NEC Electra Elite IPK II System Hardware Manual page 629

Electra Elite IPK II
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Check BLF indication
for station.
1. Reset/replace SLI(4)/(8)-U10 ETU, and test.
2. Perform Second Initialization, and test; then
perform First Initialization and test.
3. Change CPUII( )-U( ) ETU, and test
using default program.
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System Hardware Manual
Ringing Problem on SLT
Check to see if ringing
problem is intermittent.
Check SLI(4)/(8)-U10 ETU for
ring voltage output with AC
meter.
Pass
Busy
BLF
Indication?
Idle
E2
Replace SLT.
Yes
Problem
solved?
No
No
Check to see if SLT
Intermittent
is call forwarded.
Problem?
Yes
No
Fail
RSG Test?
Busy
Check MDF
connection.
Document Revision 3
SLT defective.
Yes
Call
Forward?
Replace SLI(4)/(8)-U10 ETU.
Terminate SLT on MDF.
Idle
BLF
Indication?
Cancel call
Forwarding.
Check/replace
station cable.
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