Kenwood TH-K2AT Service Manual page 40

TH-K2AT/K2E/K2ET
Item Condition
8) LCD display: P13C,
Frequency: 145.000M Hz
PTT: ON
Low pow er
9) LCD display: P13H,
Frequency: 145.995M Hz
PTT: ON
3.Battery Sw itch to Adjustment mode
terminal and carry out the operations
reference for adjustment item B.
voltage (Refer to page 28)
Adjust/ TX pow er: Low
Check 1)LCD display: BAT
Frequency: 145.000M Hz
Frequency: 146.000M Hz
PTT: ON
Battery terminal voltage: 7.5V
(Adjust the output voltage from DC pow er supply until the voltage at the
battery terminal becomes 7.5V w hile the transceiver is transmitting.)
To exit from the Adjustment
M ode, turn the transceiver
pow er OFF and then ON.
2)Frequency: 145.000M Hz
Frequency: 146.000M Hz
PTT: ON
Battery terminal voltage: 6.4V
(Adjust the output voltage from DC pow er supply until the voltage at the
battery terminal becomes 6.4V w hile the transceiver is transmitting.)
4.DCS Sw itch to Adjustment mode
modulation and carry out the operations
balance for adjustment item L.
(Refer to page 32)
Detector: +P, –P
HPF: OFF
De-emphasis: OFF
TX pow er: Low
1)LCD display: DCS.BAL
Frequency: 145.000M Hz
Frequency: 146.000M Hz
PTT: ON
5.M AX DEV To exit from the Adjustment
M ode, turn the transceiver
pow er OFF and then ON.
M IC terminal input
AG: 1kHz/80mV
Detector: +P, –P
HPF: OFF
De-emphasis: OFF
TX pow er: Low
40
ADJUSTM ENT
M easurement
Test equipment
Pow er meter
Am meter
DC pow er supply
DVM
(E, E3)
(K, K2, M , M 2)
(E, E3)
(K, K2, M , M 2)
Linear detector
Oscilloscope
LPF: 3kHz
(E, E3)
(K, K2, M , M 2)
Linear detector
AG
Oscilloscope
LPF: 15kHz
Unit Terminal Unit Parts
TX-RX ANT Encoder
(A/3) [M ENU]
Encoder
[M ENU]
[M ENU]
LCD
LCD
TX-RX ANT
(A/3)
VR6
ANT VR5
M IC
Adjustment
Specifications/
Remarks
M ethod
Write 0.5W ±0.05W
0.8A or less
Write
Write
Check All segments
are lighted.
Check 4 to 6 seg-
ments are
lighted.
By tuning the
VR6, adjust
the modulation
w ave until
if becomes the
square w ave.
4.2kHz ±0.1kHz
According to the
larger +, –.
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