Kenwood TK-2402, Service Manual

Page: 27 / 46

TK-2402(V)/2402/2406/2407
27
ADJUSTMENT
Common Section
Item Condition
Measurement Adjustment
Specifi cations / Remarks
Test-
equipment
Unit Terminal Unit Parts Method
1. Setting 1) Power supply voltage
DC power supply terminal : 7.5V
2. Receive
Assist
Voltage 1) Auto tuning
*Note Digital
Voltage
Multimeter
TX-RX
ANT
CVIN
TX-RX FPU 4.0V±0.1V
2) CH: Low Check 0.6V or more
3. Transmit
Assist
Voltage 1) Auto tuning
*Note TX-RX FPU 4.0V±0.1V
2) CH: Low
Check 0.6V or more
*Note: At test mode, click [Tune Assist Voltage] button in test mode dialog box, then start automatic adjustment of Receive/Transmit assist voltage.
Transmitter Section
Item Condition
Measurement Adjustment
Specifi cations / Remarks
Test-
equipment
Unit Terminal Unit Parts Method
1. Frequency 1) TEST CH: Center
PTT:
ON
f. counter ANT TX-RX FPU 155.100MHz ±50Hz
2. High Power 1) TEST CH: Low, Low’, Center,
High’, High (5 points)
2) BATT terminal voltage: 7.5V
3) PTT: ON
Power
meter
Ammeter FPU 5.0W ±0.1W
2.0A or less
3. Low Power 1) TEST CH: Low, Center, High
(3 points)
2) BATT terminal voltage: 7.5V
3) PTT: ON
1.0W ±0.1W
1.0A or less
4. DQT
Balance
2
1) TEST CH: Low, Low’, Center,
High’, High (5 points)
2) Deviation meter fi lter
LPF: 3kHz
HPF: OFF
3) PTT: ON
Deviation
meter
Oscilloscope ANT The Deviation of
20Hz frequency is
fi xed.
Change the 1kHz
adjustment value to
become the same
deviation of 20Hz
within the specifi ed
range. ±0.2dB
5. Maximum
Deviation
*Note
1) TEST CH: Center, Low, Low’,
High, High’ (5 points)
2) Deviation meter fi lter
LPF: 15kHz
HPF: OFF
3) PTT: ON
2.0kHz (According
to , –) ±50Hz
Note:
FPU AUTO INPUT
1kHz/150mV