Kenwood TK-290 Service Manual page 43

TK-290
Common Section
Item Condition
1. Varicap shift 1) Set panel tuning mode
voltage Push Side2 to select
Mid VSWM
High 2) Push Side2 to select
VSWH
2. Voltage change 1) Set panel tuning mode
frequency Push Side2 to select
Low–Mid .
RX r1
TX 2) Push Side2 to select
.
t1
Mid–Hi 3) Push Side2 to select
RX .
r2
TX 4) Push Side2 to select
.
t2
Transmitter Section
Item Condition
1. Frequency 1) Set panel test mode
adjustment CH No. : 1
Signalling No. : 1
Select FRQ
in panel tuning mode
PTT : ON
2. Maximum 1) Set panel test mode
power CH No. : 3
check Signalling No. : 1
BATT terminal voltage : 7.5V
Select POW 255
in panel tuning mode
PTT : ON
3. TX high 1) Set panel test mode
power CH No. : 3
adjustment Signalling No. : 1
Select POW
in tuning mode
Push Orange to 3 point
adjustment mode
Select POW
L
PTT : ON
2) Push Side2 to select
POW
M
PTT : ON
3) Push Side2 to select
POW
H
PTT : ON
42
ADJUSTMENT
Measurement
Test-
Unit Terminal
equipment
DC VTVM TX-RX TP2
TP1
Caution : When adjusting transmit power and sensitivity, connect the cable to the SMA antenna connector on
the top panel. At this time, use the antenna-less type jig connector (E30-3287-08) in the universal connector.
Measurement
Test-
Unit Terminal
equipment
Power meter Panel ANT
f. counter
When the TCXO (X1) is replaced, perform the frequency tune
in PC tuning mode from the FPU menu.
Power meter Panel ANT
Ammeter
Adjustment
Unit Parts Method
Panel Top1/ –3V
Top2
–6V
4.15V
4.15V
4.15V
4.15V
Adjustment
Unit Parts Method
Panel Top1/ 155.000MHz
Top2
Check
Panel Top1/ 4.50W
Top2
Specifications/Remarks
± 0.1V
± 0.1V
± 0.05V
± 0.05V
± 0.05V
± 0.05V
Specifications/Remarks
± 50Hz
5.0W or more
± 0.1W
2.3A or less