Metrohm 785 DMP Titrino - Manual (Page 147)

4.2. Diagnosis
785 DMP Titrino
144
7 External inputs and outputs
This test is meaningful only if the 785 GDP Titrino is used interconnected with other instruments via the 'Re-
mote' connection. In addition, a 3.496.8550 test plug normally used in the repair service is required for this test.
However, this plug can also be purchased by customers under the above number.
For the sake of completeness, the procedure is described here. If a diagnostic test of the external inputs and
outputs is not required, continue with point 8.
5 18 4 17 3 16 1 2 6 7 8 13 19 20 12 24 11 23 10 22 9 21
Fig. 4 Connections in the 3.496.8550 test plug
• Press <4>
extern input/output test
• Press .
I/O-test-connector?
• Insert the 3.496.8550 test plug in port B 'Remote'. (Do not switch off instrument!).
• Press .
Test sequence:
1. In case of an error an error message is displayed. If for example no test plug is
connected, error message error 50 01HEX appears).
2. If no error is found, after about 1 s display shows
extern input/output o.k.
• Remove test plug.
• Press .
diagnose press key 0...9
8 RS 232 test
A 3.496.8560 test plug normally used in the repair service is required for this test. However, this plug can also
be purchased by customers under the above number.
For the sake of completeness, the procedure is described here. If a diagnostic test of the RS 232 interface is not
required, continue with point 9.
1 2 3 4 5 6 7 8 9
Fig. 5 Connections in the 3.496.8560 plug