Manual de instrucciones de Agilent Technologies 4291B

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Agilent
4291B RF Impedance/Material Analyzer
SERVICE MANU
SERIAL NUMBERS
This manual applies directly instruments with serial
number prex JP1KE, rmware revision 01.00.
F or additional important information about serial numbers , read \ANAL YZERS
CO VERED THIS MANU AL" n i General nformation I this service manual.
Agilent P No . 04291-90111
Printed in JAP AN March 2001
art
of BY
or
to
AL

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Notice The information contained in this document is subject change without notice . This document contains proprietary information that is protected by copyright. rights reserved. No of this document may be photocopied, reproduced, or translated another language without the prior written consent Agilent T echnologies Company . Agilent T echnologies Japan, Ltd. Component T PGU-Kobe 1-3-2, Murotani, Nishi-ku, Kobe-shi, Hyogo , 651-2241 Japan c Copyright 1 998, 2000, 2001 Agilent T echnologies J

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Manual Printing History The manual printing date and part number indicate its urrentc edition. The printing date changes when a new edition printed. (Minor corrections a nd updates t hat are ncorporated i at reprint do not cause the change .) The manual part number changes when extensive technical changes are incorporated. January 1998 : : :: :: :: :: : : : : : : : : : : : : : : : : : :: :: :: :: : : : : : : : : : : : : : : : : : :: :: :: :: : : : : : : : : : : : First Edition 1998 : : : : :: ::

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Safety Summary The following general safety precautions must be observed during a ll phases of operation, service , and repair of this instrument. F ailure o t w these precautions or with specic W ARNINGS given elsewhere this manual violates safety standards of design, manufacture , and intended use of the instrument. The A gilent T echnologies ompany C assumes o n liability for the ustomer’s c failure to comply with these requirements . 4291B comply with ALLA TION CA TEGORY II and POLLUTION DE

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DO Substitute P arts Or Modify Instrument Because the danger of introducing additional hazards , do not s ubstitute parts o r perform unauthorized modications the instrument. Return instrument to a Agilent T echnologies Sales and Service Oce for service and repair to ensure the s afety features are maintained. Dangerous Procedure W arnings W arnings , such as the example below , precede potentially dangerous procedures throughout this manual. Instructions contained in the warnings must followe

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Typeface Conventions Bold Boldface type used when a term is dened. F or example: icons symbols . Italics Italic type is used for emphasis and titles of manuals and other publications . Italic type is also used for keyboard entries when a name a must be typed in place of the words italics . F example: copy lename means type the word copy , type a space , and t hen to type the name of a le such as file1 . Computer Computer font is used for on-screen prompts and messages . Labeled keys instr

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Certication Agilent T echnologies Company certies that this product met ts i published specications at the time of shipment from the factory . Agilent T echnologies further certies that its calibration measurements are traceable to the United States National Institute of Standards T echnology , to the extent allowed by the nstitution’s I calibration facility ,or to the calibration facilities of other International Standards Organization members . W arranty This Agilent T echnologies instrume

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Exclusive Remedies The remedies provided herein are b uyer’s sole and exclusive remedies .A gilent T echnologies shall not be liable for any direct, indirect, special, incidental, or consequential damages , whether based on contract, tort, or any o ther legal theory . Assistance Product maintenance agreements and other customer assistance agreements are available for Agilent T echnologies products . F any assistance , contact your nearest Agilent T echnologies Sales a nd Service O ce . A ddress

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Contents 1. General Information INTRODUCTION . . . . . . . . . . . . . . . . . . .. .. .. . . . . . . . 1-1 ORGANIZA TION SERVICE MANU . . . . . . . . . . . . . .. .. .. . 1-1 ANAL YZERS CO VERED BY MANU AL . . . . . . . . . . . . .. .. .. .. . 1-3 T ABLE SERVICE TEST EQUIPMENT . . . . . . . . . . . . . .. .. .. . 1-4 2. P erformance T ests INTRODUCTION . . . . . . . . . . . . . . .. .. .. .. . . . . . . . . . 2-1 GENERAL INFORMA TION . . . . . . . . . . . . . . .. .. . . . . . . . . 2-1 W Up Ti

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Norm-T emp High-Impedance T est Head . . . . . . . . . . . . .. .. .. 2-20 Norm-T emp Low-Impedance T est Head (Option 012) . . . . . . .. .. .. High-T emp High-Impedance T est Head (Option 013) . . . . . . .. .. .. High-T emp Low-Impedance T est Head (Option 014) . . . . . . . . .. .. . Measurement A ccuracy T est . . . . . . . . . . . .. .. .. .. .. .. . 2-23 Norm-T emp High-Impedance T est Head . . . . . . . . . . .. .. .. .. 2-23 Norm-T emp Low-Impedance T est Head (Option 012) . . . . . . .

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Procedure .. .. .. . . . . . . . . . . . .. .. .. .. .. .. .. . . 3-22 BIAS LEVEL CORRECTION CONST ANTS (OPTION Y) . . . . .. .. Procedure .. . . . . . . . . . . . .. .. .. .. .. .. .. . . . . . . 3-24 10 MHz REFERENCE OSCILLA TOR FREQUENCY ADJUSTMENT (OPTION ONL Y) . . . . . . . . . . . . . . .. .. .. .. .. .. . . . . . . . . 3-25 Required Equipment . . . . . . . . . . . . . . .. .. .. .. .. .. . . 3-25 Procedure . . . . . . . . . . . . . .. .. .. .. . . . . . . . . . . . . 3-25 4. Overall Trou

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4. Remove Assemblies .. .. . . . . . . . . . . . .. .. .. .. .. .. TROUBLESHOOT THE F AN THE DC-DC CONVERTER . . . . . .. . 5-14 1. Troubleshoot the F an . . . . . . . . . .. .. .. .. .. .. .. . . . 5-14 2. Troubleshoot the A50 DC-DC Converter . . . . . . . . . . .. .. .. . TROUBLESHOOT THE A2 POST-REGULA TOR . . . . . . . . . . . .. .. .. 1. Check he t A40 Pre-Regulator . . . . . . . . . . . .. .. .. .. .. . 2. Check the A50 DC-DC Converter . . . . . . . . .. .. .. .. . . . . . 3. Remove Assemb

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Check he t A3A3 RF Signal . . . . . . . . . . . . .. .. .. .. .. .. 7-27 A7 OUTPUT A TTENU A TOR CONTROL SIGNALS . . . . . .. .. .. . 7-29 Check A7 Control Signals . . . . . . . . . .. .. .. .. .. .. .. . 7-29 C D BIAS 1/2 OUTPUT . . . . . . . . . . .. .. .. .. .. .. Check A22 Output V oltages . . . . . . . . . . .. .. .. .. .. .. . 7-31 THE A60 HIGH ST ABILITY FREQUENCY REFERENCE . . . . . . . . . 7-33 8. Receiver Troubleshooting INTRODUCTION . . . . . . . . . . . . . . . .. .. .. . . . . . . .

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11: A3A1 DIVIDER .. .. . . . . . . . . . . . .. .. .. .. .. .. 12: A6 3RD LO . . . . . . . . . .. .. .. .. .. .. .. . . . . 13: A3A1 SOURCE OSC . . . . . . . . . . .. .. .. .. .. .. .. . 14: A6 SEQUENCER . . . . . . . . . . . . . .. .. .. .. .. .. . . 15: SOURCE LEVEL . . . . . . . . . . . . . .. .. .. .. .. .. . . 16: DC BIAS . . . . . . . . . . . . . .. .. .. .. .. .. . . . . . N NN N N N N N N N N N N N NN NN NN NN NN NN N N N N N N N N N N N N TESTS . . . . . . . . . . . . .. .. .. .. . . .

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N N N N N N N N N N NN NN NN NN NN NN NN N N N N N N N N WAIT ( :DIAG:SERV:BUS:WAIT < numeric > ) .. .. .. .. .. .. . 10-18 Bus Measurement . .. . . . . . . . . . . . .. .. .. .. .. .. .. . Bus Measurement Procedure .. . . . . . . . . . . . .. .. .. .. .. . Bus Measurement V alues . . . . . . . . . . . . . . .. .. .. .. .. .. Bus Node Descriptions . . . . . . . . . . .. .. .. .. .. .. . . . 0: OFF . . . . . . . . . . . . .. .. .. .. .. .. .. . . . . . . . 10-19 1: +5 V (A (2.025 U) . . . . . . .

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OSC CONTROL MENU .. .. . . . . . . . . . . . .. .. .. .. .. .. . N NN NN N N N N N N N N N N N NN NN NN NN NN N N N N N N N N AUTO man ( :DIAG:SERV:SOUR:MODE {AUTO|MAN} ) . . . . . . . .. .. . NN N N N N N N N N N N N NN NN NN NN NN NN NN N N N N N N N N N N N NN NN NN OUTPUT [ ] ( :DIAG:SERV:SOUR:ATT {AUTO|DB0|DB10|DB20|DB30|DB40|DB50|DB60} ) . . . . . . .. .. .. . NN N N N N N N N N N N N N N NN NN NN NN NN NN N N N N N N N N N N N N N NN NN NN D ( :DIAG:SERV:SOUR:LEV:DAC:MODE {AUTO|MAN} ) . .

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Front-P anel Keyboard . .. . . . . . . . . . . . .. .. .. .. .. . 11-10 I/O Connector . . . . . . . . . . . .. .. .. .. .. .. .. . . . . 11-10 ASIC Interface . . . . . . . . . . .. .. .. .. .. .. .. . . . 11-10 . . . . . . . . . . . . . . .. .. .. .. .. .. . . . . . . . 11-11 LCD ( Liquid Crystal Display) . . . . . . . . . . . .. .. .. .. .. . . . . . . . . . . . . . . . .. .. .. .. .. .. . . . . . . . 11-11 Inverter . . . . . . . . . . . . .. .. .. .. . . . . . . . . . . . 11-11 SOURCE THEORY .

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Replacement Procedures INTRODUCTION .. . . . . . . . . . . . .. .. .. .. .. .. .. . . . . 13-1 TOP CO REMO V AL . . . . . . . . .. .. .. .. .. .. .. . . . . . . T ools Required . . . . . . . . . . . . . .. .. .. .. .. .. . . . . . . Procedure .. . . . . . . . . . . . . . .. .. .. .. .. .. . . . . . . BOTTOM CO REMO V AL . . . . . . . . . . .. .. .. .. .. .. . . . 13-1 T ools Required . . . . . . . . . . . .. .. .. .. . . . . . . . . . . . . Procedure . . . . . . . . . . . . . .. .. .. .. . . . .

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T ools Required .. .. . . . . . . . . . . . .. .. .. .. .. .. .. . . 13-15 Removal Procedure . . . . . . . . . . . . .. .. .. .. .. .. .. . . 13-15 Replacement Procedure . . . . . . . . . . . . .. .. .. .. .. .. .. 13-15 LCD REPLA CEMENT . . . . . . . . . . . . .. .. .. .. .. .. . . 13-16 Removal Procedure . . . . . . . . . . . . . . .. .. .. .. .. .. . . 13-16 FDD REPLA CEMENT . . . . . . . . . . . . .. .. .. .. .. .. . . 13-16 T ools Required . . . . . . . . . . . .. .. .. .. . . . . . . . . .

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Figures 1-1. Serial Number Plate . . . . . . . . . . . . . . . . . .. .. .. . . . . . 1-3 2-1. Frequency A ccuracy T Setup . . . . . . . . . . . . . . .. .. .. . . . 2-4 2-2. OSC Level A ccuracy T Setup . . . . . . . . . . . . . .. .. .. . . . . 2-6 2-3. Measurement A ccuracy T est Setup . . . . . . . . . . . . . . .. .. .. . 2-9 2-4. Sweep List for Measurement A ccuracy T est . . . . . . . . . . . . .. .. . 2-10 2-5. 10 cm Airline with Open Measurement T est Setup . . . . . . . .. .. .. . 2-6.