Troubleshooting guide

Section 1, System Description - System Components
61186003L1-1D 1-7
System Modules
System Controller Unit
• P/N 1186003L1 for –48 VDC (revision T and earlier)
• P/N 1186003L1 for –48 VDC or ±24 VDC (revision U and later)
• P/N 1186003L2 for –48 VDC or ±24 VDC
• P/N 1186003L5 for –48 VDC
• P/N 1186003E1 for –48 VDC or ±24 VDC
NOTE
To determine the revision indicator, locate the sticker with the 8 or
15-character serial number and UPC label. The revision indicator
is the leftmost character on that label. The revision indicator is
separated from the serial number by a series of blank spaces.
The System Controller Unit (SCU) provides the user interface and the network management
interface for the MX2820 system. The user can provision and monitor the MUX modules either
locally or remotely via the SCU. Figure 1-3 shows the MX2820 SCU front panel.
Figure 1-3. MX2820 SCU Front Panel
C
R
A
F
T
1186003
SCU
ACO
ALM
ACT