Adjustment Procedures; Preparation Before Servicing - Icom IC-M710RT Service Manual

SECTION 4 ADJUSTMENT PROCEDURES

4-1 PREPARATION BEFORE SERVICING

REQUIRED TEST EQUIPMENT
EQUIPMENT
Output voltage
DC power supply
Current capacity
Measuring range
RF power meter Frequency range
(terminated type) Impedance
SWR
Frequency range
Frequency counter Frequency accuracy
Sensitivity
Frequency range
RF voltmeter
Measuring range
DC voltmeter Input impedance
Frequency minimum
Spectram analyzer
Spectraum bandwidth : 100 kHz or more
' ' CONNECTIONS
AC
millivoltmeter
Speaker
to DC power receptacle
DC power supply
13.6 V/30 A
• [MICROPHONE] connector
Pin 7 MICE
Audio
generator
Pin 1 MIC
Connect pins
3
3 and 4 for AF
output
to [MICROPHONE]
GRADE AND RANGE
: 13.6 V DC
: 30 A or more
: 10–200 W
: 1.8–30 MHz
: 50 Ω
: Less than 1.2 : 1
: 0.1–100 MHz
: ±1 ppm or better
: 100 mV or better
: 0.1–100 MHz
: 0.01–10 V
: 50 kΩ/V DC or better
: At least 90 MHz
to [EXT SP]
[DC 13.6 V]
(front view)
[PTT]
6
4 5
EQUIPMENT
Audio generator
Standard signal
generator (SSG)
Oscilloscope
AC millivoltmeter
External speaker
Attenuator
DC ammeter
[ANT]
IC-M710RT
RC-21
4 - 1
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
: 4 Ω
Input impedance
Capacity : 6 W or more
Power attenuation : 50 or 60 dB
Capacity : 150 W or more
Measurement capability: 1 A/3 A /50 A
Attenuator Spectrum
50 or 60 dB analyzer
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]