Pll Unit Adjustment - Icom IC-F7000 Service Manual Addendum

5-2 PLL UNIT ADJUSTMENT

ADJUSTMENT ADJUSTMENT CONDITIONS
LPL LOCK 1 • Operating frequency : 0.5000 MHz
VOLTAGE • Mode
• Receiving
2 • Operating frequency : 0.4999 MHz
• Receiving
HPL LOCK 1 • Operating frequency : 29.9999 MHz
VOLTAGE • Mode
• Receiving
2 • Operating frequency : 0.0300 MHz
• Receiving
REFERENCE 1 • Wait for 5 minutes after power ON.
FREQUENCY • Terminate P5201 on the PLL unit to
ground with a 50 ohms resister.
• Receiving
2
MEASUREMENT
UNIT
PLL Connect a digital multi
: J3E meter or oscilloscope
to the check point
CP5301.
PLL Connect a digital multi
: J3E meter or oscilloscope
to the check point
CP5401.
PLL C o n n e c t
voltmeter to the check
point P5201.
Connect a frequency
counter to the check
point P5201.
5 - 3
VALUE
LOCATION
1.0 V
Less than 4.0 V
4.2 V
More than 0.8 V
a n R F Maximum level
64.000000 MHz
ADJUSTMENT
UNIT ADJUST
PLL C5305
Verify
PLL C5521
Verify
PLL L5203,
L5204
R5255