Diagnostic - Sharp PC7000A Service Manual

DIAGNOSTIC
1 GENERAL
(1) Introduction
This diagnostics disk serves for adjustment, aging, field
maintenance and repair of this personal computer. Although
the package employs an interactive entry system to prevent
the personal computer from malfunctions such as miss opera-
tion, be very careful in handling this diagnostics package.
The diagnostics package is supplied in the form of a floppy
disk which is labeled "DIAGNOSTICS FOR PC7000A/
7100", The disk incudes the following diagnostics programs
in accordance with devices. These diagnostics programs
programs are loaded by the DIAG LOADER program
described in item 2.
SHARP Ver.
DIAGNOSTICS FOR PC7000A/II
(LEVEL 3) 7100
I
I I
rf\
File name Device name
Standard PCMEMDIG
· .....
Memory
PCRTCDIG . . . . . . . Real Time Clock
PCPRTDIG
·
......
Printer
PCKEYDIG . . . . . . . Keyboard, Speaker
PCFDDDIG . . . . . . . Floppy Disk Drive (s)
PCSIODIG
· ......
Serial I nterface Adaptor
PCLCDDIG . . . . . . . Liquid Crystal Display
Option PCCRTDIG . . . . . . . Color CRT Adaptor
PCMONDIG
· .....
Monochrome CRT
Adaptor
PCMDMDIG
· .....
Modem Card
Expansion PCEXPDIG
· ......
Expansion Unit
PCDSKDIG . . . . . . . Hard Disk Drive (s)
(2) Notation in Manual
~
represents the content of display and a digit being
entered. A message is shown as
II " .
A key that the
operator presses is depicted as [[ 1]. For example, a
message is surrounded by a set of double-quotation marks
like
"Mr. Yamada is fine."
In case of key entry, the sentence 'Press the ESC key.' is
shown in the manual as 'Press [[ESC]] '.
(3) Key Entry
(3.1) Decimal Code Entry
[0]
to [91 can be entered by using the numeric keys [[0]]
to [[9]] and those of the typewriter keys.
When entering decimal 'codes through the numeric keys,
press [[Numeric Lock]] and check to see that the LED on
the [[Numeric Lock]] lights on.
- 1 -
(i) Numeric Keys
ro=;-
Num
Lock
7
8
Home
1
4 5
-
1 2
End
I
II
~ns
II
(ii) Typewriter Keys
9
PgUp
6
,...
3
PgUp
PC-70DDA
PC-710D
While a diagnostics program is executed, [[0]] to [[9]] of
the typewriter keys function as data keys irrespective of
[[Shift]]. For example, even if [[1]] is entered while the
shift key of the typewriter keys is pressed, numeric data
[1] is entered.
(3.2) Hexadecimal Code Entry
Codes from [0] to [9] can be entered in the same manner
as the decimal numbers; codes [A], [B], [C], [D], [E],
and [F.] should be entered by using [[A]] to [[F]] of the
typewriter keys.
Like the decimal code entry, while a diagnostics program is
executed, [[A]] to [[F]] of the typewriter keys function
as data keys irrespective of the state of [[Shift]]. For
example, even if [a] is entered while the shift key is
pressed, code [Al is entered.
(3.3) Terminate and Clear Entry Keys
(i)
Numeric Keys
[J
(i i ) Typewriter Keys
-
[[ +]] (Delete) . . . . . . . " Deletes all the data entered
through the data keys.
[[ - ]] (Minus) . . . . . . . . . This key functionsto details,
see the description of each
program.
[[.,I]] (Enter)
Completes data entry.