Adjustment Procedures; Preparation Before Servicing - Icom IC-756PRO Service Manual

SECTION 4 ADJUSTMENT PROCEDURES
4-1 PREPARATION BEFORE SARVICING
I 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 counter Frequency accuracy
Sensitivity
Frequency range
RF voltmeter
Measuring range
Frequency range
FM deviation meter
Measuring range
Frequency range
Modulation analyzer
Measuring range
Frequency range
Distortion meter
Measuring range
Frequency range
Oscilloscope
Measuring range
' ' CONNECTIONS
Standard signal
generator
CAUTION !
DO NOT
transmit while
an SSG is connected to
the antenna connector.
DC power supply
Distortion meter
Speaker
Audio generator
, .
[MIC]
GREDE AND RANGE
: 13.8 V DC
: 30 A or more
: 10–200 W
: 1.8–100 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
: DC–500 MHz
: 0 to ±5 kHz
: At least 90 MHz
: 0–100 %
: 1 kHz ±10 %
: 1–100 %
: DC–20 MHz
: 0.01–20 V
to [DC 13.8 V]
Ammeter
to [EXT SP]
PTT
EQUIPMENT
Frequency range
Audio generator
Measuring range
Frequency range
Standard signal
Output level
generator (SSG)
Imput impeadance
Digital multimeter
AC millivoltmeter Measuring range
Input impedance
DC voltmeter
DC ammeter Measurement capability: 1 A/30 A
Frequency range
Spectram analyzer
Spectraum bandwidth : 100 kHz or more
Power attenuation
Attenuator
Capacity
Input impedance
External speaker
Capacity
Resistance
Terminator
Capacity
Attenuator
[ANT1] [ANT2]
4 - 1
GREDE AND RENGE
: 300–3000 Hz
: 1–500 mV
: 0.1–100 MHz
: 0.1 µV–32 mV
(–127 to –17 dBm)
: 10 MΩ/DC or beter
: 10 mV–10 V
: 50 kΩ/V DC or better
: At least 90 MHz
: 50 or 60 dB
: 150 W or more
: 8 Ω
: 5 W or more
: 50 and 150 Ω
: 150 W or more
FM deviation meter
Modulation analyzer
Spectrum analyzer
RF power meter