Icom IC-F410 - Section 9 Board Layouts; Section 8 Semi-Conductor Information; Beep Adjustment; Front Unit (IC-F410;F420)

5 - 6
5-4 BEEP ADJUSTMENT
BEEP AUDIO
ADJUSTMENT
ADJUSTMENT ADJUSTMENT CONDITION
MEASUREMENT
VALUE
POINT
UNIT LOCATION UNIT ADJUST
1 • Operating frequency: Any
• Connect an audio generator to
pin 25 (MAIN unit; J2) and set
as:
1 kHz / 550 mV
• Squelch : OPEN
• Volume level: 1
• Receiving
Rear
panel
Connect an AC mil-
livoltmeter with 4 Ω
load to the [SP]
jack.
62.5 mV FRONT R60
DC power supply
13.2 (13.6) V / 15 A
AC
millivoltmeter
Speaker
4 Ω
SINAD
meter
Audio
generator
• MAIN unit
• FRONT unit
R60
Beep level
adjustment
J4, pin 25
Audio input point
1
15
16
30
25
J4
+
–