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DS7400Xi ( 4+) Reference Guide Copyright © 2007 Bosch Security Systems, Inc. P/N: F01U035325-01 Page 89
Zone Problems (Continued)
Symptom Probable Cause Possible Solution
a) The multiplex expansion module is not
installed properly.
b) Multiplex wiring is missing or is not
installed properly.
c) 8-Input remote module DIP switches
are not set properly.
d) 8-Input remote module covers are
removed.
e) The BusLoc® code is set incorrectly or
has not been programmed into
modules.
f) Zone Programming is incorrect.
g) Multiplex module not programmed.
h) Multiplex Bus voltage is 12VDC or
greater. (Normal is approximately 8 to
10VDC.)
i) Multiplex Bus voltage is 5VDC or less.
a) Make sure the multiplex expansion module is
seated properly in the upper pins on the
DS7400Xi circuit board.
b) Check wiring and perform a system reset.
c) Correctly set the DIP switches for the 8-Input
remote modules.
d) Replace covers or install the tamper bypass
jumper.
e) BusLoc® can not be used with 8-Input remote
modules. If using 8-Input modules, remove the
BusLoc® code.
OR
If using two-input remote modules or the
DS7465, be sure to use BusLoc® when
programming. If not using BusLoc®, be sure to
remove the BusLoc® code from address 9999.
f) Program as a multiple zone input for DS7432 or
DS7460, a single zone input for contacts and
sensors, or program as a DS7465.
g) Program the module.
h) Two modules are programmed with the same
address. The problem will only occur when both
modulees are off normal. Isolate the duplicate
module by disconnecting sections of the bus
and performing a [PIN] + [System Reset].
Reprogram modules.
OR
The system is in the programming mode. Exit
the programming mode.
OR
Zones have been added to a system protected
by Busloc®. Clear Busloc®.
i) There is a short on the multiplex bus.
OR
There is a bad module on the bus.
OR
One or more modules on the bus are connected
backwards - reverse polarity.
Zones 9 and above show Not Ready,
Zone Trouble.
Never disconnect the
power when in the
programming mode.
Always disconnect the
Multiplex Bus or have the
DS7430 or DS7436 in
the disable
programming mode
when powering up or
down.
Invisible or silent zone activates
alarm output.
Keypad displays Fire Trouble, but
does not indicate any zones.
Keypad displays Not Ready, but no
zone number is displayed.
Program the output to follow zone alarms (6).
See system trouble: Ground fault.
Press [PIN] + [OFF] to display the zone number of
the invisible zone that is not ready.
(Normal is approximately 8 to 10VDC.)
The output is programmed as “latch on
alarm” (0).
A ground fault condition exists.
An invisible zone is not ready.
15.4 General System Problems
Symptom Probable Cause Possible Solution
How to set the programming values
to the factory default.
Enter a value of 01 in address 4058. Caution: Only enter a value of 01 in address
4058 when you are sure you want to
default the programming. Doing so will
immediately erase all programming.