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Troubleshooting
4-2 Issue 2 November 1996
4. To return to data mode after using the escape sequence to enter
command mode, type the command line
ATO
Table 4-1. Troubleshooting Guidelines
Symptom Problem Solution
Both LEDs are off. Power is off. Check that the AC outlet is working.
Check that the power supply unit is
properly connected to the 8400B Plus
Data Module and to the AC outlet.
The green LED is
winking (750 ms on,
250 ms off), and the
red LED is inverted
winking (750 ms off,
250 ms on).
The 8400B Plus
Data Module has
lost
communications
with the PBX.
For the MSP-1 power supply, check
that the D8W cord is connected
between the LINE/POWER connector
of the power supply and the PBX wall
jack.
For the KS-22911,L2 power supply,
check that the 400B2 adapter is
connected to the PBX wall jack.
Note also that the line from the PBX
must be properly administered for the
8400B Plus Data Module.
The red LED is
winking (750 ms on,
250 ms off), and the
green LED is
inverted winking
(750 ms off, 250 ms
on).
The 8400B Plus
Data Module has
lost
communications
with the telephone.
Check that the D8W telephone cord is
securely connected between the
telephone and the PHONE jack on the
8400B Plus Data Module.
No dial tone is heard
when the telephone
handset is lifted. All
call appearance
LEDs on the
telephone are off.
Incorrect option
settings.
Change the With Telephone option to
Yes.
ENTER