20 ohms for all rms Current Tests RL 250 ohms for 6811A B Load Test RL 120 ohms for 6812A B 6841A Load Test RL 51 ohms for 6813A B 6842A Load Test Rs Current Monitor resistor 0 01 ohms Switch is for convience not required Figure 2 1 Test Setup 10 Performance Tests 2 Procedures In the following procedures the term UUT means unit under test which can be either the 6811A B 6812A B 6813A B 6841A or 6842A AC Source Table 2 2 Voltage Programming and Readback Accuracy Action Normal Result This procedure verifies that the voltage programming GPIB readback and Front Panel display functions are within specifications Turn off the UUT and connect DVM and Ratio Transformer as shown in Test Setup Figure 2 1 Switch S lis open Turn on the UUT Recall factory defaults with RST then annunciator program output to VOLT 300 FREQ 45 SHAPE SIN Output current near zero 3 Record voltage readings at DMM and on front panel Reading within specified high range display 300V 45Hz limits Program FREQ 400 aa Record voltage readings at DMM and on front panel Reading within specified high range display 300V 400Hz limits L6 _ Program FREQ 1000 CURR PEAK 40 FU 7 Record voltage readings at DMM and on front panel R
120. e shield and ear protection when powering up this instrument Only repair units in a controlled area with no unprotected personnel present Related Documents The following documents are shipped with your ac source e aQuick Start Guide to help you quickly get started using the ac source e aUser s Guide containing detailed installation checkout and front panel information e a Programming Guide containing detailed GPIB programming information e a Quick Reference Card designed as a memory jogger for the experienced user 1 Introduction Revisions Instrument Identification The ac source is identified by a 10 digit serial number The items in this serial number are explained as follows US The first two letters indicates the country of manufacture where US USA 3729 This is a code that identifies either the date of manufacture or the date of a significant design change 0101 The last four digits are a unique number assigned to each unit Manual Revisions This manual was written for ac sources that have the same or higher serial numbers as those listed on the title page NOTE If the serial number of your unit is higher than that shown on the title page your unit was made after the publication of this manual and may have hardware or firmware differences not covered in this manual If they are significant to the operation and or servicing of the ac source those differences are documented in one or more Manual Change sheets in
121. e tests the voltage and current PWM loops are functioning properly If the A7 assembly fails when the internal 500 Vdc rail is applied it may be due to high voltage breakdown on either FETs or capacitors on the A7 assembly or the A9 output assembly 37 4 Troubleshooting A8 DSP and A10 Control Assembly Troubleshooting WARNING Use extreme caution These assemblies contain hazardous voltages during some troubleshooting procedures Disconnect the 500V dc rail between the A9 Output board and the A7 Inverter board by disconnecting the cable from J625 Also place an insulator over the DC Rail board NOTE To troubleshoot the A8 DSP board and the A10 Control board it is recommended to use the extender board from Service Kit 5063 2330 The extender raises the A8 and A10 boards from the unit to access the 7822 7722 and the J864 connectors Table 4 7 lists the general troubleshooting procedure analog voltage levels or digital signals can be generated using the front panel keypad Use an oscilloscope to easily distinguish the ac rms measurements from the dc measurements Tables 4 8 and 4 9 describe the expected input output signals between the DSP and the Control boards Table 4 7 DSP Control Assembly Troubleshooting Sp Procedure Result With the cable to J625 disconnected To check the J822 analog voltages enter the following commands from the front panel VOLTAGE VOLT 300 ENTER OUTPUT ON VOLTAGE OFFSET 425 E
122. eading within specified high range display 300V 1KHz limits Table 2 3 Constant Voltage Load Effect Action Normal Result This test measures the change in output voltage resulting from a change in output current from full load to no load or no load to full load 1 2 4 5 Turn off the UUT and connect DMM Load Resistors Current shunt and Ratio Transformer as shown in Test Setup Figure 2 1 with S1 closed 2 Turn on UUT Recall factory defaults with RST Set CV annunciator on output current near ALC DET RMS to rms then program output to VOLT 1 2 amps for 6811 A B 300 FREQ 60 SHAPE SIN 2 5 amps for 6812A B 5 8 amps for 6813A B 3 Record voltage reading of DMM Open S1 Output current near zero Record voltage readings at DMM Check test results The difference between the DMM readings in Step 3 amp 5 are within specified load effect limits 11 2 Performance Tests Table 2 4 Constant Voltage Source Effect Normal Result This test measures the change in output voltage resulting from a change in AC Mains Input voltage from minimum to maximum value within the line voltage specification Turn off the UUT and connect DMM Load Resistors Current shunt and Ratio Transformer as shown in Test Setup Figure 2 1 with 51 closed Connect UUT AC input through a variable voltage transformer Turn on the UUT Recall factory defaults with RST Set annunciator on output current near ALC DET RMS t
123. eshooting procedures in this chapter are performed with power applied and protective covers removed These procedures should be performed only by trained personnel who are aware of the hazards This product is a high energy instrument which means that it converts large amounts of energy during normal operation This can result in catastrophic component damage rapid violent component disassembly if certain components fail during operation When covers are removed always wear a face shield and ear protection when powering up this instrument Only repair units in a controlled area with no unprotected personnel present CAUTION This instrument uses components which can either be damaged or suffer serious performance degradation as a result of ESD electrostatic discharge Observe the standard antistatic precautions to avoid damage to the components An ESD summary is given in Chapter 1 This chapter provides troubleshooting and repair information for the AC Power Source Before beginning troubleshooting procedures make certain the problem is in the AC Power Source and not with an associated circuit the GPIB controller or AC input lines Without removing the covers you can use the verification tests in Chapter 2 to determine if the AC Power Source is operating normally Test Equipment Required Table 4 1 Test Equipment Requirements for Troubleshooting Equipment Characteristics Recommended Model GPIB Controller Communicate w
124. essible via the GPIB using the IDN query The following sample Keysight BASIC program does this 10 ALLOCATE L 52 20 OUTPUT 705 IDN 30 ENTER 705 LS 40 DISP L 50 END The computer will display the string KEYSIGHT TECHNOLOGIES lt model gt 0 lt revision gt Upgrade Procedure It is possible to update to newer ROM versions without destroying the calibration data To update the unit to newer ROM revisions perform the following 1 Turn input power off remove the old ROMs and install the new ROMS 2 Turn the unit on then do the front panel CAL ON command 3 Press 0 and 9 keys simultaneously then scroll to the ROMUPD command 4 Scroll to the correct model number and press ENTER If the command is successful the front panel display will go through a normal power on sequence If OUT OF RANGE error is displayed then the instrument will have to be re initialized with the EEINIT command and re calibrated This can occur if the instrument was previously initialized with a QA firmware revision QA xx xx or if non volatile memory has become corrupted for any reason 44 Troubleshooting 4 Post Repair Calibration Calibration is required annually and whenever certain components are replaced If components in any of the circuits listed below are replaced the supply must be re calibrated as described in Appendix B of the User s Guide a 8 DSP Assembly b A9 Output Filter Relay Assembly c 1
125. ever 95 9 S t LCSd occur oz zz r m mpm 95 7297 ASI 5 1 OV A ATNGSSY LNO Figure 4 6 Bias Assembly Voltage Distribution 32 Troubleshooting 4 A7 Inverter Assembly Troubleshooting WARNING SHOCK HAZARD EQUIPMENT DAMAGE PERSONAL INJURY Failure to first follow the slow start procedure after replacing the A7 inverter board may result in catastrophic component damage when powering up the instrument When covers are removed always wear a face shield and ear protection when powering up this instrument Only repair units in a controlled area with no unprotected personnel present NOTE Earlier ac source models used a through hole inverter assembly An updated surface mount inverter assembly refer to the parts list is the recommended replacement part for all previous version ac source inverter assemblies The surface mount inverter assembly is not component level repairable TURNON AC SOURCE ONO TROUBLESHOOT A8 DSP A 10 lt Bs ae OEE LOW pd CONTROL ASSEMBLIES SEE FIG 6 18 Hu ue M YES CHECK FOR PWM SIGNALS AT PWM DRIVE A10U 1801 25 SEE FIG4 8A 2 Pd pd A10U 1801 25 SIGNAL N PRESENT S EN YES TURN UNIT OFF REMOVE CABLE FROM OUTPUT A7 J625 TURN UNIT ON Y CHECK 601 THRU Q 608 611 THRU Q 618 SIGNALS SEE 4 8
126. gure 6 19 Control Assembly Schematic Diagram sheet 5 of 7 I L MON T IMON RDBK SPARE SWITCH UR LIMIT n 150 I PERK PROG C1834 pe fs SOA_FAULT m r 12 4 E VERE PROG cud RAIL L FRULT _RMS_ DIODE_R_PCLR SHT2 HFDC_MDDU 15 5 es FRE e CL RMS WFDC_OFFSET U998 DG444DY SHT1 CIRCUIT 9 OVP_FAULT FAC_MODU sura e R901 AAA CU LEUELING SHT2 u 10K I_L_MDN U_MON DIGITAL CL_PEAK SHT1 2 7 e CU_REALTIME ANALOG s J822 51 0 RRIL H FRULT 11 o o2 51 0 e 3 4 57 0 RAIL_LO_WARN NC WFAC_PROG S o spe o 150 o 7 8 LEU FRULT SHT1 WFDC_PROG se er R1805 1515 1 9 fiz NOT 15 REG FRULT amp R903 6 19U LORDED 17 E I RMS PROS NC 51 o 14 511 DG444DY i 19 9 m WFAC 15 16 6 19U 8 21 2 IPCL TEST am 12 l9 tie REF 504 521 0 em 5 19 9 9 Tao ies PROT_CLEAR U_RMS_TRIM T 15U 21 o o 22 IMON 10X 23 24 OUT_RELAY 2_DAC_REF 551 0 9 126 SHT Ne 32 9 9 128 SBNE TRIM 29 O 50 50 8 5 150 I_MON_RMS 311 952 45 R1804 PCLR 5 Nc S o 53 NOT HS MON LOADED SUB_A1 E 150 SHTS 0981 15 5 005 DOWN 1 150 ut
127. ing a T25 Torx screwdriver remove the screws holding the carrying straps on each side of the AC source Total of 4 screws To remove slide cover toward rear of unit to disengage it from front panel spread bottom of cover to lift it from the unit When replacing the outer cover carefully align front of cover with front frame and rear bottom corners with rectangular blocks mounted on the chassis Inner Top Cover Removal a b Using a T15 Torx screwdriver remove 4 screws holding the top of the inner cover 3 screws holding the left side and 4 screws holding the right side Lift the inner cover straight up and off the unit A1 Front Frame Panel Assembly Removal and Replacement a b Remove the top cover as described earlier Locate and carefully peel off the vinyl trim strips one on each side of the frame to gain access to the side screws the secure the front frame to the chassis Using a T10 Torx screwdriver remove 2 screws from each side of the front frame Move the front frame forward a few inches and disconnect the phone type cable from connector A1J6 located on the front panel PC board Move the right side of the front frame forward pivoting on the left corner to gain access to S1 on off switch Disconnect the wires going to switch S1 noting the color code of the wires and the respective switch terminals to which they connect for subsequent reconnection The front frame can now be removed from the AC source
128. ir or replace products which prove to be defective Keysight Technologies does not warrant that the operation for the software firmware or hardware shall be uninterrupted or error free For warranty service with the exception of warranty options this product must be returned to a service facility designated by Keysight Technologies Customer shall prepay shipping charges by and shall pay all duty and taxes for products returned to Keysight Technologies for warranty service Except for products returned to Customer from another country Keysight Technologies shall pay for return of products to Customer Warranty services outside the country of initial purchase are included in Keysight Technologies product price only if Customer pays Keysight Technologies international prices defined as destination local currency price or U S or Geneva Export price If Keysight Technologies is unable within a reasonable time to repair or replace any product to condition as warranted the Customer shall be entitled to a refund of the purchase price upon return of the product to Keysight Technologies LIMITATION OF WARRANTY The foregoing warranty shall not apply to defects resulting from improper or inadequate maintenance by the Customer Customer supplied software or interfacing unauthorized modification or misuse operation outside of the environmental specifications for the product or improper site preparation and maintenance NO OTHER WARRANTY IS EXPRE
129. ith AC Source via GPIB or RS232 HP Series 200 300 controller or equiv Digital Voltmeter Check voltages resistances Keysight 3458A or equivalent Function Generator Oscilloscope Check output current 0 01 ohm 10 watt Logic Probe Troubleshooting Hints e Service kit 5063 2330 contains 2 PC board holders to hold the A5 DC Rail board in a vertical position for troubleshooting and a PC board extender that raises the A8 DSP and A10 Control boards above the chassis for troubleshooting Extender board part number 5063 2331 PC B holder part number 5020 8458 e Locate and observe the 2 red LEDs one on each side of the unit which indicate when high voltage is present on the A4 AC input board A5 DC rail board and A9 output board Wait for the LEDs to extinguish before removing or installing assemblies e f both CV and CC annunciators on the peak current limit is may be set too low 21 4 Troubleshooting Power on Self test Failures The power on self test sequence tests of most of the digital and DAC circuits If the supply fails self test the display ERR annunciator will come on You can then query the unit to find out what the error s are When an error is detected the output is not disabled so you can still attempt to program the supply to help troubleshoot the unit Table 4 2 lists the self test errors and gives a possible remedy for each error Table 4 3 lists the run time errors that can occur at any time while the uni
130. l during operation When covers are removed always wear a face shield and ear protection when powering up this instrument Only repair units in a controlled area with no unprotected personnel present Servicing instructions are for use by service trained personnel To avoid dangerous electrical shock do not perform any servicing unless you are qualified to do so Before switching on the instrument the protective earth terminal of the instrument must be connected to the protective conductor of the mains power cord The mains plug shall be inserted only in an outlet socket that is provided with a protective earth contact This protective action must not be negated by the use of an extension cord power cable that is without a protective conductor grounding Grounding one conductor of a two conductor outlet is not sufficient protection If this instrument is to be energized via an auto transformer for voltage change make sure the common terminal is connected to the earth terminal of the power source Any interruption of the protective grounding conductor or disconnection of the protective earth terminal will cause a potential shock hazard that could result in personal injury Whenever it is likely that the protective earth connection has been impaired this instrument must be made inoperative and be secured against any unintended operation Only fuses with the required rated current voltage and specified type normal blow time delay e
131. mon A11 U157 12 U165 13 Positive pulse referenced to H common A11 U165 12 U164 10 Positive pulse referenced to D common All U164 11 Negative pulse referenced to D common RI Remote Inhibit Troubleshooting Enter the following front panel commands VOLTAGE VOLT 100 ENTER OUTPUT ON 100 Vac at the output terminals 2 Short the RI terminals together J113 3 to J113 4 Ouput goes to 0 Vac Output relay opens PROT annunciator comes on 3 If the output does not disable trace the signal from the A8 DSP board at the following locations Normal RIShorted 1 1 2 1 Connect an oscilloscope to the Trig Out BNC and Check for a trigger output pulse every time the enter the following front panel commands Trig In BNC is shorted see Figure 4 10E SHIFT OUTPUT TTL STATE ON ENTER TRIGGER CONTROL INIT CONT ENTER 1 A11 U165 6 LOW HI All U161 5 HI LOW 42 Troubleshooting 4 Table 4 10 Trigger BNC Board Troubleshooting continued Step DFI Discrete Fault Indicator Troubleshooting Connect a 5 Vdc source to the DFI terminals via a See Figure 4 10F 5K resistor Connect a controller to the GPIB connector and send the following GPIB commands OUTPUT 705 OUTP DFI ON OUTPUT 705 OUTP SOUR QUES OUTPUT 705 STAT QUES ENAB 512 Connect a voltmeter between J113 1 and J113 2 Voltmeter should read 5 Vdc Short the RI terminals together J113 3 to J113 4 Voltmeter should read LOW lt 0 07 Vdc
132. n Audio Analyzer 1 Front Panel Display 1 Frequency Programming amp Readback Accuracy Program 400 Hz 399 960 Hz Hz 400 040 Hz 0 005Hz Front Panel Display Fo 0 040 Hz Hz Fo 0 040 Hz DC Voltage Programming amp Readback Accuracy 425 VDC Output 424 075 Vdc 425 925 Vdc Front Panel Display Vo 0 363 Vdc Vde Vo 0 363Vdc 425 VDC Output 424 075 Vdc 425 925 Vdc Front panel Display Vo 0 363 Vdc Vde Vo 0 363 Vdc Note 1 Measurement uncertainties are only valid when using test equipment listed in Table 2 1 2 Voltage Programming and Readback measurement uncertainties are for a 3458A DMM in the 1000 volt range 3 Measurement uncertainties in parenthesis are only if a 30 1 ratio transformer is used with the 3458A DMM 15 2 Performance Tests Table 2 11 Performance Test Record Keysight 6813A B 6842A Model Report No Date Test Description Minimum Results Maximum Meas Specification Specification Uncert Voltage Programming amp Readback Accuracy 300Vrms 45Hz 299 250 300 750 Front Panel Display Vrms 190mV Vrms 190mV 300Vrms 400Hz 298 200 301 800 Front Panel Display Vrms 400mV Vrms 400mV 300Vrms 1KHz 296 700 303 300 Front Panel Display Vrms 700mV Vrms 700mV CV Load Effect Vout 1 5V Vout 1 5V CV Line Effect Vout 0 3V Vout 0 3V rms Current Readback Front Panel Display High Range A models Io 0 0175A Front Panel Display Low Range A models Io 0 0045A Front Panel Display High Range
133. ng 4 Table 4 3 Run Time Errors Possible Remedy Outgrd not responding EUN E k Front panel not responding ENSE 210 Ingrd receiver framing error Ingrd uart overrun status Ingrd received bad token nt 213 Ingrd receiver buffer overrun Ingrd input buffer overrun 25 216 217 218 Ingrd inbuf count sync error 220 Front panel uart overrun Front panel uart framing Front panel uart parity Front panel uart parity ss 223 224 401 CAL switch prevents calibration CAL password is incorrect CAL not enabled CAL not enabled 406 600 Systems in mode list have different list lengths O OK O 601 Requested voltage and waveform exceeds peak voltage capability K 602 Requested voltage and waveform exceeds transformer volt second rating K Command only applies to RS 232 interface Trigger received before requested number of pre trigger readings K O Requested RMS current too high for voltage range I Waveform data not defined 607 VOLT VOLT SLEW and FUNC SHAP modesincompa ble K 608 Measuremenoverae TK 60 jOupubuferovmun K 610 Command cannot be given with presen SYST CONF setting K Communication error between Al GPIB A8 DSP and or 11 trigger assemblies Communication error between A3 front panel A8 DSP and A11 Trigger assemblies RS 232 communication or programming error Check CAL switch positions see Figur
134. ng some troubleshooting procedures Use extreme caution When covers are removed always wear a face shield and ear protection when powering up this instrument Only repair units in a controlled area with no unprotected personnel present Table 4 10 Trigger BNC Board Troubleshooting Sp Procedure Result O Communications Troubleshooting Turn on unit with no voltage or current programmed See Figure 4 10A B C D As long as waveforms and the output off Use an oscilloscope and check for are similar communications are OK A problem pulses at U150 1 U151 5 U153 3 and U154 1 exists if waveforms never go high or low Trigger Out Troubleshooting Connect an oscilloscope to the Trig Out BNC and Check for a trigger output pulse every time the enter the following front panel commands SHIFT TRIGGER command is entered see SHIFT OUTPUT TTL STATE ON ENTER Figure 4 10E TRIGGER CONTROL INIT CONT ENTER Then enter SHIFT TRIGGER If no output is observed trace the signal from the A8 DSP board at 11 U165 12 Negative pulse referenced to H common A11 U157 12 U165 13 Positive pulse referenced to H common A11 U165 12 U164 10 Positive pulse referenced to D common All U164 11 Negative pulse referenced to D common Trigger In Troubleshooting TRIGGER CONTROL TRIG SOUR EXT ENTER Then short the Trig In BNC pull low If no output is observed trace the signal from the A8 DSP board at A11 U165 12 Negative pulse referenced to H com
135. o rms then program output to 1 2 amps for 6811 A B VOLT 300 FREQ 60 SHAPE SIN 2 5 amps for 6812A B 6841A 5 9 amps for 6813A B 6842A Adjust variable voltage transformer to low line condition 104 or 207 VAC 5 Record voltage reading of DMM Adjust variable voltage transformer to high line condition 127 or 253 VAC 7 Record voltage readings at DMM Check test results The difference between the DMM readings in Step 3 amp 5 are within specified line effect limits Table 2 5 RMS Current Accuracy Test Normal Result This test verifies the measurement accuracy of the rms current readback 1 Turn off the UUT and connect 20 ohm Load Resistor current shunt and DMM as shown in Test Setup Figure 2 1 with S1 closed 2 Turn on the UUT Recall factory defaults with RST Set CC annunciator on output current ALC DET RMS to rms and then program output voltage to near 2 5 amps for 6811A B near 5 VOLT 60 FREQ 60 SHAPE SIN CURR 2 50 for 6811A B amps for the 6812A B 6813A B VOLT 120 FREQ 60 SHAPE SIN CURR 5 00 for the 6841A 6842A 6812A B 6813A B 6841A 6842A Record DVM reading and calculate rms current Readings are within specified current high range limits Program CURR RANGE LOW CC annunciator on output current near 2 5 or 5 0 amps Record DVM reading and calculate rms current Readings are within specified current low range limits 12 Performance Tests 2 Table 2 6 Harmonic Distortion Test
136. omponent level repairable The 6811A B 6812A B and 6841A use one common assembly the 6813A and 6842A use a different unique assembly A4 AC Input Assembly The AC input mains voltage is connected on the rear panel via J1049 to the A4 AC Input board The AC input board converts the AC mains to a nominal 320 volt DC rail for use by the AC FET assembly Relays K1040 and K1041 prevent the DC rail from energizing until the front panel on off switch closed Resistors R1040 R1041 R1045 and R1046 limit turn on surge current to the input filter capacitors C1060 thru C1067 Relay K1040 bypasses the current limit resistors when energized Relay K1040 is controlled by FET Q1040 who is driven by the input rly iso signal derived from the DSP assembly Wire jumper J1047 connects the full wave bridge rectifier D1060 and input capacitors C1060 thru C1067 as either a voltage doubler for 120 volt mains or full wave bridge for 220 240 volt mains Fuse F1020 is the main AC line fuse and F1080 protects the 320 volt DC rail to the AC FET assembly The A4 assembly is component level repairable and there are 3 unique assemblies One for the 6811A B another for the 6812A B and 6841A and another for the 6813A B and 6842A A5 DC Rail Assembly The A5 DC Rail assembly contains U447 the CV error amplifier U491 PWM driver U462 PWM comparator and U475 ramp generator to control the FET H bridge on the A3 ACFET assembly The chassis mounted power transformer connects the 42 KHz A
137. oupler U362 transmits the input rly iso signal to relay K1040 on the AC input assembly J337 supplies 5 and 15 volts to the control assembly via the Output Filter assembly and 48 volts AC via E336 to the DC rail assembly The A6 assembly is a component level repairable assembly There is one unique assembly for the 6811A B 6812A B and 6841A and another unique assembly for the 6813A B and 6842A A7 Inverter Assembly The A7 Inverter output amplifier assembly is a switching H bridge FET assembly operating at approximately 83 KHz It receives its switching logic from the A10 control assembly The A7 Inverter assembly can provide a sine square clipped sine arbitrary waveform or DC level to the A9 Output Filter assembly The Keysight 6813A B and 6842A uses twice as many power FETs as the Keysight 6811A B 6812A B and 6841A assembly Slow start procedures disconnecting the 503 volt DC rail should be used when troubleshooting the Inverter assembly See Inverter troubleshooting for more complete information on slow start procedures Earlier ac source models used a through hole inverter assembly An updated surface mount inverter assembly refer to the parts list is the recommended replacement part for all previous version ac source inverter assemblies The surface mount inverter assembly is not component level repairable A8 Digital Signal Processing DSP Assembly The DSP assembly contains the CPU ROMs Digital to Analog DACs circuits
138. placement a b LONE m Remove the outer and inner top covers as described earlier Remove A5 DC rail board as described earlier Disconnect cables from J306A J306B J335 J337 J339 and J343 Disconnect wires going to S1 on off switch Record where wires terminate at switch Using T15 Torx screwdriver remove 1 screw holding A6 bias board to chassis Using 2PT posidrive screwdriver remove 4 screws holding bias transformer and A6 bias board to chassis Slide A6 bias board to the left and lift from chassis To reinstall the A6 Bias board perform the above steps in reverse order A7 Inverter Assembly Removal and Replacement a b ry P m Remove outer and inner top covers as described earlier Lift fan out of chassis and rest on A5 dc rail board Disconnect cables to J526 and J527 on A9 output board Disconnect cables to J625 from A9 output board and J638 from A bias board Disconnect cables to J828 and 7855 on A10 control board Disconnect cable at J444 on A5 DC rail board to help in removal of A7 Inverter assembly Using T15 Torx screwdriver remove screw holding A7 Inverter assembly to rear chassis Slide A7 Inverter assembly toward front of unit and lift from chassis To reinstall the A7 Inverter assembly perform the above steps in reverse order A8 DSP Board and A10 Control Board Removal and Replacement a b C 09 Remove outer and inner top covers as described earlier Di
139. roubleshooting A2 GPIB RS 232 Board Troubleshooting A3 FET Board Troubleshooting A5 DC Rail Assembly Troubleshooting A6 Bias Assembly Troubleshooting A7 Inverter Assembly Troubleshooting Slow Start Procedure A8 DSP and A10 Control Assembly Troubleshooting A9 Output Filter Relay Assembly Troubleshooting A11 Trigger BNC Board Troubleshooting Initialization ROM Upgrade Identifying the Firmware Upgrade Procedure Post repair Calibration Inhibit Calibration Switch Disassembly Procedures List of Required Tools Top Cover outer cover Removal Inner Top Cover Removal Front Frame Panel Assembly Removal and Replacement A2 HI IB RS 232 Board Removal and Replacement A3 AC FET Assembly Removal and Replacement A4 AC Input Board Removal and Replacement A5 DC Rail Board Removal and Replacement A6 Bias Board Removal and Replacement 7 Inverter Assembly Removal and Replacement A8 DSP Board and A10 Control Board Removal and Replacement A11 Trigger BNC Board Removal and Replacement A9 Output Board Removal and Replacement 5 REPLACEABLE PARTS LIST Introduction Reading the Tables How to Order Parts 6 DIAGRAMS Introduction General Schematic Notes List of Figures INDEX 51 51 63 63 64 115 Introduction Organization This manual contains information for troubleshooting and repairing to the component level models Keysight 6811A B 6812A B and 6813A B Power Source Analyzers and models Keysight 6841A and 6842A Harmoni
140. s board contains hazardous voltages during some troubleshooting procedures Use extreme caution When covers are removed always wear a face shield and ear protection when powering up this instrument Only repair units in a controlled area with no unprotected personnel present Before troubleshooting the A5 DC Rail board refer to the previous procedure and determine that the A3 AC FET Assembly is good The 503 Vdc rail 4Vdc is generated from the 300 Vac input board rail the A3 FET board and the power transformer The A5 DC Rail board contains the PWM and CV error amplifiers for controlling the FET switches Troubleshooting the bias PWM and CU error amplifiers must be done with the 300 Vdc rail disconnected from the A3 FET assembly DISCONNECT CABLE FROM FET BOARD TO J1042 ON A4 AC INPUT BOARD DISCONNECT CABLE FROM A9 OUTPUT BOARD TO J625 ON A7 INVERTER BOARD REMOVE 5 SCREWS HOLDING A5 DC RAIL BOARD AND HOLD A5 DC RAIL BOARD IN VERTICAL POSITION USING BOARD HOLDERS JUMPER 1 amp TP TURN ON AC INPUT N START MEASURE BIAS VOLTAGES TP404 COMMON TP401 15VDC TP402 15VDC TP403 5VDC MEASURE 10V RAIL_REF C454 10 00VDC CHECK U423 BIAS DETECT CIRCUIT PWM_EN WILL INHIBIT A8 DSP BOARD CHECK EXT SYNC U436 3 TO WAVEFORMS CHECK EXT SYNC A10 J824 1 CONTROL BOARD LN ELA IF SIGNAL NOT PRESENT A10 J824 1 THEN o
141. sconnect cable from A7 Inverter assembly to J746 on the A8 DSP board Disconnect cables to J828 and J855 on A10 control board Disconnect cable to J115 on the A11 Trigger board Using T15 Torx screwdriver remove 3 screws holding A10 Control board to right side of chassis Lift A10 Control board from chassis Using T15 Torx screwdriver remove 6 screws holding A8 DSP board to A10 Control board To reinstall the A8 DSP and A10 control boards perform the above steps in reverse order 49 4 Troubleshooting A11 Trigger BNC Board Removal and Replacement a b Remove outer and inner top covers as described earlier Disconnect cable from A10 control board to J115 Disconnect cables to J106 and J112 Mark cables to J106 and J112 before removing If the cables are reversed during replacement the ac source will not pass turn on self test Use 5 8 inch socket box wrench to remove nuts holding BNC connectors to rear panel Remove A11 Trigger board from unit To reinstall the A11 Trigger BNC board perform the above steps in reverse order A9 Output Board Removal and Replacement a b 50 Remove outer and inner top covers as described earlier Remove A7 Inverter assembly A8 DSP A10 Control and A11 Trigger boards as described earlier Disconnect cable going to J337 on the A6 bias board Disconnect cable going to J445 on the A5 DC rail board Using T15 Torx screwdriver remove 4 screws holding A9 output board to
142. sted Output Relay Filter Board Tested Control Board Tested Control Board Tested Control Board Tested Trigger BNC Board Thermistor Board Power Transformer Assembly KEYPAD AC SOURCE FRONT FRAME WINDOW FRONT PANEL LABEL KNOB 6mm NAMEPLATE NAMEPLATE NAMEPLATE NAMEPLATE NAMEPLATE NAMEPLATE NAMEPLATE NAMEPLATE JUMPER BARR BLK CVR TERM BLK DC SCREW DC COVER INV HEAT SINK FET PAD INVERTER DFL RI TERM BLK 4 POS CABLE TIE CLAMP CABLE rail choke LINE SWITCH TRIM SIDES FR GY COVER CHASSIS INVERTER CHASSIS AC FET Replaceable Parts 5 Table 5 1 Main Assembly continued 5001 9803 CHASSIS TOP 5001 9804 PANEL REAR 5001 9805 BRACKET FAN 5001 9808 FET CLIP 5001 9809 BRACKET DC RAIL 5040 1676 SAF CVR AC INPUT 5040 1697 BLOCK TOP COVER 5040 1704 AC SAFETY COVER 5041 8801 FOOT 5041 8819 CAP STRAP HANDLE 5041 8820 CAP STRAP HANDLE 5060 3570 CHASSIS ASSY 5062 3705 STRAP HANDLE 5080 2328 CHOKE LINE 5080 2329 CHOKE RAIL 5080 2339 LABEL REAR PANEL 5080 2341 XFMR INSULATOR 5080 2342 INSULATOR 5080 2348 CABLE ASSEMBLY 5080 2353 CABLE ASSEMBLY 5080 2356 CABLE ASSEMBLY 5080 2362 ASSY FAN All 5080 2365 CABLE All 5080 2373 INSULATOR INVERTER All 5080 2380 CABLE ASSEMBLY All 5080 2381 CABLE ASSEMBLY All 5080 2397 CABLE ASSEMBLY All 5062 3977 RACK MOUNT KIT without handles All 5062 3983 RACK MOUNT KIT with handles All 7120 8214 LABEL WARNING All 7121 2794 LABEL ID SN All 9100 5145 XFMR SWITCH POWER All 8120 5573 PWR
143. t is running NOTE A partial self test is performed when the TST query is executed Those tests that interfere with normal interface operation or cause the output to change are not performed by TST The return value of TST will be zero if all tests pass or the error code of the first test that failed The power supply will continue normal operation if TST returns a non zero value Table 4 2 Self Test Errors i0 11 31 DAC selftest error expected n read reading Errors 11 12 13 14 15 apply to DACI2 1A and 1B Errors 16 17 18 apply to DACI2 2A Errors 19 20 21 apply to DAC12 2B Errors 22 23 apply to DACI2 4A Errors 24 25 apply to DACI2 4B Errors 26 27 28 apply to DACI2 3A and 3B Errors 29 30 31 apply to DACI2 5A and 5B Voltage selftest error C Non volatile RAM WAVEFORM section checksum failed jo pem 3 Non volatile RAM CAL section checksum failed 5 fos E 1 2 3 4 5 7 10 Fan voltage failure Digital I O selftest error Re initialize unit and re calibrate If unit still has RAM error replace A8 DSP board Check 8 DSP and A10 Control assemblies TST programs 50 volts expected readback 50 Ivolt 0 1amp g O gt Check fan and or fan voltage or replace A8 DSP assembly Run Time Errors Run time errors do not occur during self test but can occur at any time while the unit is running See Table 4 3 22 Troubleshooti
144. tc should be used Do not use repaired fuses or short circuited fuseholders To do so could cause a shock or fire hazard Do not operate this instrument in the presence of flammable gases or fumes Do not install substitute parts or perform any unauthorized modification to the instrument Some procedures described in this manual are performed with power supplied to the instrument while its protective covers are removed If contacted the energy available at many points may result in personal injury Any adjustment maintenance and repair of this instrument while it is opened and under voltage should be avoided as much as possible When this is unavoidable such adjustment maintenance and repair should be carried out only by a skilled person who is aware of the hazard involved Capacitors inside this instrument may hold a hazardous charge even if the instrument has been disconnected from its power source SAFETY SYMBOLS Refer to the table on the following page WARNING The WARNING sign denotes a hazard It calls attention to a procedure practice or the like which if not correctly performed or adhered to could result in personal injury Do not proceed beyond a WARNING sign until the indicated conditions are fully understood and met Caution The CAUTION sign denotes a hazard It calls attention to an operating procedure or the like which if not correctly performed or adhered to could result in damage to or destruction of part or all of
145. that control the output voltage and output current settings It contains Analog to Digital ADCs circuits to readback actual output voltage and current It contains all logic circuits for generating arbitrary waveforms frequency changes and transient or pulse level changes At power on the A8 DSP assembly performs a self test and reports any failures via the front panel display The A8 assembly is an SMT assembly and is not component level repairable except for the ROMs which are installed in sockets and are replaceable for ROM upgrades There is one unique assembly for models 6811A B 6812A B and 6813A B and another unique assembly for models 6841A and 6842A A9 Output Filter Assembly The A9 Output filter assembly contains U500 the remote sense amplifier and K501 remote sense relay The rms and peak current sense resistors overvoltage divider and output disconnect relays K502 and K503 older manufactured units use one output disconnect relay K500 The A9 Output assembly contains 2 notch filters to reduce the inverter switching frequency noise in the output It provides a communication path between the A10 Control assembly A5 DC rail assembly and A6 Bias assembly The A9 assembly is component level repairable There is one unique assembly for model 6811A B and another unique assembly for models 6812A B 6813A B 6841A and 6842A 19 3 Principles of Operation A10 Control Assembly The A10 Control assembly contains the PWM comparator and
146. urce cannot be changed calibration commands are disabled If the CAL ON command is sent with the switch in this position an Out Of Range error will be displayed on the front panel This option is useful in installations where calibration access is guarded by instrument seals 45 4 Troubleshooting Disassembly Procedures The following paragraphs provide instructions on how to disassemble various components of the ac source Once disassembled the components can be reassembled by performing the disassembly instructions in reverse order Figure 4 12 shows the location of the major components of the unit Figure 4 12 Component Locations CAUTION Most of the attaching hardware is metric Use of other types of fasteners will damage threaded inserts Refer to list of required tools when performing disassembly and replacement 46 Troubleshooting 4 WARNING SHOCK HAZARD avoid the possibility of personal injury turn off AC power and disconnect the line cord before removing the top cover Disconnect the GPIB cable any loads and remote sense leads before attempting disassembly List of Required Tools T10 T15 and T25 Torx screwdrivers Allen wrench 0 050 inch 2PT Pozidriv screwdriver 2 Phillips screwdriver 3 16 inch flat blade screwdriver 7mm and 10mm Hex drivers 5 8 inch Hex driver or box wrench Static free workstation and antistatic wrist discharge strap Top Cover outer cover Removal a Us
147. ut terminal Disconnect the 30 1 transformer Open 51 2 Turn on UUT Program output voltage to VOLT 0 Output voltage at 425 Vdc OUTP COUP DC OFFSET 425 output current near zero Record dc voltage at DVM and readback from front panel Readings within specified dc display voltage programming and readback limits Program output voltage OFFSET 425 Output voltage at 425 Vdc output current near zero Record dc voltage at DVM and readback from front panel Readings within specified DC display voltage programming and readback limits 13 2 Performance Tests Table 2 9 Performance Test Record Keysight 6811A B Model Report No Date Test Description Minimum Results Maximum Meas Specification Specification Uncert Voltage Programming amp Readback Accuracy 300Vrms 45Hz 299 250 300 750 Front Panel Display Vrms 190mV Vrms 190mV 300Vrms 400Hz 298 200 301 800 Front Panel Display Vrms 400mV Vrms 400mV 300Vrms 1KHz 296 700 303 300 Front Panel Display Vrms 700mV Vrms 700mV CV Load Effect Vout 1 5V Vout 1 5V CV Line Effect Vout 0 3V Vout 0 3V rms Current Readback Front Panel Display High Range A models Io 0 0175A Front Panel Display Low Range A models Io 0 0045A Front Panel Display High Range B models Io 0 01125A Front Panel Display Low Range B models Io 0 00275A Total Harmonic Distortion Audio Analyzer 1 Front Panel Display 1 Frequency Programming amp Readback Accuracy
148. ve from defective A7 PCA Or order this cable connect an external 60V 2A minimum DC power supply to the A7 Inverter assembly A7 J625 Turn on the unit and DC power supply Set the external DC supply for 0 volts and 2 amps current limit Slowly increase the external DC supply voltage to 60 Vdc observing the current from the external supply The external supply should go to 60 Vdc with only 200 to 300 milliamperes current from the external supply If the current raises immediately check for shorted FETs on the A7 Inverter assembly Connect an oscilloscope to the unit s output terminal block Enable the output Using the front panel knob increase the output voltage while observing the oscilloscope A harmonic free sine wave should appear on the oscilloscope until the output voltage reaches approximately 30 35 volts At this time the sine wave will develop a flat top This test verifies the voltage control loop Disable the output and connect a load resistor 20 ohms capable of sinking 1 5 to 2 amps to the output terminals of the unit Enable the output and set CURR LEV to 1 amp The unit should current limit at 1 ampere and the CC annunciator should come on The response of the RMS CURR LEV loop is slow so you will have to wait a moment Set the CURR LEV to 3 amps and set CURR PEAK to 1 amp Both the CV and CC annunciators should come on These tests verify both the RMS and PEAK current loops If the A7 Inverter assembly passes the abov
149. version FET assemblies The surface mount FET assemblies are not component level repairable Table 4 5 FET Board Troubleshooting Ea a With all power removed its heatsink assembly attached see Disassembly Procedures Measure the resistance between the Rail E502 and the Rail Value should be gt 20 E501 and common Rail 3 Measure the resistance between the gate of each FET Q201 Value should be 15 204 Q211 Q222 Q233 and Q244 and common Rail Measure the resistance across capacitor C201 Value should be approx 1500 5 Measure the resistance across the 15 V bias input E506 to Value should be approx 1 kQ in the E507 forward direction and 490Q reversed With signal from external waveform generator applied al ll SO collector case of each transistor to common E507 8 Connect a waveform generator to 1200 1 and 002 L9 Set generator to produce a 20kHz 20Vp p triangular waveform See 43A U UU U Connect 15 V from an external nl to E506 positive and Value should be approx 1 kQ in the E507 common forward direction and 4900 reversed Note of the following measurements are taken with respect to Ee common same as TP 26 on A3 FET Board While adjusting the external 15 V input check the bias Voltage goes from low of OV to high of trip point at U204 1 TP 28 5V at an input of approx 12V and from high to low at an input of approx 13
150. ways wear a face shield and ear protection when powering up this instrument Only repair units in a controlled area with no unprotected personnel present The A7 Slow Start troubleshooting procedure allows testing the A7 inverter assembly and A10 control assembly voltage and current loops using an external DC power supply in place of the AC source 500 Vdc rail Service Kit 5063 2330 will be required to perform both procedures 1 10 11 12 Turn off the UUT AC source and remove cable 5080 2698 from A7 J625 This cable disconnects the 500 Vdc rail from the A7 Inverter assembly WARNING SHOCK HAZARD Unless you perform step 2 the 500 Vdc rail will still be present on the A5 dc rail assembly during the slow start procedure To disable the 500 Vdc rail during the following tests disconnect cable 5080 2365 from A5 J400 This will remove the PWM drive to the A3 AC FET assembly and disable the 500 Vdc rail Then connect a jumper from A5 J445 4 to A5 J445 10 This disables the LOW FAULT signal and allows the DSP assembly to function Use the extender board from the service kit and raise the A8 DSP and A10 Control assemblies from the unit Verify that the A8 and A10 assemblies are functioning properly Refer to the A8 DSP and A10 Control assembly troubleshooting procedures If the A8 DSP and A10 Control assemblies check good turn off the unit and re install the A8 and A10 assemblies in the unit Using cable 5080 2381 remo

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