Sony DVS-7200A Maintenance Manual page 95

7. Communication test
(1) Connect the three tool cables for testing the RS-422A communication system and the one tool cable
for testing the RS-232C communication system in the section 3-3-1 to the following D-SUB 9-pin
connectors.
(a) Tool cables for testing the RS-422A communication system
Between "SWITCHER" and "DME" connectors
Between "REMOTE 1" and "REMOTE 2" connectors
Between "REMOTE 3" and "REMOTE 4" connectors
(b) Tool cables for testing the RS-232C communication system
Between "TERMINAL 1" and "TERMINAL 2" connectors
Checking the IF-523 board
The IF-523 board needs for the items (b), (c), (f) and (g) in the step (9).
n
The tool cable for testing the RS-232C communication system is connected between "TERMINAL 1"
and "TERMINAL 2" connectors in this test. Therefore, the terminal with connector for the test cannot be
used. Perform this test in the following procedures.
(2) Open the panel. (Refer to the section 1-2-1.)
(3) Turn off the power switch in the control panel.
(4) Set the DIP switch (S4) on the CPU-246 board as shown below.
(5) Turn on the power switch in the control panel.
(6) Close the panel. (Refer to the section 1-2-1.)
DVS-7200AE MMP1
ON
Switch No.
1 2 3 4 5
: Switch position
6 7 8
3-3. Troubleshooting (BKDS-7015)
3-3-4. Test Procedures
3-27