Icom IC-M802 Service Manual page 82

4-2 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 Ω resister.
• Receiving
2
MEASUREMENT
UNIT
PLL Connect a digital multi
: J3E meter or oscilloscope
to
CP5301.
PLL Connect a digital multi
: J3E meter or oscilloscope
to
CP5401.
PLL Connect an RF volt-
meter to check point
P5201.
Connect a frequency
counter to check point
P5201.
4 - 3
VALUE
LOCATION
1.0 V
check point
Less than 4.0 V
4.2 V
check point
More than 0.8 V
Maximum level
63.999990 MHz
([USA], [CAN])
64.000000 MHz
([OTH])
ADJUSTMENT
UNIT ADJUST
PLL C5305
Verify
PLL C5521
Verify
PLL L5203,
L5204
X5251
([USA],
[CAN])
C5294
([OTH])