Alinco DJ-160E, Service Manual

Page: 13 / 35

1. Transmitting Unit (DJ-460E)
Item Adjustment Point Adjustment Method Spec
I 1. Frequency
adjustment
TC307 (RF PCB) Set the unit in the transmission mode at 435.03MHz and
adjustment TC307. - -
(Transceiver tester, counter)
435.03MHz± 50Hz
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2. TX Power
adjustment
VR301 (RF PCB):
(Hi Power)
VR302 (RF PCB)
(Lo Power)
Adjustment VR301 so that TX power becomes 3.1W at
435.03MHz.
Adjustment VR302 so that RX power becomes 300mW at
435.03MHz.
r
................
-
... ......
3.1W±0.1W
300mW±50mW
u
I.
3. Modulation degree.
adjustment
VR204 (IF PCB) Input a signal of 1kHz/50mV into The Mic jack
_x
transmitting at 435.03MHz and adjust VR204 so that you
obtain 4.7kHz/Dev in the transmission' mode. ,
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4.7kHz ±0.1 kHz
f = o
I,
4. Subaudible tone VR203 (IF PCB)
Transmit at-435.03MHz and adjust VR203 to obtain a
frequency moduration of 3.0kHz, making sure that tone
burst 1750Hz within a range of 1750H z±20H z.i‘-
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3.0kHz ± 0.5kHz
5. DTMF.
VR205 (IF PCB) Push Q] in the transmission mode and adjust VR205 so:
thatyou obtain 3.1 kHz/Dev. , ......
~
■
"
. 3.1kHz ± 0.1kHz
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2. Receiving Unit (DJ-460E)
- ....
Item
Adjustment Point
\ ' ~ : i
... Adjustment Method
^ : ;
..Spec
■ „ i
:
c
1. VCO P/D Voltage
adjustment
T X -L105
RX— L103 £
Adjust L105 so that P/D Voltage"is 0.8V at 430.00MHz
'
(DC Voltmeter) in the transmission mode.-
Adjust L103 so that P/D Voltage is 1.3V at 430.00MHz
(DC Voltmeter) in the reception mode.
0.8V ± 0.3V .
1.3V ± 0.1V
2. Detection Coil
adjustment
L202 (IF PCB)
Input 1kHz, 3.5kHz/Dev. +66dB/* at 435.03MHz and
adjust L202 so that detection power becomes m ^i'rnum .
3. UHF FRONT END
adjustment
TC301, TC302,
TC303, L305, L306
At 435.03MHz and adjust TC301, TC302', TC303, L305
and L306, so that 12dB SINAD sensitivity becomes-
maximum.
under - 9dB^
4. S-meter
adjustment
VR202 (IF PCB) Input a signal of +6dB^i from transceiver tester at.
■
435.03MHz Turn VR202 so that Full-bar begins to right.
+6dB/t±1dB/t
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