Technical data

Chapter 8: Troubleshooting

8.2 General

The SP40S Multi-Function Facility Communication System monitors system integrity. Items

monitored for integrity are:

• Visual appliance circuit field wiring

• Audio appliance circuit field wiring

• Input voltage: AC (120VAC, 60 Hz), Backup Battery (24VDC)

• Battery voltage level

• Battery circuit field wiring

• Amplifier functionality

• Digital Voice Section functionality

• Battery charge voltage

• Tone generators

• Audio chain

System status is indicated to the visual indicators on the user interface, the internal Trouble

Sounder, and the Trouble and AC Trouble Form "C" relay contacts. If the AC (primary power) is

removed or low, the trouble the panel responds as follows:

• Turns "ON" the AC Trouble LED indicator on the user interface.

• Turns "ON" the System Trouble LED indicator on the user interface.

• Turns "ON" the internal sounder.

• Changes the state of the Form C AC Trouble contact to the TROUBLE position.

• Changes the state of the Form C General Trouble contact to the TROUBLE position.

(After 170 minutes if SW2-Position 2=ON or after 30 seconds if SW2-Position 2=OFF)

Any other trouble detected by the panel is reported as follows:

• Turns "ON" the System Trouble LED indicator on the user interface.

• Turns "ON" the internal sounder.

• Changes the state of the Form C General Trouble contact to the TROUBLE position.

When there are no trouble conditions detected, the user interface has the POWER ON indicator

illuminated while the SYSTEM TROUBLE and AC TROUBLE indicators are OFF. If the

POWER ON indicator is not illuminated, check to see if D100 and/or D109 (on the PC board) are

illuminated.

Figure 8-1 shows the location of all trouble location LED indicators within the SP40S. Table 8-1

cross-references the trouble location LED indicators on the PC board to the proper

troubleshooting procedure.

NOTE: When the System Trouble indicator is ON, indicating a panel Trouble, at least one of the

other yellow LED indicators is also ON, indicating the trouble location.

SP40S Multi-Function Facility Communication System Manual, Revision D