Agilent Technologies 45A, 46A, 54835A manual Troubleshooting

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