Icom IC-M710RT, Service Manual

Page: 13 / 73

4 - 1
SECTION 4 ADJUSTMENT PROCEDURES
4-1 PREPARATION BEFORE SERVICING
■
REQUIRED TEST EQUIPMENT
EQUIPMENT
DC power supply
RF power meter
(terminated type)
Frequency counter
RF voltmeter
DC voltmeter
Spectram analyzer
GRADE AND RANGE
Output voltage : 13.6 V DC
Current capacity : 30 A or more
Measuring range : 10–200 W
Frequency range : 1.8–30 MHz
Impedance : 50
Ω
SWR : Less than 1.2 : 1
Frequency range : 0.1–100 MHz
Frequency accuracy : ±1 ppm or better
Sensitivity : 100 mV or better
Frequency range : 0.1–100 MHz
Measuring range : 0.01–10 V
Input impedance : 50 k
Ω
/V DC or better
Frequency minimum : At least 90 MHz
Spectraum bandwidth : 100 kHz or more
EQUIPMENT
Audio generator
Standard signal
generator (SSG)
Oscilloscope
AC millivoltmeter
External speaker
Attenuator
DC ammeter
GRADE AND RANGE
Frequency range : 300–3000 Hz
Measuring range : 1–500 mV
Frequency range : 0.1–30 MHz
Output level : 0.1 µV–32 mV
(–127 to –17 dBm)
Frequency range : DC–100 MHz
Measuring range : 0.01–10 V
Measuring range : 10 mV–10 V
Input impedance : 4
Ω
Capacity : 6 W or more
Power attenuation : 50 or 60 dB
Capacity : 150 W or more
Measurement capability: 1 A/3 A /50 A
‘ ‘ CONNECTIONS
Spectrum
analyzer
Attenuator
50 or 60 dB
DC power supply
13.6 V/30 A
to DC power receptacle
to [MICROPHONE]
IC-M710RT
RC-21
[ANT]
to [EXT SP]
[DC 13.6 V]
Audio
generator
Pin 7 MICE
[PTT]
6
5 4
3
Pin 1 MIC
Speaker
• [MICROPHONE] connector
(front view)
AC
millivoltmeter
RF power meter
200 W/50
Ω
Standard signal
generator
CAUTION:
DO NOT connect the
signal generator while
transmitting.
DC power supply
13.6 V/3 A
to DC power receptacle
[DC 13.6 V]
Connect pins
3 and 4 for AF
output