Addendum A - SERVICE MANUAL
Contents
1. vso1l8 2 UMON BUFFER HIGH FREQ VOLTAGE FEEDBACK R458 E R505 iu 0447 AAA OUT ME op adver 1 B2K 47 0425 2 R504 1000 1000 150 ZND4ee 10K 5U ee OVER CURRENT 6 Lu 500 SAS R497 5U CIRCUIT C427 S e00 5x 31 6K Y REF FET CONTROLO hp 047 enzooo 144 an an OC PROG x SR BUFFER 500 10x Y 499 FETS_OFF D430 15 R729 3 eju408 82 5K R451 15U R464 R471 se 0405 0415 681 gt 2 49K 100 1 K D420 Y 1N4150 E k R452 R454 265 144150 Ov NNV NNV IOC 2706P C419 SK 1 75 ERROR AMPLIFIER Z700PF 1000 7 820 R470 431 AN NOT LOADED NOT LOADED 45U M h kia C420 E 2909 CIRCUIT 715 16 46 O PROG 1099 GROSS CURRENT LIMIT D409 I R503 14 7K 2444 14645 619 2501 2 R476 P M C LOHER UGC 5 916 15U 15V D408 14 7K J672 AX R445 R441 JACK IMON 1N645 1 5K 5 R465 5 6 IMON 6 POS 10K 1 R467 0407 1 249K 319 9 CCK 2 Aj j8 J673 86 i TELE A 54072 R508 z P R507 y 10K 12 1K 15V 4 E 15V GATED 5 6 7047 2 la 6 SCR GATE V 6 POS 500 FLAG CIRCUIT y 1 DRIVE grsis 26514 GATED oP CONTROL2. R401 R413 3 83K 0698 3153 7 5K 0757 0440 SH1 3 A J900 16 R402 R403 5 1 0698 6320 10K 1 0698 6360 15 1900 5 2405 R409 9 09K 0757 0288 NO LORD R406 R408 125 05 0699 3446 250K 05x 0699 3104 R424 R429 0 8159 0005 0 8159 0005 OV PROG gt 7J900 11 R426 R427 1K 1 0698 6362 1K 14 0698 6362 PROG 900 17 R431 R436 0 8159 0005 0 8159 0005 Sem R433 R434 900 1 0698 6344 900 14 0698 6344 R441 1 21M 0699 0088 825K 0698 8826 900 5 2445 1 0698 8827 3 16M 0699 0070 SH1 2 D J900 9 R447 100K 0757 0465 182K 0757 0471 a R467 249K 0757 0270 130K 0757 0468 R475 619 0757 0418 221 0757 0282 FAN_PROG 4900 10 R480 619 0757 0418 221 0757 0282 SH1 5 8 J900 6 R489 24 3K 0757 0451 47 5K 0757 0457 4 5 J900 2 R493 536K 0699 1254 1M 0698 8827 R494 365 0757 0412 825 0757 0421 R502 4 12K 0698 3493 1 50K 0757 0427 259005 2505 14 7K 0698 3156 11 3K 0698 4121 kuj paren R508 12 1K 0757 0444 12 1 0757 0444 R608 0 8159 0005 82 5K 0757 0463 OVSCR 2 4900 4 2610 464 0698 0082 1K 0757 0280 gt gt 1900 29 2611 R614 100K 1x 0698 6358 100K 1x 0698 6358 s E R613 0 8159 0005 82 5K 0757 0463 R615 R628 0 8159 0005 60K 1 0698 6629 900727 R616 R619 50 1 0698 6977 100K 1 0698 6358 SH1 1 8 J900 26 R618 R625 825K 0698 8826 1 74M 0699 1972 594 gt 900 25 R703 025 2x 0811 3764 05 1x
3. GATED 90 15U amp POWERCLEAR FETS OFF R641 R646 3 83K 1K 0604 2656 R629 R652 21 5K 0605 2 4 64K 31 6K 9U 2222 5 R647 GATED U602 9604 0605 s lt f lt DUSCR E C609 ULN2003A 2 2 R651 20U R642 U602 4 6 URGO1 U602 UR600 U602 us 1 INHIBIT R654 UE 5 gt 1 4 e Sais 870606 46 4K 3 6U 3 6U ULN2003A ULN2003A ULN2003A SHUTDOWN R640 15u 602 602 7 59 LN2003A LN2003A EXTRA Figure 6 5 A1 Main Board Schematic Diagram for E4350B sheet 3 of 4 es OUTPUT RATINGS 60 VOLT 8 AMP 120 VOLT 4 AMP UMON gt BAA gt 1900 15 C401 C402 0 1 0160 4835 042 100U 0160 4834 C433 C403 C404 33h 0160 4807 NO LOAD J900 32 C428 100 0160 4812 Mao 0160 4808 Y LOADED C435 033 500 0160 5644 NO LOAD 1900 21 C440 022 1000 0160 4833 01 1000 0160 4832 R455 C601 0 1 4000 0160 6806 047 250 0160 4323 J900 22 C209 047 250U 0160 6804 015 400U 0160 6896 i C210 015 400U 0160 6896 015 400U 0160 6896 vr e 0900 15 C719 4000UF 0180 4265 1200 UF 0180 4311 509 C220 4000UF 0180 4263 1200 UF 0180 4311 CU_PROG 1900 50 C222 4000UF 0180 4263 1200 UF 0180 4211 SH2 7 8 CC PROG gt gt 1900 51 7 D 15U J900 18 _
4. TP47 0201 3 OUTPUT CONTROL 0 05V in CV mode comparator input to all stages 0 98V in CC mode TP48 U201 2 Stage 1 comparator input 0 05V in CV mode 0 98V in CC mode TP49 U201 1 Stage 1 FET driver input 3 75V in CV mode 4 78V in CC mode TP51 0202 2 Stage 3 comparator input 0 05V in CV mode 0 98V in CC mode TP52 U202 1 Stage 3 FET driver control 0 36V in CV mode 4 65V in CC mode TP54 U202 5 DP CONTROL 0 22V in CV mode 1 9V in CC mode TP55 U202 6 DP stage comparator input 0 22V in CV mode 1 9V in CC mode TP56 U202 7 DP stage comparator output 0 66V in CV mode 2 47V in CC mode A4A2 A4A4 RIGHT TUNNEL BOARDS FIGURE 6 7 The same measurement conditions apply as described for the A4A1 A4A3 Left Tunnel Boards TP58 0301 3 OUTPUT CONTROL 47mV in CV mode 0 99V in CC mode TP59 U301 2 Stage 1 comparator input 47mV in CV mode 0 98V in CC mode TP60 U301 1 Stage 1 FET driver control 3 3V in CV mode 4 75V in CC mode TP62 U302 2 Stage 4 comparator input 45mV in CV mode 0 98V in CC mode TP63 U302 1 Stage 4 FET driver control 0 45V in CV mode 4 5V in CC mode Service Addendum 45 1 Main Board Schematics Figure 6 5 The four schematic sheets for the A1 board included in this addendum replace figures 6 2 and 6 5 in the standard Service Manual for the Agilent Series 665xA DC Power Supplies The assembly drawing for the A1 main board included in this addendum replac
5. 4 o IR4 45 GIR6O4AFO Oo ojo Ol ajo 60 ida e Re48Ne o oj g o 2448 34 e of 5 C417 926499 e 1C608 e Vo _ e poa o d o 5 O oj lo Om o R634 e x o 5 ojojo o e R633 0 gt Lio o o Jaja QI Q605 nm o o gt 9999 OO C720 u o VIZ ho a 00 o x A A 409 L a o 7 SS l LINUS STON Cy SOON oY C425 2415 O o Sea aa 555 sle eE 5 PORO 06 SMS 5525 y o 9C453r9 4 0A ODO 4 0411 e Lo lo OJ cIR41 4L0 jooo o jooo0o0o0o0 o o 2220 R438 o Yaa MM Eidos R415 0 O as edc441 e D4346 0413 4 lonjo jojo edC460 o o an 0408 954409 256042241020 E E o R423 452 o RS17 o ce R727 o dodo e C442 9 Dopo C443 R474 e041 4 o 0000 GEQPPEREPEEEPOGOOGOROTPI R475 C411 o U402 452 A R476 R4310 2 DIN Olay Olin 0 of ho AH Sl R432 0 o R201Lo AY alu O o jo olo uy 7 Nw x lo W Jh s C41876 09999
6. 0160 5422 2 0160 5422 0160 5422 5 0160 5422 C6 0180 0393 C7 0180 0393 J501 1251 7330 900 1252 0242 715 1252 2634 721 1252 6419 722 1252 6419 0501 1855 0727 0502 1855 0727 R1 0699 0642 2 0699 0642 R3 0698 3700 R4 0699 0642 R5 0699 0642 R6 0699 0642 R7 0699 0642 R8 0757 0413 R9 0698 3279 R501 0757 0442 R502 0757 0442 Ul 1826 1533 Mechanical 0380 1262 0515 0430 Description Access Panel PCA Capacitor 0 022uF Capacitor 0 047uF Capacitor 0 047uF Capacitor 0 047uF Capacitor 0 047uF Capacitor 39uF 10V Capacitor 39uF 10V Modular Phone Rcpt Connector Post Connector Post Connector Post Connector Post MOSFET MOSFET Resistor 10K 0 1 0 1 Resistor 10K 0 1 0 1W Resistor 715 Ohm 1 0 125W Resistor 10K 0 1 0 1 Resistor 10K 0 1 0 1W Resistor 10K 0 1 0 1W Resistor 10K 0 1 0 1W Resistor 392 Ohm 1 0 125W Resistor 4 99K 1 Resistor 10K 1 0 125W Resistor 10K 1 0 125W IC Standoff Hex 12mm Machine Screw qty 2 Table 5 15 Parts List for Phone Adapter PC Assembly A7 Reference Designator Part Number 7 5063 4813 0757 0442 1251 7330 1252 2634 1855 0727 42 Service Addendum Description Phone PCA Resistor 10K 1 0 125W Modular Phone Rept Connector Post MOSFET Chapter 6 Differences Test Points Table 6 3 Test Points Test Point Signal Measurement and Conditions A1 Main Board Sheets 1 4 A
7. O o DO o ele or a DES panj Bal a eHOOLI MITIN D aloj lt olo ooo QU UU aaa 0000 Ree9 df e e jojo 07 O u U202 0201 Y 666666660 ono 554444 Ji Figure 6 6 A4 Left Tunnel Circuit Component Locations for E4350B 99999 cess PP PPP HEZI efcoz0s o 99999 o O R331 R330 5 oun o J302 alalalolulo R332 HOOO G OOHO o olololololo o O pepe a00 ipi CHO Che LI 0506 0304 54 TIu OOOO OOO 00 O Q308 Figure 6 7 A4 Right Tunnel Circuit Component Locations for E4350B RAIL J302 1 G 9U C309 dq F301 0 5A 5 J301 P R323 CONTROL 5 90 L 220 GATED 15V Ef THERM HS 9502 2 Fal TUN COM z r8 0301 LOADED GATED 94 R302 lt XQ301 3 4 F302 1 1 S V i VJ 1 MSFTO28J 2 5 150 F303 F304 0 SA R303 0 14 7K J300 2 7300 1 ik R305 R310 E R316 221K R301 100K R306 1 5 1 5 1 5 ix 1 1 y zu v GH9U G 9U G 9U G 9U RE A4RTZ01 MOUNTS TO UPPER J302 3 OUT INB HEATSINK AND CONNECTS o arm LET TO J300 ON TOP RIGHT TUNNEL ASSEMBLY ONLY NOTE UNLESS OTHERWISE SPECIFIED 1 A
8. 16 Ohm 300W adjusted for 15 Ohmite E300K16R for CC rms ripple and noise tests Ohm each connected in parallel or series 1 1 6 Ohm 300W Ohmite E300K1R6 Oscilloscope Sensitivity 1 mV Agilent 54504A Bandwidth limit 20 MHz Probe 1 1 with RF tip RMS Voltmeter True rms bandwidth 20 MHz Agilent 3400B Sensitivity 100 uV Variable Voltage Transformer Adjustable from 13 to 6 of input range Power min Superior Electric 0 to 280 Vac 7 5 2260 0 to 140 Vac 15 A 126U Service Addendum Measurement Techniques Note tests are performed in the FIXED as shown in Figure 2 1 Basic Test Setup Measure the DC voltage directly at the S and S terminals Set the SENSE switch at the back of the supply to the Remote position Connect the remote sensing leads from OUT to S and from OUT to S Use adequate wire gauge for the load leads as described in Chapter 4 of the Operating Manual 240 VDC TO OSCILLOSCOPE OR RMS VOLTMETER IP VPIMIMYP S SET no di REMOTE 120 uF 100 V c TO DVM CURRENT MONITORING TO DVM OR RESISTOR RMS VOLTMETER GUILDLINE 0 1 OHM TESTS 15 A 0 0496 O O USE DC POWER SUPPLY y SAME POLARITY CONNECTIONS FOR CC TEST ELECTRONIC LOAD Figure 2 1 Basic Test Setup Service Add
9. The areas in the standard service manual that are changed by this addendum are Test Equipment Required Table 2 1 Basic Test Setup Figure 2 1 Voltage and Current Values Table 2 3 CC RMS Noise Measurement Setup Figure 2 3 Performance Test Record Table 2 15 Self Test Error Codes Messages Table 3 2 Troubleshooting Flowcharts Figures 3 2 3 5 through 3 9 Initialization Program Listing Figure 3 17 Cable and Connector Locations Figure 3 18 Disassembly Procedures for 5 DSP Board page 3 50 Digital Signal Processor DSP Board page 4 14 Simplified Power Control DSP Circuits Figure 4 9 Parts list Tables 5 6 5 7 5 9 through 5 12 Test Points Table 6 3 Schematic Diagrams Figures 6 5 6 6 6 7 6 10 6 11 6 12 Ne Agilent Technologies Service Addendum 1 Table of Contents Addendum A SERVICE MANUA D ss ses n c inem p petet tea tee t p ERE SOE ESSES 1 Foreword oh en eA 1 Areas of DI Herencia 1 Contents 5e ne POS NRA AG tle Aig ee ee a eta EIE 2 Chapter Differences Sent Sole Sih Rete A pa ma eee 3 Chapter 2 Set Lele sde 3 Test Equipment Req ired E tp 3 Measurement Techniques icr pter say GS SL ESN IS 4 Basic Test E BSI et eh Be 4 Voltage and Current Valles uri nep dienen edP enn 5 Transient Recovery Time ks ee Re A IG ASS ee spe LS 5
10. 2mV mV 2mV 40u V PARD Ripple amp Noise Peak to Peak 0 mV 95mV 840u V RMS 0 mV 12mV 2 1mV Constant Current Tests Current Programming and Readback Accuracy Low Current set to OA outl 20mA mA 20mA 0 5 Ioui 28mA mA 28mA 200A High Current set to 8A Jout2 7 956A A 8 044A 3 3mA Readback Accuracy mA 30mA 3 3mA Current Sink Isink 1 8A Isink 48mA mA Isink 48mA 1 PARD Ripple amp Noise RMS 0 mA 2 4mA 1 8mA SAS Mode RMS 0 mA 4mA 270 0 mA 32mA 2 6mA Load Effect ImA m 1mA 3 4uA Source Effect ImA mA 1mA 3 4uA Enter your results in this column PARD Optional Test in SAS mode Program I V Curve Isc 8A 7 5 Vyp 60V 65 8 Ohms Use Fig 2 3 with scope across monitoring resistor for P P ripple or RMS voltmeter for RMS Servic e Addendum Table 2 15B Performance Test Record for Agilent Model E4351B Agilent E4351B Report No Date Test Description Minimum Spec Result Maximum Spec Measurement Uncertainty Constant Voltage Tests Voltage Programming and Readback Accuracy Low Voltage set to OV Vous 20mV mV 20mV 1 7u V Readback Accuracy 84mV mV 84mV 1 7u V High Voltage set to 120V 119 89V V 120 11V 1 7mV Readback Accuracy 180mV mV Voz 180mV 1 7mV Load Eff
11. R408 R408 R409 R410 R411 R412 R413 R413 R414 R415 R416 R417 R418 R419 R420 R421 R422 R423 R424 R425 R426 R427 R428 R429 R430 R431 R432 R433 R434 R435 R436 R437 R438 R439 R440 R441 R441 R442 R443 R444 R445 R445 R446 R447 R447 R448 R449 R450 R451 R452 Table 5 7 Parts List for Main PC Board Assembly 1 Continued Model E4350B E4351B E4350B E4350B E4351B E4350B E4351B E4350B E4351B E4350B E4351B Part Number 0699 3446 0699 3104 0757 0288 0698 0082 0698 3279 0683 2015 0698 3153 0757 0440 8159 0005 0698 6360 0698 6360 8159 0005 0698 6630 0698 6360 0698 6630 0698 6630 0698 6360 0698 6630 8159 0005 0699 0118 0698 6362 0698 6362 0699 0118 8159 0005 8159 0005 8159 0005 0699 0118 0698 6344 0698 6344 0699 0118 8159 0005 0699 0533 0698 3136 0757 0288 0699 0533 0699 0088 0698 8826 0698 3155 0757 0446 0757 0439 0698 8827 0699 0070 0698 3260 0757 0465 0757 0471 0698 0084 0698 3155 0757 0446 0698 3260 0698 6320 Description Resistor 125K 05 Resistor 250K 125W Resistor 9 09K 1 Resistor 464 1 125W Resistor 4 99K 1 Resistor 200 5 25W Resistor 3 83K 1 Resistor 7 5K 1 Resistor Zero Ohms Resistor 10K 1 Resistor 10K 1 Resistor Zero Ohms Resistor 20K 1 Resistor 10K 1 Resistor 20K 1 Resistor 20K 1 Resistor 10K 1 Resistor 20K 1 Resistor Zero Ohms Resistor 20K 1 1W Resistor 1K 1 125W Resistor 1K 1 125W Resis
12. Voltages OK Replace 5 DSP board A1D411 Conducting Check A1U408 D411 Disconnect cables from Top Tunnel boards A4A1 and A4A2 Check output control voltage at A1R638 TP36 to common TP9 y Reconnect top tunnel boarda and disconnect cables from Top Tunnel boards A4A3 and A4A4 No A1R638 approx 12mV 2 Reconnect Tunnel boards No one at a time to isolate i defective board Check A1U408 U409 No v Check A1U408 Voltage at AIR511 should be 28V Figure 3 9 Output Held High Troubleshooting Service Addendum Initialization and Factory Preset Replacement Program Listing sheet 1 10 Program to initialize EEPROM data in Models E4350B and E4351B 20 RE STORE INIT 435X 30 Rev A 00 00 dated Nov 17 1998 50 Init data 1 49 Model 6 Idn 21 60 INTEGER Aaddr 1 49 Length 1 49 70 ASSIGN Ps TO 705 Supply must be at address 705 80 CLEAR SCREEN 90 100 Eprom data addr Data address 110 DATA 2 6 10 14 18 19 20 24 28 32 120 DATA 36 37 38 42 46 50 54 55 56 57 130 DATA 64 68 72 76 80 84 88 92 96 100 140 DATA 136 137 138 139 140 142 146 148 149 150 150 DATA 151 152 153 154 155 156 157 158 160 160 170 Eprom_data_len Data for word length 180 DATA 4 4 4 4 1 1 4 4 4 4 190 DATA 1 1 4 4 4 4 1 1 1 1 200 DATA 4 4 4 4 4 4 4 4 4 4
13. 0811 3770 R713 13 104 5x 0811 3932 NO LOAD SASX J900 28 R714 NO LOAD 13 10W 5 0811 3932 muro gt gt 4900 14 R715 NO LORD NO LORD SH3 8 0 R716 NO LOAD 13 10W 5 0811 3932 PROT CLR 239007583 R721 ZK 10W 5x 0811 1873 5K 10W 5 0811 1914 R722 104 5 0811 1873 SK 10W 5 0811 1914 UMP E gt gt 1900 25 R723 220 0698 3628 200 0698 3627 8 D R725 1K 10W 5x 0811 1586 3K 10W 5 0811 1873 59 TURNS 9100 5194 102 TURNS 9100 5206 PORA oO _ FT TF TOF J900 12 SH3 8 B Figure 6 5 A1 Main Board Schematic Diagram for E4350B sheet 4 of 4
14. 2 NOT 5 11 2461 150K D424 50 LOADED 1444 5 144150 THERM HS C454 50 3 lt 6 4 DOWNPROGRAMMER UA10 mon EJE Cu CONTROL 509 R448 R513 R462 C4 2 15K 100 Hw 1 R510 R516 0451 AM U602 2 22289 4 99K 1 6 11 1 425 550 OUTPUT I DIFF AMP a PROT_CLR GLN2003A 047 R434 R431 50 lt RMINB 900 1 0 IOC 0411 R433 R436 R426 R424 4 MN lt RMOUTB My AM lt RMOUTB am 1K 1 0 1N4150 R427 R420 RMINB I SIGNAL FOR OUER CURRENT CIRCUIT IMON OUTPUT U DIFF AMP U401 R408 R403 UMON R492 Bud Y o 59740 SENSE ANN R406 3 32K 6800PF ANN eg o SENSE 100U 15 e 125K 05 R491 caos R405 ANN ANN 10K 1 Z3PF 9 09K 100U Figure 6 5 A1 Main Board Schematic Diagram for E4350B sheet 2 of 4 0416 0605 E R622 2 R621 CLAMP_CUL gt lt A DP_CONTROL 2 74 475 c C 458 FET_CONTROL LOWER_UGC lt CU_SPEEDUP 0605 R486 R487 U601 NOT LOADED NOT 1 LORDED LORDED MPSA92 MPQ2222P Y D601 12 CLAMP VOLTAGE GENERATOR Di U601 UR603 A Nu AAA R623 R624 R616 Re15 R614 100K CU PROG AAA AAA ANN MN AAA K 0 30K 1 0 100K Ax Jt D609 LU 0604 Y 150 R607 200 C604 R662 R629 MPS A42 2 1K MPsAe2 NOT LE 0UT LOADED 500 0602 150 QUT
15. 210 DATA 1 1 1 1 2 4 2 1 1 1 220 DATA 1 1 1 1 1 1 1 2 1 230 240 Eprom data 50B EEPROM data for E4350B 250 DATA 56 71 76 42 61 5 0 82 0 409 6 148 05 8 16 0 260 DATA 99 3 9 321 27 73 0 83 255 20 10 270 DATA 4350 54 39 167 436 44 167 0 10 0 10 0 65 1600 280 DATA 5 255 0 0 17 4350 0 20 160 20 290 DATA 160 156 37 98 115 15 20 0 96 300 310 Eprom data 51B EEPROM data for E4351B 320 DATA 28 36 40 96 123 0 0 0 82 0 819 2 283 57 4 08 0 330 DATA 99 3 5 121 27 140 0 83 255 20 10 340 DATA 4351 27 19 167 872 89 167 0 5 0 5 0 130 400 350 DATA 5 255 0 0 17 4351 0 20 160 20 360 DATA 160 156 37 98 115 15 20 0 96 380 Eprom_data_addr 400 FOR 1 1 49 410 READ Addr l 420 NEXT 430 440 RESTORE Eprom_data_len 460 FOR 1 1 TO 49 470 READ Length l 480 NEXT 490 500 INPUT Input the model number i e E4350B Model Figure 3 17 Initialization and Factory Preset Replacement Program Listing Sheet 1 of 3 20 Service Addendum Initialization and Factory Preset Replacement Program Listing sheet 2 510 CLEAR SCREEN 520 530 SELECT Model 540 CASE E4350B 550 RESTORE Eprom_data_50B 560 CASE E4351B 570 RESTORE Eprom data 51B 580 CASE ELSE 590 DISP Error in Model number must be E4350B or E4351B 600 STOP 610 END SELECT 620 630 FOR l 1 TO 49 Read model dependent data 640 READ Init_data l 650 NEXT 660 670 O
16. No v Troubleshoot or replace defective tunnel board Check A1U408 and D420 Disconnect cables from Tunnel boards one at a time to see if one has little or no effect Troubleshoot or replace the defective board Check Gated 9 and Shutdown circuit See Test Points 18 21 Table 6 3 and Figure 6 5 Sheet 2 Figure 3 8 Output Held Low Troubleshooting Sheet 2 of 2 18 Service Addendum Output Held High Troubleshooting f Output Held High Start ke Caution During these tests the Turn supply off and remove the top cover Disable the Overvoltage circuit by shorting A1U410 pins1 amp output may be at 2 and lifting A1R447 Turn the supply on and check hazardous levels the secondary bias and reference voltages TP s 9 through 12 See Table 6 3 Troubleshoot the defective curcuit See Fig 6 5 Sheet 1 v Program voltage and current to 1 2 full scale Check voltage at A5J722 15 TP25 and A5J722 16 TP24 to common 9 Voltages should be Load output to 596 rated current approximately 2V and check drop across emittor resistors on left boards A4A1 amp A4A2 R201 R206 R216 and on right boards A4A2 amp A4A4 R301 R306 R311 R316 to help isolate defective stage see Fig 6 6 and 6 7 A defective stage will be conducting more current Check if OR gate diode A1D411 is conducting
17. Resistor 14 7K 1 Resistor 1K 1 125W Resistor 130K 1 Resistor 1K 1 125W Resistor 220 5 2W MO Resistor Zero Ohms Resistor Zero Ohms Resistor Zero Ohms Resistor Zero Ohms Insulator Ref Q205 Screw Mach M3x0 5x16mm pan head Ref Q201 Q203 Q205 Q207 Transistor Socket Ref Q201 Q203 Q205 Q207 Washer helical lock Ref Q201 Q203 Q205 Q207 Service Addendum 39 Reference Designator A4A2 A4 C301 C302 C303 C304 0307 40 Table 5 12 Parts List for Right Tunnel Boards 4 2 amp A4A4 Part Number Description 5063 4816 Right Tunnel Board 0160 4801 Capacitor 100PF 5 0160 4801 Capacitor 100PF 5 0160 4801 Capacitor 100PF 5 0160 4801 Capacitor 100PF 5 0160 4835 Capacitor 1UF 10 50V 0160 4835 Capacitor 1UF 10 0160 6838 Capacitor 2200pf IKV 1901 0050 Diode 1901 0050 Diode 1901 0050 Diode 2110 0297 Fuse 5A 125V 2110 0297 Fuse 5A 125V 2110 0297 Fuse 5A 125V 8159 0005 Resistor Zero Ohms 8159 0005 Resistor Zero Ohms 8159 0005 Resistor Zero Ohms 8159 0005 Resistor Zero Ohms 1251 4245 Connector 2 pin 1251 8184 Mod Phone Receptacle 1251 4781 Connector 1855 0849 FET 1855 0849 FET 1855 0849 FET 1855 0849 FET 0811 3989 Resistor 1 5 1 3W 0698 3430 Resistor 21 5 1 0698 3156 Resistor 14 7 1 0757 0280 Resistor 1K 1 125W 0757 0473 Resistor 221K 1 0811 3989 Resistor 1 5 1 3W 0698 3430 Resistor 21 5 1 0698 3156 Resistor 14 7K 1 0757 0280
18. 4 6V turn on default TP42 405 5 OV circuit sheet 2 4 5V with full scale voltage programmed OV with zero volts programmed TP43 U405 7 OV circuit sheet 2 5V no OV condition TP44 R510 Therm HS sheet 2 3 2V with heatsink 23C voltage decreases as temperature increases TP45 D430 OC circuit sheet 2 5V with no overcurrent condition anode TP46 D407 OC circuit sheet 2 0 45V with no overcurrent condition cathode 2 3V in OC Protect 44 Service Addendum Table 6 3 Test Points continued Test Point Signal Measurement and Conditions A4A1 A4A3 LEFT TUNNEL BOARDS FIGURE 6 6 Leave meter or scope common connected to test point 9 when taking measurements at test points 47 through 64 The measurements were taken with full scale voltage and current programmed The measurements were made first in the CV mode with no load and then in the CC mode with the load set for full scale voltage and current Test points are listed for the first regulator closest to fan and the last regulator stages only The number of regulator stages that will be on conducting depends upon the output current In the CV mode with no load connected no output current only one or two stages will be on conducting current through the down programmer stages The remaining regulator stages will be off not conducting In the CC mode with the load set for full scale output voltage and current all regulator stages will be on
19. CC RMS Noise Measurement Test Setup 5 Performance Test Record ass li 6 Chapter 3 Differences Sea NA 8 Signature Amal ysis ied eta ERR E esi ett gut ides TT TTA TE beetle re s aste Ete TIPO 8 Self Test Etror Codes Messages AAA ee ose sb e des gehe 8 Overall Troubleshooting sheet 1 e 9 Overall Troubleshooting sheet 2 sss bete ro tee GA VN 10 Overall Troubleshooting sheet 3 eescesccecssecesececsseceseeecsaeceneecsaececeeceaeceneecsaececeecsaeceeeesseeeeaeecaeeeeatecaeeesnees 11 Overall Troubleshooting sheet 4 uuu enne enne nennen trennen teen ene entren eene enne enne 12 Overall Troubleshooting sheet 5 eeessesscecsseceeccecssecesneeceacceseeecsaeceeeecsaeceeeecsaeceseeecsaeceeeessececaeecsaeeeeaeecsasensaees 13 Flow Charts inet ue A A t i o RE ete decidi a Pet ove eet 13 No Display Troubleshooting sss sa tecti enden d tek i PUR unik Pe ERE TRE e ERR eiua ese 14 OV Will Not Fire Troubleshooting 15 OV at Turn On Troubleshooting oret te ettet eiit teet iii 16 Output Held Low Troubleshooting sheet 1 17 Output Held Low Troubleshooting sheet 2 eese nennen nein nennen rennen enne 18 Output Held High Fro bleshooting Rieti ete bete fte d esca p o bod dediti cie bietet 19 Initialization and Factory Preset Replacement Program Listing
20. IF Err THEN PRINT An error occurred during the EEPROM read write Check for PRINT programming errors Initialization data may be incorrect PRINT Operation complete Program stopped STOP 1190 Ps_error Error handling subroutine 22 OUTPUT Ps SYST ERR Check for errors ENTER Ps Err RETURN Figure 3 17 Initialization and Factory Preset Replacement Program Listing Sheet 3 of 3 Service Addendum Cable and Connector Locations A2 GPIB Board Adapter PCA A7 Phone PCA A3 Front Panel Board Figure 3 18 Cable and Connector Locations for E4350B E4351B Service Addendum 23 DSP Board To remove the A5 DSP Board proceed as follows e Remove the top cover of the power supply as described under Top Cover Removal and Replacement e Remove the six screws that attach the cover to the DSP board use T10 TORX drive e Disconnect both cables going to the GPIB board Note sure to mark any or all cables prior to removal so that no mistake is made later when reinstalling these cables e Disconnect the ribbon cable located at the end of the DSP board e Remove the two screws that attach the DSP board to the left side of the chassis Use a T10 TORX drive e Lift the DSP board together with its mounting bracket out of the chassis e Disconnect the cable going to the front panel board e Turn the D
21. discussed in chapter 4 Service Addendum 25 15 ircui Simplified Diagram of DSP C 1 l 1 l 1 1 1 1 1 1 1 1 l 08 1 9eZn own 1 l av 3044 22 9921 2921 l 45 td 1 WEY 1 UV 1 E 1 1 1 l luz is si ss mas Amo sum lema nm nue am ci kt o A mem mo Se duy oe Cee EPL a FA da l aoyo ren U 7074 veorn 9074 0L i I MM 1679 vsorn 8078 SVS 8807 duy 10102 AOL 10400 AD tery 5 1 meus 40JD n32y SALAS mur juan 55040 A 2098 006 sopu 574 2098 Ajquiessy yulg 88H O d 705 1040 22 ced quang nding dE i c 9b sys 0 4 9evO T vor OLvH A MW ircuits Figure 4 9 Simplified Power Control DSP C Service Addendum 26 Chapter 5 Differences Table 5 6 Parts List for E4350B E4351B Chassis Reference Designator Model Al E4350B Al E4351B A2 A3 A4A2 amp A4A4 W14 18 W19 W20 Front Panel Logo Fro
22. display but output No PCLR test points 1 4 Table 6 3 and OK cable W9 Yes Turn off supply remove front panel assembly to access circuits on the A3 front panel board Turn on the supply Check 5V bias at R1 6 display voltages 1 1V at R1 14 2 2V at R1 2 and 3 3V at R1 16 meter common at R1 3 See Fig 6 4 5 Check A3CI Display and bias No AGRI and A3RTI i voltages OK 9 Program voltage current fron the front panel Measure the voltage at the output terminals In case the output is disabled Yes press the output ON OFF key while y observing the output with an external Check 10MHz Clock signal at voltmeter A3J2 9 See Fig 6 9 Yes A3U3 A3U4 or A3U8 defective Perform Check A3Y1 front panel SA See No Output ora present Display and bias No and Table 3 4 voltages OK A3U3 2 Yes Y LCD or cable W19 defective Figure 3 5 No Display Troubleshooting 14 Service Addendum OV Will Not Fire Troubleshooting OV Will Not Fire A Start 4 Turn off supply and remove top cover Turn on and check secondary bias and reference voltages Test Points 9 through 17 Table 6 3 Troubleshoot the appropriate Voltages OK defective circuit Yes Y Program voltage and current to full scale and OV to 1 2 full sca
23. ge 000000000000 I 9 99 Figure 6 11 Adapter Board Schematic Diagram P7154 gt P715 9 ease P715 10 15 5 gt _ P215 11 715 122 715 5 gt P2154 22 P715 6 gt _ P715714 1 715 7 715 15 P715 8 P2715 160 V 0502 p 6 KH 5 V PALS 0000000 00000000 J501 O Figure 6 12 A7 Phone Adapter Board Component Location and Schematic Diagram
24. troubleshooting 5 722 31 Therm Heatsink Replace 5 DSP board 2 23C OT displayed No y Check 5V Ref A1R510 right tunnel board Go to Sheet 5 A4RT301 10K E 230 Figure 3 2 Overall Troubleshooting sheet 4 of 5 12 Service Addendum Overall Troubleshooting sheet 5 From Sheet 4 OV amp OC displayed OV displayed OC displayed No Y RI Remote Inhibit displayed Check for short between A2TB101 and ground Programmable OCP tripped Check OC circuits AIU405 U411 Imon amp A1U403 and PROG signal at A5J722 26 41 Go to OV at Turn On troubleshooting Check if OCP is enabled at turn on and current is programmed to zero Check current circuit Figure 3 2 Overall Troubleshooting sheet 5 of 5 Flow Charts The flow charts shown in Figures 3 10 through Figures 3 14 and Figure 3 16 are not used in troubleshooting the Solar Array Simulator Note that there are no changes to the flow chart in Figure 3 15 Service Addendum 13 No Display Troubleshooting No Display Start Turn on the supply and try to program it from the front panel While measuring the voltage at the output terminals program the voltage and current to full scale Toggle the ON OFF key while observing the external voltmeter Check the A2 GPIB board bias circuits No
25. 0 0297 8159 0005 8159 0005 8159 0005 8159 0005 8159 0005 8159 0005 8159 0005 8159 0005 8159 0005 8159 0005 0340 0458 0515 0064 1200 1158 2190 0584 Description Bottom Left Tunnel Board Capacitor 100PF 5 Capacitor 100PF 5 Capacitor 100PF 5 Capacitor 1UF 10 50V Capacitor 1UF 10 50V Capacitor 1UF 400V Capacitor 2200pf IKV FET FET Transistor FET Resistor 14 7K 190 Resistor 14 7K 1 Resistor 14 7K 1 Resistor 21 5 196 Resistor 21 5 1 Resistor 21 5 1 Resistor 287K 1 Resistor 220 5 2W MO Resistor 1K 1 125W Resistor 1K 1 125W Resistor 1K 1 125W Resistor 130K 1 Resistor 1 5 1 3W Resistor 1 5 1 3W Resistor 1 5 1 3W Connector Modular Phone Rcpt Diode Diode Diode Fuse 5A 125V Fuse 125V Fuse 125V Resistor Zero Ohms Resistor Zero Ohms Resistor Zero Ohms Resistor Zero Ohms Resistor Zero Ohms Resistor Zero Ohms Resistor Zero Ohms Resistor Zero Ohms Resistor Zero Ohms Resistor Zero Ohms Insulator Ref Q205 Screw Mach M3x0 5x16mm pan head Ref 0201 0203 0205 0207 Transistor Socket Ref Q201 Q203 Q205 Q207 Washer helical lock Ref 0201 0203 0205 0207 Service Addendum 41 Table 5 13 Parts List for DSP Board 5 Reference Designator Part Number AS 5063 4811 5080 2559 5080 2560 Description DSP Board ROM High ROM Low Table 5 14 Parts List for Adapter PC Assembly A6 Reference Designator Part Number A6 5063 4852 0160 4833
26. 0160 7606 0160 4845 0160 4355 0180 4129 0180 4129 0160 4830 0160 6804 0160 6896 0160 6896 0160 4834 0180 4132 0180 3458 0180 3458 0180 3458 0160 5422 0160 4904 0160 5469 0180 4263 0180 4311 0180 4263 0180 4311 0180 3497 Description Capacitor 047 uF 20 Capacitor 10pF 5 100V Capacitor 047 uF 20 Capacitor 01UF 10 Capacitor OluF 10 Capacitor 1500pF 100V Capacitor 047 uF 20 Capacitor luF 35V Capacitor 47pF 5 100V Capacitor 4700pF 1096 Capacitor 22pF 5 100V Capacitor OluF 10 Capacitor 01uF 10 Capacitor luF 400V Capacitor 047uF 250V Capacitor 4 7pF Capacitor 047 uF 20 Capacitor 047 uF 20 Capacitor 120pF 5 Capacitor 047 uF 20 Capacitor 100pF 5 Capacitor 2 2uF 20V Capacitor luF 10 50V Capacitor 120pF 5 Capacitor 2200pF 20 Capacitor 2200pF 20 Capacitor 275V Capacitor 6800pF 20 Capacitor OluF 10 Capacitor luF 35V Capacitor luF 35V Capacitor 2200pF 1096 Capacitor 047uF 250V Capacitor0 015uF 400V Capacitor 0 015uF 400V Capacitor 047uF 1096 Capacitor 6 8uF 35V Capacitor 4700uF 50V Capacitor 4700uF 50V Capacitor 4700uF 50V Capacitor 047 UF 2096 Capacitor 6800pF 596 Capacitor luF 10 50 Capacitor 4000uF 125V Capacitor1200UF 250V Capacitor 4000uF 125V Capacitor1200UF 250V Capacitor 6800uF 16V Service Addendum Reference Designator C722 C722 C723 C724 C725 CR700 D401 D402 D403 D404 D405 D406 D407 D408 D409 D410 D411 D413 D415 D416 D417 D418 D419 D
27. 20 R621 R622 R623 Table 5 7 Parts List for Main PC Board Assembly A1 Continued Model E4350B 4351 4350 4351 4350 4351 4350 4351 4350 4351 4350 4351 4350 4351 Part Number 0757 0442 0757 0429 0698 3160 0757 0442 0757 0444 0757 0280 0698 3279 0757 0430 0757 0401 0757 0401 0757 0284 0757 0284 0698 0084 0699 1797 0757 0419 0757 0470 0757 0442 0757 0472 0698 8826 0698 3156 0757 0427 0757 0465 0698 4037 0757 0407 0698 4037 0757 0407 0698 4037 0757 0407 8159 0005 0757 0463 0757 0463 0698 0082 0757 0280 0698 6358 0757 0463 8159 0005 0757 0463 0698 6358 8159 0005 0698 6629 0698 6977 0698 6358 0698 5454 0698 8826 0699 1972 0698 6977 0698 6358 0757 0442 0757 0415 0757 0281 0698 5454 Description Resistor 1 125W Resistor 1 82K 1 Resistor 31 6K 1 Resistor 10K 1 125W Resistor 12 1K 1 Resistor 1K 1 125W Resistor 4 99K 1 Resistor 2 21K 1 Resistor 100 1 125W Resistor 100 1 125W Resistor 150 1 125W Resistor 150 1 125W Resistor 2 15K 1 Resistor 5 25W Resistor 681 1 125W Resistor 162K 1 Resistor 10K 1 125W Resistor 200K 1 Resistor 825K 1 Resistor 14 7K 1 Resistor 1 5K 1 Resistor 100 1 Resistor 46 4 1 Resistor 200 1 125W Resistor 46 4 1 Resistor 200 1 125W Resistor 46 4 1 Resistor 200 1 125W Resistor Zero Ohms Resistor 82 5K 1 Resistor 82 5K 1 Resistor 464 1 125
28. 420 D421 D422 D423 D424 D425 D426 D427 D428 D429 D430 D431 D601 D602 D603 D604 D605 D606 D607 D608 D609 D700 D701 D702 D703 D704 D705 Table 5 7 Parts List for Main PC Board Assembly A1 Continued Model E4351B E4350B E4350B Part Number 0180 4311 0180 4263 0160 0168 0160 5422 0160 5422 5060 3376 1901 0033 1901 0033 1901 0033 1901 0033 1901 0033 1901 1128 1901 1128 1901 0033 1901 0033 1901 1098 1901 1098 1901 1098 1901 0518 1901 0050 1901 0050 1901 0033 1901 1098 1901 1098 1901 1098 1901 0050 1901 0050 1901 1098 1901 1098 1901 0050 1901 0050 1901 0731 1901 0731 1901 0050 1901 0050 1901 0050 1901 0050 1901 0050 1901 0050 1901 0050 1901 0731 1901 0050 1901 0050 1901 1214 1901 1098 1901 1098 1901 0719 1901 0719 1901 0719 1901 0719 Description Capacitor 1200UF 250V Capacitor 4000uF 125V Capacitor luF 10 Capacitor 047 uF 20 Capacitor 047 uF 20 SCR Diode Assembly Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Service Addendum 31 Reference Designator D706 D707 D709 D710 D711 32 Table 5 7 Parts List for Main PC Board Assembly 1 Continued Model E
29. 4350B E4351B E4350B E4351B E4350B E4351B E4350B E4350B E4351B Part Number 1901 1098 1901 0992 1906 0383 1901 1087 1901 1087 1901 0050 2110 0685 2110 0685 2110 0688 2110 0697 2110 0697 1251 4781 1251 4781 1251 7616 1252 3771 1251 4246 1251 4245 1252 3693 1251 8184 1251 8184 1251 8184 1251 8184 06652 00005 06652 00005 1251 8601 5080 2321 5060 3250 1855 0727 1853 0281 1854 0872 1853 0336 1853 0336 1853 0336 1853 0336 1854 0575 1855 0727 5060 3322 1854 0477 0698 3153 0757 0440 0698 6320 0698 6360 0698 6320 0698 6360 0698 5454 0757 0288 0699 3446 0699 3104 0698 5454 Description Diode Diode Full Wave Rectifier Diode Diode Diode Fuse Subminiature 7A Fuse Subminiature 7A Fuse 125V Fuse Subminiature 15A Fuse Subminiature 15A Connector Connector Connector AC Line Module Connector TP Connector 2 pin Connector Modular Phone Rept Modular Phone Rept Modular Phone Rept Modular Phone Bus Bar Bus Bar Connector TP Output Choke Transistor Heatsink Assy MOSFET Transistor Transistor Transistor Transistor Transistor Transistor Transistor MOSFET Transistor Heatsink Assy Transistor Resistor 3 83K 1 Resistor 7 5K 1 Resistor 5K 1 125W Resistor 10 1 Resistor 5K 1 125W Resistor 10 1 Resistor 9K 1 125W Resistor 9 09K 1 Resistor 125K 05 Resistor 250K 125W Resistor 9K 1 125W Service Addendum Reference Designator
30. 5 DSP Board Connect meter or scope common to Test Point TP 9 when taking measurements at Test Points 10 through 46 TP9 R703 3 Secondary common sheet 1 R703 3 RmINB TP10 F703 5V Sec Bias sheet 1 5V 0 2V TP11 R704 15 Sec Bias sheet 1 15 0 6V TP12 Q700 24V sheet 1 21V to 27V 1V ripple heat sink TP13 R708 15V Sec Bias sheet 1 15V 1V TP14 U701 2 25V sheet 1 22V to 28V 300mV ripple TP15 U702 3 Fan speed control sheet 1 3V with no load connected and ambient temperature 25C TP16 D701 Fan speed control sheet 1 2 95V with no load connected and ambient temperature anode 25C TP17 U603 5 PCLR DSP Board sheet 3 Goes low for approximately 40mS at power on then goes high 5V TP18 U603 7 _ Shutdown circuit sheet 3 8 69V with output on TP19 U602 16 Shutdown circuit sheet 3 0 7V with output off 15 2V with output on TP20 VR602 9V Gated sheet 3 9V anode TP21 D606 15V Gated sheet 3 14 2V anode TP24 R421 CC_Prog sheet 2 4 2V approximate with full scale current programmed TP25 R623 CV_Prog sheet 2 4 3V approximate with full scale voltage programmed Service Addendum 43 Table 6 3 Test Points continued Test Point Signal Measurement and Conditions The measurements at test points 26 through 39 were taken with full scale voltage and full scale cur
31. 9 R230 R232 R233 Table 5 11 Parts List for Top Left Tunnel Board A4A1 Part Number 5063 4818 0160 4801 0160 4801 0160 4801 0160 4801 0160 4835 0160 4835 0160 6838 0160 4812 1901 1098 1901 0050 1901 0050 1901 0050 2110 0297 2110 0297 2110 0297 2110 0297 8159 0005 8159 0005 8159 0005 8159 0005 1251 8184 1251 4781 1855 0849 1855 0849 1854 0989 1855 0849 5060 3250 0811 3989 0698 3430 0698 3156 0757 0280 0811 3989 0698 3430 0698 3156 0757 0280 0698 3456 0757 0316 0698 344 1 0698 0085 0698 4503 0811 3989 0698 3430 0698 3156 0757 0280 0757 0468 0757 0280 0698 3628 8159 0005 8159 0005 8159 0005 8159 0005 0340 0458 0515 0064 1200 1158 2190 0584 Description Top Left Tunnel Board Capacitor 100PF 5 Capacitor 100PF 5 Capacitor 100PF 5 Capacitor 100PF 5 Capacitor 1UF 10 50V Capacitor 1UF 10 50V Capacitor 2200pf IKV Capacitor 220PF 5 Diode Diode Diode Diode Fuse 0 5A 125V Fuse 0 5A 125V Fuse 0 5A 125V Fuse 0 5A 125V Resistor Zero Ohms Resistor Zero Ohms Resistor Zero Ohms Resistor Zero Ohms Modular Phone Connector FET FET Transistor FET Transistor Heat Sink Assy Resistor 1 5 1 3W Resistor 21 5 1 Resistor 14 7K 1 Resistor 1K 1 125W Resistor 1 5 1 3W Resistor 21 5 1 Resistor 14 7K 1 Resistor 1K 1 125W Resistor 287K 1 Resistor 42 2 1 Resistor 215 1 125W Resistor 2 61K 1 Resistor 66 5K 1 Resistor 1 5 1 3W Resistor 21 5 1
32. 99009 5 fo l o o ajo 62 1 2 54 SIDS Nw 2 c MIC ICU CUCU uo AUS NE NE NE SE YAO 06 OJoe joe jo 6566065650000 J411 00000000 2 A Wu bj O 7030 OO DN E Figure 6 5 A1 Main Board Assembly Diagram and Test Points for E4350B FUSE VALUES 158 128 FOR FOR 100UAC 120VAC 7A FOR 220UAC 7A FOR 240UAC 2200PF 2500 R700 1M 5x 1744 XF450 C702 1 2750 C701 2200PF 250V J411 3 gt MAN Jet 4000 4000 P101 I mi HPIB IBOARD 0710 i 125 1250 J405 1 J405 2 J600 1 J601 1 FAN 601 2 J600 3 lt _ J600 2 lt 0705 R709 C711 047 36K 1 1000 E 15 C724 047 500 FAN_PROG gt FAN CONTROL CIRCUIT 1N4150 7 XZD701 1N4150 2A R707 19K 14 0UT INB C 0UT R703 025 2x 710 c703 2500 015 4000 00 222 OUT AIRMOUTB 2000 e H E r T3CR700 10H or LOADED LOADED L R716 KJ IHS708 E 104 8725 oe i C717 2724 LOADED i oj D708 gt 464 10 ZN E 1 2 R702 5R701 OUTPUT 3 3 10M I HU S
33. Addendum SERVICE MANUAL Agilent Technologies Model E4350B and E4351B Solar Array Simulators P N 5962 8233 For units with serial numbers E4350B US37410101 and up E4351B US37430101 and up Foreword This addendum contains information for troubleshooting and repairing the Agilent E4350B and E4351B Solar Array Simulators The standard Service Manual for the Agilent Series 665xA DC Power Supplies P N 5959 3376 together with this Service Addendum is shipped with the Solar Array Simulators when ordered with Option 910 Note This addendum is to be used along with the standard Service Manual for the Agilent Series 665xA DC Power Supplies When troubleshooting the Agilent E4350B E4351B Solar Array Simulators start by following the procedures outlined in the standard Service Manual This addendum documents only the differences between the standard troubleshooting procedures and the troubleshooting procedures for a Solar Array Simulator Areas of Difference From a service point of view the main difference between the SAS unit and the Agilent Series 665xA dc power supply is the addition of a Digital Signal Processor DSP board located over the main A1 board This DSP board includes the portions of CV CC OV and OC control circuits such as the programming DAC circuits as well as a microprocessor and programmable gate array that is used to generate the output I V curve The output I V curve simulates the output characteristics of a solar array
34. E4351B REF J6902 6912 E4351B REF 690 691 E4351B S610 J401 J402 Seses 4 AE EE 408 Part Number 0686 2225 0811 3932 0811 3932 0811 3932 8159 0005 0811 2568 0757 0280 0757 0279 0811 1873 0811 1914 0811 1873 0811 1914 0698 3628 0698 3627 0698 0082 0811 1586 0811 1873 8159 0005 0757 0280 0699 4707 0757 0419 0515 0383 1205 0862 0515 0383 1205 0862 3050 0891 0535 0031 2 190 0586 0515 0909 570 0647 0535 0031 3050 0891 2190 0586 0515 0909 3101 2894 1826 1533 1826 1533 1826 2252 1826 1533 1826 0412 1858 0077 1826 0175 1826 1533 1826 1533 1990 1502 1820 3081 1826 1895 1858 0077 1858 0047 1826 0412 Description Resistor 2 2K 5 5W Resistor 13 10W Resistor 13 10W Resistor 13 10W Resistor Zero Ohms Resistor 1 1 3W PWI Resistor 1K 1 125W Resistor 3 16K 1 Resistor 3K 5 10W PW Resistor 5K 5 10W PW Resistor 3K 5 10W PW Resistor 5K 5 10W PW Resistor 220 5 2W MO Resistor 200 5 2W MO Resistor 464 1 125W Resistor 1K 5 10W PW Resistor 3K 5 10W PW Resistor Zero Ohms Resistor 1K 1 125W Resistor 25 Ohm Resistor 681 1 125W Machine Screw Heat Sink Machine Screw Heat Sink Flat Washer Hex Nut w Lock Washer Helical Lock Washer Machine Screw STUD STD PRS IN NUT HEX W LKWR WSHR FL MTLC WSHR LK HLCL SCR MACH MAX 07 Push Button Switch DPDT Integrated Circuit Integrated Circuit Integrated Circuit Integrated Circuit Integrated Circ
35. E4351B Cover Term Block Knob Base Round Pushbutton Threaded Stud Screw M3x0 5 Screw Machine Screw M4x0 7 Screw Machine Screw M4x0 7 Screw Machine Screw M5x0 8 Screw Thd Rlg Screw Torx 10 Nut Hex W Lkwr Nut Hex Nut Self Thd Cover Top Heatsink Shroud Heatsink Jumper Assembly 27 Table 5 6 Parts List for E4350A Chassis Mechanical continued Reference Designator Part Number Ref Display 1000 0842 Ref A2TB101 1252 1488 Ref A1J640 1252 3698 Ref Ac Bias Tunnel Cables 1400 0493 Ref Front Bracket 1400 0528 Ref Ac Pwr Tunnel 1400 1281 Ref Rear Panel Ground 1510 0044 Ref GPIB Board 1531 0309 Ref F450 2110 0927 2190 0016 2190 0034 Ref AC Ground 2190 0646 2950 0043 Ref GPIB Connector 3050 0849 5001 0539 5001 6734 5001 6740 5001 6748 5001 6771 5001 9819 5040 1665 5040 1666 5040 1667 5040 1697 5040 1703 5041 8801 5041 8819 5041 8820 5062 3704 Ref Serial Link Cable 5080 2148 5959 3376 5960 5597 5961 2579 5962 8206 Ref A5 DSP Board E4350 00001 Ref A5 DSP Board E4350 00002 Front Panel Logo E4350 80003 Front Panel Logo E435 1 80002 28 Service Addendum Description Window Terminal Block 4 Pos Connector Cable Tie Mount Cable Tie Clip Cable Binding Post Single Clevis Fuseholder W Cap Washer Lk Intl T Washer Lk Hlcl Washer Lock Nut Hex Dbl Cham Washer Fl Mtlc Trim Sides Front Panel Bracket GPIB Front Panel Rear Panel Chassis Keypad Heat Sink Rail Heat Sink Bumper Block Top Cover F
36. LL RESISTORS ARE IN OHMS 1 1780 SEM 2 ALL CAPACITORS ARE IN MICROFARADS 3 0301 303 305 307 ARE SITTING ON SAME HEATSINK IN THE FOLLOWING ORDER FROM FAN 0501 303 305 C305 307 10 1 500 C30 10 1 500 Y 5 150 Figure 6 6 A4A1 A4A3 Left Tunnel Circuit Schematic Diagram for 43508 RAIL J202 1 G 9U A F201 0 5A 5 J201 HS 4 HS 4 TELE CONTROL 5 90 T 2 15U 3 em 0208 la zi NOT 4 TUN COM LED 339202 LOADED e 5 GATED 90 R207 HOPE 217 ik Sand sla E200PF POS 6 DP CONTROL lao N 1 21 5 MTP3055 5 E 2 54072 4 24072P 1 4 MsFTO028d 2 0 58 6 15U 56 150 ER RODA fre 220 D205 D203 5x F206 gt C204 eH 5 R218 KERA 00PF Toop 14 7K R219 1K R220 130K Ps R216 1 5 1 34 G 9U lt J202 3 00 INB C209 0 1 4600 LOADED R211 8 3 74 2u G 9U R223 205 237 A 1 44 Bad NOT LOADED C206 R231 500 R22p Ar 1K 0 TO 6 154 9206 5 PREVENT n MISLORDING DP CONTROL MJE15031 2 14 4 EN E 205 NOTE UNLESS OTHERWISE SPECIFIED HS 1 ALL RESISTORS ARE IN OHMS _ 1 1 84 2 ALL CAPACITORS ARE IN MICROFARADS 0201 203 205 207 ARE SITTING ON SAME HEATSINK IN THE FOLLOWING ORDER FROM FAN 0201 203 205 207 0205 SHALL BE ISOLATED F
37. NUBBER DUT 1744 lt 1744 C704 01 R727 E411 1 E412 NOTES RAIL 1 INDICATES VALUE CHANGE FOR 60 120U MODELS SEE SHEET 4 FOR VALUE amp HP PART NUMBER R717 2 UNLESS OTHERWISE SPECIFIED ALL RESISTORS ARE IN OHMS 1 1789 0 3 UNLESS OTHERWISE SPECIFIED ALL CAPACITORS ARE IN MICROFARADS L700 R718 MN 100uH 1 NOT LOADED R706 111 1K 1 D703 R728 F701 0702 25 5 78 EN 150 REGULATOR 15U D700 1N4150 R708 AAA 0 54 SWITCHING REGULATOR IHS703 5U 1250 R720 3 16K MS R719 1K Figure 6 5 A1 Main Board Schematic Diagram for E4350B sheet 1 of 4 UMP ES 150 NOT LOADED R418 R420 VOLTAGE FEEDBACK 4134072P 15V R423 FREQUENCY COMPENSATION SENSE CC PROGE 50 C452 8517 uy UE 5 lt 1744 nv OUT R485 gt NNV SAS 21 5K FILTER CAPS FOR 0408 U402 0405 0409 150 150 150 150 C441 C407 C411 C442 047 047 047 047 500 500 500 500 0443 C408 C429 C448 047 047 047 047 500 500 500 500 150 150 150 150 C457 R521 NW DUT espe 4990 NEG Tim LIMIT CIRCUIT D433 DP CONTROL SEE R511
38. ROM HEATSINK S NOT LOADED ON LOWER TUNNEL BOARD 6 NOT LOADED ON UPPER TUNNEL BOARD RAIL 202 2 Figure 6 7 A4A2 A4A4 Right Tunnel Circuit Schematic Diagram for E4350B AA P722 m VMon o O 02 50 _ o 2 3 7 020 O ko oP Therm HS O 08 ig 1 34 9 2B 933 DO UNRe 20 205 12 ovs 40 Note difference O in J722 P722 O and J 2UP721 B pin orientation 150 920 o9 To A6 P721 Figure 6 10 5 DSP Board Test Points P722 Pet P722 1 PURI DD FM P722 3 gt P722 4 gt P722 5 P722 6 P722 7 P722 8 P722 9 J900 13 gt 900 52 P222 10 50 P222 15 REF J900 21 P722 1 LC 3900 22 900 15 722 1 P722 1 J900 30 P722 16 gt J900 31 P222 12 900 16 P722 1 USE A HEAVIER TRACK L P722 19 J900 18 P722 20 gt USE HEAVIER TRACK 5390051 e 7 2 gt ES P722 22 gt Lg 11 P722 23 P722 2 UMP_DAC 4900 17 P722 2 2 SUREF eee P722 20 gt USE A HEAVIER TRACK NE P722 22 150 amp 50 REF COM v P722 2 cg 1900 9 722 29 pe J900 19 P222 30 1000 J900 10 P722 32 P722 33
39. Resistor 1K 1 125W 0757 0465 Resistor LOOK 1 0811 3989 Resistor 1 5 1 3W 0698 3430 Resistor 21 5 1 0698 3156 Resistor 14 7K 1 0757 0280 Resistor 1K 1 125W 0757 0460 Resistor 61 9K 1 0811 3989 Resistor 1 5 1 3W 0698 3430 Resistor 21 5 1 0698 3156 Resistor 14 7K 1 0757 0280 Resistor 1K 1 125W 0757 0458 Resistor 51 1K 1 0698 3628 Resistor 220 5 2W MO 8159 0005 Resistor Zero Ohms 8159 0005 Resistor Zero Ohms 8159 0005 Resistor Zero Ohms 8159 0005 Resistor Zero Ohms 06652 60006 Thermistor Assembly 0515 0064 Screw Mach M3x0 5x16mm pan head Ref Q301 Q303 Q305 Q307 1200 1158 Transistor Socket Ref Q301 Q303 Q305 Q307 2190 0584 Washer helical lock Ref Q301 Q303 Q305 Q307 Service Addendum Reference Designator 201 202 204 205 206 209 208 0201 0203 0205 0207 R203 R208 R218 R202 R207 R217 R210 R224 R204 R209 R219 R220 R201 R206 R216 J202 J201 D203 D204 D205 F201 F202 F203 F205 F206 F207 R229 R230 R231 R232 R233 R234 R235 Table 5 11 Parts List for Bottom Left Tunnel Board A4A3 Part Number 5063 4820 0160 4801 0160 4801 0160 4801 0160 4835 0160 4835 0160 6806 0160 6838 1855 0849 1855 0849 1854 0989 1855 0849 0698 3156 0698 3156 0698 3156 0698 3430 0698 3430 0698 3430 0698 3456 0698 3628 0757 0280 0757 0280 0757 0280 0757 0468 0811 3989 0811 3989 0811 3989 1251 4781 1251 8184 1901 0050 1901 0050 1901 0050 2110 0297 2110 0297 211
40. SP board over and remove the screws that attach the DSP board to the mounting bracket 24 Service Addendum Chapter 4 Differences Digital Signal Processor DSP Board The DSP board replaces the Secondary Interface section of the A1 Main PC board It replaces the Secondary Microprocessor U504 the CV and CC programming DACs Readback D A DAC Reference Readback Comparators and the Fan and Overvoltage PWMs It replaces everything found in Figure 6 5 sheet 3 plus the OV filter buffer U603 found on sheet 2 The DSP board contains the new Secondary Microprocessor circuits the CV OV OC and Fan DAC s The readback circuits and the secondary ROM and RAM When operating in the Fixed mode the instrument acts like a normal power supply with typical crossover characteristics between CV and CC operation When in SAS mode the customer specified I E operating curve is entered into the secondary RAM where it is used to modify the supply s crossover characteristics Troubleshooting is to be performed in the Fixed turn on default mode only See Figure 6 10 for the A5J721 A5J722 connector DAC and Bias voltage pin outs Note The DSP board is available as a replacement assembly only It is not intended to be repaired to the component level The following figure is a simplified diagram that shows the circuits located on the DSP board also referred to as the Secondary Interface in relation to the Output Power and Control circuits previously
41. TP25 and 5 722 16 TP24 with respect to commmon TP9 output with an external DMM to insure the problem Voltages OK 7 Yes y Check if CV CC OR Gate diodes A1D441 or D413 are conducting Replace AS DSP Board Caution During these tests the output may be at hazardous levels A1D411 Conducting No A To Sheet 2 v Check Vmon voltage at A1U401 7 TP33 to common TP9 A1D411 Conducting No y CV Comparator A1U408 VMon Amp A1U401 defective Figure 3 8 Output Held Low Troubleshooting Sheet 1 of 2 Service Addendum 17 Output Held Low Troubleshooting sheet 2 From Sheet 1 A1D413 Conducting ji Yes Y Check IMon voltage at A1U403 7 TP28 to common TP9 Check voltage at 10408 3 and R686 TP36 to common TP9 A1U408 3 Neg 2 A1R638 gt 12mV 7 Yes y A1D413 Conducting 7 Y CC Comparator A1U403 defective IMon Amp A1U403 defective Gross Current Limit circuit A12U409 defective Check A1U408 D420 loading of voltage by Tunnel Circuits Check if supply operates OK with no load but cannot get full scale output with load connected Disconnect cables from tunnel boards A4A1 A4A4 one at a time to see if output rises Partial output attained No Y Output Rises
42. UTPUT Ps CLS Clears power supply registers 690 OUTPUT Ps CAL STATE ON Turn on cal mode 0 passcode 710 GOSUB Ps error Error if passcode is not 0 720 IF Err THEN 730 OUTPUT QPs IDN Get data from model location 740 ENTER Ps ldn 750 Model VAL Idn POS Idn 2 ELSE 770 GOTO Start 780 ENDIF 790 800 OUTPUT Ps CAL STATE ON Model Turn on cal mode passcode 810 data at model number location 820 830 GOSUB Ps error Error if passcode is not same as 840 data at model location 850 IF Err THEN 860 OUTPUT Ps CAL STATE ON Model 1 4 Turn on cal mode passcode 870 model 880 GOSUB Ps error 890 IF Err THEN 900 PRINT Change pass code to the power supply model or zero then restart the program 910 STOP 920 ELSE 930 GOTO Start 940 ENDIF 950 END IF 960 970 Start 980 N o 990 CLEAR SCREEN 1000 PRINT Initializing EEPROM Figure 3 17 Initialization and Factory Preset Replacement Program Listing Sheet 2 of 3 Service Addendum 21 Initialization and Factory Preset Replacement Program Listing sheet 3 1010 1020 1030 1040 1050 1060 1070 1080 1090 1100 1110 1120 1130 1140 1150 1160 1170 1180 FOR I 1 TO 49 OUTPUT Ps DIAG EEPR Addr 1 Length I Init data l NEXT CLEAR SCREEN OUTPUT Ps CAL STATE OFF Turn off cal mode GOSUB Ps error Check for errors
43. W Resistor 1K 1 125W Resistor 100 1 Resistor 82 5K 1 Resistor Zero Ohms Resistor 82 5K 1 Resistor 100 1 Resistor Zero Ohms Resistor 60K 1 Resistor 30K 1 125 Resistor100K 1 Resistor 9K 1 125W Resistor 825K 1 Resistor 1 74M 1 Resistor 30K 1 125 Resistor 100 1 Resistor 10K 1 125W Resistor 475 1 125W Resistor 2 74K 1 Resistor 9K 1 125W Service Addendum 35 Table 5 7 Parts List for PC Board Assembly 1 Continued Reference Designator Model Part Number Description R624 8159 0005 Resistor Zero Ohms R625 E4350B 0698 8826 Resistor 825K 1 R625 E4351B 0699 1972 Resistor 1 74M 1 R626 8159 0005 Resistor Zero Ohms R627 8159 0005 Resistor Zero Ohms R628 E4350B 8159 0005 Resistor Zero Ohms R628 E4351B 0698 6629 Resistor 60K 1 R630 0757 0395 Resistor 56 2 1 R631 0757 0199 Resistor 21 5K 1 R632 0757 0401 Resistor 100 1 125W R633 0757 0469 Resistor 150K 1 R634 0757 0446 Resistor 15K 1 125W R635 0757 0430 Resistor 2 21K 1 R636 0757 0415 Resistor 475 1 125W R637 0757 0415 Resistor 475 1 125W R638 0757 0407 Resistor 200 1 125W R639 0698 3155 Resistor 4 64K 1 R640 0698 3155 Resistor 4 64K 1 R641 0698 3153 Resistor 3 83K 1 R642 0698 3155 Resistor 4 64K 1 R643 0698 8695 Resistor 36K 1 R644 0698 0084 Resistor 2 15K 1 R645 0757 0442 Resistor 1 125W R646 0757 0280 Resistor IK 1 125W R647 0683 0475 Resistor 4 7 5 25W R648 0683 0475 Resi
44. Zero Ohms R478 0698 3279 Resistor 4 99K 1 R479 0698 4435 Resistor 2 49K 1 R480 E4350B 0757 0418 Resistor 619 1 125W R480 E4351B 0757 0282 Resistor 221 1 125W R481 0698 3156 Resistor 14 7K 1 R482 0698 3557 Resistor 806 1 125W R483 0757 0279 Resistor 3 16K 1 R484 0757 0199 Resistor 21 5K 1 R485 0757 0199 Resistor 21 5K 1 R488 0698 3279 Resistor 4 99K 1 R489 E4350B 0757 0451 Resistor 24 3K 1 R489 E4351B 0757 0457 Resistor 47 5K 1 R490 0698 6360 Resistor 10K 1 R491 0698 6360 Resistor 10K 1 R492 0757 0433 Resistor 3 32K 1 R493 E4350B 0699 1254 Resistor 536K 1 R493 E4351B 0698 8827 Resistor 221K 1 R494 E4350B 0757 0412 Resistor 365 1 125W R494 E4351B 0757 0421 Resistor 1M 1 125W R495 0757 0434 Resistor 3 65K 1 R496 0757 0469 Resistor 150K 1 R497 0698 3160 Resistor 31 6K 1 R498 0698 3162 Resistor 46 4K 1 R499 0757 0463 Resistor 82 5K 1 R500 0757 0407 Resistor 200 1 125W R501 0757 1093 Resistor 3K 196 125W R502 E4350B 0698 3493 Resistor 4 12K 1 R502 E4351B 0757 0427 Resistor 1 5K 1 R503 E4350B 0698 3156 Resistor 14 7K 1 R503 E4351B 0698 4121 Resistor 11 3K 1 34 Service Addendum Reference Designator R504 R505 R506 R507 R508 R509 R510 R511 R512 R513 R514 R515 R516 R517 R520 R521 R522 R523 R524 R525 R526 R601 R602 R603 R604 R605 R606 R607 R608 R608 R609 R610 R610 R611 R612 R613 R613 R614 R615 R615 R616 R616 R617 R618 R618 R619 R619 R6
45. d remove top cover to access the A1 board Turn on the supply and check voltage at heatsink of A1Q770 TP 12 with respect to common TP 9 See Fig 6 5 Sheet 1 See Self Test Error Codes Messages Table 3 2 Using front panel keys program full scale voltage and current Check the voltage at the supply s output terminals with a DMM Output voltage within spec A1Q700 Heatsink Y 1 Check ac bias voltage at T1 secondary and cable W7 See Fig 6 2 in 665xA service manual 2 Check A1F700 701 D702 705 C711 and R709 1 Check Fan and cable connection A1J601 2 Check fan speed control circuit A1Q700 A1U702 and associated components See Fig 6 5 sheet 1 To Sheet 4 4 To Sheet 2 Figure 3 2 Overall Troubleshooting sheet 1 of 5 Service Addendum Overall Troubleshooting sheet 2 From Sheet 1 Voltage display within spec CV Annunciator Reads approx right but outside spe A5J722 1 approx 4 1V Yes Check cables from Al main board to 5 DSP board Calibrate the supply See Appendix A in the Operating manual Voltage readback circuit on 5 DSP board defective See CV CC Status Annunciator Troubleshooting paragraph Turn off the supply and connect a short across the output terminals Turn on and program full scale voltage and current using front panel keys Check o
46. ect 2mV mV 2mV 230uV Source Effect 2mV mV 2mV 230uV PARD Ripple amp Noise Peak to Peak 0 mV 95mV 3mV RMS 0 mV 12mV 1 5mV Constant Current Tests Current Programming and Readback Accuracy Low Current set to Jout 10mA mA 10mA 164 14mA mA 14mA 6 High Current to 4A Jout2 3 982A A 4 018A 0 6mA Readback Accuracy Lu2 22mA mA Von 22mA 0 6mA Current Sink 0 9A Readback Isink 27mA mA Isink 27 120 PARD Ripple amp Noise RMS 0 mA 2 4mA 270 5 5 RMS 0 mA 4mA 270 0 mA 32mA 2 6mA Load Effect ImA mA ImA 2 2HA Source Effect ImA m ImA 2 2UA Enter your results in this column PARD Optional Test in SAS mode Program I V Curve lIc 4 Iup 3 75A 120 130 32 Ohms Use Fig 2 3 with scope across monitoring resistor for P P ripple or RMS voltmeter for RMS Service Addendum Chapter 3 Differences Signature Analysis Signature analysis SA troubleshooting for the secondary circuits on the A1 main circuit board is NOT available for the Agilent E4350B unit However GPIB and front panel signature analysis is available as described in chapter 3 of the Service Manual Self Test Error Codes Messages Table 3 2 Self Test Error Codes Messages Code Message Description Probable Cause 1 FP RAM Front pane
47. endum Voltage and Current Values Table 2 3 Voltage and Current Values Agilent Model Full scale Max Prog Full scale Max Prog Max Prog Voltage Voltage Current Current Overvoltage E4350B 60V 61 5V 8 16A 73 0V E4351B 120V 123V 4A 4 08A 140V Transient Recovery Time This test does not need to be performed on the Agilent E4350B CC RMS Noise Measurement Test Setup IP VPIMIMYP S S _ 240 VDC MAX SETTO gee REMOTE MONITOR RMS RESISTOR 1 6 OHM Adjusted to 1 Ohm 1 VOLTMETER LOAD RESISTOR E4350B 2 16 Ohm resistors in parallel Adjusted to 7 Ohms 1 E4351B 2 16 Ohm resistors in series Adjusted to 25 Ohms 1 Figure 2 3 CC RMS Noise Measurement Test Setup Service Addendum 5 Performance Test Record Table 2 15A Performance Test Record for Agilent Model E4350B Agilent E4350B Report No Date Test Description Minimum Spec Result Maximum Spec Measurement Uncertainty Constant Voltage Tests Voltage Programming and Readback Accuracy Low Voltage set to OV Vous 10mV mV 10mV 1 5u V Readback Accuracy Von 42mV mV 42mV 2uV High Voltage set to 60V V 59 945V V 60 055V 845uV Readback Accuracy Von 90mV mV Vou 90mV 845uV Load Effect 2mV mV 2mV 40uV Source Effect
48. erial Link See Chapter 4 in Operating manual and the front panel voltage current rotary controls See Chapter 5 in the Operating manual Yes Down Programming OK Check Primary Interface A2 No No 0113 0114 0118 lt y Go to Slow Down Programming troubleshooting Fig 3 15 Digital Control Port Yes Serial Link OK 7 Check A2U109 0114 Yes Check Voltage and Current controls A3G1 amp G2 Rotary Controls OK Yes y No problem found Perform Verification tests in Chapter 2 to determine if a problem exists Figure 3 2 Overall Troubleshooting sheet 3 of 5 Service Addendum Overall Troubleshooting sheet 4 From Sheet 1 From Sheet 2 Output voltage approx right but approx right but outside spec outside spec 9 9 t Calibrate the supply See Appendix IN A in the Operating manual PROT Display reads Check Voltage Monitor annumciator on approx output circuit 10605 voltage Yes Press PROT key Display reads approx 0 Amps Check output for Output shorted shorted circuits Check Current Monitor Display reads circuit A1U605 approx output current Go to Output Held Low troubleshooting No v Go to Output Held Low
49. es Figure 6 5 in the standard Service Manual Left Tunnel Circuits Figure 6 6 The component locations and schematic drawings for the 4 left tunnel circuits included in this addendum replace figure 6 6 in the standard Service Manual Right Tunnel Circuits Figure 6 7 The component locations and schematic drawings for the A4 right tunnel circuits included in this addendum replace figure 6 7 in the standard Service Manual DSP Board Figure 6 10 The simplified component locations diagram for the A5 DSP board shows the location of the troubleshooting test points on the J721 and J722 connectors as well as the location of the two replaceable ROM chips U734 and U735 Because troubleshooting for the 5 DSP Board is to the assembly level only no schematics or parts lists are included for this board Adapter Board and Phone Adapter Board Figures 6 11 6 12 The Adapter board connects the A5 DSP board to the A1 main board The A7 Phone Adapter board connects the A5 DSP board to the A2 GPIB board 46 Service Addendum A C 5 S Vo 55 E N SS RA Jo Q 3 O a EH O o o 5 o N N N Sg c E N Y 2712 LNI O 520 s O xF450 O 51 N SES Ragate 0006 El a x SEEN 6 900
50. gt _ P722 3 P721 1 1 P721 2 gt P721 3 gt P721 4 P721 5 gt 721 6 721 7 P721 8 gt P721 9 P721 10 P721 1D USE A HEAVIER TRACK 59 COM 900 20 J900 24 P721 19 Beide 294900 29 P721 1 3900 34 P221 12 11500255 721 19 Bioiciq 1900 25 721 29 1900 26 P721 2D P721 22 P721 2 gt _ P721 24 __ P721 2 gt _ P721 2 P721 2 P721 28 P721 2 P7281 30 P721 3D 721 33 P721 34 _ H 200 28 900 14 7J900 33 UMP J900 23 900 12 UMONP GNDU IMONP GNDI 5U REF CU PROG PROG 15U 15U DU_PROG OC_PROG HP27 STAR THERM HS FAN_PROG J900 2 J900 4 HP25 STAR GND 4900 6 J900 8 CUx DUSCR OCP 59 585 INHIBIT PROT CLR UMP PLCR J900 45U 150 GND zi gt 2 5UREF C4 R2 10K 047 AX 500 17104 R3 715 R4 10K 14 17104 900 1 226 LOADED I bo ETO ORO OOO POPP POD 6666666 006 0000000000000000 7 0000000000000000 pS000000000000000002 o 88 o ceed
51. l RAM test failed Microprocessor A3U3 defective E2 FP ROM Front panel ROM test failed ROM A3U4 or address latch A3U8 defective E3 EE CHKSUM Front panel EEPROM checksum failed Possibly due to power loss during a write operation See checksum Error Recovery on page 3 3 in the Operating manual If power loss is not the problem EEPROM A3U6 could be defective after replacing U6 supply must be initialized and calibrated E4 PRI XRAM Primary interface external RAM test failed A2 GPIB board defective E5 PRI IRAM Primary interface internal RAM test failed A2 GPIB board defective E6 PRI ROM Primary interface DOM test failed A2 GPIB board defective E7 GPIB GPIB interface test failed Talker Listener chip A2U1 17 defective E8 SEC RAM Secondary interface RAM test failed 5 DSP board defective E9 SEC ROM Secondary interface ROM test failed 5 DSP board defective E10 SEC 5V Secondary interface 5 volt readback test failed A5 DSP board defective E11 TEMP Ambient temperature readback test failed 5 DSP board defective E12 DACS CV or CC DAC test failed 5 DSP board defective E30 SEC DAC Secondary interface DAC test failed 5 DSP board defective E31 SEC DAC Secondary interface DAC test failed 5 DSP board defective E32 SEC DAC Secondary interface DAC test failed 5 DSP board defective E45 SEC IO Secondary interface test failed A5 DSP board defective E46 SEC NVRAM Secondary interface nonvolatile RAM test failed A5 DSP board defective Note The fo
52. le Check voltage at A5 J722 22 TP40 A1U405 and A1U602 with respect to common TP9 1722 22 approx 2 7V No Replace 5 DSP board Check voltage at A1U405 5 with respect to common TP9 A1U405 7 Check A1R644 R747 and C417 Voltage at A1U603 7 should be A1U405 5 Negative approx 2V Check A5 J721 12 If not 5V Yes replace A5 DSP board If 5V check A1U602 and DSP cable A12U602 6 approx 5V Check A1U405 Yes Y Check voltage across AIR516 Check A1U410 0701 A1U602 6 approx sv short Yes y Check A1Q701 and 700 Figure 3 6 OV Will Not Fire Troubleshooting Service Addendum 15 OV at Turn On Troubleshooting je OV at Turn On Start E Check that the supply is not programmed to OV at Caution Dur Ing turn on Ens setting is urn on Ensure that the voltage setting is not greater these tests the than the setting Program and Max then save the settings in Register O press shift save 0 output may be at and Enter key Turn the supply off then back on hazardous levels Connect DC coupled scope across the output terminals Turn the supply on and check that the output does not momentarily go higher than the voltage setting Momentarily goes high Yes y Turn off the supply a
53. llowing error messages can appear due to a failure occurring either while the power supply is operating or during self test SERIAL TIMEOUT Serial data line failure on GPIB board A2 GPIB board defective SERIAL DOWN Serial data line failure on GPIB board A2 GPIB board defective UART PARITY Uart failed on GPIB board A2 GPIB board defective UART FRAMING Uart failed on GPIB board A2 GPIB board defective UART OVERRUN Uart failed on GPIB board A2 GPIB board defective SBUF OVERRUN Serial buffer failure on GPIB board A2 GPIB board defective SBUF FULL Serial buffer failure on GPIB board A2 GPIB board defective STK OVERFLOW Stack overflow failure on DSP board A5 DSP board defective EE WRITE ERR EEPROM write failure on front panel board EEPROM A3U6 defective or calibration error SECONDARY DN Serial data line failure on DSP board A5 DSP board defective 8 Service Addendum Overall Troubleshooting sheet 1 Start Overall Troubleshooting Turn off supply disconnect the load and push the sense switch on the rear panel in local Turn on the supply Display On Yes Y Go to No Display Troubleshooting 1 Check ac input and line cord 2 Check line fuse voltage select jumpers on 1 voltages at T1 secondary 3 Turn off supply remove top cover check line 4 Turn on supply check ac power and ac bias Fan on Error message displayed Turn off the supply an
54. mponent Locations for E4350B 47 Figure 6 7 A4A2 A4A4 Right Tunnel Circuit Schematic Diagrams for E4350B sse 47 Figure 6 10 5 DSP Board Test Points essere 47 Figure 6 11 Adapter Board Schematic Diagram 47 Figure 6 12 A7 Phone Adapter Board Component Location and Schematic Diagram sese 47 2 Service Addendum Chapter 1 Differences Firmware Revisions The Agilent E4350B E4351B SAS firmware resides in the front panel board s ROM chip A3U4 the GPIB board s ROM chip A2U106 and in the DSP board s ROM chips A5U734 and 50735 Use the IDN query as described in chapter 3 of the Service Manual to get the firmware revision numbers Chapter 2 Differences Test Equipment Required Table 2 2 Test Equipment Required for Verification Type Required Characteristics Recommended Model Current Monitor Resistor 15A 0 1 Ohm 0 04 Guildline 9230 15 DC Power Supply SV 10A Agilent 6642A 6653A Digital Voltmeter Resolution 10nV 1 V Agilent 3458A Readout 8 1 2 digits Accuracy 20 ppm Electronic Load Voltage and current range must exceed range of supply under test Power range 500 W min Agilent 6050A mainframe with Agilent 60504A 60 V plug in module or Agilent 60504A J10 120 V plug in module GPIB Controller Full GPIB capabilities HP Series 300 Load Resistor 2
55. nd remove the top cover Disable the OV circuit by lifting A1R447 Turn on the supply and check the output voltage Go to Output Held High Troubleshooting Output high Yes Check A1R447 R446 C417 Check voltages at A1U405 7 TP44 U603 5 TP17 U405 5 TP42 and U405 3 TP41 to Common TP9 See Table 6 3 Check A1U405 A1U405 7 approx 5V Check A1U411 Check A1R644 C417 Figure 3 7 OV at Turn on Troubleshooting 16 Service Addendum A1U405 7 approx 5V A1U405 7 approx 5V No Replace 5 DSP board Output Held Low Troubleshooting sheet 1 Output Held Low Start The supply s output is low and the PROT annunciator is not on Turn supply off disconnect the load and remove the top cover Turn the supply on and check the secondary bias and reference voltages TP s 9 through 12 See Table 6 3 Voltages OK Yes Check that the Rail and Rail Voltages are correct See Fig 6 5 Sheet 1 Rail Voltages OK Yes y Troubleshoot the defective curcuit See Fig 6 5 Sheet 1 Check power xfmr Tl ac voltages input rectifiers and filter caps See Fig 6 5 Sheet 1 Program full scale voltage and current measure 15 no a power supply readback problem Check voltages is approximately 4 volts at ASJ722 15
56. nt Panel Logo Ref J690 Ref G1 G2 Ref Rmt Lcl Switch Ref GPIB Connector Ref Front Frame Ref Cover PCB A5 Board Ref Xfmr Bracket Ref Term Block Cover Ref Top Cover Ref A5 Cover A6 Board Ref Fan Top Shroud Ref Shroud To Base AC Gnd Ref Display Ref Heatsink Ref A4 Top amp Bottom Ref TI Part Number E4350 61024 E4351 61021 5063 4851 5063 2360 5063 4816 5063 4818 5063 4820 5063 4811 5063 4852 5063 4813 06652 80006 06652 80007 06654 80001 06654 80003 06652 80009 06652 80008 06652 80011 5080 2168 06652 80010 06652 80011 06652 80001 06652 80002 5080 2261 5080 2419 Chassis Mechanical E4350 80003 E4351 80002 0360 2191 0370 1091 0370 2862 0380 644 0515 0374 0515 0375 0515 0380 0515 0382 0515 0413 0515 1085 0515 1132 0515 1455 0515 0430 0535 0031 0535 0082 0590 0534 06652 00004 06652 00008 06652 20001 06652 60005 Service Addendum Description Main PC Board Main PC Board GPIB Board Keypad Front Panel PC Board Right Tunnel PCA Left Top Tunnel PCA Left Bottom Tunnel PCA DSP Board Access Panel PCA Phone PCA Cable Assembly AC 1 Cable Assembly AC 2 Cable Assembly Xfmr Cable Assembly Rail Cable Assembly AC Bias Cable GPIB Bias Cable Phone A2 to L Tunnel Cable Phone A2 to A3 Cable Phone A1 to L Tunnel Cable Phone A1 to R Tunnel Cable Assembly A1 to L Tunnel Cable Assembly A1 to R Tunnel Cable Assembly LCD Ribbon Cable A1 to A6 Nameplate E4350B Nameplate
57. r 220pF 5 Capacitor 4700pF 10 Capacitor 4700pF 10 Capacitor 220pF 5 Capacitor 22uF 10 Capacitor luF 35V Capacitor 047 uF 20 Capacitor 047 uF 20 Capacitor 047 uF 20 Capacitor 0 047uF 50 V Capacitor 0 047uF 50 V Capacitor 220pF 5 Capacitor470PF 100V Capacitor 047 uF 20 Capacitor 022uF 10 Capacitor 4700pF 10 Capacitor 033 uF 10 Capacitor 033 uF 10 Capacitor luF 10 50V Capacitor 6800pF 100V Capacitor 4700pF 10 Capacitor 022uF 10 Capacitor 01UF 10 Capacitor 047 uF 20 Capacitor 047 uF 20 Capacitor 047 uF 20 Capacitor 33pF 5 100V Capacitor 100pF 5 Capacitor 47pF 5 100V Service Addendum 29 Reference Designator C448 C449 C450 C451 C452 C453 C454 C455 C456 C457 C458 C459 C541 C601 C601 C603 C604 C605 C606 C607 608 C609 C610 611 C700 C701 C702 C703 C704 C705 C706 C707 C709 C709 C710 C711 712 713 C714 C715 C715 C716 C718 C719 C719 C720 C720 C721 30 Table 5 7 Parts List for Main PC Board Assembly 1 Continued Model E4351B E4350B E4350B E4351B E4350B E4351B E4351B E4350B E4351B E4350B E4351B E4350B Part Number 0160 5422 0160 4791 0160 5422 0160 4832 0160 4355 0160 4846 0160 5422 0180 4129 0160 4805 0160 4831 0160 4787 0160 4832 0160 4832 0160 6806 0160 4323 0160 4795 0160 5422 0160 5422 0160 4800 0160 5422 0160 4801 0180 0197 0160 4835 0160 4800 0160 4281 0160 4281
58. rent programmed The measurements were made first in the CV mode with no load and then in the CC mode with the load set for full scale output voltage and current If the CC annunciator is not on set the current to a slightly lower value until it comes on TP26 D413 CC control sheet 2 1 57V in CV mode cathode 0 15V in CC mode TP27 R703 RmOUTB sheet 2 3 3mV in CV mode with no load 0 19V in CC mode with 8A load TP28 0403 7 Imon sheet 2 0 9mV in CV mode with no load 4 39V in CC mode with 8A load TP29 R430 Neg Imon sheet 2 13 9mV in CV mode 3 9V in CC mode with 8A load TP31 U407 7 sheet 2 5V in CV mode OV on CC mode TP32 U408 7 CV control sheet 2 0 8V in CV mode 1 55V in CC mode TP33 U401 7 Vmon sheet 2 4 1V in CV or CC mode full scale voltage output TP34 U407 12 CV sheet 2 in CV mode 5V in CC mode TP35 U408 3 CV or CC control sheet 2 0 5V in CV mode 0 98V in CC mode TP36 D429 FET control sheet 2 0 05V in CV mode anode 0 98V in CC mode TP37 D419 Gross current limit circuit 14 5V in CV or CC mode cathode sheet 2 TP38 D425 DP Control sheet 2 0 22V in CV mode cathode 1 9V in CC mode TP39 R444 OV_Prog sheet 2 5 17V full scale programmed TP40 R706 Fan_Prog sheet 1 0 5V approximate low speed 3 2V approximate medium speed 4A output 5V approximate high speed 8A output TP41 R453 OC_Prog sheet 2
59. ront Frame Foot Cap Strap Handle Front Cap Strap Handle Rear Strap Handle Cable Chain 2m Guide Service Guide Programming Guide Operating SAS Operating Guide Bracket Mounting Cover Nameplate E4350B Nameplate E4351B Reference Designator Model E4350B E4351B E4350B E4351B E4350B E4351B E4350B E4350B E4350B E4350B E4351B E4350B E4350B E4351B E4350B Table 5 7 Parts List for Main PC Board Assembly A1 Part Number E4350 61024 24351 61021 0160 4835 0160 4834 0160 4835 0160 4834 0160 4807 0160 4807 0160 5422 0160 4812 0160 5422 0160 5422 0160 4800 0160 4800 0160 5422 0160 4800 0160 4800 0160 6616 0160 5909 0160 5422 0160 4812 0160 4831 0160 4831 0160 4812 0160 5098 0180 4129 0160 5422 0160 5422 0160 5422 0160 5909 0160 5909 0160 4812 0160 4808 0160 5422 0160 4833 0160 4831 0160 5644 0160 5644 0160 5469 0160 6616 0160 4831 0160 4833 0160 4832 0160 5422 0160 5422 0160 5422 0160 4807 0160 4801 0160 4805 Description Main Board Electrical Main Board Electrical Capacitor luF 10 50V Capacitor 047UF 10 Capacitor luF 10 50V Capacitor 047UF 10 Capacitor 33pF 5 100V Capacitor 33pF 5 100V Capacitor 047 uF 20 Capacitor 220 pF 5 Capacitor 047 uF 20 Capacitor 047 uF 20 Capacitor 120pF 5 Capacitor 120pF 5 Capacitor 047 uF 20 Capacitor 120pF 5 Capacitor 120pF 5 Capacitor 6800pF 100V Capacitor 0 047uF 50 V Capacitor 047 uF 20 Capacito
60. sheet l 20 Initialization and Factory Preset Replacement Program Listing sheet 2 essere 21 Initialization and Factory Preset Replacement Program Listing sheet 3 sss 22 Cable and Connector Locations aia oli 23 Chapter4 Differences oto teet titi 25 Digital Signal Processor Board 5 ss teo divos iste Dni ccepit 25 Simplified Diagram ot DSP CICUS ve iii tc e dud ieri on kg 26 Chapter Differences uoto A E ia 27 Chapter 6 Differences 3 re aee ote rers On Rt e ERE capes prb e rete eer EP ME 43 Test POMS ier to e ORI OR Te De n ERREUR RD o IRE Ee EPA e pct coso 43 Figure 6 5 Al Main Board Component Location Coordinates for esses 47 Figure 6 5 Al Main Board Assembly Drawing and Test Points for E4350B sse 47 Figure 6 5 Al Main Board Schematic Diagram for E4350B sheet 1 of 4 47 Figure 6 5 Al Main Board Schematic Diagram for E4350B sheet 2 of 4 47 Figure 6 5 Al Main Board Schematic Diagram for E4350B sheet 3 of 4 47 Figure 6 5 Al Main Board Schematic Diagram for E4350B sheet 4 of 4 47 Figure 6 6 A4 Left Tunnel Circuit Component Locations for E4350B sse 47 Figure 6 6 A4A1 A4A3 Left Tunnel Circuit Schematic Diagrams for E4350B sese 47 Figure 6 7 A4 Right Tunnel Circuit Co
61. stor 4 7 5 25W R649 0757 0280 Resistor IK 1 125W R650 0757 0441 Resistor 8 25K 1 R651 0757 0465 Resistor 100K 1 R652 0698 3160 Resistor 31 6K 1 R653 0757 0199 Resistor 21 5K 1 R654 0698 8816 Resistor 2 15 1 R655 0757 0199 Resistor 21 5K 1 R656 0757 0199 Resistor 21 5K 1 R657 0698 3162 Resistor 46 4K 1 R658 0757 0199 Resistor 21 5K 1 R659 8159 0005 Resistor Zero Ohms R661 0757 0401 Resistor 100 1 125W R662 0757 0280 Resistor IK 1 125W R700 0683 1055 Resistor 1M 5 25W R701 0699 1797 Resistor 5 25W R702 0683 0335 Resistor 3 3 5 25W R703 E4350B 0811 3764 Resistor 025 7W 2 R703 E4351B 0811 3770 Resistor 05 OHM 1 R704 8159 0005 Resistor Zero Ohms R705 0698 6359 Resistor 80K 0 1 R706 0698 6979 Resistor 111 1K 1 R707 0699 1212 Resistor 19K 1 R708 8159 0005 Resistor Zero Ohms R709 0699 4707 Resistor 25 Ohm R710 0811 2201 Resistor 270 5 2W PW R711 0811 2201 Resistor 270 5 2W PW 36 Service Addendum Table 5 7 Parts List for Main PC Board Assembly 1 Continued Reference Designator Model R712 R713 E4350B R714 E4351B R716 E4351B R717 R718 R719 R720 R721 E4350B R721 E4351B R722 E4350B R722 E4351B R723 E4350B R723 E4351B R724 R725 E4350B R725 E4351B R726 R727 R728 R729 REF D709 E4350B REF D709 E4350B REF D7092 E4351B REF D7094 E4351B REF J451 E4350B REF J451 E4350B REF J690 J691 E4350B REF J690 J691 E4350B REF J451 E4351B REF J4512 E4351B REF J4513
62. tor 20K 1 1W Resistor Zero Ohms Resistor Zero Ohms Resistor Zero Ohms Resistor 20K 1 1W Resistor 900 1 Resistor 900 1 Resistor 20K 1 1W Resistor Zero Ohms Resistor 4 64K 1 Resistor 17 8K 1 Resistor 9 09K 1 Resistor 4 64K 1 Resistor 1 2M 1 Resistor 825K 1 Resistor 4 64K 1 Resistor 15K 1 125W Resistor 6 81K 1 Resistor 1M 1 125W Resistor3 16M 1 Resistor 464K 1 Resistor 100K 1 Resistor 182K 1 Resistor 2 15K 1 Resistor 4 64K 1 Resistor 15K 1 125W Resistor 464K 1 Resistor 5K 1 125W Service Addendum 33 Table 5 7 Parts List for PC Board Assembly 1 Continued Reference Designator Model Part Number Description R453 0699 0533 Resistor 4 64K 1 R455 0698 0084 Resistor 2 15K 1 R456 0757 0401 Resistor 100 1 125W R458 0698 3428 Resistor 14 7 1 R460 0757 0459 Resistor 56 2K 1 R461 0698 3162 Resistor 46 4K 1 R462 0698 3162 Resistor 46 4K 1 R463 0757 0283 Resistor 2K 1 125W R464 0698 4435 Resistor 2 49K 1 R465 0698 6360 Resistor 10K 1 R466 0757 0430 Resistor 2 21K 1 R467 E4350B 0757 0270 Resistor 249K 1 R467 E4351B 0757 0468 Resistor 130K 1 R468 0698 5454 Resistor 9K 1 125W R469 0698 3700 Resistor 715 1 125W R471 0757 0401 Resistor 100 1 125W R473 0757 0427 Resistor 1 5K 1 R474 0698 3156 Resistor 14 7K 1 R475 E4350B 0757 0418 Resistor 619 1 125W R475 E4351B 0757 0283 Resistor 221 R476 0698 3156 Resistor 14 7K 1 R477 8159 0005 Resistor
63. uit Transistor Array Integrated Circuit Integrated Circuit Integrated Circuit Opto Isolator Integrated Circuit Integrated Circuit Transistor Array Transistor Array Integrated Circuit Service Addendum 37 Table 5 7 Parts List for Main PC Board Assembly 1 Continued Reference Designator Model Part Number Description 0604 1858 0077 Transistor Array U605 1858 0076 Transistor Array U700 5060 3321 IC Heat Sink Assy U701 5063 2351 IC Heat Sink Assy U702 1826 1533 Integrated Circuit U703 5063 2328 IC Heat Sink Assy VR400 1902 0556 Zener Diode 20V 5 VR600 1902 0947 Zener Diode 3 6V 5 VR601 1902 0947 Zener Diode 3 6V 5 VR602 1902 3104 Zener Diode 5 62V 5 VR603 1902 0958 Zener Diode 10V 5 VR700 1902 0957 Zener Diode 9 1 V 5 VR701 1902 0955 Zener Diode 7 5V 5 XF450 2110 0927 Fuseholder w Cap Table 5 9 Parts List for GPIB PC Assembly 2 Reference Designator Part Number Description A2 5063 2356 GPIB Board unchanged Table 5 10 Parts List for Front Panel PC Assembly Reference Designator Part Number Description A3 5063 2360 Front Panel Board unchanged 38 Service Addendum Reference Designator 201 202 203 204 205 206 208 211 201 D203 D204 D205 F201 F202 F203 F204 F205 F206 F207 F208 J201 J202 Q201 Q203 Q205 Q207 Q206 R201 R202 R203 R204 R206 R207 R208 R209 R210 R212 R213 R214 R215 R216 R217 R218 R219 R220 R221 R224 R22
64. utput current with an external ammeter Output current within spec Current display within spec No gt c To Sheet4 Reads approx right but outside spec Yes y A5J722 3 Imon approx 4 4V Yes Y Check cables from A1 Main board to 5 DSP Calibrate supply See Appendix A in the Operating manual CC Annunciator on To Sheet3 10 Current readback circuit on A5 DSP board defective Current readback circuit on AS DSP board defective Figure 3 2 Overall Troubleshooting sheet 2 of 5 Service Addendum Overall Troubleshooting sheet 3 From Sheet 3 Turn off the supply and remove the short from the output Turn on and program output voltage and current to full scale and the OV to zero using front panel keys Check that the supply goes into OV condition OV Prot annunciator on and output at 0 Did OV occur No Go to OV Will Not Fire Troubleshooting Yes v Turn off the supply and connect a GPIB controller to the supply Turn on the supply and using the controller program the supply to full scale voltage and current Check that the supply accepts the commands and can be programmed down rapidly 1 Check GPIB cable Does supply accept No ds 2 Check A2J115 J117 and J120 commands Check operation of the Digital Control Port See Appendix A of the Operating manual S
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