Maintenance

Troubleshooting Procedures

The troubleshooting procedures are designed to isolate problems to a module level. No component-level procedures are provided.

Equipment List The following test equipment is recommended for troubleshooting procedures:

HDigital Voltmeter (Tektronix DMM 16 digital voltmeter)

HOscilloscope, 20 MHz BW, with 10x Probe with < 1-inch ground lead, (Tektronix TDS500B series oscilloscope)

Diagnostic Information The IntelliFrame Mainframe does include diagnostics. Refer to the TEST Subsystem command descriptions on page 3±19 for more information. The functionality of the mainframe can be verified by following the performance verification procedures as described in Performance Verification beginning on page 5±1.

Fuses The mainframe has one line fuse. The line fuse can be one of three different kinds depending on the operating voltage of the mainframe. Table 8±2 summarizes the different fuses that can be used as the line fuse in the mainframe.

Table 8±2: Fuses

 

 

 

Tektronix replacement

Voltage

Rating

part number

 

 

 

 

103 V to 250 V operation

15

A, Fast Blow, 250 V

159-0256-00

 

 

 

 

90 V to 132 V operation

20

A, Slow Blow, 250 V

159-0379-00

 

 

 

207 V to 250 V operation

6.3 A, Fast Blow, 250 V

159-0381-00

 

 

 

 

Fault Isolation The main focus of the troubleshooting procedures is to isolate problems to one of the major modules within the mainframe. You may find it helpful to refer to the functional block diagram in Figure 6±1 on page 6±2 to isolate problems to one of the modules within the mainframe:

Power Supply Problems. Use the following information to isolate power supply problems to the power supply or to other modules.

HIsolate the problem to either the mainframe or to one of the installed VXIbus Modules. Remove the modules from the mainframe and check that the problem still exists.

HRun the mainframe diagnostic tests.

VX1410A & VX1420A IntelliFrame Mainframe Instruction Manual

8±21