No Display Troubleshooting

"No Display"

Start

Turn on the supply and try to program it from the front panel. While measuring the voltage at the output terminals, program the voltage and current to full scale. Toggle the ON/OFF key while observing the external voltmeter.

No display but output

 

No

 

OK

 

 

?

 

 

Yes

Turn off supply, remove front panel assembly to access circuits on the A3 front panel board. Turn on the supply.

Check 5V bias at R1-6, display voltages: 1.1V at R1-14, 2.2V at R1-2 and 3.3V at R1-16 (meter common at R1-3). See Fig. 6-4.

Check the A2 GPIB board, bias circuits, PCLR (test points 1 - 4 Table 6-3) and cable W9

 

 

 

 

Check A3C1,

Display and bias

 

No

 

 

 

A3R1 and A3RT1.

voltages OK

 

 

 

 

 

 

 

 

 

 

?

 

 

 

 

 

 

 

 

Yes

 

 

Check 10MHz Clock signal at

 

 

A3J2-9. See Fig. 6-9.

 

 

 

 

Yes

 

 

Check A3Y1,

Display and bias

No

A3C3, A3C4 and

voltages OK

 

A3U3.

?

 

 

Program voltage and current fron the front panel. Measure the voltage at the output terminals. In case the output is disabled press the output ON/OFF key while observing the output with an external voltmeter.

A3U3, A3U4 or A3U8

 

 

 

 

 

 

 

 

 

defective. Perform

 

 

 

 

 

 

 

 

 

 

 

No

 

 

Output Voltage present

front panel SA. See

 

 

 

 

 

 

 

 

?

 

 

 

 

 

 

Table 3-4.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Yes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LCD or cable W19 defective.

 

 

 

 

 

 

 

 

 

 

Figure 3-5. No Display Troubleshooting

14

Service Addendum

Page 14
Image 14
Agilent Technologies E4351B, E4350B service manual No Display Troubleshooting

E4351B, E4350B specifications

Agilent Technologies, a leader in electronic measurement, offers a range of advanced solutions, including the E4350B and E4351B switching systems. These models are specifically designed to meet the increasing demands of modern testing environments, providing high reliability and precision for a variety of applications.

The Agilent E4350B is known for its low resistance switching capabilities, making it an ideal choice for applications requiring accurate and repeatable measurements. It supports up to 16 channels of low resistance testing, allowing engineers to simulate complex electrical paths and identify potential issues in circuit designs. With an optional temperature measurement capability, users can monitor the thermal performance of components directly during tests.

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Both models employ advanced contact technology, which minimizes the potential for signal degradation, ensuring that users receive reliable data with minimal noise interference. This feature is crucial in applications where signal integrity is paramount, such as in research and development or quality assurance processes.

Enhanced user interfaces simplify operations for both novice and experienced technicians. The built-in touchscreen and intuitive navigation allow for easy setup and operation, significantly reducing the learning curve. Furthermore, the comprehensive software support provided by Agilent facilitates integration with various programming environments, allowing for custom test sequences tailored to specific needs.

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In summary, Agilent Technologies’ E4350B and E4351B models are distinguished by their precision, flexibility, and robust performance. Their advanced features and user-friendly design make them suitable for a wide variety of applications, from routine testing to complex R&D projects. By leveraging modern switching technologies, these systems set a high standard for electronic measurement, aiding engineers in developing reliable electronic solutions.