Agilent Technologies 35670A Service Manual

Agilent TechnologiesAgilent 35670A Dynamic Signal AnalyzerSupplement to Installation, Service and Operator’s Guide

10 Agilent 35670A Supplement2 Installation and Verification GuidePreparing the Analyzer for UseTo connect the analyzer to an external monitorThe Exter

11Agilent 35670A Dynamic Signal AnalyzerSupplement to Installation, Service and Operator’s GuideAgilent Technologies3Operator’s GuideChanges in this g

12 Agilent 35670A Supplement3 Operator’s GuideFormatting the DisplayTo control the screenDisregard item 2. Display brightness is no longer adjustable.

13Agilent 35670A Dynamic Signal AnalyzerSupplement to Installation, Service and Operator’s GuideAgilent Technologies4Service GuideThe CPU board has a

14 Agilent 35670A Supplement4 Service GuidePreparing the Analyzer for UseAC Power Cable and Grounding RequirementsNew power cable illustration shows n

Service Guide 4Agilent 35670A Supplement 15To connect the analyzer to an external monitorThe External Monitor is a standard 15- pin miniature connecto

16 Agilent 35670A Supplement4 Service GuideTroubleshooting the AnalyzerTo perform initial verificationNew illustrations for component locators show ne

Service Guide 4Agilent 35670A Supplement 17Figure 5 A17 CPU board test point locatorP17P11TP202Pin-out commonto all 36-pinconnectors

18 Agilent 35670A Supplement4 Service GuideReplace Step 7: Check signals required for power up.• Using a logic probe, check the following signals.• Us

Service Guide 4Agilent 35670A Supplement 19To troubleshoot the power supplyStep 5: Replace the bullet concerning reconnecting assemblies:• Reconnect o

2 Agilent 35670A SupplementNotices© Agilent Technologies, Inc. 2002, 2003, 2006No part of this manual may be reproduced in any form or by any means (i

20 Agilent 35670A Supplement4 Service GuideTo troubleshoot power-up failuresReplace the first five rows of the table:Page in original guide 4-15Failin

Service Guide 4Agilent 35670A Supplement 21To troubleshoot CPU, memory and buses failuresStep 1: Disregard references to Memory Assembly and incorpora

22 Agilent 35670A Supplement4 Service GuideTo troubleshoot display failuresReplace entire sectionUse this test to isolate display failures to the A101

Service Guide 4Agilent 35670A Supplement 23✔Step 3. Determine the probable faulty assembly by comparing the analyzer’s symptoms to the following table

24 Agilent 35670A Supplement4 Service GuideTo troubleshoot IIC bus failuresA new illustration above step 2 shows new connector pin- outs:✔ Step 2. Che

Service Guide 4Agilent 35670A Supplement 25• If no error messages are displayed after Booting System or A17 DS101 (green run LED) is off, go to page 4

26 Agilent 35670A Supplement4 Service GuideTo troubleshoot fast bus failuresNew table:New illustration showing location of motherboard connector pins.

Service Guide 4Agilent 35670A Supplement 27To troubleshoot memory or battery failuresReplace the last five bulleted items:• If the date is 01- 01-01,

28 Agilent 35670A Supplement4 Service GuideAdjusting the AnalyzerAdjusting the analyzerDelete the first row of the table referring to frequency refere

Service Guide 4Agilent 35670A Supplement 29Replacing AssembliesWhat to do before replacing the CPU assemblyThe EEPROM is now U111 on the A17 CPU assem

Agilent 35670A Supplement 3In This SupplementPurposeThe purpose of this supplement is to describe changes to the display of the Agilent 35670A. These

30 Agilent 35670A Supplement4 Service GuideWhat to do after replacing an assemblyThe rows referring to A7 CPU, A8 Memory, and A9 NVRAM are replaced wi

Service Guide 4Agilent 35670A Supplement 31To re move CP UNew illustration in step 3 showing an additional cable:Page in original guide 6-11Figure 14

32 Agilent 35670A Supplement4 Service GuideTo re move NV RA MDisregard this section. The NVRAM is now on the CPU board.To remove memoryDisregard this

Service Guide 4Agilent 35670A Supplement 33Replaceable PartsAssembliesReference designator A17 replaces A7, A8 and A9. There is also a replacement mot

34 Agilent 35670A Supplement4 Service GuideCablesDisregard Memory and NVRAM sections of block diagram.Four new cables have been added:Instrument Cover

Service Guide 4Agilent 35670A Supplement 35Front Panel PartsThree parts have been replaced and a new one added:Page in original guide 7-9Figure 16 Fro

36 Agilent 35670A Supplement4 Service GuideRear Panel PartsOne part has been replaced:Chassis PartsTwo parts have been replaced:Miscellaneous PartsOne

Service Guide 4Agilent 35670A Supplement 37Circuit DescriptionsOverall Block DiagramThe Memory and NVRAM assemblies are now incorporated into the CPU

38 Agilent 35670A Supplement4 Service GuideFigure 18 Four channel overall block diagram

Service Guide 4Agilent 35670A Supplement 39A7 CPUThis is now the A17 CPU. Delete all references to A8 memory and A9 NVRAM as separate assemblies since

4 Agilent 35670A Supplement

40 Agilent 35670A Supplement4 Service GuideFigure 19 A17 CPU Block DiagramI/O DEVICESReset Logicand VoltageSupervisorS5Battery Backed SRAMABANDBattery

Service Guide 4Agilent 35670A Supplement 41Figure 20 CPU Block Diagram: InterfaceDisplayControllerVideoGateArrayFrame Buffer1Frame Buffer2VideoDACBuff

42 Agilent 35670A Supplement4 Service GuideReset logic all references to S2 are changed to S5 and there is a new block diagram.IIC (Inter_IC) controll

Service Guide 4Agilent 35670A Supplement 43A8 MemoryThe memory has been incorporated into the CPU board. Therefore, the information in the sections on

44 Agilent 35670A Supplement4 Service GuideVoltages and SignalsVoltages and SignalsThe references in the table to A8 Memory and A9 NVRAM are deleted s

Service Guide 4Agilent 35670A Supplement 45Assembly Locations and ConnectionsPage in original guide 9-3,4,5Figure 22 Assembly locationsPower InverterA

46 Agilent 35670A Supplement4 Service GuideFigure 23 Assembly connections for two-channel analyzerPowerInverterLCDand memoryA17CPUBacklightsCCFL

Service Guide 4Agilent 35670A Supplement 47Figure 24 Assembly connections for four-channel analyzerand memoryA17CPUPowerInverterLCDBacklightsCCFL

48 Agilent 35670A Supplement4 Service GuidePower Supply Voltage DistributionIn the table the references to paths to the A8 and A9 boards is deleted si

Service Guide 4Agilent 35670A Supplement 49A9 NVRAMThe NVRAM is in now incorporated into the A17 CPU board and the following information should be tra

Agilent 35670A Supplement 5Contents1OverviewSummary of Changes 8Display 8Rear panel 8Board revisions 82 Installation and Verification GuidePreparing t

50 Agilent 35670A Supplement4 Service GuideA101 DisplayThe following table lists signals routed between the A17 board and the LCD display assembly. Al

Service Guide 4Agilent 35670A Supplement 51A102 DC-DC ConverterThis assembly is now a Power Inverter.The following table lists signals routed between

52 Agilent 35670A Supplement4 Service Guide

6 Agilent 35670A SupplementWhat to do before replacing the CPU assembly 29What to do after replacing an assembly 30To r e m o v e C P U 31To r e m

7Agilent 35670A Dynamic Signal AnalyzerSupplement to Installation, Service and Operator’s GuideAgilent Technologies1OverviewThe changes to the Agilent

8 Agilent 35670A Supplement1 OverviewSummary of ChangesDisplayChanges in the display will be imperceptible to most users. The changes are mainly at th

9Agilent 35670A Dynamic Signal AnalyzerSupplement to Installation, Service and Operator’s GuideAgilent Technologies2Installation and Verification Guid