Icom IC-706MKIIG, Service Manual

Page: 15 / 85

4-1 PREPARATION BEFORE SARVICING
■
REQUIRED TEST EQUIPMENT
DC power supply
RF power meter
(terminated type)
Frequency counter
RF voltmeter
Standard signal
generator (SSG)
FM deviation meter
Modulation analyzer
Distortion meter
Oscilloscope
Digital multimeter
AC millivoltmeter
DC voltmeter
DC ammeter
Audio generator
Spectram analyzer
Attenuator
External speaker
EQUIPMENT GREDE AND RANGE EQUIPMENT GREDE AND RENGE
4 - 1
SECTION 4 ADJUSTMENT PROCEDURES
Output voltage : 13.8 V DC
Current capacity : 30 A or more
Measuring range : 10–200 W
Frequency range : 1.8–500 MHz
Impedance : 50
Ω
SWR : Less than 1.2 : 1
Frequency range : 0.1–500 MHz
Frequency accuracy : ±1 ppm or better
Sensitivity : 100 mV or better
Frequency range : 0.1–500 MHz
Measuring range : 0.01–10 V
Frequency range : 0.1–30 MHz
Output level : 0.1 µV–32 mV
(–127 to –17 dBm)
Frequency range : 0–500 MHz
Measuring range : 0 to ±5 kHz
Frequency range : At least 500 MHz
Measuring range : 0–100 %
Frequency range : 1 kHz ±10 %
Measuring range : 1–100 %
Frequency range : DC–100 MHz
Measuring range : 0.01–10 V
Imput impeadance : 10 M
Ω
/DC or beter
Measuring range : 10 mV–10 V
Input impedance : 50 k
Ω
/V DC or better
Measurement capability: 1 A/50 A
Frequency range : 300–3000 Hz
Measuring range : 1–500 mV
Frequency range : At least 1000 MHz
Spectraum bandwidth : 100 kHz or more
Power attenuation : 50 or 60 dB
Capacity : 150 W or more
Input impedance : 8
Ω
Capacity : 5 W or more
‘ ‘ CONNECTIONS
Attenuator
50 or 60 dB
Audio
generator
RF power meter
A 200 W/50
Ω
DC power supply
AA 13.8 V/30 A
Standard signal
aa generator
FM deviation
AA meter
Spectrum
analyzer
AC
millivoltmeter
Modulation
a analyzer
CAUTION:
DO NOT connect the
signal generator while
transmitting.
Speaker
to [EXT SP]
i706MKIIG
to [MIC]
to [DC 13.8 V]
to [ELEC KEY]
to [ANT 1/2]
Keyer
• Microphone connector
• (Rear panel view)
Frequency counter
AM meter
1 A, 30 A
Pin 5
MIC GND
Pin 6
MIC INPUT
–
+
Pin 4
PTT
1 8
Pin 7
GND