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4-6 TUNER ADJUSTMENT
SWR
DETECTOR
TUNER
REFERENCE
ADJUSTMENT
ADJUSTMENT
ADJUSTMENT CONDITION
MEASUREMENT
VALUE
POINT
UNIT
LOCATION
UNIT
ADJUST
1 • Main display frequency
: 24.950 MHz
• Mode
: FM
• [RF POWER]
: Max. CW (200W)
• [TUNER]
: Through
• APC
: OFF
• Connect a 50
Ω
dummy load to
[ANT1] connector.
• Transmitting
CTRL
Connect a DC volt-
meter or oscilloscope
to CP101 (REF).
Minimum voltage
CTRL
C104
ADJUSTMENT CONDITION
DISPLAY
OPERATION
• Enter the tuner adjustment mode:
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 ON.
1
2
3
TUNER-ADJUST MODE
-- TUNER --
Adjusting Now
-- TUNER --
OK
Push [F-7 (START)] to start tuning.
Verify the display shows “Adjusting Now”.
Verify the display shows “OK”.
Summary of Contents for IC-7800
Page 1: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 65 VOLTAGE DIAGRAM 67 Dec 2009 ...
Page 79: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 60 VOLTAGE DIAGRAM 64 Feb 2009 ...
Page 157: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 57 VOLTAGE DIAGRAM 59 Aug 2008 ...
Page 245: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 57 VOLTAGE DIAGRAM 59 Jul 2008 ...
Page 333: ...THE TRANSCEIVER i7800 SERVICE MANUAL S 14015HZ C1 2 Mar 2006 ...
Page 555: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan S 14015HZ C1 2 C 2004 2006 Icom Inc ...