Bosch Appliances Network Card D8125INV User Manual

Page of 40
 D8125INV 
 Troubleshooting 
 
 D8125INV Operation and Installation Guide  
 
© 2005 Bosch Security Systems 
Page 29 
49690E  
 
4.0 Troubleshooting 
Symptom 
Diagnosis 
Remedy 
 
D8125INV has lost 
communications with the FA400 
receiver.  This will cause all 
programmed RF points on that 
D8125INV to go missing 
immediately (missing alarms or 
missing troubles at control panel.) 
It will also cause a Point Bus Fail 1 
(or 2) at the control panel. 
Check for LED activity at 
receiver(s).   
Double-check wiring between 
D8125INV and FA400.   
 
+12 V/Vs to GND = approx. 
13 VDC 
 
DATA/OUT to GND = 
fluctuating voltage (data 
flowing)   
Make sure that jumper on FA400 is 
set to '1' if one FA400 is used on a 
D8125INV; If two FA400's are used 
on a D8125INV, set the jumper on 
one FA400 receiver to '1', and the 
jumper on the FA400 receiver to 
'2'. 
 
The D8125INV hasn't 'heard' from 
an RF point for the length of the 
programmed supervision interval.  
The most common reasons are 
damage to the transmitter, physical 
environmental changes, or a dead 
battery.   
To find out which RF points are 
missing, press [DIAG] for RF 
diagnostics, then [2] for Off-
normal point’s status.  Display will 
start at lowest numbered off-
normal point and automatically 
scroll up.  [NEXT] or [PREV] keys 
will switch to manual scrolling. 
Locate missing transmitter.   
Check for physical damage.  Check 
battery voltage, which should equal 
3.0 VDC min.  Bring transmitter 
closer to receiver and cause a 
transmission, to determine if a 
range problem exists due to a 
change in the environment.  For 
range problems, a 2nd FA400 per 
D8125INV, or an FA570/575 
repeater may be used. 
 
Internal diagnostics checksum 
failure 
Clear EEPROM, and reprogram 
the D8125INV and all of its 
transmitters.  If EEPROM failure 
re-occurs, return the D8125INV 
for repair/replacement. 
Undesired point response at 
D8125INV (e.g. RF point is normal 
when it should be faulted, etc.)   
Note:  
When testing RF points, 
first check for proper point 
response at D8125INV RF 
diagnostics.  When point 
responses are correct at the 
D8125INV, then move on 
to testing point responses 
at the control panel. 
Programmed mode of transmitter 
is incorrect. 
Check the mode charts in Table 9: 
Recommended Point Types/Point 
Responses,
 p.23.  Make sure mode 
selection is correct for that 
transmitter model.  For Universal 
transmitters, make sure the mode 
selection is correct for the external 
circuit type (NO/NC/EOL?/not 
used), and whether or not the 
internal contact (magnet) is used. 
 
Wiring of external circuit is 
incorrect. 
Correct wiring of external circuit