Adjustment - Kenwood NX-420 K Service Manual

Controls
Selector
AUX key
PTT switch
Side1 key
Side2 key
■ Preparations for checking/tuning the transceiver
Before attempting to check/tune the transceiver, connect
the unit to a suitable power supply.
Whenever the transmitter is turned on, the unit must be
connected to a suitable dummy load (i.e. power meter).
The speaker output connector must be terminated with a
8 dummy load and connected to an AC voltmeter and an
audio distortion meter or a SINAD measurement meter at all
times during checking/tuning.
Panel Test Mode (K3 model only)
■ Test mode operation features
This transceiver has a test mode. To enter test mode, press
and hold the [ ] key while turning the transceiver power ON.
Before the transceiver enters test mode, the frequency version
information appears on the LCD momentarily. Test mode can be
inhibited by programming. To exit test mode, turn the trans-
ceiver power OFF. The following functions are available in
test mode.
■ Key operation
" " not appears on the LCD display
Key
Function
[Selector] Test channel up/down
Push: Squelch level up
[Side1]
Hold: Squelch off
Wide 5k/Wide 4k/Narrow/
[Side2]
Very narrow
[ ] Shift to panel tuning mode
[ ] Function on
[ ] MSK 1200bps and 2400bps 2400bps:
Push: Test signaling up
[ ] Hold: Test signaling up
continuously
[AUX] Analog/NXDN
[PTT] Transmit

ADJUSTMENT

Power switch/
Volume
SP/MIC
jack
Display
Channel No.
Squelch level
Squelch off: icon appears
Analog
Wide 5k: "W"
Wide 4k:"S"
Narrow : "N"
NXDN
Narrow : "N"
Very narrow: "V"
-
" " appears on the LCD
display
icon appears
Signaling No.
Analog: "A", NXDN: "N"
-
" " not appears on the LCD display
Key
Function
Use as the DTMF keypad.
[0] to [9] If a key is pressed during
and transmission, the DTMF
[#], [ ] corresponding to the key
that was presses is sent.
" " appears on the LCD display
Key
Function
[Selector] Test channel up/down
[Side1] Function off
[Side2] LCD all lights
[ ] High power/Low power
[ ] Function off
[ ] Compander on/off
[ ] Beat shift on/off
[AUX] Talk Around on/off
[PTT] Transmit
[0] to [9]
and Function off
[#], [ ]
• LED indicator
Red LED Lights during transmission.
Green LED Lights when there is carrier.
• LCD display in panel test mode
(Power ON)
Market code
Frequency range
" ": 806~870MHz
Squelch level
Channel No.
AW : Analog wide 5k mode
AS : Analog wide 4k mode
AN : Analog narrow mode
NN : NXDN narrow mode
NV : NXDN very narrow mode
NX-420
Display
-
Display
Channel No.
-
LCD all point appears
High: icon not appears
Low : icon appears
-
On: icon appears
On: icon appears
On: icon appears
-
-
Battery type detect
"LI": Li-ion battery
"MH": Ni-MH battery
"AL": Alkaline battery case
(After 2sec.)
Signaling No.
33