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User's Manual

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ACT-VHF-I-500PA User Manual
ACT-VHF-I-500PA-USR-DOC-V1.1, 07/02/2019 Page 7 of 31
LED_ALARM
Red light will be off if there is no alarm.
Red light will be on if there is any alarm.
RESET: reserved.
Note:
1) The front fan covers can be removed to clean the air intake path. No screw driver is needed, and no
disassembly of the PA is required.
2) When a warning occurs and the PA enters auto-protection mode, the only way to clear this state is to
cycle power on the PA module once the problem(s) is resolved. Otherwise all warning LEDs will
remain on even if the problem(s) no longer exists.