Sony SDX-800V/R manual Overview, Diagnostic Test, Power-on Self Test

7.Drive Diagnostics

7. Drive Diagnostics

This clause deals with the diagnostics supported by the SDX-800V. Each diagnostic is described in detail and possible error codes are discussed.

7.1.Overview

The diagnostic firmware for this product is designed to achieve the following objectives:

-Isolate hardware failures

-Verify the media

-Provide predictive information which can lead to the early detection of potential problems

-Provide remote support capabilities

-Satisfy manufacturing testing needs

How these objectives are achieved:

-Fault isolation is achieved by providing an extensive set of diagnostic tests.

-Media verification is achieved by error rate testing and tape logs.

-Predictive data is provided in the form of a tape log and runtime error logs. Logs are maintained within the drive's RAM, EEPROM and on the AIT cassettes.

-Remote support capability is provided by allowing all tests and test sequences to be initiated via the host interface. Similarly, all test results are reported back to the host via the interface.

-Manufacturing needs are satisfied by providing unrestricted access to all internal tests.

7.2.Diagnostic Test

This clause describes the Diagnostic Test facilities of the drive. The method for executing tests and receiving test results from the Host is described and a full list of available tests and possible result messages is given.

Diagnostics can be initiated in several ways:

-Power-on Self Test

-Send Diagnostic command initiating a Self Test

-Send Diagnostic command initiating a specific test or sequence

Each type of Diagnostics will be described in detail.

7.2.1.Power-on Self Test

Each time power is applied to the drive it will automatically perform a series of diagnostics on itself to insure that the basic functions of the drive are performing properly. The power-on Self Test sequence is shown below:

Power supply voltage exceeds power-up threshold

61Main Processor ROM checksum

62Main Processor Destructive RAM Test

70SDX-800V Controller Register Test

The following 3 tests are initiated by the Mechanism Controller automatically after power-up and therefore would be executing in parallel with the tests listed above.

20Mechanism Controller Microprocessor Test

30Front Panel Check

79Data Compression Functions DMA Line Test

71Buffer RAM Test

If a failure occurs with any of the power-on diagnostic tests the drive will halt with the Status LED flashing.

SONY AIT-3Ex drive SDX-800V series Ver.1.1 7-1