INTRODUCTION
I-E96-313A
5 - 1
SECTION 5 - TROUBLESHOOTING
INTRODUCTION
This section explains the error indications and corrective
actions for the Digital Slave Output (DSO) module.
ERROR INDICATIONS AND CORRECTIVE ACTION
You can obtain the status of the DSO through an Infi 90 opera-
tor interface (e.g., Operator Interface Station, Engineering
Work Station, Configuration and Tuning Terminal) or the front
panel status LED indicators.
NOTE: If you look at the DSO front panel output status LED indica-
tors and none are lit, this may indicate a faulty DSO (an output must
be energized to light an LED). Check the master module for bad
quality on its output blocks.
Module Status LED
The front panel status LED has three states to indicate normal
operation and error conditions. Table
lists DSO status LED
states, error indications, probable causes and corrective
actions.
NOTE:
If the corrective actions in Table
do not correct a problem
with the DSO module, replace it.
Table 5-1. Status LED Indications and Corrective Actions
LED State
Indication
Probable Cause
Corrective Action
Solid Green Slave module operating
normally and communi-
cating with master
module
Normal operation
No action required
Off
Slave module not
enabled
Address set on S1 not the same
as address in master module
configuration FC 83 spec 1
Change address on S1 to corre-
spond with FC 83 spec 1
OR
Change address in FC 83 spec
1 to correspond with S1
Dipshunt not properly installed
between master module and
slave module
Verify dipshunt is installed prop-
erly (no bent pins) in slave
expander bus socket on MMU
backplane between master and
slave module
Master module configuration is
not correct
Verify FC 83 is in master module
configuration
