D9412GV2/D7412GV2 | Troubleshooting Guide | 3.0 Troubleshooting
74 Bosch Security Systems, Inc. | 11/05 | F01U011024B
TTP34: Dial Tone Does Not Occur after Red
PHONE LED Lights
Figure 31: RJ31X Wiring
4
5
8
1
T1
T
R
R1
RING (red)
TIP (green)
RJ31X
2
7
1
2
3
4
5
6
Initial Actions
Make sure that you performed the actions
in TTP33: Control Panel Does Not
Communicate with Central Station by
Telephone on page 72.
Ensure the phone lines are wired correctly on the telco
connector block and the RJ31X. Refer to
. Figure 31
Procedure
Connect a telephone butt set to the TIP and RING
posts on the control panel. Refer to
Figure 32. Turn the
butt set on.
Do you hear a dial tone?
Refer to
TTP47 Open Wiring on page 100 to
determine the phone line problem between the telco
connector block and the RJ31X. If the problem still
exists, refer to
1 - RJ31X Jack
2 - TIP
TTP46 Shorted Wiring on page 98.
3 - RING
Disconnect the wiring from Terminals 1 and 8 on the RJ31X.
4 - Telco connector block
Do you continue to hear the dial tone?
5 - Outside telco
6 - Premises telephone
The RJ31X is wired in reverse.
1. Move the wire connected to T4 and connect it
to T1.
Figure 32: Control Panel TIP and RING Posts
PHONE
LED
RED
ON when
communicating
OFF when idle
PHONE LINE SEIZED
TIP
RING
TELCO
RING
TIP
PHONE LINE
SEIZED
1
2
TELCO CORD
MODEL D161
2. Move the wire connected to T5 and connect it
to T8.
3. Connect the wire previously connected to T1 to
T4.
4. Connect the wire previously connected to T8 to
T5.
5. Repeat the test.
Replace the control panel. Repeat the test.
Does the new control panel operate properly?
The phone line connected to the control panel does
not operate correctly. Refer the customer to the local
phone company.
You cannot validate correct operation of the
phone line by measuring voltage during the
communication sequence.
1 - TIP post
2 - RING post
The problem is solved.
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