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Bosch | 09/04 | 74-06200-000-F24
D2071A | Operations & Installation Guide |
6.0 Troubleshooting
To help prevent problems, read the preceding sections of
this guide and confirm the control panel is correctly
installed and programmed.
6.1 Phone Line Trouble Buzzer, LED, and
Relay Activated
The Phone Line Trouble and Failure to Communicate
(communications failure) activate the Phone Line
Trouble Buzzer, LED, and Relay.
6.2.1 Phone Line Trouble
If the Phone Line Trouble Buzzer, LED, and Relay
activate or a TROUBLE ZN B or TROUBLE ZN C is
received:
1. Ensure the cords for both lines are correctly
connected to the RJ31X or RJ38X jacks and the
D2071A.
2. Ensure the RJ31X or RJ38X jacks are correctly
wired. The incoming telephone line must be wired
to Terminals 4 and 5. The in-house telephone
system must be wired to Terminals 1 and 8.
3. Ensure all telephones are on hook and not on hold.
Some telephone company systems automatically
drop the voltage and current when telephones are
left off hook for extended periods. Generally,
placing the telephone on hook restores the
telephone line.
If you perform Steps 1 through 3 and the telephone line
is still not restored, meter the telephone line’s voltage
and current. The telephone line should meter a
minimum of 20 VDC when the D2071A is idle (on
hook). If the voltage is below 20 VDC, meter for
current. The telephone line must have a minimum
current of 10 mA. If the readings are below the
minimum values, contact your telephone company
repair service.
6.2.2 Communications Failure
Communications failure occurs after ten unsuccessful
attempts to reach the receiver. Follow the procedure
described in
Section 6.2.1 Phone Line Trouble to confirm
the telephone lines at the D2071A installation are
working properly.
If the telephone lines are working, monitor them
(preferably at the receiver) for one of the symptoms
listed in Table 11.
6.0 Troubleshooting
Table 11: Communications Failures
Symptom Solution
The line rings but the
receiver does not
pick up.
• Confirm the lines are
correctly connected to the
receiver.
• Confirm the correct prefixes
and telephone numbers for
the receiver are programmed
into the D2071A.
The D2071A reaches
a busy signal for all
ten attempts to reach
the receiver.
• Confirm the correct prefixes
and telephone numbers for
the receiver are programmed
into the D2071A.
• The receiver’s call load might
be too great. Additional
telephone lines might be
needed for the receiver.
• Confirm the telephone lines
are not shorted between the
telephone company’s
equipment and the receiver.
Place a call to the number for
the receiver. If you hear the
line ring (but the ring
detector does not light) or if
you hear a busy signal and
the green on line (OL)
indicator is not lit, call the
telephone company for
service.
The receiver answers
the call and provides
an acknowledgment
tone, but the
communicator does
not transmit its
reports.
Confirm the receiver is
producing a 2300 Hz
acknowledgment tone.
The receiver answers
the call and provides
an initial handshake
acknowledgment
tone, but does not
acknowledge the
D2071A Report
transmission with a
kiss-off
acknowledgment
tone.
• Confirm the receiver is
compatible with the format
the D2071A is using (either
BFSK or Superfast). Refer to
the Transmit BFSK function
in Section 4.0 Program
Record Transmit on page
20.
• Noisy telephone lines can
interfere with report
transmission. Try making a
voice call on the line to
confirm the noisy condition.
You might need to have the
telephone company check
the lines.