Fault
Fault Description
No.
15
Exchange line cannot be put on
hold.
One station only.
16
Exchange line cannot be put on
hold.
More than one station.
17
Line does not flash on hold.
Any station.
18
No internal music on hold.
Any station.
19
No external music on hold.
Exchange line cannot be
release by hook switch
operation.
Any station.
Exchange line not release by
speaker key with handset on
hook.
Any station.
OTHER EXCHANGE LINE FAULTS
TEST/REPLACEMENT SEQUENCE IN PREFERRED ORDER
OFB-E
Station
P.T.U.
2
1
3
4
5
1
1
Master Plug Pack
Other Procedures
Station
1
1
2
1. Check links J3 and J4 are in
2
correct position on HRDB-E (pos.
1-2).
1. Check external music source
2. Check external music source
terminators.
3. Check links J3 and J4 are in
correct position on HRDB-E (pos.
1-2).