Chapter 4. Error Analysis and Fault Isolation
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4.7.4 TERMPOWER Errors
The I/O module displays the TERMPOWER status for both the internal and the external
bus (see Figure 4–6). The nominal TERMPOWER voltage for both buses is +5 V dc.
Figure 4–6 I/O Module LEDs
CXO5947A
External
TERM POWER
disable LED
Internal
TERM POWER
disable LED
•
The green internal and external TERMPOWER LEDs are ON during normal operation
•
Whenever a TERMPOWER overcurrent condition exists, the associated LED is OFF
When an internal TERMPOWER overcurrent condition occurs, you must replace the I/O
module. When an external TERMPOWER overcurrent condition occurs, you must first
replace the associated cable. If this does not correct the problem, then replace the I/O
module.