Adjustment - Alinco DJ-500E Service Manual

■ ADJUSTMENT

Item
5 V line voltage
VCO P/D voltage
Frequency
VHF power output
UHF power output
VHF deviation
UHF deviation
Adjustment Point
Turn VR605 so that the voltage of 16 pin of
VR605
IC601 should be 5.1 V.
Adjust L401 so that the voltage of C362 (+) is
L401 (RX VCO)
1.5 V.
(VHF)
Adjust L501 so that the voltage of C362 (+) is
L501 (TX VCO)
2.0 V.
(VHF)
(DJ-500E)
L406 (RX VCO)
Adjust L406 so that the voltage of C343 (+ ) is
(UHF)
1.1 V.
(DJ-500T)
Adjust L406 so that the voltage of C343 (+ ) is
1.9 V.
(DJ-500E)
L504 (TX VCO)
Adjust L504 so that the voltage of C343 (+ ) is
(UHF)
2.1 V.
(DJ-500T)
Adjust L504 so that the voltage of C343 (+ ) is
3.0 V.
TC209 Set the unit in the transmission mode at
435 MHz (DJ-500T: 445 MHz) and adjust
TC209.
VR201 On "HI" position, turn VR201 for 6.6 W output
at 145.0 MHz 13.0 V.
VR204
On "LO" position, turn VR204 for 0.6 W output
at 145.0 MHz 13.0 V.
VR202 On "HI" position, turn VR202 for 5.6 W output
at 435 MHz 13.0 V (DJ-500T: 445 MHz
13.0 V)
VR203
On "LO" position, turn VR203 for 0.6 W output
at 435 MHz 13.0 V (DJ-500T: 445 MHz
13.0 V)
VR604
Input a signal of 1 kHz/50 mV into the Mic jack
and adjust VR604 so that you obtain 4.8 kHz/
Dev in the transmission mode.
VR601
Input a signal of 1 kHz/50 mV into the Mic jack
and adjust VR601 so that you obtain 4.8 kHz/
Dev in the transmission mode.
Adjustment Method
- 1 0 -
Spec
5.1 V±0.1 V
1.5 V ± 0 .3 V
(145 MHz)
2.0 V ±0.3 V
1.1 V±0.2 V
(435.0 MHz)
1.9 V ± 0 .2 V
(445.0 MHz)
2.1 V±0.3 V
3.0 V ±0.3 V
435 MHz
±500 Hz
(445 MHz
±500 Hz)
6.5 W ±0.5 W
0.5 W±0.1 W
5.5 W ± 0.3 W
0.5 W±0.1 W
4.8 kHz
±0.2 kHz
4.8 kHz
±0.2 kHz