Specifications

DS7400Xi Ver. 3+ Reference Guide Copyright © 1995-96 Detection Systems, Inc. Page 80
Zone Problems (Continued)
Symptom Probable Cause Possible Solution
Zones 9 and above show Not Ready,
Zone Trouble.
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.
a) The multiplex expansion module is not
installed properly.
b) Multiplex wiring is missing or not in-
stalled properly.
c) 8-Input remote module DIP switches are
not set properly.
d) 8-Input remote module covers are re-
moved.
e) The BusLoc® code is set incorrectly or
has not been programmed into modules.
f) Zone Programming is incorrect.
g) Multiplex module not programmed.
The output is programmed as “latch on
alarm” (0).
A ground fault condition exists.
An invisible zone is not ready.
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 re-
mote modules.
d) Replace covers or install the tamper bypass jump-
er.
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 Bus-
Loc® 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.
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.
17.4 General System Problems
Symptom Probable Cause Possible Solution
How to set the programming values
to the factory default.
Power LED is flashing, keypad dis-
plays Control Trouble Press #87.
#87 display = Oct. Relay Fault
#89 display = System Fault 20
#87 display = Multiplex Bus Fault
Can’t reset to factory default.
Enter a value of 01 in address 4058.
A control trouble exists.
a) The octal relay module (DS7488) is de-
fective or the wiring to the module is
defective.
b) There is no DS7488 or a DS7488 has
been removed from the system.
The Multiplex Bus is defective or shorted.
Keypad programming access is set to PAR-
TIAL from Remote programmer.
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.
Press #87 to determine the trouble condition.
a) Check the wiring to the module.
b) Enter, then exit programming mode. This will re-
scan the options bus and clear the problem.
Check wiring for shorts.
Change setting to FULL from the Remote program-
mer.