Siemens FS720 Commissioning, Maintenance, Troubleshooting page 167

Node 1
Line1
A1
B1
Line2
A2
B2
A1 B1 A2 B2
H3 H2
H1
FN2001
Node 1
Line1
A1
B1
Line2
A2
B2
A1 B1 A2 B2
H2
H3
H1
FN2001
Building Technologies
Fire Safety
Fiber-optic network module FN2006 / FN2007 troubleshooting steps
3 Break in optical fibers
FN2006/FN2007
RX1
Link1
EF1
Fail1
Fail2
EF2
Link2 RX2
A Power B
VsysA
Figure 13: Break in optical fiber Rx1
FN2006/FN2007
RX1
Link1
EF1
Fail1
Fail2
EF2
Link2 RX2
A Power B
VsysA
Figure 14: Break in optical fiber Rx2
FN2006/FN2007
Link2
RX2
Line2
A2
EF2
B2
Fail2
Fail1
Line1
A1
EF1
B1
RX1 Link1
B Power A
VsysA
FN2006/FN2007
Link2
RX2
Line2
A2
EF2
B2
Fail2
Fail1
Line1
A1
EF1
B1
RX1 Link1
B Power A
VsysA
A6V10210416_j_en_--
Repair
24
Node 2
B1 A1 B2 A2
H3 H2
H1
FN2001
Node 2
B1 A1 B2 A2
H3 H2
H1
FN2001
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2018-08-29