Alinco DJ-160E, Service Manual

Page: 10 / 35

■ ADJUSTMENT
(DJ160T/E)
1. Transmitting Unit (DJ-16OT)
O
2. Receiving Unit (DJ-16OT)
item Adjustment Point
, Adjustment Method
. . . . . ___
1. VCO P/D Voltage-
•
adjustment
■ L106 (VCO) Adjust L106 so that P/D voltage is 2.0V at 146.03MHz
(DC Voltmeter) in the transmission mode.
- -
-..................
2.0V :
_
l
2. Detection Coil
adjustment
L2Ô2 (IF PCB) Input 1kHz, 3.5kHz/Dev. +66dB/* ai 146.05MHz a n d ;;'
adjust L202 so that detection power becomes maximum -'
O
3. VHF F R O N TE N D ..
adjustment
..
L306,.L308, L309,
.
TC305, L311, L312
(RF PCB)
' "
At. 146.03MHz and adjust L306, L308, L309, TC3Ô5, L311,
and L312, so that 12dB SINAD sensitivity becomes
maximum.
"
,V":
'
‘
' '
Under -9 d B ^
4. S-meter
adjustment
VR202 (IF PCB). Input a signal of 17dB
fi
from transceiver tester ait
;
145.03MHz Turn VR202 so that Full-bar begins to tight.
"1
17dB/i±1dB/i
Item Adjustment Point
Adjustment Method
Spec
1. Frequency
adjustment
TC304 (RF PCB)
Set the unit in the transmission mode at 146.03MHz and
adjustment TC304.
(Transceiver tester, counter) ■
146.03MHz ±50H z
2. TX Power
adjustment
VR301 (RF PCB)
(Hi Power)
VR302 (RF PCB)
(Lo Power)
Adjustment VR301 so. that TX power becomes 3W at
146.03MHz. ' . V ;■ < ..
Adjustment VR302 so that TX power becomes 300mW at
146.03MHz. " : ■ ^
3.0W ± 0.1W ;■
300mW±50mW •
3. Modulation degree
adjustment
VR204 (IF PCB)
Input a signal of 1kHz/50mV into The Mic jack
transmitting at 146.03MHz and adjust VR204 so that you
obtain 4.7kHz/Dev in the transmission mode.
4.8kHz ±0.1 kHz ‘
4. Subaudible tone
VR203 (IF PCB) Adjust 88.5kHz by VR203 so that you obtain 800Hz/Dev. 800Hz ± 100Hz
5. DTMF. VR205 (IF PCB)
Push [T| in the'transmission mode and adjust VR203 so
that you obtain 3.1 kHz/Dev:
3.1 kHz ±0.1 kHz