Alinco DJ-500E, Service Manual

Page: 11 / 25

Item Adjustment Point
Adjustment Method
Spec
Subaudible tone
deviation (DJ-500T)
VR1
On the "ENC” mode at 449 MHz, turn VR1 so
that the deviation is 0.8 kHz.
0.8 kHz
±0.1 kHz
1750 Hz tone burst
deviation (DJ-500E)
VR1
Pressing Tone button at 435.0 MHz, turn VR1
so that the deviation is 3.5 kHz.
3.5 kHz
±500 Hz
DTMF deviation VR1
Pressing Q] key at 435.0 MHz
(DJ-500T: 445.0 MHz), turn VR1 so that the
deviation is 3.3 kHz.
3.3 kHz
±500 Hz
UHF receiving
sensitivity
(SG output: Mod
1 kHz, 3.5 kHz/Dev)
TC201
TC202
TC203
L602
L603
L607
(1) Set the frequency at 435.0 MHz
(DJ-500T: 445.0 MHz) and turn the
squelch control to OFF.
(2) Adjust TC201, TC202, TC203, L602 and
L603, so that the RX sensitivity becomes
maximum.
(3) Adjust L607 so that the audio output
becomes maximum.
(12
dB SINAD)
(EMF) under
—6
dBp
VHF receiving
sensitivity
(SG output: Mod
1 kHz, 3.5 kHz/Dev)
L221
L222
L223
(1) Set the frequency at 145.0 MHz and turn
the squelch control to OFF.
(2) Adjust L221, L222 and L223 so that the
sensitivity becomes maximum.
under - 6 dB^i
S-meter
(SG output: + 6d B |j
EMF)
VR603 (VHF)
VR609 (UHF)
Turn VR603 so that the [Q begins to light.
Turn VR609 so that the [Q begins to light.
+ 4 ~ + 8 dBp
Squelch sensitivity VR606
(1) Connect the antenna terminal to the
chassis ground and set the squelch
volume to the 10 o’clock direction.
(2) Turn VR606 to set the threshold point.
Threshold
point
■ RF BOARDS ADJUSTMENT POINTS h
S <D
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