Bosch D9412GV2 Troubleshooting Manual page 68

D9412GV2/D7412GV2 | Troubleshooting Guide | 3.0
A B
Using Table 40 on page 68, determine the keypad's
address. Using either RPS or the D5200 Programmer,
select GV2MAIN → COMMAND CENTERS →
COMMAND CENTER ASSIGNMENTS.
For the keypad you are using, does the Scope
prompt show NO KEYPAD?
Remove all wiring from the SDI bus. Connect
the affected keypad directly to the SDI bus
terminals on the control panel.
Does the keypad still display CALL FOR
SERVICE?
1. Install the keypad at its original
location.
2. Set your digital voltmeter (DVM) to
measure resistance.
3. With all SDI wiring still
disconnected from the control
panel, connect the red DVM lead to
one of the keypad data conductors.
4. Connect the black DVM lead to the
other keypad data conductor.
Does the DVM indicate a short?
Connect the black DVM lead to a
known good earth ground. One at
a time, connect the red DVM lead
to each of the keypad data
conductors.
Refer to
page 98.
1. Disconnect the affected keypad from the
SDI bus.
2. Connect another keypad with the same
DIP switch address directly to the control
panel's SDI bus terminals.
Does this keypad show CALL FOR
SERVICE?
Replace the original keypad.
Replace the control panel.
A C
68
- If the DVM indicates a short
on either conductor, refer to
TTP49 Wire Shorted to
Ground on page 106.
- If the DVM does not indicate
a short on either conductor,
refer to TTP47 Open Wiring
on page 100.
TTP46 Shorted Wiring on
Troubleshooting
A C
Change the keypad's Scope prompt to one of the
options listed in Table 41
If there are other keypads on the system, you
might also need to change the Scope prompt for
those keypads.
1. Remove the cover from a working keypad.
2. View and record the keypad's DIP switch settings.
3. For testing purposes only, reconfigure the affected
keypad's DIP switches to match those of the working
keypad.
Does the affected keypad still show CALL FOR
SERVICE?
1. Return the keypad's DIP switches to their original
settings.
2. Refer to Table 40
address.
3. Using either RPS or the D5200 Programmer,
select GV2MAIN → COMMAND CENTERS →
COMMAND CENTER ASSIGNMENTS.
4. For the keypad address you are using, change the
Scope prompt to one of the options listed in
Table 41 on page 69.
Return the keypad's DIP switches to their original settings.
Connect a working keypad from this site to the existing wires
at the affected keypad's location.
Do not change the DIP switch settings of the working
keypad.
Does the keypad show CALL FOR SERVICE?
Replace the original keypad.
The keypad data wiring has an open. Refer to
Wiring on page 100.
Table 40: Keypad DIP Switch Settings
Switch
Address # 1 2
1 ON ON
2 OFF ON
3 ON OFF
4 OFF OFF
5 ON ON
6 OFF ON
7 ON OFF
8 OFF OFF
*Encoding Tone ON/OFF.
Bosch Security Systems, Inc. | 11/05 | F01U011024B
on page 69.
to determine the keypad's
TTP47 Open
3 4 5* 6
ON ON ON
ON ON ON
ON ON ON
ON ON ON
OFF ON ON
OFF ON ON
OFF ON ON
OFF ON ON