ELCOM Euro-2000T Alpha Service Manual page 75

6.5.5. PC serial interface interrupts test.
A PC serial interface interrupts test allows you to check the proper function of the input interrupt circuit which is used for RS-
232C and RS-485 serial interface. The test can be executed only with a loopback connector as in the following figure.
Loopback connector:
Test initiation:
1) Switch the cash register to ,,P“ mode.
2) Insert the loopback connector to PC connector.
3) Press 505 on numerical keyboard.
4) Press the key
Test description:
1) The CPU transmits the sequence of 5 correct and 5 incorrect interrupt pulses to PC connector.
2) The pulses are received by the input interrupt circuit thanks to the loopback connector.
3) A successful test result must be checked on the display, and the termination message must be printed.
Test results without loopback connector:
505
Test results with loopback connector:
505
If the test result is incorrect refer to chapter 7.6.
Note: The test is executable only on Euro2000T Alpha.
6.6. Cash drawer opening test.
This test allows you to check the proper function of drawer opening control circuit.
Test initiation:
1) Switch the cash register to ,,P“ mode.
2) Press 600 on numerical keyboard.
3) Press the key
Euro-2000T Alpha
Euro-1000T
Euro-2000T Alpha/1000T Service manual
D-SUB 9 MALE
5 4 3 2
9 8 7
Soldering side
( R )
K [TIME].
505
** TEST **
0 ERR
Correct test result
** TEST **
5 OK
Correct test result
( R )
K [TIME].
60 0
600
Short circuit
1
6
A
** TEST
505 5
Incorrect test result
** TEST
505 0
Incorrect test result
K
A
R Q
© Elcom s.r.o.
**
OK
**
ERR
Printout:
** TEST **
600
75