FlashGuard 2000B Troubleshooting Guide
Section 3 Flashhead will not operate in any mode. Control power indicator on,
Possible Cause: Trigger control board defective, or incorrect DIP switch setting.
Diagnostic Test: Perform “Flashhead Isolation Test” (pg. 9) and “Power Supply Isolation Test” (pg.10) Also compare trigger board DIP switch settings with default settings in manual.
Corrective Action: Set DIP switches according to specifications. If no trigger output is observed when performing the flashhead isolation test, replace the trigger control board.
Possible Cause: Insufficient trigger voltage to the flashhead.
Diagnostic Test: If tower height is greater than 340 feet, remove the connector at terminal E13 on the motherboard, and connect it to E14. This will boost the voltage to the flashhead by approximately 10%.
Corrective Action: Leave the connector at E14.
Possible Cause: Flashtube and/or trigger transformer faulty.
Diagnostic Test: Perform the Power Supply isolation test to check for trigger pulses.
Corrective Action: If trigger pulses are present and high voltage neon lamp is lit then replace flashtube and/or trigger transformer.
Section 4 Flashhead operates properly in day mode, but no strobe in night mode and trips the strobe alarm.
Possible Cause: Trigger control board faulty.
Diagnostic Test: Perform “Power Supply Isolation Test” (pg. 11) to check for trigger pulses.
Corrective Action: Replace the trigger control board.
Possible Cause: Diode board DB1 faulty.
Diagnostic Test: Remove the two mounting screws on the control panel. Disconnect DB1, and measure resistance both ways across each diode. Make sure no diodes have shorts. If shorted, DB1 is faulty. Note: The diode board DB1 is located under the control panel where the test switches are.
Corrective Action: Replace DB1.
Section 5 Flashhead operates properly in night mode. No flash in day mode, strobe alarm is on.
Possible Cause: Trigger control board faulty.
Diagnostic Test: Perform “Power Supply Isolation Test” (pg. 10) to check for trigger pulses.
Corrective Action: Replace the trigger control board if test fails.
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