Agilent Technologies 35670A Service And Operator's Manual
Dynamic signal analyzer
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Summary of Contents for Agilent Technologies 35670A
- Page 1 Agilent 35670A Dynamic Signal Analyzer Supplement to Installation, Service and Operator’s Guide Agilent Technologies...
- Page 2 Printed in Malaysia herein. Should Agilent and the user have a Agilent Technologies, Inc. separate written agreement with war- 3501 Stevens Creek Blvd. ranty terms covering the material in this...
- Page 3 MY42506200 made after December 2002. Most users of the Agilent 35670A will see few or no changes in the operation of the instrument. The changes apply to specific sections of the Agilent 35670A Operator’s Guide, the Agilent 35670A Installation and Verification Guide, and the Agilent 35670A Service Guide.
- Page 4 Agilent 35670A Supplement...
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Page 5: Table Of Contents
To troubleshoot display failures To troubleshoot IIC bus failures To troubleshoot fast bus failures To troubleshoot memory or battery failures Adjusting the Analyzer Adjusting the analyzer To adjust the frequency reference To adjust the display voltage Replacing Assemblies Agilent 35670A Supplement... - Page 6 Overall Block Diagram A7 CPU A8 Memory A9 NVRAM A102 DC-DC Converter Voltages and Signals Voltages and Signals Assembly Locations and Connections Power Supply Voltage Distribution A8 Memory A9 NVRAM A99 Motherboard A101 Display A102 DC-DC Converter Agilent 35670A Supplement...
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Page 7: Overview
Agilent 35670A Dynamic Signal Analyzer Supplement to Installation, Service and Operator’s Guide Overview The changes to the Agilent 35670A Dynamic Signal Analyzer will not be noticeable to most users. The changes covered in the supplement include: • new display • new CPU board that also incorporates the memory and NVRAM boards •... -
Page 8: Summary Of Changes
• A8 (memory) in now incorporated into A17 • A9 (NVRAM) in now incorporated into A17 and is no longer an option These are global changes and will not be noted in each instance to avoid a large number of insignificant changes. Agilent 35670A Supplement... -
Page 9: Installation And Verification Guide
Agilent 35670A Dynamic Signal Analyzer Supplement to Installation, Service and Operator’s Guide Installation and Verification Guide The Agilent 35670A has incorporated a standard VGA monitor output and is now compatible with most monitors. Agilent Technologies... -
Page 10: Preparing The Analyzer For Use
Signal Name Signal Name Number Number Number red analog output Ground Not connected green analog output Ground Not connected blue analog output Ground TTL Horizontal Sync not connected Not connected TTL Vertical Sync Ground Ground Not connected Agilent 35670A Supplement... -
Page 11: Operator's Guide
Agilent 35670A Dynamic Signal Analyzer Supplement to Installation, Service and Operator’s Guide Operator’s Guide Changes in this guide include display attributes (resolution, size, brightness) and external monitor connections. Agilent Technologies... -
Page 12: Formatting The Display
Operator’s Guide Formatting the Display To control the screen Page in original guide 2-4 Disregard item 2. Display brightness is no longer adjustable. Agilent 35670A Supplement... -
Page 13: Service Guide
Agilent 35670A Dynamic Signal Analyzer Supplement to Installation, Service and Operator’s Guide Service Guide The CPU board has a new number (A17) and is a consolidation of the original CPU assembly (A7), memory assembly (A8) and the Non- Volatile RAM option board (A9). Memory options are now standard. -
Page 14: Preparing The Analyzer For Use
Service Guide Preparing the Analyzer for Use AC Power Cable and Grounding Requirements Page in original guide 2-4 New power cable illustration shows new number for United Kingdom Option 900 cable. 8709 Figure 3 Power cables Agilent 35670A Supplement... -
Page 15: To Connect The Analyzer To An External Monitor
Signal Name Signal Name Number Number Number red analog output Ground Not connected green analog output Ground Not connected blue analog output Ground TTL Horizontal Sync not connected Not connected TTL Vertical Sync Ground Ground Not connected Agilent 35670A Supplement... -
Page 16: Troubleshooting The Analyzer
Service Guide Troubleshooting the Analyzer To perform initial verification Page in original guide 4-5 New illustrations for component locators show new test points and new connector locations: Agilent 35670A Supplement... - Page 17 Service Guide Pin-out common to all 36-pin connectors TP202 Figure 5 A17 CPU board test point locator Agilent 35670A Supplement...
- Page 18 • Using a logic probe, check that A17 P10 pin B20 (SCL) and A17 P10 pin C11 (SDA) toggle TTL states at least twice just after power up. • If the signals are correct, go to page 4- 15, “To troubleshoot power- up failures.” Agilent 35670A Supplement...
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Page 19: To Troubleshoot The Power Supply
A11 Keyboard Controller (Cable to A17 P1) A100 Disk Drive (cable to A17 P3) The illustration for component locator shows new connector locations. Keyboard Inverter power connector Motherboard connector connector Disk drive connector Figure 6 A17 CPU board connector locator, component side Agilent 35670A Supplement... -
Page 20: To Troubleshoot Power-Up Failures
Replace the first five rows of the table: Failing Power-up Message Probable Faulty Assembly or Next Test LEDs A17 CPU MC68030 Processor MC68882 Coprocessor Bootrom Display Main RAM A17 CPU ProgramROM A17 CPU Fast bus A17 CPU A17 CPU Agilent 35670A Supplement... -
Page 21: To Troubleshoot Cpu, Memory And Buses Failures
Step 1: Disregard references to Memory Assembly and incorporate the related information into A17 CPU. Step2: Illustration for component locator shows new connector locations Keyboard Inverter power connector Motherboard connector connector Disk drive connector Figure 7 A17 CPU board connector locator, component side Agilent 35670A Supplement... -
Page 22: To Troubleshoot Display Failures
• Using a logic probe check that the following TTL signals are toggling: Test Location Signal Name In/Out P14-31 VSYNCLCD A17 Out P14-33 HSYNCLCD A17 Out P14-24 CLK_LCD A17 Out • If the signals are incorrect the A17 board may be faulty. Agilent 35670A Supplement... - Page 23 Information on the screen is scrambled or mixed up Vertical or horizontal stripes appear across the screen Screen is blank Display, Power inverter, Display backlights, cables Screen is tilted, compressed, or distorted Display, A17 Line across the screen Agilent 35670A Supplement...
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Page 24: To Troubleshoot Iic Bus Failures
A power-on test has failed. Refer servicing to qualified personnel. Press Start key to attempt to continue Power-up. • If the SCL signal does not toggle after S5 is pressed, the A17 CPU assembly is probably faulty Agilent 35670A Supplement... - Page 25 Press Start key to attempt to continue Power-up. • If the SCL signal does not toggle after S5 is pressed or the failure message is not displayed, the A17 CPU assembly is probably faulty. Agilent 35670A Supplement...
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Page 26: To Troubleshoot Fast Bus Failures
B14, C14, B15, C15, B16 FA1 to FA5 Toggling ECLK Toggling FSELAn Toggling BRESETn Toggling FIFOENn High FSELSn Toggling New illustration showing location of motherboard connector pins. 2 34 Figure 11 A17 CPU motherboard (P10) connector pin locations Agilent 35670A Supplement... -
Page 27: To Troubleshoot Memory Or Battery Failures
• Check that the voltage at TP200 is 2.6Vdc to 3.1Vdc. • If the voltage is correct, the memory is probably faulty. • If the voltage is incorrect, replace the battery BT1. Battery TP200 Figure 12 Battery location Agilent 35670A Supplement... -
Page 28: Adjusting The Analyzer
To adjust the frequency reference Page in original guide 5-5 Disregard this section. The frequency reference is not adjustable. To adjust the display voltage Page in original guide 5-21,22 Disregard this section. The display voltage is not adjustable. Agilent 35670A Supplement... -
Page 29: Replacing Assemblies
Service Guide Replacing Assemblies What to do before replacing the CPU assembly Page in original guide 6-3 The EEPROM is now U111 on the A17 CPU assembly. U111 Figure 13 Location of U111 Agilent 35670A Supplement... -
Page 30: What To Do After Replacing An Assembly
Note that the frequency adjustment is no longer needed. Disregard the last two rows of the table referring to adjustments of the Display and the DC- DC Converter (now a Power Inverter). There are no adjustments for these items. Agilent 35670A Supplement... -
Page 31: To Remove Cpu
Service Guide To remove CPU Page in original guide 6-11 New illustration in step 3 showing an additional cable: Figure 14 Disconnect the cables from A17 Agilent 35670A Supplement... -
Page 32: To Remove Nvram
Disregard this section. The NVRAM is now on the CPU board. To remove memory Page in original guide 6-13 Disregard this section. The memory in now on the CPU board. To remove motherboard Page in original guide 6-17 Disregard step 5. Agilent 35670A Supplement... -
Page 33: Replaceable Parts
Power Inverter Bezel Assembly Figure 15 Assemblies Reference designator A17 replaces A7, A8 and A9. There is also a replacement motherboard, bezel assembly, display assembly and DC- DC converter assembly. Ref Des Agilent Part Number Description 35670-66517 CPU ASSEMBY 35670-66598 MOTHERBOARD... -
Page 34: Cables
EXTENDER CABLE FOR CCFL TUBES 3670-61624 DISPLAY CABLE Instrument Covers and Handles Page in original guide 7-7 Two parts have been replaced: Ref Des Agilent Part Number Description 35670-64101 SHTF ASSY-COVER ALV 5063-5523 MOLD BUMPER SET 4PC FF CORNRS Agilent 35670A Supplement... -
Page 35: Front Panel Parts
Service Guide Front Panel Parts Page in original guide 7-9 MP211 Figure 16 Front panel parts Three parts have been replaced and a new one added: Ref Des Agilent Part Number Description MP201 35670-22021 CSTG-FRT FRAME MACH&PAINTED MP210 35670-29321 LNZ-FLTR RFI/OPTICAL... -
Page 36: Rear Panel Parts
Service Guide Rear Panel Parts Page in original guide 7-10 One part has been replaced: Ref Des Agilent Part Number Description MP300 35670-00221 SHTF REAR PANEL W/SILKSCREEN Chassis Parts Page in original guide 7-11 Two parts have been replaced: Ref Des Agilent Part Number... -
Page 37: Circuit Descriptions
CPU assembly. The additional NVRAM option assembly is now standard and consolidated onto the CPU assembly. The DC- DC Converter has been replaced with a Power Inverter which generates the display backlight voltage. Figure 17 Two channel overall block diagram Agilent 35670A Supplement... - Page 38 Service Guide Figure 18 Four channel overall block diagram Agilent 35670A Supplement...
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Page 39: A7 Cpu
The Math Co- processor is 20 MHz rather than 40 MHz (error in previous documentation). The 40 MHz oscillator is now a precision clock oscillator and is no longer adjustable. Clock Circuits Provide the clocks for the CPU assembly and all other assemblies. New block diagrams: Agilent 35670A Supplement... - Page 40 Service Guide MUXADDR (11:0) Buffer Buffer Figure 19 A17 CPU Block Diagram Agilent 35670A Supplement...
- Page 41 Real Time Clock Video External Frame Buffer1 Display Frame Buffer2 VSYNC Buffer TTL Connector HSYNC Display Controller RGB Data Bus Video LVD Data HSYNC Serializer Gate VSYNC Array CCFL Inverter control Inverter backlights Figure 20 CPU Block Diagram: Interface Agilent 35670A Supplement...
- Page 42 IIC (Inter_IC) controller the bullet referring to A8 memory is replaced: • A17 CPU (Real time clock, EEPROM) Disk Controller Disregard the final sentence referring to reversed operation. Frame Memory Consists of four SRAM chips. Agilent 35670A Supplement...
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Page 43: A8 Memory
The NVRAM has been incorporated into the CPU board. Disregard this section. A102 DC-DC Converter Page in original guide 8-39 This is now a power inverter assembly which supplies the voltage for the LCD display backlights (CCFL). Agilent 35670A Supplement... -
Page 44: Voltages And Signals
Service Guide Voltages and Signals Voltages and Signals Page in original guide 9-2 The references in the table to A8 Memory and A9 NVRAM are deleted since the circuits are now consolidated onto the A17 CPU board. Agilent 35670A Supplement... -
Page 45: Assembly Locations And Connections
Service Guide Assembly Locations and Connections Page in original guide 9-3,4,5 Bezel Assembly Power Inverter Figure 22 Assembly locations Agilent 35670A Supplement... - Page 46 Service Guide and memory Power Backlights Inverter CCFL Figure 23 Assembly connections for two-channel analyzer Agilent 35670A Supplement...
- Page 47 Service Guide and memory Power Backlights Inverter CCFL Figure 24 Assembly connections for four-channel analyzer Agilent 35670A Supplement...
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Page 48: Power Supply Voltage Distribution
Serial Clock–This is the serial clock for the IIC bus. The IIC controller on the CPU assembly generates this clock to synchronize the transfer of data on the IIC bus. Serial Data–This is the IIC bus bidirectional data line. Everything else in the section should be disregarded. Agilent 35670A Supplement... -
Page 49: A9 Nvram
RAM even when the analyzer is off, the static RAM is non-volatile. Everything else in the section should be disregarded. A99 Motherboard Page in original guide 9-31,33 Disregard the sections on HSYNC, VDATA, and VSYNC Agilent 35670A Supplement... -
Page 50: A101 Display
Pixel Data 1: LVDS pair carrying green pixel bits 3 to 7, and blue pixels bits 2 to 3 Pixel Data 0: LVDS pair carrying red pixel bits 2 to 7, and green pixels bit 2. VCC: 3.3 Volts. Agilent 35670A Supplement... -
Page 51: A102 Dc-Dc Converter
The following table lists signals routed between the A17 board and the A102 Power Inverter. A description of each signal follows the table: 3,4,7,8 BLight_ON VCC: 5 Volts BLight_ON: Generated by U135 to turn on and off the display backlights for power saver mode. Agilent 35670A Supplement... - Page 52 Service Guide Agilent 35670A Supplement...