Epson DM-M820, Technical Reference Manual

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5-36 BIOS Functions Rev. I
TM print test
Select TM print test from the pull-down menu to conduct a print test of the TM printer.
When the test is successfully completed, "TM print test: done" message appears.
This test is performed regardless of the status of the modem signal.
The status of the modem signal is displayed in COM Ports.
DM display test
Select DM display test from the pull-down menu to conduct a DM display test.
When the test is successfully completed, "DM display test: done" message appears.
This test is performed regardless of the status of the modem signal.
The status of the modem signal is displayed in COM Ports.
This test is only performed for the DM-D connected to the serial port.
Drawer kick-out
Select Drawer kick-out from the pull-down menu to conduct an open test of the drawer.
Note:
Be sure to connect a drawer through a TM or DM.
This test cannot be performed when the TM Status is displayed as Disable or No connection. This test
cannot be performed on multiple drawers.
COM# loop-back
Select COM# loop-back from the pull-down menu to conduct a communications test using the
loop-back connector of the serial port. The test results are displayed in the following manner.
The status of the modem signal is displayed in COM Ports.
COM# port is disabled The designated port is disabled.
COM# loop-back
test:OK The test was completed successfully
COM# loop-back
test:Error An error occurred
1 DCD/power
2 RxD
3 TxD
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9 RI
COM ポート ループバック・コネクタ
COM port loop-back connector