EFJohnson 7780 service manual TX Indicator Red Indicates when the transmitter is keyed

TRANSCEIVER OPERATION

F1	F2	F3
		ENT

Figure 2-1 Limited Keypad Model

1

4

7

*

2

5

8

0

3	F1
6
	F2
9	CLR
	F3
#
	ENT

2.2.2 TOP PANEL INDICATORS

TX Indicator (Red) - Indicates when the transmitter is keyed.

RX Indicator (Green) - Indicates that the channel may be busy because a carrier is being detected.

Figure 2-2 Full Keypad Model

FCN (Function) - This is a dealer programmable switch that can control various functions (see Section 2.3.4).

Battery Release Button - Pushing this spring-loaded button upward releases the battery so that it can slide

AUX

PTT

FCN

Battery Release

Button

Low-Battery Indicator (Amber) -

Indicates that the battery charge is getting low and recharging will soon be required.

2.2.3 SIDE CONTROLS

AUX (Auxiliary) - This is a dealer programmable switch that can con- trol various functions (see Section 2.3.4). With the limited keypad (3-key) version, it is also the CLR key.

PTT (Push-To-Talk) - This switch

is pressed to key the transmitter. The red TX indicator on the top panel lights when the transmitter is keyed.

off the radio for recharging or replacement. Turn power off before removing the battery.

Accessory Connector (not shown) - This connector is on the opposite side of the transceiver, and it is the connection point for optional accessories such as a speaker-microphone.

2.2.4FRONT PANEL KEYS (LIMITED KEYPAD MODEL)

The following keys are located on the front panel shown in Figure 2-1:

F1, F2, F3 - Each of these keys can be dealer pro- grammed to control a specific function (see Section 2.3.4). These keys are also used in menus to scroll left ( ), scroll right ( ), and for the Enter (ENT) func- tion. The top key on the side (AUX) functions as a CLR key in menus.

November 1999
Part No. 001-7780-500	2-2