Receiver Adjustments - Icom iC-M501EURO Service Manual

5-4 RECEIVER ADJUSTMENTS

ADJUSTMENT ADJUSTMENT CONDITION
SENSITIVITY 1 • Operating channel : ch16
• [SQUELCH] control:
• Set the internal speaker OFF in
the SET mode, and connect a
distortion meter with a 4 Ω load to
[EXT SP] receptacle.
• Connect an SSG to the antenna
connector and set as:
Frequency
Level
Modulation
Deviation
• Receiving
SQUELCH 1 • Operating channel : ch16
• [SQUELCH] control:
• Connect an SSG to the antenna
connector and set as:
Frequency
Level
Modulation
Deviation
• Receiving
*This output level of a standard signal generator (SSG) is indicated as SSG's open circuit.
Max. counterclockwise
: 156.800 MHz
: 10 µV*
(–97 dBm)
: 1 kHz
: ±3.5 kHz
Max. counterclockwise
: 156.800 MHz
: 0.18 µV*
(–122 dBm)
: 1 kHz
: ±3.5 kHz
MEASUREMENT
UNIT LOCATION
MAIN Connect a DC volt-
meter to check point
CP3.
MAIN Connect a DC volt-
meter to check point
CP5.
5 - 4
ADJUSTMENT
POINT
VALUE
UNIT
Maximum voltage MAIN
2 V MAIN
ADJUST
L1,
L2,
L3,
L4,
R33