NEC Electra Elite IPK II System Hardware Manual page 623

Electra Elite IPK II
___________________________________________________________________________________
Yes
All
Terminals
affected?
Check for Internal
Dial tone.
No
Internal
Dial Tone?
Yes
Check SW 1~8 on COI(8)-U10
ETU for proper switch setting.
Check conduit and frame ground to
system for ground start trunks.
1. Reset and test; replace COI(8)-U10 ETU and test. If trouble persists go to step 2.
2. Perform Second Initialization. If trouble persists go to step 3.
3. Perform First Initialization. If trouble persists go to step 4.
4. Replace CPUII( )-U( ) ETU, and test using default program.
___________________________________________________________________________________
System Hardware Manual
No Outside Dial Tone Access
No
1. Reset terminal
and test.
2. Replace terminal
OR
Reset ESI(8)-U10
ETU and test.
3. Replace ESI(8)-U10
and test.
Test for CO dial
tone at MDF with
test set, and check
CO wiring.
Yes
CO
Dial Tone?
C3
SLT
Multiline
Terminal or SLT?
Both
Check for Internal
Dial tone.
Yes
Internal
Dial Tone?
No
Go to Flowchart
A1.
1. Check PRG 21-04 and 14-01-07 for
Station Restriction.
2. Check PRG 15-06 for Trunk access.
No
Have Telco
check lines.
Document Revision 3
Check for Internal
Dial tone.
No
Internal
Dial Tone?
Yes
1. Perform Second
Initialization.
2. Reset and test
SLI(4)/(8)-U10 ETU.
3. Replace and test
SLI(4)/(8)-U10 ETU.
Leave an SLI(4)/(8)-U( )
ETU and an ESI(8)-U( )
ETU installed. Go to
Flowchart A1.
14 - 11