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Agilent Technologies E8401A User And Service Manual Download Page 48

46

Servicing Your Mainframe

Chapter 3

Removing the

Mainframe Cover

1. Turn off the mainframe and remove the power cord.

2. Remove the rear panel. Refer to “Removing the Rear Panel from the 

Mainframe” on page 45 for instructions.

3. Remove the mainframe cover by removing the ten m3x6 flat head 

torx screws (five on each side of the mainframe). Refer to Figure 3-2.

Figure 3-2. Removing the Mainframe Cover

Remove 5 screws from each side.

Summary of Contents for E8401A

Page 1: ...d Wide Web at http www agilent com find products For related information System installation hardware software VXIbus Configuration Guide Supplied with Agilent Command Module Embedded Controllers and...

Page 2: ......

Page 3: ...ing C Size Instruments 11 Installing A and B Size Instruments 12 Front Panel Features 13 Diagnostic Connector 14 5VC pin 6 15 12VC pin 7 15 5V STDBY pins 8 21 15 SYSRESET pin 10 15 ACFAIL pin 23 15 Us...

Page 4: ...Cover 46 Replacing the Basic Monitor Board 47 Replacing the Agilent E8401A Power Supply 48 Replacing the Agilent E8403A Power Supply 49 Replacing the Impeller 50 Replacement Power Cords 51 Appendix A...

Page 5: ...O THE EXTENT ALLOWED BY LOCAL LAW THE ABOVE WARRANTIES ARE EXCLUSIVE AND NO OTHER WARRANTY OR CONDITION WHETHER WRITTEN OR ORAL IS EXPRESSED OR IMPLIED AND AGILENT SPECIFICALLY DISCLAIMS ANY IMPLIED W...

Page 6: ...repaired fuses or short circuited fuse holders Keep away from live circuits Operating personnel must not remove equipment covers or shields Procedures involving the removal of covers or shields are fo...

Page 7: ...to obtain the Declaration of Conformity Go to http regulations corporate agilent com DoC search htm You can then search by product number to find the latest Declaration of Conformity Alternately you...

Page 8: ...6 Notes...

Page 9: ...al features of the Agilent E840xA mainframes include Mainframe monitoring for verification of backplane voltage conditions mainframe temperatures fan and impeller operation State of the art cooling te...

Page 10: ...accessible to the operator at all times When the Agilent E840xA mainframes are mounted in a system cabinet the power cord need not be accessible since the cabinet must have its own disconnect device P...

Page 11: ...ounding lug and toothed washers or toothed lug as shown in the Figure 2 Attach the other end of the wire to a permanent earth ground using toothed washers or a toothed lug WARNING For protection from...

Page 12: ...nts which combine to create a virtual instrument e g a scanning multimeter and instruments which access the backplane local bus should be installed in adjacent slots 1 To prevent damage to the VXI ins...

Page 13: ...frame chassis During installation tighten the instrument s retaining screws to secure the instrument to the mainframe and to make the ground connection Figure 1 2 Installing C Size Instruments in the...

Page 14: ...ly devices which have the P1 connector Agilent E1407A A B Module Carrier extends the P1and P2 connectors on the VXIbus backplane This carrier is recommended for B Size slave only devices which have th...

Page 15: ...e cooling fans are operating at full speed Var iable the power supply and mainframe cooling fans are providing adequate cooling default setting Fan speed is a function of the power supply temperature...

Page 16: ...0 C with a rise of 10 mV per degree centigrade 12 Ref Temp Output voltage proportional to backplane temperature 0 VDC at 0 C with a rise of 10 mV per degree centigrade A function of the ambient temper...

Page 17: ...d other circuits when the mainframe is in standby mode SYSRESET pin 10 This pin provides an extension of the VXI backplane SYSRESET signal line It can be used to monitor for SYSRESET or to send a SYSR...

Page 18: ...ont panel On Stdby switch With the On Stdby switch in the Stdby off position connecting pin 5 to pin 18 on the diagnostic connector turns the mainframe on Disconnecting pin 5 from pin 18 turns the mai...

Page 19: ...sistor heat damage may prevent the resistor from being re installed to re enable the On Stdby switch To access the basic monitor board and resistor 1 Turn off the mainframe and remove the power cord 2...

Page 20: ...m the board by gently pressing the tips of the soldering irons together 5 Save the resistor in order to re enable the On Stdby switch Again heat damage may prevent the resistor from being re installed...

Page 21: ...Adapter Kit for recess flush or forward rack mounting Option 923 Agilent E8400 80923 Flush Rack Mount Kit Option 924 Agilent E8400 80924 VXIplug play VPP 8 Compatible Rack Mount Kit Option 925 Agilen...

Page 22: ...20 Getting Started Chapter 1...

Page 23: ...standard EIA cabinets using the rack mount adapter options and support rail or rack slide kit shown in Table 2 1 When rack mounting the mainframe you must order an adapter option and the rail or rack...

Page 24: ...6 4 Adapter to Mainframe Screws m5x8 pan head 0515 0979 4 Adapter Dress Screws 0570 1577 4 Channel Nuts for adapter dress screws 0590 0804 Agilent E840xA VXIplug play Compliant Adapter Option 925 kit...

Page 25: ...is only compatible with Agilent cabinets The following procedures apply to all adapters with adapter specific information noted where necessary Note If you ordered Cable Tray Option 914 refer to page...

Page 26: ...using the Agilent E840xA VXIplug play Compliant adapters Option 925 position the adapters such that all three mounting holes are directly over holes on the rack s vertical rails and that the adapter...

Page 27: ...he support rails must be positioned behind the bottom channel nuts installed in Step 3 Figure 2 3 Use four channel nuts and the four 0 5x10 32 support rail to rack pan head screws to secure the rail F...

Page 28: ...23 the mainframe can be recess mounted up to 270 7 mm 10 6 inches or extended out from the rack up to 147 6 mm 5 8 inches in 12 3 mm approximately 1 2 inch increments The rack mount adapters for the V...

Page 29: ...on contains instructions for mounting the Agilent E840xA mainframe in an EIA cabinet using the rack slide kit p n 1494 0411 The rack slide kit which is used with either the Standard adapters Option 92...

Page 30: ...r holes over center holes on the vertical rail Figure 2 6 Note If you are using the Agilent E840xA VXIplug play Compliant adapters Option 925 position the adapters such that all three mounting holes a...

Page 31: ...le on the inside vertical rail Figure 2 7 Install a second channel nut on the inside rail four holes above the first nut Repeat for the other rail Install channel nuts on the corresponding holes on th...

Page 32: ...tion will be connected to the mainframe in Step 7 Slide the intermediate section back into the stationary section Figure 2 7 Positioning the Rack Slides using Option 923 standard adapters Left Vertica...

Page 33: ...9 Figure 2 8 Removing the Rack Slide Chassis Section from the Intermediate Section Depress From Back Side To Remove Rack Front Rack Rear Stationary Section Stationary Section Chassis Section Right Ra...

Page 34: ...screw attaching the rack slide adapter may have to be removed 8 Attach the chassis sections to the rack mount adapters using four m5x8 flat head screws per side Figure 2 10 9 If additional rack space...

Page 35: ...or when mounted in a standard EIA cabinet The tray is compatible with the support rail Agilent E3664A and rack slide Agilent p n 1494 0411 kits Note If you ordered the support rail Agilent E3664A or r...

Page 36: ...tomer supplied interface panel The maximum height of the panel must be 41 275 mm for a one EIA rack unit cable tray position or 85 725 mm for a two EIA rack unit cable tray position The panel width ca...

Page 37: ...r bottom openings only Procedure 1 Recess mount the mainframe a minimum of 111 mm 4 36 inches using the Standard Adapter kit and either the support rail kit page 23 or rack slide kit page 27 Note For...

Page 38: ...for squareness and clearance by holding the door in place while tightening the dress screws 6 Adjust the latch keeper so that the door latches as it makes contact with the rubber door stops Note Once...

Page 39: ...hassis shield guides Figure 2 13 Chassis shields should be installed on both sides of an instrument generating interference noise or installed on both sides of a sensitive instrument 1 Insert groundin...

Page 40: ...nd Option Installation Chapter 2 Figure 2 13 Installing the Grounding Springs and Chassis Shield VXI module guide grounding spring socket chassis shield guide use a small screw driver to secure spring...

Page 41: ...mpliance with EN55011 and CISPR11 Refer to the instrument documentation to determine if shields are required WARNING Do not install backplane connector shields while the mainframe is turned on or plug...

Page 42: ...each into the mainframe Placing a sheet of paper under the backplane connectors will catch screws if they fall 3 Tighten the screws by turning them clockwise The screws are thread forming and will go...

Page 43: ...l the bottom Air Filter Bracket as shown Use the two pan head screws included with the Air Filter Kit 3 Install the Air filter Carefully place the filter into the bottom bracket 4 Attach the top brack...

Page 44: ...42 Rack Mounting and Option Installation Chapter 2...

Page 45: ...air of the Agilent E840xA mainframes is limited to replacement of the Basic Monitor printed circuit PC assembly power supply and impeller module fan assemblies WARNING There are no serviceable parts i...

Page 46: ...ashing Fans Indicator Power supply fan or mainframe impeller has failed Visually inspect to determine which fan is not rotating Turn off mainframe to avoid possible overheating Power supply fans are n...

Page 47: ...the 14 screws from the rear panel 2 The rear panel hinges at it top rotate the panel upward Pull the panel out from the mainframe 3 To replace the panel insert the three tabs into the slots at the top...

Page 48: ...cord 2 Remove the rear panel Refer to Removing the Rear Panel from the Mainframe on page 45 for instructions 3 Remove the mainframe cover by removing the ten m3x6 flat head torx screws five on each s...

Page 49: ...me Refer to Figure 3 3 4 Remove the two male female standoffs connecting the Diagnostic connector to the mainframe chassis 5 Remove the ribbon cable and the two m3x8 torx screws from the basic monitor...

Page 50: ...e on page 45 for instructions 3 Gently pull the supply out from the connectors on the backplane adapter board 4 Install the exchange power supply Keep the replacement power supply to the far right in...

Page 51: ...rings on the power supply gently pull the supply out from the plastic connectors on the backplane adapter board Do not carry the supply using the rings 4 Install the exchange power supply Keep the rep...

Page 52: ...Figure 3 6 Note the position of the connector for re installation Caution Static sensitive components on the mainframe backplane are exposed when the impeller cover is removed Use care when removing...

Page 53: ...r use a cord with the same voltage and current ratings Power cords supplied by Agilent have polarities matched to the power input socket on the instrument L line or active conductor also called live o...

Page 54: ...52 Servicing Your Mainframe Chapter 3...

Page 55: ...the Agilent E1403 or E1407 Adapters Mainframe Dimensions Height 352 mm 13 9 inches 8 EIA rack units Width 424 5 mm 16 7 inches Depth 631 mm 24 9 inches Weight with no modules installed E8401A approxim...

Page 56: ...down b Total output before thermal protection shutdown or safety limitation E8401A E8403A Voltage Peak Current IMP a b Dynamic Current IMD a c Peak Current IMP a b Dynamic Current IMD a c 5V 50A 5A 90...

Page 57: ...voltage 90VAC the mainframe may not turn on properly Total Input Power may be estimated by the following expression 1 4 Output Power 70W Notes Total Power Input in Watts or VA Power Factor Corrected O...

Page 58: ...ng back pressure performance insures airflow through dense modules Separate power supply cooling fan s provides an independent air path for reliable cooling of power supply Cooling Specification Chart...

Page 59: ...Speed Mode Fan Speed increments through 5 discrete speeds as a function of power supply temperature and reference temperature Reference temperature pins 11 12 of Diagnostic Connector is measured on t...

Page 60: ...ace mount construction and no sockets for maximum reliability Basic Monitor Specifications Indicators Power Stdby Glows amber in Standby and line connected Power On Glows green when On Monitor Supply...

Page 61: ...ature Range 0 C to 55 C Storage Temperature Range 40 C to 75 C Humidity Operating Humidity Range Up to 95 RH from 0 C to 40 C Up to 65 RH from 40 C to 55 C Storage Humidity Range Up to 95 RH from 0 C...

Page 62: ...ailable Chassis Shield Kit E8400 80919 per VXI Specification Rev 1 4 B 7 3 4 The chassis shield is used to provide additional isolation or shielding between noisy or sensitive modules This may be usef...

Page 63: ...ode is full shutdown Recovery occurs when the fault condition is removed and power of on standby is cycled Repair Diagnosis and Troubleshooting through the front panel monitor and connector MTTR Power...

Page 64: ...62 Agilent E8401A E8403A Appendix A...

Page 65: ...nd connection 9 Environmental Specifications 59 F Front Panel 13 Fuse 43 G General Specifications 53 grounded shielding 37 grounding the mainframe 9 I Input Power Requirements 55 installing the backpl...

Page 66: ...monitor board 47 replacing the impeller 50 replacing the power supply 48 49 restricted rights statement 3 S slide rails 27 Specifications 53 Acoustical Noise 58 Airflow Path 58 Backplane 58 Basic Moni...

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