Metrohm 799 GPT Titrino - Manual (Page 204)

4.2. Diagnosis
799 GPT Titrino 200
• Remove test plug.
• Press <CLEAR>.
diagnose press key 0...9
7.2 Test of the remote box
The remote box needs to be connected before the Titrino is switched on. Insert 3.496.8550 test plug in the remote
box.
• Press <2>.
reset remote box?
• Press <ENTER>.
Test sequence:
1. In case of an error an error message is displayed (for example
error 490 01HEX).
2. If no error is found, after about 1 s display shows
remote box test o.k.
• Press <CLEAR>. The dialogue switches automatically to the "extern i/o test".
extern input/output test
• If this test should not be carried out (see 7.1), quit block 4 pressing <CLEAR> twi-
ce.
• Remove test plug.
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 re-
quired, continue with point 9.
1 2 3 4 5 6 7 8 9
Fig. 5 Connections in the 3.496.8560 plug
• Press <5>.
RS232 test 1...2