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53SL ES Series Mobile Radio Operating Manual April 2009
External Speaker
Section 3 - Dual Controls & External Speaker
To re-enable the internal speaker, proceed as follows:
1
Power up the mobile radio
2
Press buttons F2 and F5 at the same time, and release (see Figure 3.4).
3
Rotate the Select knob, until display reads "SPKR ENABL"
4
After a short time-out period, display will read "CYCLE PWR"
5
Power the radio off and back on, and the internal speaker will be enabled
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