6. TROUBLESHOOTING page 17

6.1.3. Battery Charger:

The Battery Charger is wired directly into Molex connector to the AM-255 board. To disconnect, the Molex pins must be removed from the housing by inserting a small screwdriver or sharp pointed object into the slots in the housing and pressing down, while pulling gently on the wire. The ac input plugs into the charger with a standard IEC connector. To reinstall the battery charger insert the pins into the Molex housing, and reconnect the ac input to the IEC connector.

6.1.4. Lamps:

The Lamps are soldered to the circuit board.

6.2. TROUBLESHOOTING GUIDE

NOTE:

Some steps will require tools, supplies, DMM, and possibly an oscilloscope. These steps should only be performed by qualified service personnel.

Perform a physical inspection of the unit, looking for faulty or broken wiring, foreign material, broken or damaged components, and loose connections. Proceed by checking the individual assemblies as follows:

6.2.1. Battery and Charger:

If the unit is not operating at all and the green power LED is off, use the following steps to check the battery and charger. Refer to Drawing 3. "Controller Board" (Appendix F.)

Open the front panel and disconnect the positive lead to the battery. Measure the voltage across the battery with a meter; it should be at least 12.4 volts. If the voltage is low or not present then the battery must be charged or replaced.

NOTE:

Do not go to step 2 until the battery voltage is 12.4 or greater.

Model AM-255

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Sigma AM-255 service manual Do not go to until the battery voltage is 12.4 or greater
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AM-255 specifications

The Sigma AM-255 is a cutting-edge, versatile piece of equipment designed to meet the demands of professionals across various industries. Known for its robust engineering and innovative technologies, the AM-255 stands out as a reliable solution for tasks requiring precision and efficiency.

One of the primary features of the Sigma AM-255 is its advanced processing capabilities. Equipped with a high-performance processor, the AM-255 is capable of handling complex calculations and data processing tasks with ease. This results in faster operation speeds, reducing downtime and allowing users to focus on their workload without the frustration of lagging performance.

The AM-255 also integrates state-of-the-art connectivity options. With multiple ports for USB, HDMI, and Ethernet, users can easily connect the device to various peripherals and networks. This flexibility is crucial for professionals who rely on external devices and need to transfer data seamlessly.

In terms of user interface, the AM-255 boasts an intuitive touch screen display that responds quickly and accurately to input. The interface is designed to simplify navigation, making it accessible even for those who may not be tech-savvy. This attention to user experience not only enhances productivity but also encourages proactive engagement with the system.

Another notable characteristic of the Sigma AM-255 is its durability. The device is engineered with high-quality materials that withstand harsh working conditions, making it ideal for fieldwork or industrial environments. Its rugged construction ensures longevity, minimizing maintenance costs and providing peace of mind for users.

Furthermore, the AM-255 features energy-efficient technologies, contributing to a lower carbon footprint. This aligns with global trends towards sustainability, allowing organizations to adopt more eco-friendly practices without sacrificing performance.

Security is also a top priority in the design of the Sigma AM-255. With advanced encryption protocols and secure user authentication features, the device protects sensitive data and prevents unauthorized access, which is crucial for businesses handling confidential information.

In summary, the Sigma AM-255 is a remarkable solution that combines performance, connectivity, user-friendliness, durability, energy efficiency, and security. These main features make it a valuable asset for professionals seeking to enhance their operational efficiency and productivity in today’s fast-paced, technology-driven environment. As new technologies continue to evolve, the Sigma AM-255 is well-positioned to adapt and meet future industry challenges.
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