Icom IC-F7000 Service Manual page 24

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
• Receiving
2
MEASUREMENT
UNIT
PLL
: J3E
PLL
: J3E
PLL
resister.
5 - 3
LOCATION
Connect a digital multi
meter or oscilloscope
to the check point
CP5301.
Less than 4.0 V
Connect a digital multi
meter or oscilloscope
to the check point
CP5401.
More than 0.8 V
Connect an RF volt- Maximum level
meter to the check
point P5201.
Connect a frequency 64.000000 MHz
counter to the check
point P5201.
ADJUSTMENT
VALUE
UNIT ADJUST
1.0 V PLL C5305
Verify
4.2 V PLL C5521
Verify
PLL L5203,
L5204
R5255