Teledyne C-2000 - Manual (Page 88)

70
(Rev. 8/04)
®
Symptom 1.
Only one station handset is dead. Blank display on handset.
2.
All handsets are dead. Blank display on handset.
Correcti
v
e Action
1.
F
or portable handsets,
check connector for bent or
damaged pins.
2.
F
or all handsets,
including portables,
sw
ap sus-
pected handset and cable with a kno
wn good
handset
or other handset connected to system.
If symptom follo
ws the suspected handset,
replace handset. If not,
sw
ap CDBR or handset
cabling.
1. Check C-2000 circuit break
er is engaged.
2.
Cycle po
wer to the system,
using a 30 second
interv
al between break
er of
f to break
er on.
3.
Observ
e indicator lamps on front panel of
AR
TU.
Green light should be on when po
wer is applied.
Red light will be on while system is performing Built-In T
est
(approximately
fi
v
e minutes). If red
light stays on for more than eight minutes, remo
v
e and replace
AR
TU.
4. If
AR
TU
red
“f
ault
”
indicator is not illuminated
(b
uilt-in test passed),
then check LAN Bus for
wiring problems or defecti
v
e LAN De
vice.
Remarks * Allo
w
fi
v
e minutes for Built-In
T
est to
complete.
*
Red light on
AR
TU front panel will
remain lit and blink on/of
f e
v
ery tw
o
to three minutes if DC v
oltage to
AR
TU is less than 22
VDC (system is
in current limit). If this condition occurs,
ensure that a -802 mounting
tray is installed.
An -801 tray will let
v
oltage spik
es thru and reset the
AR
TU.
C. Corr
ecti
v
e
Action Guide