Color Crt Adapter Diagnostic - Sharp PC7000A Service Manual

• Confirm whether to execute the test Or not.
• When entering the system execute the test.
(2.4.3) Abortion and Completion of Test
Although [[ESCll and [[F211 are available while the test
is conducted, a time lag occurs because these key
opera~
tions are processed in the state where the executing pro-
gram step is completed.
By pressing [[ESCll. control exits to the PRT test menu
(Figure PRT-l).
By pressing [[F211, the system displays the following
message on the lower left screen and aborts the test.
"Test stopped by user."
At the time, by pressing [[Ftll, the system continues the
test; by pressing [[ESCll, control exits to the PRT test
menu (Figure PRT·l) is returned.
When the test is completed:
"Test end"
is displayed. In this status, if [[ESCll or [["11 is press·
ed, the PRT test menu (Fig. PRT·l) is returned.
(2.4.4) Error processing
When an error occurs during test execution, an error
message and the current printer status are displayed in
hexadecimal digits at the left bottom of the screen, and the
test is interrupted. For example, when an error occurs in
internal memory of the printer during printing, the
follow~
ing display appears:
Printer status error. [DxD81
Error messages are discussed collectively later.
(3)
Error messages
All errors are represented by the statuses.
A status consists of 8 bit, and corresponds to the display
contents of 2-' "Sense printer status" as given below.
Bit 7 (Dx8D): Bsy
6 (Ox4D): Ack
5 (Ox2D): Pe
4 (Ox 10): Sel
3 (DxD8): 10e
2
(0
x 04):
1 (0 x 02):
o
(OxD1): Toe
For the meanings of each status, see 2-' Sense printer
status.
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P C-7000A
PC-7100
10 COLOR CRT ADAPTER DIAGNOSTIC
(1) Outline
A COLOR CRT ADAPTER DIAGNOSTIC program serves
to test the function of the Color CRT display (referred to
as CRT in the following discussion) of this computer.
(1.1) Color CRT mode selection
When this program is specified, the title is displayed, and
specifying color CRT mode is required.
Please select the color mode.
[0:8 colors, 1 : 16 colorsl
=
Ii!
If input error occurs, correct color display does not appear.
This specification is required only when a program is start-
ed.
(1.2) Test Menu Display
After specifying color CRT mode, the system displays the
title and the CRT test menu as shown in Figure CRT·l.
This display is referred to as the CRT test menu.
SHARP Personal Computer System Diagnostics Level.3
Date
actiO
1
1'86
Color CRT Adapter [1.11
(0) CRT size test
(1) CRT focus check
(2) CRT Color bar test
Fig. CRT-I CRT test menu
(1.3) Selection of Test Menu
Please input command?
~
Enter the required test number on the test menu as follows:
[[011 to [[211 (1 digit)
+
[["11 (When specifying [[Dll.
it is possible to press [["ll only.)
The number being entered is displayed on the screen. When
pressing (["ll, the specified diagnostics program is start·
ed up.
To change the test number, delete.the number being enter~
ed by using [[ .11 and then enter the correct number.
(1.4) Exiting Test Menu
By pressing [[ESCll followed by [[ " l l ; control exits to
the DIAG LOADER.