Frequency Adjustment - Icom IC-FR5000 Service Manual Addendum

• FREQUENCY ADJUSTMENT

1) Select an adjustment item using cursor or [] / [] keys of the PC's keyboard.
2) Set or modify the adjustment value as specifi ed using [] / [] keys of the PC's keyboard, then push the [ENTER] key.
ADJUSTMENT CONDI-
ADJUSTMENT
PLL LOCK 1
VOLTAGE
RX 2 • CH.
(Band center) • Receiving
RX 3 • CH.
(Band high) • Receiving
TX 4 • CH.
(Band low) • Transmitting
TX 5 • CH.
(Band center) • Transmitting
LOCK 1 • CH.
VOLTAGE • Receiving
VERIFY
RX
(Band low)
RX 2 • CH.
(Band center) • Receiving
TX 3 • CH.
(Band low) • Transmitting
TX 4 • CH.
(Band high) • Transmitting
RX 1 NOTE: Only when the RX frequency is not in the specifi ed range, re-adjust the RX frequency.
FREQUENCY
• CH.
VERIFY
• Receiving
TX FRE- 1
QUENCY
2 • CH.
• Transmitting
• I/O CHECK WINDOW
Lock voltage verify
TION
1) Connect an RF power meter to the
TX antenna.
2) Set the preset adjustment value on
–
the adjustment utility window.
: 1-1 • Select the item [RX LVA L], then
push the [ENTER] key.
: 1-2 • Select the item [RX LVA H], then
push the [ENTER] key.
: 1-3 • Select the item [TX LVA L], then push
the [ENTER] key.
: 1-4 • Select the item [TX LVA H], then
push the [ENTER] key.
: 1-5 • Verify the lock voltage at each chan-
nels on the [RX LIVIN] item on the
"I/O Check window" as below.
: 1-6
: 1-7 • Verify the lock voltage at each chan-
nels on the [TX LIVIN] item on the
"I/O Check window" on the MAIN/-A
: 1-8
UNIT as below.
: 1-8 • Connect an frequency counter to the
1st LO check point as below.
1) Set the item [TX Mode] to "1."
– 2) Connect an RF power meter to the
TX antenna.
: 1-9 1) Adjust the frequency using [] / []
keys of the PC's keyboard.
2) Push [ENTER] to store the value.
• 1ST LO CHECK POINT
OPERATION
(MAIN/-A UNIT)
GND RXLO
CPU FLASH
6 - 6
ADJUST-
MENT VALUE
ITEM
[LV (RX L)] 161 [3.15V]
[LV (RX H)] 153 [3.00V]
[LV (TX L)] 191 [3.74V]
[LV (TX H)] 36 [0.7V]
[RX LVA L]
[RX LVA H]
(Automatic
adjustment)
[TX LVA L]
[TX LVA H]
[RX LIVIN]
0.5–1.5 V
(I/O Check
(Verify)
window)
0.5–1.5 V
[TX LIVIN] (Verify)
(I/O Check
2.0–3.5 V
window)
(Verify)
220.2500 MHz (1st LO)
[RX REF]
( ±100Hz)
"1"
[TX Mode]
(Analog Voice)
[TX REF] 173.9000 MHz
DSUB