NCR PC4I, Руководство пользователя

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MAINTENANCE AND TROUBLESHOOTING
diagnostics program, or you can make a specific selection to run the
test of your choice (see Figure 4-5). You can use the FI key to ask for an
Explanation of Tests screen to explain the meaning of the choices (see
Figure 4-6). To exit from the Diagnostics program, press the F10 key.
This takes you out of the Diagnostics program.
Let’s take it from the top and run every test one time. When you select
a test and press ENTER, the test runs once and stops. If you select a
test and press the F8 key, the test will repeat automatically
(Continuous Mode) until you stop it by pressing the F4 key.
Henory - T e s ts f o r RAM p a t t e r n , RAM a d d re s s , RAH p a r i t y and ROM checksum.
C o n t r o l le r s - T e sts f o r a CPU, DMA, in t e r v a l t i a e r , i n t e r r u p t , CRT,
and s e r i a l t e s t .
Keyboard - T e s ts th e keybo ard p o r t , each keybo ard key and i t s a s s o c ia te d code .
F l e x ib l e d is k d r iv e - T e s ts f o r read o n ly and r e a d / e r it a o p e ra tio n o f each
f l e x i b l e d is k d r i v e , and in c lu d e s check f o r d is k speed.
F ix e d d is k d r iv e - T e s ts f o r a r e a d / e r it e o f th e a a in te n a n c e t r a c k , a read
o n ly o f s e c t o r 0 , a read o n ly and a r e a d / e r it e o f th e e n t ir e d is k .
M onochroea d is p la y - T e sts th e CRT RAM, c u r s o r a d d re s s in g , th e ASCII
c h a r a c te r s e t , th e s c r o l l r e g is t e r and v a r io u s m o n ito r a t t r i b u t e s .
C o L o r/G ra p h ic s d is p la y - T e s ts th e CRT RAM, c u r s o r a d d re s s in g , th e ASCII
c h a r a c te r s e t , th e s c r o l l r e g is t e r end v a r io u s a o n it o r a t t r i b u t e s .
P e r ip h e r a ls - T e s ts th e p a r a l l e l and s e r i a l p o r t s and an o p t io n a l p r i n t e r .
<F3> R e tu rn to p r e v io u s manu
Figure 4-6 Sample Main Menu Help Screen
Memory Test
When you choose the Memory Test, selection 1 on the Main Menu
screen, the System Memory screen is displayed (see Figure 4-7). The
program tests the memory for the various characteristics and
displays a message as each one passes the test. If any of the
characteristics of the memory fails the test, one or more of the
messages shown in Figure 4-8 will be displayed.
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