Chapter 7
Troubleshooting and Maintenance
7–10
Use the Printer Port test to verify the operation of the printer port
The test requires a loopback connector. You can construct a simple loopback
connector as follows:
9-Pin Male
1
Not Used
2
Receive Data (RD)
3
Transmit Data (TD)
4
Not Used
5
Signal Ground
6
Not Used
7
Not Used
8
Not Used
9
Shield
Pin# Signal Name
Connects pins 2
!
3
Loopback Connector
RS-232 Port
To test the printer port:
1. Use the [NEXT] or [PREV] keys to display Printer Port on the
test selection screen.
DTAM Plus Diagnostic
NEXT to Select Test
ENTER To Initiate
Printer Port
2. Press [
] to initiate the test.
The DTAM Plus will continuously send out and receive a message at the
same port. The message is DTAM Plus self looping serial test
ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789.
DTAM Plus self loop
ing serial test ABCD
3. Press any key to terminate the test.
The next test selection screen is displayed.
DTAM Plus Diagnostic
NEXT to Select Test
ENTER To Initiate
Display Control
4. To terminate the test function , press the [NEXT] or [PREV] keys to
display Reset DUT in the test selection area. Press [
] to reset the
DTAM Plus.
Printer Port Test
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