Technical data

Chapter 8: Troubleshooting

8.2.16 Procedure P

If the green PWR LED is "ON," the yellow SYSTEM TROUBLE LED is "ON," and D5 AMP

LED is blinking, an Auxiliary preamp trouble has occurred.

Perform the following:

1. Turn Aux Volume Pot (R100) fully clockwise.

2. Initiate the AUX input if it is being used (via Remote MIC).

3. Reset power to the SP40S board by turning it OFF and reenergizing it. Remove

battery power first, then remove AC power. Wait 30 seconds. Apply AC Power first,

then apply battery power.

4. Replace the motherboard.

8.2.17 Procedure Q

If the green PWR LED is "ON," the yellow SYSTEM TROUBLE LED is "ON," and D4 MIC

LED is blinking, a Mic preamp trouble has occurred.

Perform the following:

1. Initiate the MIC input to verify its functionality.

2. Reset power to the SP40S board by turning it OFF and reenergizing it. Remove

battery power first, then remove AC power. Wait 30 seconds. Apply AC Power

first, then apply battery power.

3. Replace the motherboard.

8.2.18 Procedure R

If the green PWR LED is "ON," the yellow SYSTEM TROUBLE LED is "ON," and D93 BATT

CHG TRB LED is "ON," a battery charger trouble has occurred.

NOTE: The CHG TRB LED turns ON during an AC TROUBLE. Restoring the AC Voltage turns

OFF the CHG TRB LED.

Perform the following:

1. Remove batteries and measure the voltage at the battery terminals (TB10). If voltage

is present, above 20 Volts there is no problem with the battery charger.

2. If there is no voltage at the battery terminals (TB10) while the SP40S is running on

AC power, then there is a problem with the battery charger. Replace the

motherboard.

SP40S Multi-Function Facility Communication System Manual, Revision D