Bosch Appliances D9112 installation manual Symptom Diagnosis Remedy, Phone Line Trouble

Phone Line Trouble

Phone line problems that are not corrected can result in the D9112 going into Communications Failure. You can program the D9112 to monitor one or two phone lines. See the D9112 Program Entry Guide (74-06145-000) for programming instructions.

If you enable the phone line monitor, SERVC PHONE LINE #1 (or 2 if two lines are used) appears in the command center’s display when the D9112 detects a problem on the phone line.

Symptom

Diagnosis

Remedy

SERVC PH LINE #1 (or 2 if two lines are used) appears in command center display.

D9112's phone line monitor detects a phone line as faulted.

1.Verify that the telephone cord is correctly connected to the RJ31X and the D9112.

2.Verify the Ground Start Jumper is in the correct position.

3.If using a ground start phone line, verify D136 relay is in socket K6/J5.

4.Verify that the RJ31X jack is wired correctly. The incoming phone line must be wired to terminals 4 and 5. The in- house phone system must be wired to terminals 1 and 8.

5.Verify that all telephones are on-hook. Leaving a telephone on hold after the other party hangs up creates an off-hook condition. Verify that no phones are on hold.

If completing the steps above does not restore the phone line, meter the phone lines. You should meter at least 7.5 VDC when the line is idle (on-hook). You should meter at least 13 mA of current when the line is active (off-hook). If your readings are below the minimum values, contact your telephone company repair service.

	D9112 Operation & Installation Manual
74-06144-000-C 2/96	Page 72	© 1993-1996 Radionics