Adjustment Procedures; Preparation Before Servicing - Icom IC-718 Service Manual

SECTION 5 ADJUSTMENT PROCEDURES

5-1 PREPARATION BEFORE SERVICING

REQUIRED TEST EQUIPMENT
EQUIPMENT
Output voltage
DC power supply
Current capacity
Measuring range
Frequency range
RF power meter
(terminated type) Impedance
SWR
Frequency range
Frequency accuracy
Frequency counter
Sensitivity
Frequency range
RF voltmeter
Measuring range
Frequency range
Modulation analyzer
Measuring range
Frequency range
Distortion meter
Measuring range
Frequency range
Oscilloscope
Measuring range
Imput impedance
Digital multimeter
' ' CONNECTIONS
Standard signal
generator
CAUTION !
DO NOT
transmit while
an SSG is connected to
the antenna connector.
DC power supply
Distortion meter
Speaker
GREDE AND RANGE
: 13.8 V DC
: 30 A or more
: 10–200 W
: 1.8–30 MHz
: 50 Ω
: Less than 1.2 : 1
: 0.1–100 MHz
: ±0.5 ppm or better
: 100 mV or better
: 0.1–100 MHz
: 0.01–10 V
: At least 30 MHz
: 0–100 %
: 1 kHz ±10 %
: 1–100 %
: DC–20 MHz
: 0.01–10 V
: 10 MΩ/DC or beter
to [DC 13.8 V]
Ammeter
to [EXT SP]
IC-718
EQUIPMENT
Frequency range
Spectram analyzer
Spectraum bandwidth : 100 kHz or more
Frequency range
Standard signal
Output level
generator (SSG)
AC millivoltmeter Measuring range
Input impedance
DC voltmeter
Measurement capability: 1 A and 30 A
DC ammeter
Frequency range
Audio generator
Measuring range
Power attenuation
Attenuator
Capacity
Input impedance
External speaker
Capacity
Resistance
Terminator
Capacity
Attenuator
• Microphone connector
5 - 1
GREDE AND RENGE
: At least 90 MHz
: 0.1–100 MHz
: 0.1 µV–32 mV
(–127 to –17 dBm)
: 10 mV–10 V
: 50 kΩ/V DC or better
: 300–3000 Hz
: 1–500 mV
: 50 or 60 dB
: 150 W or more
: 8 Ω
: 5 W or more
: 50 and 150 Ω
: 150 W or more
Modulation analyzer
Spectrum analyzer
RF power meter
(Front panel view)
Audio generator
, .
Pin 1 Pin 7
Pin 6
PTT
Pin 5