Instruction manual

7-1
Chapter 7 - Troubleshooting
Section 7-1 - Introduction
WARNING: SOME ELECTRONIC COMPONENTS STORE A HIGH VOLTAGE CHARGE,
EVEN THOUGH POWER IS NOT CONNECTED, AND CAN CAUSE A DANGEROUS SHOCK
IF TOUCHED. DO NOT TOUCH EXPOSED CIRCUITRY ON THE
SP40/2 PANEL UNLESS
THE CIRCUITRY HAS DISCHARGED FOR ONE HOUR AND A SAFE DISCHARGE
PROCEDURE IS USED.
WARNING: PROVIDE UL REQUIRED ALTERNATIVE SIGNALING MEANS DURING
TROUBLE CONDITIONS AND SERVICING TO ASSURE ADEQUATE PROTECTION OF
PEOPLE AND PROPERTY. HAVE QUALIFIED SERVICE PERSONS IMMEDIATELY
REPLACE ANY MODULES THAT HAVE MALFUNCTIONED.
CAUTION: Only qualified persons in accordance with the procedures in this manual should
conduct troubleshooting and servicing. Do not attempt to make other adjustments, modifications,
or repairs. Never use water, steam, cleaning liquids or sprays on the panel.
CAUTION: User servicing of the SP40/2 panel is limited to field-wiring changes and
following the instructions in Chapter 3 and procedures in this chapter of this manual.
AFTER ANY TROUBLESHOOTING PROCEDURE IS COMPLETED, PERFORM A COMPLETE
SYSTEM CHECKOUT AS DESCRIBED IN CHAPTER 3.
Section 7-2 - Troubleshooting
The panel monitors system integrity. Items monitored for integrity are:
1. Visual appliance circuit field wiring.
2. Audio appliance circuit field wiring.
3. Input voltage. AC (120VAC, 50-60 Hz), Backup Battery (24VDC).
4. Battery voltage level.
5. Battery circuit field wiring.
6. Amplifier functionality.
7. Digital Voice Section functionality.
System status is indicated to the operator via the AC and TROUBLE LEDs, the internal
TROUBLE sounder, and the Trouble Form C relay contacts. If a trouble condition is detected, the
panel will respond as follows:
1. Turn “ON” the TROUBLE LED.
2. Turn “ON” the internal sounder.
3. Change the state of the Form C trouble contact to the TROUBLE position.
When there are no trouble conditions detected, the AC LED will always be “ON” and the
TROUBLE LED will always be “OFF”. When a trouble condition is detected, the AC LED will
remain “ON” and the TROUBLE LED will always be “ON”.
Figure 7-1 shows the location of all trouble location LEDs within the panel. Table 7-1 on Page 7-3
cross-references the trouble location LEDs on the motherboard to the proper troubleshooting
procedure.