Issue
When does the D128 dual phone line switcher module indicate a phone line failure?
Solution
An amber phone line status LED lights on the D128 module when the control/communicator measures less than 25VDC or 10mA of current across the tip and ring of the telephone line. The D8112 and D9112 monitor the telephone lines for a programmable interval before indicating a trouble condition.
Issue
What is the proper alignment procedure for the DS455Q?
Solution
Alignment by LED
Apply power to the system.
Use the supplied interruption sheets to cover the lower optical modules of the transmitter and the receiver.
Look into the upper scope of the transmitter 10 cm (3.9 in.) to 15 cm (5.9 in.) from the optical module. Use the turntable to adjust the horizontal angle.
Use the horizontal and vertical adjustment screws to locate the receiver in the center of the viewing area.
Look at the Level Meter on the receiver to proceed with fine tuning.
Use a screwdriver to adjust the angle of the upper optical module.
As more beam energy is received, each LED status follows this sequence: ON_Flashes quickly_Flashes slowly=>OFF
Continue fine tuning until all LEDs turn off.
Remove the interruption sheets from the lower optical modules and cover the upper optical modules of the transmitter and the receiver. Repeat the alignment process for the lower optical modules.
When all LEDs turn off, the alignment is complete. Remove the interruption sheets from the optical modules.
Alignment Using a Voltmeter
Apply power to the system.
Use the supplied interruption sheets to cover the lower optical modules of the transmitter and the receiver.
Insert the voltmeter leads into the alignment check terminals.
Set the voltmeter to 10 volts VDC.
Use a screwdriver and adjust the upper optical modules to obtain the maximum voltage. In an ideal environment, the voltage is 3.0 VDC or above.
Remove the interruption sheets from the lower optical modules and cover the upper optical modules of the transmitter and the receiver. Repeat the alignment process for the lower optical modules.
Make sure to remove the interruption sheets and close the covers when alignment is complete.
Overview: Charging circuit is overcharging the battery. Panel is damaged.
Issue
Reading 15vdc on the battery charging circuit.
Solution
Replace the panel. The voltage regulator is failing on the panel.
Issue
On 2000 series panel, point codes are programmed for points between 9 and 24. When programmed points are tested the keypad reads "PT(#) PT DISABLED (where # is the number of the point being tested).
Solution
Pt text (Point Text) was never changed from default that read "PT(#) PT DISABLED".
