Specifications

5-30 Troubleshooting Plug-in Modules
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Troubleshooting Plug-
in Modules
Replace the cable from the Satellite Rack to the function box. Again unplug
and re-plug the BIS module and check if the LED lights up. If it does not,
proceed with the following:
 Plug any other (not faulty) module into the same slot and check if the LED
lights up. If the LED of the alternative module lights up, the BIS module is
defect and has to be replaced. If it does not, either the rack or the rack interface
card is defect. Proceed with the following:
 Replace the rack and plug in the BIS module into the new rack. If the LED on
the module does not light up, replace the rack interface card in the function
box.
❏ If a "LQVWHDGRIDQXPHULF and one or more INOP messages or a VPDOO"LQ
DGGLWLRQWRDQXPHULFare displayed for the BIS module, perform the following
actions:
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6WHS Refer to the following table. Correct the possible cause identified by the INOP mes-
sage and verify that the INOP disappears. The order of the possible causes reflects
their likelihood. Always start with the first to troubleshoot.
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BIS UN-PLUGGED BIS module is unplugged
from the rack.
Perform Step 5 on page -29
BIS MODULE MALFUNC Malfunction in the BIS
module hardware.
Overcurrent situation.
Enter BIS Task Window
1
.
Look for the message “BIS Engine or
DSC overcurrent”. If it is QRW displayed,
replace BIS module.
If it LV displayed, perform the following
procedure:
Disconnect the BIS Engine from module
and replug BIS module. If INOP persists,
replace module.
If INOP disappears, reconnect BIS
Engine ZLWKRXW'6& to module. If INOP
persists, replace BIS Engine.
If INOP disappears, reconnect DSC to
BIS Engine. If INOP persists, replace
DSC.
If INOP disappears, replace Module
Cable.
BIS ENGINE DISCONN BIS Engine not con-
nected.
Module Cable defective.
Make sure that the Module Cable is
properly connected.
If INOP persists replace Module Cable.