Sharp MZ-3500 - Manual (Page 90)

Mi
1) Memory test
Sub lOCS RAM (4000H-5FFF)
Shared RAM (2003H-23FFH)
Shared RAM (2440H-27FFH)
Above are tested.
[Display]
(1) Normal test ending
RA OK: SUB-IOCS RAM
RA OK
RA OK
Above information are displayed on three display
lines.
(2) Abnormal test ending
RA ER
Shared RAM
2) VRAM check
Proceed to test for ASCII and atribute VRAM
[Display]
During test période, display shows under following.
(1) Display reviced "U” for entire screen iroin top side.
(2) Display blinking "I"' with under! ne for entire screen.
(3) Display entire screen by space.
Test end
1. Normal
VR OK
2. Abnormal
VR ER
3) CRT inter face test
Performance of the CRT is tested. To move into each test
phase, push the HALT switch. Test No.l-No .8 test the
400-raster CRT, and test No.9-No.16 test the 200 rasters
CRT.
'Procedure and display]
(Test No.1)
Confirm all patterns on the display screen of 40 digits and
20 lines.
(Test No.2)
Confirm all patterns on the display screen of 80 digits and
25 lines.
40
(Test No.3)
( 1 ) Confirm that an entire screen is Filled with "H".
(2) Confirm that attributes are shown as illustrated.
Vertical line
Horizontal line
Highlight
Blink
- 97 -