Alinco DJ-493 Service Manual page 31

The DJ-493/496 does not require a serviceperson to manipulate the compo­
nents on the printed-circuit board, except the trimmer when adjusting reference
frequency and deviation.Most of the adjustments for the transceiver are made by
using the keys on it while the unit is in the adjustment mode.Because the adjust­
ment mode temporarily uses the channels, frequency must be set on each chan­
nel before adjustments can be made.For instructions on how to program the
channels, see the "DJ-493/496 INSTRUCTION MANUAL" which came with the
product.In consideration of the radio environment, the frequency on each chan­
nel must be near the value (+/-1 MHz) listed in the table below.To enter the ad­
justment mode, set key lock and input 490217(DJ493: F key one time, VOL key
one time, SQL key two times, KL key one time, VM key two times.).Decimal point
at 100MHz and 10MHz appears in LCD. (To release the mode, same manner to
enter the adjustment mode.)
Channel frequencies used in the adjustment mode
Memory
Channel function
Channel
1
Reference frequency adjustm ent
2
High power adjustm ent
3 Low power adjustm ent
4 Minimum frequency sensitivity adjustment
5 Medium frequency sensitivity adjustment
Maximum frequency sensitivity adjustment
6
7 S-m eter 1 ) adjustm ent
(
S-m eter ( FULL ) adjustm ent
8
9 Deviation
10
DTMF ( 1 ) test (DJ-496)
11
DTMF ( D ) test (DJ-496)
13 Tone 88.5 Hz test
15 DCS code 255 test
16 Tone burst test
17
Aging ( Not required to use )
Frequency
T
C
i _
445 MHz
435 MHz
445 MHz
435 MHz
445 MHz
435 MHz
430 MHz 430 MHz
435 MHz 445 MHz
449.995 MHz
439.9875 MHz
435 MHz 445 MHz
445 MHz
435 MHz
445 MHz
435 MHz
445 MHz
435 MHz
445 MHz
435 MHz
c y u ^
435 MHz
IV l 1 1
445 MHz
435 MHz
445 MHz
435 MHz
A A C * 4 U 7
435 MHz
H H J IV l 1 1L.