TM9100 Service Manual General Information 121© Tait Electronics Limited August 20054.9 Visual and Audible IndicationsVisual and audible indicators give information about the state of theradio. Visual indications are provided by the STATUS LEDs, function-keyLEDs, and LCD display. The information conveyed by the STATUS LEDsis listed in Table 4.11. The behavior of the function-key LEDs dependson the way the function keys are programmed. The LCD displaynormally displays channel and user information, or error messages. Formore information on the LCD display during normal operation, refer tothe user’s guide. The error messages are listed in Table 6.1 on page 144.Audible indications are provided in the form of different tones emittedfrom the speaker. The information conveyed by the tones is given inTable 4.12 on page 122.Table 4.11 Visual indications provided by the STATUS LEDsLED color LED name Indications MeaningsRed Transmit LED is on The radio is transmittingLED flashes (1) The transmit timer is about to expire(2) The radio has been stunnedGreen Receive andmonitorLED is on There is activity on the current channel, although it mightnot be audibleLED flashes (1) The radio has received a call with valid special signaling(2) The monitor has been activated(3) The squelch override has been activatedAmber Scanning LED is on The radio is scanning a group of channels for activityLED flashes The radio has detected activity on a certain channel andscanning has halted on this channel
