EST EST3X - Page 184

Chapter 7: Service and troubleshooting
174 EST3X Technical Reference Manual
Figure 44: SFS1-CPU LEDs
DS10
DS9
DS1
2
DS1
1
Table 40: SFS1-CPU LED descriptions
LED
Normal state Descriptions
DS9
Flashing Network data RX Class B activity
DS10
Flashing Network data TX Class B activity
DS11
Flashing Network data RX Class A activity
DS12
Flashing Network data TX Class A activity
Network data and digital audio risers
LEDs DS9, DS10, DS11, and DS12 in Figure 44 show the location and normal
state of the network communication status LEDs on the SFS1-CPU.
Network wiring alternates between channel A and channel B, as shown below.
A B
CPU
(1)
(2)
A B
CPU
A B
CPU
A B
CPU
A B
CPU
A B
CPU
(1) Class B network wiring one-line diagram
(2) Class A network wiring one-line diagram