Specifications
Table Of Contents
- General Information
- Preparing for Use
- To inspect package contents
- To connect power
- To connect the mouse, keyboard, LAN, printer, and GPIB cable
- To connect the standard 10073C probes
- To connect optional InfiniiMax oscilloscope probes
- To connect the digital probe
- Digital probe lead set
- To tilt the oscilloscope upward for easier viewing
- To turn on the oscilloscope
- To turn off the oscilloscope
- To verify basic oscilloscope operation
- Installing application programs on Infiniium
- Changing Windows System Settings
- To clean the oscilloscope
- Testing Performance
- Calibrating and Adjusting
- Troubleshooting
- To install the fan safety shield
- To troubleshoot the oscilloscope
- Primary Trouble Isolation
- No Display Trouble Isolation
- To check the backlight inverter voltages
- To check the display board video signals
- Power Supply Trouble Isolation
- To check probe power outputs
- To Check the keyboard
- To check the LEDs
- To check the motherboard, CPU, and RAM
- To setup the BIOS
- To troubleshoot the acquisition system
- Software Revisions
- Replacing Assemblies
- To return the oscilloscope to Agilent Technologies for service
- To remove and replace the top cover
- To remove and replace the bottom sleeve
- To disconnect and connect Mylar flex cables
- To remove and replace the CD-ROM drive
- To remove and replace the AutoProbe assembly
- To remove and replace the internal digital input cable (MSO models only)
- To remove and replace the backlight inverter board
- To remove and replace the front panel assembly
- To remove and replace the keyboard, touch screen, and flat-panel display assemblies
- To remove and replace the acquisition board assembly
- To remove and replace the PCI bridge board
- To remove and replace the display board
- To remove and replace the hard disk drive
- To remove and replace the motherboard
- To replace the Intel motherboard with the ADLINK motherboard
- To remove and replace the power supply
- To remove and replace the fan controller board
- To remove and replace a fan
- To remove and replace the probe power and control assembly
- Replaceable Parts
- Theory of Operation
- Index
Chapter 5: Troubleshooting
To check the LEDs
87
To check the LEDs
If you see a failure with the Auto or Trig'd LEDs, check the voltage at pin 6 of W12, with W12
disconnected from the keyboard. The voltage should be as follows:
•0 V ±0.5 V when both LEDs are supposed to be off.
• 2.5 V ±0.5 V when Trig'd is supposed to be on and Auto is supposed to be off.
• 5.0 V ±0.5 V when both LEDs are supposed to be on.
If the voltages are not correct, the problem may be with keyboard cable W12, oscilloscope
interface board A21, acquisition cable W3, or acquisition board A1. Try troubleshooting the
acquisition system first to verify correct behavior before replacing any assemblies. If the voltages
are correct but the LEDs do not light correctly, replace the keyboard assembly.
If you find a problem with the Armed LED, check pin 5 of W12 with the cable disconnected from
the keyboard. The voltage should be as follows:
• 5.0 V ±0.5 V when Armed is supposed to be on.
• < 3.6 V ±0.5 V when Armed is supposed to be on.
Isolation is the same as for the Trig'd and Auto LEDs.
If you find any other failures, replace the keyboard assembly. If the front panel power indicator
LED does not light, replace the cursor keyboard assembly.