Service manual

TH-K4AT/K4E
39
ADJUSTMENT
Item Condition
Measurement Adjustment
Specifications/
Test equipment Unit Terminal Unit Parts Method
Remarks
2. TX power
Write (DC IN
terminal: 13.8V)
High power
Mid power
Low power
3.Battery
terminal
reference
voltage
Adjust/
Check
Connect the optional PG-2W
DC cable to the power supply.
DC IN terminal voltage: 13.8V
Switch to Adjustment mode
and carry out the operations
for adjustment item I.
(Refer to page 31)
1)LCD display: P13L,
Frequency: 430.000MHz
PTT: ON
2)LCD display: P13C,
Frequency: 435.000MHz
PTT: ON
3)LCD display: P13H,
Frequency: 439.995MHz
PTT: ON
Switch to Adjustment mode
and carry out the operations
for adjustment item J.
(Refer to page 32)
4)LCD display: P13L,
Frequency: 430.000MHz
PTT: ON
5)LCD display: P13C,
Frequency: 435.000MHz
PTT: ON
6)LCD display: P13H,
Frequency: 439.995MHz
PTT: ON
Switch to Adjustment mode
and carry out the operations
for adjustment item K.
(Refer to page 32)
7)LCD display: P13L,
Frequency: 430.000MHz
PTT: ON
8) LCD display: P13C,
Frequency: 435.000MHz
PTT: ON
9) LCD display: P13H,
Frequency: 439.995MHz
PTT: ON
Switch to Adjustment mode
and carry out the operations
for adjustment item B.
(Refer to page 28)
TX power: Low
1)LCD display: BAT
Frequency: 435.000MHz
PTT: ON
Battery terminal voltage: 7.5V
DC power supply
DVM
Power meter
Am meter
DC power supply
DVM
TX-RX
(A/3)
DC IN
ANT
Encoder
[MENU]
Encoder
[MENU]
Encoder
[MENU]
Encoder
[MENU]
Encoder
[MENU]
Encoder
[MENU]
Encoder
[MENU]
Encoder
[MENU]
Encoder
[MENU]
[MENU]
LCD
Write
Write
Write
Write
Write
Write
Write
Write
Write
Write
Check
5.0W - 5.1W
2.0A or less
1.5W ±0.05W
1.4A or less
0.5W ±0.05W
0.8A or less
All segments
are lighted.
■■■■■■■■■
(Adjust the output voltage from DC power supply until the voltage at the
battery terminal becomes 7.5V while the transceiver is transmitting.)