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SX-200 General Information Guide
•
Test any peripheral circuit in the digital bays
•
Test any printer on the system, other than the system printer using the physical location
number of the printer port
•
Test any printer on the system (except the system printer) using the extension number of
the printer port
•
Test the system printer.
Maintenance Diagnostics
This section briefly describes the maintenance diagnostics for the system. These diagnostics
test the operation of the system hardware. The main control system controls and schedules
the diagnostics.
Upon power-up or reset conditions, the diagnostics software (if enabled) has temporary control
of the entire system. Once the system has been verified and is operational, the diagnostics run
as low priority background tasks.
Background diagnostics, a complete routine test that runs during system operation, runs once
a day at 4 a.m , if enabled.
Modular design and functional packaging of the equipment permits rapid location and
replacement of defective components. Circuit malfunctions are detected by diagnostic routines
automatically initiated by the Main Control Card. Diagnostic routines, detailed in the General
Maintenance Information section, and the Troubleshooting section, direct service personnel to
the defective circuit card or assembly, and identify the required field-replaceable unit. Diagnostic
routines and maintenance procedures do not interfere with users unaffected by the malfunction.
Maintenance Objectives
The objectives of the maintenance routines are to isolate a fault to a replaceable card or module.
Maintenance functions can be performed from either the attendant console or a RS-232 VT-100
maintenance terminal.
RS-232 Maintenance Terminal
The main control system interfaces to an RS-232 VT-100 maintenance terminal and to the
Attendant Console to enable the user to access the diagnostic menu. The diagnostic menu will
direct the user through the required procedures in order to interrogate the status of the
diagnostic subsystem. The user can initiate maintenance routines with specific parameters via
the terminal. Refer to the RS-232 Maintenance Terminal section. Results can be routed to the
appropriate device (printer or terminal) according to the user's instructions.
Diagnostic Log Files
A file of the major occurrences in the diagnostic system is maintained in NVRAM. This file can
be directed to the RS-232 maintenance terminal, the attendant console, or a printer.
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