Com4 Check; Com5 Check; Com6 Check; Liquid Crystal Display Diagnostics - Sharp UP-5300 Service Manual

4) COM4 Check

1
Checking content
The loop back check is performed for the UART at I/O address
2E8H ∼ 2EFH. The check procedure, the display, and the ter-
minating method are the same as COM3 Check.

5) COM5 Check

1
Checking content
The loop back check is performed for the UART at I/O address
(PSC2 base address) + (410H ∼ 417H). The following points are
different from the COM1 Check:
1
Content
•
RTS-CTS is not checked.
•
DTR-RI is not checked.
2
Display
•
RTS-CTS is not displayed.
•
DTR-RI is not displayed.
COM5 is checked as well as COM1 except the above 2 points.

6) COM6 Check

1
Checking content
The loop back check is performed for the UART at I/O address
(PSC2 base address) + (418H ∼ 41FH). The checking procedure,
the display, and the terminating method are the same as COM5
Check.

3-10. Liquid Crystal Display Diagnostics

LCD test is performed.
The following patterns are displayed in sequence. Pressing the space
bar proceeds to the next display. Pressing the space bar at the final
pattern or pressing the Esc key during the test, will return the display
to the service diagnostics menu.

1) Liquid Crystal Display Check

1
Checking content
The test patterns are displayed in the following test procedures.
Pressing the space bar moves to the next pattern.
i. Black-and-white pattern in 1 dot interval
ii. Reversed pattern of pattern i.
iii. Vertical stripe pattern in 1 dot interval
iv. Reversed pattern of pattern iii.
v. Horizontal stripe pattern in 1 dot interval
vi. Reversed pattern of pattern v.
vii. "H" pattern (80 digits × 35 lines) In the 35th line, only 78 digits
of "H" are displayed.
(The actual display range is 25 lines. Scroll for 10 lines to
check.)
HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
viii. Gradation pattern from black to white in 16 gradations
ix. All white pattern
x. Color bar (16 colors)
Color bars of 16 colors are displayed.
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