Rxpll-B Unit Adjustments - Icom IC-7800 Service Manual

4-4 RXPLL-B UNIT ADJUSTMENTS

ADJUSTMENT ADJUSTMENT CONDITION
40M OUTPUT
1 • Dualwatch
• SUB display frequency
• Mode
• Receiving
LPL LOCK
1 • SUB display frequency
VOLTAGE
• Mode
• Receiving
2 • SUB display frequency
• Mode
• Receiving
HPL LOCK
1 • SUB display frequency
VOLTAGE
(VCO1)
• Mode
• Receiving
(VCO2)
2 • SUB display frequency
• Mode
• Receiving
(VCO3)
3 • SUB display frequency
• Mode
• Receiving
(VCO4)
4 • SUB display frequency
• Mode
• Receiving
(VCO5)
5 • SUB display frequency
• Mode
• Receiving
(VCO6)
6 • SUB display frequency
• Mode
• Receiving
(VCO1)
7 • SUB display frequency
• Mode
• Receiving
(VCO2)
8 • SUB display frequency
• Mode
• Receiving
(VCO3)
9 • SUB display frequency
• Mode
• Receiving
(VCO4)
10 • SUB display frequency
• Mode
• Receiving
(VCO5)
11 • SUB display frequency
• Mode
• Receiving
MEASUREMENT
UNIT
: ON RX
PLL-B
: 60.000 MHz
: USB
RX
: 60.000 MHz PLL-B
: USB
: 1.499 MHz
: USB
RX
: 7.999 MHz PLL-B
: USB
: 14.999 MHz
: USB
: 21.999 MHz
: USB
: 29.999 MHz
: USB
: 44.999 MHz
: USB
: 60.000 MHz
: USB
RX
: 0.030 MHz PLL-B
: USB
: 8.000 MHz
: USB
: 15.000 MHz
: USB
: 22.000 MHz
: USB
: 30.000 MHz
: USB
4 - 10
LOCATION
C o n n e c t a n R F Maximum voltage
voltmeter to CP701
(40 MHz).
C o n n e c t a D C
2.0 V ±0.1 V
vo l t m e t e r t o C P 1
(LV1).
Less than 4.0 V
4.0 V ±0.1 V
C o n n e c t a D C
vo l t m e t e r t o C P 2
(LV2).
4.0 V ±0.1 V
4.0 V ±0.1 V
4.0 V ±0.1 V
4.0 V ±0.1 V
C o n n e c t a D C
vo l t m e t e r t o C P 2
(LV2).
ADJUSTMENT
POINT
VALUE
UNIT ADJUST
RX
PLL-B repeatedly
RX
PLL-B
RX
PLL-B
4.0 V ±0.1 V
1.2 V–2.0 V RX
PLL-B
1.2 V–2.0 V
1.2 V–2.0 V
1.2 V–2.0 V
1.2 V–2.0 V
Adjust
L702,
L703
C154
Verify
C222
C232
C242
C252
C262
C272
Verify
Verify
Verify
Verify
Verify