420 Series 3-1
3.1 The Diagnostic Test
This chapter explains how to use the Diagnostic Test program to test the functions of the
computer’s hardware modules. The Diagnostics Program is stored on the Diagnostic Disk
and consists of nine programs that are grouped into the Service Program Module (DIAG-
NOSTICS Menu).
NOTES: To start the diagnostics, follow these steps:
1. Check all cables for loose connections.
2. Exit any application you may be using and close Windows.
The DIAGNOSTICS MENU consists of the following functions.
❑ DIAGNOSTIC TEST
❑ HARD DISK FORMAT
❑ HEAD CLEANING
❑ LOG UTILITIES
❑ RUNNING TEST
❑ FDD UTILITIES
❑ SYSTEM CONFIGURATION
❑ EXIT TO MS-DOS
❑ SETUP
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