D9412G/D7412G/D7212G Installation & Troubleshooting Quick Reference Guide
Page 14 © 2004 Bosch Security Systems, Inc.43700F
D9412G/D7412G / D7212G
Troubleshooting
System Diagnosis Remedy
Short on D8125 POPEX
module’s Data Expansion
Loop or short on panel’s
ZONEX data terminals (25
& 26, or 27 & 28).
A short on either the Data Expansion Loop or
the ZONEX data terminals generates a PT BUS
TROUBLE report.
While the short remains, the panel responds as
though the sensor loop for each point connected
to the POPEX module was shorted.
Check wiring for shorts.
Panel transmits PT BUS
TROUBLE reports.
Erroneous alarm and/or
trouble reports may follow
PT BUS TROUBLE report.
Erroneous alarm and/or
trouble events for off-board
points appear at command
centers.
The POPIT address switches
are set incorrectly (for
points 128 or 248) or the
OctoPOPIT address switches
are set incorrectly.
Check to be certain all POPIT and OctoPOPIT
address switches are set correctly. POPITs cannot
be used for points 128 or 248 (these are reserved
for panel functions). D8128C OctoPOPITs
cannot be used for Points 121-128 or 241-248.
D8128D OctoPOPITs cannot use Points 128 or
248.
Short on Aux Power,
terminal 3 or ZONEX
power, terminal 24.
Terminals 3 and 24 share a common circuit
breaker. Check wiring and devices connected to
these terminals for shorts or grounds.
All off-board points are
MISSING.
If only one POPEX module
is connected to the panel,
POPEX module may be
incorrectly connected to the
panel or Data Expansion
Loop may be disconnected
from POPEX module.
Check POPEX module for correct connections
to the panel and the Data Expansion Loop.
If you find missing points, the service walk test
may help you diagnose the problem (see Section
3.7.1 Extra Points).
Keyswitch points (P## Type
is programmed as 4, 5, 6, 7,
or 9) report as missing. If
area is armed, the point
reports a MISSING
ALARM. If the area is
disarmed, the point reports a
MISSING TROUBLE.
Point is disconnected from
the Popit data bus.
The POPIT cover may have
been removed and not
replaced or the cover is not
seated properly.
The point will restore when the Popit bus is
reconnected or when the POPIT cover is seated
firmly on the POPIT.
Connected points show as
extra points when the point
bus is shorted beyond the
programmed debounce time.
The points have no point
index programmed.
This will be corrected when the short is returned
to normal.
Table 9 (cont’d): Troubleshooting Problems with Points
3.7.1 Extra Points
If the panel is not in the service walk test mode when an extra point trips, the panel responds to it as a local TROUBLE event
at the command center or central station (see Routing in the panel’s Program Entry Guide). It displays the custom text for the
point number set in the point’s dipswitch or on-board point location.
When an extra point is tripped during the service walk test, it reports as an EXTRA point in the panel’s event log and at the
local printer (if installed). Once an extra point is identified, check the programming to see if it has a Point Index
programmed and if so, if the point index is appropriate for the application and has the correct area assignment.
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