Chapter 7: Service and troubleshooting 
P/N 3101890-EN • REV 006 • ISS 21JUN18  165 
Figure 56: RS-232 terminal block connections to the DB-9 programming cable 
 
(1)  VM-CPU terminal connector block 
(2)  Rear view of female DB-9 connector 
(3)  To the RS-232 jack of computer