Product Info

DMI (Digital Module Internal) Assembly Chapter 8: DMI R eplacement Procedures
• RS232 -1 and RS232 -2 - Debug RS -232 ports allow MMI access to the DMI controller
board via a computer terminal through either a modem or a null modem cable. These MMI
ports are 8 -pin RJ -45 connectors.
• LMT and TEST - These ports are intended for development use only . These debug ports
are configured for full -duplex fast Ethernet 10/100BaseT and allows local MMI access
to the DMI controller board via a Local Maintenance T erminal (LMT) with an Ethernet
interface. The LMT and TEST ports are 8 -pin RJ -45 connectors.
DMI LEDs
T able 8 -2 shows the possible states for the DMI front panel LEDs and the corresponding
indications. These LED indicators are located on the DMI front panel next to the DMI +27 V
DC connector (see Figure 1 -11 DMI Module Front P anel Detail on page 1 - 41 ) and are labeled
as follows:
• ALM (ALARM)
• INST (INST ANCE)
• ST (ST A TUS)
Table 8 -2 DMI LEDs States and Indications
ALM (Red) LED State INST LED State
ST A (Green) LED
State
Indication
Off Off Off
No DC P ower to FRU
On Orange On
LED Indicator T est (temporary; 0.5 sec
to 1 sec)
On
N/A
Off FRU F ailure
Off
N/A N/A
No FRU F ailure
Flashing
(1.5 sec-On/1
sec-Off)
N/A N/A
P artial (soft) FRU F ailure
N/A N/A
Flashing
(250 ms-On/250
ms-Off)
FRU Booting up (not active)
N/A N/A
On FRU Active
N/A
Green Flashing
(0.5 sec-On/0.5
sec-Off cycle count)
followed by 3
sec-Off
N/A
Instance Indicator and No FRU
Cabling Connection Errors Detected.
Cycle count equals FRU type instance;
where: 1 flash = 1st instance, 2 flashes
= 2nd instance, 3 flashes = 3rd instance,
so on and so forth.
N/A
Red
N/A
FRU Cabling Connection Error Detected
N/A = LED state is Not Applicable to indication
8 -8 68P09283A64 -3
FOA SEP 2007