Adjustment Mode - Alinco DJ-175 Service Manual

2) Adjustment mode

The adjustment should be operated in the Adjustment mode. Therefore except for the reference
frequency, deviation and tone-deviation adjustments an operator won't touch the components on
the board, but most of the adjustments should be done by operating the dial and keys on the unit.
During such operation, memory channels are used temporary therefore it is required to program
memories before the unit is set to the adjustment mod. Please refer the chart below for the
programming channels. The frequencies may be varied within the range of ±0.2Mhz depending
on the RF environment around your work area, and refer the instruction manual for how to
program the memories into the memory-channels.
To enter the adjustment mode, press "F" then "KL" to key-lock the unit. Then press the
numeric keys in order of "4", "9", "0", "2", "1" and "7". Observe that decimal points appear on the
display below 100MHz and 10MHz digits. To exit from the adjustment mode, repeat the whole
sequence (key-lock then enter the code in order). NEVER RESET THE UNIT WHILE
OPERATING IN THE SET MODE. This may reset whole adjustment values resulting the
malfunction of the unit in the operating mode. The chart below shows the adjustment points and
interface between the unit and instruments. Please use an attenuator in case the specifications of
the linear-detector and frequency counter may exceed the requirement herein.
* Simply memory the frequencies only into the relative memory channels.
Channe
Adjustment menu
l
1 Frequnecy Adjustment
2 TX-output / High power
3 TX-output / Mid power
4 TX-output / Low power
5 Microphone deviation
6 CTCSS tone deviation
7 DCS deviation
11 Sensitivity adjustment (lower edge)
12 Sensitivity adjustment (center range) 150.000
13 Sensitivity adjustment (upper range)
14 Squelch adjustment (minimum)
15 Squelch adjustment (maximum)
16 S-meter adjustment (1)
17 S-meter adjustment (Full)
Frequency
T, E, EUK TFH
162.000
145.000
162.000
145.000
162.000
145.000
162.000
145.000
162.000
145.000
162.000
145.000
162.000
145.000
137.000
137.000
150.000
173.000
173.000
162.000
145.000
162.000
145.000
162.000
145.000
162.000
145.000