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6 Appendix A: Troubleshooting
Do not use this section as an acceptance testing
procedure. This information is provided as a
general guide to help you determine, recognize,
and resolve a D9068P during installation,
maintenance, and normal standby.
6.1 On-Board
LEDs
The D9068P has four on-board LEDs to indicate
various conditions.
Line 1 LED:
This LED blinks when a report is being
sent out on Line 1. When a line fault condition
occurs on Line 1, this LED lights steadily in
conjunction with the Sys Trouble LED, and of
course AX Series FACP DACT trouble. If the Line
1 LED lights steadily:
1. Use a voltmeter to measure the voltage present
across each telephone line (Tip to Ring), while
the telephone line is idle.
Ensure the standby telco battery voltage is
between 30 VDC and 50 VDC. The D9068P
accepts any voltage over 6 VDC. The voltage
polarity does not matter.
2. Check for other devices that are using the
telephone line such as fax machines, credit card
verifiers, or PBX systems.
NFPA 72 requires a dedicated telephone line
for fire reporting. If the devices sharing the
telephone line cannot be removed, ensure
they are wired so the D9068P’s line seizure
relay disconnects them when needed.
Measure the line voltage while these devices
are in use, and verify it remains above 6 V.
3. Check for intermittent faults on the phone line.
Make a test call to verify the line is free of
distortion and noise. Temporarily swap Lines
1 and 2 on the D9068P to check if the
problem indication moves to the D9068P’s
other telephone line channel. If the problem
indication moves, the telephone line is
causing the problem rather than the line
monitor.
Ensure the fault message is PHONE FAULT
and not COMM FAULT. Set report steering
for all events to Phone 1 Only if only one
telephone number is available for reporting.
COMM FAULT can also happen if one of the
phone lines has telco battery voltage, but
does not complete a call. Make test calls to
the receiver(s) on both telephone lines,
listening for the receiver ACK tone.
4. Verify two phone lines are available.
NFPA 72 requires the Auto Test Report be
sent on a different telephone line each time it
is sent. If only one telephone line is
connected to the D9068P, a COMM FAULT is
generated on every other test call.
Line 2 LED:
This LED blinks when a report is sent
on Line 2. When a line fault condition occurs on
Line 2, this LED lights steadily along with the
System Trouble LED, and the AX Series DACT
trouble. When the Line 2 LED lights steadily, refer
to the preceding steps for Line 1 LED.
Heartbeat LED:
This LED illuminates and blinks if
the D9068P is functioning properly. When not
illuminated:
• Check the D9068P’s main power. Refer to
Table
1
on page 6.
• Verify there are no wire faults in the power
connections.
• Refer to
Section 1.2.1 Power
on page 6 for
additional power requirements.
Sys Trouble LED:
This LED is off when the
D9068P operates properly, and lights steadily for
D9068P system (DACT) trouble. It also operates
with the D9068P’s on-board trouble relay (which is
not required, as the AX Series Intelligent Fire Alarm
Control Panel processes and displays via its LCD
display these troubles). The number of times the
Sys Trouble LED flashes determines which trouble
condition is indicated. Refer to
Table 6
on the
following page.
Caution: The voltage present while there is an
incoming call can be more than 100 VAC.