Digital Equipment RW504-ZA, Руководство по обслуживанию

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4.10.2 Electronic Core Tests
Table 4–6 Electronic Core Tests
No. Test Name Description
30 Microprocessor
Operation Test Does a functional check of the microprocessor. This test
must shut down the servo system; a Initialize Mechanism
Test is run when this test finishes.
31 ROM Checksum
Test Does a checksum verification of the ROM.
32 RAM Checksum
Test A checksum of the ‘‘Controlled’’ area of RAM is kept on a
continuous basis. This test verifies that the checksum is
still valid.
33 Non-Destructive
RAM Test Tests all the controller’s RAM, checking for data
acceptance and retention. The test is non-destructive
to RAM unless interrupted by power failure. To run
correctly, this test must shut down the servo system; as
a result, a Initialize Mechanism Test runs when this test
finishes.
34 SCSI Interface
Controller Chip
Test Checks out operations of the SCSI interface controller
chip. This test will not be run if initiated via SCSI, it
reports PASS.
35 Multi-Function
Peripheral Chip
Test Tests the functionality of the Multi-Function Peripheral
chip. It verifies the timer by comparing it to he CPU clock
and tests RS-232 capabilities with an on-chip loopback.
36 Motor Control Chip
Test Exercises the registers of the motor control IC. To run
correctly, this test shuts down the servo system.
37 Drive Connect Test Checks for expected drive configuration. This is done by
polling the drive connect signal on each of the possible
drives. This line is grounded at the drive end if a drive is
connected. If the drives physically connected do not match
the expected configuration, then an error is reported.
38 Control Panel Light
Show Lights each portion of the display individually and then
together. No feedback; always passes.
39 Control Panel
Button Check Displays the name of the button pressed. Press
CANCEL
twice to exit.
40 Power Supply Test Looks at both the 12-Volt and the 24-Volt pow that they
are within limits. The limits for the 12V supply are 11V
and 13V and the 24V supply limits are 23.5V and 25.5V.
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4–38 Troubleshooting and Diagnostics