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Troubleshooting

Keysight RP7900 Series Advanced Service Guide

PFC inverter board operation

– The inverter boards consists of fuses, relay, big relay, and hall current sensors.
– The AC 3-phase input will go through the fuses. By turning on the bias, the AC

input will go through a small relay with a resistor path in order to have a soft

charge on the capacitor in the driver board. After that, the big relay will be

turned on when you hear the second clicking sound.

– The current passes through the hall sensor into the choke followed by the IGBT

and output capacitors.

PFC driver board operation

– The PFC driver boards consists of photo-detectors and big capacitors. The

gate driver output is influenced by signals from the photo-detector circuitry.

During normal operation, if the supply voltage is above the UVLO threshold,

the output of the photo-detector will drive the IGBTs of the output stage.

Summary of Contents for N6991A

Page 1: ... RP7900 Series Regenerative Power System This manual provides the documentation for the following instruments RP7951AT RP7952AT N6991A RP7951A RP7952A RP7953A RP7961A RP7962A and RP7963A Advanced Service Guide ...

Page 2: ...ights customarily provided to the public to use modify reproduce release per form display or disclose commercial computer software or commercial com puter software documentation No additional government requirements beyond those set forth in the EULA shall apply except to the extent that those terms rights or licenses are explicitly required from all providers of commercial computer software pursu...

Page 3: ...warning and safety notices in this manual all relevant safety accident prevention and environmental regulations must also be followed In particular the operators of the equipment Must be informed of the relevant safety requirements Must have read and understood the operating manual before using the equipment Must use the designated and recommended safety equipment WARNING General Do not use this p...

Page 4: ...rough a grounded power cable with the ground wire firmly connected to an electrical ground safety ground at the power outlet Any interruption of the protective grounding conductor or disconnection of the protective earth terminal will cause a potential shock hazard that could result in injury or death WARNING Before applying power Verify that all safety precautions are taken All connections must b...

Page 5: ...erous voltage on the output or sense terminals before touching them WARNING SHOCK HAZARD from external energy sources Because the instrument can be used as a load to sink current hazardous voltages from an external energy source such as a battery may be present on the output terminals even with the unit turned off Provision must be made to disconnect the external energy source before touching the ...

Page 6: ...tains an internal fuse which is not customer accessible WARNING Cleaning To prevent electric shock always disconnect the AC mains before cleaning Use a dry cloth or one slightly dampened with water to clean the external case parts Do not use detergent or chemical solvents Do not attempt to clean internally WARNING In case of damage Instruments that are not functioning correctly appear damaged or d...

Page 7: ...du Canada ISM GRP 1 A This is an Industrial Scientific and Medical ISM Group 1 Class A product The ETL mark is a registered trademark of Intertek The text indicates product compliance with the Canadian Interference Causing Equipment Standard ICES 001 This product is marked with the ACMA RCM mark for compliance in Australia New Zealand A copy of the Manufacturer s Australia Declaration of Conformit...

Page 8: ...ssessed for used in business environments In a residential environment this equipment may caused radio interference This EMC statement applies to the equipment only for use in business environment 사용자 안내문은 업무용 방송통신기자재 에만 적용한다 사 용 자 안 내 문 이 기 기 는 업 무 용 환 경 에 서 사 용 할 목 적 으 로 적 합 성 평 가 를 받 은 기 기 로 서 가 정 용 환 경 에 서 사 용 하 는 경 우 전 파 간 섭 의 우 려 가 있 습 니 다 ...

Page 9: ...toring and Control Instrument product The affixed product label is as shown below Do not dispose in domestic household waste To return this unwanted instrument contact your nearest Keysight Service Center or visit http about keysight com en companyinfo environment takeback shtml for more information Sales and Technical Support To contact Keysight for sales and technical support refer to the suppor...

Page 10: ...10 Keysight RP7900 Series Advanced Service Guide THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK ...

Page 11: ...chitecture 16 Titan HV architecture 17 General Troubleshooting Information 26 List of Error Codes 27 Hardware Troubleshooting Guide 31 Required equipment 31 Hardware trouble shooting procedure 32 2 Disassembly Electrostatic Discharge ESD Precautions 40 Disassembly Tools 41 Disassembly Tips 42 Removing Installing flat flexible cables FFC or ribbon cables 42 Assembly procedures 42 Disassembly Proced...

Page 12: ...k plane assembly 59 Removing the bias bracket from the chassis 62 Removing the constellation and P600 assembly from the chassis 63 Removing the GPIB board from the chassis 65 Removing the IO board from the chassis 66 Removing the front panel from the chassis 67 Removing the front frame vent from the chassis 70 Removing the fan bracket assembly from the chassis 71 3 Replaceable Parts RP7900 Replace...

Page 13: ...r Troubleshooting 15 Introduction to the Titan HV RP7900 Series Architecture 16 General Troubleshooting Information 26 List of Error Codes 27 Hardware Troubleshooting Guide 31 This chapter lists the possible errors and their description and discusses the procedures for troubleshooting the Keysight RP7900 Series Regenerative Power System ...

Page 14: ...th the requirements This manual serves as a complement to the RP7900 Series Operating and Service Guide Only qualified service trained personnel who have read the Operating and Service Guide prior to this should attempt the procedures listed in this manual WARNING A WARNING notice denotes a hazard It calls attention to an operating procedure practice or the like that if not correctly performed or ...

Page 15: ...probe any area of the UUT as there is HIGH RAIL VOLTAGE present while the UUT is powered ON If you wish to measure any test points always ensure that the DMM probes stay on the measurement area before powering on the UUT 3 After test Turn off the UUT and all other testing equipment Unplug the 3 phase power cord immediately DO NOT touch any location of the UUT as the HIGH RAIL VOLTAGE is slowly dis...

Page 16: ...ms A Titan HV unit consists of 3 phase AC DC front end DC DC isolation stage Non isolated DC DC regulation stage Control board and digital personality module DPM Output board Bias board Customer interface board P600 and carrier 1 Limited distirbution customers only Not available for sale to the public on www keysight com Specification RP7951A RP7961A RP7952A RP7962A RP7953A RP7963A DC ratings Volt...

Page 17: ...7 Titan HV architecture Shown below is the block diagram for a Titan HV unit Titan HV 5 kW models RP7951A RP7961A One pair of isolation board and regulation board Titan HV 10 kW models RP7952A RP7962A RP7953A RP7963A Two pairs of isolation board and regulation board ...

Page 18: ...ront end consists of the Power Factor Correction PFC bias control board PFC driver board and PFC inverter board Its main function is to convert the 3 phase AC input voltage to the require DC voltage as shown in table below The AC front end will assert a PF signal to the secondary FPGA when the line conditions are severe enough that the output power should be restricted or if the rail voltage dips ...

Page 19: ... the capacitor in the driver board After that the big relay will be turned on when you hear the second clicking sound The current passes through the hall sensor into the choke followed by the IGBT and output capacitors PFC driver board operation The PFC driver boards consists of photo detectors and big capacitors The gate driver output is influenced by signals from the photo detector circuitry Dur...

Page 20: ...ltage across the output cap The main function of the center tap sensing is to ensure that the voltage across is balanced The function of the dead time circuit is to make sure that the gates will not be turned on at the same time It allows certain delays to prevent a short circuit The triangle wave generator function acts as a reference signal which compares the IMON signal which eventually determi...

Page 21: ...n between the primary and secondary circuits It receives the DC voltage from the AC front end and then adjusts the voltage level to 565 V The isolation attic board consist of a transformer and over current protection circuitry The isolation board protects itself from live conditions such as local over temperature OT and rail over voltage OV or low voltage LV The source of a rail OV LV will either ...

Page 22: ...rmers It receives the PG signal and outputs voltage 425 V or 980 V from the AC front end steps down the voltage and provides the bias voltages to the respective modules It communicates using the PG signal from the front end Provides 23 V to the isolation board Provides 23 V to the regulation board Provides 12 V to the chassis fan Provides 15 V to the control board ...

Page 23: ...nd a solid state output disconnect circuit up to 40 A Feedback circuitry such as Vmon and IMon will be used to fine tune the accuracy of the voltage or current The output board has different configuration such as parallel or series it depends on the unit model whether it is a high voltage or high current model The output board will provide the second level of filtering to the output ...

Page 24: ...g 24 Keysight RP7900 Series Advanced Service Guide MASTER SLAVE board operation The master slave circuitry allows communication between the units This allows the user to talk with only the master when paralleling units ...

Page 25: ... AUX ADC which main purpose is to process the signal received The calibration files will be stored in the DPM P600 and constellation boards operation The P600 is the processor board which will store the firmware The constellation board is the interface board which is equipped with other communication peripherals such as the USB port LAN port and GPIB ports ...

Page 26: ...ve You will need to use the Firmware Update Utility to install the latest firmware for your instrument Refer to the Firmware Update Utility Instructions for more information on how to update your instrument s firmware For more information see www keysight com find RP7900 Refer to the List of Error Codes on page 27 before attempting the hardware troubleshooting procedure Model Firmware Keysight SD1...

Page 27: ...the calibration password 103 Calibration is inhibited by switch setting Calibration mode is locked out by the calibration switch Check the CAL switch position 104 Bad sequence of calibration commands Calibration commands have not been entered in the proper sequence Refer to the Calibration procedure in the Operating and Service Guide 105 Unexpected output current The measured output current is out...

Page 28: ...n is not allowed Check hardware model number and firmware revision 202 Self test fail A self test failure has occurred Refer to the Hardware Troubleshooting Guide on page 31 203 Compatibility function not implemented The requested compatibility function is not available Check firmware revision 204 NVRAM checksum error A checksum error has occurred in the instrument s nonvolatile random access memo...

Page 29: ...easurement buffer Refer to the Operating and Service Guide 304 Volt and curr in incompatible transient modes Voltage and current cannot be in Step and List mode at the same time 305 A triggered value is on a different range A triggered value is on a different range than the one that is presently set 306 Too many list points Too many list points have been specified 307 List lengths are not equivale...

Page 30: ...ng setup 324 Inconsistent arb settings The arb settings are inconsistent most likely a mismatch in the arb lengths Refer to the Operating and Service Guide 327 Initiated with no sense function enabled A measurement has been initiated without specifying the measurement sense function 328 Too many measurement points Too many measurement points have been specified 331 Illegal parameter value The para...

Page 31: ...nt You will need the equipment listed below to perform the hardware troubleshooting DC electronic load EA EL 9750 75HP or Chroma 63206A 1200 240A or equivalent Digital multimeter Keysight high performance Infiniium oscilloscope Current probe Differential probe Guild line shunt DC power supply Cables and connectors ...

Page 32: ...1 Troubleshooting 32 Keysight RP7900 Series Advanced Service Guide Hardware trouble shooting procedure 1 Visually inspect all the LED indicators as shown below Figure 1 1 Location of the LED indicators ...

Page 33: ... microcontroller board one red and one green Red LED off and green LED flashing constantly indicates that the processor is running and everything is operating normally i e the PFC module is programmed properly Solid red LED and green LED flashing constantly indicates that a self test error is being annunciated Red LED flashing and green LED off indicates that a fault code is being annunciated C DP...

Page 34: ...led to the backplane 3 Measure the PFC output and ensure that the reading is 425 V for the 3 phase 208 V models or 980 V for the 3 phase 480 V models 4 Make sure there is a 425 V or 980 V depending on the model and a 10 V Power Good PG signal going into the bias board The bias board powers the remaining boards 5 Measure the isolation board output Ensure that the reading is 565 V 6 Verify that all ...

Page 35: ...asures the current from the aux ADC DIAG MEAS AUX POWER measures the power from the aux ADC DIAG MEAS MAIN POW LOC measures the local power from the main ADC 8 Refer to the troubleshooting flow chart in Figure 1 3 for further details SCPI Command Expected return value a a Instrument setting Voltage 20 V Current 1 A Expected return value b b Instrument setting Voltage 500 V Current 8 A DIAG MEAS VO...

Page 36: ...sequence Swap the PFC module YES NO Check thecable connecting to thePFC Check thePFC rail voltageand PG signal Swap the PFC module NO Check that the biasing voltage 23 24 V goes into the isolation primary and secondary circuit Check that the microcontroller has been programmed with the correct firmware The MOSFET on the isolation board may be shorted Swap the isolation board NO Check thecable conn...

Page 37: ...dvanced Service Guide 37 RP7951A RP7952A RP7953A RP 7951AT RP7952AT N6991A 3 phase 208 V models Figure 1 4 Bias voltage test points for 3 phase 208 V models Isolation Brd Output 565Vdc PFC AC Output 425Vdc 425V and 10V PG goes into the Bias Brd ...

Page 38: ... RP7900 Series Advanced Service Guide RP7961A RP7962A RP7963A 3 phase 480 V models Figure 1 5 Bias voltage test points for 3 phase 480 V models Isolation Brd Output 565Vdc PFC AC Output 980Vdc 980V and 10V PG goes into the Bias Brd ...

Page 39: ...bly Procedures 43 This chapter discusses the disassembly procedures for troubleshooting and repairing the Keysight RP7900 Series Regenerative Power System WARNING SHOCK HAZARD Only qualified service trained personnel who are aware of the hazards involved should remove instrument covers Always disconnect the power cable and any external circuits before removing the instrument cover ...

Page 40: ...w as 50 volts The following guidelines will help prevent ESD damage when servicing the instrument or any electronic device Disassemble instruments only in a static free work area Use a conductive work area to reduce static charges Use a conductive wrist strap to reduce static accumulation Minimize handling Keep replacement parts in original static free packaging Remove all plastic foam vinyl paper...

Page 41: ... Torx driver All disassembles T20 Torx driver Removing the output and back plane assembly Flat blade driver Removing the fan bracket assembly from the chassis 7 mm Hex driver Removing the output and back plane assembly 8 mm Hex driver Removing the PFC control board 9 32 Hex driver Removing the GPIB board from the chassis ...

Page 42: ...lastic connector until the cable is released Remove the cable To install the FFC cable insert the cable into the slot in the connector Using a small screwdriver or your fingers apply gentle even pressure to the tabs until the connector clicks and locks the cable into place After installation check the cable to ensure the cable is straight and securely aligned within the connector Assembly procedur...

Page 43: ...s Removing the top chassis 1 First remove all cables wires or power cord that are connected to the instrument before performing any disassembly 2 Remove the 7 screws 0515 1946 on the top chassis of the instrument 3 Next remove the 3 screws 0515 0430 at the rear panel of the instrument ...

Page 44: ...s 0515 1946 on both sides of the instrument as shown below 5 Gently remove the top chassis cover 5003 2346 NOTE Ensure that a proper insulator is installed on the top cover If the existing insulator is damaged or worn out please replace the existing insulator with a new insulator 5188 9218 ...

Page 45: ...mbly 2 Keysight RP7900 Series Advanced Service Guide 45 Removing the PFC control board 1 First remove all the cables that are connected to the PFC control board 2 Next remove the 2 screws 0515 0430 shown below ...

Page 46: ... Keysight RP7900 Series Advanced Service Guide 3 Then unsecure the 2 screws 0515 0430 shown below from the chassis 4 Use an 8 mm Hex driver to remove the nut hex 0535 0077 and then remove the flat washer lock 2190 0629 ...

Page 47: ...Disassembly 2 Keysight RP7900 Series Advanced Service Guide 47 5 Flip the instrument to its bottom to remove the 5 screws 0515 1946 shown below 6 Finally pull out the PFC control board from the chassis ...

Page 48: ...nced Service Guide Removing the digital personality module PCA 1 First gently unlock the connector pin and pull out the digital personality module PCA 5067 5271 from its casing 2 Next remove the screw on the digital personality module PCA bracket ...

Page 49: ...Disassembly 2 Keysight RP7900 Series Advanced Service Guide 49 3 Then remove the screw securing the control PCA to the constellation bracket 4 Next remove the bias control cable ...

Page 50: ...ly 50 Keysight RP7900 Series Advanced Service Guide 5 Then remove the constellation FFC cable at the back of the digital personality module PCA 6 Finally remove the control insulator from the constellation bracket ...

Page 51: ...oving the isolation and isolation attic board top and bottom from the chassis 1 First remove the air guard insulator and cables from the isolation and isolation attic board 2 Next remove the 10 screws 0515 0430 shown below on the isolation PCA and isolation attic PCA ...

Page 52: ...es Advanced Service Guide 3 Then remove both PCAs from the chassis module by removing the 12 screws 0515 0667 shown below 4 Finally remove the 400 V isolation attic PCA 5067 6590 from the 400 V AC in isolation PCA 5067 6589 as shown below ...

Page 53: ...Disassembly 2 Keysight RP7900 Series Advanced Service Guide 53 Set aside the 400 V isolation attic PCA and the 400 V AC in isolation PCA ...

Page 54: ...de Removing the regulation magnitcs PCA from the regulation PCA 1 First remove the 8 screws 0515 0430 shown below securing the regulation magnitcs PCA to the regulation PCA 2 Next remove both PCAs from the chassis by removing the 12 screws 0515 0667 shown below ...

Page 55: ... Service Guide 55 3 Finally remove the regulation magnitcs PCA from the regulation PCA as shown below Removing the isolation partition insulator regulation and chassis module 1 First remove the isolation partition 5066 1924 from the chassis module ...

Page 56: ...56 Keysight RP7900 Series Advanced Service Guide 2 Next remove the insulator regulation 5188 9219 from the chassis module 3 Then remove the 6 screws 0515 0430 shown below securing the chassis module to the rear tray ...

Page 57: ... 2 Keysight RP7900 Series Advanced Service Guide 57 4 Flip over the chassis Remove the 8 screws 0515 1946 shown below securing the chassis module to the chassis 5 Finally remove the chassis module from the chassis ...

Page 58: ...mbly 58 Keysight RP7900 Series Advanced Service Guide Removing the output and back plane assembly 1 First remove the 2 screws 0515 0430 shown below 2 Next tear off the red and black labels on the output terminal ...

Page 59: ...Service Guide 59 3 Then remove the 2 screws 0515 0382 shown below to securing the bezel to the buss bar using a T 20 Torx driver and a 7 mm Hex driver The screws are secured using a nut hex 0535 1097 and a flat washer lock 3050 0893 as shown below ...

Page 60: ...y 60 Keysight RP7900 Series Advanced Service Guide 4 Remove the 2 screws 0515 0372 shown below securing the bezel plate 5066 1911 5 Finally pull out the output and backplane assembly from the chassis as shown below ...

Page 61: ...900 Series Advanced Service Guide 61 Removing the bias bracket from the chassis 1 First remove all the cables attached on this board 2 Next remove the bias bracket from the chassis by removing the 3 screws 0515 1946 shown below ...

Page 62: ...ervice Guide Removing the constellation and P600 assembly from the chassis 1 First remove the 3 screws 0515 1946 shown below securing the constellation and P600 assembly to the chassis 2 Next remove the constellation and P600 assembly from the chassis ...

Page 63: ... to replace the constellation and P600 assembly carefully remove the glue first before you remove the FFC cable When reconnecting the FFC cable to the constellation and P600 assembly reapply the glue on both sides of the cable using a glue gun to secure the FFC cable to the constellation and P600 assembly Ensure that the FFC cable is inserted properly before applying the glue ...

Page 64: ...s Advanced Service Guide Removing the GPIB board from the chassis 1 First remove the 2 standoff hex screws 0380 5630 shown below securing the GPIB board to the chassis using a 9 32 Hex driver 2 Next pull the GPIB board out from the chassis ...

Page 65: ...ght RP7900 Series Advanced Service Guide 65 Removing the IO board from the chassis 1 First remove the IO board from the chassis by removing the 2 screws 0515 0430 shown below 2 Next pull the IO board out from the chassis ...

Page 66: ...2 Disassembly 66 Keysight RP7900 Series Advanced Service Guide Removing the front panel from the chassis 1 First remove the FFC cable connected to the front panel display ...

Page 67: ...e front panel display connector via glue at both sides Carefully remove the glue first before you remove the FFC cable When reconnecting the FFC cable to the front panel display reapply the glue on both sides of the cable using a glue gun to secure the FFC cable to the front panel display connector ...

Page 68: ...2 Disassembly 68 Keysight RP7900 Series Advanced Service Guide 2 Next remove the AC switch cable 5188 9483 on the front panel 3 Then remove the screws on the right and left side of the front panel ...

Page 69: ...es Advanced Service Guide 69 4 Finally pull out the front panel from the chassis as shown below Removing the front frame vent from the chassis 1 First remove the 2 screws 0515 1103 on the right side and left side of the front frame vent ...

Page 70: ...Service Guide 2 Next pull out the front frame vent 5066 1923 as shown below Removing the fan bracket assembly from the chassis 1 First flip the chassis over and remove the 3 screws 0515 1946 shown below securing the fan bracket assembly to the chassis ...

Page 71: ...bly 2 Keysight RP7900 Series Advanced Service Guide 71 2 Remove the 2 screws 0515 1946 on the right side and left side of the fan bracket assembly as shown below 3 Remove the fan bracket assembly as shown below ...

Page 72: ...RP7900 Series Advanced Service Guide 4 Finally remove the 4 bumper feet 0403 1294 shown below using a flat blade driver NOTE You will need to use a mallet and a slot screwdriver to assemble back the 4 bumper feet to the chassis ...

Page 73: ...Disassembly 2 Keysight RP7900 Series Advanced Service Guide 73 ...

Page 74: ...2 Disassembly 74 Keysight RP7900 Series Advanced Service Guide ...

Page 75: ...eries Regenerative Power System Advanced Service Guide 75 3 Replaceable Parts RP7900 Replaceable Parts List 76 The following table documents the replaceable parts description Keysight part numbers and applicable models ...

Page 76: ...06 TESTED FRONT PANEL ASSEMBLY 5067 6764 TESTED MASTER SLAVE DISCONNECT PCA RP7951AT 60009 TESTED OUTPUT AND BACK PLANE ASSEMBLY 5KW RP7952AT 60012 TESTED OUTPUT AND BACK PLANE ASSEMBLY 10KW RP7953A 60002 TESTED OUTPUT AND BACK PLANE ASSEMBLY 10KW 950V 5067 6715 TESTED PCA BIAS HV TITIAN 5067 6728 TESTED PCA HV TITAN HV RAIL BIAS BOARD 480VAC 5067 6720 TESTED PCA DIGITAL PERSONALITY MODULE FOR TIT...

Page 77: ...6 NATURAL 5003 2343 CHASSIS BASE 1400 3414 CLAMP CABLE PRESSURE SENSITIVE ADHESIVE MOUNTING 1 062 IN LG 1 IN WIDE NORYL WHITE 5188 9511 CM CHOKE CABLE 1254 3092 CONNECTOR HEADER VERTICAL BOARD STACKER THROUGH HOLE 16 PIN 2 54MM 2 ROW 1254 3101 CONNECTOR HEADER VERTICAL BOARD STACKER THROUGH HOLE 4 PIN 2 54MM 2 ROW 1251 4669 CONNECTOR HEADER VERTICAL THROUGH HOLE 14 PIN 2 54MM 1500VAC 3A 2 ROW 1254...

Page 78: ... FOR N6991AT 5188 9507 LABEL SET FOR RP7951AT 5188 9508 LABEL SET FOR RP7952AT 5188 9518 LABEL SET FOR RP7951A 5188 9519 LABEL SET FOR RP7952A 5188 9524 LABEL SET FOR RP7953A RP7961A 80001 LABEL SET FOR RP7961A RP7962A 80001 LABEL SET FOR RP7962A RP7963A 80001 LABEL SET FOR RP7963A 1254 2876 MENTOR CONNECTOR HEADER VERTICAL SMT 34 PIN 2 54MM 2 ROW 1254 2880 MENTOR CONNECTOR HEADER VERTICAL SMT 70 ...

Page 79: ...ON 6 6 BLACK FINISH 0515 1103 SCREW MACHINE 90 DEG FLAT HD TORX T10 M3X0 5 10MM LG SST 300 PASSIVATED 0515 1946 SCREW MACHINE 90 DEG FLAT HD TORX T10 M3X0 5 6MM LG SST 300 PASSIVATED 0515 1142 SCREW MACHINE PAN HD TORX T20 M4X0 7 8MM LG SST 300 PASSIVATED 0515 0375 SCREW MACHINE W CREST CUP CON WASHER PAN HD TORX T10 M3X0 5 16MM LG SST 300 PASSIVATED 0515 2194 SCREW MACHINE W CREST CUP CON WASHER ...

Page 80: ...0 PASSIVATED FINISH 0515 0667 SCREW MACHINE WITH CREST CUP CON WASHER PAN HD TORX T10 M3X0 5 25MM LG SST 300 PASSIVATED 0515 2246 SCREW MACHINE WITH SQUARE DOME WASHER SLOTTED TORX T10 M3X0 5 8MM LG SST PASSIVATED 0380 5630 STANDOFF HEX MALE FEMALE 4 40 THD 7 1MM A F 8 6MM LG STEEL ZN PLATED BLACK 0380 4812 STANDOFF HEX MALE FEMALE M3X0 5 5 5MM A F 6MM LG SST 303 NATURAL FINISH 0380 1934 STANDOFF ...

Page 81: ...OCK EXT TOOTH TYP B 3 15MM ID 7 35MM OD 0 5MM THK SST PASSIVATED 2190 0586 WASHER LOCK HELICAL 4 1MM ID 7 6MM OD 0 9MM THK SST PASSIVATED 9010 0321 WINDOWS EMBEDDED COMPACT OTHER MOBILE 7 EMB ESD OEI C7P RUNTIME LICENSE Table 3 1 RP7900 replaceable parts list continued Keysight part number Description N6991AT RP7951AT RP7952AT RP7951A RP7952A RP7953A RP7961A RP7962A RP7963A ...

Page 82: ...3 Replaceable Parts 82 Keysight RP7900 Series Advanced Service Guide THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK ...

Page 83: ...tion is subject to change without notice Always refer to the Keysight website for the latest revision Keysight Technologies 2019 Edition 1 July 11 2019 Printed in Malaysia RP7900 90000 RP7900 90000 www keysight com ...

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