Pub. 42004-605L2B
Model 701-804 SmartSeries
®
Handset Station with Auxiliary Jack
Page: 9 of 16
\\s_eng\gtcproddocs\standard ioms - current release\42004 instr. manuals\42004-605l2b.doc
03/04
Problem
Possible Solution
Feedback during page
only
•
Check within the enclosure for a purple wire on terminal 7: this is the
default setting for local speaker mute. If the wire is on terminal 8, then
the speaker is un-muted and may be causing feedback. Connect the wire
to terminal 7.
•
An adjacent speaker could be causing feedback. If an adjacent speaker
is the source of the feedback, adjust the orientation of the speaker so that
it is not aimed directly at the station. As a last resort, enable the mutual
muting function of the station. This is done by interconnecting terminal
7 of the two stations with the spare orange wire in the system cable (if
this wire is available).
Crosstalk
Likely to be external to the assembly and related to system cable faults.
When the assembly is in an ADVANCE system, faults may be automatically detected, transmitted to the
MCU in data messages, and printed out. Fault messages and possible solutions for their causes are
described in the table below.
Fault Message
Cause and Effect
Possible Solution
Watch-Dog timer
Processor has reset
xd times
(Where x is the
number of times the
watchdog timer has
reset the processor.)
Cause
—The watchdog timer has forced the
processor to reset. This occurs when the reset
pins (
J4
) on the Base-16 PCBA are
temporarily shorted or when the watchdog
timer does not receive regular status pulses
from
U2
on the Base-16 PCBA.
Effect
—The processor maintains a count of
the number of resets. If the station is powered
down, the count restarts at zero. The station
still amplifies incoming pages. On the fourth
and subsequent resets, the x value in the error
message is 0.
•
Verify that the reset pins
(
J4
) on the Base-16
PCBA are not shorted.
•
Replace the Base-16
PCBA.
Stuck Contact on
Polled Device
Paging Pressbar
Depressed
Cause
—The station has been in page mode
longer than the configured page limit.
Effect
—Station page is cut off. When the
pressbar is released, a restore message is sent
to the MCU. The station then resumes normal
operation.
•
Verify that neither the
handset pressbar nor the
headset page switch is
stuck.
•
Replace the Handset
Amplifier PCBA.
•
Replace the Base-16
PCBA.
Stuck Contact on
Polled Device
Handset Off-hook
Cause
—The station has been in the off-hook
state longer than the configured time limit.
Effect
—Station handset/headset operation is
cut off. When the station is returned to the
on-hook state, a restore message is sent to the
MCU. The station then resumes normal
operation.
•
Verify that neither the
handset is off-hook nor
the headset is connected.
•
Replace the Handset
Amplifier PCBA.
•
Replace the Base-16
PCBA.