Icom IC-PW1 Service Manual page 20
Hf/50 mhz all band linear amplifier
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Also See for IC-PW1:
- Service manual addendum (201 pages) ,
- Service manual (178 pages) ,
- Instruction manual (24 pages)
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MAIN UNIT ADJUSTMENT (Continued)
ADJUSTMENT
ADJUSTMENT CONDITION
1
• Connect a DC ammeter to the
I
ALC
D
"HV" line between power supply
unit and PA unit.
• METER-1
2
• Exciter frequency
• Mode
• Transmitting
3
• 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.
4
• Disconnect a DC ammeter, and
then connect a DC ammeter to
the "HV" line between power sup-
ply unit and PA unit.
I
METER
1
• Connect a DC ammeter to the
D
"HV" line between power supply
unit and PA unit.
• METER-1
• Exciter frequency
• Mode
• Transmitting
• I
ALC and I
meter adjustment
D
D
FRONT
SIDE
MAIN UNIT
MEASUREMENT
UNIT
Controller
[METER-1]
: [I
] scale.
D
Front
Ammeter
: 14.1 MHz
panel
: RTTY
Controller
[METER-1]
: [I
] scale.
D
: 14.1 MHz
: RTTY
R15
R22
I
ALC adjustment
D
R22
I
meter adjustment
D
4 - 8
VALUE
LOCATION
Set [I
] meter to a half
D
value of connecting
ammeter.
38 A
9.7 – 10.3 A
34.7 – 35.3 A
The same value of the
ammeter.
MAIN unit
ADJUSTMENT
POINT
UNIT
ADJUST
MAIN
R22
Exciter
RF
power
The
load-
resistor
MAIN
R15
MAIN
R22
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