6.3 Operation Check

6.3Operation Check

6.3.1Initial seek operation check

If an error is detected during initialization by the initial seek operation check routine at power-on, the spindle motor of the disk drive stops, and then the disk drive becomes unusable.

For an explanation of the operation check before the initial seek, refer to the Section 5.4.

6.3.2Operation test

While the host computer is processing data, the HDD monitors disk drive operation including data processing, command processing, and seek operations. If the HDD detects an error, the HDD posts the error to the initiator. The initiator then posts the error to the user.

The user may detect an intermittent or nonfatal error such as abnormal noise, abnormal odor, or very slow operation.

An error posted in an operation test must be investigated. Replace the disk drive to see whether the error was caused by the disk drive.

Often, errors posted in an operation test may be caused by the host system. Possible causes include insufficient power capacity, loose cable connection, insufficient timing or insufficient mechanical play, and problems related to other systems.

If an operation error is detected by the error detection circuit of the disk drive, an interrupt occurs. The interrupt is posted to the MCU on the PCA. The MCU stops the currently processed command, and causes the CHECK CONDITION status to post the error to the initiator.

When receiving the CHECK CONDITION status, the initiator issues a REQUEST SENSE command to collect detailed information about the error. The initiator then issues a REZERO UNIT command to return the read/write head to track 00. In normal processing, the HDD itself or initiator determines how to handle the error (processing retry or stop).

To analyze the error posted in the operation test, reconstruct the conditions in which the error occurred. Then, start troubleshooting the whole host system by replacing the disk drive.

6.3.3Diagnostic test

The diagnostic test is executed to find a faulty subassembly in a faulty disk drive, or to check disk drive performance. This test is usually a combination of specific disk drive functions or group of functions. This test may be executed using a different host computers or test equipment and away from the environment where the error first occurred.

To analyze the error posted in the diagnostic test, reconstruct the conditions in which the error occurred. Then, look for a possibly faulty subassembly or part of the disk drive.

The procedures to be used in this test depend largely on the type of test equipment used, and are not covered by this manual.

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Fujitsu MAX3147FC, MAX3073FC, MAX3036FC Operation Check Initial seek operation check, Operation test, Diagnostic test
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MAX3147FC, MAX3036FC, MAX3073FC specifications

The Fujitsu MAX3036FC, MAX3073FC, and MAX3147FC are advanced integrated circuits that cater to a variety of high-performance applications, predominantly in the realm of communications and data transmission. Each model comes laden with unique features that help in addressing specific requirements in modern electronic systems.

The MAX3036FC, for instance, stands out due to its robust signal processing capabilities. It is particularly optimized for high-speed data communications, making it an excellent choice for applications that demand minimal latency and high data integrity. This featured IC operates within a wide voltage range, ensuring versatility in different circuit environments. It also adopts technology enabling low power consumption, an essential attribute in battery-operated devices.

In contrast, the MAX3073FC brings a distinct set of features suitable for more specialized applications. Its architecture supports a comprehensive serial data communication framework, making it ideal for designs that utilize various communication protocols, including those in industrial automation and automotive systems. The MAX3073FC supports advanced error correction mechanisms which enhance reliability, ensuring more accurate data transmission even over longer distances.

The MAX3147FC, on the other hand, focuses on integrating advanced timing and synchronization technologies. This model is particularly significant in applications that require precise timing signals, such as in telecommunications infrastructure and high-frequency trading systems. The MAX3147FC features integrated oscillators and buffers, streamlining the design process and reducing component count. Additionally, it boasts immunity to electromagnetic interference, a critical factor in maintaining signal integrity in noisy environments.

Common to all three models is Fujitsu's commitment to use cutting-edge manufacturing processes. This ensures the devices are compact, enhancing their suitability for modern designs where space is constrained. The ICs are also designed to handle varying temperature ranges, making them resilient for use in diverse environments.

Each IC is supported by comprehensive documentation and development tools that aid engineers in the rapid prototyping and deployment of their designs. The integration of these advanced features and technologies not only simplifies the design process but also accelerates time-to-market for new products. Whether addressing the demands of communication systems, industrial controls, or consumer electronics, the MAX3036FC, MAX3073FC, and MAX3147FC from Fujitsu represent exceptional flexibility and performance in the landscape of integrated circuit technology.
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