Product manual

Maintenance, Fault finding procedures
Technical Product Manual - DCT1800-GAP
TD 92093 (1/LZBNB 103 108 R4D) / 2006-03-09/ Ver.C
© 2006
35
Unplug relevant cable
from L TU board and
test reception of DT at
the plug outlets with
test telephone.
Dial tone present?
N
- Error in wiring to PBX.
- Extension number not registered or blocked
in PBX
Y
Delete old cordless
phone from system and
subscribe new cordless
phone with the same
extension number.
Dial tone present?
N
Y
B
Error in analogue circuitry of LTU:
- Replace relevant LTU-board
- Subscribe old cordless phone
with original extension number
Press the hook key on
the new cordless
phone.
END
Old cordless phone
defect, replace it
011