Icom IC-7800 Service Manual Addendum page 387

RXPLL-B UNIT ADJUSTMENTS–Continued
ADJUSTMENT ADJUSTMENT CONDITION
1 • SUB display frequency
RX
SENSITIVITY
(50 MHz) • Mode
• Pre-amp. 2
• Connect an SSG to [ANT1] connec-
tor and set as;
Frequency : 50.0215 MHz
Level
Modulation : OFF
• Receiving
IF THROUGH 1 • SUB display frequency
(50 MHz)
• Mode
• Connect an SSG to [ANT1] connec-
tor and set as;
Frequency : 64.555 MHz
Level
Modulation : OFF
• Receiving
*This output level of a standard signal generator (SSG) is indicated as SSG's open circuit.
UNIT
Rear
: 50.020 MHz panel
: USB
: ON
: 0.32 µV* (–117 dBm)
Front
: 50.020 MHz panel
: USB
: 50 mV* (–13 dBm)
MEASUREMENT
LOCATION
Connect an AC milli-
volt meter to [EXT SP]
jack with 8 Ω load.
S-meter
4 - 14
ADJUSTMENT
VALUE
UNIT
Maximum audio level RX
PLL-B
Minimum level RX
PLL-B
POINT
ADJUST
L1222
C1265