NEC Univerge SV8100, System Maintenance Manual

Page: 36 / 78

Issue 1.0 UNIVERGE SV8100
2 - 18 System Maintenance
F1
Low Volume Problems
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
1. Perform Second Initialization, and test.
2. Perform First Initialization, and test with
default program.
3. Replace CD-CP00-US
.
Problem
solved?
Done.
Replace CD-4COTB . Check line with dB
meter and/or contact
Telco.
Report Problem
to Telco.
Less than
-8 dB?
Line
Port
Reset or replace
CD-4COTB and
test again.
All lines?
Bridge on
system CO
line?
Remove it.
All stations?
Move suspected bad line to
good CD-4COTB
port. Move
good line to original
CD-4COTB
port.
Run a dB level test at DMARK
on lines with 1 kHz test tone. No
less than -8dB at MDF is
required.
Replace
Multiline SLT.
Problem
on port or
line?