Troubleshooting - Agilent Technologies 54835A Service Manual

5
Safety 5-2
Tools Required 5-2
ESD Precautions 5-2
Keystroke Conventions 5-2
Default Setup 5-3
To install the fan safety shield 5-3
To troubleshoot the instrument 5-4
Primary Trouble Isolation 5-6
No Display Trouble Isolation 5-9
Power Supply Trouble Isolation 5-13
To check probe power outputs 5-16
To check the keyboard 5-17
Test Procedure 5-17
Troubleshooting Procedure 5-18
To check the LEDs 5-19
To check the motherboard, CPU, and RAM 5-21
To check the SVGA display board video signals 5-22
To check the backlight inverter voltages 5-23
POST Code Listing (AMI Motherboard only) 5-24
To configure the motherboard jumpers and set up the BIOS 5-29
Motherboard / floppy drive configurations BIOS setup 5-29
Configuring the AMI Series 727 Motherboard Jumpers 5-32
To configure the AMI Series 727 WINBIOS Parameters 5-34
Configuring the AMI Series 757 Motherboard for 200 MHz CPU 5-37
To configure the AMI Series 757 WINBIOS Parameters with 1.44 Mbyte floppy drive 5-39
Configuring the AMI Series 757 Motherboard for 300 MHz CPU 5-42
To configure the AMI Series 757 WINBIOS Parameters with 120 Mbyte floppy drive 5-44
Configuring the FIC VA-503A motherboard switches for the 400 MHz CPU and 120 Mbyte
floppy drive 5-47
To Configure the FIC Series VA-503A Motherboard BIOS Parameters 5-48
To troubleshoot the acquisition system 5-49
Determining the Acquisition Contact Closure Count 5-49
Isolating Acquisition Problems 5-49
To troubleshoot attenuator failures 5-56
Attenuator Click Test 5-56
Swapping Attenuators 5-57
Attenuator Connectivity Test 5-57
Software Revisions 5-59

Troubleshooting