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1) COM1 CHECK
1 Content
The loop back check is performed for the UART at I/O address
3F8H ~ 3FFH. The test procedures are as follows:
i.
UART setting is made. If access is denied to UART at that time,
"COM1 Disabled" is displayed and the following check is not
performed.
ii. RTS signal is turned on/off to check that CD, CTS signal is nor-
mally operating. In case of any abnormality, ERROR is dis-
played.
iii. DTR signal is turned on/off to check that DSR, RI signal is nor-
mally operating. In case of any error, ERROR is displayed.
When an error occurs in procedure i or ii, the following test is
not performed.
iv. Set the baud rate to 19200bps asynchronous. 256 byte data of
00H ~ FFH is transmitted from SD signal. Data received at RD
signal is compared to check that the both are the same. If the
output data is not returned for 5 sec or more, an ERROR is dis-
played and the test is terminated.
v. An interruption signal is issued from UART and the number of
generated interruption request signal is displayed.
2 Display
Serial I/O COM1 Check
RTS - CD
:
PASS !!(or ERROR !!)
RTS - CTS
:
PASS !!(or ERROR !!)
DTR - DSR
:
PASS !!(or ERROR !!)
DTR - RI
:
PASS !!(or ERROR !!)
TD - RD
:
PASS !!(or ERROR !!)
INTERRUPT
:
IRQ XX
The number of the interruption request signal is displayed at XX.
If no access is allowed to COM1 UART, the following display is
made.
Serial I/O COM1 Check
COM1 Channel Disabled
3 Terminating method.
Press the Esc key to terminate and return to the Serial I/O diagnos-
tics menu.
2) COM2 CHECK
1 Checking content
The loop back check is performed for the UART at I/O address
2F8H ~ 2FFH. The check procedure, the display, and the terminat-
ing method are the same as COM1 Check.
3) COM3 CHECK
1 Checking content
The loop back check is performed for the UART at I/O address
3E8H.
When the RJ-45 port of the UP-5900 main unit is assigned to
COM3, the following points are different from 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.
COM3 is checked as well as COM1 except at the above 2 points.
3-11. 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 pat-
tern 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
UP-5900VS DIAGNOSTICS SPECIFICATIONS
4 – 7
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