HP 9915 Modular Computer PDF Installation Manual
Interface Card Log-In Test
If test 12 is run and passes, it can be interpreted as all other test results, indicating that the I/O hardware is functioning properly. The absence of the test 12 report on the CRT must be interpreted differently than the absence of any other test which you can expect to be performed on your computer, according to Table 3-1. If any other expected test or its result is not displayed on the CRT, it is an implicit indication that the test has failed. However, when test 12 results are not reported, it only means that computer hardware was unable to differentiate an empty I/O address from an occupied address. The test is automatically skipped because the results would be indeterminate.
A failure of test 12, as with other tests, definitely indicates a hardware failure. The user lights show the select code at which any failure has occurred. The following drawing shows the light definitions during this test-result display; failures have occurred at select codes 4 and 6, not at select code 10
User-Interactive Tests
Most of the individual hardware tests within SELF TEST require no user action. This section discusses the action that the user may take to evoke or evaluate certain tests, and describes any corrective action that the user can take upon a test failure. The tests in this category are as follows:
Tests 15 through 17 are tape tests; in order to run the tests the computer must be equipped with a tape transport (Option 001) and must have a tape in the transport at certain points of the test sequence. See Chapter 4 for further instructions. Tests 20 and 21 allow the user to check the operation of the beeper and special function keys. The user determines the success or failure of these two tests.
Tape Tests
The tape transport tests and user actions are explained in Chapter 4.
Beeper Test
This test (test 20) is only performed if the 9915 is equipped with Option 002. Without an external speaker, the test results cannot be concluded by the operator. The speaker sounds two frequencies during the test (1.2 kHz followed by a higher tone). If the operator fails to hear both beeps, the rear-panel, 25-pin connector must be checked. If inspection shows the connection to be good and the test still fails, please notify your service representative.
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January 23, 2010 | Posted in Electronic Manual, Hewlett-Packard Manual, Printer
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