Tuner Adjustment - Icom IC-7800 Service Manual

4-6 TUNER ADJUSTMENT

ADJUSTMENT ADJUSTMENT CONDITION
SWR
1 • Main display frequency
DETECTOR
• Mode
• [RF POWER]
• [TUNER]
• APC
• Connect a 50
[ANT1] connector.
• Transmitting
ADJUSTMENT CONDITION
TUNER
1 • Enter the tuner adjustment mode:
REFERENCE
q Turn power OFF.
w Terminate [REMOTE] jack with
a 2-conductor 3.5(d) mm mini-
plug.
e While pushing [M.SCOPE]
and [EXIT/SET], turn power
2
ON.
3
MEASUREMENT
UNIT
CTRL
: 24.950 MHz
: FM
: Max. CW (200W)
: Through
: OFF
Ω
dummy load to
TUNER-ADJUST MODE
-- TUNER --
Adjusting Now
-- TUNER --
4 - 18
LOCATION
C o n n e c t a D C Minimum voltage
v o l t m e t e r o r
oscilloscope to CP101
(REF).
DISPLAY
Push [F-7 (START)] to start tuning.
Verify the display shows "Adjusting Now".
Verify the display shows "OK".
OK
ADJUSTMENT
POINT
VALUE
UNIT ADJUST
CTRL
OPERATION
C104