4 - 8
MAIN UNIT ADJUSTMENT (Continued)
I
D
ALC
I
D
METER
ADJUSTMENT
ADJUSTMENT
ADJUSTMENT CONDITION
MEASUREMENT
VALUE
POINT
UNIT
LOCATION
UNIT
ADJUST
1
2
3
4
1
• Connect a DC ammeter to the
“HV” line between power supply
unit and PA unit.
• METER-1
: [I
D
] scale.
• Exciter frequency
: 14.1 MHz
• Mode
: RTTY
• Transmitting
• Connect a load-resistor between
“HV” line and “GND” line on
power supply unit.
• Transmitting
• Disconnect a DC ammeter, and
then connect a DC ammeter to
the “HV” line between power sup-
ply unit and a load-resistor.
• Disconnect a DC ammeter, and
then connect a DC ammeter to
the “HV” line between power sup-
ply unit and PA unit.
• Connect a DC ammeter to the
“HV” line between power supply
unit and PA unit.
• METER-1
: [I
D
] scale.
• Exciter frequency
: 14.1 MHz
• Mode
: RTTY
• Transmitting
Controller
Front
panel
Controller
[METER-1]
Ammeter
[METER-1]
Set [I
D
] meter to a half
value of connecting
ammeter.
38 A
9.7 – 10.3 A
34.7 – 35.3 A
The same value of the
ammeter.
MAIN
Exciter
MAIN
MAIN
R22
RF
power
The
load-
resistor
R15
R22
MAIN unit
R22
R22
R15
I
D
ALC adjustment
I
D
meter adjustment
• I
D
ALC and I
D
meter adjustment
FRONT
SIDE
MAIN UNIT
Summary of Contents for IC-PW1
Page 1: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 16 VOLTAGE DIAGRAM 18 Mar 2011 ...
Page 24: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 16 Jun 2010 ...
Page 42: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 16 VOLTAGE DIAGRAM 18 Apr 2010 ...
Page 96: ...HF 50 MHz ALL BAND LINEAR AMPLIFIER iC PW1 ...
Page 175: ...MNF F1 EP2 TO REGRELAY BOARD MLF EP1 F2 TO REGRELAY BOARD EP35 I N FG 8 19 FIL AC BOARD 8 20 ...
Page 201: ...A 5449MZ S 3 1999 Icom Inc 1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan Count on us ...