Kenwood 144MHz FM TRANSCEIVER K2E Service Manual page 35

Common Section
Item Condition
1.Setting and Connect the optional PG-2W
resetting DC cable to the power supply.
DC IN terminal voltage: 13.8V
1) Total illumination display
confirmation
Turn the Transceiver Power ON by pressing the power switch while the [F] key is pressed.
While the [F] key is pressed, all LCD segments light.
2) Full-resetting
After confirming that all LCD segments have lighted described in the Step 1 above, release
the [F] key, and then press the [F] key twice while "FL.RST?" appears on the display.
2 VCO After removing 3 screws fixing
Lock voltage the TX-RX unit (B/3), remove
Check the TX-RX (B/3) unit from the
CN9 connector of the TX-RX
unit (A/3).
1) Frequency: 136.000MHz
RX 2) Frequency: 173.990MHz
TX TX power: Low
1) Frequency: 136.000MHz
PTT: ON
2) Frequency: 173.990MHz
PTT: ON
After observing the VCO
lock voltage, connect the
TX-RX unit (B/3) to the
original position.
3.TX frequency 1) TX power: Low
Adjust Frequency: 145.990MHz
PTT: ON
4.Overvoltage Switch to Adjustment mode
warning and carry out the operations
reference for adjustment item A.
voltage (Refer to page 28)
Adjust/Check 1) LCD display: DC
Frequency: 145.050MHz
(E, E3)
Frequency: 146.050MHz
(K, K2, M, M2)
DC IN terminal voltage: 14.8V
To exit from the Adjustment
Mode, turn the transceiver
power OFF and then ON.
2) Frequency: 145.050MHz
(E, E3)
Frequency: 146.050MHz
(K, K2, M, M2)
DC IN terminal voltage: 17.5V
ADJUSTMENT
Measurement
Test equipment Unit Terminal
LCD total illumination display
DVM TX-RX LV
(A/3)
f. counter ANT
DC power supply
TH-K2AT/K2E/K2ET
Adjustment
Unit Parts Method
Initial configuration displayed after
the full-reset.
Check
TX-RX VR1 145.990MHz
(A/3)
[MENU] Write
Check
Specifications/
Remarks
0.7V or more
4.3V or less
0.7V or more
4.3V or less
±150Hz
Alarm sound and
display "DC ERR"
message.
35